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Enbridge

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Employees 10,000+
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FY2017 Annual Report · Enbridge
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2017 Annual Report

Contents

Letter to Shareholders  1
How We Deliver Value  4
  2017 Financial Highlights  5

Sustainability at Enbridge  6
Corporate Governance  7
Investor Information  8

 
 
 
 
Life Takes Energy®

Our vision is to be the leading energy delivery company in North America. We play a 
critical role in enabling the economic well-being and quality of life of North Americans, 
who depend on access to affordable and plentiful energy—because Life Takes Energy.

Enbridge is a North American 
energy infrastructure leader 
with global scale and capability. 
Our three core businesses 
transport and distribute oil, 
natural gas and natural gas 
liquids and connect North 
America's growing supply 
basins with key demand centers. 

We strive to be an industry 
leader by: creating value for our 
shareholders; serving customers; 
setting best practice standards 
with respect to worker and 
public safety, environmental 
protection, community and 
Indigenous relations; and 
building an engaged workforce. 

Norman Wells
Norman Wells

Fort St. John
Fort St. John

Zama
Zama

Peace River
Peace River

Athabasca
Athabasca

Fort
Fort
McMurray
McMurray

Cheecham
Cheecham

Edmonton
Edmonton

Hardisty
Hardisty

Kerrobert
Kerrobert

C A N AD A

Vancouver
Vancouver

Lethbridge
Lethbridge

Regina
Regina

Cromer
Cromer

Rowatt
Rowatt

Gretna
Gretna

Liquids Pipelines
Enbridge operates the world’s longest and most complex crude oil and liquids 
transportation system, which moves approximately 65 percent of all U.S.-bound 
Canadian exports. Our Mainline System has an operating capacity of 2.85 million 
barrels per day and delivers western Canadian crude to eastern Canada, U.S. Midwest 
and Gulf Coast markets. 

Natural Gas Transmission and Midstream
Enbridge’s natural gas pipelines transport approximately 20 percent of all natural 
gas consumed in the U.S. We connect key supply basins to markets in the U.S. East, 
South and Midwest, and our transmission network extends throughout the Gulf Coast. 
In Western Canada, we directly link supply areas to markets in British Columbia, 
the Pacific Northwest and the U.S. Midwest.

Natural Gas Utilities
Enbridge’s natural gas utility business connects major growth centers with diverse gas 
supplies. Together, Enbridge Gas Distribution (EGD) and Union Gas deliver energy to 
approximately 3.7 million homes and businesses in Ontario, Quebec and New Brunswick.

North Sea

Hohe See
Hohe See

Hamburg

UNITED 
KINGDOM

London

THE 
NETHERLANDS

Rampion
Rampion

English Channel

Eoliennes Offshore
Eoliennes Offshore
du Calvados
du Calvados

Eoliennes Offshore
Eoliennes Offshore
des Hautes Falaises
des Hautes Falaises

BELGIUM

GERMANY

ParisParis

FRANCE

Halifax
Halifax

Fredericton
Fredericton

Parc du Banc
Parc du Banc
de Guerande
de Guerande

Enbridge has successfully built a strong Green 
Power and Transmission business, with interests 
in more than 2,500 megawatts (MW) of net 
renewable generating capacity. We also have 
an expanding offshore wind portfolio in Europe 
with significant capacity for growth.

Liquids Pipeline

LNG Facility

Natural Gas Transmission Pipeline

Rail 

Natural Gas Gathering Pipeline

Trucking Facility

Natural Gas Liquids Pipeline

Propane Terminal

Crude Storage or Terminal

Gas Storage Facility

NGL Storage Facility

Gas Processing Plant

Gas Distribution Service Territory

Affiliated Gas Distribution Territory

Power Transmission

Renewable Energy

Great Falls
Great Falls

Buffalo
Buffalo

Edgar
Edgar

Boise

Casper
Casper

Guernsey
Guernsey

Gurley
Gurley

U N I T E D   S T A T E S
U N I T E D   S T A T E S
O F   A M E R I C A
O F   A M E R I C A

Clearbrook
Clearbrook

Montreal
Montreal

MinotMinot

Superior
Superior

Boston
Boston

Toronto
Toronto
Westover
Westover
Buffalo
Buffalo

Chatham
Chatham

Leidy
Leidy

New York
New York

Oakford
Oakford

Philadelphia
Philadelphia

Steckman
Steckman
Ridge
Ridge

Sarnia
Sarnia

Stockbridge
Stockbridge

Channahon
Channahon
Flanagan
Flanagan

Chicago
Chicago

Toledo
Toledo

Accident
Accident

Saltville
Saltville

Salisbury
Salisbury

Patoka
Patoka

Wood 
Wood 
River
River

Nashville
Nashville

Cushing
Cushing

Moss Bluff
Moss Bluff

Bobcat
Bobcat

New 
New 
Orleans
Orleans

EganEgan
Port Arthur
Port Arthur

Houston
Houston

Orlando
Orlando

Tampa
Tampa

M E X I C O

Letter to Shareholders

The New Enbridge
Essential to our success is an ability to 
continually assess our environment and 
adapt to change; and over the last three 
decades, Enbridge has done just that. 
In the 1990’s, we purchased Enbridge Gas 
Distribution as we believed in the potential 
of natural gas; 20 years ago we were the 
first to offer incentive tolling to better align 
with our customers’ needs; and 15 years 
ago we began investing in renewables, 
ahead of the curve. In 2017, we changed 
again: the completion of our merger with 
Spectra Energy transformed Enbridge 
into a North American infrastructure leader 
with global scale. 

With the completion of the merger, we now 
have what we believe are the highest-quality 
liquids and natural gas infrastructure assets 
on the continent under one roof. The new 
Enbridge has a much stronger and more 
balanced portfolio of oil and natural gas 
assets, growth opportunities and geographic 
reach. Our expanded footprint provides 
unmatched scale, diversity, financial 
flexibility and multiple platforms for organic 
growth to continue to deliver the energy 
people need and want—today and for 
decades to come. 

This has been done as we maintain and 
build on the value proposition that has 
served our company and our shareholders 
well: our reliable, low-risk business model, 
transparent growth and a growing dividend. 

Two years ago, we began a process to 
transform our business by finding more 
efficient and effective ways of working. 
After the merger, we moved quickly to 
integrate the Spectra assets and bring 

The new Enbridge has a much 
stronger and more balanced 
portfolio of oil and natural gas 
assets, growth opportunities 
and geographic reach.

together 15,000 people into the new 
Enbridge. We ended 2017 as one team, 
working towards a common goal of 
building the best energy delivery company 
in North America.

2017 Review
Beyond the transaction, 2017 was a very 
busy year punctuated with numerous 
accomplishments and milestones. 
Impressively, we put $12 billion of new 
assets into service in 2017, a record 
achievement in a single year, but equally 
important these projects are expected to 
provide strong cash flows and earnings for 
decades to come. This included Sabal Trail, 
a greenfield natural gas system serving the 
U.S. Southeast; the Wood Buffalo Extension, 
serving the Fort Hills oil sands project in 
northern Alberta; and the Chapman Ranch 
wind power facility in Texas. Our ability 
to advance these and other projects is 
the result of continued on-the-ground 
engagement with local communities, 
stakeholders and regulators to build 
understanding and trust, which is critical to 
what we do and part of our corporate DNA.

2017 Annual Report  1

Al Monaco
President &  
Chief Executive Officer

Gregory L. Ebel 
Chair, 

Board of Directors

Forward-Looking Information

This Annual Report includes references 

to forward-looking information. By its nature 

this information involves certain assumptions 

and expectations about future outcomes, 

so we remind you it is subject to risks 

and uncertainties that affect our business. 

The more significant factors and risks that 

might affect our future outcomes are listed 

and discussed in the “Forward-Looking 

Information” and risk sections of our Form 10-K 

and Management’s Discussion & Analysis, 

available on both sedar.com and sec.gov.

Another area of focus was to secure 
funding for our capital program and to 
ensure a strong balance sheet. We raised 
about $14 billion of capital across the 
Enbridge group of companies on favorable 
terms and sold $2.6 billion of non-core 
assets, surpassing our original target of 
$2 billion set at the time we announced 
the Spectra transaction. We also took 
steps to simplify our sponsored vehicles, 
which hold critical infrastructure assets.

Integration of the Spectra business is well 
on track and we achieved the cost synergy 
objectives we were anticipating for the 
first year. With the combined strength and 
earnings power of our core businesses, 
contributions from new projects and cost 
synergy capture, distributable cash flow per 
share was $3.68, which was within the 2017 
financial guidance range communicated to 
investors. Finally, we increased our dividend 
by 15 percent in 2017, our 23rd consecutive 
year of dividend hikes. 

Despite our teams’ best efforts, there were 
some disappointments: upstream volume 
disruptions prevented the full utilization of 
our liquids Mainline; we experienced project 
delays due to regulatory and permitting 
challenges prevalent in our industry today; 
and three years of low commodity prices 
took their toll on our commodity-sensitive 
businesses. Equally disappointing was 
the fact that we did not realize the type of 
shareholder returns that you, our owners, 
have become accustomed to, and that we 
expect to deliver on your behalf. We strongly 
believe that as our team continues to deliver 
on the benefits of the Spectra merger, 
our capital expansion projects and financial 
targets, our shareholders will enjoy strong 
total shareholder returns.

We have clear competitive 
advantages in our three 
core businesses, and they 
fit in our low-risk, reliable 
value proposition.

In our core businesses, we moved record 

volumes on our Mainline System, which 

came from a combination of oil sands 

supply growth and capacity optimization 

initiatives undertaken by our team to 

increase throughput, which benefited 

our customers and our industry, too. 

Our expanded gas transmission business 

operated very well and delivered the results 

we expected from the Spectra transaction. 

Same goes for our gas distribution 

businesses, where we added approximately 

50,000 customers and brought a major 

expansion into service, another benefit 

of the Spectra deal. Importantly, we once 

again delivered industry-leading safety 

performance. Our 15,000 employees 

performed their daily work with the utmost 

focus on safety, not only for the communities 

in which we operate, but also for their fellow 

teammates. Shareholders could not be 

better served by our employees’ long-term 

dedication to safely and reliably operating 

our assets. Like us, the communities where 

we live and work expect us to be world-class 

operators, and each year we work harder 

at running our business while protecting 

the public, the environment and our people. 

2  Enbridge Inc.

In August 2017, we broke ground in Canada on 
our Line 3 Replacement Program—the largest project 
in Enbridge's history—which will enhance the safety, 
operational reliability and throughput of the Mainline System.

Strategic Focus 
At Enbridge, we continually look for ways 
to improve our business and leverage our 
strengths, which is critical to remaining 
competitive in today’s environment. After we 
closed the Spectra merger, we undertook 
a comprehensive review of our expanded 
asset base, business environment and 
competitive position, with the goal 
of assessing where best to allocate capital 
and to establish our new three-year plan. 

As a result of this review, we are very 
focused on what we do best: growing 
our pipeline and utility assets because 
this is where we can add the most value. 
Moving forward, we will place greater 
emphasis on our three core businesses: 
liquids pipelines and terminals; natural 
gas transmission and storage; and natural 
gas utilities. These three core businesses 
share common characteristics:

•  strategically located assets with direct 
connections between North America’s 
key supply areas, storage and 
demand markets;

Execute our capital program
We will focus on bringing $22 billion of 
secured growth projects into operation 
through 2020. Our inventory of projects 
includes: the Line 3 Replacement Program 
that will enhance the safety, operational 
reliability and throughput of the Mainline 
System; the NEXUS Gas Transmission 
Project, a natural gas pipeline system 
connecting our Texas Eastern pipeline 
in Ohio to the Union Gas Dawn hub in 
Ontario; and the Valley Crossing natural 
gas pipeline, which will provide gas 
producers with market access to Mexico. 

Strengthen our financial position
To fund growth opportunities, we’ve 
designed a prudent financing plan that 
provides flexibility of sources of capital and 
enables us to accelerate deleveraging of 
the balance sheet. As part of this, we plan 
to sell $3 billion of non-core assets in 2018.

Complete integration 
and transformation
We remain on track to capture the 
estimated $540 million in pre-tax annual 
synergies from the Spectra transaction by 
2019. We have also implemented initiatives 
to target top-quartile cost performance.

Position for long-term growth
We will continue to evaluate opportunities 
to position Enbridge for the energy 
mix of the future, including expanding our 
offshore wind power generation business.

Final Thoughts
Thanks to the continued hard work and 
dedication of our employees, we were 
able to accomplish a great deal this past 
year. We are particularly proud of how 
our people came together to respond to 
hurricanes Harvey and Irma. We maintained 
our operations and lent a much-needed 
hand in our hard-hit communities. 

We would like to thank our Board of 
Directors for their leadership through our 
first year as the new Enbridge. In particular, 
Rebecca Roberts, who is retiring from the 
Board, deserves our heartfelt appreciation 
for her service as a Director of Enbridge 
and Enbridge Energy Partners. We are 
honored and feel fortunate each day 
to work with the Enbridge team and to 
lead this great company.

We strongly believe that Enbridge is very 
well positioned for the future. We have 
talented people operating and growing 
the most strategically located and critical 
liquids and natural gas infrastructure and 
distribution systems on the continent. 
Our goal over the next three years is  
to build on our strengths to become 
the best-performing energy infrastructure 
company in North America, and to 
continue delivering long-term growth 
and shareholder value. 

Al Monaco
President &  
Chief Executive Officer

March 12, 2018

Gregory L. Ebel 
Chair,  

Board of Directors

•  size, scale and flexibility to meet customer 
needs and compete to win new business;

•  strong commercial underpinnings and 
highly predictable cash flows that align 
with our low-risk value proposition; and

•  a large set of organic growth opportunities 
that naturally extend the scope and reach 
of our existing businesses.

We also decided to sell or monetize assets 
that don’t have these characteristics or 
don’t fit our business model. These non-core 
assets, including certain unregulated 
gas midstream and onshore renewable 
businesses, have a value of at least 
$10 billion.

2018 – 2020 Plan 
and Priorities
We have set a course for the next three 
years that will increase our competitiveness 
and grow our business. We’re confident 
the successful execution of this plan 
will generate approximately 10 percent 
compound annual distributable cash flow 
per share growth through 2020, which 
supports our ability to grow our dividend by 
10 percent per year over the same period. 

Our plan focuses on the following 
six priorities:

Safety and operational reliability
Above all else, safety and reliability of our 
operations remains our number one priority.

Maximise the value of our core business
 We will focus on growing our three 
core businesses—liquids pipelines, gas 
transmission and gas utilities—through 
optimization, extension and expansion. 
We have clear competitive advantages 
in these businesses, and they fit in our 
low-risk, reliable value proposition.

2017 Annual Report  3

  
How We  
Deliver Value

Enbridge’s value proposition brings together a combination 
of our reliable, low-risk business model, transparent growth, 
and stable and growing dividend income. 

Reliable and Low Risk
Our three core businesses generate 
highly reliable cash flows. Over 96 percent 
of Enbridge’s earnings are underpinned 
by low-risk, long-term contracts with 
strong, creditworthy customers. 
These long-term contracts provide 
stable and reliable cash flow and earnings. 

Growing Dividend
Enbridge has a consistent track record 
of delivering annual dividend increases 
for our shareholders, supported by 
the successful execution of our secured 
capital program. Our strategic footprint 
will continue to allow us to invest in 
new, value-add projects to support 
continued dividend growth. 

Transparent Growth
The strategic positioning of our assets 
offers organic growth opportunities by 
extending and expanding our existing 
network. A key element of Enbridge’s 
long-term success is the safe execution 
of our secured growth capital program, 
which provides a clear line of sight 
to cash flow growth. We are currently 
executing on a program to deliver 
$22 billion of new projects over 
the next three years. The additional 
cash flow from these projects will 
support our expected dividend growth. 

Growth Capital Program 
by Business Segment

$12 Billion 
in-service 
in 2017

$22 Billion 
to be placed 
into service 
2018 – 2020

20-Year Dividend Growth
Canadian dollars per share

We expect to grow our 
dividend by 10% per 
year through 2020.

4%
14%
34%

48%

4%
14%
34%

48%

8%

12%

34%

46%

8%

$2.50

12%

$2.00

34%

$1.50

$1.00

$0.50

46%

$0.00

20-year CAGR1  = 11.2%

n  Liquids pipelines
n  Gas transmission & midstream 
n  Gas distribution
n  Renewables & other

1997

2017

1  Compound Annual Growth Rate of an 

investment over a specified time period.

Contractual Support

96% 
TOP/COS/ 
CTS/Fixed Fee

4%

■ Take or pay / Cost of service
2018e EBITDA
■ Competitive Tolling 
  Settlement (CTS)

n  Take-or-Pay (TOP)/Cost-of-Service (COS)
■ Fixed Fee
n  Competitive Tolling Settlement (CTS)
n  Fixed fee
■ Commodity Sensitive
n  Commodity sensitive

4  Enbridge Inc.

 
 
 
 
 
 
 
 
2017 Financial 
Highlights

Our 2017 financials reflect our first year as a combined company following the closure 
of the Enbridge and Spectra Energy merger on February 27, 2017. 

Year ended Dec. 31 

millions of Canadian dollars, except per share amounts

Total assets

Earnings attributable to common shareholders

Earnings/share

Adjusted EBITDA1

Adjusted earnings1

Adjusted earnings per common share

Distributable cash flow1,2

DCF per common share

Weighted average common shares outstanding

Dividends paid/share

2017

2016

162,093

85,209

2,529

1.66

10,317

2,982

1.96

5,614

3.68

1,525

2.41

1,776

1.95

6,902

2,078

2.28

3,713

4.08

911

2.12

1  Includes adjustments for unusual, non-recurring or non-operating factors. Schedules reconciling adjusted EBITDA, adjusted earnings, adjusted earnings per common share 

and distributable cash flow (DCF) are available at enbridge.com 

2  Formerly referred to as Available Cash Flow From Operations (ACFFO). Calculation methodology remains unchanged.

Over the past 20 years, Enbridge has delivered 12 percent dividend per share compound 
annual growth and generated total annual shareholder returns of approximately 13 percent, 
compared to seven percent for the S&P/TSX Composite Index. We’ve accomplished this while 
building North America's largest energy infrastructure company.

In addition to Enbridge, 
our Sponsored Vehicles include 
three publicly traded entities 
that offer investors a variety 
of attractive ways to invest in 
low-risk energy infrastructure.

Enbridge Income Fund Holdings Inc. (TSX: ENF):  a publicly traded 
Canadian corporation that invests in low-risk energy infrastructure assets, 
including the Canadian portion of Enbridge’s liquids Mainline System. 
ENF pays a monthly dividend. 

Spectra Energy Partners, LP (NYSE: SEP):  a U.S. master limited partnership 
(MLP) focused on natural gas pipelines and storage in the U.S. 

Enbridge Energy Partners, L.P. (NYSE: EEP):  a pure-play, liquids pipelines 
MLP, which owns the U.S. portion of Enbridge's liquids Mainline System.

2017 Annual Report  5

Sustainability 
at Enbridge 

Our first Sustainability Report for our combined 
company will be published in June 2018 
and will be available at enbridge.com/sustainability 

As a company that builds and 
operates energy infrastructure 
designed to safely and reliably 
deliver the energy people 
need and want over decades, 
how we sustain our business 
over the long term is a 
question we ask ourselves 
in every decision we make.
Our approach to sustainability takes 
into consideration the interests of all 
our stakeholders—from those who invest 
in us, work for us and partner with us, 
to those who live near our projects and 
operations. We’re focused on identifying 
the environmental, social and governance 
risks and opportunities most significant 
to our business and integrating them 
into our strategic framework and capital 
allocation decisions. 

Oversight of our sustainability policies 
and performance begins with our Board 
of Directors and executive management. 
Enbridge has dedicated policies, 
management systems, teams and  
senior-level accountabilities in place 
to address key issues facing our 
company and its stakeholders.

Safety and 
Environmental Protection
We make ongoing investments to assure 
the fitness of our systems and to detect 
leaks. We are building a culture where 
all incidents are seen as preventable and 
our people are empowered and expected 
to raise safety or environmental concerns. 
This past year, we had no major incidents 
on our systems.

$2B

We invested close to $2 billion 
in the safety and integrity of our 
energy delivery systems in 2017.

Stakeholder and 
Indigenous Inclusion
We engage with stakeholders and 
Indigenous groups in a respectful 
manner with a focus on building 
mutually beneficial relationships. 
Our Indigenous Peoples Policy 
recognizes the legal and constitutional 
rights of Indigenous peoples, and 
the importance of their relationship 
to their traditional lands and resources.

Climate and 
Energy Solutions
We are uniquely positioned to help 
bring new low-carbon solutions to 
scale in Canada and the U.S. We are 
focused on energy efficiency and 
emissions reduction across our own 
operations, and we are integrating 
carbon sensitivities and climate 
risks in our investment decisions.

$74M

Through our engagement on the Line 3 
Replacement Program, we have entered 
into agreements with 56 Indigenous 
communities in Canada. In 2017, 
we delivered approximately $74 million 
in social-economic opportunities to 
Indigenous contractors or partners.

$2.9B 
1,009 MW

We have committed to invest  
$2.9 billion in European offshore 
wind projects that will add 1,009 MW 
of renewable power generation 
capacity to our portfolio.

6  Enbridge Inc.

Sound Governance 
Means Sound Business

We believe good governance is important 
for our shareholders, our employees and our 
company. We have a comprehensive system 
of stewardship and accountability that meets 
the requirements of all applicable rules, 
regulations, standards and internal and 
external policies. We continuously assess 
our governance practices to build on our 
strengths and improve our effectiveness. 

We benefit from a diverse and highly 
engaged Board of Directors who bring a 
range of viewpoints, deep expertise and 
strong energy-sector knowledge that helps 
ensure effective oversight of our strategic 
priorities and operations.

For more information about our Board of 
Directors and our governance practices, 
please see Enbridge Inc.’s Notice of 2018 
Annual Meeting and Proxy Statement 
available in the Reports & Filings section 
of the Investment Center at enbridge.com

Board of Directors

As of March 12, 2018 (pictured, left to right )

J. Herb England

Catherine L. Williams

Gregory L. Ebel, Chair

Marcel R. Coutu

V. Maureen Kempston Darkes

Al Monaco

Rebecca B. Roberts

Dan C. Tutcher

Michael McShane

Michael E.J. Phelps

Pamela L. Carter

Charles W. Fischer

Clarence P. Cazalot, Jr.

2017 Annual Report  7

Investor Information

Investor Inquiries

2018 Enbridge Inc. Common Share Dividends

If you have inquiries regarding the following:

• additional financial or statistical information;
• industry and company developments;
• the latest news releases or investor 

presentations; or

• any other investment-related inquiries
please contact Enbridge  
Investor Relations:

Toll-free: 800-481-2804 
Office: 403-231-3960 
investor.relations@enbridge.com

Enbridge Inc. 
200, 425 – 1st Street S.W. 
Calgary, Alberta, Canada T2P 3L8

Annual Meeting

The Annual Meeting of Shareholders will be 
held at the Calgary Marriott Downtown Hotel, 
Kensington Room, 110 – 9 Avenue S.E., Calgary, 
Alberta, Canada at 1:30 pm MT on Wednesday, 
May 9, 2018. A live audio webcast of the meeting 
will be available at enbridge.com and will be 
archived on the site for approximately one 
year. Webcast details will be available on the 
Company's website closer to the meeting date.

Registrar and Transfer Agent 

For information relating to shareholdings, 
shareholder investment plan, dividends, direct 
dividend deposit, dividend re-investment 
accounts and lost certificates, please contact:

AST Trust Company 
P.O. Box 700, Station B 
Montreal, Quebec, Canada H3B 3K3 
Telephone: 800-821-2794, or  
416-682-3860 outside of North America 
astfinancial.com

AST Trust Company has offices in 
Halifax, Toronto, Calgary and Vancouver.

Dividend

Payment date

Record date1

SPP deadline2

Q1

$0.671

Q2

$ – 4

Q3

$ – 4

Q4

$ – 4

Mar 01

Jun 01

Sep 01

Dec 01

Feb 15

May 15

Aug 15

Nov 15

Feb 22

May 25

Aug 27

Nov 26

DRIP enrollment3

Feb 08

May 08

Aug 08

Nov 08

1  Dividend record dates for Common Shares are generally February 15, May 15, August 15 and November 15 

in each year unless the 15th falls on a Saturday or Sunday.

2  The Share Purchase Plan cut-off date is five business days prior to the dividend payment date.

3  The Dividend Reinvestment Program enrollment cut-off date is five business days prior to the dividend 

record date.

4  Amount will be announced as declared by the Board of Directors.

Common and Preference Shares

The Common Shares of Enbridge Inc. trade in Canada on the Toronto Stock Exchange 
and in the United States on the New York Stock Exchange under the trading symbol 
“ENB.” The Preference Shares of Enbridge Inc. trade in Canada on the Toronto Stock 
Exchange under the trading symbols:

Series A – ENB.PR.A  
Series B – ENB.PR.B  
Series C – ENB.PR.C 
Series D – ENB.PR.D  
Series F – ENB.PR.F  
Series H – ENB.PR.H  
Series J – ENB.PR.U  
Series L – ENB.PF.U  
Series N – ENB.PR.N 
Series P – ENB.PR.P 
Series R – ENB.PR.T

Series 1 – ENB.PR.V 
Series 3 – ENB.PR.Y 
Series 5 – ENB.PF.V 
Series 7 – ENB.PR.J 
Series 9 – ENB.PF.A 
Series 11 – ENB.PF.C 
Series 13 – ENB.PF.E 
Series 15 – ENB.PF.G 
Series 17 – ENB.PF.I 
Series 19 – ENB.PF.K 

DRIP Information and How to Register

Enbridge offers a dividend reinvestment and share purchase plan (DRIP) to 
enable holders of Enbridge common shares to acquire additional shares through 
re-investment of the common share dividends paid quarterly, or through optional 
cash payments. Dividends re-invested through Enbridge’s DRIP receive a two-percent 
discount on the market price of Enbridge shares, and funds are fully invested as 
fractional share ownership is permitted as part of the plan. DRIP participants are 
also eligible to purchase up to an additional $5,000 in Enbridge common shares each 
quarter without incurring brokerage fees; however, the two-percent discount is not 
available for these additional purchases. Please contact AST toll-free (North America) 
at 1-800-821-2794 or outside of North America at 1-416-682-3860 to request 
enrollment forms and for further information on Enbridge’s DRIP.

Auditors

PricewaterhouseCoopers LLP

8  Enbridge Inc.

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_______________________________

FORM 10-K

_______________________________

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2017 
or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the transition period from         to        

Commission file number 1-10934
_______________________________

ENBRIDGE INC.
(Exact Name of Registrant as Specified in Its Charter)
_______________________________

Canada
(State or Other Jurisdiction of
Incorporation or Organization)

None
(I.R.S. Employer
Identification No.)

200, 425 - 1st Street S.W.
Calgary, Alberta, Canada T2P 3L8
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code (403) 231-3900
_______________________________
Securities registered pursuant to Section 12(b) of the Act:

Title of each class
Common Shares

Name of each exchange on which registered
New York Stock Exchange

_______________________________

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.Yes 

 No 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.Yes 

 No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange 
Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been 
subject to such filing requirements for the past 90 days.Yes 

 No 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data 
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or 
for such shorter period that the registrant was required to submit and post such files).Yes 

 No 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405) is not contained herein, and will 
not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this 
Form 10-K or any amendment to this Form 10-K. 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting 
company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company” and "emerging growth company" in Rule 
12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer 

Non-Accelerated Filer 

 (Do not check if a smaller reporting company)

Emerging growth company 

Accelerated Filer 

Smaller reporting company 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying 

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes 

 No 

The aggregate market value of the registrant’s common shares held by non-affiliates computed by reference to the price at which the common 

equity was last sold on June 30, 2017, was approximately US$65,416,118,124.

As at February 9, 2018, the registrant had 1,695,190,292 common shares outstanding.

DOCUMENTS INCORPORATED BY REFERENCE: 
Portions of the proxy statement for the 2018 Annual Meeting of Shareholders are incorporated by reference in Part III.

1

 
 
 
 
 
 
Page

GLOSSARY

Item 1.

PART I
Business

Item 1A. Risk Factors

Item 1B. Unresolved Staff Comments

Item 2.

Item 3.

Properties

Legal Proceedings

Item 4. Mine Safety Disclosures

PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer

Purchases of Equity Securities

Item 6.
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of

Selected Financial Data

Operations

Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 8.
Financial Statements and Supplementary Data

Item 9.

Changes in and Disagreements with Accountants on Accounting and Financial
Disclosure

Item 9A. Controls and Procedures
Item 9B. Other Information

PART III

Item 10. Directors, Executive Officers and Corporate Governance
Item 11. Executive Compensation
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related

Stockholder Matters

Item 13. Certain Relationships and Related Transactions, and Director Independence
Item 14. Principal Accountant Fees and Services

PART IV

Item 15. Exhibits and Financial Statement Schedules
Item 16. Form 10-K Summary

Exhibit Index

Signatures

7

40

48

48

48

48

49

51

52

101

105

195

195

196

196

196

196

196

196

197

198

198
203

Accumulated other comprehensive income/(loss)

Asset retirement obligations

Accounting Standards Update

British Columbia

  Billion cubic feet per day

  Barrels per day

Canadian L3R Program

  Canadian portion of the Line 3 Replacement Program

Canadian Restructuring Plan

Transfer of Enbridge's Canadian Liquids Pipelines business, held by

EPI and Enbridge Pipelines (Athabasca) Inc., and certain Canadian

renewable energy assets to the Fund Group, which was effective on

AOCI

ARO

ASU

BC

bcf/d

bpd

ECT

EEP

EGD

EIPLP

EIS

ENF

EPI

EUB

FERC

GHG

HLBV

IDR

IJT

IR Plan

ISO

LIBOR

LMCI

LNG

MD&A

MEP

CTS

Dawn

DCP Midstream

Duke Energy

EaR

EBITDA

Flanagan South

L3R Program

Lakehead System

Enbridge

  Enbridge Inc.

  Earnings before interest, income taxes and depreciation and

September 1, 2015

  Competitive Toll Settlement

Dawn Hub

DCP Midstream, LLC

Duke Energy Corporation

Earnings-at-Risk

amortization

  Enbridge Commercial Trust

  Enbridge Energy Partners, L.P.

  Enbridge Gas Distribution Inc.

  Enbridge Income Partners LP

Environmental Impact Statement

  Enbridge Income Fund Holdings Inc.

  Enbridge Pipelines Inc.

New Brunswick Energy and Utilities Board

  Federal Energy Regulatory Commission

  Flanagan South Pipeline

  Greenhouse gas

Hypothetical Liquidation at Book Value

  Incentive Distribution Rights

  International Joint Tariff

EGD's Incentive Rate Plan

Incentive Stock Options

  Line 3 Replacement Program

  Lakehead Pipeline System

London Interbank Offered Rate

Land Matters Consultation Initiative

  Liquefied natural gas

  Management’s Discussion and Analysis

  Midcoast Energy Partners, L.P.

2

3

Merger Transaction

Combination of Enbridge and Spectra Energy through a stock-for-

stock merger transaction which closed on February 27, 2017

MNPUC

  Minnesota Public Utilities Commission

  
PART I

Item 1.

Business

Item 1A. Risk Factors

Item 1B. Unresolved Staff Comments

Item 2.

Item 3.

Properties

Legal Proceedings

Item 4. Mine Safety Disclosures

PART II

Purchases of Equity Securities

Item 6.

Selected Financial Data

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of

Operations

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Financial Statements and Supplementary Data

Changes in and Disagreements with Accountants on Accounting and Financial

Item 8.

Item 9.

Item 9A. Controls and Procedures

Item 9B. Other Information

Disclosure

PART III

Item 10. Directors, Executive Officers and Corporate Governance

Item 11. Executive Compensation

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related

Stockholder Matters

Item 13. Certain Relationships and Related Transactions, and Director Independence

Item 14. Principal Accountant Fees and Services

Item 15. Exhibits and Financial Statement Schedules

Item 16. Form 10-K Summary

PART IV

Exhibit Index

Signatures

7

40

48

48

48

48

49

51

52

101

105

195

195

196

196

196

196

196

196

197

198

198

203

Page

GLOSSARY

AOCI
ARO
ASU
BC
bcf/d
bpd
Canadian L3R Program
Canadian Restructuring Plan

CTS
Dawn
DCP Midstream
Duke Energy
EaR
EBITDA

ECT
EEP
EGD
EIPLP
EIS
Enbridge
ENF
EPI
EUB
FERC
Flanagan South
GHG
HLBV
IDR
IJT
IR Plan
ISO
L3R Program
Lakehead System
LIBOR
LMCI
LNG
MD&A
MEP
Merger Transaction

MNPUC

Accumulated other comprehensive income/(loss)
Asset retirement obligations
Accounting Standards Update
British Columbia
  Billion cubic feet per day
  Barrels per day
  Canadian portion of the Line 3 Replacement Program
Transfer of Enbridge's Canadian Liquids Pipelines business, held by
EPI and Enbridge Pipelines (Athabasca) Inc., and certain Canadian
renewable energy assets to the Fund Group, which was effective on
September 1, 2015
  Competitive Toll Settlement
Dawn Hub
DCP Midstream, LLC
Duke Energy Corporation
Earnings-at-Risk
  Earnings before interest, income taxes and depreciation and
amortization
  Enbridge Commercial Trust
  Enbridge Energy Partners, L.P.
  Enbridge Gas Distribution Inc.
  Enbridge Income Partners LP
Environmental Impact Statement
  Enbridge Inc.
  Enbridge Income Fund Holdings Inc.
  Enbridge Pipelines Inc.
New Brunswick Energy and Utilities Board
  Federal Energy Regulatory Commission
  Flanagan South Pipeline
  Greenhouse gas
Hypothetical Liquidation at Book Value
  Incentive Distribution Rights
  International Joint Tariff
EGD's Incentive Rate Plan
Incentive Stock Options
  Line 3 Replacement Program
  Lakehead Pipeline System
London Interbank Offered Rate
Land Matters Consultation Initiative
  Liquefied natural gas
  Management’s Discussion and Analysis
  Midcoast Energy Partners, L.P.
Combination of Enbridge and Spectra Energy through a stock-for-
stock merger transaction which closed on February 27, 2017
  Minnesota Public Utilities Commission

2

3

  
MW
NEB
NGL
Noverco
NYSE
OCI
OEB
OPEB
OPEC
PennEast
ROE
RSU
Sabal Trail
Sandpiper
Seaway Pipeline
Secondary Offering

SEP
Spectra Energy
TCJA
Texas Eastern
the Court
the Fund
the Fund Group
TSX
the Tupper Plants
Union Gas
U.S. GAAP

U.S. L3R Program
Vector
VIE
WCSB

CONVENTIONS

  Megawatts
  National Energy Board
  Natural gas liquids
  Noverco Inc.
New York Stock Exchange
Other comprehensive income/(loss)
  Ontario Energy Board
Other postretirement benefit obligations
Organization of Petroleum Exporting Countries
PennEast Pipeline Company LLC
  Return on equity
Restricted Stock Units
Sabal Trail Transmission, LLC
Sandpiper Project
  Seaway Crude Pipeline System
ENF's secondary offering of 17,347,750 ENF common shares to the 
public on April 18, 2017

Spectra Energy Partners, LP
  Spectra Energy Corp
the “Tax Cuts and Jobs Act”
Texas Eastern Transmission, L.P.
United States District Court for the District of Columbia
  Enbridge Income Fund
  The Fund, ECT, EIPLP and the subsidiaries and investees of EIPLP
Toronto Stock Exchange
  Tupper Main and Tupper West gas plants
Union Gas Limited
  Generally accepted accounting principles in the United States of
America
  United States portion of the Line 3 Replacement Program
  Vector Pipeline L.P.
Variable interest entities
  Western Canadian Sedimentary Basin

The terms "we", "our", "us" and "Enbridge" as used in this report refer collectively to Enbridge Inc. unless 
the context suggests otherwise. These terms are used for convenience only and are not intended as a 
precise description of any separate legal entity within Enbridge.

Unless otherwise specified, all dollar amounts are expressed in Canadian dollars, all references to 
“dollars”, “$” or “C$” are to Canadian dollars and all references to “US$” are to United States dollars. All 
amounts are provided on a before tax basis, unless otherwise stated.

FORWARD-LOOKING INFORMATION

Forward-looking information, or forward-looking statements, have been included in this annual report on Form 10-K to 

provide information about us and our subsidiaries and affiliates, including management’s assessment of Enbridge 

and its subsidiaries’ future plans and operations. This information may not be appropriate for other purposes. 

Forward-looking statements are typically identified by words such as ‘‘anticipate”, “expect”, “project”, “estimate”, 

“forecast”, “plan”, “intend”, “target”, “believe”, “likely” and similar words suggesting future outcomes or statements 

regarding an outlook. Forward-looking information or statements included or incorporated by reference in this 

document include, but are not limited to, statements with respect to the following: expected earnings before interest, 

income taxes and depreciation and amortization (EBITDA); expected earnings/(loss); expected earnings/(loss) per 

share; expected future cash flows; expected performance of the Liquids Pipelines, Gas Transmission and Midstream, 

Gas Distribution, Green Power and Transmission, and Energy Services businesses; financial strength and flexibility; 

expectations on sources of liquidity and sufficiency of financial resources; expected costs related to announced 

projects and projects under construction; expected in-service dates for announced projects and projects under 

construction; expected capital expenditures; expected equity funding requirements for our commercially secured 

growth program; expected future growth and expansion opportunities; expectations about our joint venture partners’ 

ability to complete and finance projects under construction; expected closing of acquisitions and dispositions; 

estimated future dividends; recovery of the costs of the Canadian portion of the Line 3 Replacement Program 

(Canadian L3R Program); expected expansion of the T-South System and Spruce Ridge Program; expected capacity 

of the Hohe See Expansion Offshore Wind Project; expected costs in connection with Line 6A and Line 6B crude oil 

releases; expected effect of Aux Sable Consent Decree; expected future actions of regulators; expected costs related 

to leak remediation and potential insurance recoveries; expectations regarding commodity prices; supply forecasts; 

expectations regarding the impact of the Merger Transaction including our combined scale, financial flexibility, growth 

program, future business prospects and performance; impact of the Canadian L3R Program on existing integrity 

programs; the sponsored vehicle strategy; dividend payout policy; dividend growth and dividend payout expectation; 

expectations on impact of hedging program; and expectations resulting from the successful execution of our 

2018-2020 Strategic Plan.

Although we believe these forward-looking statements are reasonable based on the information available on the date 

such statements are made and processes used to prepare the information, such statements are not guarantees of 

future performance and readers are cautioned against placing undue reliance on forward-looking statements. By their 

nature, these statements involve a variety of assumptions, known and unknown risks and uncertainties and other 

factors, which may cause actual results, levels of activity and achievements to differ materially from those expressed 

or implied by such statements. Material assumptions include assumptions about the following: the expected supply of 

and demand for crude oil, natural gas, natural gas liquids (NGL) and renewable energy; prices of crude oil, natural 

gas, NGL and renewable energy; exchange rates; inflation; interest rates; availability and price of labor and 

construction materials; operational reliability; customer and regulatory approvals; maintenance of support and 

regulatory approvals for our projects; anticipated in-service dates; weather; the realization of anticipated benefits and 

synergies of the Merger Transaction; governmental legislation; acquisitions and the timing thereof; the success of 

integration plans; impact of the dividend policy on our future cash flows; credit ratings; capital project funding; 

expected EBITDA; expected earnings/(loss); expected earnings/(loss) per share; expected future cash flows and 

estimated future dividends. Assumptions regarding the expected supply of and demand for crude oil, natural gas, 

NGL and renewable energy, and the prices of these commodities, are material to and underlie all forward-looking 

statements, as they may impact current and future levels of demand for our services. Similarly, exchange rates, 

inflation and interest rates impact the economies and business environments in which we operate and may impact 

levels of demand for our services and cost of inputs, and are therefore inherent in all forward-looking statements. Due 

to the interdependencies and correlation of these macroeconomic factors, the impact of any one assumption on a 

forward-looking statement cannot be determined with certainty, particularly with respect to the impact of the Merger 

Transaction on us, expected EBITDA, earnings/(loss), earnings/(loss) per share, or estimated future dividends. The 

most relevant assumptions associated with forward-looking statements on announced projects and projects under 

construction, including estimated completion dates and expected capital expenditures, include the following: the 

availability and price of labor and construction materials; the effects of inflation and foreign exchange rates on labor 

and material costs; the effects of interest rates on borrowing costs; the impact of weather and customer, government 

and regulatory approvals on construction and in-service schedules and cost recovery regimes.

Our forward-looking statements are subject to risks and uncertainties pertaining to the impact of the Merger 

Transaction, operating performance, regulatory parameters, dividend policy, project approval and support, renewals 

of rights-of-way, weather, economic and competitive conditions, public opinion, changes in tax laws and tax rates, 

4

5

 
MW

NEB

NGL

Noverco

NYSE

OCI

OEB

OPEB

OPEC

PennEast

ROE

RSU

Sabal Trail

Sandpiper

Seaway Pipeline

Secondary Offering

SEP

TCJA

Texas Eastern

the Court

the Fund

the Fund Group

TSX

Union Gas

U.S. GAAP

Vector

VIE

WCSB

CONVENTIONS

  Megawatts

  National Energy Board

  Natural gas liquids

  Noverco Inc.

New York Stock Exchange

Other comprehensive income/(loss)

  Ontario Energy Board

Other postretirement benefit obligations

Organization of Petroleum Exporting Countries

PennEast Pipeline Company LLC

  Return on equity

Restricted Stock Units

Sabal Trail Transmission, LLC

Sandpiper Project

  Seaway Crude Pipeline System

public on April 18, 2017

Spectra Energy Partners, LP

ENF's secondary offering of 17,347,750 ENF common shares to the 

Spectra Energy

  Spectra Energy Corp

the “Tax Cuts and Jobs Act”

Texas Eastern Transmission, L.P.

United States District Court for the District of Columbia

  The Fund, ECT, EIPLP and the subsidiaries and investees of EIPLP

the Tupper Plants

  Tupper Main and Tupper West gas plants

  Generally accepted accounting principles in the United States of

U.S. L3R Program

  United States portion of the Line 3 Replacement Program

  Enbridge Income Fund

Toronto Stock Exchange

Union Gas Limited

America

  Vector Pipeline L.P.

Variable interest entities

  Western Canadian Sedimentary Basin

The terms "we", "our", "us" and "Enbridge" as used in this report refer collectively to Enbridge Inc. unless 

the context suggests otherwise. These terms are used for convenience only and are not intended as a 

precise description of any separate legal entity within Enbridge.

Unless otherwise specified, all dollar amounts are expressed in Canadian dollars, all references to 

“dollars”, “$” or “C$” are to Canadian dollars and all references to “US$” are to United States dollars. All 

amounts are provided on a before tax basis, unless otherwise stated.

FORWARD-LOOKING INFORMATION

Forward-looking information, or forward-looking statements, have been included in this annual report on Form 10-K to 
provide information about us and our subsidiaries and affiliates, including management’s assessment of Enbridge 
and its subsidiaries’ future plans and operations. This information may not be appropriate for other purposes. 
Forward-looking statements are typically identified by words such as ‘‘anticipate”, “expect”, “project”, “estimate”, 
“forecast”, “plan”, “intend”, “target”, “believe”, “likely” and similar words suggesting future outcomes or statements 
regarding an outlook. Forward-looking information or statements included or incorporated by reference in this 
document include, but are not limited to, statements with respect to the following: expected earnings before interest, 
income taxes and depreciation and amortization (EBITDA); expected earnings/(loss); expected earnings/(loss) per 
share; expected future cash flows; expected performance of the Liquids Pipelines, Gas Transmission and Midstream, 
Gas Distribution, Green Power and Transmission, and Energy Services businesses; financial strength and flexibility; 
expectations on sources of liquidity and sufficiency of financial resources; expected costs related to announced 
projects and projects under construction; expected in-service dates for announced projects and projects under 
construction; expected capital expenditures; expected equity funding requirements for our commercially secured 
growth program; expected future growth and expansion opportunities; expectations about our joint venture partners’ 
ability to complete and finance projects under construction; expected closing of acquisitions and dispositions; 
estimated future dividends; recovery of the costs of the Canadian portion of the Line 3 Replacement Program 
(Canadian L3R Program); expected expansion of the T-South System and Spruce Ridge Program; expected capacity 
of the Hohe See Expansion Offshore Wind Project; expected costs in connection with Line 6A and Line 6B crude oil 
releases; expected effect of Aux Sable Consent Decree; expected future actions of regulators; expected costs related 
to leak remediation and potential insurance recoveries; expectations regarding commodity prices; supply forecasts; 
expectations regarding the impact of the Merger Transaction including our combined scale, financial flexibility, growth 
program, future business prospects and performance; impact of the Canadian L3R Program on existing integrity 
programs; the sponsored vehicle strategy; dividend payout policy; dividend growth and dividend payout expectation; 
expectations on impact of hedging program; and expectations resulting from the successful execution of our 
2018-2020 Strategic Plan.

Although we believe these forward-looking statements are reasonable based on the information available on the date 
such statements are made and processes used to prepare the information, such statements are not guarantees of 
future performance and readers are cautioned against placing undue reliance on forward-looking statements. By their 
nature, these statements involve a variety of assumptions, known and unknown risks and uncertainties and other 
factors, which may cause actual results, levels of activity and achievements to differ materially from those expressed 
or implied by such statements. Material assumptions include assumptions about the following: the expected supply of 
and demand for crude oil, natural gas, natural gas liquids (NGL) and renewable energy; prices of crude oil, natural 
gas, NGL and renewable energy; exchange rates; inflation; interest rates; availability and price of labor and 
construction materials; operational reliability; customer and regulatory approvals; maintenance of support and 
regulatory approvals for our projects; anticipated in-service dates; weather; the realization of anticipated benefits and 
synergies of the Merger Transaction; governmental legislation; acquisitions and the timing thereof; the success of 
integration plans; impact of the dividend policy on our future cash flows; credit ratings; capital project funding; 
expected EBITDA; expected earnings/(loss); expected earnings/(loss) per share; expected future cash flows and 
estimated future dividends. Assumptions regarding the expected supply of and demand for crude oil, natural gas, 
NGL and renewable energy, and the prices of these commodities, are material to and underlie all forward-looking 
statements, as they may impact current and future levels of demand for our services. Similarly, exchange rates, 
inflation and interest rates impact the economies and business environments in which we operate and may impact 
levels of demand for our services and cost of inputs, and are therefore inherent in all forward-looking statements. Due 
to the interdependencies and correlation of these macroeconomic factors, the impact of any one assumption on a 
forward-looking statement cannot be determined with certainty, particularly with respect to the impact of the Merger 
Transaction on us, expected EBITDA, earnings/(loss), earnings/(loss) per share, or estimated future dividends. The 
most relevant assumptions associated with forward-looking statements on announced projects and projects under 
construction, including estimated completion dates and expected capital expenditures, include the following: the 
availability and price of labor and construction materials; the effects of inflation and foreign exchange rates on labor 
and material costs; the effects of interest rates on borrowing costs; the impact of weather and customer, government 
and regulatory approvals on construction and in-service schedules and cost recovery regimes.

Our forward-looking statements are subject to risks and uncertainties pertaining to the impact of the Merger 
Transaction, operating performance, regulatory parameters, dividend policy, project approval and support, renewals 
of rights-of-way, weather, economic and competitive conditions, public opinion, changes in tax laws and tax rates, 

4

5

 
changes in trade agreements, exchange rates, interest rates, commodity prices, political decisions and supply of and 
demand for commodities, including but not limited to those risks and uncertainties discussed in this annual report on 
Form 10-K and in our other filings with Canadian and United States securities regulators. The impact of any one risk, 
uncertainty or factor on a particular forward-looking statement is not determinable with certainty as these are 
interdependent and our future course of action depends on management’s assessment of all information available at 
the relevant time. Except to the extent required by applicable law, Enbridge Inc. assumes no obligation to publicly 
update or revise any forward-looking statements made in this annual report on Form 10-K or otherwise, whether as a 
result of new information, future events or otherwise. All subsequent forward-looking statements, whether written or 
oral, attributable to us or persons acting on our behalf, are expressly qualified in their entirety by these cautionary 
statements.

ITEM 1. BUSINESS

PART I

Enbridge is a North American energy infrastructure company with strategic business platforms that 

include an extensive network of crude oil, liquids and natural gas pipelines, regulated natural gas 

distribution utilities and renewable power generation assets. We deliver an average of 2.8 million barrels 

of crude oil each day through our Mainline and Express Pipeline, and account for approximately 65% of 

United States-bound Canadian crude oil exports. We also move approximately 20% of all natural gas 

consumed in the United States, serving key supply basins and demand markets. Our regulated utilities 

serve approximately 3.7 million retail customers in Ontario, Quebec and New Brunswick. We also have 

interests in more than 2,500 megawatts (MW) of net renewable power generation capacity in North 

America and Europe. We have ranked on the Global 100 Most Sustainable Corporations index for the 

past eight years. Our common shares trade on the Toronto Stock Exchange (TSX) and the New York 

Stock Exchange (NYSE) under the symbol ENB. We were incorporated on April 13, 1970 under the 

Companies Ordinance of the Northwest Territories and were continued under the Canada Business 

Corporations Act on December 15, 1987.

On February 27, 2017, we announced the closing of the combination of Enbridge and Spectra Energy 

Corp. (Spectra Energy) through a stock-for-stock merger transaction (the Merger Transaction).

Spectra Energy, now wholly-owned by Enbridge, is one of North America’s leading natural gas delivery 

companies owning and operating a large, diversified and complementary portfolio of gas transmission, 

midstream gathering and processing and distribution assets. Spectra Energy also owns and operates a 

crude oil pipeline system that connects Canadian and United States producers to refineries in the United 

States Rocky Mountain and Midwest regions. The combination with Spectra Energy has created the 

largest energy infrastructure company in North America with an extensive portfolio of energy assets that 

are well positioned to serve key supply basins and end use markets and multiple business platforms 

through which to drive future growth. 

A more detailed description of each of the businesses and underlying assets acquired through the Merger 

Transaction is provided below under Business Segments. 

CORPORATE VISION AND STRATEGY

VISION

Our vision is to be the leading energy delivery company in North America. In pursuing this vision, we play 

a critical role in enabling the economic well-being and quality of life of North Americans, who depend on 

access to plentiful energy. We transport, distribute and generate energy, and our primary purpose is to 

deliver the energy North Americans need, in the safest, most reliable and most efficient way possible.

Among our peers, we strive to be the leader, which means not only leadership in value creation for 

shareholders, but also leadership with respect to worker and public safety and environmental protection 

associated with our energy delivery infrastructure, as well as in customer service, community investment 

and employee satisfaction.

STRATEGY

Today, our business is balanced between oil and natural gas. The Merger Transaction combined Spectra 

Energy’s natural gas transmission franchise, with our liquids pipeline business. Further, the Merger 

Transaction doubled the size of our utility business and now delivers energy to more than 3.7 million 

customers. This footprint provides us with scale and diversity to compete, to grow and to provide the 

energy people need and want. 

6

7

changes in trade agreements, exchange rates, interest rates, commodity prices, political decisions and supply of and 

demand for commodities, including but not limited to those risks and uncertainties discussed in this annual report on 

Form 10-K and in our other filings with Canadian and United States securities regulators. The impact of any one risk, 

uncertainty or factor on a particular forward-looking statement is not determinable with certainty as these are 

interdependent and our future course of action depends on management’s assessment of all information available at 

the relevant time. Except to the extent required by applicable law, Enbridge Inc. assumes no obligation to publicly 

update or revise any forward-looking statements made in this annual report on Form 10-K or otherwise, whether as a 

result of new information, future events or otherwise. All subsequent forward-looking statements, whether written or 

oral, attributable to us or persons acting on our behalf, are expressly qualified in their entirety by these cautionary 

statements.

ITEM 1. BUSINESS

PART I

Enbridge is a North American energy infrastructure company with strategic business platforms that 
include an extensive network of crude oil, liquids and natural gas pipelines, regulated natural gas 
distribution utilities and renewable power generation assets. We deliver an average of 2.8 million barrels 
of crude oil each day through our Mainline and Express Pipeline, and account for approximately 65% of 
United States-bound Canadian crude oil exports. We also move approximately 20% of all natural gas 
consumed in the United States, serving key supply basins and demand markets. Our regulated utilities 
serve approximately 3.7 million retail customers in Ontario, Quebec and New Brunswick. We also have 
interests in more than 2,500 megawatts (MW) of net renewable power generation capacity in North 
America and Europe. We have ranked on the Global 100 Most Sustainable Corporations index for the 
past eight years. Our common shares trade on the Toronto Stock Exchange (TSX) and the New York 
Stock Exchange (NYSE) under the symbol ENB. We were incorporated on April 13, 1970 under the 
Companies Ordinance of the Northwest Territories and were continued under the Canada Business 
Corporations Act on December 15, 1987.

On February 27, 2017, we announced the closing of the combination of Enbridge and Spectra Energy 
Corp. (Spectra Energy) through a stock-for-stock merger transaction (the Merger Transaction).

Spectra Energy, now wholly-owned by Enbridge, is one of North America’s leading natural gas delivery 
companies owning and operating a large, diversified and complementary portfolio of gas transmission, 
midstream gathering and processing and distribution assets. Spectra Energy also owns and operates a 
crude oil pipeline system that connects Canadian and United States producers to refineries in the United 
States Rocky Mountain and Midwest regions. The combination with Spectra Energy has created the 
largest energy infrastructure company in North America with an extensive portfolio of energy assets that 
are well positioned to serve key supply basins and end use markets and multiple business platforms 
through which to drive future growth. 

A more detailed description of each of the businesses and underlying assets acquired through the Merger 
Transaction is provided below under Business Segments. 

CORPORATE VISION AND STRATEGY

VISION
Our vision is to be the leading energy delivery company in North America. In pursuing this vision, we play 
a critical role in enabling the economic well-being and quality of life of North Americans, who depend on 
access to plentiful energy. We transport, distribute and generate energy, and our primary purpose is to 
deliver the energy North Americans need, in the safest, most reliable and most efficient way possible.

Among our peers, we strive to be the leader, which means not only leadership in value creation for 
shareholders, but also leadership with respect to worker and public safety and environmental protection 
associated with our energy delivery infrastructure, as well as in customer service, community investment 
and employee satisfaction.

STRATEGY
Today, our business is balanced between oil and natural gas. The Merger Transaction combined Spectra 
Energy’s natural gas transmission franchise, with our liquids pipeline business. Further, the Merger 
Transaction doubled the size of our utility business and now delivers energy to more than 3.7 million 
customers. This footprint provides us with scale and diversity to compete, to grow and to provide the 
energy people need and want. 

6

7

Our 2018-2020 Strategic Plan (the Strategic Plan) sets a course for us for the next three years. Our 
focus, as set out in our Strategic Plan, is on what we do best - growing our pipeline and utility assets, and 
selling or monetizing assets that do not fit this model. Our core assets have highly predictable cash flows, 
align with our low risk value proposition and are expected to create a large set of organic growth 
opportunities through which to expand and extend our existing assets. With a significant amount of 
growth capital already secured through 2020, project execution, cost management and maintaining our 
financial strength and flexibility remain critical to our long-term success.

To achieve our objectives, we are focused on delivering on the strategic priorities outlined below.

Commitment to Safety and Operational Reliability
Safety and operational reliability remain the foundation for the Strategic Plan. The commitment to safety 
and operational reliability means achieving and maintaining industry leadership in safety (process, public 
and personal) and ensuring the reliability and integrity of the systems we operate in order to generate, 
transport and deliver energy and to protect the environment. 

Maximize Value of Core Businesses
We are re-positioning our asset mix to a pure regulated pipeline and utility business model focusing on 
our core businesses: liquids pipelines and terminals; gas transmission and storage; and natural gas 
distribution. Our core assets have similar characteristics: 

•  Strategic positioning - between key supply basins with large, growing demand markets; 
•  Strong commercial underpinnings - long-term contracts, established customers, strong risk-

adjusted returns; and 

•  Organic growth opportunities - the ability to create value by extending, expanding, repurposing, 

reconfiguring and replacing assets already in the ground. 

By focusing on our core businesses and a regulated pipeline and utility model, we believe we will 
continue to deliver on the low-risk, reliable value proposition that has served our shareholders well over 
the years.

Complete Integration and Transformation
In 2017 we made substantial progress on the integration of Spectra Energy including operations and 
support functions, policies, management systems and establishment of a new, streamlined and lower cost 
organizational structure soon after close of the transaction. Simultaneous capture of cost savings due to 
combination synergies remain on track and slightly ahead of plan. Execution of planned synergies in 2018 
and integration activities relating to information systems and other capabilities will continue. Prior to and 
in conjunction with this integration, given the increasingly competitive nature of our business, we 
established a target of top quartile cost performance. To achieve this, in conjunction with the integration 
we launched several projects to transform various processes, organizational capabilities and information 
systems infrastructure to improve how we do business and continuously drive cost efficiencies. 
Integration, these transformation projects, and our focus on cost leadership represent key priorities 
through the planning horizon.

Execute Capital Program 
Our objective is to safely deliver projects on time and on budget and at the lowest practical cost while 
maintaining the highest standards for safety, quality, customer satisfaction and environmental and 
regulatory compliance. Project execution is integral to our near-term financial performance and balance 
sheet strength, but also to positioning the business for the long-term. Over the next three years, we plan 
to spend $22 billion on previously secured organic growth opportunities within our core businesses. Our 
secured capital program includes projects such as the Line 3 Replacement Program (L3R Program), 
NEXUS, Valley Crossing and the Hohe See Offshore Wind Project.

Through our major projects group, we continue to build upon and enhance the key elements of our project 

management processes, including: employee and contractor safety; long-term supply chain agreements; 

quality design, materials and construction; extensive regulatory and public consultation; robust cost, 

schedule and risk controls; and efficient transition of projects to operating units. Ensuring our project 

execution costs remain competitive in any market environment is a priority. 

Strengthen Financial Position

The maintenance of financial strength is crucial to our growth strategy. Our financing strategies are 

designed to ensure we have sufficient financial flexibility to meet our capital requirements. To support this 

objective, we develop financing plans and strategies to diversify our funding sources and maintain 

substantial standby bank credit capacity and access to capital markets in both Canada and the United 

States. For further discussion on our financing strategies, refer to Part II. Item 7. Management's 

Discussion and Analysis and Results of Operations - Liquidity and Capital Resources.

Our funding plan is designed to sustain strong investment grade credit ratings, which are key to cost-

effectively funding future growth. We have already begun taking actions to accelerate planned 

deleveraging and balance sheet strengthening, including the issuance of approximately $2 billion of new 

common equity and $500 million in preferred equity financing in late 2017. Over the remainder of the 

current planning horizon (2018-2020) we plan to continue to strengthen the balance sheet while building 

out the balance of our secured growth program. We plan to accomplish this through issuing additional 

hybrid securities, issuance of common equity through our Dividend Reinvestment Program and the sale 

or monetization of non-core assets. 

Consistent with our risk management policy, we have implemented a comprehensive long-term economic 

hedging program to mitigate the impact of fluctuations in interest rates, foreign exchange and commodity 

price on our earnings and cash flow. This economic hedging program together with ongoing management 

of credit exposures to customers, suppliers and counterparties helps reinforce our reliable business 

model, which is one of the key tenets of our investor value proposition. For further details, refer to Part II. 

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

We continually assess ways to generate value for shareholders, including reviewing opportunities that 

may lead to acquisitions, dispositions or other strategic transactions, some of which may be material. 

Opportunities are screened, analyzed and assessed using strict operating, strategic and financial criteria 

with the objective of ensuring effective deployment of capital and enduring financial strength and stability.

Secure the Longer-Term Future

A key strategic priority is the development and enhancement of strategic growth platforms from which to 

secure our long-term future. We expect to benefit from a diversified set of strategic growth platforms, 

including liquids and gas pipelines, an attractive portfolio of regulated natural gas distribution utilities and 

a growing offshore renewable power generation business. The strength of the combined assets and 

geographic footprint will generate highly transparent and predictable cash flows underpinned by high 

quality commercial constructs that align closely with our investor value proposition and significant ongoing 

organic growth potential.

MAINTAIN THE FOUNDATION

Uphold Enbridge Values

We adhere to a strong set of core values that govern how we conduct our business and pursue strategic 

priorities, as articulated in our value statement: “Enbridge employees demonstrate integrity, safety and 

respect in support of our communities, the environment and each other”. Employees are expected to 

uphold these values in their interactions with each other, customers, suppliers, landowners, community 

members and all others with whom we deal and ensure our business decisions are consistent with these 

values. Employees and contractors are required, on an annual basis, to certify their compliance with our 

Statement on Business Conduct.

8

9

Our 2018-2020 Strategic Plan (the Strategic Plan) sets a course for us for the next three years. Our 

focus, as set out in our Strategic Plan, is on what we do best - growing our pipeline and utility assets, and 

selling or monetizing assets that do not fit this model. Our core assets have highly predictable cash flows, 

align with our low risk value proposition and are expected to create a large set of organic growth 

opportunities through which to expand and extend our existing assets. With a significant amount of 

growth capital already secured through 2020, project execution, cost management and maintaining our 

financial strength and flexibility remain critical to our long-term success.

To achieve our objectives, we are focused on delivering on the strategic priorities outlined below.

Commitment to Safety and Operational Reliability

Safety and operational reliability remain the foundation for the Strategic Plan. The commitment to safety 

and operational reliability means achieving and maintaining industry leadership in safety (process, public 

and personal) and ensuring the reliability and integrity of the systems we operate in order to generate, 

transport and deliver energy and to protect the environment. 

Maximize Value of Core Businesses

We are re-positioning our asset mix to a pure regulated pipeline and utility business model focusing on 

our core businesses: liquids pipelines and terminals; gas transmission and storage; and natural gas 

distribution. Our core assets have similar characteristics: 

•  Strategic positioning - between key supply basins with large, growing demand markets; 

•  Strong commercial underpinnings - long-term contracts, established customers, strong risk-

adjusted returns; and 

•  Organic growth opportunities - the ability to create value by extending, expanding, repurposing, 

reconfiguring and replacing assets already in the ground. 

By focusing on our core businesses and a regulated pipeline and utility model, we believe we will 

continue to deliver on the low-risk, reliable value proposition that has served our shareholders well over 

the years.

Complete Integration and Transformation

In 2017 we made substantial progress on the integration of Spectra Energy including operations and 

support functions, policies, management systems and establishment of a new, streamlined and lower cost 

organizational structure soon after close of the transaction. Simultaneous capture of cost savings due to 

combination synergies remain on track and slightly ahead of plan. Execution of planned synergies in 2018 

and integration activities relating to information systems and other capabilities will continue. Prior to and 

in conjunction with this integration, given the increasingly competitive nature of our business, we 

established a target of top quartile cost performance. To achieve this, in conjunction with the integration 

we launched several projects to transform various processes, organizational capabilities and information 

systems infrastructure to improve how we do business and continuously drive cost efficiencies. 

Integration, these transformation projects, and our focus on cost leadership represent key priorities 

through the planning horizon.

Execute Capital Program 

Our objective is to safely deliver projects on time and on budget and at the lowest practical cost while 

maintaining the highest standards for safety, quality, customer satisfaction and environmental and 

regulatory compliance. Project execution is integral to our near-term financial performance and balance 

sheet strength, but also to positioning the business for the long-term. Over the next three years, we plan 

to spend $22 billion on previously secured organic growth opportunities within our core businesses. Our 

secured capital program includes projects such as the Line 3 Replacement Program (L3R Program), 

NEXUS, Valley Crossing and the Hohe See Offshore Wind Project.

Through our major projects group, we continue to build upon and enhance the key elements of our project 
management processes, including: employee and contractor safety; long-term supply chain agreements; 
quality design, materials and construction; extensive regulatory and public consultation; robust cost, 
schedule and risk controls; and efficient transition of projects to operating units. Ensuring our project 
execution costs remain competitive in any market environment is a priority. 

Strengthen Financial Position
The maintenance of financial strength is crucial to our growth strategy. Our financing strategies are 
designed to ensure we have sufficient financial flexibility to meet our capital requirements. To support this 
objective, we develop financing plans and strategies to diversify our funding sources and maintain 
substantial standby bank credit capacity and access to capital markets in both Canada and the United 
States. For further discussion on our financing strategies, refer to Part II. Item 7. Management's 
Discussion and Analysis and Results of Operations - Liquidity and Capital Resources.

Our funding plan is designed to sustain strong investment grade credit ratings, which are key to cost-
effectively funding future growth. We have already begun taking actions to accelerate planned 
deleveraging and balance sheet strengthening, including the issuance of approximately $2 billion of new 
common equity and $500 million in preferred equity financing in late 2017. Over the remainder of the 
current planning horizon (2018-2020) we plan to continue to strengthen the balance sheet while building 
out the balance of our secured growth program. We plan to accomplish this through issuing additional 
hybrid securities, issuance of common equity through our Dividend Reinvestment Program and the sale 
or monetization of non-core assets. 

Consistent with our risk management policy, we have implemented a comprehensive long-term economic 
hedging program to mitigate the impact of fluctuations in interest rates, foreign exchange and commodity 
price on our earnings and cash flow. This economic hedging program together with ongoing management 
of credit exposures to customers, suppliers and counterparties helps reinforce our reliable business 
model, which is one of the key tenets of our investor value proposition. For further details, refer to Part II. 
Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

We continually assess ways to generate value for shareholders, including reviewing opportunities that 
may lead to acquisitions, dispositions or other strategic transactions, some of which may be material. 
Opportunities are screened, analyzed and assessed using strict operating, strategic and financial criteria 
with the objective of ensuring effective deployment of capital and enduring financial strength and stability.

Secure the Longer-Term Future
A key strategic priority is the development and enhancement of strategic growth platforms from which to 
secure our long-term future. We expect to benefit from a diversified set of strategic growth platforms, 
including liquids and gas pipelines, an attractive portfolio of regulated natural gas distribution utilities and 
a growing offshore renewable power generation business. The strength of the combined assets and 
geographic footprint will generate highly transparent and predictable cash flows underpinned by high 
quality commercial constructs that align closely with our investor value proposition and significant ongoing 
organic growth potential.

MAINTAIN THE FOUNDATION
Uphold Enbridge Values
We adhere to a strong set of core values that govern how we conduct our business and pursue strategic 
priorities, as articulated in our value statement: “Enbridge employees demonstrate integrity, safety and 
respect in support of our communities, the environment and each other”. Employees are expected to 
uphold these values in their interactions with each other, customers, suppliers, landowners, community 
members and all others with whom we deal and ensure our business decisions are consistent with these 
values. Employees and contractors are required, on an annual basis, to certify their compliance with our 
Statement on Business Conduct.

8

9

LIQUIDS PIPELINES

Liquids Pipelines consists of common carrier and contract pipelines that transport crude oil, natural gas 

liquids (NGL) and refined products and terminals in Canada and the United States, including the 

Canadian Mainline, Lakehead Pipeline System (Lakehead System), Regional Oil Sands System, Gulf 

Coast and Mid-Continent, Southern Lights Pipeline, Express-Platte System, Bakken System and other 

feeder pipelines.

Maintain Our License to Operate
Earning and sustaining the trust of our stakeholders is critical to our ability to execute on our growth plans 
and ensure that our business strategy, as well as our corporate policies and management systems, are 
continuously informed by the social and environmental context surrounding our projects and operations. A 
key priority is to establish and maintain constructive relationships with local stakeholders over the life-
cycle of our assets. The linear nature of our energy infrastructure puts us in contact with a large number 
of diverse communities, landowners and regulatory bodies across North America. Because Indigenous 
communities have distinct rights, we have dedicated resources focused on Indigenous consultation and 
inclusion. Early identification of local concerns enables us to respond quickly and take a proactive 
approach to problem solving. Early engagement also enables us to provide expanded opportunities for 
socio-economic participation through employment, training, and procurement, as well as through the 
development of joint initiatives on safety, environmental and cultural protection. More broadly, our goal is 
to build awareness and balanced dialogue on the role and value of the energy we deliver to our society 
and economy. We communicate with different stakeholders, decision makers, customers and other 
interested groups - including investors, employees and the public - about the access we provide to safe, 
reliable, affordable energy. 

We provide annual progress updates related to the above initiatives in our annual CSR Report which can 
be found at http://csr.enbridge.com. Unless otherwise specifically stated, none of the information 
contained on, or connected to, the Enbridge website is incorporated by reference in, or otherwise 
part of, this Annual Report on Form 10-K.

Attract, Retain and Develop Highly Capable People
Investing in the attraction, retention and development of employees and future leaders is fundamental to 
executing our growth strategy and creating sustainability for future success. We focus on enhancing the 
capability of our people to maximize the potential of our organization and undertake various activities 
such as offering accelerated leadership development programs, enhancing career opportunities and 
building change management capabilities throughout the enterprise so that projects and initiatives 
achieve intended benefits. Furthermore, we strive to maintain industry competitive compensation and 
retention programs that provide both short-term and long-term performance incentives to our employees.

BUSINESS SEGMENTS

Our activities are carried out through five business segments: Liquids Pipelines; Gas Transmission and 
Midstream; Gas Distribution; Green Power and Transmission; and Energy Services, as discussed below.

10

11

 
LIQUIDS PIPELINES

Liquids Pipelines consists of common carrier and contract pipelines that transport crude oil, natural gas 
liquids (NGL) and refined products and terminals in Canada and the United States, including the 
Canadian Mainline, Lakehead Pipeline System (Lakehead System), Regional Oil Sands System, Gulf 
Coast and Mid-Continent, Southern Lights Pipeline, Express-Platte System, Bakken System and other 
feeder pipelines.

Maintain Our License to Operate

Earning and sustaining the trust of our stakeholders is critical to our ability to execute on our growth plans 

and ensure that our business strategy, as well as our corporate policies and management systems, are 

continuously informed by the social and environmental context surrounding our projects and operations. A 

key priority is to establish and maintain constructive relationships with local stakeholders over the life-

cycle of our assets. The linear nature of our energy infrastructure puts us in contact with a large number 

of diverse communities, landowners and regulatory bodies across North America. Because Indigenous 

communities have distinct rights, we have dedicated resources focused on Indigenous consultation and 

inclusion. Early identification of local concerns enables us to respond quickly and take a proactive 

approach to problem solving. Early engagement also enables us to provide expanded opportunities for 

socio-economic participation through employment, training, and procurement, as well as through the 

development of joint initiatives on safety, environmental and cultural protection. More broadly, our goal is 

to build awareness and balanced dialogue on the role and value of the energy we deliver to our society 

and economy. We communicate with different stakeholders, decision makers, customers and other 

interested groups - including investors, employees and the public - about the access we provide to safe, 

reliable, affordable energy. 

We provide annual progress updates related to the above initiatives in our annual CSR Report which can 

be found at http://csr.enbridge.com. Unless otherwise specifically stated, none of the information 

contained on, or connected to, the Enbridge website is incorporated by reference in, or otherwise 

part of, this Annual Report on Form 10-K.

Attract, Retain and Develop Highly Capable People

Investing in the attraction, retention and development of employees and future leaders is fundamental to 

executing our growth strategy and creating sustainability for future success. We focus on enhancing the 

capability of our people to maximize the potential of our organization and undertake various activities 

such as offering accelerated leadership development programs, enhancing career opportunities and 

building change management capabilities throughout the enterprise so that projects and initiatives 

achieve intended benefits. Furthermore, we strive to maintain industry competitive compensation and 

retention programs that provide both short-term and long-term performance incentives to our employees.

BUSINESS SEGMENTS

Our activities are carried out through five business segments: Liquids Pipelines; Gas Transmission and 

Midstream; Gas Distribution; Green Power and Transmission; and Energy Services, as discussed below.

10

11

Liquids Pipeline

Crude Storage or Terminal

Rail 

Trucking Facility

EdmontonEdmontonCalgaryCalgaryHardistyHardistyNew OrleansNew OrleansBuffaloBuffaloSalisburySalisburyGurleyGurleyGuernseyGuernseyCasperCasperEdgarEdgarBuffaloBuffaloChathamChathamWestoverWestoverSarniaSarniaStockbridgeStockbridgeToledoToledoPort ArthurPort ArthurTorontoTorontoFlanaganFlanaganChannahonChannahonChicagoChicagoMontrealMontrealHoustonHoustonSuperiorSuperiorClearbrookClearbrookGretnaGretnaCromerCromerKerrobertKerrobertReginaReginaMinotMinotFortMcMurrayFortMcMurrayCheechamCheechamAthabascaAthabascaZamaZamaNorman WellsNorman WellsPatokaPatokaWood RiverWood RiverCushingCushing 
MAINLINE SYSTEM
The mainline system is comprised of the Canadian Mainline and the Lakehead System. The Canadian 
Mainline is a common carrier pipeline system which transports various grades of oil and other liquid 
hydrocarbons within western Canada and from western Canada to the Canada/United States border near 
Gretna, Manitoba and Neche, North Dakota and from the United States/Canada border near Port Huron, 
Michigan and Sarnia, Ontario to eastern Canada and the northeastern United States. The Canadian 
Mainline includes six adjacent pipelines, with a combined operating capacity of approximately 2.85 million 
barrels per day (bpd) that connect with the Lakehead System at the Canada/United States border, as well 
as five pipelines that deliver crude oil and refined products into eastern Canada and the northeastern 
United States. It also includes certain related pipelines and infrastructure, including decommissioned and 
deactivated pipelines. We have operated, and frequently expanded, the Canadian Mainline since 1949. 
Effective September 1, 2015, the closing date of the Canadian Restructuring Plan (as defined below), we 
transferred the Canadian Mainline to the Fund Group (comprising Enbridge Income Fund (the Fund), 
Enbridge Commercial Trust, Enbridge Income Partners LP (EIPLP) and the subsidiaries
of EIPLP) - refer to Part II. Item 7. Management's Discussion and Analysis of Financial Condition and 
Results of Operations - Canadian Restructuring Plan. The Lakehead System is the portion of the mainline 
system in the United States that continues to be managed by us through our subsidiaries, Enbridge 
Energy Partners, L.P. (EEP) and Enbridge Energy, Limited Partnership. It is an interstate common carrier 
pipeline system regulated by the Federal Energy Regulatory Commission (FERC), and is the primary 
transporter of crude oil and liquid petroleum from Western Canada to the United States. 

Competitive Toll Settlement
The Competitive Toll Settlement (CTS) is the current framework governing tolls paid for products shipped 
on the Canadian Mainline, with the exception of Lines 8 and 9 which are tolled on a separate basis. The 
10-year settlement was negotiated by representatives of Enbridge, the Canadian Association of 
Petroleum Producers and shippers on the Canadian Mainline. It was approved by the National Energy 
Board (NEB) on June 24, 2011 and took effect on July 1, 2011. The CTS provides for a Canadian Local 
Toll (CLT) for deliveries within western Canada, which is based on the 2011 Incentive Tolling Settlement 
toll, as well as an International Joint Tariff (IJT) for crude oil shipments originating in western Canada on 
the Canadian Mainline and delivered into the United States, via the Lakehead System, and into eastern 
Canada. These tolls are denominated in United States dollars. The IJT is designed to provide shippers on 
the mainline system with a stable and competitive long-term toll, thereby preserving and enhancing 
throughput on both the Canadian Mainline and the Lakehead System. The CLT and the IJT were both 
established at the time of implementation of the CTS and are adjusted annually, on July 1 of each year, at 
a rate equal to 75% of the Canada Gross Domestic Product at Market Price Index published by Statistics 
Canada. Two years prior to the end of the term of the CTS, we and the shippers will establish a group for 
the purposes of negotiating a new settlement to replace the CTS once it expires. 

Although the CTS has a 10-year term, it does not require shippers to commit to certain volumes. Shippers 
nominate volumes on a monthly basis and we allocate capacity to maximize the efficiency of the 
Canadian Mainline. 

Local tolls for service on the Lakehead System are not affected by the CTS and continue to be 
established pursuant to the Lakehead System’s existing toll agreements, as described below. Under the 
terms of the IJT agreement between us and EEP, the Canadian Mainline’s share of the IJT relating to 
pipeline transportation of a batch from any western Canada receipt point to the United States border is 
equal to the IJT applicable to that batch’s United States delivery point less the Lakehead System’s local 
toll to that delivery point. This amount is referred to as the Canadian Mainline IJT Residual Benchmark 
Toll and is denominated in United States dollars. 

Lakehead System Local Tolls

Transportation rates are governed by the FERC for deliveries from the Canada/United States border near 

Neche, North Dakota and from Clearbrook, Minnesota to certain principal delivery points. The Lakehead 

System periodically adjusts these transportation rates as allowed under the FERC’s index methodology 

and tariff agreements, the main components of which are base rates and Facilities Surcharge 

Mechanism. Base rates, the base portion of the transportation rates for the Lakehead System, are subject 

to an annual adjustment which cannot exceed established ceiling rates as approved by the FERC. The 

Facilities Surcharge Mechanism allows the Lakehead System to recover costs associated with certain 

shipper-requested projects through an incremental surcharge in addition to the existing base rates, and is 

subject to annual adjustment on April 1.

REGIONAL OIL SANDS SYSTEM 

The Regional Oil Sands System includes four intra-Alberta long haul pipelines, the Athabasca Pipeline, 

Waupisoo Pipeline, Woodland Pipeline and the recently completed Wood Buffalo Extension/Athabasca 

Twin pipeline system as well as two large terminals: the Athabasca Terminal located north of Fort 

McMurray, Alberta and the Cheecham Terminal, located south of Fort McMurray. The Regional Oil Sands 

System also includes numerous laterals and related facilities which provide access for oil sands 

production to the system, and a long-haul intra-Alberta pipeline that transports diluent from the Edmonton, 

Alberta region into the oil sands producing regions located north and south of Fort McMurray, Alberta. The 

Regional Oil Sands System currently serves twelve producing oil sands projects. 

The Athabasca Pipeline is a 540-kilometer (335-mile) synthetic and heavy oil pipeline. Built in 1999, it 

links the Athabasca oil sands in the Fort McMurray region to the major Alberta crude oil pipeline hub at 

Hardisty, Alberta. The Athabasca Pipeline’s capacity is 570,000 bpd, depending on crude slate. We have 

long-term take-or-pay and non take-or-pay agreements with multiple shippers on the Athabasca Pipeline. 

Revenues are recorded based on the contract terms negotiated with the major shippers, rather than the 

cash tolls collected.

In 2017, we completed the twinning of the Athabasca Pipeline and the Wood Buffalo Extension, which 

were key components of our Regional Oil Sands Optimization Project. The Athabasca Pipeline Twin, 

completed in January 2017, twinned the southern section of the Athabasca Pipeline with a 36-inch 

diameter pipeline from Kirby Lake, Alberta to the major Alberta pipeline hub at Hardisty, Alberta. The initial 

capacity of the Athabasca Pipeline Twin is 450,000 bpd and it can be further expanded in the future to 

800,000 bpd through additional pumping horsepower. In December 2017, the Wood Buffalo Extension, a 

36-inch diameter pipeline between Cheecham, Alberta and Kirby Lake, Alberta, went into service. The 

integrated Wood Buffalo Extension and Athabasca Pipeline Twin transports diluted bitumen from multiple 

oil sands producers. 

The Waupisoo Pipeline is a 380-kilometer (236-mile) synthetic and heavy oil pipeline that entered service 

in 2008 and provides access to the Edmonton market for oil sands producers. The Waupisoo Pipeline 

originates at the Cheecham Terminal and terminates at the major Alberta pipeline hub at Edmonton. The 

pipeline has a capacity of 550,000 bpd, depending on the crude slate. We have long-term take-or-pay 

agreements with multiple shippers on the Waupisoo Pipeline who have collectively contracted for 80% to 

90% of the capacity, subject to the timing of when shippers’ commitments commence and expire. 

The Woodland Pipeline is a 50/50 joint venture between us and Imperial Oil Resources Ventures Limited 

and ExxonMobil Canada Properties that was constructed in two phases. The first phase, completed in 

2013, consists of a 140-kilometer (87-mile) 36-inch diameter pipeline from the Kearl oil sands mine to the 

Cheecham Terminal, and service on our existing Waupisoo Pipeline from Cheecham to the Edmonton 

area. The second phase extended the Woodland Pipeline south from our Cheecham Terminal to our 

Edmonton Terminal. Completed in 2014, the extension involved the construction of a 385-kilometer (239-

mile) 36-inch diameter pipeline adding 379,000 bpd of capacity to the Regional Oil Sands System. The 

Woodland Pipeline is anchored by long-term commitments. 

12

13

MAINLINE SYSTEM

The mainline system is comprised of the Canadian Mainline and the Lakehead System. The Canadian 

Mainline is a common carrier pipeline system which transports various grades of oil and other liquid 

hydrocarbons within western Canada and from western Canada to the Canada/United States border near 

Gretna, Manitoba and Neche, North Dakota and from the United States/Canada border near Port Huron, 

Michigan and Sarnia, Ontario to eastern Canada and the northeastern United States. The Canadian 

Mainline includes six adjacent pipelines, with a combined operating capacity of approximately 2.85 million 

barrels per day (bpd) that connect with the Lakehead System at the Canada/United States border, as well 

as five pipelines that deliver crude oil and refined products into eastern Canada and the northeastern 

United States. It also includes certain related pipelines and infrastructure, including decommissioned and 

deactivated pipelines. We have operated, and frequently expanded, the Canadian Mainline since 1949. 

Effective September 1, 2015, the closing date of the Canadian Restructuring Plan (as defined below), we 

transferred the Canadian Mainline to the Fund Group (comprising Enbridge Income Fund (the Fund), 

Enbridge Commercial Trust, Enbridge Income Partners LP (EIPLP) and the subsidiaries

of EIPLP) - refer to Part II. Item 7. Management's Discussion and Analysis of Financial Condition and 

Results of Operations - Canadian Restructuring Plan. The Lakehead System is the portion of the mainline 

system in the United States that continues to be managed by us through our subsidiaries, Enbridge 

Energy Partners, L.P. (EEP) and Enbridge Energy, Limited Partnership. It is an interstate common carrier 

pipeline system regulated by the Federal Energy Regulatory Commission (FERC), and is the primary 

transporter of crude oil and liquid petroleum from Western Canada to the United States. 

Competitive Toll Settlement

The Competitive Toll Settlement (CTS) is the current framework governing tolls paid for products shipped 

on the Canadian Mainline, with the exception of Lines 8 and 9 which are tolled on a separate basis. The 

10-year settlement was negotiated by representatives of Enbridge, the Canadian Association of 

Petroleum Producers and shippers on the Canadian Mainline. It was approved by the National Energy 

Board (NEB) on June 24, 2011 and took effect on July 1, 2011. The CTS provides for a Canadian Local 

Toll (CLT) for deliveries within western Canada, which is based on the 2011 Incentive Tolling Settlement 

toll, as well as an International Joint Tariff (IJT) for crude oil shipments originating in western Canada on 

the Canadian Mainline and delivered into the United States, via the Lakehead System, and into eastern 

Canada. These tolls are denominated in United States dollars. The IJT is designed to provide shippers on 

the mainline system with a stable and competitive long-term toll, thereby preserving and enhancing 

throughput on both the Canadian Mainline and the Lakehead System. The CLT and the IJT were both 

established at the time of implementation of the CTS and are adjusted annually, on July 1 of each year, at 

a rate equal to 75% of the Canada Gross Domestic Product at Market Price Index published by Statistics 

Canada. Two years prior to the end of the term of the CTS, we and the shippers will establish a group for 

the purposes of negotiating a new settlement to replace the CTS once it expires. 

Although the CTS has a 10-year term, it does not require shippers to commit to certain volumes. Shippers 

nominate volumes on a monthly basis and we allocate capacity to maximize the efficiency of the 

Canadian Mainline. 

Local tolls for service on the Lakehead System are not affected by the CTS and continue to be 

established pursuant to the Lakehead System’s existing toll agreements, as described below. Under the 

terms of the IJT agreement between us and EEP, the Canadian Mainline’s share of the IJT relating to 

pipeline transportation of a batch from any western Canada receipt point to the United States border is 

equal to the IJT applicable to that batch’s United States delivery point less the Lakehead System’s local 

toll to that delivery point. This amount is referred to as the Canadian Mainline IJT Residual Benchmark 

Toll and is denominated in United States dollars. 

Lakehead System Local Tolls
Transportation rates are governed by the FERC for deliveries from the Canada/United States border near 
Neche, North Dakota and from Clearbrook, Minnesota to certain principal delivery points. The Lakehead 
System periodically adjusts these transportation rates as allowed under the FERC’s index methodology 
and tariff agreements, the main components of which are base rates and Facilities Surcharge 
Mechanism. Base rates, the base portion of the transportation rates for the Lakehead System, are subject 
to an annual adjustment which cannot exceed established ceiling rates as approved by the FERC. The 
Facilities Surcharge Mechanism allows the Lakehead System to recover costs associated with certain 
shipper-requested projects through an incremental surcharge in addition to the existing base rates, and is 
subject to annual adjustment on April 1.

REGIONAL OIL SANDS SYSTEM 
The Regional Oil Sands System includes four intra-Alberta long haul pipelines, the Athabasca Pipeline, 
Waupisoo Pipeline, Woodland Pipeline and the recently completed Wood Buffalo Extension/Athabasca 
Twin pipeline system as well as two large terminals: the Athabasca Terminal located north of Fort 
McMurray, Alberta and the Cheecham Terminal, located south of Fort McMurray. The Regional Oil Sands 
System also includes numerous laterals and related facilities which provide access for oil sands 
production to the system, and a long-haul intra-Alberta pipeline that transports diluent from the Edmonton, 
Alberta region into the oil sands producing regions located north and south of Fort McMurray, Alberta. The 
Regional Oil Sands System currently serves twelve producing oil sands projects. 

The Athabasca Pipeline is a 540-kilometer (335-mile) synthetic and heavy oil pipeline. Built in 1999, it 
links the Athabasca oil sands in the Fort McMurray region to the major Alberta crude oil pipeline hub at 
Hardisty, Alberta. The Athabasca Pipeline’s capacity is 570,000 bpd, depending on crude slate. We have 
long-term take-or-pay and non take-or-pay agreements with multiple shippers on the Athabasca Pipeline. 
Revenues are recorded based on the contract terms negotiated with the major shippers, rather than the 
cash tolls collected.

In 2017, we completed the twinning of the Athabasca Pipeline and the Wood Buffalo Extension, which 
were key components of our Regional Oil Sands Optimization Project. The Athabasca Pipeline Twin, 
completed in January 2017, twinned the southern section of the Athabasca Pipeline with a 36-inch 
diameter pipeline from Kirby Lake, Alberta to the major Alberta pipeline hub at Hardisty, Alberta. The initial 
capacity of the Athabasca Pipeline Twin is 450,000 bpd and it can be further expanded in the future to 
800,000 bpd through additional pumping horsepower. In December 2017, the Wood Buffalo Extension, a 
36-inch diameter pipeline between Cheecham, Alberta and Kirby Lake, Alberta, went into service. The 
integrated Wood Buffalo Extension and Athabasca Pipeline Twin transports diluted bitumen from multiple 
oil sands producers. 

The Waupisoo Pipeline is a 380-kilometer (236-mile) synthetic and heavy oil pipeline that entered service 
in 2008 and provides access to the Edmonton market for oil sands producers. The Waupisoo Pipeline 
originates at the Cheecham Terminal and terminates at the major Alberta pipeline hub at Edmonton. The 
pipeline has a capacity of 550,000 bpd, depending on the crude slate. We have long-term take-or-pay 
agreements with multiple shippers on the Waupisoo Pipeline who have collectively contracted for 80% to 
90% of the capacity, subject to the timing of when shippers’ commitments commence and expire. 

The Woodland Pipeline is a 50/50 joint venture between us and Imperial Oil Resources Ventures Limited 
and ExxonMobil Canada Properties that was constructed in two phases. The first phase, completed in 
2013, consists of a 140-kilometer (87-mile) 36-inch diameter pipeline from the Kearl oil sands mine to the 
Cheecham Terminal, and service on our existing Waupisoo Pipeline from Cheecham to the Edmonton 
area. The second phase extended the Woodland Pipeline south from our Cheecham Terminal to our 
Edmonton Terminal. Completed in 2014, the extension involved the construction of a 385-kilometer (239-
mile) 36-inch diameter pipeline adding 379,000 bpd of capacity to the Regional Oil Sands System. The 
Woodland Pipeline is anchored by long-term commitments. 

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The Norlite Pipeline System (Norlite) was placed into service in May 2017, offering a new diluent supply 
alternative to meet the needs of multiple producers in the Athabasca oil sands region. Norlite is a 24-inch-
diameter pipeline, originating at Enbridge’s Stonefell Terminal, in Strathcona County near Edmonton, 
Alberta and terminating at Enbridge’s Fort McMurray South facility, near Fort McMurray, Alberta, with a 
transfer line to Suncor's East Tank Farm. The pipeline has a capacity of approximately 218,000 bpd of 
diluent, with the potential to be further expanded to approximately 465,000 bpd of capacity with the 
addition of pump stations. Under an agreement with Keyera Corp. (Keyera), Norlite has the right to 
access certain existing capacity on Keyera’s pipelines between Edmonton, Alberta and Stonefell, Alberta 
and, in exchange, Keyera has elected to participate in the new pipeline infrastructure project as a 30% 
non-operating owner. Norlite is anchored by long-term throughput commitments from a number of oil 
sands producers. 

GULF COAST AND MID-CONTINENT
Gulf Coast includes Seaway and Flanagan South Pipeline (Flanagan South), Spearhead Pipeline, as well 
as the Mid-Continent System comprised of Cushing Terminal and the recently sold Ozark Pipeline that is 
managed by us through our subsidiary, EEP.

Seaway Pipeline
In 2011, we acquired a 50% interest in the 1,078-kilometer (670-mile) Seaway Crude Pipeline System 
(Seaway Pipeline), including the 805-kilometer (500-mile), 30-inch diameter long-haul system between 
Cushing, Oklahoma and Freeport, Texas, as well as the Texas City Terminal and Distribution System 
which serve refineries in the Houston and Texas City areas. Seaway Pipeline also includes 8.8 million 
barrels of crude oil storage tank capacity on the Texas Gulf Coast. 

The flow direction of Seaway Pipeline was reversed in 2012, enabling it to transport crude from the 
oversupplied hub in Cushing, Oklahoma to the Gulf Coast. Further pump station additions and 
modifications were completed early 2013, increasing capacity available to shippers from an initial 150,000 
bpd to up to approximately 400,000 bpd, depending on the crude slate. In late 2014, a second line, the 
Seaway Pipeline Twin, was placed into service to more than double the existing capacity to 850,000 bpd. 
Seaway Pipeline also includes a 161-kilometer (100-mile) pipeline from the Enterprise Crude Houston 
crude oil terminal in Houston, Texas to the Port Arthur/Beaumont, Texas refining center. 

Flanagan South Pipeline
Flanagan South is a 950-kilometer (590-mile), 36-inch diameter interstate crude oil pipeline that originates 
at our terminal at Flanagan, Illinois and terminates in Cushing, Oklahoma. Flanagan South and 
associated pumping stations were completed in the fourth quarter of 2014. Flanagan South has an initial 
design capacity of approximately 600,000 bpd.

Spearhead Pipeline
Spearhead Pipeline is a long-haul pipeline that delivers crude oil from Flanagan, Illinois, a delivery point 
on the Lakehead System to Cushing, Oklahoma. The Spearhead pipeline was originally placed into 
service in 2006 and has an initial capacity of 193,300 bpd.

Mid-Continent System 
The Mid-Continent System is comprised of the storage terminals at Cushing, Oklahoma and the recently 
sold Ozark Pipeline. The storage terminals consist of over 80 individual storage tanks ranging in size from 
78,000 to 570,000 barrels. Total storage shell capacity of Cushing Terminal is approximately 20 million 
barrels. A portion of the storage facilities are used for operational purposes, while the remainder is 
contracted to various crude oil market participants for their term storage requirements. Contract fees 
include fixed monthly storage fees, throughput fees for receiving and delivering crude to and from 
connecting pipelines and terminals, and blending fees. 

In December 2016, we entered into an agreement to sell the Ozark Pipeline to a subsidiary of MPLX LP 

for cash proceeds of approximately $294 million (US$220 million), including $13 million (US$10 million) in 

reimbursable costs for additional capital spent by us up to the closing date of the transaction. Sale of the 

Ozark Pipeline system closed on March 1, 2017.

SOUTHERN LIGHTS PIPELINE

Southern Lights Pipeline is a fully-contracted single stream pipeline that ships diluent from the Manhattan 

Terminal near Chicago, Illinois to three western Canadian delivery facilities, located at the Edmonton and 

Hardisty terminals in Alberta and the Kerrobert terminal in Saskatchewan. This 180,000 bpd 16/18/20-inch 

diameter pipeline was placed into service in 2010. Both the Canadian portion of Southern Lights Pipeline 

(Southern Lights Canada) and the United States portion of Southern Lights Pipeline (Southern Lights US) 

receive tariff revenues under long-term contracts with committed shippers. Tariffs provide for recovery of 

all operating and debt financing costs plus a return on equity (ROE) of 10%. Southern Lights Pipeline has 

assigned 10% of the capacity (18,000 bpd) for shippers to ship uncommitted volumes. 

As part of the Canadian Restructuring Plan, effective September 1, 2015, we transferred all Class B units 

of Southern Lights Canada to the Fund Group. Following the closing of the Transaction, the Fund Group 

holds all the ownership, economic interests and voting rights, direct and indirect, in Southern Lights 

Canada. We continue to indirectly own all of the Class B Units of Southern Lights US.

EXPRESS-PLATTE SYSTEM

The Express-Platte system is comprised of both the Express pipeline and the Platte pipeline, and crude 

oil storage of approximately 5.6 million barrels. It is an approximate 2,736-kilometer (1,700-mile) crude oil 

transportation system, which begins in Hardisty, Alberta, and terminates in Wood River, Illinois. The 

Express pipeline carries crude oil to United States refining markets in the Rockies area, including 

Montana, Wyoming, Colorado and Utah. The Platte pipeline, which interconnects with the Express 

pipeline in Casper, Wyoming, transports crude oil predominantly from the Bakken shale and western 

Canada to refineries in the Midwest. Express pipeline capacity is typically committed under long-term 

take-or-pay contracts with shippers. A small portion of Express pipeline capacity and all of the Platte 

pipeline capacity is used by uncommitted shippers who pay only for the pipeline capacity they actually 

use in a given month.

BAKKEN SYSTEM

Our Bakken assets consist of the North Dakota System and the Bakken Pipeline System. The North 

Dakota System is a joint operation that includes a Canadian entity and a United States entity. The United 

States portion of the North Dakota System is comprised of a crude oil gathering and interstate pipeline 

transportation system servicing the Williston Basin in North Dakota and Montana, which includes the 

Bakken and Three Forks formation. The gathering pipelines collect crude oil from nearly 80 different 

receipt facilities located throughout western North Dakota and eastern Montana, with delivery to 

Clearbrook for service on the Lakehead system or a variety of interconnecting pipeline and rail export 

facilities. The United States interstate portion of the system extends from Berthold, North Dakota to the 

International Boundary near North Portal, North Dakota, and connects to the Canadian entity at the 

border to bring the crude oil into Cromer, Manitoba.

Tariffs on the United States portion of the North Dakota System are governed by FERC and include a 

local tariff. The Canadian portion is categorized as a Group 2 pipeline, and as such its tolls are regulated 

by the NEB on a complaint basis. Tolls are based on long-term take-or-pay agreements with anchor 

shippers. 

In February 2017, we closed a transaction to acquire a 49% equity interest in the holding company that 

owns 75% of the Bakken Pipeline System from an affiliate of Energy Transfer Partners, L.P. and Sunoco 

Logistics Partners, L.P. The Bakken Pipeline System connects the prolific Bakken formation in North 

Dakota to markets in eastern PADD II and the United States Gulf Coast, providing customers with access 

to premium markets at a competitive cost. The Bakken Pipeline System consists of the Dakota Access 

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The Norlite Pipeline System (Norlite) was placed into service in May 2017, offering a new diluent supply 

alternative to meet the needs of multiple producers in the Athabasca oil sands region. Norlite is a 24-inch-

diameter pipeline, originating at Enbridge’s Stonefell Terminal, in Strathcona County near Edmonton, 

Alberta and terminating at Enbridge’s Fort McMurray South facility, near Fort McMurray, Alberta, with a 

transfer line to Suncor's East Tank Farm. The pipeline has a capacity of approximately 218,000 bpd of 

diluent, with the potential to be further expanded to approximately 465,000 bpd of capacity with the 

addition of pump stations. Under an agreement with Keyera Corp. (Keyera), Norlite has the right to 

access certain existing capacity on Keyera’s pipelines between Edmonton, Alberta and Stonefell, Alberta 

and, in exchange, Keyera has elected to participate in the new pipeline infrastructure project as a 30% 

non-operating owner. Norlite is anchored by long-term throughput commitments from a number of oil 

sands producers. 

GULF COAST AND MID-CONTINENT

Gulf Coast includes Seaway and Flanagan South Pipeline (Flanagan South), Spearhead Pipeline, as well 

as the Mid-Continent System comprised of Cushing Terminal and the recently sold Ozark Pipeline that is 

managed by us through our subsidiary, EEP.

Seaway Pipeline

In 2011, we acquired a 50% interest in the 1,078-kilometer (670-mile) Seaway Crude Pipeline System 

(Seaway Pipeline), including the 805-kilometer (500-mile), 30-inch diameter long-haul system between 

Cushing, Oklahoma and Freeport, Texas, as well as the Texas City Terminal and Distribution System 

which serve refineries in the Houston and Texas City areas. Seaway Pipeline also includes 8.8 million 

barrels of crude oil storage tank capacity on the Texas Gulf Coast. 

The flow direction of Seaway Pipeline was reversed in 2012, enabling it to transport crude from the 

oversupplied hub in Cushing, Oklahoma to the Gulf Coast. Further pump station additions and 

modifications were completed early 2013, increasing capacity available to shippers from an initial 150,000 

bpd to up to approximately 400,000 bpd, depending on the crude slate. In late 2014, a second line, the 

Seaway Pipeline Twin, was placed into service to more than double the existing capacity to 850,000 bpd. 

Seaway Pipeline also includes a 161-kilometer (100-mile) pipeline from the Enterprise Crude Houston 

crude oil terminal in Houston, Texas to the Port Arthur/Beaumont, Texas refining center. 

Flanagan South Pipeline

Flanagan South is a 950-kilometer (590-mile), 36-inch diameter interstate crude oil pipeline that originates 

at our terminal at Flanagan, Illinois and terminates in Cushing, Oklahoma. Flanagan South and 

associated pumping stations were completed in the fourth quarter of 2014. Flanagan South has an initial 

design capacity of approximately 600,000 bpd.

Spearhead Pipeline

Spearhead Pipeline is a long-haul pipeline that delivers crude oil from Flanagan, Illinois, a delivery point 

on the Lakehead System to Cushing, Oklahoma. The Spearhead pipeline was originally placed into 

service in 2006 and has an initial capacity of 193,300 bpd.

Mid-Continent System 

The Mid-Continent System is comprised of the storage terminals at Cushing, Oklahoma and the recently 

sold Ozark Pipeline. The storage terminals consist of over 80 individual storage tanks ranging in size from 

78,000 to 570,000 barrels. Total storage shell capacity of Cushing Terminal is approximately 20 million 

barrels. A portion of the storage facilities are used for operational purposes, while the remainder is 

contracted to various crude oil market participants for their term storage requirements. Contract fees 

include fixed monthly storage fees, throughput fees for receiving and delivering crude to and from 

connecting pipelines and terminals, and blending fees. 

In December 2016, we entered into an agreement to sell the Ozark Pipeline to a subsidiary of MPLX LP 
for cash proceeds of approximately $294 million (US$220 million), including $13 million (US$10 million) in 
reimbursable costs for additional capital spent by us up to the closing date of the transaction. Sale of the 
Ozark Pipeline system closed on March 1, 2017.

SOUTHERN LIGHTS PIPELINE
Southern Lights Pipeline is a fully-contracted single stream pipeline that ships diluent from the Manhattan 
Terminal near Chicago, Illinois to three western Canadian delivery facilities, located at the Edmonton and 
Hardisty terminals in Alberta and the Kerrobert terminal in Saskatchewan. This 180,000 bpd 16/18/20-inch 
diameter pipeline was placed into service in 2010. Both the Canadian portion of Southern Lights Pipeline 
(Southern Lights Canada) and the United States portion of Southern Lights Pipeline (Southern Lights US) 
receive tariff revenues under long-term contracts with committed shippers. Tariffs provide for recovery of 
all operating and debt financing costs plus a return on equity (ROE) of 10%. Southern Lights Pipeline has 
assigned 10% of the capacity (18,000 bpd) for shippers to ship uncommitted volumes. 

As part of the Canadian Restructuring Plan, effective September 1, 2015, we transferred all Class B units 
of Southern Lights Canada to the Fund Group. Following the closing of the Transaction, the Fund Group 
holds all the ownership, economic interests and voting rights, direct and indirect, in Southern Lights 
Canada. We continue to indirectly own all of the Class B Units of Southern Lights US.

EXPRESS-PLATTE SYSTEM
The Express-Platte system is comprised of both the Express pipeline and the Platte pipeline, and crude 
oil storage of approximately 5.6 million barrels. It is an approximate 2,736-kilometer (1,700-mile) crude oil 
transportation system, which begins in Hardisty, Alberta, and terminates in Wood River, Illinois. The 
Express pipeline carries crude oil to United States refining markets in the Rockies area, including 
Montana, Wyoming, Colorado and Utah. The Platte pipeline, which interconnects with the Express 
pipeline in Casper, Wyoming, transports crude oil predominantly from the Bakken shale and western 
Canada to refineries in the Midwest. Express pipeline capacity is typically committed under long-term 
take-or-pay contracts with shippers. A small portion of Express pipeline capacity and all of the Platte 
pipeline capacity is used by uncommitted shippers who pay only for the pipeline capacity they actually 
use in a given month.

BAKKEN SYSTEM
Our Bakken assets consist of the North Dakota System and the Bakken Pipeline System. The North 
Dakota System is a joint operation that includes a Canadian entity and a United States entity. The United 
States portion of the North Dakota System is comprised of a crude oil gathering and interstate pipeline 
transportation system servicing the Williston Basin in North Dakota and Montana, which includes the 
Bakken and Three Forks formation. The gathering pipelines collect crude oil from nearly 80 different 
receipt facilities located throughout western North Dakota and eastern Montana, with delivery to 
Clearbrook for service on the Lakehead system or a variety of interconnecting pipeline and rail export 
facilities. The United States interstate portion of the system extends from Berthold, North Dakota to the 
International Boundary near North Portal, North Dakota, and connects to the Canadian entity at the 
border to bring the crude oil into Cromer, Manitoba.

Tariffs on the United States portion of the North Dakota System are governed by FERC and include a 
local tariff. The Canadian portion is categorized as a Group 2 pipeline, and as such its tolls are regulated 
by the NEB on a complaint basis. Tolls are based on long-term take-or-pay agreements with anchor 
shippers. 

In February 2017, we closed a transaction to acquire a 49% equity interest in the holding company that 
owns 75% of the Bakken Pipeline System from an affiliate of Energy Transfer Partners, L.P. and Sunoco 
Logistics Partners, L.P. The Bakken Pipeline System connects the prolific Bakken formation in North 
Dakota to markets in eastern PADD II and the United States Gulf Coast, providing customers with access 
to premium markets at a competitive cost. The Bakken Pipeline System consists of the Dakota Access 

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Pipeline and the Energy Transfer Crude Oil Pipeline projects. The Dakota Access Pipeline consists of 
1,886-kilometers (1,172-miles) of 30-inch pipe from the Bakken/Three Forks production area in North 
Dakota to Patoka, Illinois. Initial capacity is in excess of 470,000 bpd of crude oil with the potential to be 
expanded to 570,000 bpd. The Energy Transfer Crude Oil Pipeline consists of 100-kilometers (62-miles) 
of new 30-inch diameter pipe, 1,104-kilometers (686-miles) of converted 30-inch diameter pipe, and 64-
kilometers (40-miles) of converted 24-inch diameter pipe from Patoka, Illinois to Nederland, Texas. The 
Bakken Pipeline System is anchored by long-term throughput commitments from a number of producers.

FEEDER PIPELINES AND OTHER
Feeder Pipelines and Other includes a number of liquids storage assets and pipeline systems in Canada 
and the United States. 

Key assets included in Feeder Pipelines and Other are the Hardisty Contract Terminal and Hardisty 
Storage Caverns located near Hardisty, Alberta, a key crude oil pipeline hub in western Canada and 
Southern Access Extension (SAX) pipeline which originates out of Flanagan, Illinois and delivers to 
Patoka, Illinois. On July 1, 2014, Marathon executed an agreement with Enbridge to become an owner 
(35%) in SAX forming the Illinois Extension Pipeline Company (IEPC). Enbridge has 65% ownership in 
IEPC. SAX was placed into service December 2015 with the majority of its capacity commercially secured 
under long-term take-or-pay contracts with shippers.

Feeder Pipelines and Other also includes Patoka Storage, the Toledo pipeline system and the NW 
System. Patoka Storage is comprised of 4 storage tanks with 480,000 barrels of shell capacity located in 
Patoka, Illinois. The Toledo pipeline system connects with the Lakehead System and delivers to Ohio and 
Michigan. The majority of Toledo pipeline’s capacity is commercially secured under long-term take-or-pay 
contracts with shippers. The NW System transports crude oil from Norman Wells in the Northwest 
Territories to Zama, Alberta. NW System has a cost of service rate structure based on established terms 
with shippers.

Feeder Pipelines and Other includes contributions from assets which were divested during 2017 and the 
fourth quarter of 2016, including investments in Olympic Pipeline Company (Olympic), Eddystone Rail 
and the South Prairie Region assets.

On October 19, 2017, we sold all assets related to our Eddystone rail facility to our partner Canopy in 
exchange for their 25% share of the joint venture valued at $5 million. These assets primarily included the 
unit-train unloading facility and related local pipeline infrastructure near Philadelphia, Pennsylvania that 
delivered Bakken and other light sweet crude oil to Philadelphia area refineries.

On July 31, 2017, we completed the sale of our 85% interest in Olympic, the largest refined products 
pipeline in the State of Washington, to an unrelated party for $0.2 billion.

On December 1, 2016, EIPLP completed the sale of the South Prairie Region assets to an unrelated party 
for cash proceeds of $1.08 billion. The South Prairie Region assets transport crude oil and NGL from 
producing fields and facilities in southeastern Saskatchewan and southwestern Manitoba to Cromer, 
Manitoba where products enter the mainline system to be transported to the United States or eastern 
Canada.

COMPETITION
Competition may result in a reduction in demand for our services, fewer project opportunities or 
assumption of risk that results in weaker or more volatile financial performance than expected. 
Competition among existing pipelines is based primarily on the cost of transportation, access to supply, 
the quality and reliability of service, contract carrier alternatives and proximity to markets. 

Other competing carriers available to ship western Canadian liquid hydrocarbons to markets in Canada, 
the United States and internationally represent competition to our liquids pipelines network. Competition 

also arises from proposed pipelines that seek to access markets currently served by our liquids pipelines, 

such as proposed projects to the Gulf Coast and from proposed projects enhancing infrastructure in the 

Alberta regional oil sands market. The Mid-Continent and Bakken systems also face competition from 

existing competing pipelines, proposed future pipelines and existing and alternative gathering facilities. 

Competition for storage facilities in the United States includes large integrated oil companies and other 

midstream energy partnerships. Additionally, volatile crude price differentials and insufficient pipeline 

capacity on either our or other competitor pipelines can make transportation of crude oil by rail 

competitive, particularly to markets not currently serviced by pipelines. 

We believe that our liquids pipelines continue to provide attractive options to producers in the Western 

Canadian Sedimentary Basin (WCSB) and North Dakota due to our competitive tolls and flexibility 

through our multiple delivery and storage points. Our current complement of growth projects to expand 

market access and to enhance capacity on our pipeline system combined with our commitment to project 

execution is expected to further provide shippers reliable and long-term competitive solutions for oil 

transportation. Our existing right-of-way for the mainline system also provides a competitive advantage as 

it can be difficult and costly to obtain rights of way for new pipelines traversing new areas. We also 

employ long-term agreements with shippers, which also mitigate competition risk by ensuring consistent 

supply to our liquids pipelines network. 

SUPPLY AND DEMAND

We have an established and successful history of being the largest transporter of crude oil to the United 

States, the world’s largest market. While United States’ demand for Canadian crude oil production will 

support the use of our infrastructure for the foreseeable future, North American and global crude oil 

supply and demand fundamentals are shifting, and we have a role to play in this transition by developing 

long-term transportation options that enable the efficient flow of crude oil from supply regions to end-user 

markets. 

The downturn in crude oil prices which began in 2014 has impacted our liquids pipelines’ customers, who 

responded by reducing their exploration and development spending for 2016 and 2017 in higher cost 

basins. However, the international market for crude oil has continued to see an increase in production 

from the North American shale oil producing basins and increased production from specific Organization 

of Petroleum Exporting Countries (OPEC). The West Texas Intermediate (WTI) crude price has been 

strengthening from US$30 per barrel at the beginning of 2016 as the market has fought to re-balance 

supply and demand. Prices began to recover in response to cuts in OPEC and non-OPEC production and 

have continued to recover through 2017. The WTI crude prices averaged US$51 per barrel for 2017 and 

ended the year above US$60 per barrel. 

Notwithstanding the current price environment, our mainline system has thus far continued to be highly 

utilized and in fact, mainline throughput as measured at the Canada/United States border at Gretna, 

Manitoba saw record throughput of 2.7 million bpd in December 2017. The mainline system continues to 

be subject to apportionment of heavy crude oil, as nominated volumes currently exceed capacity on 

portions of the system. The impact of a low crude oil price environment on the financial performance of 

our liquids pipelines business is expected to be relatively modest given the commercial arrangements 

which underpin many of the pipelines that make up our liquids system and provide a significant measure 

of protection against volume fluctuations. In addition, our mainline system is well positioned to continue to 

provide safe and efficient transportation which will enable western Canadian and Bakken production to 

reach attractive markets in the United States and eastern Canada at a competitive cost relative to other 

alternatives. The fundamentals of oil sands production and low crude oil prices have caused some 

sponsors to reconsider the timing of their upstream oil sands development projects. However, recently 

updated forecasts continue to reflect long-term supply growth from the WCSB, although the projected 

pace of growth is slower than previous forecasts as companies continue to assess the viability of certain 

capital investments in the current price environment and with the ongoing uncertainty related to timing 

and completion of competing pipeline systems.

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Pipeline and the Energy Transfer Crude Oil Pipeline projects. The Dakota Access Pipeline consists of 

1,886-kilometers (1,172-miles) of 30-inch pipe from the Bakken/Three Forks production area in North 

Dakota to Patoka, Illinois. Initial capacity is in excess of 470,000 bpd of crude oil with the potential to be 

expanded to 570,000 bpd. The Energy Transfer Crude Oil Pipeline consists of 100-kilometers (62-miles) 

of new 30-inch diameter pipe, 1,104-kilometers (686-miles) of converted 30-inch diameter pipe, and 64-

kilometers (40-miles) of converted 24-inch diameter pipe from Patoka, Illinois to Nederland, Texas. The 

Bakken Pipeline System is anchored by long-term throughput commitments from a number of producers.

Feeder Pipelines and Other includes a number of liquids storage assets and pipeline systems in Canada 

FEEDER PIPELINES AND OTHER

and the United States. 

Key assets included in Feeder Pipelines and Other are the Hardisty Contract Terminal and Hardisty 

Storage Caverns located near Hardisty, Alberta, a key crude oil pipeline hub in western Canada and 

Southern Access Extension (SAX) pipeline which originates out of Flanagan, Illinois and delivers to 

Patoka, Illinois. On July 1, 2014, Marathon executed an agreement with Enbridge to become an owner 

(35%) in SAX forming the Illinois Extension Pipeline Company (IEPC). Enbridge has 65% ownership in 

IEPC. SAX was placed into service December 2015 with the majority of its capacity commercially secured 

under long-term take-or-pay contracts with shippers.

Feeder Pipelines and Other also includes Patoka Storage, the Toledo pipeline system and the NW 

System. Patoka Storage is comprised of 4 storage tanks with 480,000 barrels of shell capacity located in 

Patoka, Illinois. The Toledo pipeline system connects with the Lakehead System and delivers to Ohio and 

Michigan. The majority of Toledo pipeline’s capacity is commercially secured under long-term take-or-pay 

contracts with shippers. The NW System transports crude oil from Norman Wells in the Northwest 

Territories to Zama, Alberta. NW System has a cost of service rate structure based on established terms 

with shippers.

Feeder Pipelines and Other includes contributions from assets which were divested during 2017 and the 

fourth quarter of 2016, including investments in Olympic Pipeline Company (Olympic), Eddystone Rail 

and the South Prairie Region assets.

On October 19, 2017, we sold all assets related to our Eddystone rail facility to our partner Canopy in 

exchange for their 25% share of the joint venture valued at $5 million. These assets primarily included the 

unit-train unloading facility and related local pipeline infrastructure near Philadelphia, Pennsylvania that 

delivered Bakken and other light sweet crude oil to Philadelphia area refineries.

On July 31, 2017, we completed the sale of our 85% interest in Olympic, the largest refined products 

pipeline in the State of Washington, to an unrelated party for $0.2 billion.

On December 1, 2016, EIPLP completed the sale of the South Prairie Region assets to an unrelated party 

for cash proceeds of $1.08 billion. The South Prairie Region assets transport crude oil and NGL from 

producing fields and facilities in southeastern Saskatchewan and southwestern Manitoba to Cromer, 

Manitoba where products enter the mainline system to be transported to the United States or eastern 

Canada.

COMPETITION

Competition may result in a reduction in demand for our services, fewer project opportunities or 

assumption of risk that results in weaker or more volatile financial performance than expected. 

Competition among existing pipelines is based primarily on the cost of transportation, access to supply, 

the quality and reliability of service, contract carrier alternatives and proximity to markets. 

Other competing carriers available to ship western Canadian liquid hydrocarbons to markets in Canada, 

the United States and internationally represent competition to our liquids pipelines network. Competition 

also arises from proposed pipelines that seek to access markets currently served by our liquids pipelines, 
such as proposed projects to the Gulf Coast and from proposed projects enhancing infrastructure in the 
Alberta regional oil sands market. The Mid-Continent and Bakken systems also face competition from 
existing competing pipelines, proposed future pipelines and existing and alternative gathering facilities. 
Competition for storage facilities in the United States includes large integrated oil companies and other 
midstream energy partnerships. Additionally, volatile crude price differentials and insufficient pipeline 
capacity on either our or other competitor pipelines can make transportation of crude oil by rail 
competitive, particularly to markets not currently serviced by pipelines. 

We believe that our liquids pipelines continue to provide attractive options to producers in the Western 
Canadian Sedimentary Basin (WCSB) and North Dakota due to our competitive tolls and flexibility 
through our multiple delivery and storage points. Our current complement of growth projects to expand 
market access and to enhance capacity on our pipeline system combined with our commitment to project 
execution is expected to further provide shippers reliable and long-term competitive solutions for oil 
transportation. Our existing right-of-way for the mainline system also provides a competitive advantage as 
it can be difficult and costly to obtain rights of way for new pipelines traversing new areas. We also 
employ long-term agreements with shippers, which also mitigate competition risk by ensuring consistent 
supply to our liquids pipelines network. 

SUPPLY AND DEMAND
We have an established and successful history of being the largest transporter of crude oil to the United 
States, the world’s largest market. While United States’ demand for Canadian crude oil production will 
support the use of our infrastructure for the foreseeable future, North American and global crude oil 
supply and demand fundamentals are shifting, and we have a role to play in this transition by developing 
long-term transportation options that enable the efficient flow of crude oil from supply regions to end-user 
markets. 

The downturn in crude oil prices which began in 2014 has impacted our liquids pipelines’ customers, who 
responded by reducing their exploration and development spending for 2016 and 2017 in higher cost 
basins. However, the international market for crude oil has continued to see an increase in production 
from the North American shale oil producing basins and increased production from specific Organization 
of Petroleum Exporting Countries (OPEC). The West Texas Intermediate (WTI) crude price has been 
strengthening from US$30 per barrel at the beginning of 2016 as the market has fought to re-balance 
supply and demand. Prices began to recover in response to cuts in OPEC and non-OPEC production and 
have continued to recover through 2017. The WTI crude prices averaged US$51 per barrel for 2017 and 
ended the year above US$60 per barrel. 

Notwithstanding the current price environment, our mainline system has thus far continued to be highly 
utilized and in fact, mainline throughput as measured at the Canada/United States border at Gretna, 
Manitoba saw record throughput of 2.7 million bpd in December 2017. The mainline system continues to 
be subject to apportionment of heavy crude oil, as nominated volumes currently exceed capacity on 
portions of the system. The impact of a low crude oil price environment on the financial performance of 
our liquids pipelines business is expected to be relatively modest given the commercial arrangements 
which underpin many of the pipelines that make up our liquids system and provide a significant measure 
of protection against volume fluctuations. In addition, our mainline system is well positioned to continue to 
provide safe and efficient transportation which will enable western Canadian and Bakken production to 
reach attractive markets in the United States and eastern Canada at a competitive cost relative to other 
alternatives. The fundamentals of oil sands production and low crude oil prices have caused some 
sponsors to reconsider the timing of their upstream oil sands development projects. However, recently 
updated forecasts continue to reflect long-term supply growth from the WCSB, although the projected 
pace of growth is slower than previous forecasts as companies continue to assess the viability of certain 
capital investments in the current price environment and with the ongoing uncertainty related to timing 
and completion of competing pipeline systems.

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17

 
 
GAS TRANSMISSION & MIDSTREAM

Gas Transmission and Midstream (formerly referred to as Gas Pipelines and Processing) consists of our 

investments in natural gas pipelines and gathering and processing facilities in Canada and the United States, 

including  US  Gas  Transmission,  Canadian  Gas  Transmission  and  Midstream,  Alliance  Pipeline,  US 

Midstream and other assets.

Over the long term, global energy consumption is expected to continue to grow, with the growth in crude 
oil demand primarily driven by emerging economies in regions outside the Organization for Economic 
Cooperation and Development (OECD), mainly India and China. While OECD countries, including 
Canada, the United States and western European nations, will experience population growth, the 
emphasis placed on energy efficiency, conservation and a shift to lower carbon fuels, such as natural gas 
and renewables, is expected to reduce crude oil demand over the long term. Accordingly, there is a 
strategic opportunity for North American producers to grow production to displace foreign imports and 
participate in the growing global demand outside North America. 

In terms of supply, long-term global crude oil production is expected to continue to grow through 2035, 
with growth in supply primarily contributed by North America, Brazil and OPEC. The expected growth in 
North America is largely driven by production from the oil sands and the continued development of tight 
oil plays including the Permian, Bakken and Eagle Ford formations. Growth in supply from OPEC is 
primarily a result of a shift in OPEC’s strategy from ‘balancing supply’ to ‘competing for market share’ in 
Asia and Europe. However, political uncertainty in certain oil producing countries, including Venezuela, 
Libya, Nigeria and Iraq, increases risk in those regions’ supply growth forecasts and makes North 
America one of the most secure supply sources of crude oil. As witnessed throughout 2016 and 2017, 
North American supply growth can be influenced by macro-economic factors that drive down the global 
crude prices. Over the longer term, North American production from tight oil plays, including the Bakken, 
is expected to grow as technology continues to improve well productivity and efficiencies. The WCSB, in 
Canada, is viewed as one of the world’s largest and most secure supply sources of crude oil. However, 
the pace of growth in North America and level of investment in the WCSB could be tempered in future 
years by a number of factors including a sustained period of low crude oil prices and corresponding 
production decisions by OPEC, increasing environmental regulation, and prolonged approval processes 
for new pipelines with access to tide-water for export. 

In recent years, the combination of relatively flat domestic demand, growing supply and long-lead time to 
build pipeline infrastructure led to a fundamental change in the North American crude oil landscape. The 
inability to move increasing inland supply to tide-water markets resulted in a divergence between WTI and 
world pricing, resulting in lower netbacks for North American producers than could otherwise be achieved 
if selling into global markets. The impact of price differentials has been even more pronounced for 
western Canadian producers as insufficient pipeline infrastructure resulted in a further discounting of 
Alberta crude against WTI. With a number of market access initiatives completed by the industry in recent 
years, including those introduced by us, the crude oil price differentials significantly narrowed in 2015, and 
resulted in higher netbacks for producers. The capacity from these initiatives was for the most part 
exhausted by the end of 2017 from growth in the Oil Sands and has resulted in crude differentials 
widening once more. Canadian pipeline export capacity is expected to remain essentially full, resulting in 
incremental production utilizing non-pipeline transportation services until such time as pipeline capacity is 
made available. As the supply in North America continues to grow, the growth and flexibility of pipeline 
infrastructure will need to keep pace with the sensitive demand and supply balance. Over the longer term, 
we believe pipelines will continue to be the most cost-effective means of transportation in markets where 
the differential between North American and global oil prices remain narrow. Utilization of rail to transport 
crude is expected to be substantially limited to those markets not readily accessible by pipelines. 

Our role in helping to address the evolving supply and demand fundamentals and alleviating price 
discounts for producers and supply costs to refiners is to provide expanded pipeline capacity and 
sustainable connectivity to alternative markets. As discussed in Part II. Item 7. Management's Discussion 
and Analysis of Financial Condition and Results of Operations - Growth Projects - Commercially Secured 
Projects, in 2017, we continue to execute our growth projects plan in furtherance of this objective.

18

19

 
Over the long term, global energy consumption is expected to continue to grow, with the growth in crude 

oil demand primarily driven by emerging economies in regions outside the Organization for Economic 

Cooperation and Development (OECD), mainly India and China. While OECD countries, including 

Canada, the United States and western European nations, will experience population growth, the 

emphasis placed on energy efficiency, conservation and a shift to lower carbon fuels, such as natural gas 

and renewables, is expected to reduce crude oil demand over the long term. Accordingly, there is a 

strategic opportunity for North American producers to grow production to displace foreign imports and 

participate in the growing global demand outside North America. 

In terms of supply, long-term global crude oil production is expected to continue to grow through 2035, 

with growth in supply primarily contributed by North America, Brazil and OPEC. The expected growth in 

North America is largely driven by production from the oil sands and the continued development of tight 

oil plays including the Permian, Bakken and Eagle Ford formations. Growth in supply from OPEC is 

primarily a result of a shift in OPEC’s strategy from ‘balancing supply’ to ‘competing for market share’ in 

Asia and Europe. However, political uncertainty in certain oil producing countries, including Venezuela, 

Libya, Nigeria and Iraq, increases risk in those regions’ supply growth forecasts and makes North 

America one of the most secure supply sources of crude oil. As witnessed throughout 2016 and 2017, 

North American supply growth can be influenced by macro-economic factors that drive down the global 

crude prices. Over the longer term, North American production from tight oil plays, including the Bakken, 

is expected to grow as technology continues to improve well productivity and efficiencies. The WCSB, in 

Canada, is viewed as one of the world’s largest and most secure supply sources of crude oil. However, 

the pace of growth in North America and level of investment in the WCSB could be tempered in future 

years by a number of factors including a sustained period of low crude oil prices and corresponding 

production decisions by OPEC, increasing environmental regulation, and prolonged approval processes 

for new pipelines with access to tide-water for export. 

In recent years, the combination of relatively flat domestic demand, growing supply and long-lead time to 

build pipeline infrastructure led to a fundamental change in the North American crude oil landscape. The 

inability to move increasing inland supply to tide-water markets resulted in a divergence between WTI and 

world pricing, resulting in lower netbacks for North American producers than could otherwise be achieved 

if selling into global markets. The impact of price differentials has been even more pronounced for 

western Canadian producers as insufficient pipeline infrastructure resulted in a further discounting of 

Alberta crude against WTI. With a number of market access initiatives completed by the industry in recent 

years, including those introduced by us, the crude oil price differentials significantly narrowed in 2015, and 

resulted in higher netbacks for producers. The capacity from these initiatives was for the most part 

exhausted by the end of 2017 from growth in the Oil Sands and has resulted in crude differentials 

widening once more. Canadian pipeline export capacity is expected to remain essentially full, resulting in 

incremental production utilizing non-pipeline transportation services until such time as pipeline capacity is 

made available. As the supply in North America continues to grow, the growth and flexibility of pipeline 

infrastructure will need to keep pace with the sensitive demand and supply balance. Over the longer term, 

we believe pipelines will continue to be the most cost-effective means of transportation in markets where 

the differential between North American and global oil prices remain narrow. Utilization of rail to transport 

crude is expected to be substantially limited to those markets not readily accessible by pipelines. 

Our role in helping to address the evolving supply and demand fundamentals and alleviating price 

discounts for producers and supply costs to refiners is to provide expanded pipeline capacity and 

sustainable connectivity to alternative markets. As discussed in Part II. Item 7. Management's Discussion 

and Analysis of Financial Condition and Results of Operations - Growth Projects - Commercially Secured 

Projects, in 2017, we continue to execute our growth projects plan in furtherance of this objective.

GAS TRANSMISSION & MIDSTREAM
Gas Transmission and Midstream (formerly referred to as Gas Pipelines and Processing) consists of our 
investments in natural gas pipelines and gathering and processing facilities in Canada and the United States, 
including  US  Gas  Transmission,  Canadian  Gas  Transmission  and  Midstream,  Alliance  Pipeline,  US 
Midstream and other assets.

Zama
Zama

Fort St. John
Fort St. John

Edmonton
Edmonton

Vancouver
Vancouver

Rowatt
Rowatt

Fredericton
Fredericton

Halifax
Halifax

Toronto
Toronto

Boston
Boston

Chatham
Chatham

Leidy
Leidy

Chicago
Chicago

Channahon
Channahon
Flanagan
Flanagan

Oakford
Oakford

Toledo
Toledo

New York
New York

Philadelphia
Philadelphia

Accident
Accident

Steckman
Steckman
Ridge
Ridge

Saltville
Saltville

Nashville
Nashville

Moss Bluff
Moss Bluff

Bobcat
Bobcat

New 
New 
Orleans
Orleans

EganEgan
Port Arthur
Port Arthur

Houston
Houston

Orlando
Orlando

Tampa
Tampa

Natural Gas Transmission Pipelines

Natural Gas Gathering Pipelines

Natural Gas Liquids Pipeline

Gas Storage Facility

NGL Storage

Gas Processing Plants

LNG Facility

Propane Terminals

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19

 
US GAS TRANSMISSION
The majority of assets that comprise US Gas Transmission were acquired through the Merger Transaction 
and consist of natural gas transmission and storage assets that are held primarily through Spectra Energy 
Partners, LP (SEP). US Gas Transmission includes indirect ownership interests in Texas Eastern, 
Algonquin, M&N U.S., East Tennessee Natural Gas, Gulfstream, Sabal Trail, Vector Pipeline L.P. (Vector) 
and certain other gas pipeline and storage assets. The US Gas Transmission business primarily provides 
transmission and storage of natural gas through interstate pipeline systems for customers in various 
regions of the midwestern, northeastern and southern United States.

As a result of the Merger Transaction, Enbridge held a 75% equity interest in SEP, a natural gas and 
crude oil infrastructure master limited partnership. As a result of us converting all of our incentive 
distribution rights (IDRs) and general partner economic interests in SEP into 172.5 million newly issued 
SEP common units, we now hold a 83% equity interest in SEP. Refer to Part II. Item 7. Management's 
Discussion and Analysis of Financial Conditions and Results of Operations - United States Sponsored 
Vehicle Strategy. SEP owns 100% of Texas Eastern Transmission, L.P. (Texas Eastern), 92% of 
Algonquin Gas Transmission, L.L.C. (Algonquin), 100% of East Tennessee Natural Gas, L.L.C. (East 
Tennessee), 100% of Saltville Gas Storage Company L.L.C. (Saltville), 100% of Ozark Gas Gathering, 
L.L.C. and Ozark Gas Transmission, L.L.C., 100% of Big Sandy Pipeline, L.L.C., 100% of Market Hub 
Partners Holding, 100% of Bobcat Gas Storage, 78% of Maritimes & Northeast Pipeline, L.L.C. (M&N 
U.S.), 50% of Southeast Supply Header, L.L.C., 50% of Steckman Ridge, L.P., 50% of Gulfstream Natural 
Gas System, L.L.C. (Gulfstream) and 50% of Sabal Trail Transmission, LLC (Sabal Trail).

The Texas Eastern natural gas transmission system extends approximately 2,735-kilometers (1,700-
miles) from producing fields in the Gulf Coast region of Texas and Louisiana to Ohio, Pennsylvania, New 
Jersey and New York. Texas Eastern's onshore system consists of approximately 14,597-kilometers 
(9,070-miles) of pipeline and associated compressor stations. Texas Eastern is also connected to four 
affiliated storage facilities that are partially or wholly-owned by other entities within the US Gas 
Transmission business.

The Algonquin natural gas transmission system connects with Texas Eastern’s facilities in New Jersey 
and extends approximately 402-kilometers (250-miles) through New Jersey, New York, Connecticut, 
Rhode Island and Massachusetts where it connects to M&N U.S. The system consists of approximately 
1,835-kilometers (1,140-miles) of pipeline with associated compressor stations.

M&N U.S. is an approximately 563-kilometer (350-mile) mainline interstate natural gas transmission 
system, including associated compressor stations, which extends from northeastern Massachusetts to the 
border of Canada near Baileyville, Maine. M&N U.S. is connected to the Canadian portion of the 
Maritimes & Northeast Pipeline system, M&N Canada (see Gas Transmission and Midstream - Canadian 
Gas Transmission and Midstream).

East Tennessee’s natural gas transmission system crosses Texas Eastern’s system at two locations in 
Tennessee and consists of two mainline systems totaling approximately 2,414-kilometers (1,500-miles) of 
pipeline in Tennessee, Georgia, North Carolina and Virginia, with associated compressor stations. East 
Tennessee has a Liquefied Natural Gas (LNG) storage facility in Tennessee and also connects to the 
Saltville storage facilities in Virginia.

Gulfstream is an approximately 1,199-kilometer (745-mile) interstate natural gas transmission system, 
with associated compressor stations, operated jointly by SEP and The Williams Companies, Inc. 
Gulfstream transports natural gas from Mississippi, Alabama, Louisiana and Texas, crossing the Gulf of 
Mexico to markets in central and southern Florida. Gulfstream is accounted for under the equity method 
of accounting.

Sabal Trail provides firm natural gas transportation to Florida Power & Light Company for its power 
generation needs and will deliver to Duke Energy Florida's natural gas plant currently under construction 

in Florida. Facilities include a new 829-kilometer (515-mile) pipeline, laterals and various compressor 

stations. The pipeline infrastructure is located in Alabama, Georgia and Florida, and adds approximately 

1.1 billion cubic feet per day (bcf/d) of new capacity to access onshore shale gas supplies once approved 

future expansions are completed. Sabal Trail is accounted for under the equity method of accounting.

We also hold a 60% ownership interest in Vector, which is a 560-kilometer (348-mile) pipeline that 

transports 1.3 bcf/d of natural gas from Joliet, Illinois in the Chicago area to parts of Indiana, Michigan 

and Ontario. 

Transmission and storage services are generally provided under firm agreements where customers 

reserve capacity in pipelines and storage facilities. The vast majority of these agreements provide for 

fixed reservation charges that are paid monthly regardless of the actual volumes transported on the 

pipelines or injected or withdrawn from our storage facilities, plus a small variable component that is 

based on volumes transported, injected or withdrawn, which is intended to recover variable costs.

Interruptible transmission and storage services are also available where customers can use capacity if it 

exists at the time of the request. Interruptible revenues depend on the amount of volumes transported or 

stored and the associated rates for this service. Storage operations also provide a variety of other value-

added services including natural gas parking, loaning and balancing services to meet customers’ needs.

CANADIAN GAS TRANSMISSION AND MIDSTREAM 

Canadian Gas Transmission and Midstream consists of natural gas pipelines, processing plants and 

gathering systems, located primarily in Western Canada. Upon completion of the Merger Transaction, 

Canadian Gas Transmission and Midstream now includes the Western Canada Transmission & 

Processing businesses, which is comprised of British Columbia Pipeline & Field Services, M&N Canada 

and certain other midstream gas pipelines, gathering, processing and storage assets. 

British Columbia Pipeline and British Columbia Field Services provide fee-based natural gas transmission 

and gas gathering and processing services. British Columbia Pipeline has approximately 2,816-kilometers 

(1,750-miles) of transmission pipeline in British Columbia and Alberta, as well as associated mainline 

compressor stations. The British Columbia Field Services business includes eight gas processing plants 

located in British Columbia, associated field compressor stations and approximately 2,253-kilometers 

(1,400-miles) of gathering pipelines. 

M&N Canada is an approximately 885-kilometer (550-mile) interprovincial natural gas transmission 

mainline system which extends from Goldboro, Nova Scotia to the United States border near Baileyville, 

Maine. M&N Canada is connected to M&N U.S. - refer to Gas Transmission and Midstream - US Gas 

Transmission.

Canadian Gas Transmission and Midstream also includes the wholly-owned Tupper Main and Tupper 

West gas plants (the Tupper Plants) located within the Montney shale play in northeastern British 

Columbia, our 71% interest in the Cabin Gas Plant located 60-kilometers (37-miles) northeast of Fort 

Nelson, British Columbia in the Horn River Basin, as well as interests in the Pipestone and Sexsmith 

gathering systems. We are the operator of the Tupper Plants and the Cabin Gas Plant. We have almost 

100% interest in Pipestone and varying interests (55% to 100%) in Sexsmith and its related sour gas 

gathering, compression and NGL handling facilities, located in the Peace River Arch region of northwest 

Alberta. The primary producer and operator of Pipestone holds a nominal 0.01% interest.

The majority of transportation services provided by Canadian Gas Transmission and Midstream are under 

firm agreements, which provide for fixed reservation charges that are paid monthly regardless of actual 

volumes transported on the pipeline, plus a small variable component that is based on volumes 

transported to recover variable costs. We also provide interruptible transmission services where 

customers can use capacity if it is available at the time of request. Payments under these services are 

based on volumes transported.

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21

US GAS TRANSMISSION

The majority of assets that comprise US Gas Transmission were acquired through the Merger Transaction 

and consist of natural gas transmission and storage assets that are held primarily through Spectra Energy 

Partners, LP (SEP). US Gas Transmission includes indirect ownership interests in Texas Eastern, 

Algonquin, M&N U.S., East Tennessee Natural Gas, Gulfstream, Sabal Trail, Vector Pipeline L.P. (Vector) 

and certain other gas pipeline and storage assets. The US Gas Transmission business primarily provides 

transmission and storage of natural gas through interstate pipeline systems for customers in various 

regions of the midwestern, northeastern and southern United States.

As a result of the Merger Transaction, Enbridge held a 75% equity interest in SEP, a natural gas and 

crude oil infrastructure master limited partnership. As a result of us converting all of our incentive 

distribution rights (IDRs) and general partner economic interests in SEP into 172.5 million newly issued 

SEP common units, we now hold a 83% equity interest in SEP. Refer to Part II. Item 7. Management's 

Discussion and Analysis of Financial Conditions and Results of Operations - United States Sponsored 

Vehicle Strategy. SEP owns 100% of Texas Eastern Transmission, L.P. (Texas Eastern), 92% of 

Algonquin Gas Transmission, L.L.C. (Algonquin), 100% of East Tennessee Natural Gas, L.L.C. (East 

Tennessee), 100% of Saltville Gas Storage Company L.L.C. (Saltville), 100% of Ozark Gas Gathering, 

L.L.C. and Ozark Gas Transmission, L.L.C., 100% of Big Sandy Pipeline, L.L.C., 100% of Market Hub 

Partners Holding, 100% of Bobcat Gas Storage, 78% of Maritimes & Northeast Pipeline, L.L.C. (M&N 

U.S.), 50% of Southeast Supply Header, L.L.C., 50% of Steckman Ridge, L.P., 50% of Gulfstream Natural 

Gas System, L.L.C. (Gulfstream) and 50% of Sabal Trail Transmission, LLC (Sabal Trail).

The Texas Eastern natural gas transmission system extends approximately 2,735-kilometers (1,700-

miles) from producing fields in the Gulf Coast region of Texas and Louisiana to Ohio, Pennsylvania, New 

Jersey and New York. Texas Eastern's onshore system consists of approximately 14,597-kilometers 

(9,070-miles) of pipeline and associated compressor stations. Texas Eastern is also connected to four 

affiliated storage facilities that are partially or wholly-owned by other entities within the US Gas 

Transmission business.

The Algonquin natural gas transmission system connects with Texas Eastern’s facilities in New Jersey 

and extends approximately 402-kilometers (250-miles) through New Jersey, New York, Connecticut, 

Rhode Island and Massachusetts where it connects to M&N U.S. The system consists of approximately 

1,835-kilometers (1,140-miles) of pipeline with associated compressor stations.

M&N U.S. is an approximately 563-kilometer (350-mile) mainline interstate natural gas transmission 

system, including associated compressor stations, which extends from northeastern Massachusetts to the 

border of Canada near Baileyville, Maine. M&N U.S. is connected to the Canadian portion of the 

Maritimes & Northeast Pipeline system, M&N Canada (see Gas Transmission and Midstream - Canadian 

Gas Transmission and Midstream).

East Tennessee’s natural gas transmission system crosses Texas Eastern’s system at two locations in 

Tennessee and consists of two mainline systems totaling approximately 2,414-kilometers (1,500-miles) of 

pipeline in Tennessee, Georgia, North Carolina and Virginia, with associated compressor stations. East 

Tennessee has a Liquefied Natural Gas (LNG) storage facility in Tennessee and also connects to the 

Saltville storage facilities in Virginia.

Gulfstream is an approximately 1,199-kilometer (745-mile) interstate natural gas transmission system, 

with associated compressor stations, operated jointly by SEP and The Williams Companies, Inc. 

Gulfstream transports natural gas from Mississippi, Alabama, Louisiana and Texas, crossing the Gulf of 

Mexico to markets in central and southern Florida. Gulfstream is accounted for under the equity method 

of accounting.

Sabal Trail provides firm natural gas transportation to Florida Power & Light Company for its power 

generation needs and will deliver to Duke Energy Florida's natural gas plant currently under construction 

in Florida. Facilities include a new 829-kilometer (515-mile) pipeline, laterals and various compressor 
stations. The pipeline infrastructure is located in Alabama, Georgia and Florida, and adds approximately 
1.1 billion cubic feet per day (bcf/d) of new capacity to access onshore shale gas supplies once approved 
future expansions are completed. Sabal Trail is accounted for under the equity method of accounting.

We also hold a 60% ownership interest in Vector, which is a 560-kilometer (348-mile) pipeline that 
transports 1.3 bcf/d of natural gas from Joliet, Illinois in the Chicago area to parts of Indiana, Michigan 
and Ontario. 

Transmission and storage services are generally provided under firm agreements where customers 
reserve capacity in pipelines and storage facilities. The vast majority of these agreements provide for 
fixed reservation charges that are paid monthly regardless of the actual volumes transported on the 
pipelines or injected or withdrawn from our storage facilities, plus a small variable component that is 
based on volumes transported, injected or withdrawn, which is intended to recover variable costs.

Interruptible transmission and storage services are also available where customers can use capacity if it 
exists at the time of the request. Interruptible revenues depend on the amount of volumes transported or 
stored and the associated rates for this service. Storage operations also provide a variety of other value-
added services including natural gas parking, loaning and balancing services to meet customers’ needs.

CANADIAN GAS TRANSMISSION AND MIDSTREAM 
Canadian Gas Transmission and Midstream consists of natural gas pipelines, processing plants and 
gathering systems, located primarily in Western Canada. Upon completion of the Merger Transaction, 
Canadian Gas Transmission and Midstream now includes the Western Canada Transmission & 
Processing businesses, which is comprised of British Columbia Pipeline & Field Services, M&N Canada 
and certain other midstream gas pipelines, gathering, processing and storage assets. 

British Columbia Pipeline and British Columbia Field Services provide fee-based natural gas transmission 
and gas gathering and processing services. British Columbia Pipeline has approximately 2,816-kilometers 
(1,750-miles) of transmission pipeline in British Columbia and Alberta, as well as associated mainline 
compressor stations. The British Columbia Field Services business includes eight gas processing plants 
located in British Columbia, associated field compressor stations and approximately 2,253-kilometers 
(1,400-miles) of gathering pipelines. 

M&N Canada is an approximately 885-kilometer (550-mile) interprovincial natural gas transmission 
mainline system which extends from Goldboro, Nova Scotia to the United States border near Baileyville, 
Maine. M&N Canada is connected to M&N U.S. - refer to Gas Transmission and Midstream - US Gas 
Transmission.

Canadian Gas Transmission and Midstream also includes the wholly-owned Tupper Main and Tupper 
West gas plants (the Tupper Plants) located within the Montney shale play in northeastern British 
Columbia, our 71% interest in the Cabin Gas Plant located 60-kilometers (37-miles) northeast of Fort 
Nelson, British Columbia in the Horn River Basin, as well as interests in the Pipestone and Sexsmith 
gathering systems. We are the operator of the Tupper Plants and the Cabin Gas Plant. We have almost 
100% interest in Pipestone and varying interests (55% to 100%) in Sexsmith and its related sour gas 
gathering, compression and NGL handling facilities, located in the Peace River Arch region of northwest 
Alberta. The primary producer and operator of Pipestone holds a nominal 0.01% interest.

The majority of transportation services provided by Canadian Gas Transmission and Midstream are under 
firm agreements, which provide for fixed reservation charges that are paid monthly regardless of actual 
volumes transported on the pipeline, plus a small variable component that is based on volumes 
transported to recover variable costs. We also provide interruptible transmission services where 
customers can use capacity if it is available at the time of request. Payments under these services are 
based on volumes transported.

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ALLIANCE PIPELINE
We have a 50% interest in the Alliance Pipeline, a 3,000-kilometer (1,864-mile) integrated, high-pressure 
natural gas transmission pipeline and approximately 860-kilometers (534-miles) of lateral pipelines and 
related infrastructure. Alliance Pipeline transports liquids-rich natural gas from northeast British Columbia, 
northwest Alberta and the Bakken area in North Dakota to the Alliance Chicago gas exchange hub 
downstream of the Aux Sable NGL extraction and fractionation plant at Channahon, Illinois. The majority 
of transportation services provided by Alliance pipeline are under firm agreements, which provide for fixed 
reservation charges that are paid monthly regardless of actual volumes transported on the pipeline. 
Alliance pipeline also provides interruptible transmission services where customers can use capacity if it 
is available at the time of request. 

US MIDSTREAM 
US Midstream consists of our Midcoast assets, including the Anadarko, East Texas, North Texas and 
Texas Express NGL systems. These assets include natural gas and NGL gathering and transportation 
pipeline systems, natural gas processing and treating facilities, condensate stabilizers and an NGL 
fractionation facility. Midcoast also has rail and liquids marketing operations. During 2017, we acquired all 
of the noncontrolling interests in these assets. For further information, refer to Part II. Item 7. 
Management’s Discussion and Analysis of Financial Condition and Results of Operations - United States 
Sponsored Vehicle Strategy - Acquisition of Midcoast Assets and Privatization of Midcoast Energy 
Partners, L.P.

US Midstream also includes our 42.7% interest in Aux Sable Liquid Products LP and Aux Sable 
Midstream LLC, and a 50% interest in Aux Sable Canada LP (together, Aux Sable). Aux Sable Liquid 
Products LP owns and operates an NGL extraction and fractionation plant at Channahon, Illinois, outside 
Chicago, near the terminus of Alliance Pipeline. Aux Sable also owns facilities upstream of Alliance 
Pipeline that facilitate deliveries of liquids-rich gas volumes into the pipeline for further processing at the 
Aux Sable plant. These facilities include the Palermo Conditioning Plant and the Prairie Rose Pipeline in 
the Bakken area of North Dakota, owned and operated by Aux Sable Midstream US; and Aux Sable 
Canada’s interests in the Montney area of British Columbia, comprising the Septimus Pipeline and the 
Septimus and Wilder Gas Plants.

US Midstream also includes a 50% investment in DCP Midstream, LLC (DCP Midstream), which is 
accounted for as an equity investment. DCP Midstream gathers, compresses, treats, processes, 
transports, stores and sells natural gas. It also produces, fractionates, transports, stores and sells NGLs, 
recovers and sells condensate, and trades and markets natural gas and NGLs.

OTHER 
Other consists primarily of our offshore assets. Enbridge Offshore Pipelines is comprised of 11 active 
natural gas gathering and transmission pipelines and two active oil pipelines, including the Heidelberg Oil 
Pipeline that was placed in service in January 2016. These pipelines are located in four major corridors in 
the Gulf of Mexico, extending to deepwater developments, and include almost 2,100-kilometers (1,300-
miles) of underwater pipe and onshore facilities with total capacity of approximately 6.5 bcf/d.

COMPETITION
Our natural gas transmission and storage businesses compete with similar facilities that serve our supply 
and market areas in the transmission and storage of natural gas. The flow pattern of natural gas is 
changing across North America due to emerging supply sources and evolving demand centers, which 
creates a highly competitive market to secure new growth opportunities. The principal elements of 
competition are location, rates, terms of service, flexibility and reliability of service.

The natural gas transported in our business competes with other forms of energy available to our 
customers and end-users, including electricity, coal, propane, fuel oils, and renewable energy. Factors 
that influence the demand for natural gas include price changes, the availability of natural gas and other 

forms of energy, levels of business activity, long-term economic conditions, conservation, legislation, 

governmental regulations, the ability to convert to alternative fuels, weather and other factors.

Competition in our business exists in all of the markets we serve. Competitors include interstate and 

intrastate pipelines or their affiliates and other midstream businesses that transport, gather, treat, process 

and market natural gas or NGLs. Because pipelines are generally the most efficient mode of 

transportation for natural gas over land, the most significant competitors of our natural gas pipelines are 

other pipeline companies. Pipelines typically compete with each other based on location, capacity, 

reputation, price and reliability.

SUPPLY AND DEMAND 

Global energy demand is expected to increase approximately 30 percent by 2040, according to the 

International Energy Agency, driven primarily by economic growth in non-OECD countries. Natural gas 

will play an important role in meeting this energy demand as gas consumption is anticipated to grow by 

nearly 50 percent during this period as one of the world’s fastest growing energy sources, second only to 

renewables. Globally, most natural gas demand will stem from the need for greater power generation 

capacity, as natural gas is a cleaner alternative to coal, which currently has the largest market share for 

power generation.  

Within North America, United States natural gas demand growth is expected to be driven by the next 

wave of gas-intensive petrochemical facilities which are now starting to enter service, along with power 

generation, an increase in the volume of LNG exports and additional pipeline exports to Mexico. Within 

Canada, natural gas demand growth is expected to be largely tied to oil sands development and growth in 

gas-fired power generation. Canadian gas demand growth will be accelerated with implementation of 

proposed government regulations to replace coal fired power, designed to meet emissions targets.  

North American supply from tight formations continues to create a demand and supply imbalance for 

natural gas and some NGL products. North American gas supply continues to be significantly impacted by 

development in the northeastern United States, primarily the prolific Marcellus and Utica shales in 

Appalachia. The abundance of supply from these shale plays continues to alter natural gas flow patterns 

in North America, as this region has largely displaced flows from the Gulf Coast and WCSB that 

historically supplied eastern markets. Similar pressures are also being felt in the Midwest United States 

and southern markets.

Beyond growing Appalachian production, natural gas supply growth has been largely tied to crude oil and 

NGL production. In the Permian Basin, for example, rapid expansion of crude oil drilling activity has 

increased associated gas supplies from the region by approximately 2.0 bcf/d over the past two years and 

growth is forecasted to continue for the next decade. Similarly, WCSB natural gas production growth has 

been primarily attributable to production of NGLs, which provide strong producer netbacks. However, 

growing local demand from gas-fired power generation and continued oil sands development should 

stabilize WCSB natural gas economics, even as regional exports face steeper competition in Eastern 

Canada and the Midwest United States. 

The continued increase in North American gas production and the resulting surplus supply has limited gas 

price advances, which remained largely within range throughout 2017. In response to low prices, 

producers have introduced new technologies and more efficient drilling and completion techniques to 

maximize production and improve break-even economics on new wells. While domestic gas demand and 

growing North American gas exports provide support for future prices, abundant low cost supplies are 

likely to continue to limit high prices through the next decade.   

Growth in global demand for natural gas will necessitate growing LNG trade to facilitate the movement of 

gas supply from producing regions to consuming regions. North America and the USGC in particular are 

positioned to benefit from this trend as low-cost tight gas production from the Permian, Eagle Ford and 

Appalachia continues to enable growing LNG exports. The United States exported approximately 3.0 bcf/

22

23

 
 
ALLIANCE PIPELINE

We have a 50% interest in the Alliance Pipeline, a 3,000-kilometer (1,864-mile) integrated, high-pressure 

natural gas transmission pipeline and approximately 860-kilometers (534-miles) of lateral pipelines and 

related infrastructure. Alliance Pipeline transports liquids-rich natural gas from northeast British Columbia, 

northwest Alberta and the Bakken area in North Dakota to the Alliance Chicago gas exchange hub 

downstream of the Aux Sable NGL extraction and fractionation plant at Channahon, Illinois. The majority 

of transportation services provided by Alliance pipeline are under firm agreements, which provide for fixed 

reservation charges that are paid monthly regardless of actual volumes transported on the pipeline. 

Alliance pipeline also provides interruptible transmission services where customers can use capacity if it 

is available at the time of request. 

US MIDSTREAM 

US Midstream consists of our Midcoast assets, including the Anadarko, East Texas, North Texas and 

Texas Express NGL systems. These assets include natural gas and NGL gathering and transportation 

pipeline systems, natural gas processing and treating facilities, condensate stabilizers and an NGL 

fractionation facility. Midcoast also has rail and liquids marketing operations. During 2017, we acquired all 

of the noncontrolling interests in these assets. For further information, refer to Part II. Item 7. 

Management’s Discussion and Analysis of Financial Condition and Results of Operations - United States 

Sponsored Vehicle Strategy - Acquisition of Midcoast Assets and Privatization of Midcoast Energy 

Partners, L.P.

US Midstream also includes our 42.7% interest in Aux Sable Liquid Products LP and Aux Sable 

Midstream LLC, and a 50% interest in Aux Sable Canada LP (together, Aux Sable). Aux Sable Liquid 

Products LP owns and operates an NGL extraction and fractionation plant at Channahon, Illinois, outside 

Chicago, near the terminus of Alliance Pipeline. Aux Sable also owns facilities upstream of Alliance 

Pipeline that facilitate deliveries of liquids-rich gas volumes into the pipeline for further processing at the 

Aux Sable plant. These facilities include the Palermo Conditioning Plant and the Prairie Rose Pipeline in 

the Bakken area of North Dakota, owned and operated by Aux Sable Midstream US; and Aux Sable 

Canada’s interests in the Montney area of British Columbia, comprising the Septimus Pipeline and the 

Septimus and Wilder Gas Plants.

US Midstream also includes a 50% investment in DCP Midstream, LLC (DCP Midstream), which is 

accounted for as an equity investment. DCP Midstream gathers, compresses, treats, processes, 

transports, stores and sells natural gas. It also produces, fractionates, transports, stores and sells NGLs, 

recovers and sells condensate, and trades and markets natural gas and NGLs.

OTHER 

Other consists primarily of our offshore assets. Enbridge Offshore Pipelines is comprised of 11 active 

natural gas gathering and transmission pipelines and two active oil pipelines, including the Heidelberg Oil 

Pipeline that was placed in service in January 2016. These pipelines are located in four major corridors in 

the Gulf of Mexico, extending to deepwater developments, and include almost 2,100-kilometers (1,300-

miles) of underwater pipe and onshore facilities with total capacity of approximately 6.5 bcf/d.

COMPETITION

Our natural gas transmission and storage businesses compete with similar facilities that serve our supply 

and market areas in the transmission and storage of natural gas. The flow pattern of natural gas is 

changing across North America due to emerging supply sources and evolving demand centers, which 

creates a highly competitive market to secure new growth opportunities. The principal elements of 

competition are location, rates, terms of service, flexibility and reliability of service.

The natural gas transported in our business competes with other forms of energy available to our 

customers and end-users, including electricity, coal, propane, fuel oils, and renewable energy. Factors 

that influence the demand for natural gas include price changes, the availability of natural gas and other 

forms of energy, levels of business activity, long-term economic conditions, conservation, legislation, 
governmental regulations, the ability to convert to alternative fuels, weather and other factors.

Competition in our business exists in all of the markets we serve. Competitors include interstate and 
intrastate pipelines or their affiliates and other midstream businesses that transport, gather, treat, process 
and market natural gas or NGLs. Because pipelines are generally the most efficient mode of 
transportation for natural gas over land, the most significant competitors of our natural gas pipelines are 
other pipeline companies. Pipelines typically compete with each other based on location, capacity, 
reputation, price and reliability.

SUPPLY AND DEMAND 
Global energy demand is expected to increase approximately 30 percent by 2040, according to the 
International Energy Agency, driven primarily by economic growth in non-OECD countries. Natural gas 
will play an important role in meeting this energy demand as gas consumption is anticipated to grow by 
nearly 50 percent during this period as one of the world’s fastest growing energy sources, second only to 
renewables. Globally, most natural gas demand will stem from the need for greater power generation 
capacity, as natural gas is a cleaner alternative to coal, which currently has the largest market share for 
power generation.  

Within North America, United States natural gas demand growth is expected to be driven by the next 
wave of gas-intensive petrochemical facilities which are now starting to enter service, along with power 
generation, an increase in the volume of LNG exports and additional pipeline exports to Mexico. Within 
Canada, natural gas demand growth is expected to be largely tied to oil sands development and growth in 
gas-fired power generation. Canadian gas demand growth will be accelerated with implementation of 
proposed government regulations to replace coal fired power, designed to meet emissions targets.  

North American supply from tight formations continues to create a demand and supply imbalance for 
natural gas and some NGL products. North American gas supply continues to be significantly impacted by 
development in the northeastern United States, primarily the prolific Marcellus and Utica shales in 
Appalachia. The abundance of supply from these shale plays continues to alter natural gas flow patterns 
in North America, as this region has largely displaced flows from the Gulf Coast and WCSB that 
historically supplied eastern markets. Similar pressures are also being felt in the Midwest United States 
and southern markets.

Beyond growing Appalachian production, natural gas supply growth has been largely tied to crude oil and 
NGL production. In the Permian Basin, for example, rapid expansion of crude oil drilling activity has 
increased associated gas supplies from the region by approximately 2.0 bcf/d over the past two years and 
growth is forecasted to continue for the next decade. Similarly, WCSB natural gas production growth has 
been primarily attributable to production of NGLs, which provide strong producer netbacks. However, 
growing local demand from gas-fired power generation and continued oil sands development should 
stabilize WCSB natural gas economics, even as regional exports face steeper competition in Eastern 
Canada and the Midwest United States. 

The continued increase in North American gas production and the resulting surplus supply has limited gas 
price advances, which remained largely within range throughout 2017. In response to low prices, 
producers have introduced new technologies and more efficient drilling and completion techniques to 
maximize production and improve break-even economics on new wells. While domestic gas demand and 
growing North American gas exports provide support for future prices, abundant low cost supplies are 
likely to continue to limit high prices through the next decade.   

Growth in global demand for natural gas will necessitate growing LNG trade to facilitate the movement of 
gas supply from producing regions to consuming regions. North America and the USGC in particular are 
positioned to benefit from this trend as low-cost tight gas production from the Permian, Eagle Ford and 
Appalachia continues to enable growing LNG exports. The United States exported approximately 3.0 bcf/

22

23

d of natural gas from the United States Gulf Coast at the end of 2017 with export capacity of 
approximately 9.0 bcf/d scheduled to be in service by 2020. While the short term outlook for LNG 
fundamentals points to a continued global oversupply, as the market absorbs the large volumes of new 
supply coming online, forecasts indicate demand will exceed projected LNG supply in the early 2020s as 
growing markets seek to diversify supply sources. In addition to LNG export facilities under construction, 
the United States remains well positioned to serve this next round of global trade expansion. Canada is 
well positioned to provide LNG export facilities, although these facilities are not likely to be in service in 

the near term. 

NGL production growth is increasingly linked to growing associated gas volumes related to the 

development of tight oil plays such as the Permian. NGLs that can be extracted from liquids-rich gas 

streams include ethane, propane, butane and natural gasoline, which are used in a variety of industrial, 

commercial and other applications. Robust gas production has created regional supply imbalances for 

some NGL products and weakened the economics of NGL extraction, although these imbalances 

modestly improved over 2017 as crude prices have rebounded and NGL export capacity has expanded. 

Over the longer term, the growth in NGL demand is expected to be robust, driven largely by incremental 

ethane demand and exports. Ethane is the key feedstock to the United States Gulf Coast petrochemical 

industry, which is among the world’s lowest-cost ethylene producing regions and is currently undergoing 

significant expansion. As this new infrastructure is completed, ethane prices and resulting extraction 

margins are expected to improve, reducing the amount of ethane retained in the gas stream.  

In addition to ethane, the outlook for abundant propane supplies has prompted the development and 

expansion of export facilities for liquefied petroleum gas. Over a few short years, the United States has 

become the world’s largest liquefied petroleum gas exporter, which has helped to reduce the inventory 

overhang and provide support for propane prices. 

In Canada, the WCSB is well situated to capitalize on the evolving NGL fundamentals over the longer 

term as the Montney and Duvernay shale plays contain significant liquids-rich resources at highly 

competitive extraction costs. In response to growing regional NGL supply, several propane export 

solutions are being developed to move WCSB NGLs from Western Canada to global markets.   

Longer term, NGL fundamentals indicate a positive outlook for demand growth and would be further 

supported with a continued recovery in crude oil prices. Consequently, the crude-to-gas price ratio is 

expected to remain well above energy conversion value levels and continue to be supportive of NGL 

extraction over the longer term. 

In response to these evolving natural gas and NGL fundamentals, we believe we are well positioned to 

provide value-added solutions to producers. We are responding to the need for regional infrastructure 

with additional investment in Canadian and United States gas pipeline and midstream facilities.

24

 
 
d of natural gas from the United States Gulf Coast at the end of 2017 with export capacity of 
d of natural gas from the United States Gulf Coast at the end of 2017 with export capacity of 
approximately 9.0 bcf/d scheduled to be in service by 2020. While the short term outlook for LNG 
approximately 9.0 bcf/d scheduled to be in service by 2020. While the short term outlook for LNG 
fundamentals points to a continued global oversupply, as the market absorbs the large volumes of new 
fundamentals points to a continued global oversupply, as the market absorbs the large volumes of new 
supply coming online, forecasts indicate demand will exceed projected LNG supply in the early 2020s as 
supply coming online, forecasts indicate demand will exceed projected LNG supply in the early 2020s as 
growing markets seek to diversify supply sources. In addition to LNG export facilities under construction, 
growing markets seek to diversify supply sources. In addition to LNG export facilities under construction, 
the United States remains well positioned to serve this next round of global trade expansion. Canada is 
the United States remains well positioned to serve this next round of global trade expansion. Canada is 
well positioned to provide LNG export facilities, although these facilities are not likely to be in service in 
well positioned to provide LNG export facilities, although these facilities are not likely to be in service in 
the near term. 
the near term. 

NGL production growth is increasingly linked to growing associated gas volumes related to the 
NGL production growth is increasingly linked to growing associated gas volumes related to the 
development of tight oil plays such as the Permian. NGLs that can be extracted from liquids-rich gas 
development of tight oil plays such as the Permian. NGLs that can be extracted from liquids-rich gas 
streams include ethane, propane, butane and natural gasoline, which are used in a variety of industrial, 
streams include ethane, propane, butane and natural gasoline, which are used in a variety of industrial, 
commercial and other applications. Robust gas production has created regional supply imbalances for 
commercial and other applications. Robust gas production has created regional supply imbalances for 
some NGL products and weakened the economics of NGL extraction, although these imbalances 
some NGL products and weakened the economics of NGL extraction, although these imbalances 
modestly improved over 2017 as crude prices have rebounded and NGL export capacity has expanded. 
modestly improved over 2017 as crude prices have rebounded and NGL export capacity has expanded. 
Over the longer term, the growth in NGL demand is expected to be robust, driven largely by incremental 
Over the longer term, the growth in NGL demand is expected to be robust, driven largely by incremental 
ethane demand and exports. Ethane is the key feedstock to the United States Gulf Coast petrochemical 
ethane demand and exports. Ethane is the key feedstock to the United States Gulf Coast petrochemical 
industry, which is among the world’s lowest-cost ethylene producing regions and is currently undergoing 
industry, which is among the world’s lowest-cost ethylene producing regions and is currently undergoing 
significant expansion. As this new infrastructure is completed, ethane prices and resulting extraction 
significant expansion. As this new infrastructure is completed, ethane prices and resulting extraction 
margins are expected to improve, reducing the amount of ethane retained in the gas stream.  
margins are expected to improve, reducing the amount of ethane retained in the gas stream.  

In addition to ethane, the outlook for abundant propane supplies has prompted the development and 
In addition to ethane, the outlook for abundant propane supplies has prompted the development and 
expansion of export facilities for liquefied petroleum gas. Over a few short years, the United States has 
expansion of export facilities for liquefied petroleum gas. Over a few short years, the United States has 
become the world’s largest liquefied petroleum gas exporter, which has helped to reduce the inventory 
become the world’s largest liquefied petroleum gas exporter, which has helped to reduce the inventory 
overhang and provide support for propane prices. 
overhang and provide support for propane prices. 

In Canada, the WCSB is well situated to capitalize on the evolving NGL fundamentals over the longer 
In Canada, the WCSB is well situated to capitalize on the evolving NGL fundamentals over the longer 
term as the Montney and Duvernay shale plays contain significant liquids-rich resources at highly 
term as the Montney and Duvernay shale plays contain significant liquids-rich resources at highly 
competitive extraction costs. In response to growing regional NGL supply, several propane export 
competitive extraction costs. In response to growing regional NGL supply, several propane export 
solutions are being developed to move WCSB NGLs from Western Canada to global markets.   
solutions are being developed to move WCSB NGLs from Western Canada to global markets.   

Longer term, NGL fundamentals indicate a positive outlook for demand growth and would be further 
supported with a continued recovery in crude oil prices. Consequently, the crude-to-gas price ratio is 
expected to remain well above energy conversion value levels and continue to be supportive of NGL 
extraction over the longer term. 

Longer term, NGL fundamentals indicate a positive outlook for demand growth and would be further 
supported with a continued recovery in crude oil prices. Consequently, the crude-to-gas price ratio is 
expected to remain well above energy conversion value levels and continue to be supportive of NGL 
extraction over the longer term. 

In response to these evolving natural gas and NGL fundamentals, we believe we are well positioned to 
In response to these evolving natural gas and NGL fundamentals, we believe we are well positioned to 
provide value-added solutions to producers. We are responding to the need for regional infrastructure 
provide value-added solutions to producers. We are responding to the need for regional infrastructure 
with additional investment in Canadian and United States gas pipeline and midstream facilities.
with additional investment in Canadian and United States gas pipeline and midstream facilities.

GAS DISTRIBUTION

Gas Distribution consists of our natural gas utility operations, the core of which are Enbridge Gas 

Distribution Inc. (EGD) and Union Gas Limited (Union Gas), which serve residential, commercial and 

industrial customers, primarily located throughout Ontario. This business segment also includes natural 

gas distribution activities in Quebec and New Brunswick and our investment in Noverco Inc (Noverco).

On November 2, 2017, EGD and Union Gas filed an application with the Ontario Energy Board (OEB) to 

amalgamate the two utilities. If approved as filed, the application will provide a 10 year framework for the 

utilities to identify and leverage best practices and implement integrated solutions. A decision is expected 

in the second half of 2018. 

ENBRIDGE GAS DISTRIBUTION

EGD is a rate regulated natural gas distribution utility serving approximately 2.2 million residential, 

commercial and industrial customers in its franchise areas of central and eastern Ontario. In addition, 

EGD currently serves areas in northern New York State through St. Lawrence Gas Company Inc. (St. 

Lawrence Gas). In August 2017, EGD entered into an agreement to sell the issued and outstanding 

shares of St. Lawrence Gas. The transaction is expected to close in 2018, subject to regulatory approval 

and certain pre-closing conditions.

EGD also owns and operates regulated and unregulated natural gas storage facilities in Ontario. The 

utility business is conducted under statutes and municipal bylaws which grant the right to operate in the 

areas served. The utility operations of EGD and St. Lawrence Gas are regulated by the OEB and by the 

New York State Public Service Commission, respectively. 

As at December 31, 2017, EGD owned and operated a network of approximately 39,000-kilometers 

(24,233-miles) of mains for the transportation and distribution of natural gas, as well as the service pipes 

to transfer natural gas from mains to meters on customers' premises.

There are four principal interrelated aspects of the natural gas distribution business in which EGD is 

directly involved: Distribution Service, Gas Supply, Transportation and Storage.

24

24

25

d of natural gas from the United States Gulf Coast at the end of 2017 with export capacity of 

d of natural gas from the United States Gulf Coast at the end of 2017 with export capacity of 

approximately 9.0 bcf/d scheduled to be in service by 2020. While the short term outlook for LNG 

approximately 9.0 bcf/d scheduled to be in service by 2020. While the short term outlook for LNG 

fundamentals points to a continued global oversupply, as the market absorbs the large volumes of new 

fundamentals points to a continued global oversupply, as the market absorbs the large volumes of new 

supply coming online, forecasts indicate demand will exceed projected LNG supply in the early 2020s as 

supply coming online, forecasts indicate demand will exceed projected LNG supply in the early 2020s as 

growing markets seek to diversify supply sources. In addition to LNG export facilities under construction, 

growing markets seek to diversify supply sources. In addition to LNG export facilities under construction, 

the United States remains well positioned to serve this next round of global trade expansion. Canada is 

the United States remains well positioned to serve this next round of global trade expansion. Canada is 

well positioned to provide LNG export facilities, although these facilities are not likely to be in service in 

well positioned to provide LNG export facilities, although these facilities are not likely to be in service in 

the near term. 

the near term. 

NGL production growth is increasingly linked to growing associated gas volumes related to the 

NGL production growth is increasingly linked to growing associated gas volumes related to the 

development of tight oil plays such as the Permian. NGLs that can be extracted from liquids-rich gas 

development of tight oil plays such as the Permian. NGLs that can be extracted from liquids-rich gas 

streams include ethane, propane, butane and natural gasoline, which are used in a variety of industrial, 

streams include ethane, propane, butane and natural gasoline, which are used in a variety of industrial, 

commercial and other applications. Robust gas production has created regional supply imbalances for 

commercial and other applications. Robust gas production has created regional supply imbalances for 

some NGL products and weakened the economics of NGL extraction, although these imbalances 

some NGL products and weakened the economics of NGL extraction, although these imbalances 

modestly improved over 2017 as crude prices have rebounded and NGL export capacity has expanded. 

modestly improved over 2017 as crude prices have rebounded and NGL export capacity has expanded. 

Over the longer term, the growth in NGL demand is expected to be robust, driven largely by incremental 

Over the longer term, the growth in NGL demand is expected to be robust, driven largely by incremental 

ethane demand and exports. Ethane is the key feedstock to the United States Gulf Coast petrochemical 

ethane demand and exports. Ethane is the key feedstock to the United States Gulf Coast petrochemical 

industry, which is among the world’s lowest-cost ethylene producing regions and is currently undergoing 

industry, which is among the world’s lowest-cost ethylene producing regions and is currently undergoing 

significant expansion. As this new infrastructure is completed, ethane prices and resulting extraction 

significant expansion. As this new infrastructure is completed, ethane prices and resulting extraction 

margins are expected to improve, reducing the amount of ethane retained in the gas stream.  

margins are expected to improve, reducing the amount of ethane retained in the gas stream.  

In addition to ethane, the outlook for abundant propane supplies has prompted the development and 

In addition to ethane, the outlook for abundant propane supplies has prompted the development and 

expansion of export facilities for liquefied petroleum gas. Over a few short years, the United States has 

expansion of export facilities for liquefied petroleum gas. Over a few short years, the United States has 

become the world’s largest liquefied petroleum gas exporter, which has helped to reduce the inventory 

become the world’s largest liquefied petroleum gas exporter, which has helped to reduce the inventory 

overhang and provide support for propane prices. 

overhang and provide support for propane prices. 

In Canada, the WCSB is well situated to capitalize on the evolving NGL fundamentals over the longer 

In Canada, the WCSB is well situated to capitalize on the evolving NGL fundamentals over the longer 

term as the Montney and Duvernay shale plays contain significant liquids-rich resources at highly 

term as the Montney and Duvernay shale plays contain significant liquids-rich resources at highly 

competitive extraction costs. In response to growing regional NGL supply, several propane export 

competitive extraction costs. In response to growing regional NGL supply, several propane export 

solutions are being developed to move WCSB NGLs from Western Canada to global markets.   

solutions are being developed to move WCSB NGLs from Western Canada to global markets.   

Longer term, NGL fundamentals indicate a positive outlook for demand growth and would be further 

Longer term, NGL fundamentals indicate a positive outlook for demand growth and would be further 

supported with a continued recovery in crude oil prices. Consequently, the crude-to-gas price ratio is 

supported with a continued recovery in crude oil prices. Consequently, the crude-to-gas price ratio is 

expected to remain well above energy conversion value levels and continue to be supportive of NGL 

expected to remain well above energy conversion value levels and continue to be supportive of NGL 

extraction over the longer term. 

extraction over the longer term. 

In response to these evolving natural gas and NGL fundamentals, we believe we are well positioned to 

In response to these evolving natural gas and NGL fundamentals, we believe we are well positioned to 

provide value-added solutions to producers. We are responding to the need for regional infrastructure 

provide value-added solutions to producers. We are responding to the need for regional infrastructure 

with additional investment in Canadian and United States gas pipeline and midstream facilities.

with additional investment in Canadian and United States gas pipeline and midstream facilities.

GAS DISTRIBUTION
Gas Distribution consists of our natural gas utility operations, the core of which are Enbridge Gas 
Distribution Inc. (EGD) and Union Gas Limited (Union Gas), which serve residential, commercial and 
industrial customers, primarily located throughout Ontario. This business segment also includes natural 
gas distribution activities in Quebec and New Brunswick and our investment in Noverco Inc (Noverco).

On November 2, 2017, EGD and Union Gas filed an application with the Ontario Energy Board (OEB) to 
amalgamate the two utilities. If approved as filed, the application will provide a 10 year framework for the 
utilities to identify and leverage best practices and implement integrated solutions. A decision is expected 
in the second half of 2018. 

ENBRIDGE GAS DISTRIBUTION
EGD is a rate regulated natural gas distribution utility serving approximately 2.2 million residential, 
commercial and industrial customers in its franchise areas of central and eastern Ontario. In addition, 
EGD currently serves areas in northern New York State through St. Lawrence Gas Company Inc. (St. 
Lawrence Gas). In August 2017, EGD entered into an agreement to sell the issued and outstanding 
shares of St. Lawrence Gas. The transaction is expected to close in 2018, subject to regulatory approval 
and certain pre-closing conditions.

EGD also owns and operates regulated and unregulated natural gas storage facilities in Ontario. The 
utility business is conducted under statutes and municipal bylaws which grant the right to operate in the 
areas served. The utility operations of EGD and St. Lawrence Gas are regulated by the OEB and by the 
New York State Public Service Commission, respectively. 

As at December 31, 2017, EGD owned and operated a network of approximately 39,000-kilometers 
(24,233-miles) of mains for the transportation and distribution of natural gas, as well as the service pipes 
to transfer natural gas from mains to meters on customers' premises.

There are four principal interrelated aspects of the natural gas distribution business in which EGD is 
directly involved: Distribution Service, Gas Supply, Transportation and Storage.

24

24

25

TorontoTorontoMontrealMontrealGas Distribution Service TerritoryAffiliated Gas Distribution Territory Distribution Service
EGD's principal source of revenue arises from distribution of natural gas to customers. The services 
provided to residential, commercial and industrial heating customers are primarily on a general service 
basis (without a specific fixed term or fixed price contract). The services provided to larger commercial 
and industrial customers are usually on an annual contract basis under firm or interruptible service 
contracts.

Gas Supply
To acquire the necessary volume of natural gas to serve its customers, EGD maintains a diversified 
natural gas supply portfolio. EGD's system supply natural gas contracts have pricing structures 
responsive to supply and demand conditions in the North American natural gas market. The prices in 
these contracts may be indexed to Alberta, Chicago or New York based prices.

Transportation
EGD relies on its long-term contracts with Union Gas, an affiliated company under common control, for 
transportation of natural gas from the Dawn Hub (Dawn), the largest integrated underground storage 
facility in Canada and one of the largest in North America, located in south-western Ontario, to EGD’s 
major market in the Greater Toronto Area. These contracts effectively provide EGD with access to United 
States sourced natural gas at Dawn. These contracts also provide transportation for natural gas received 
at Dawn via Vector as well as natural gas stored at EGD’s and Union’s storage pools in the Sarnia, 
Ontario area to the market area.

Storage
EGD’s business is highly seasonal as daily market demand for natural gas fluctuates with changes in 
weather, with peak consumption occurring in the winter months. Utilization of storage facilities permits 
EGD to take delivery of natural gas on favorable terms during off peak summer periods for subsequent 
use during the winter heating season. This practice permits EGD to minimize the annual cost of 
transportation of natural gas from its supply basins, assists in reducing its overall cost of natural gas 
supply and adds a measure of security in the event of any short-term interruption of transportation of 
natural gas to EGD's franchise area. 

EGD's principal storage facilities are located in south-western Ontario, near Dawn, and have a total 
working capacity of approximately 10.5 billion cubic feet (Bcf). Approximately 8.5 Bcf of the total working 
capacity is available to EGD for utility operations. EGD also has a storage contract with Union Gas for 2.0 
Bcf of storage capacity.

UNION GAS
Union Gas is a rate regulated natural gas distribution utility now serving approximately 1.5 million 
residential, commercial and industrial customers in its franchise areas of northern, southwestern and 
eastern Ontario. 

Union Gas' regulated and unregulated storage and transmission business offers storage and transmission 
services to customers at Dawn. It offers customers an important link in the movement of natural gas from 
western Canada and United States supply basins to markets in central Canada and the northeastern 
United States. The utility business is conducted under statutes and municipal by laws which grant the 
right to operate in the areas served. The utility operations of Union Gas are regulated by the OEB.

As at December 31, 2017, Union Gas owned and operated a network of approximately 66,000-kilometers 
(41,010-miles) of mains for the transportation and distribution of natural gas, as well as the service pipes 
to transfer natural gas from mains to meters on customers' premises.

Similar to EGD, there are four principal interrelated aspects of the natural gas distribution business in 
which Union Gas is directly involved: Distribution Service, Gas Supply, Transportation and Storage.

Distribution Service

Similar to EGD, Union Gas’ principal source of revenue arises from distribution of natural gas to 

customers. The services provided to residential, small commercial and industrial heating customers are 

primarily on a general service basis (without a specific fixed term or fixed price contract). The services 

provided to larger commercial and industrial customers underpinned by firm or interruptible service 

contracts.

Gas Supply

To acquire the necessary volume of natural gas to serve its customers, Union Gas maintains a diversified 

natural gas supply portfolio. Union Gas' system supply natural gas contracts have pricing structures 

responsive to supply and demand conditions in the North American natural gas market. The prices in 

these contracts may be indexed to Alberta, Michigan and Chicago based prices.

Transportation 

Union Gas’ transmission system consists of approximately 4,900-kilometers (3,045-miles) of high-

pressure pipeline and five mainline compressor stations. Key pipeline interconnects in Canada and the 

United States enabled Union Gas to deliver approximately 774 Bcf of gas through Union Gas’ 

transmission system in 2017. Union Gas’ transmission system also links an extensive network of 

underground storage pools at Dawn to major Canadian and United States markets. There are multiple 

pipelines providing access to Dawn. Customers can purchase both firm and interruptible transportation 

services on the Union Gas system. As the supply of natural gas in areas close to Ontario continues to 

grow, there is an increased demand to access these diverse supplies at Dawn and transport them along 

the Dawn-Parkway pipeline system to markets in Ontario, eastern Canada and the northeastern United 

States. To secure the continued reliable delivery of natural gas and to serve a growing demand for natural 

gas, Union Gas has invested $1.5 billion between 2015 and 2017 to expand the Dawn-Parkway natural 

gas transmission system. This has increased the takeaway capacity from Dawn to approximately 20 

percent or from 6.3 bcf/d in 2014 to more than 7.5 bcf/d in 2017. A substantial amount of Union Gas’ 

transportation revenue is generated by fixed annual demand charges, with the average length of a long-

term contract being approximately 11 years, with the longest remaining contract term being 15 years. 

Storage

Union Gas’ underground natural gas storage facilities have a working capacity of approximately 165 Bcf 

in 25 underground facilities located in depleted gas fields. Union Gas’ storage pools give customers 

access to all Dawn storage capacity and deliverability. Dawn's configuration provides flexibility for 

injections, withdrawals and cycling. Customers can purchase both firm and interruptible storage services 

at Dawn. Dawn offers customers a wide range of market choices and options with easy access to 

upstream and downstream markets. During 2017, Dawn provided storage, balancing, gas loans, 

transport, exchange and peaking services to over 140 counterparties.

A substantial amount of Union Gas’ storage revenue is generated by fixed annual demand charges, with 

the average length of a long-term contract being approximately five years, with the longest remaining 

contract term being 19 years.

NOVERCO

We own an equity interest in Noverco through ownership of 38.9% of its common shares and an 

investment in preferred shares. Noverco is a holding company that owns approximately 71% of Energir 

LP, formerly known as Gaz Metro Limited Partnership, a natural gas distribution company operating in the 

province of Quebec with interests in subsidiary companies operating gas transmission, gas distribution 

and power distribution businesses in the Province of Quebec and the State of Vermont. Noverco also 

holds, directly and indirectly, an investment in our Common Shares.

26

27

Distribution Service

EGD's principal source of revenue arises from distribution of natural gas to customers. The services 

provided to residential, commercial and industrial heating customers are primarily on a general service 

basis (without a specific fixed term or fixed price contract). The services provided to larger commercial 

and industrial customers are usually on an annual contract basis under firm or interruptible service 

contracts.

Gas Supply

To acquire the necessary volume of natural gas to serve its customers, EGD maintains a diversified 

natural gas supply portfolio. EGD's system supply natural gas contracts have pricing structures 

responsive to supply and demand conditions in the North American natural gas market. The prices in 

these contracts may be indexed to Alberta, Chicago or New York based prices.

Transportation

EGD relies on its long-term contracts with Union Gas, an affiliated company under common control, for 

transportation of natural gas from the Dawn Hub (Dawn), the largest integrated underground storage 

facility in Canada and one of the largest in North America, located in south-western Ontario, to EGD’s 

major market in the Greater Toronto Area. These contracts effectively provide EGD with access to United 

States sourced natural gas at Dawn. These contracts also provide transportation for natural gas received 

at Dawn via Vector as well as natural gas stored at EGD’s and Union’s storage pools in the Sarnia, 

Ontario area to the market area.

Storage

EGD’s business is highly seasonal as daily market demand for natural gas fluctuates with changes in 

weather, with peak consumption occurring in the winter months. Utilization of storage facilities permits 

EGD to take delivery of natural gas on favorable terms during off peak summer periods for subsequent 

use during the winter heating season. This practice permits EGD to minimize the annual cost of 

transportation of natural gas from its supply basins, assists in reducing its overall cost of natural gas 

supply and adds a measure of security in the event of any short-term interruption of transportation of 

natural gas to EGD's franchise area. 

EGD's principal storage facilities are located in south-western Ontario, near Dawn, and have a total 

working capacity of approximately 10.5 billion cubic feet (Bcf). Approximately 8.5 Bcf of the total working 

capacity is available to EGD for utility operations. EGD also has a storage contract with Union Gas for 2.0 

Bcf of storage capacity.

UNION GAS

eastern Ontario. 

Union Gas is a rate regulated natural gas distribution utility now serving approximately 1.5 million 

residential, commercial and industrial customers in its franchise areas of northern, southwestern and 

Union Gas' regulated and unregulated storage and transmission business offers storage and transmission 

services to customers at Dawn. It offers customers an important link in the movement of natural gas from 

western Canada and United States supply basins to markets in central Canada and the northeastern 

United States. The utility business is conducted under statutes and municipal by laws which grant the 

right to operate in the areas served. The utility operations of Union Gas are regulated by the OEB.

As at December 31, 2017, Union Gas owned and operated a network of approximately 66,000-kilometers 

(41,010-miles) of mains for the transportation and distribution of natural gas, as well as the service pipes 

to transfer natural gas from mains to meters on customers' premises.

Similar to EGD, there are four principal interrelated aspects of the natural gas distribution business in 

which Union Gas is directly involved: Distribution Service, Gas Supply, Transportation and Storage.

Distribution Service
Similar to EGD, Union Gas’ principal source of revenue arises from distribution of natural gas to 
customers. The services provided to residential, small commercial and industrial heating customers are 
primarily on a general service basis (without a specific fixed term or fixed price contract). The services 
provided to larger commercial and industrial customers underpinned by firm or interruptible service 
contracts.

Gas Supply
To acquire the necessary volume of natural gas to serve its customers, Union Gas maintains a diversified 
natural gas supply portfolio. Union Gas' system supply natural gas contracts have pricing structures 
responsive to supply and demand conditions in the North American natural gas market. The prices in 
these contracts may be indexed to Alberta, Michigan and Chicago based prices.

Transportation 
Union Gas’ transmission system consists of approximately 4,900-kilometers (3,045-miles) of high-
pressure pipeline and five mainline compressor stations. Key pipeline interconnects in Canada and the 
United States enabled Union Gas to deliver approximately 774 Bcf of gas through Union Gas’ 
transmission system in 2017. Union Gas’ transmission system also links an extensive network of 
underground storage pools at Dawn to major Canadian and United States markets. There are multiple 
pipelines providing access to Dawn. Customers can purchase both firm and interruptible transportation 
services on the Union Gas system. As the supply of natural gas in areas close to Ontario continues to 
grow, there is an increased demand to access these diverse supplies at Dawn and transport them along 
the Dawn-Parkway pipeline system to markets in Ontario, eastern Canada and the northeastern United 
States. To secure the continued reliable delivery of natural gas and to serve a growing demand for natural 
gas, Union Gas has invested $1.5 billion between 2015 and 2017 to expand the Dawn-Parkway natural 
gas transmission system. This has increased the takeaway capacity from Dawn to approximately 20 
percent or from 6.3 bcf/d in 2014 to more than 7.5 bcf/d in 2017. A substantial amount of Union Gas’ 
transportation revenue is generated by fixed annual demand charges, with the average length of a long-
term contract being approximately 11 years, with the longest remaining contract term being 15 years. 

Storage
Union Gas’ underground natural gas storage facilities have a working capacity of approximately 165 Bcf 
in 25 underground facilities located in depleted gas fields. Union Gas’ storage pools give customers 
access to all Dawn storage capacity and deliverability. Dawn's configuration provides flexibility for 
injections, withdrawals and cycling. Customers can purchase both firm and interruptible storage services 
at Dawn. Dawn offers customers a wide range of market choices and options with easy access to 
upstream and downstream markets. During 2017, Dawn provided storage, balancing, gas loans, 
transport, exchange and peaking services to over 140 counterparties.

A substantial amount of Union Gas’ storage revenue is generated by fixed annual demand charges, with 
the average length of a long-term contract being approximately five years, with the longest remaining 
contract term being 19 years.

NOVERCO
We own an equity interest in Noverco through ownership of 38.9% of its common shares and an 
investment in preferred shares. Noverco is a holding company that owns approximately 71% of Energir 
LP, formerly known as Gaz Metro Limited Partnership, a natural gas distribution company operating in the 
province of Quebec with interests in subsidiary companies operating gas transmission, gas distribution 
and power distribution businesses in the Province of Quebec and the State of Vermont. Noverco also 
holds, directly and indirectly, an investment in our Common Shares.

26

27

OTHER GAS DISTRIBUTION AND STORAGE
Other Gas Distribution and Storage includes natural gas distribution utility operations in the Provinces of 
New Brunswick and Quebec.

Enbridge Gas New Brunswick Inc. operates the natural gas distribution franchise in the Province of New 
Brunswick, has approximately 11,800 customers and is regulated by the New Brunswick Energy and 
Utilities Board (EUB).

Gazifere is one of two distributors in Quebec serving more than 40,000 residential, commercial, 
institutional and industrial customers. Gazifere is regulated by the Quebec Regie de l’energie.

GREEN POWER & TRANSMISSION

Green Power and Transmission consists of our investments in renewable energy assets and transmission 

facilities. Renewable energy assets consist of wind, solar, geothermal and waste heat recovery facilities 

and are located in Canada primarily in the provinces of Alberta, Ontario and Quebec and in the United 

States primarily in Colorado, Texas, Indiana and West Virginia. We also have assets under development 

located in Europe.

28

29

OTHER GAS DISTRIBUTION AND STORAGE

Other Gas Distribution and Storage includes natural gas distribution utility operations in the Provinces of 

New Brunswick and Quebec.

Enbridge Gas New Brunswick Inc. operates the natural gas distribution franchise in the Province of New 

Brunswick, has approximately 11,800 customers and is regulated by the New Brunswick Energy and 

Utilities Board (EUB).

Gazifere is one of two distributors in Quebec serving more than 40,000 residential, commercial, 

institutional and industrial customers. Gazifere is regulated by the Quebec Regie de l’energie.

GREEN POWER & TRANSMISSION
Green Power and Transmission consists of our investments in renewable energy assets and transmission 
facilities. Renewable energy assets consist of wind, solar, geothermal and waste heat recovery facilities 
and are located in Canada primarily in the provinces of Alberta, Ontario and Quebec and in the United 
States primarily in Colorado, Texas, Indiana and West Virginia. We also have assets under development 
located in Europe.

Irish Sea

North Sea

UNITED 
KINGDOM

London

Brighton
and Hove

English Channel

Amsterdam
THE 
NETHERLANDS

Brussels

Cologne

FRANCE

BELGIUM

GERMANY

Edmonton
Edmonton

Lethbridge
Lethbridge

Great Falls
Great Falls

Boise

Montreal
Montreal

Toronto
Toronto

Chicago
Chicago

Houston
Houston

29

Power Transmission

Renewable Energy

Offshore Wind in Development

28

Green Power and Transmission includes approximately 2,500 MW of net operating renewable and 
alternative energy sources. Of this amount, approximately 930 MW of net power generating capacity 
comes from wind farms located in the provinces of Alberta, Ontario and Quebec and approximately 1,040 
MW of net power generating capacity comes from wind farms located in the states of Colorado, Texas, 
Indiana and West Virginia, including the 249 MW Chapman Ranch Wind Project (Chapman Ranch) in 
Texas, which was placed into service in late October 2017. The vast majority of the power produced from 
these wind farms is sold under long-term power purchase agreements. We also have three solar facilities 
located in Ontario and a solar facility located in Nevada, with 100 MW and 50 MW, respectively, of net 
power generating capacity. Also included in Green Power and Transmission is the Montana-Alberta Tie-
Line, our first power transmission asset, a 300 MW transmission line from Great Falls, Montana to 
Lethbridge, Alberta.

In June 2017, we announced an additional 112 MW of investment in the partnership that holds the 610 
MW Hohe See Offshore Wind Project in Germany, where we have an effective 50% interest. Earlier in 
2016, we announced the acquisition of Chapman Ranch, as well as the acquisition of a 50% interest in a 
French offshore wind development company, Éolien Maritime France SAS. Chapman Ranch was 
subsequently placed into service in late October 2017. In late 2015, we announced acquisitions of the 
103-MW New Creek Wind Project in West Virginia and a 24.9% interest in the 400 MW Rampion Offshore 
Wind Project in the United Kingdom. Including these acquisitions, we have invested over $5 billion in 
renewable power generation and transmission since 2002.

Competition
Our Green Power and Transmission assets operate in the North American and European power markets, 
which are subject to competition and the supply and demand balance for power in the provinces and 
states in which they operate. The renewable energy market sector includes large utilities and small 
independent power producers, which are expected to aggressively compete with us for project 
development opportunities.

Supply and Demand
The power generation and transmission network in North America is expected to undergo significant 
growth over the next 20 years. On the demand side, North American economic growth over the longer 
term is expected to drive growing electricity demand, although continued efficiency gains are expected to 
make the economy less energy-intensive and temper demand growth. On the supply side, impending 
legislation in Canada is expected to accelerate the retirement of aging coal-fired generation plants, 
resulting in a requirement for significant new generation capacity. While coal and nuclear facilities will 
continue to be core components of power generation in North America, gas-fired and renewable energy 
facilities, including biomass, hydro, solar and wind, are expected to be the preferred sources to replace 
coal-fired generation due to their lower carbon intensities. 

North American wind and solar resources fundamentals remain strong. In the United States, there is over 
85 gigawatts (GW) of installed wind power capacity and in Canada over 12 GW of installed wind power 
capacity. Solar resources in southwestern states such as Arizona, California and Nevada are considered 
to be some of the best in the world for large-scale solar plants and the United States currently has over 
35 GW of installed solar photovoltaic capacity. In late 2015, the United States passed legislation 
extending the availability of certain Federal tax incentives which have supported the profitability of wind 
and solar projects. However, expanding renewable energy infrastructure in North America is not without 
challenges. Growing renewable generation capacity is expected to necessitate substantial capital 
investment to upgrade existing transmission systems or, in many cases, build new transmission lines, as 
these high quality wind and solar resources are often found in regions that are not in close proximity to 
markets. In the near-term, uncertainty over the availability of tax or other government incentives in various 
jurisdictions, the ability to secure long-term power purchase agreements through government or investor-
owned power authorities and low market prices of electricity may hinder the pace of future new renewable 
capacity development. However, continued improvement in technology and manufacturing capacity in the 
past few years has reduced capital costs associated with renewable energy infrastructure and has also 

improved yield factors of power generation assets. These positive developments are expected to render 

renewable energy more competitive and support ongoing investment over the long term. 

In Europe, the future outlook for renewable energy, especially from offshore wind in countries with long 

coastlines and densely populated areas, is very positive. According to the European Wind Energy 

Association, by 2030, wind energy capacity in Europe is expected to be 320 GW, including 66 GW of 

offshore capacity. There is also wide public support for carbon reduction targets and broader adoption of 

renewable generation across all governmental levels. Furthermore, governments in Europe are seeking 

to rationalize the contribution of nuclear power to the overall energy mix, which has resulted in an 

increased focus on alternative sources such as large scale offshore wind.

ENERGY SERVICES

The Energy Services businesses in Canada and the United States undertake physical commodity 

marketing activity and logistical services, oversee refinery supply services and manage our volume 

commitments on various pipeline systems.

Energy Services provides energy supply and marketing services to North American refiners, producers 

and other customers. Crude oil and NGL marketing services are provided by Tidal Energy Marketing Inc. 

(Tidal). We transact at many North American market hubs and provides our customers with various 

services, including transportation, storage, supply management, hedging programs and product 

exchanges. Tidal is primarily a physical barrel marketing company focused on capturing value from 

quality, time and location differentials when opportunities arise. To execute these strategies, Energy 

Services may lease storage or rail cars, as well as hold nomination or contractual rights on both third 

party and Enbridge-owned pipelines and storage facilities. Tidal also provides natural gas and power 

marketing services, including marketing natural gas to optimize commitments on certain natural gas 

pipelines. Additionally, Tidal provides natural gas supply, transportation, balancing and storage for third 

parties, leveraging its natural gas marketing expertise and access to transportation capacity.

Competition

Energy Services earnings are generated from arbitrage opportunities which, by their nature, can be 

replicated by other competitors. An increase in market participants entering into similar arbitrage 

transactions could have an impact on our earnings. Our efforts to mitigate competition risk includes 

diversification of our marketing business by trading at the majority of major hubs in North America and 

establishing long-term relationships with clients.

ELIMINATIONS AND OTHER

Eliminations and Other includes operating and administrative costs and foreign exchange costs which are 

not allocated to business segments. Eliminations and Other also includes new business development 

activities and general corporate investments.

INSURANCE

Our operations are subject to many hazards inherent in our industry. Our assets may experience physical 

damage as a result of an accident or natural disaster. These hazards can also cause personal injury and 

loss of life, severe damage to and destruction of property and equipment, pollution or environmental 

damage, and suspension of operations. We maintain a comprehensive insurance program for us, our 

subsidiaries and our affiliates. This program includes insurance coverage in types and amounts and with 

terms and conditions that are generally consistent with coverage customary for our industry.

Although we believe our current coverage is adequate for our purposes, we have in the past had 

occurrences that led to losses exceeding our then-applicable coverage limits, and there is no assurance 

30

31

 
 
Green Power and Transmission includes approximately 2,500 MW of net operating renewable and 

alternative energy sources. Of this amount, approximately 930 MW of net power generating capacity 

comes from wind farms located in the provinces of Alberta, Ontario and Quebec and approximately 1,040 

MW of net power generating capacity comes from wind farms located in the states of Colorado, Texas, 

Indiana and West Virginia, including the 249 MW Chapman Ranch Wind Project (Chapman Ranch) in 

Texas, which was placed into service in late October 2017. The vast majority of the power produced from 

these wind farms is sold under long-term power purchase agreements. We also have three solar facilities 

located in Ontario and a solar facility located in Nevada, with 100 MW and 50 MW, respectively, of net 

power generating capacity. Also included in Green Power and Transmission is the Montana-Alberta Tie-

Line, our first power transmission asset, a 300 MW transmission line from Great Falls, Montana to 

Lethbridge, Alberta.

In June 2017, we announced an additional 112 MW of investment in the partnership that holds the 610 

MW Hohe See Offshore Wind Project in Germany, where we have an effective 50% interest. Earlier in 

2016, we announced the acquisition of Chapman Ranch, as well as the acquisition of a 50% interest in a 

French offshore wind development company, Éolien Maritime France SAS. Chapman Ranch was 

subsequently placed into service in late October 2017. In late 2015, we announced acquisitions of the 

103-MW New Creek Wind Project in West Virginia and a 24.9% interest in the 400 MW Rampion Offshore 

Wind Project in the United Kingdom. Including these acquisitions, we have invested over $5 billion in 

renewable power generation and transmission since 2002.

Competition

Our Green Power and Transmission assets operate in the North American and European power markets, 

which are subject to competition and the supply and demand balance for power in the provinces and 

states in which they operate. The renewable energy market sector includes large utilities and small 

independent power producers, which are expected to aggressively compete with us for project 

development opportunities.

Supply and Demand

The power generation and transmission network in North America is expected to undergo significant 

growth over the next 20 years. On the demand side, North American economic growth over the longer 

term is expected to drive growing electricity demand, although continued efficiency gains are expected to 

make the economy less energy-intensive and temper demand growth. On the supply side, impending 

legislation in Canada is expected to accelerate the retirement of aging coal-fired generation plants, 

resulting in a requirement for significant new generation capacity. While coal and nuclear facilities will 

continue to be core components of power generation in North America, gas-fired and renewable energy 

facilities, including biomass, hydro, solar and wind, are expected to be the preferred sources to replace 

coal-fired generation due to their lower carbon intensities. 

North American wind and solar resources fundamentals remain strong. In the United States, there is over 

85 gigawatts (GW) of installed wind power capacity and in Canada over 12 GW of installed wind power 

capacity. Solar resources in southwestern states such as Arizona, California and Nevada are considered 

to be some of the best in the world for large-scale solar plants and the United States currently has over 

35 GW of installed solar photovoltaic capacity. In late 2015, the United States passed legislation 

extending the availability of certain Federal tax incentives which have supported the profitability of wind 

and solar projects. However, expanding renewable energy infrastructure in North America is not without 

challenges. Growing renewable generation capacity is expected to necessitate substantial capital 

investment to upgrade existing transmission systems or, in many cases, build new transmission lines, as 

these high quality wind and solar resources are often found in regions that are not in close proximity to 

markets. In the near-term, uncertainty over the availability of tax or other government incentives in various 

jurisdictions, the ability to secure long-term power purchase agreements through government or investor-

owned power authorities and low market prices of electricity may hinder the pace of future new renewable 

capacity development. However, continued improvement in technology and manufacturing capacity in the 

past few years has reduced capital costs associated with renewable energy infrastructure and has also 

30

improved yield factors of power generation assets. These positive developments are expected to render 
renewable energy more competitive and support ongoing investment over the long term. 

In Europe, the future outlook for renewable energy, especially from offshore wind in countries with long 
coastlines and densely populated areas, is very positive. According to the European Wind Energy 
Association, by 2030, wind energy capacity in Europe is expected to be 320 GW, including 66 GW of 
offshore capacity. There is also wide public support for carbon reduction targets and broader adoption of 
renewable generation across all governmental levels. Furthermore, governments in Europe are seeking 
to rationalize the contribution of nuclear power to the overall energy mix, which has resulted in an 
increased focus on alternative sources such as large scale offshore wind.

ENERGY SERVICES

The Energy Services businesses in Canada and the United States undertake physical commodity 
marketing activity and logistical services, oversee refinery supply services and manage our volume 
commitments on various pipeline systems.

Energy Services provides energy supply and marketing services to North American refiners, producers 
and other customers. Crude oil and NGL marketing services are provided by Tidal Energy Marketing Inc. 
(Tidal). We transact at many North American market hubs and provides our customers with various 
services, including transportation, storage, supply management, hedging programs and product 
exchanges. Tidal is primarily a physical barrel marketing company focused on capturing value from 
quality, time and location differentials when opportunities arise. To execute these strategies, Energy 
Services may lease storage or rail cars, as well as hold nomination or contractual rights on both third 
party and Enbridge-owned pipelines and storage facilities. Tidal also provides natural gas and power 
marketing services, including marketing natural gas to optimize commitments on certain natural gas 
pipelines. Additionally, Tidal provides natural gas supply, transportation, balancing and storage for third 
parties, leveraging its natural gas marketing expertise and access to transportation capacity.

Competition
Energy Services earnings are generated from arbitrage opportunities which, by their nature, can be 
replicated by other competitors. An increase in market participants entering into similar arbitrage 
transactions could have an impact on our earnings. Our efforts to mitigate competition risk includes 
diversification of our marketing business by trading at the majority of major hubs in North America and 
establishing long-term relationships with clients.

ELIMINATIONS AND OTHER

Eliminations and Other includes operating and administrative costs and foreign exchange costs which are 
not allocated to business segments. Eliminations and Other also includes new business development 
activities and general corporate investments.

INSURANCE

Our operations are subject to many hazards inherent in our industry. Our assets may experience physical 
damage as a result of an accident or natural disaster. These hazards can also cause personal injury and 
loss of life, severe damage to and destruction of property and equipment, pollution or environmental 
damage, and suspension of operations. We maintain a comprehensive insurance program for us, our 
subsidiaries and our affiliates. This program includes insurance coverage in types and amounts and with 
terms and conditions that are generally consistent with coverage customary for our industry.

Although we believe our current coverage is adequate for our purposes, we have in the past had 
occurrences that led to losses exceeding our then-applicable coverage limits, and there is no assurance 
31

 
 
that the same may not happen in the future. In the unlikely event that multiple insurable incidents which in 
aggregate exceed coverage limits occur within the same insurance period, the total insurance coverage 
will be allocated among our entities on an equitable basis based on an insurance allocation agreement 
among us and our subsidiaries.

We are also subject to numerous environmental laws and regulations affecting many aspects of our 

present and future operations, including air emissions, water quality, wastewater discharges, solid waste 

and hazardous waste. These laws and regulations generally require us to obtain and comply with a wide 

variety of environmental licenses, permits, inspections and other approvals. 

OPERATIONAL AND ECONOMIC REGULATION

LIQUIDS PIPELINES
Operational Regulation
Operational regulation risks relate to compliance with applicable operational rules and regulations 
mandated by governments or applicable regulatory authorities, breaches of which could result in fines, 
penalties, operating restrictions and an overall increase in operating and compliance costs. 

Regulatory scrutiny over the integrity of liquids pipeline assets has the potential to increase operating 
costs or limit future projects. Potential regulatory changes could have an impact on our future earnings 
and the cost related to the construction of new projects. We believe operational regulation risk is mitigated 
by active monitoring and consulting on potential regulatory requirement changes with the respective 
regulators or through industry associations. We also develop robust response plans to regulatory changes 
or enforcement actions. While we believe the safe and reliable operation of our assets and adherence to 
existing regulations is the best approach to managing operational regulatory risk, the potential remains for 
regulators to make unilateral decisions that could have a financial impact on us. 

In the United States, our interstate pipeline operations are subject to pipeline safety laws and regulations 
administered by the Pipeline and Hazardous Materials Safety Administration (PHMSA) of the United 
States Department of Transportation (DOT). These laws and regulations require us to comply with a 
significant set of requirements for the design, construction, maintenance and operation of our interstate 
pipelines. These laws and regulations, among other things, include requirements to monitor and maintain 
the integrity of our pipelines. The regulations determine the pressures at which our pipelines can operate.

PHMSA is designing an Integrity Verification Process intended to create standards to verify maximum 
allowable operating pressure, and to improve and expand integrity management processes. Additionally, 
PHMSA will establish standards for storage facilities. There remains uncertainty as to how these 
standards will be implemented, but it is expected that the changes will impose additional costs on new 
pipeline projects as well as on existing operations. In this climate of increasingly stringent regulation, 
pipeline failures or failures to comply with applicable regulations could result in reduction of allowable 
operating pressures as authorized by PHMSA, which would reduce available capacity on our pipelines. 
Should any of these risks materialize, it may have an adverse effect on our operations, earnings, financial 
condition and cash flows.

In Canada, our pipeline operations are subject to pipeline safety regulations overseen by the NEB or 
provincial regulators. Applicable legislation and regulation require us to comply with a significant set of 
requirements for the design, construction, maintenance and operation of our pipelines. Among other 
obligations, this regulatory framework imposes requirements to monitor and maintain the integrity of our 
pipelines. 

As in the United States, several legislative changes addressing pipeline safety in Canada have recently 
come into force. The changes evidence an increased focus on the implementation of management 
systems to address key areas such as emergency management, integrity management, safety, security 
and environmental protection. Other legislative changes have created authority for the NEB to impose 
administrative monetary penalties for non-compliance with the regulatory regime it administers, as well as 
to impose financial requirements for future abandonment and major pipeline releases. 

In particular, in the United States, compliance with major Clean Air Act regulatory programs is likely to 

cause us to incur significant capital expenditures to obtain permits, evaluate off-site impacts of our 

operations, install pollution control equipment, and otherwise assure compliance. Some states in which 

we operate are implementing new emissions limits to comply with 2008 ozone standards regulated under 

the National Ambient Air Quality Standards. In 2015, the ozone standards were lowered even further from 

75 parts per billion (ppb) to 70 ppb, which may require states to implement additional emissions 

regulations. The precise nature of these compliance obligations at each of our facilities has not been 

finally determined and may depend in part on future regulatory changes. In addition, compliance with new 

and emerging environmental regulatory programs is likely to significantly increase our operating costs 

compared to historical levels.

In the United States, climate change action is evolving at state, regional and federal levels. The Supreme 

Court decision in Massachusetts v. EPA in 2007 established that greenhouse gas (GHG) emissions were 

pollutants subject to regulation under the Clean Air Act. Pursuant to federal regulations, we are currently 

subject to an obligation to report our GHG emissions at our largest emitting facilities, but are not generally 

subject to limits on emissions of GHGs, (except to the extent that some GHGs consist of volatile organic 

compounds and nitrous oxides that are subject to emission limits). In addition, a number of provinces and 

states have joined regional GHG initiatives, and a number are developing their own programs that would 

mandate reductions in GHG emissions. Public interest groups and regulatory agencies are increasingly 

focusing on the emission of methane associated with natural gas development and transmission as a 

source of GHG emissions. However, as the key details of future GHG restrictions and compliance 

mechanisms remain undefined, the likely future effects on our business are highly uncertain. 

For its part, Canada has reaffirmed its strong preference for a harmonized approach with that of the 

United States. While federal GHG related regulatory design details remain forthcoming, provincial 

authorities have been actively pursuing related initiatives.

Failure to comply with environmental regulations may result in the imposition of fines, penalties and 

injunctive measures affecting our operating assets. In addition, changes in environmental laws and 

regulations or the enactment of new environmental laws or regulations could result in a material increase 

in our cost of compliance with such laws and regulations. We may not be able to obtain or maintain all 

required environmental regulatory approvals for our operating assets or development projects. If there is 

a delay in obtaining any required environmental regulatory approvals, if we fail to obtain or comply with 

them, or if environmental laws or regulations change or are administered in a more stringent manner, the 

operations of facilities or the development of new facilities could be prevented, delayed or become 

subject to additional costs. We expect that costs we incur to comply with environmental regulations in the 

future will have a significant effect on our earnings and cash flows. 

Due to the speculative outlook regarding any United States federal and state policies, we cannot estimate 

the potential effect of proposed GHG policies on our future consolidated results of operations, financial 

position or cash flows. However, such legislation or regulation could materially increase our operating 

costs, require material capital expenditures or create additional permitting, which could delay proposed 

construction projects. 

Economic Regulation

Our liquids pipelines also face economic regulatory risk. Broadly defined, economic regulation risk is the 

risk that governments or regulatory agencies change or reject proposed or existing commercial 

arrangements including permits and regulatory approvals for new projects. The Canadian Mainline, 

Lakehead System and other liquids pipelines are subject to the actions of various regulators, including the 

32

33

that the same may not happen in the future. In the unlikely event that multiple insurable incidents which in 

aggregate exceed coverage limits occur within the same insurance period, the total insurance coverage 

will be allocated among our entities on an equitable basis based on an insurance allocation agreement 

among us and our subsidiaries.

We are also subject to numerous environmental laws and regulations affecting many aspects of our 
present and future operations, including air emissions, water quality, wastewater discharges, solid waste 
and hazardous waste. These laws and regulations generally require us to obtain and comply with a wide 
variety of environmental licenses, permits, inspections and other approvals. 

OPERATIONAL AND ECONOMIC REGULATION

LIQUIDS PIPELINES

Operational Regulation

Operational regulation risks relate to compliance with applicable operational rules and regulations 

mandated by governments or applicable regulatory authorities, breaches of which could result in fines, 

penalties, operating restrictions and an overall increase in operating and compliance costs. 

Regulatory scrutiny over the integrity of liquids pipeline assets has the potential to increase operating 

costs or limit future projects. Potential regulatory changes could have an impact on our future earnings 

and the cost related to the construction of new projects. We believe operational regulation risk is mitigated 

by active monitoring and consulting on potential regulatory requirement changes with the respective 

regulators or through industry associations. We also develop robust response plans to regulatory changes 

or enforcement actions. While we believe the safe and reliable operation of our assets and adherence to 

existing regulations is the best approach to managing operational regulatory risk, the potential remains for 

regulators to make unilateral decisions that could have a financial impact on us. 

In the United States, our interstate pipeline operations are subject to pipeline safety laws and regulations 

administered by the Pipeline and Hazardous Materials Safety Administration (PHMSA) of the United 

States Department of Transportation (DOT). These laws and regulations require us to comply with a 

significant set of requirements for the design, construction, maintenance and operation of our interstate 

pipelines. These laws and regulations, among other things, include requirements to monitor and maintain 

the integrity of our pipelines. The regulations determine the pressures at which our pipelines can operate.

PHMSA is designing an Integrity Verification Process intended to create standards to verify maximum 

allowable operating pressure, and to improve and expand integrity management processes. Additionally, 

PHMSA will establish standards for storage facilities. There remains uncertainty as to how these 

standards will be implemented, but it is expected that the changes will impose additional costs on new 

pipeline projects as well as on existing operations. In this climate of increasingly stringent regulation, 

pipeline failures or failures to comply with applicable regulations could result in reduction of allowable 

operating pressures as authorized by PHMSA, which would reduce available capacity on our pipelines. 

Should any of these risks materialize, it may have an adverse effect on our operations, earnings, financial 

condition and cash flows.

In Canada, our pipeline operations are subject to pipeline safety regulations overseen by the NEB or 

provincial regulators. Applicable legislation and regulation require us to comply with a significant set of 

requirements for the design, construction, maintenance and operation of our pipelines. Among other 

obligations, this regulatory framework imposes requirements to monitor and maintain the integrity of our 

pipelines. 

As in the United States, several legislative changes addressing pipeline safety in Canada have recently 

come into force. The changes evidence an increased focus on the implementation of management 

systems to address key areas such as emergency management, integrity management, safety, security 

and environmental protection. Other legislative changes have created authority for the NEB to impose 

administrative monetary penalties for non-compliance with the regulatory regime it administers, as well as 

to impose financial requirements for future abandonment and major pipeline releases. 

In particular, in the United States, compliance with major Clean Air Act regulatory programs is likely to 
cause us to incur significant capital expenditures to obtain permits, evaluate off-site impacts of our 
operations, install pollution control equipment, and otherwise assure compliance. Some states in which 
we operate are implementing new emissions limits to comply with 2008 ozone standards regulated under 
the National Ambient Air Quality Standards. In 2015, the ozone standards were lowered even further from 
75 parts per billion (ppb) to 70 ppb, which may require states to implement additional emissions 
regulations. The precise nature of these compliance obligations at each of our facilities has not been 
finally determined and may depend in part on future regulatory changes. In addition, compliance with new 
and emerging environmental regulatory programs is likely to significantly increase our operating costs 
compared to historical levels.

In the United States, climate change action is evolving at state, regional and federal levels. The Supreme 
Court decision in Massachusetts v. EPA in 2007 established that greenhouse gas (GHG) emissions were 
pollutants subject to regulation under the Clean Air Act. Pursuant to federal regulations, we are currently 
subject to an obligation to report our GHG emissions at our largest emitting facilities, but are not generally 
subject to limits on emissions of GHGs, (except to the extent that some GHGs consist of volatile organic 
compounds and nitrous oxides that are subject to emission limits). In addition, a number of provinces and 
states have joined regional GHG initiatives, and a number are developing their own programs that would 
mandate reductions in GHG emissions. Public interest groups and regulatory agencies are increasingly 
focusing on the emission of methane associated with natural gas development and transmission as a 
source of GHG emissions. However, as the key details of future GHG restrictions and compliance 
mechanisms remain undefined, the likely future effects on our business are highly uncertain. 

For its part, Canada has reaffirmed its strong preference for a harmonized approach with that of the 
United States. While federal GHG related regulatory design details remain forthcoming, provincial 
authorities have been actively pursuing related initiatives.

Failure to comply with environmental regulations may result in the imposition of fines, penalties and 
injunctive measures affecting our operating assets. In addition, changes in environmental laws and 
regulations or the enactment of new environmental laws or regulations could result in a material increase 
in our cost of compliance with such laws and regulations. We may not be able to obtain or maintain all 
required environmental regulatory approvals for our operating assets or development projects. If there is 
a delay in obtaining any required environmental regulatory approvals, if we fail to obtain or comply with 
them, or if environmental laws or regulations change or are administered in a more stringent manner, the 
operations of facilities or the development of new facilities could be prevented, delayed or become 
subject to additional costs. We expect that costs we incur to comply with environmental regulations in the 
future will have a significant effect on our earnings and cash flows. 

Due to the speculative outlook regarding any United States federal and state policies, we cannot estimate 
the potential effect of proposed GHG policies on our future consolidated results of operations, financial 
position or cash flows. However, such legislation or regulation could materially increase our operating 
costs, require material capital expenditures or create additional permitting, which could delay proposed 
construction projects. 

Economic Regulation
Our liquids pipelines also face economic regulatory risk. Broadly defined, economic regulation risk is the 
risk that governments or regulatory agencies change or reject proposed or existing commercial 
arrangements including permits and regulatory approvals for new projects. The Canadian Mainline, 
Lakehead System and other liquids pipelines are subject to the actions of various regulators, including the 

32

33

NEB and FERC, with respect to the tariffs and tolls of those operations. The changing or rejecting of 
commercial arrangements, including decisions by regulators on the applicable tariff structure or changes 
in interpretations of existing regulations by courts or regulators, could have an adverse effect on our 
revenues and earnings. Delays in regulatory approvals on projects such as our L3R Program, could result 
in cost escalations and construction delays, which also negatively impact our operations. 

We believe that economic regulatory risk is reduced through the negotiation of long-term agreements with 
shippers that govern the majority of our liquids pipeline assets. We also involve our legal and regulatory 
teams in the review of new projects to ensure compliance with applicable regulations as well as in the 
establishment of tariffs and tolls on new and existing pipelines. However, despite our efforts to mitigate 
economic regulation risk, there remains a risk that a regulator could overturn long-term agreements that 
we have entered into with shippers or deny the approval and permits for new projects. 

GAS TRANSMISSION & MIDSTREAM
Operational Regulation
The span of regulatory risks that apply to the Liquids Pipeline business as described above under Liquids 
Pipelines also applies to the Gas Transmission and Midstream business. Additionally, most of our United 
States gas transmission operations are regulated by the FERC. The FERC regulates natural gas 
transmission in United States interstate commerce including the establishment of rates for services. The 
FERC also regulates the construction of United States interstate natural gas pipelines and storage 
facilities, including the extension, enlargement and abandonment of facilities. In addition, certain 
operations are subject to oversight by state regulatory commissions. To the extent that the natural gas 
intrastate pipelines that transport or store natural gas in interstate commerce provide services under 
Section 311 of the Natural Gas Policy Act of 1978, they are subject to FERC regulations. The FERC may 
propose and implement new rules and regulations affecting interstate natural gas transmission and 
storage companies, which remain subject to the FERC’s jurisdiction. These initiatives may also affect 
certain transmission of gas by intrastate pipelines.

Our SEP and DCP Midstream operations are subject to the jurisdiction of the Environmental Protection 
Agency and various other federal, state and local environmental agencies. Our United States interstate 
natural gas pipelines and certain of DCP Midstream’s gathering and transmission pipelines are also 
subject to the regulations of the DOT concerning pipeline safety.

The intrastate natural gas and NGL pipelines owned by us and DCP Midstream are subject to state 
regulation. The natural gas gathering and processing activities of DCP Midstream are not subject to 
FERC regulation.

Our Canadian operations are governed by various federal and provincial agencies with respect to pipeline 
safety, including the NEB and the Transportation Safety Board, the British Columbia Oil and Gas 
Commission, the Alberta Energy Regulator and the Ontario Technical Standards and Safety Authority.

Our Canadian natural gas transmission and distribution operations and approximately two-thirds of the 
storage operations in Canada are subject to regulation by the NEB or the provincial agencies in Canada, 
such as the OEB. These agencies have jurisdiction similar to the FERC for regulating rates, the terms and 
conditions of service, the construction of additional facilities and acquisitions. Our British Columbia 
Pipeline and British Columbia Field Services business in western Canada is regulated by the NEB 
pursuant to a framework for light-handed regulation under which the NEB acts on a complaints-basis for 
rates associated with that business. Similarly, the rates charged by our Canadian Gas Transmission and 
Midstream operations for gathering and processing services in western Canada are regulated on a 
complaints-basis by applicable provincial regulators.

GAS DISTRIBUTION

Economic Regulation

Our gas distribution utility operations are regulated by the OEB and the EUB among others. Regulators’ 

future actions may differ from current expectations, or future legislative changes may impact the 

regulatory environments in which we operate. To the extent that the regulators’ future actions are different 

from current expectations, the timing and amount of recovery or refund of amounts recorded on the 

Consolidated Statements of Financial Position, or that would have been recorded on the Consolidated 

Statements of Financial Position in absence of the effects of regulation, could be different from the 

amounts that are eventually recovered or refunded.

We seek to mitigate economic regulation risk. We retain dedicated professional staff and maintain strong 

relationships with customers, intervenors and regulators. The terms of rate negotiations are reviewed by 

our legal, regulatory and finance teams.

Enbridge Gas Distribution

Distribution rates are set under a five-year customized incentive rate plan (IR Plan) approved in 2014 and 

provide a level of stability by having a long-term agreement with the OEB which allows us to recover our 

expected capital investments under the agreement, as well as an opportunity to earn above the OEB 

allowed ROE. Under the customized IR Plan, we are permitted to recover, with OEB approval, certain 

costs that were beyond management control, but that were necessary for the maintenance of our 

services. The customized IR Plan also includes a mechanism to reassess the customized IR Plan and 

return to cost of service if there are significant and unanticipated developments that threaten the 

sustainability of the customized IR Plan.

Union Gas

Distribution rates, beginning in 2014, are set under a five-year incentive regulation framework using price 

cap methodology. The price cap framework establishes new rates at the beginning of each year through 

the use of a pricing formula rather than through the examination of revenue and cost forecasts. The 

framework allows for annual inflationary rate increases, offset by a productivity factor, as well as rate 

increases or decreases in the small volume customer classes where use declines or increases, and 

certain adjustments to base rates. Further, it allows for the continued pass-through of gas commodity, 

upstream transportation and demand side management costs, the additional pass-through of costs 

associated with major capital investments and certain fuel variances, an allowance for unexpected cost 

changes that are outside of management’s control, and equal sharing of tax changes between Union Gas 

and customers, and finally an opportunity to earn above the OEB allowed ROE.

Environmental Regulation

Our workers, operations and facilities are subject to municipal, provincial and federal legislation which 

regulate the protection of the environment and the health and safety of workers. For the environment, 

primarily this includes the regulation of discharges to air, land and water; the management and disposal of 

solid and hazardous waste, and contaminated soil and groundwater; and the assessment of 

contaminated sites.

The operation of our gas distribution system and gas facilities comes with risk of incidents, abnormal 

operating conditions or other unplanned events that could result in spills or emissions to the environment 

that could exceed permitted levels. These events could result in injuries to workers or the public, fines, 

penalties, adverse impacts to the environment in which we operate within, and/or property damage. We 

could also incur future liability for environmental (soil and groundwater) contamination associated with 

past and present site activities.

In addition to the operation of the gas distribution system, we also operate unregulated operations 

including small oil and brine production and storage facilities in southwestern Ontario. Environmental risk 

associated with these facilities is the possibility of spills, releases or leaks. In the event of an incident 

(spill), remediation of the affected area would be required. There would also be potential for fines, orders 

34

35

NEB and FERC, with respect to the tariffs and tolls of those operations. The changing or rejecting of 

commercial arrangements, including decisions by regulators on the applicable tariff structure or changes 

in interpretations of existing regulations by courts or regulators, could have an adverse effect on our 

revenues and earnings. Delays in regulatory approvals on projects such as our L3R Program, could result 

in cost escalations and construction delays, which also negatively impact our operations. 

We believe that economic regulatory risk is reduced through the negotiation of long-term agreements with 

shippers that govern the majority of our liquids pipeline assets. We also involve our legal and regulatory 

teams in the review of new projects to ensure compliance with applicable regulations as well as in the 

establishment of tariffs and tolls on new and existing pipelines. However, despite our efforts to mitigate 

economic regulation risk, there remains a risk that a regulator could overturn long-term agreements that 

we have entered into with shippers or deny the approval and permits for new projects. 

GAS TRANSMISSION & MIDSTREAM

Operational Regulation

The span of regulatory risks that apply to the Liquids Pipeline business as described above under Liquids 

Pipelines also applies to the Gas Transmission and Midstream business. Additionally, most of our United 

States gas transmission operations are regulated by the FERC. The FERC regulates natural gas 

transmission in United States interstate commerce including the establishment of rates for services. The 

FERC also regulates the construction of United States interstate natural gas pipelines and storage 

facilities, including the extension, enlargement and abandonment of facilities. In addition, certain 

operations are subject to oversight by state regulatory commissions. To the extent that the natural gas 

intrastate pipelines that transport or store natural gas in interstate commerce provide services under 

Section 311 of the Natural Gas Policy Act of 1978, they are subject to FERC regulations. The FERC may 

propose and implement new rules and regulations affecting interstate natural gas transmission and 

storage companies, which remain subject to the FERC’s jurisdiction. These initiatives may also affect 

certain transmission of gas by intrastate pipelines.

Our SEP and DCP Midstream operations are subject to the jurisdiction of the Environmental Protection 

Agency and various other federal, state and local environmental agencies. Our United States interstate 

natural gas pipelines and certain of DCP Midstream’s gathering and transmission pipelines are also 

subject to the regulations of the DOT concerning pipeline safety.

The intrastate natural gas and NGL pipelines owned by us and DCP Midstream are subject to state 

regulation. The natural gas gathering and processing activities of DCP Midstream are not subject to 

FERC regulation.

Our Canadian operations are governed by various federal and provincial agencies with respect to pipeline 

safety, including the NEB and the Transportation Safety Board, the British Columbia Oil and Gas 

Commission, the Alberta Energy Regulator and the Ontario Technical Standards and Safety Authority.

Our Canadian natural gas transmission and distribution operations and approximately two-thirds of the 

storage operations in Canada are subject to regulation by the NEB or the provincial agencies in Canada, 

such as the OEB. These agencies have jurisdiction similar to the FERC for regulating rates, the terms and 

conditions of service, the construction of additional facilities and acquisitions. Our British Columbia 

Pipeline and British Columbia Field Services business in western Canada is regulated by the NEB 

pursuant to a framework for light-handed regulation under which the NEB acts on a complaints-basis for 

rates associated with that business. Similarly, the rates charged by our Canadian Gas Transmission and 

Midstream operations for gathering and processing services in western Canada are regulated on a 

complaints-basis by applicable provincial regulators.

GAS DISTRIBUTION
Economic Regulation
Our gas distribution utility operations are regulated by the OEB and the EUB among others. Regulators’ 
future actions may differ from current expectations, or future legislative changes may impact the 
regulatory environments in which we operate. To the extent that the regulators’ future actions are different 
from current expectations, the timing and amount of recovery or refund of amounts recorded on the 
Consolidated Statements of Financial Position, or that would have been recorded on the Consolidated 
Statements of Financial Position in absence of the effects of regulation, could be different from the 
amounts that are eventually recovered or refunded.

We seek to mitigate economic regulation risk. We retain dedicated professional staff and maintain strong 
relationships with customers, intervenors and regulators. The terms of rate negotiations are reviewed by 
our legal, regulatory and finance teams.

Enbridge Gas Distribution
Distribution rates are set under a five-year customized incentive rate plan (IR Plan) approved in 2014 and 
provide a level of stability by having a long-term agreement with the OEB which allows us to recover our 
expected capital investments under the agreement, as well as an opportunity to earn above the OEB 
allowed ROE. Under the customized IR Plan, we are permitted to recover, with OEB approval, certain 
costs that were beyond management control, but that were necessary for the maintenance of our 
services. The customized IR Plan also includes a mechanism to reassess the customized IR Plan and 
return to cost of service if there are significant and unanticipated developments that threaten the 
sustainability of the customized IR Plan.

Union Gas
Distribution rates, beginning in 2014, are set under a five-year incentive regulation framework using price 
cap methodology. The price cap framework establishes new rates at the beginning of each year through 
the use of a pricing formula rather than through the examination of revenue and cost forecasts. The 
framework allows for annual inflationary rate increases, offset by a productivity factor, as well as rate 
increases or decreases in the small volume customer classes where use declines or increases, and 
certain adjustments to base rates. Further, it allows for the continued pass-through of gas commodity, 
upstream transportation and demand side management costs, the additional pass-through of costs 
associated with major capital investments and certain fuel variances, an allowance for unexpected cost 
changes that are outside of management’s control, and equal sharing of tax changes between Union Gas 
and customers, and finally an opportunity to earn above the OEB allowed ROE.

Environmental Regulation
Our workers, operations and facilities are subject to municipal, provincial and federal legislation which 
regulate the protection of the environment and the health and safety of workers. For the environment, 
primarily this includes the regulation of discharges to air, land and water; the management and disposal of 
solid and hazardous waste, and contaminated soil and groundwater; and the assessment of 
contaminated sites.

The operation of our gas distribution system and gas facilities comes with risk of incidents, abnormal 
operating conditions or other unplanned events that could result in spills or emissions to the environment 
that could exceed permitted levels. These events could result in injuries to workers or the public, fines, 
penalties, adverse impacts to the environment in which we operate within, and/or property damage. We 
could also incur future liability for environmental (soil and groundwater) contamination associated with 
past and present site activities.

In addition to the operation of the gas distribution system, we also operate unregulated operations 
including small oil and brine production and storage facilities in southwestern Ontario. Environmental risk 
associated with these facilities is the possibility of spills, releases or leaks. In the event of an incident 
(spill), remediation of the affected area would be required. There would also be potential for fines, orders 

34

35

or charges under environmental legislation, and potential third-party liability claims by affected land 
owners.

EMPLOYEES

The gas distribution system and our other operations must maintain a number of environmental approvals 
and permits from governmental authorities to operate. As a result, these facilities and the distribution 
network are subject to periodic inspection. An Annual Written Summary Report is submitted to the Ontario 
Ministry of Environment and Climate Change (MOECC) to demonstrate we are in good standing in 
relation to its Environmental Compliance Approvals. Failure to maintain regulatory compliance could 
result in operational interruptions, fines, penalties, and/or orders for additional pollution control technology 
or environmental remediation, etc. As environmental requirements and regulations become more 
stringent, the cost to maintain compliance and the time required to obtain approvals has consistently 
increased.

Ontario commenced a cap and trade system on January 1, 2017. Under the cap and trade regulation, 
EGD and Union Gas (together, the Utilities) are required to purchase emission allowances or credits for 
most of our customers’ use of natural gas as well as for emissions from our own operations. This process 
is complex and requires ongoing monitoring of the carbon market and related climate change and carbon 
policies not only in Ontario but also in other newly linked jurisdictions as at January 1, 2018 - namely 
California and Quebec. This linkage which has been enabled in Ontario with various GHG reporting and 
cap and trade regulation amendments over the course of 2017 will create a larger and more liquid market 
for carbon allowances and credits, which may help to keep compliance costs for our customers down. 
However, non-compliance or unexpected policy changes may cause significant changes to the cost of 
maintaining compliance and needs to be closely monitored to ensure impacts are understood.

As required by the OEB Cap and Trade Framework, the Utilities each submitted 2017 Compliance Plans, 
which subsequently received supportive endorsement and approval of cost recovery in 2017 rates. The 
Utilities are in the process of defending their individually filed 2018 Compliance Plans. The OEB approved 
use of the 2017 final rate for recovery of 2018 cap and trade compliance costs until determined otherwise. 
Further, the OEB Cap and Trade Framework identifies that the Utilities are expected to file 2019/2020 
Compliance Plans as well as an Annual Report summarizing 2017 results by August 1, 2018. The 
Compliance Plans detail how the Utilities will meet their respective carbon compliance obligations through 
carbon allowance and/or offset procurement as well as through customer and facility abatement projects 
that may be deemed cost effective. By creating prudent and thoughtful plans and executing with 
excellence, the Utilities can best mitigate the risk of cost disallowance. 

As with previous years, in 2017 the Utilities each reported GHG emissions to the Ontario MOECC, 
Environment and Climate Change Canada, and a number of voluntary reporting programs. Emissions 
from Ontario combustion sources were verified in detail by a third party accredited verifier with no material 
discrepancies found. Additionally, operational emissions from venting, fugitive and natural gas distribution 
emissions were reported to the MOECC for the first time in 2017 in accordance with O. Reg. 143/16 - 
Quantification, Reporting, and Verification of Greenhouse Gas Emissions Regulation standard 
quantification methods ON. 350 and ON. 400, respectively. The Utilities continue to monitor developments 
and attend stakeholder consultations in Ontario.

The Utilities utilize emissions data management processes and systems to help with the data capture and 
mandatory and voluntary reporting needs. Quantification methodologies and emission factors will 
continually be updated in the system as required. Each Utility publicly reports its GHG emissions and has 
developed internal procedures for more frequent monthly Cap and Trade related GHG reporting. 
Collectively, the Utilities continue to work with industry associations to refine quantification methodologies 
and emissions factors, as well as best management practices to minimize emissions. The Utilities plans to 
reduce emissions in 2018 are outlined in the Facility Abatement Plan within their respective Compliance 
Plans.

We had approximately 12,700 employees as at December 31, 2017, including approximately 8,500 

employees in Canada. Approximately 1,800 of our employees are subject to collective bargaining 

agreements governing their employment with us. Approximately 48% of those employees are covered 

under agreements that either have expired or will expire by December 31, 2018. We are currently going 

through the process of collective bargaining in respect to the expired or expiring contracts. We have 

mature working relationships with our labor unions and the parties have traditionally committed 

themselves to the achievement of renewal agreements without a work stoppage.

EXECUTIVES AND OTHER OFFICERS

The following table sets forth information regarding our executive and other officers.

Name

Al Monaco

Age

Position

President & Chief Executive Officer

John K. Whelen

Executive Vice President & Chief Financial Officer

Cynthia L. Hansen

Executive Vice President, Utilities & Power Operations

D. Guy Jarvis

Byron C. Neiles

Robert R. Rooney

William T. Yardley

Vern D. Yu

Allen C. Capps

Executive Vice President, Liquids Pipelines

Executive Vice President, Corporate Services

Executive Vice President & Chief Legal Officer

Executive Vice President & President, Gas Transmission

& Midstream

Executive Vice President & Chief Development Officer

Vice President & Chief Accounting Officer

58

58

53

54

52

61

53

51

47

Al Monaco was appointed President and Chief Executive Officer on October 1, 2012. He is also a 

member of the Enbridge Board of Directors. Prior to being appointed President of Enbridge, Mr. Monaco 

served as President, Gas Pipelines, Green Energy & International with responsibility for the growth and 

operations of our gas pipelines, including the gas gathering and processing operations in the United 

States, our gulf coast offshore assets and our investments in Alliance, Vector and Aux Sable, as well as 

our International business development and investment activities and Green Energy. 

John K. Whelen was appointed Executive Vice President and Chief Financial Officer of Enbridge on 

October 15, 2014. Previously our Senior Vice President and Controller, Mr. Whelen retained executive 

leadership for our financial reporting function, while assuming responsibility for our tax and treasury 

functions. Mr. Whelen has been part of the Enbridge team since 1992, when he assumed the Manager of 

Treasury role at Consumers Gas (now EGD).

Cynthia L. Hansen was appointed Executive Vice President, Utilities and Power Operations, on February 

27, 2017. Ms. Hansen is responsible for the overall leadership and operations of EGD and Union Gas, as 

well as Enbridge Gas New Brunswick Inc. and Gazifère. She also holds responsibility for the operations 

of our power generating assets, which currently include renewable energy investments in wind, solar, 

geothermal and hydroelectric, as well as waste heat recovery facilities and power transmission lines 

owned in whole or in part by us.

D. Guy Jarvis was appointed Executive Vice President, Liquids Pipelines and Major Projects on May 2, 

2016. Mr. Jarvis has been President of our Liquids Pipelines group since March 1, 2014, with 

responsibility for all of our crude oil and liquids pipeline businesses across North America. Mr. Jarvis 

previously held the title of Chief Commercial Officer for Liquids Pipelines, with responsibility for strategic 

36

37

or charges under environmental legislation, and potential third-party liability claims by affected land 

EMPLOYEES

owners.

The gas distribution system and our other operations must maintain a number of environmental approvals 

and permits from governmental authorities to operate. As a result, these facilities and the distribution 

network are subject to periodic inspection. An Annual Written Summary Report is submitted to the Ontario 

Ministry of Environment and Climate Change (MOECC) to demonstrate we are in good standing in 

relation to its Environmental Compliance Approvals. Failure to maintain regulatory compliance could 

result in operational interruptions, fines, penalties, and/or orders for additional pollution control technology 

or environmental remediation, etc. As environmental requirements and regulations become more 

stringent, the cost to maintain compliance and the time required to obtain approvals has consistently 

increased.

Ontario commenced a cap and trade system on January 1, 2017. Under the cap and trade regulation, 

EGD and Union Gas (together, the Utilities) are required to purchase emission allowances or credits for 

most of our customers’ use of natural gas as well as for emissions from our own operations. This process 

is complex and requires ongoing monitoring of the carbon market and related climate change and carbon 

policies not only in Ontario but also in other newly linked jurisdictions as at January 1, 2018 - namely 

California and Quebec. This linkage which has been enabled in Ontario with various GHG reporting and 

cap and trade regulation amendments over the course of 2017 will create a larger and more liquid market 

for carbon allowances and credits, which may help to keep compliance costs for our customers down. 

However, non-compliance or unexpected policy changes may cause significant changes to the cost of 

maintaining compliance and needs to be closely monitored to ensure impacts are understood.

As required by the OEB Cap and Trade Framework, the Utilities each submitted 2017 Compliance Plans, 

which subsequently received supportive endorsement and approval of cost recovery in 2017 rates. The 

Utilities are in the process of defending their individually filed 2018 Compliance Plans. The OEB approved 

use of the 2017 final rate for recovery of 2018 cap and trade compliance costs until determined otherwise. 

Further, the OEB Cap and Trade Framework identifies that the Utilities are expected to file 2019/2020 

Compliance Plans as well as an Annual Report summarizing 2017 results by August 1, 2018. The 

Compliance Plans detail how the Utilities will meet their respective carbon compliance obligations through 

carbon allowance and/or offset procurement as well as through customer and facility abatement projects 

that may be deemed cost effective. By creating prudent and thoughtful plans and executing with 

excellence, the Utilities can best mitigate the risk of cost disallowance. 

As with previous years, in 2017 the Utilities each reported GHG emissions to the Ontario MOECC, 

Environment and Climate Change Canada, and a number of voluntary reporting programs. Emissions 

from Ontario combustion sources were verified in detail by a third party accredited verifier with no material 

discrepancies found. Additionally, operational emissions from venting, fugitive and natural gas distribution 

emissions were reported to the MOECC for the first time in 2017 in accordance with O. Reg. 143/16 - 

Quantification, Reporting, and Verification of Greenhouse Gas Emissions Regulation standard 

quantification methods ON. 350 and ON. 400, respectively. The Utilities continue to monitor developments 

and attend stakeholder consultations in Ontario.

The Utilities utilize emissions data management processes and systems to help with the data capture and 

mandatory and voluntary reporting needs. Quantification methodologies and emission factors will 

continually be updated in the system as required. Each Utility publicly reports its GHG emissions and has 

developed internal procedures for more frequent monthly Cap and Trade related GHG reporting. 

Collectively, the Utilities continue to work with industry associations to refine quantification methodologies 

and emissions factors, as well as best management practices to minimize emissions. The Utilities plans to 

reduce emissions in 2018 are outlined in the Facility Abatement Plan within their respective Compliance 

Plans.

We had approximately 12,700 employees as at December 31, 2017, including approximately 8,500 
employees in Canada. Approximately 1,800 of our employees are subject to collective bargaining 
agreements governing their employment with us. Approximately 48% of those employees are covered 
under agreements that either have expired or will expire by December 31, 2018. We are currently going 
through the process of collective bargaining in respect to the expired or expiring contracts. We have 
mature working relationships with our labor unions and the parties have traditionally committed 
themselves to the achievement of renewal agreements without a work stoppage.

EXECUTIVES AND OTHER OFFICERS

The following table sets forth information regarding our executive and other officers.

Name
Al Monaco

John K. Whelen

Cynthia L. Hansen

D. Guy Jarvis

Byron C. Neiles

Robert R. Rooney
William T. Yardley

Vern D. Yu

Allen C. Capps

Age
58

Position
President & Chief Executive Officer

58

53

54

52

61
53

51

47

Executive Vice President & Chief Financial Officer

Executive Vice President, Utilities & Power Operations

Executive Vice President, Liquids Pipelines

Executive Vice President, Corporate Services

Executive Vice President & Chief Legal Officer

Executive Vice President & President, Gas Transmission
& Midstream

Executive Vice President & Chief Development Officer

Vice President & Chief Accounting Officer

Al Monaco was appointed President and Chief Executive Officer on October 1, 2012. He is also a 
member of the Enbridge Board of Directors. Prior to being appointed President of Enbridge, Mr. Monaco 
served as President, Gas Pipelines, Green Energy & International with responsibility for the growth and 
operations of our gas pipelines, including the gas gathering and processing operations in the United 
States, our gulf coast offshore assets and our investments in Alliance, Vector and Aux Sable, as well as 
our International business development and investment activities and Green Energy. 

John K. Whelen was appointed Executive Vice President and Chief Financial Officer of Enbridge on 
October 15, 2014. Previously our Senior Vice President and Controller, Mr. Whelen retained executive 
leadership for our financial reporting function, while assuming responsibility for our tax and treasury 
functions. Mr. Whelen has been part of the Enbridge team since 1992, when he assumed the Manager of 
Treasury role at Consumers Gas (now EGD).

Cynthia L. Hansen was appointed Executive Vice President, Utilities and Power Operations, on February 
27, 2017. Ms. Hansen is responsible for the overall leadership and operations of EGD and Union Gas, as 
well as Enbridge Gas New Brunswick Inc. and Gazifère. She also holds responsibility for the operations 
of our power generating assets, which currently include renewable energy investments in wind, solar, 
geothermal and hydroelectric, as well as waste heat recovery facilities and power transmission lines 
owned in whole or in part by us.

D. Guy Jarvis was appointed Executive Vice President, Liquids Pipelines and Major Projects on May 2, 
2016. Mr. Jarvis has been President of our Liquids Pipelines group since March 1, 2014, with 
responsibility for all of our crude oil and liquids pipeline businesses across North America. Mr. Jarvis 
previously held the title of Chief Commercial Officer for Liquids Pipelines, with responsibility for strategic 

36

37

and integrated services, customer service, finance, and business and market development. Prior to Mr. 
Jarvis' work in Liquids Pipelines, he served as President, Gas Distribution, providing overall leadership to 
EGD, as well as Enbridge Gas New Brunswick Inc. and Gazifère.

Byron C. Neiles was appointed Executive Vice President, Corporate Services on May 2, 2016. Mr. Neiles 
has oversight of our Information Technology, Human Resources, Real Estate & Workplace Services, 
Supply Chain Management, Enterprise Safety and Operational Reliability, and aviation groups. Mr. Neiles 
had previously held the role of Senior Vice President, Major Projects, Enterprise Safety and Operational 
Reliability, and had been Senior Vice President of Major Projects since November 2011, after joining our 
Major Projects group in April 2008.

Robert R. Rooney was appointed Executive Vice President and Chief Legal Officer on February 1, 2017. 
Mr. Rooney leads our legal team across the organization, as well as Public Affairs and Communications 
(including Corporate Social Responsibility).

William T. Yardley was named Executive Vice President and President of Gas Transmission and 
Midstream on February 27, 2017. Mr. Yardley is also the President and Chairman of the Board of SEP. 
Mr. Yardley, based in Houston, was previously President of Spectra Energy’s United States Transmission 
and Storage business, leading the business development, project execution, operations and environment, 
health and safety efforts associated with Spectra Energy’s United States portfolio of assets.

Vern D. Yu was appointed Executive Vice President and Chief Development Officer on May 2, 2016. Mr. 
Yu leads our Corporate Development team in driving growth opportunities, while also establishing capital 
allocation parameters and portfolio mix. Mr. Yu also provides executive oversight to our Energy Services 
group, Tidal Energy. Previously, Mr. Yu served as Senior Vice President, Corporate Planning and Chief 
Development Officer. He has been the lead of our Corporate Development team since July 1, 2014.

Allen C. Capps is the Vice President and Chief Accounting Officer of Enbridge. Mr. Capps is responsible 
for our accounting operations and financial reporting functions, including internal and external financial 
reports. Prior to assuming his current role in 2017, Mr. Capps served as Vice President and Controller of 
Spectra Energy, responsible for the financial accounting and reporting functions.

ADDITIONAL INFORMATION

Additional information about us is available on our website at www.enbridge.com, on SEDAR at 
www.sedar.com and on EDGAR at www.sec.gov. The aforementioned information is made available in 
accordance with legal requirements and is not, unless otherwise specifically stated, incorporated by 
reference into this Annual Report on Form 10-K. We make available free of charge, through our website, 
annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K and 
amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities 
Exchange Act of 1934, as well as proxy statements, as soon as reasonably practicable after we 
electronically file such material with, or furnish it to, the SEC. Reports, proxy statements and other 
information filed with the SEC may also be obtained through the SEC’s website (www.sec.gov) or by 
visiting the Public Reference Room of the SEC at 100 F Street, N.E., Washington D.C. 20549 or calling 
the SEC at 1-800-SEC-0330.

ENBRIDGE ENERGY PARTNERS, L.P. AND ENBRIDGE ENERGY MANAGEMENT, L.L.C.
Additional information about EEP and Enbridge Energy Management, L.L.C. can be found in their Annual 
Reports on Form 10-Ks that have been filed with the SEC. These documents contain detailed disclosure 
with respect to EEP and Enbridge Energy Management, L.L.C., respectively, and are publicly available on 
EDGAR at www.sec.gov. No part of the Form10-Ks filed by EEP and Enbridge Energy Management, 
L.L.C. are, unless otherwise specifically stated, incorporated by reference into this Annual Report on 
Form 10-K.

ENBRIDGE GAS DISTRIBUTION INC.

Additional information about EGD can be found in its annual information form, financial statements and 

management's discussion and analysis (MD&A) for the year ended December 31, 2017 which have been 

filed with the securities commissions or similar authorities in each of the provinces of Canada. These 

documents contain detailed disclosure with respect to EGD and are publicly available on SEDAR at 

www.sedar.com. These documents are not, unless otherwise specifically stated, incorporated by 

reference into this Annual Report on Form 10-K.

ENBRIDGE INCOME FUND

Additional information about the Fund can be found in its annual information form, financial statements 

and MD&A as well as the financial statements and MD&A of EIPLP for the year ended December 31, 

2017 which have been filed with the securities commissions or similar authorities in each of the provinces 

of Canada. These documents contain detailed disclosure with respect to the Fund and are publicly 

available on SEDAR at www.sedar.com under the Fund's profile. These documents are not, unless 

otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

ENBRIDGE INCOME FUND HOLDINGS INC.

Additional information about ENF can be found in its annual information form, financial statements and 

MD&A for the year ended December 31, 2017 which have been filed with the securities commissions or 

similar authorities in each of the provinces of Canada. These documents contain detailed disclosure with 

respect to ENF and are publicly available on SEDAR at www.sedar.com. These documents are not, 

unless otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

ENBRIDGE PIPELINES INC.

Additional information about EPI can be found in its annual information form, financial statements and 

MD&A for the year ended December 31, 2017 which have been filed with the securities commissions or 

similar authorities in each of the provinces of Canada. These documents contain detailed disclosure with 

respect to EPI and are publicly available on SEDAR at www.sedar.com. These documents are not, unless 

otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

SPECTRA ENERGY PARTNERS, L.P.

Additional information about SEP can be found in its Annual Report on Form10-K that has been filed with 

the SEC. This document contains detailed disclosure with respect to SEP, and is publicly available on 

EDGAR at www.sec.gov. No part of the Form 10-K filed by SEP is, unless otherwise specifically stated, 

incorporated by reference into this Annual Report on Form 10-K.

UNION GAS LIMITED

Additional information about Union Gas can be found in its annual information form, financial statements 

and MD&A for the year ended December 31, 2017 which have been filed with the securities commissions 

or similar authorities in each of the provinces of Canada. These documents contain detailed disclosure 

with respect to Union Gas and are publicly available on SEDAR at www.sedar.com. These documents are 

not, unless otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

WESTCOAST ENERGY INC.

Additional information about Westcoast Energy Inc. can be found in its annual information form, financial 

statements and MD&A for the year ended December 31, 2017 which have been filed with the securities 

commissions or similar authorities in each of the provinces of Canada. These documents contain detailed 

disclosure with respect to Westcoast Energy Inc. and are publicly available on SEDAR at www.sedar.com. 

These documents are not, unless otherwise specifically stated, incorporated by reference into this Annual 

Report on Form 10-K.

38

39

and integrated services, customer service, finance, and business and market development. Prior to Mr. 

Jarvis' work in Liquids Pipelines, he served as President, Gas Distribution, providing overall leadership to 

EGD, as well as Enbridge Gas New Brunswick Inc. and Gazifère.

Byron C. Neiles was appointed Executive Vice President, Corporate Services on May 2, 2016. Mr. Neiles 

has oversight of our Information Technology, Human Resources, Real Estate & Workplace Services, 

Supply Chain Management, Enterprise Safety and Operational Reliability, and aviation groups. Mr. Neiles 

had previously held the role of Senior Vice President, Major Projects, Enterprise Safety and Operational 

Reliability, and had been Senior Vice President of Major Projects since November 2011, after joining our 

Major Projects group in April 2008.

Robert R. Rooney was appointed Executive Vice President and Chief Legal Officer on February 1, 2017. 

Mr. Rooney leads our legal team across the organization, as well as Public Affairs and Communications 

(including Corporate Social Responsibility).

William T. Yardley was named Executive Vice President and President of Gas Transmission and 

Midstream on February 27, 2017. Mr. Yardley is also the President and Chairman of the Board of SEP. 

Mr. Yardley, based in Houston, was previously President of Spectra Energy’s United States Transmission 

and Storage business, leading the business development, project execution, operations and environment, 

health and safety efforts associated with Spectra Energy’s United States portfolio of assets.

Vern D. Yu was appointed Executive Vice President and Chief Development Officer on May 2, 2016. Mr. 

Yu leads our Corporate Development team in driving growth opportunities, while also establishing capital 

allocation parameters and portfolio mix. Mr. Yu also provides executive oversight to our Energy Services 

group, Tidal Energy. Previously, Mr. Yu served as Senior Vice President, Corporate Planning and Chief 

Development Officer. He has been the lead of our Corporate Development team since July 1, 2014.

Allen C. Capps is the Vice President and Chief Accounting Officer of Enbridge. Mr. Capps is responsible 

for our accounting operations and financial reporting functions, including internal and external financial 

reports. Prior to assuming his current role in 2017, Mr. Capps served as Vice President and Controller of 

Spectra Energy, responsible for the financial accounting and reporting functions.

ADDITIONAL INFORMATION

Additional information about us is available on our website at www.enbridge.com, on SEDAR at 

www.sedar.com and on EDGAR at www.sec.gov. The aforementioned information is made available in 

accordance with legal requirements and is not, unless otherwise specifically stated, incorporated by 

reference into this Annual Report on Form 10-K. We make available free of charge, through our website, 

annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K and 

amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities 

Exchange Act of 1934, as well as proxy statements, as soon as reasonably practicable after we 

electronically file such material with, or furnish it to, the SEC. Reports, proxy statements and other 

information filed with the SEC may also be obtained through the SEC’s website (www.sec.gov) or by 

visiting the Public Reference Room of the SEC at 100 F Street, N.E., Washington D.C. 20549 or calling 

the SEC at 1-800-SEC-0330.

ENBRIDGE ENERGY PARTNERS, L.P. AND ENBRIDGE ENERGY MANAGEMENT, L.L.C.

Additional information about EEP and Enbridge Energy Management, L.L.C. can be found in their Annual 

Reports on Form 10-Ks that have been filed with the SEC. These documents contain detailed disclosure 

with respect to EEP and Enbridge Energy Management, L.L.C., respectively, and are publicly available on 

EDGAR at www.sec.gov. No part of the Form10-Ks filed by EEP and Enbridge Energy Management, 

L.L.C. are, unless otherwise specifically stated, incorporated by reference into this Annual Report on 

Form 10-K.

ENBRIDGE GAS DISTRIBUTION INC.
Additional information about EGD can be found in its annual information form, financial statements and 
management's discussion and analysis (MD&A) for the year ended December 31, 2017 which have been 
filed with the securities commissions or similar authorities in each of the provinces of Canada. These 
documents contain detailed disclosure with respect to EGD and are publicly available on SEDAR at 
www.sedar.com. These documents are not, unless otherwise specifically stated, incorporated by 
reference into this Annual Report on Form 10-K.

ENBRIDGE INCOME FUND
Additional information about the Fund can be found in its annual information form, financial statements 
and MD&A as well as the financial statements and MD&A of EIPLP for the year ended December 31, 
2017 which have been filed with the securities commissions or similar authorities in each of the provinces 
of Canada. These documents contain detailed disclosure with respect to the Fund and are publicly 
available on SEDAR at www.sedar.com under the Fund's profile. These documents are not, unless 
otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

ENBRIDGE INCOME FUND HOLDINGS INC.
Additional information about ENF can be found in its annual information form, financial statements and 
MD&A for the year ended December 31, 2017 which have been filed with the securities commissions or 
similar authorities in each of the provinces of Canada. These documents contain detailed disclosure with 
respect to ENF and are publicly available on SEDAR at www.sedar.com. These documents are not, 
unless otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

ENBRIDGE PIPELINES INC.
Additional information about EPI can be found in its annual information form, financial statements and 
MD&A for the year ended December 31, 2017 which have been filed with the securities commissions or 
similar authorities in each of the provinces of Canada. These documents contain detailed disclosure with 
respect to EPI and are publicly available on SEDAR at www.sedar.com. These documents are not, unless 
otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

SPECTRA ENERGY PARTNERS, L.P.
Additional information about SEP can be found in its Annual Report on Form10-K that has been filed with 
the SEC. This document contains detailed disclosure with respect to SEP, and is publicly available on 
EDGAR at www.sec.gov. No part of the Form 10-K filed by SEP is, unless otherwise specifically stated, 
incorporated by reference into this Annual Report on Form 10-K.

UNION GAS LIMITED
Additional information about Union Gas can be found in its annual information form, financial statements 
and MD&A for the year ended December 31, 2017 which have been filed with the securities commissions 
or similar authorities in each of the provinces of Canada. These documents contain detailed disclosure 
with respect to Union Gas and are publicly available on SEDAR at www.sedar.com. These documents are 
not, unless otherwise specifically stated, incorporated by reference into this Annual Report on Form 10-K.

WESTCOAST ENERGY INC.
Additional information about Westcoast Energy Inc. can be found in its annual information form, financial 
statements and MD&A for the year ended December 31, 2017 which have been filed with the securities 
commissions or similar authorities in each of the provinces of Canada. These documents contain detailed 
disclosure with respect to Westcoast Energy Inc. and are publicly available on SEDAR at www.sedar.com. 
These documents are not, unless otherwise specifically stated, incorporated by reference into this Annual 
Report on Form 10-K.

38

39

ITEM 1A. RISK FACTORS

Execution of our capital projects subjects us to various regulatory, development, operational and 
market risks that may affect our financial results. 

Our ability to successfully execute the development of our organic growth projects is subject to various 
regulatory, development, operational and market risks, including: 

• 

• 

• 

• 
• 
• 

• 
• 

the ability to obtain necessary approvals and permits from governments and regulatory agencies 
on a timely basis and on acceptable terms and to maintain those issued approvals and permits 
and satisfy the terms and conditions imposed therein; 
potential changes in federal, state, provincial and local statutes and regulations, including 
environmental requirements, that may prevent a project from proceeding or increase the 
anticipated cost of the project; 
impediments on our ability to acquire or renew rights-of-way or land rights on a timely basis and 
on acceptable terms; 
opposition to our projects by third parties, including special interest groups; 
the availability of skilled labor, equipment and materials to complete projects; 
the ability to construct projects within anticipated costs, including the risk of cost overruns 
resulting from inflation or increased costs of equipment, materials or labor, contractor or supplier 
non-performance, weather, geologic conditions or other factors beyond our control, that may be 
material; 
general economic factors that affect the demand for our projects; and 
the ability to raise financing for these capital projects. 

Any of these risks could prevent a project from proceeding, delay its completion or increase its anticipated 
cost. Recent projects that have experienced delays include the United States portion of the L3R Program 
(U.S. L3R Program) and NEXUS. In the fourth quarter of 2016, we determined Northern Gateway could 
not proceed as envisioned. New projects may not achieve their expected investment return, which could 
affect our financial results, and hinder our ability to secure future projects. 

Cyber-attacks or security breaches could adversely affect our business, operations or financial 
results. 

Our business is dependent upon information systems and other digital technologies for controlling our 
plants and pipelines, processing transactions and summarizing and reporting results of operations. The 
secure processing, maintenance and transmission of information is critical to our operations. A security 
breach of our network or systems could result in improper operation of our assets, potentially including 
delays in the delivery or availability of our customers’ products, contamination or degradation of the 
products we transport, store or distribute, or releases of hydrocarbon products for which we could be held 
liable. Furthermore, we collect and store sensitive data in the ordinary course of our business, including 
personal identification information of our employees as well as our proprietary business information and 
that of our customers, suppliers, investors and other stakeholders. We have a cyber-security controls 
framework in place which has been derived from the National Institute of Standards and Technology 
Cyber-security Framework and International Organization for Standardization 27001 standards. We 
monitor our control effectiveness in an increasing threat landscape and continuously take action to 
improve our security posture. We have implemented a 7X24 security operations center to monitor, detect 
and investigate any anomalous activity in our network together with an incident response process that we 
test on a monthly basis. We conduct independent cyber-security audits and penetration tests on a regular 
basis to test that our preventative and detective controls are working as designed. Despite our security 
measures, our information systems may become the target of cyber-attacks or security breaches 
(including employee error, malfeasance or other breaches), which could compromise our network or 
systems and result in the release or loss of the information stored therein, misappropriation of assets, 
disruption to our operations or damage to our facilities. Our current insurance coverage programs do not 

contain specific coverage for cyber-attacks or security breaches. As a result of a cyber-attack or security 

breach, we could also be liable under laws that protect the privacy of personal information, subject to 

regulatory penalties, experience damage to our reputation or a loss of consumer confidence in our 

products and services, or incur additional costs for remediation and modification or enhancement of our 

information systems to prevent future occurrences, all of which could adversely affect our business, 

operations or financial results. 

Changes in our reputation with stakeholders, special interest groups, political leadership, the 

media or other entities could have negative impacts on our business, operations or financial 

results. 

There could be negative impacts on our business, operations or financial results due to changes in our 

reputation with stakeholders, special interest groups (including non-governmental organizations), political 

leadership, the media or other entities. Public opinion may be influenced by certain media and special 

interest groups’ negative portrayal of the industry in which we operate as well as their opposition to 

development projects, such as the Bakken Pipeline System. Potential impacts of a negative public 

opinion may include: 

loss of business; 

• 

• 

• 

• 

• 

• 

loss of ability to secure growth opportunities;  

delays in project execution; 

legal action;  

increased regulatory oversight or delays in regulatory approval; and 

loss of ability to hire and retain top talent. 

We are also exposed to the risk of higher costs, delays or even project cancellations due to increasing 

pressure on governments and regulators by special interest groups. Recent judicial decisions have 

increased the ability of special interest groups to make claims and oppose projects in regulatory and legal 

forums. In addition to issues raised by groups focused on particular project impacts, we and others in the 

energy and pipeline businesses are facing opposition from organizations opposed to oil sands 

development and shipment of production from oil sands regions. 

Pipeline operations involve numerous risks that may adversely affect our business and financial 

results. 

Operation of complex pipeline systems, gathering, treating, storing and processing operations involves 

many risks, hazards and uncertainties. These events include adverse weather conditions, accidents, the 

breakdown or failure of equipment or processes, the performance of the facilities below expected levels of 

capacity and efficiency and catastrophic events such as explosions, fires, earthquakes, hurricanes, 

floods, landslides or other similar events beyond our control. These types of catastrophic events could 

result in loss of human life, significant damage to property, environmental pollution and impairment of our 

operations, any of which could also result in substantial losses for which insurance may not be sufficient 

or available and for which we may bear a part or all of the cost. We have experienced such events in the 

past, including in 2010 on Lines 6A and 6B Lakehead System. which is discussed in Part II. Item 7. 

Management's Discussion and Analysis of Financial Condition and Results of Operations - Legal and 

Other Updates. In addition, we could be subject to significant fines and penalties from regulators in 

connection with such events. Environmental incidents could also lead to an increased cost of operating 

and insuring our assets, thereby negatively impacting earnings. An environmental incident could have 

lasting reputational impacts to us and could impact our ability to work with various stakeholders. For 

pipeline and storage assets located near populated areas, including residential communities, commercial 

business centers, industrial sites and other public gathering locations, the level of damage resulting from 

these catastrophic events could be greater. 

40

41

ITEM 1A. RISK FACTORS

Execution of our capital projects subjects us to various regulatory, development, operational and 

market risks that may affect our financial results. 

Our ability to successfully execute the development of our organic growth projects is subject to various 

regulatory, development, operational and market risks, including: 

the ability to obtain necessary approvals and permits from governments and regulatory agencies 

on a timely basis and on acceptable terms and to maintain those issued approvals and permits 

and satisfy the terms and conditions imposed therein; 

potential changes in federal, state, provincial and local statutes and regulations, including 

environmental requirements, that may prevent a project from proceeding or increase the 

anticipated cost of the project; 

on acceptable terms; 

impediments on our ability to acquire or renew rights-of-way or land rights on a timely basis and 

opposition to our projects by third parties, including special interest groups; 

the availability of skilled labor, equipment and materials to complete projects; 

the ability to construct projects within anticipated costs, including the risk of cost overruns 

resulting from inflation or increased costs of equipment, materials or labor, contractor or supplier 

non-performance, weather, geologic conditions or other factors beyond our control, that may be 

material; 

general economic factors that affect the demand for our projects; and 

the ability to raise financing for these capital projects. 

• 

• 

• 

• 

• 

• 

• 

• 

Any of these risks could prevent a project from proceeding, delay its completion or increase its anticipated 

cost. Recent projects that have experienced delays include the United States portion of the L3R Program 

(U.S. L3R Program) and NEXUS. In the fourth quarter of 2016, we determined Northern Gateway could 

not proceed as envisioned. New projects may not achieve their expected investment return, which could 

affect our financial results, and hinder our ability to secure future projects. 

Cyber-attacks or security breaches could adversely affect our business, operations or financial 

results. 

Our business is dependent upon information systems and other digital technologies for controlling our 

plants and pipelines, processing transactions and summarizing and reporting results of operations. The 

secure processing, maintenance and transmission of information is critical to our operations. A security 

breach of our network or systems could result in improper operation of our assets, potentially including 

delays in the delivery or availability of our customers’ products, contamination or degradation of the 

products we transport, store or distribute, or releases of hydrocarbon products for which we could be held 

liable. Furthermore, we collect and store sensitive data in the ordinary course of our business, including 

personal identification information of our employees as well as our proprietary business information and 

that of our customers, suppliers, investors and other stakeholders. We have a cyber-security controls 

framework in place which has been derived from the National Institute of Standards and Technology 

Cyber-security Framework and International Organization for Standardization 27001 standards. We 

monitor our control effectiveness in an increasing threat landscape and continuously take action to 

improve our security posture. We have implemented a 7X24 security operations center to monitor, detect 

and investigate any anomalous activity in our network together with an incident response process that we 

test on a monthly basis. We conduct independent cyber-security audits and penetration tests on a regular 

basis to test that our preventative and detective controls are working as designed. Despite our security 

measures, our information systems may become the target of cyber-attacks or security breaches 

(including employee error, malfeasance or other breaches), which could compromise our network or 

systems and result in the release or loss of the information stored therein, misappropriation of assets, 

disruption to our operations or damage to our facilities. Our current insurance coverage programs do not 

contain specific coverage for cyber-attacks or security breaches. As a result of a cyber-attack or security 
breach, we could also be liable under laws that protect the privacy of personal information, subject to 
regulatory penalties, experience damage to our reputation or a loss of consumer confidence in our 
products and services, or incur additional costs for remediation and modification or enhancement of our 
information systems to prevent future occurrences, all of which could adversely affect our business, 
operations or financial results. 

Changes in our reputation with stakeholders, special interest groups, political leadership, the 
media or other entities could have negative impacts on our business, operations or financial 
results. 

There could be negative impacts on our business, operations or financial results due to changes in our 
reputation with stakeholders, special interest groups (including non-governmental organizations), political 
leadership, the media or other entities. Public opinion may be influenced by certain media and special 
interest groups’ negative portrayal of the industry in which we operate as well as their opposition to 
development projects, such as the Bakken Pipeline System. Potential impacts of a negative public 
opinion may include: 

• 
• 
• 
• 
• 
• 

loss of business; 
loss of ability to secure growth opportunities;  
delays in project execution; 
legal action;  
increased regulatory oversight or delays in regulatory approval; and 
loss of ability to hire and retain top talent. 

We are also exposed to the risk of higher costs, delays or even project cancellations due to increasing 
pressure on governments and regulators by special interest groups. Recent judicial decisions have 
increased the ability of special interest groups to make claims and oppose projects in regulatory and legal 
forums. In addition to issues raised by groups focused on particular project impacts, we and others in the 
energy and pipeline businesses are facing opposition from organizations opposed to oil sands 
development and shipment of production from oil sands regions. 

Pipeline operations involve numerous risks that may adversely affect our business and financial 
results. 

Operation of complex pipeline systems, gathering, treating, storing and processing operations involves 
many risks, hazards and uncertainties. These events include adverse weather conditions, accidents, the 
breakdown or failure of equipment or processes, the performance of the facilities below expected levels of 
capacity and efficiency and catastrophic events such as explosions, fires, earthquakes, hurricanes, 
floods, landslides or other similar events beyond our control. These types of catastrophic events could 
result in loss of human life, significant damage to property, environmental pollution and impairment of our 
operations, any of which could also result in substantial losses for which insurance may not be sufficient 
or available and for which we may bear a part or all of the cost. We have experienced such events in the 
past, including in 2010 on Lines 6A and 6B Lakehead System. which is discussed in Part II. Item 7. 
Management's Discussion and Analysis of Financial Condition and Results of Operations - Legal and 
Other Updates. In addition, we could be subject to significant fines and penalties from regulators in 
connection with such events. Environmental incidents could also lead to an increased cost of operating 
and insuring our assets, thereby negatively impacting earnings. An environmental incident could have 
lasting reputational impacts to us and could impact our ability to work with various stakeholders. For 
pipeline and storage assets located near populated areas, including residential communities, commercial 
business centers, industrial sites and other public gathering locations, the level of damage resulting from 
these catastrophic events could be greater. 

40

41

Our assets vary in age and were constructed over many decades which may cause our inspection, 
maintenance or repair costs to increase in the future.  

Our pipelines vary in age and were constructed over many decades. Pipelines are generally long-lived 
assets, and pipeline construction and coating techniques have changed over time. Depending on the era 
of construction, some assets require more frequent inspections, which could result in increased 
maintenance or repair expenditures in the future. Any significant increase in these expenditures could 
adversely affect our business, operations or financial results. 

A service interruption could have a significant impact on our operations, and negatively impact 
financial results, relationships with stakeholders and our reputation. 

A service interruption due to a major power disruption or curtailment of commodity supply could have a 
significant impact on our operations and negatively impact financial results, relationships with 
stakeholders and our reputation. Specifically, for Gas Distribution, any prolonged interruptions would 
ultimately impact gas distribution customers. Service interruptions that impact our crude oil transportation 
services can negatively impact shippers’ operations and earnings as they are dependent on our services 
to move their product to market or fulfill their own contractual arrangements. 

Our operations involve safety risks to the public and to our workers and contractors. 

Several of our pipelines and distribution systems and related assets are operated in close proximity to 
populated areas and a major incident could result in injury to members of the public. In addition, given the 
natural hazards inherent in our operations, our workers and contractors are subject to personal safety 
risks. A public safety incident or an injury to our workers or contractors could result in reputational 
damage to us, material repair costs or increased costs of operating and insuring our assets. 

Our transformation projects may fail to fully deliver anticipated results. 

We launched projects in 2016 to transform various processes, capabilities and reporting systems 
infrastructure to continuously improve effectiveness and efficiency across the organization. 
Transformation project risk is the risk that modernization projects carried out by us and our subsidiaries 
do not fully deliver anticipated results due to insufficiently addressing the risks associated with project 
execution and change management. This could result in negative financial, operational and reputational 
impacts.

An impairment of our assets, including goodwill, property, plant, and equipment, intangible 
assets, and/or equity method investments, could reduce our earnings.  

GAAP requires us to test certain assets for impairment on either an annual basis or when events or 
circumstances occur which indicate that the carrying value of such assets might be impaired. The 
outcome of such testing could result in impairments of our assets including our goodwill, property, plant 
and equipment, intangible assets, and/or equity method investments. Additionally, any asset 
monetizations could result in impairments if such assets are sold or otherwise exchanged for amounts 
less than their carrying value. If we determine that an impairment has occurred, we would be required to 
take an immediate noncash charge to earnings. 

There are utilization risks in respect to our assets. 

In respect to our Liquids Pipeline assets, we are exposed to throughput risk under the CTS on the 
Canadian Mainline and under certain tolling agreements applicable to other Liquids Pipelines assets, 
such as the Lakehead System. A decrease in volumes transported can directly and adversely affect our 
revenues and earnings. Factors such as changing market fundamentals, capacity bottlenecks, 
operational incidents, regulatory restrictions, system maintenance and increased competition can all 

impact the utilization of our assets. Market fundamentals, such as commodity prices and price 

differentials, weather, gasoline price and consumption, alternative energy sources and global supply 

disruptions outside of our control can impact both the supply of and demand for crude oil and other liquid 

hydrocarbons transported on our pipelines. 

In respect to our Gas Transmission and Midstream assets, gas supply and demand dynamics continue to 

change as a result of the development of non-conventional shale gas supplies. The increase in natural 

gas supply has resulted in declines in the price of natural gas in North America. As a result, a shift 

occurred to extraction of gas in richer, wet gas areas with higher NGL content which depressed activity in 

dry fields. This, in turn, has contributed to a resulting oversupply of pipeline takeaway capacity in some 

areas, which can adversely affect our revenues and earnings. 

In respect to our Gas Distribution assets, customers are billed on a combination of both fixed charge and 

volumetric basis and EGD and Union Gas' ability to collect their respective total revenue requirement (the 

cost of providing service, including a reasonable return to the utility) depends on achieving the forecast 

distribution volume established in the rate-making process. The probability of realizing such volume is 

contingent upon four key forecast variables: weather, economic conditions, pricing of competitive energy 

sources and growth in the number of customers. Weather is a significant driver of delivery volumes, given 

that a significant portion of EGD and Union Gas' respective customer base uses natural gas for space 

heating. Distribution volume may also be impacted by the increased adoption of energy efficient 

technologies, along with more efficient building construction, that continue to place downward pressure on 

consumption. In addition, conservation efforts by customers may further contribute to a decline in annual 

average consumption. EGD and Union Gas have deferral accounts approved by the OEB that provide 

regulatory protection against the margin impacts associated with declining annual average consumption 

due to efficiencies and customers’ conservation efforts. Sales and transportation service to large volume 

commercial and industrial customers is more susceptible to prevailing economic conditions. As well, the 

pricing of competitive energy sources affects volume distributed to these sectors as some customers 

have the ability to switch to an alternate fuel. Even in those circumstances where EGD and Union Gas 

each attains their respective total forecast distribution volume, they may not earn their respective 

expected ROE due to other forecast variables, such as the mix between the higher margin residential and 

commercial sectors and the lower margin industrial sector. EGD and Union Gas each remain at risk for 

the actual versus forecast large volume contract commercial and industrial volumes.

In respect to our Green Power and Transmission assets, earnings from these assets are highly 

dependent on weather and atmospheric conditions as well as continued operational availability of these 

energy producing assets. While the expected energy yields for Green Power and Transmission projects 

are predicted using long-term historical data, wind and solar resources are subject to natural variation 

from year to year and from season to season. Any prolonged reduction in wind or solar resources at any 

of the Green Power and Transmission facilities could lead to decreased earnings and cash flows for us. 

Additionally, inefficiencies or interruptions of Green Power and Transmission facilities due to operational 

disturbances or outages resulting from weather conditions or other factors, could also impact earnings. 

Power produced from Green Power and Transmission assets is also often sold to a single counterparty 

under power purchase agreements or other long-term pricing arrangements. In this respect, the 

performance of the Green Power and Transmission assets is dependent on each counterparty performing 

its contractual obligations under the power purchase agreements or pricing arrangement applicable to it. 

We rely on access to short-term and long-term capital markets to finance capital requirements and 

support liquidity needs, and cost effective access to those markets can be affected, particularly if 

we or our rated subsidiaries are unable to maintain an investment-grade credit rating.

A significant portion of our consolidated asset base is financed with debt. The maturity and repayment 

profile of debt used to finance investments often does not correlate to cash flows from assets. 

Accordingly, we rely on access to both short-term and long-term capital markets as a source of liquidity 

42

43

Our assets vary in age and were constructed over many decades which may cause our inspection, 

maintenance or repair costs to increase in the future.  

Our pipelines vary in age and were constructed over many decades. Pipelines are generally long-lived 

assets, and pipeline construction and coating techniques have changed over time. Depending on the era 

of construction, some assets require more frequent inspections, which could result in increased 

maintenance or repair expenditures in the future. Any significant increase in these expenditures could 

adversely affect our business, operations or financial results. 

A service interruption could have a significant impact on our operations, and negatively impact 

financial results, relationships with stakeholders and our reputation. 

A service interruption due to a major power disruption or curtailment of commodity supply could have a 

significant impact on our operations and negatively impact financial results, relationships with 

stakeholders and our reputation. Specifically, for Gas Distribution, any prolonged interruptions would 

ultimately impact gas distribution customers. Service interruptions that impact our crude oil transportation 

services can negatively impact shippers’ operations and earnings as they are dependent on our services 

to move their product to market or fulfill their own contractual arrangements. 

Our operations involve safety risks to the public and to our workers and contractors. 

Several of our pipelines and distribution systems and related assets are operated in close proximity to 

populated areas and a major incident could result in injury to members of the public. In addition, given the 

natural hazards inherent in our operations, our workers and contractors are subject to personal safety 

risks. A public safety incident or an injury to our workers or contractors could result in reputational 

damage to us, material repair costs or increased costs of operating and insuring our assets. 

Our transformation projects may fail to fully deliver anticipated results. 

We launched projects in 2016 to transform various processes, capabilities and reporting systems 

infrastructure to continuously improve effectiveness and efficiency across the organization. 

Transformation project risk is the risk that modernization projects carried out by us and our subsidiaries 

do not fully deliver anticipated results due to insufficiently addressing the risks associated with project 

execution and change management. This could result in negative financial, operational and reputational 

impacts.

An impairment of our assets, including goodwill, property, plant, and equipment, intangible 

assets, and/or equity method investments, could reduce our earnings.  

GAAP requires us to test certain assets for impairment on either an annual basis or when events or 

circumstances occur which indicate that the carrying value of such assets might be impaired. The 

outcome of such testing could result in impairments of our assets including our goodwill, property, plant 

and equipment, intangible assets, and/or equity method investments. Additionally, any asset 

monetizations could result in impairments if such assets are sold or otherwise exchanged for amounts 

less than their carrying value. If we determine that an impairment has occurred, we would be required to 

take an immediate noncash charge to earnings. 

There are utilization risks in respect to our assets. 

In respect to our Liquids Pipeline assets, we are exposed to throughput risk under the CTS on the 

Canadian Mainline and under certain tolling agreements applicable to other Liquids Pipelines assets, 

such as the Lakehead System. A decrease in volumes transported can directly and adversely affect our 

revenues and earnings. Factors such as changing market fundamentals, capacity bottlenecks, 

operational incidents, regulatory restrictions, system maintenance and increased competition can all 

impact the utilization of our assets. Market fundamentals, such as commodity prices and price 
differentials, weather, gasoline price and consumption, alternative energy sources and global supply 
disruptions outside of our control can impact both the supply of and demand for crude oil and other liquid 
hydrocarbons transported on our pipelines. 

In respect to our Gas Transmission and Midstream assets, gas supply and demand dynamics continue to 
change as a result of the development of non-conventional shale gas supplies. The increase in natural 
gas supply has resulted in declines in the price of natural gas in North America. As a result, a shift 
occurred to extraction of gas in richer, wet gas areas with higher NGL content which depressed activity in 
dry fields. This, in turn, has contributed to a resulting oversupply of pipeline takeaway capacity in some 
areas, which can adversely affect our revenues and earnings. 

In respect to our Gas Distribution assets, customers are billed on a combination of both fixed charge and 
volumetric basis and EGD and Union Gas' ability to collect their respective total revenue requirement (the 
cost of providing service, including a reasonable return to the utility) depends on achieving the forecast 
distribution volume established in the rate-making process. The probability of realizing such volume is 
contingent upon four key forecast variables: weather, economic conditions, pricing of competitive energy 
sources and growth in the number of customers. Weather is a significant driver of delivery volumes, given 
that a significant portion of EGD and Union Gas' respective customer base uses natural gas for space 
heating. Distribution volume may also be impacted by the increased adoption of energy efficient 
technologies, along with more efficient building construction, that continue to place downward pressure on 
consumption. In addition, conservation efforts by customers may further contribute to a decline in annual 
average consumption. EGD and Union Gas have deferral accounts approved by the OEB that provide 
regulatory protection against the margin impacts associated with declining annual average consumption 
due to efficiencies and customers’ conservation efforts. Sales and transportation service to large volume 
commercial and industrial customers is more susceptible to prevailing economic conditions. As well, the 
pricing of competitive energy sources affects volume distributed to these sectors as some customers 
have the ability to switch to an alternate fuel. Even in those circumstances where EGD and Union Gas 
each attains their respective total forecast distribution volume, they may not earn their respective 
expected ROE due to other forecast variables, such as the mix between the higher margin residential and 
commercial sectors and the lower margin industrial sector. EGD and Union Gas each remain at risk for 
the actual versus forecast large volume contract commercial and industrial volumes.

In respect to our Green Power and Transmission assets, earnings from these assets are highly 
dependent on weather and atmospheric conditions as well as continued operational availability of these 
energy producing assets. While the expected energy yields for Green Power and Transmission projects 
are predicted using long-term historical data, wind and solar resources are subject to natural variation 
from year to year and from season to season. Any prolonged reduction in wind or solar resources at any 
of the Green Power and Transmission facilities could lead to decreased earnings and cash flows for us. 
Additionally, inefficiencies or interruptions of Green Power and Transmission facilities due to operational 
disturbances or outages resulting from weather conditions or other factors, could also impact earnings. 

Power produced from Green Power and Transmission assets is also often sold to a single counterparty 
under power purchase agreements or other long-term pricing arrangements. In this respect, the 
performance of the Green Power and Transmission assets is dependent on each counterparty performing 
its contractual obligations under the power purchase agreements or pricing arrangement applicable to it. 

We rely on access to short-term and long-term capital markets to finance capital requirements and 
support liquidity needs, and cost effective access to those markets can be affected, particularly if 
we or our rated subsidiaries are unable to maintain an investment-grade credit rating.

A significant portion of our consolidated asset base is financed with debt. The maturity and repayment 
profile of debt used to finance investments often does not correlate to cash flows from assets. 
Accordingly, we rely on access to both short-term and long-term capital markets as a source of liquidity 

42

43

for capital requirements not satisfied by cash flows from operations and to fund investments originally 
financed through debt. Our senior unsecured long-term debt is currently rated investment-grade by 
various rating agencies. If the rating agencies were to rate us or our rated subsidiaries below investment-
grade, our borrowing costs would increase, perhaps significantly. Consequently, we would likely be 
required to pay a higher interest rate in future financings and our potential pool of investors and funding 
sources could decrease.

We maintain revolving credit facilities to provide back-up for commercial paper programs for borrowings 
and/or letters of credit at various entities. These facilities typically include financial covenants and failure 
to maintain these covenants at a particular entity could preclude that entity from issuing commercial paper 
or letters of credit or borrowing under the revolving credit facility, which could affect cash flows or restrict 
business. Furthermore, if our short-term debt rating were to be downgraded, access to the commercial 
paper market could be significantly limited. Although this would not affect our ability to draw under our 
credit facilities, borrowing costs could be significantly higher.

If we are not able to access capital at competitive rates, our ability to finance operations and implement 
our strategy may be affected. Restrictions on our ability to access financial markets may also affect our 
ability to execute our business plan as scheduled. An inability to access capital may limit our ability to 
pursue improvements or acquisitions that we may otherwise rely on for future growth. Any downgrade or 
other event negatively affecting the credit ratings of our subsidiaries could make their costs of borrowing 
higher or access to funding sources more limited, which in turn could increase our need to provide 
liquidity in the form of capital contributions or loans to such subsidiaries, thus reducing the liquidity and 
borrowing availability of the consolidated group.

Our forecasted assumptions may not materialize as expected on our expansion projects, 
acquisitions and divestitures. 

We evaluate expansion projects, acquisitions and divestitures on an ongoing basis. Planning and 
investment analysis is highly dependent on accurate forecasting assumptions and to the extent that these 
assumptions do not materialize, financial performance may be lower or more volatile than expected. 
Volatility and unpredictability in the economy, both locally and globally, change in cost estimates, project 
scoping and risk assessment could result in a loss in our profits. 

We may not be able to sell assets or, if we are able to sell assets, to raise a sufficient amount of 
capital from such asset sales. In addition, the timing to enter into and close any asset sales could 
be significantly different than our expected timeline.

We are planning to monetize certain assets to execute on our strategic priority to focus on core assets 
and to accelerate debt reduction and provide capital for capital and investment expenditures. Given the 
commodity markets, financial markets, and other challenges currently facing the energy sector, our 
competitors may also engage in asset sales leading to lower demand for the assets we wish to sell. We 
may not be able to sell the assets we identify for sale on favorable terms or at all. If we are able to sell 
assets, the timing of the receipt of the asset sale proceeds may not align with the timing of our capital 
requirements. A failure to raise sufficient capital from asset sales or a misalignment of the timing of capital 
raised and capital funding needs could have an adverse impact on our business, financial condition, 
results of operations, and cash flows.

Our operations are subject to pipeline safety laws and regulations, compliance with which may 
require significant capital expenditures, increase our cost of operations and affect or limit our 
business plans. 

Many of our operations are regulated. The nature and degree of regulation and legislation affecting 
energy companies in Canada and the United States have changed significantly in past years and further 
substantial changes may occur.

On February 8, 2018, the Government of Canada introduced legislation to revise the process for 

assessing major resource projects. At this time, we are reviewing the proposed regulatory reforms and the 

effect upon us and our subsidiaries, whether adverse or favorable, if such legislation is passed in its 

current or revised form, is currently uncertain. 

Compliance with legislative changes may impose additional costs on new pipeline projects as well as on 

existing operations. Failure to comply with applicable regulations could result in a number of 

consequences which may have an adverse effect on our operations, earnings, financial condition and 

cash flows. 

Our operations are subject to numerous environmental laws and regulations, compliance with 

which may require significant capital expenditures, increase our cost of operations and affect or 

limit our business plans, or expose us to environmental liabilities. 

We are subject to numerous environmental laws and regulations affecting many aspects of our present 

and future operations, including air emissions, water quality, wastewater discharges, solid waste and 

hazardous waste. 

Failure to comply with environmental laws and regulations may result in the imposition of fines, penalties 

and injunctive measures affecting our operating assets. In addition, changes in environmental laws and 

regulations or the enactment of new environmental laws or regulations could result in a material increase 

in our cost of compliance with such laws and regulations. We may not be able to obtain or maintain all 

required environmental regulatory approvals for our operating assets or development projects. If there is 

a delay in obtaining any required environmental regulatory approvals, if we fail to obtain or comply with 

them, or if environmental laws or regulations change or are administered in a more stringent manner, the 

operations of facilities or the development of new facilities could be prevented, delayed or become 

subject to additional costs. We expect that costs we incur to comply with environmental regulations in the 

future will have a significant effect on our earnings and cash flows. 

We are exposed to the credit risk of our customers.

We are exposed to the credit risk of our customers in the ordinary course of our business. Generally, our 

customers are rated investment-grade, are otherwise considered creditworthy or provide us security to 

satisfy credit concerns. A significant amount of our credit exposures for transmission, storage, and 

gathering and processing services are with customers who have an investment-grade rating (or the 

equivalent based on our evaluation) or are secured by collateral. However, we cannot predict to what 

extent our business would be impacted by deteriorating conditions in the economy, including possible 

declines in our customers’ creditworthiness. As a result of future capital projects for which natural gas and 

oil producers may be the primary customer, our credit exposure with below investment-grade customers 

may increase. It is possible that customer payment defaults, if significant, could adversely affect our 

earnings and cash flows.

Our business requires the retention and recruitment of a skilled workforce, and difficulties 

recruiting and retaining our workforce could result in a failure to implement our business plans. 

Our operations and management require the retention and recruitment of a skilled workforce, including 

engineers, technical personnel and other professionals. We and our affiliates compete with other 

companies in the energy industry for this skilled workforce. If we are unable to retain current employees 

and/or recruit new employees of comparable knowledge and experience, our business could be 

negatively impacted. In addition, we could experience increased allocated costs to retain and recruit 

these professionals. 

44

45

for capital requirements not satisfied by cash flows from operations and to fund investments originally 

financed through debt. Our senior unsecured long-term debt is currently rated investment-grade by 

various rating agencies. If the rating agencies were to rate us or our rated subsidiaries below investment-

grade, our borrowing costs would increase, perhaps significantly. Consequently, we would likely be 

required to pay a higher interest rate in future financings and our potential pool of investors and funding 

sources could decrease.

We maintain revolving credit facilities to provide back-up for commercial paper programs for borrowings 

and/or letters of credit at various entities. These facilities typically include financial covenants and failure 

to maintain these covenants at a particular entity could preclude that entity from issuing commercial paper 

or letters of credit or borrowing under the revolving credit facility, which could affect cash flows or restrict 

business. Furthermore, if our short-term debt rating were to be downgraded, access to the commercial 

paper market could be significantly limited. Although this would not affect our ability to draw under our 

credit facilities, borrowing costs could be significantly higher.

If we are not able to access capital at competitive rates, our ability to finance operations and implement 

our strategy may be affected. Restrictions on our ability to access financial markets may also affect our 

ability to execute our business plan as scheduled. An inability to access capital may limit our ability to 

pursue improvements or acquisitions that we may otherwise rely on for future growth. Any downgrade or 

other event negatively affecting the credit ratings of our subsidiaries could make their costs of borrowing 

higher or access to funding sources more limited, which in turn could increase our need to provide 

liquidity in the form of capital contributions or loans to such subsidiaries, thus reducing the liquidity and 

borrowing availability of the consolidated group.

Our forecasted assumptions may not materialize as expected on our expansion projects, 

acquisitions and divestitures. 

We evaluate expansion projects, acquisitions and divestitures on an ongoing basis. Planning and 

investment analysis is highly dependent on accurate forecasting assumptions and to the extent that these 

assumptions do not materialize, financial performance may be lower or more volatile than expected. 

Volatility and unpredictability in the economy, both locally and globally, change in cost estimates, project 

scoping and risk assessment could result in a loss in our profits. 

We may not be able to sell assets or, if we are able to sell assets, to raise a sufficient amount of 

capital from such asset sales. In addition, the timing to enter into and close any asset sales could 

be significantly different than our expected timeline.

We are planning to monetize certain assets to execute on our strategic priority to focus on core assets 

and to accelerate debt reduction and provide capital for capital and investment expenditures. Given the 

commodity markets, financial markets, and other challenges currently facing the energy sector, our 

competitors may also engage in asset sales leading to lower demand for the assets we wish to sell. We 

may not be able to sell the assets we identify for sale on favorable terms or at all. If we are able to sell 

assets, the timing of the receipt of the asset sale proceeds may not align with the timing of our capital 

requirements. A failure to raise sufficient capital from asset sales or a misalignment of the timing of capital 

raised and capital funding needs could have an adverse impact on our business, financial condition, 

results of operations, and cash flows.

Our operations are subject to pipeline safety laws and regulations, compliance with which may 

require significant capital expenditures, increase our cost of operations and affect or limit our 

business plans. 

Many of our operations are regulated. The nature and degree of regulation and legislation affecting 

energy companies in Canada and the United States have changed significantly in past years and further 

substantial changes may occur.

On February 8, 2018, the Government of Canada introduced legislation to revise the process for 
assessing major resource projects. At this time, we are reviewing the proposed regulatory reforms and the 
effect upon us and our subsidiaries, whether adverse or favorable, if such legislation is passed in its 
current or revised form, is currently uncertain. 

Compliance with legislative changes may impose additional costs on new pipeline projects as well as on 
existing operations. Failure to comply with applicable regulations could result in a number of 
consequences which may have an adverse effect on our operations, earnings, financial condition and 
cash flows. 

Our operations are subject to numerous environmental laws and regulations, compliance with 
which may require significant capital expenditures, increase our cost of operations and affect or 
limit our business plans, or expose us to environmental liabilities. 

We are subject to numerous environmental laws and regulations affecting many aspects of our present 
and future operations, including air emissions, water quality, wastewater discharges, solid waste and 
hazardous waste. 

Failure to comply with environmental laws and regulations may result in the imposition of fines, penalties 
and injunctive measures affecting our operating assets. In addition, changes in environmental laws and 
regulations or the enactment of new environmental laws or regulations could result in a material increase 
in our cost of compliance with such laws and regulations. We may not be able to obtain or maintain all 
required environmental regulatory approvals for our operating assets or development projects. If there is 
a delay in obtaining any required environmental regulatory approvals, if we fail to obtain or comply with 
them, or if environmental laws or regulations change or are administered in a more stringent manner, the 
operations of facilities or the development of new facilities could be prevented, delayed or become 
subject to additional costs. We expect that costs we incur to comply with environmental regulations in the 
future will have a significant effect on our earnings and cash flows. 

We are exposed to the credit risk of our customers.

We are exposed to the credit risk of our customers in the ordinary course of our business. Generally, our 
customers are rated investment-grade, are otherwise considered creditworthy or provide us security to 
satisfy credit concerns. A significant amount of our credit exposures for transmission, storage, and 
gathering and processing services are with customers who have an investment-grade rating (or the 
equivalent based on our evaluation) or are secured by collateral. However, we cannot predict to what 
extent our business would be impacted by deteriorating conditions in the economy, including possible 
declines in our customers’ creditworthiness. As a result of future capital projects for which natural gas and 
oil producers may be the primary customer, our credit exposure with below investment-grade customers 
may increase. It is possible that customer payment defaults, if significant, could adversely affect our 
earnings and cash flows.

Our business requires the retention and recruitment of a skilled workforce, and difficulties 
recruiting and retaining our workforce could result in a failure to implement our business plans. 

Our operations and management require the retention and recruitment of a skilled workforce, including 
engineers, technical personnel and other professionals. We and our affiliates compete with other 
companies in the energy industry for this skilled workforce. If we are unable to retain current employees 
and/or recruit new employees of comparable knowledge and experience, our business could be 
negatively impacted. In addition, we could experience increased allocated costs to retain and recruit 
these professionals. 

44

45

We are involved in numerous legal proceedings, the outcomes of which are uncertain, and 
resolutions adverse to us could adversely affect our financial results.

We are subject to numerous legal proceedings. Litigation is subject to many uncertainties, and we cannot 
predict the outcome of individual matters with assurance. It is reasonably possible that the final resolution 
of some of the matters in which we are involved could require additional expenditures, in excess of 
established reserves, over an extended period of time and in a range of amounts that could adversely 
affect our financial results.

Terrorist attacks and threats, escalation of military activity in response to these attacks or acts of 
war, and other civil unrest or activism could adversely affect our business, operations or financial 
results.

Terrorist attacks and threats, escalation of military activity or acts of war, or other civil unrest or activism 
may have significant effects on general economic conditions, fluctuations in consumer confidence and 
spending and market liquidity, each of which could adversely affect our business. Future terrorist attacks, 
rumors or threats of war, actual conflicts involving the United States, or Canada, or military or trade 
disruptions may significantly affect our operations and those of our customers. Strategic targets, such as 
energy related assets, may be at greater risk of future attacks than other targets in the United States and 
Canada. In addition, increased environmental activism against pipeline construction and operation could 
potentially result in work delays, reduced demand for our products and services, increased legislation or 
denial or delay of permits and rights-of-way. Finally, the disruption or a significant increase in energy 
prices could result in government-imposed price controls. It is possible that any of these occurrences, or a 
combination of them, could adversely affect our business, operations or financial results. 

Our Liquids Pipelines results may be adversely affected by commodity prices. 

Current oil sands production is very robust and is expected to grow in the future as producers actively 
improve the competitiveness of their existing projects; however, prolonged low prices negatively impact 
producers' balance sheets and their ability to invest. Sanctioned projects due to come on stream in the 
next 24 months are not as sensitive to short-term declines in crude oil prices, as investment commitments 
have already been made. A protracted long-term outlook for low crude oil prices could result in delay or 
cancellation of future projects. Wide commodity price basis between Western Canada and global 
tidewater markets have also negatively impacted producer netbacks and margins in the past years that 
largely resulted from pipeline infrastructure takeaway capacity from producing regions in Western Canada 
and North Dakota operating at capacity. 

The tight oil plays of Western Canada and the Bakken region of North Dakota have short cycle break-
even time horizons, typically less than 24 months, and high decline rates that can be well managed 
through active hedging programs and are positioned to react quickly at market signals. Accordingly, 
during periods of comparatively low prices, drilling programs, unsupported by hedging programs, will be 
reduced and as such supply growth from tight oil basins may be lower, which may impact volumes on our 
pipeline systems.  

Additionally, our hedging activities may not be as effective as we intend in reducing the volatility of our 

cash flows. To the extent that we engage in hedging activities to reduce our commodity price exposure, 

we likely will be prevented from realizing the full benefits of price increases above the level of the hedges. 

Our hedging activities can result in substantial losses if hedging arrangements are imperfect or ineffective 

and our hedging policies and procedures are not followed properly or do not work as intended. Further, 

hedging contracts are subject to the credit risk that the other party may prove unable or unwilling to 

perform its obligations under the contracts, particularly during periods of weak and volatile economic 

conditions. In addition, certain of the financial instruments we use to hedge our commodity risk exposures 

must be accounted for on a mark-to-market basis. This causes periodic earnings volatility due to 

fluctuations in commodity prices.

Our Energy Services results may be adversely affected by commodity price volatility.

Energy Services generates margin by capitalizing on quality, time and location differentials when 

opportunities arise. Volatility in commodity prices due to changing marketing conditions could limit margin 

opportunities and impede Energy Services' ability to cover capacity commitments. Furthermore, 

commodity prices could have negative earnings and cash flow impacts if the cost of the commodity is 

greater than resale prices achieved by us.

Our risk management policies cannot eliminate all risks. In addition, any non-compliance with our 

risk management policies could adversely affect our business, operations or financial results.

We use derivative financial instruments to manage the risks associated with movements in foreign 

exchange rates, interest rates, commodity prices and our share price to reduce volatility to our cash flows. 

Based on our risk management policies, all of our derivative financial instruments are associated with an 

underlying asset, liability and/or forecasted transaction. We do not enter into transactions with the 

objective of speculating on commodity prices or interest rates. These policies cannot, however, eliminate 

all risk of unauthorized trading and other speculative activity. Although this activity is monitored 

independently by our risk management function, we remain exposed to the risk of non-compliance with 

our risk management policies. We can provide no assurance that our risk management function will 

detect and prevent all unauthorized trading and other violations of our risk management policies and 

procedures, particularly if deception, collusion or other intentional misconduct is involved, and any such 

violations could adversely affect our business, operations or financial results.

The effects of United States Government policies on trade relations between Canada and the 

United States are uncertain.

The United States Government has continued interest in renegotiating and altering the North American 

Free Trade Agreement (NAFTA) with Canada and Mexico. NAFTA provides protection against tariffs, 

duties and other charges or fees and assures access by the signatories. The NAFTA negotiations have 

introduced a level of uncertainty in the energy markets. The outcome of the NAFTA negotiations could 

result in new rules or its collapse which may be disruptive to energy markets, and could jeopardize our 

ability to remain competitive and have a significant impact on us. 

Our Gas Transmission and Midstream results may be adversely affected by commodity price 
volatility and risks associated with our hedging activities.

The effect of comprehensive United States tax reform legislation on us, whether adverse or 

favorable, is uncertain.

Our exposure to commodity price volatility is inherent to part of our natural gas processing activities. We 
employ a disciplined hedging program to manage this direct commodity price risk. Because we are not 
fully hedged, we may be adversely impacted by commodity price exposure on the commodities we 
receive in-kind as payment for our gathering, processing, treating and transportation services. As a result 
of our unhedged exposure and the pricing of our hedge positions, a substantial decline in the prices of 
these commodities could adversely affect our financial results.

On December 22, 2017, President Trump signed into law H.R. 1, “An Act to provide for reconciliation 

pursuant to titles II and V of the concurrent resolution on the budget for fiscal year 2018” (informally titled 

the Tax Cuts and Jobs Act). The effect of the Tax Cuts and Jobs Act on us, our subsidiaries and our 

shareholders, whether adverse or favorable, is uncertain, but will become more clear as additional 

guidance is issued. 

46

47

We are involved in numerous legal proceedings, the outcomes of which are uncertain, and 

resolutions adverse to us could adversely affect our financial results.

We are subject to numerous legal proceedings. Litigation is subject to many uncertainties, and we cannot 

predict the outcome of individual matters with assurance. It is reasonably possible that the final resolution 

of some of the matters in which we are involved could require additional expenditures, in excess of 

established reserves, over an extended period of time and in a range of amounts that could adversely 

affect our financial results.

Terrorist attacks and threats, escalation of military activity in response to these attacks or acts of 

war, and other civil unrest or activism could adversely affect our business, operations or financial 

results.

Terrorist attacks and threats, escalation of military activity or acts of war, or other civil unrest or activism 

may have significant effects on general economic conditions, fluctuations in consumer confidence and 

spending and market liquidity, each of which could adversely affect our business. Future terrorist attacks, 

rumors or threats of war, actual conflicts involving the United States, or Canada, or military or trade 

disruptions may significantly affect our operations and those of our customers. Strategic targets, such as 

energy related assets, may be at greater risk of future attacks than other targets in the United States and 

Canada. In addition, increased environmental activism against pipeline construction and operation could 

potentially result in work delays, reduced demand for our products and services, increased legislation or 

denial or delay of permits and rights-of-way. Finally, the disruption or a significant increase in energy 

prices could result in government-imposed price controls. It is possible that any of these occurrences, or a 

combination of them, could adversely affect our business, operations or financial results. 

Our Liquids Pipelines results may be adversely affected by commodity prices. 

Current oil sands production is very robust and is expected to grow in the future as producers actively 

improve the competitiveness of their existing projects; however, prolonged low prices negatively impact 

producers' balance sheets and their ability to invest. Sanctioned projects due to come on stream in the 

next 24 months are not as sensitive to short-term declines in crude oil prices, as investment commitments 

have already been made. A protracted long-term outlook for low crude oil prices could result in delay or 

cancellation of future projects. Wide commodity price basis between Western Canada and global 

tidewater markets have also negatively impacted producer netbacks and margins in the past years that 

largely resulted from pipeline infrastructure takeaway capacity from producing regions in Western Canada 

and North Dakota operating at capacity. 

The tight oil plays of Western Canada and the Bakken region of North Dakota have short cycle break-

even time horizons, typically less than 24 months, and high decline rates that can be well managed 

through active hedging programs and are positioned to react quickly at market signals. Accordingly, 

during periods of comparatively low prices, drilling programs, unsupported by hedging programs, will be 

reduced and as such supply growth from tight oil basins may be lower, which may impact volumes on our 

pipeline systems.  

Additionally, our hedging activities may not be as effective as we intend in reducing the volatility of our 
cash flows. To the extent that we engage in hedging activities to reduce our commodity price exposure, 
we likely will be prevented from realizing the full benefits of price increases above the level of the hedges. 
Our hedging activities can result in substantial losses if hedging arrangements are imperfect or ineffective 
and our hedging policies and procedures are not followed properly or do not work as intended. Further, 
hedging contracts are subject to the credit risk that the other party may prove unable or unwilling to 
perform its obligations under the contracts, particularly during periods of weak and volatile economic 
conditions. In addition, certain of the financial instruments we use to hedge our commodity risk exposures 
must be accounted for on a mark-to-market basis. This causes periodic earnings volatility due to 
fluctuations in commodity prices.

Our Energy Services results may be adversely affected by commodity price volatility.

Energy Services generates margin by capitalizing on quality, time and location differentials when 
opportunities arise. Volatility in commodity prices due to changing marketing conditions could limit margin 
opportunities and impede Energy Services' ability to cover capacity commitments. Furthermore, 
commodity prices could have negative earnings and cash flow impacts if the cost of the commodity is 
greater than resale prices achieved by us.

Our risk management policies cannot eliminate all risks. In addition, any non-compliance with our 
risk management policies could adversely affect our business, operations or financial results.

We use derivative financial instruments to manage the risks associated with movements in foreign 
exchange rates, interest rates, commodity prices and our share price to reduce volatility to our cash flows. 
Based on our risk management policies, all of our derivative financial instruments are associated with an 
underlying asset, liability and/or forecasted transaction. We do not enter into transactions with the 
objective of speculating on commodity prices or interest rates. These policies cannot, however, eliminate 
all risk of unauthorized trading and other speculative activity. Although this activity is monitored 
independently by our risk management function, we remain exposed to the risk of non-compliance with 
our risk management policies. We can provide no assurance that our risk management function will 
detect and prevent all unauthorized trading and other violations of our risk management policies and 
procedures, particularly if deception, collusion or other intentional misconduct is involved, and any such 
violations could adversely affect our business, operations or financial results.

The effects of United States Government policies on trade relations between Canada and the 
United States are uncertain.

The United States Government has continued interest in renegotiating and altering the North American 
Free Trade Agreement (NAFTA) with Canada and Mexico. NAFTA provides protection against tariffs, 
duties and other charges or fees and assures access by the signatories. The NAFTA negotiations have 
introduced a level of uncertainty in the energy markets. The outcome of the NAFTA negotiations could 
result in new rules or its collapse which may be disruptive to energy markets, and could jeopardize our 
ability to remain competitive and have a significant impact on us. 

Our Gas Transmission and Midstream results may be adversely affected by commodity price 

volatility and risks associated with our hedging activities.

The effect of comprehensive United States tax reform legislation on us, whether adverse or 
favorable, is uncertain.

Our exposure to commodity price volatility is inherent to part of our natural gas processing activities. We 

employ a disciplined hedging program to manage this direct commodity price risk. Because we are not 

fully hedged, we may be adversely impacted by commodity price exposure on the commodities we 

receive in-kind as payment for our gathering, processing, treating and transportation services. As a result 

of our unhedged exposure and the pricing of our hedge positions, a substantial decline in the prices of 

these commodities could adversely affect our financial results.

On December 22, 2017, President Trump signed into law H.R. 1, “An Act to provide for reconciliation 
pursuant to titles II and V of the concurrent resolution on the budget for fiscal year 2018” (informally titled 
the Tax Cuts and Jobs Act). The effect of the Tax Cuts and Jobs Act on us, our subsidiaries and our 
shareholders, whether adverse or favorable, is uncertain, but will become more clear as additional 
guidance is issued. 

46

47

ITEM 1B. UNRESOLVED STAFF COMMENTS

PART II

None.

ITEM 2. PROPERTIES

Descriptions of our properties and maps depicting the locations of our liquids and natural gas systems are 
included in Item 1. Business.

In general, our systems are located on land owned by others and are operated under easements and 
rights-of-way, licenses, leases or permits that have been granted by private land owners, First Nations, 
Native American Tribes, public authorities, railways or public utilities. Our liquids systems have pumping 
stations, tanks, terminals and certain other facilities that are located on land that is owned by us and/or 
used by us under easements, licenses, leases or permits. Additionally, our natural gas systems have 
natural gas compressor stations, processing plants and treating plants, the vast majority of which are 
located on land that is owned by us, with the remainder used by us under easements, leases or permits.

Titles to our properties acquired in our liquids and natural gas systems are subject to encumbrances in 
some cases. We believe that none of these burdens should materially detract from the value of these 
properties or materially interfere with their use in the operation of our business.

ITEM 3. LEGAL PROCEEDINGS

We are involved in various legal and administrative proceedings and litigation arising in the ordinary 
course of business. The outcome of these matters is not predictable at this time. However, we believe that 
the ultimate resolution of these matters will not have a material adverse effect on our financial condition, 
results of operations or cash flows in future periods. Refer to Part II. Item 7. Management's Discussion 
and Analysis of Financial Condition and Results of Operations - Legal and Other Updates for discussion 
of other legal proceedings.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED 

STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY 

SECURITIES

Our common stock is traded on the TSX and NYSE under the symbol “ENB.” As at January 31, 2018, 

there were approximately 96,107 holders of record of our common stock. A substantially greater number 

of holders of our common stock are "street name" or beneficial holders, whose shares are held by banks, 

brokers and other financial institutions.

Common Stock Data by Quarter

Canadian dollars):

The following table indicates the intra-day high and low prices of our common stock on the TSX (in 

Stock Price Range 

The following table indicates the intra-day high and low prices of our common stock on the NYSE (in U.S. 

dollars):

2017

High 

Low

2016

High 

Low

2017

High

Low

2016

High

Low

Q1

Q2

Q3

Q4

Dividends

$

$

US$

US$

Q1

58.28

53.87

51.31

40.03

Q1

44.52

40.25

39.40

27.43

Stock Price Range 

Q2

57.75

49.61

55.05

48.73

Q2

42.92

37.37

43.39

37.02

2017

0.583

0.610

0.610

0.610

Q3

53.00

48.98

59.19

50.76

Q3

42.31

39.01

45.77

38.58

Q4

52.59

43.91

59.18

53.91

Q4

42.10

34.39

45.09

39.70

2016

0.530

0.530

0.530

0.530

The following table indicates the dividends paid per common share (in Canadian dollars):

Consistent with our objective of delivering annual cash dividend increases, we announced a quarterly 

dividend of $0.671 per common share payable on March 1, 2018, which represents a 10 percent increase 

from the prior quarterly rate. We expect to continue our policy of paying regular cash dividends. The 

declaration and payment of dividends are subject to the sole discretion of our Board of Directors and will 

depend upon many factors, including the financial condition, earnings and capital requirements of our 

operating subsidiaries, covenants associated with certain debt obligations, legal requirements, regulatory 

constraints and other factors deemed relevant by our Board of Directors.

48

49

ITEM 1B. UNRESOLVED STAFF COMMENTS

PART II

None.

ITEM 2. PROPERTIES

included in Item 1. Business.

Descriptions of our properties and maps depicting the locations of our liquids and natural gas systems are 

In general, our systems are located on land owned by others and are operated under easements and 

rights-of-way, licenses, leases or permits that have been granted by private land owners, First Nations, 

Native American Tribes, public authorities, railways or public utilities. Our liquids systems have pumping 

stations, tanks, terminals and certain other facilities that are located on land that is owned by us and/or 

used by us under easements, licenses, leases or permits. Additionally, our natural gas systems have 

natural gas compressor stations, processing plants and treating plants, the vast majority of which are 

located on land that is owned by us, with the remainder used by us under easements, leases or permits.

Titles to our properties acquired in our liquids and natural gas systems are subject to encumbrances in 

some cases. We believe that none of these burdens should materially detract from the value of these 

properties or materially interfere with their use in the operation of our business.

ITEM 3. LEGAL PROCEEDINGS

We are involved in various legal and administrative proceedings and litigation arising in the ordinary 

course of business. The outcome of these matters is not predictable at this time. However, we believe that 

the ultimate resolution of these matters will not have a material adverse effect on our financial condition, 

results of operations or cash flows in future periods. Refer to Part II. Item 7. Management's Discussion 

and Analysis of Financial Condition and Results of Operations - Legal and Other Updates for discussion 

of other legal proceedings.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED 
STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY 
SECURITIES

Our common stock is traded on the TSX and NYSE under the symbol “ENB.” As at January 31, 2018, 
there were approximately 96,107 holders of record of our common stock. A substantially greater number 
of holders of our common stock are "street name" or beneficial holders, whose shares are held by banks, 
brokers and other financial institutions.

Common Stock Data by Quarter
The following table indicates the intra-day high and low prices of our common stock on the TSX (in 
Canadian dollars):

2017
High 
Low

2016
High 
Low

$

$

Stock Price Range 

Q1
58.28
53.87

51.31
40.03

Q2
57.75
49.61

55.05
48.73

Q3
53.00
48.98

59.19
50.76

Q4
52.59
43.91

59.18
53.91

The following table indicates the intra-day high and low prices of our common stock on the NYSE (in U.S. 
dollars):

2017
High
Low

2016
High
Low

US$

US$

Stock Price Range 

Q1
44.52
40.25

39.40
27.43

Q2
42.92
37.37

43.39
37.02

Q3
42.31
39.01

45.77
38.58

Dividends
The following table indicates the dividends paid per common share (in Canadian dollars):

Q1
Q2
Q3
Q4

2017
0.583
0.610
0.610
0.610

Q4
42.10
34.39

45.09
39.70

2016
0.530
0.530
0.530
0.530

Consistent with our objective of delivering annual cash dividend increases, we announced a quarterly 
dividend of $0.671 per common share payable on March 1, 2018, which represents a 10 percent increase 
from the prior quarterly rate. We expect to continue our policy of paying regular cash dividends. The 
declaration and payment of dividends are subject to the sole discretion of our Board of Directors and will 
depend upon many factors, including the financial condition, earnings and capital requirements of our 
operating subsidiaries, covenants associated with certain debt obligations, legal requirements, regulatory 
constraints and other factors deemed relevant by our Board of Directors.

48

49

Securities Authorized for Issuance Under Equity Compensation Plans
Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 
Securities Authorized for Issuance Under Equity Compensation Plans
the SEC relating to our 2018 annual meeting of shareholders.
Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 
the SEC relating to our 2018 annual meeting of shareholders.
Recent Sales of Unregistered Equity Securities
On November 29, 2017, we entered into a private placement for common shares with three institutional 
Recent Sales of Unregistered Equity Securities
investors. The issuance price was $44.84, with gross proceeds of $1.5 billion. We issued 33,456,003 
On November 29, 2017, we entered into a private placement for common shares with three institutional 
common shares in reliance on Rule 506(b) of Regulation S. The proceeds were used to pay down short-
investors. The issuance price was $44.84, with gross proceeds of $1.5 billion. We issued 33,456,003 
term indebtedness pending reinvestment in capital projects.  
common shares in reliance on Rule 506(b) of Regulation S. The proceeds were used to pay down short-
term indebtedness pending reinvestment in capital projects.  
On December 11, 2017, we issued 20,000,000 of Series 19 Preference Shares in Canada pursuant to a 
prospectus supplement to our Canadian base shelf prospectus in reliance on Regulation S. Please refer 
On December 11, 2017, we issued 20,000,000 of Series 19 Preference Shares in Canada pursuant to a 
to Item 7 - Outstanding Share Data for further discussion of the transaction.   
prospectus supplement to our Canadian base shelf prospectus in reliance on Regulation S. Please refer 
to Item 7 - Outstanding Share Data for further discussion of the transaction.   
Issuer Purchases of Equity Securities
None. 
Issuer Purchases of Equity Securities
None. 
Stock Performance Graph 
The following graph reflects the comparative changes in the value from January 1, 2013 through 
Stock Performance Graph 
December 31, 2017 of $100 invested in (1) Enbridge Inc.’s common shares traded on the TSX, (2) the 
The following graph reflects the comparative changes in the value from January 1, 2013 through 
S&P/TSX Composite index and (3) the peer group index (comprising CU, FTS, IPL, PPL, TRP, D, DTE, 
December 31, 2017 of $100 invested in (1) Enbridge Inc.’s common shares traded on the TSX, (2) the 
ETE, EPD, KMI, MMP, NI, OKE, PCG, PAA, SRE and WMB). The amounts included in the table were 
S&P/TSX Composite index and (3) the peer group index (comprising CU, FTS, IPL, PPL, TRP, D, DTE, 
calculated assuming the reinvestment of dividends at the time dividends were paid.
ETE, EPD, KMI, MMP, NI, OKE, PCG, PAA, SRE and WMB). The amounts included in the table were 
calculated assuming the reinvestment of dividends at the time dividends were paid.
Total Shareholder Return
January 1, 2013 – December 31, 2017

$220

$200

$180

$160

$140

$120

$100

$80

Jan
13

Apr

Jul

Oct

Jan
14

Apr

Jul

Oct

Jan
15

Apr

Jul

Oct

Jan
16

Apr

Jul

Oct

Jan
17

Apr

Jul

Oct

Enbridge Inc.

S&P/TSX Composite

Peer Group

ITEM 6. SELECTED FINANCIAL DATA

The following selected financial data should be read in conjunction with Item 7. Management’s Discussion 

and Analysis of Financial Condition and Results of Operations and Item 8. Financial Statements and 

Supplementary Data.

(millions of Canadian dollars, except per share amounts)

Consolidated Statements of Earnings

Operating revenues

Operating income

Earnings/(loss) from continuing operations

(Earnings)/loss attributable to noncontrolling interests 

and redeemable noncontrolling interests

Earnings attributable to controlling interests

Earnings/(loss) attributable to common shareholders

Common Stock Data

Earnings/(loss) per common share

Basic

Diluted

Dividends paid per common share

(millions of Canadian dollars)

Consolidated Statements of Financial Position

Long-term debt including capital leases, less current

Total assets2

portion

Years Ended December 31,

20171

20161

20151

2014

2013

$44,378 $34,560 $33,794 $37,641 $32,918

1,571

3,266

2,581

2,309

1,862

(159)

3,200

1,562

1,365

490

(407)

(240)

2,859

2,529

2,069

1,776

410

251

(37)

(203)

1,405

1,154

1.66

1.65

2.41

1.95

1.93

2.12

(0.04)

(0.04)

1.86

1.39

1.37

1.40

20171

December 31,

20161

20151

2014

2013

135

629

446

0.55

0.55

1.26

$162,093 $85,209 $84,154 $72,280 $57,196

60,865

36,494

39,391

33,423

22,357

1  Our Consolidated Statements of Earnings and Consolidated Statements of Financial Position data reflect the following 

acquisitions, dispositions and impairment:

2017 - Spectra Merger Transaction, acquisition of public interest in Midcoast Energy Partners, L.P. and other impairment

2016 - Sandpiper Project impairment, gain on disposition of South Prairie Region assets, Tupper Plants acquisition and other

2015 - Goodwill impairment

2  We combined Cash and cash equivalents and other amounts previously presented as Bank indebtedness where the 

corresponding bank accounts are subject to pooling arrangements.

Enbridge Inc.
S&P/ TSX Composite
Enbridge Inc.
Peer Group1
S&P/ TSX Composite
1 For the purpose of the graph, it was assumed that CAD:USD conversion ratio remained at 1:1 for the years presented.
Peer Group1
1 For the purpose of the graph, it was assumed that CAD:USD conversion ratio remained at 1:1 for the years presented.

100.00
100.00
100.00
100.00
100.00
100.00

2013
110.93
2013
112.99
110.93
126.35
112.99
126.35

December 31,

December 31,

2015
116.80
2015
114.53
116.80
121.45
114.53
121.45

2014
146.76
2014
124.92
146.76
158.17
124.92
158.17

January 1,
2013
January 1,
2013

2016
149.53
2016
138.67
149.53
158.82
138.67
158.82

2017
136.37
2017
151.28
136.37
163.06
151.28
163.06

50

50

51

Securities Authorized for Issuance Under Equity Compensation Plans

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 

Securities Authorized for Issuance Under Equity Compensation Plans

the SEC relating to our 2018 annual meeting of shareholders.

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 

the SEC relating to our 2018 annual meeting of shareholders.

Recent Sales of Unregistered Equity Securities

On November 29, 2017, we entered into a private placement for common shares with three institutional 

Recent Sales of Unregistered Equity Securities

investors. The issuance price was $44.84, with gross proceeds of $1.5 billion. We issued 33,456,003 

On November 29, 2017, we entered into a private placement for common shares with three institutional 

common shares in reliance on Rule 506(b) of Regulation S. The proceeds were used to pay down short-

investors. The issuance price was $44.84, with gross proceeds of $1.5 billion. We issued 33,456,003 

term indebtedness pending reinvestment in capital projects.  

common shares in reliance on Rule 506(b) of Regulation S. The proceeds were used to pay down short-

term indebtedness pending reinvestment in capital projects.  

On December 11, 2017, we issued 20,000,000 of Series 19 Preference Shares in Canada pursuant to a 

prospectus supplement to our Canadian base shelf prospectus in reliance on Regulation S. Please refer 

On December 11, 2017, we issued 20,000,000 of Series 19 Preference Shares in Canada pursuant to a 

to Item 7 - Outstanding Share Data for further discussion of the transaction.   

prospectus supplement to our Canadian base shelf prospectus in reliance on Regulation S. Please refer 

to Item 7 - Outstanding Share Data for further discussion of the transaction.   

Issuer Purchases of Equity Securities

Issuer Purchases of Equity Securities

None. 

None. 

Stock Performance Graph 

The following graph reflects the comparative changes in the value from January 1, 2013 through 

Stock Performance Graph 

December 31, 2017 of $100 invested in (1) Enbridge Inc.’s common shares traded on the TSX, (2) the 

The following graph reflects the comparative changes in the value from January 1, 2013 through 

S&P/TSX Composite index and (3) the peer group index (comprising CU, FTS, IPL, PPL, TRP, D, DTE, 

December 31, 2017 of $100 invested in (1) Enbridge Inc.’s common shares traded on the TSX, (2) the 

ETE, EPD, KMI, MMP, NI, OKE, PCG, PAA, SRE and WMB). The amounts included in the table were 

S&P/TSX Composite index and (3) the peer group index (comprising CU, FTS, IPL, PPL, TRP, D, DTE, 

calculated assuming the reinvestment of dividends at the time dividends were paid.

ETE, EPD, KMI, MMP, NI, OKE, PCG, PAA, SRE and WMB). The amounts included in the table were 

calculated assuming the reinvestment of dividends at the time dividends were paid.

ITEM 6. SELECTED FINANCIAL DATA

The following selected financial data should be read in conjunction with Item 7. Management’s Discussion 
and Analysis of Financial Condition and Results of Operations and Item 8. Financial Statements and 
Supplementary Data.

(millions of Canadian dollars, except per share amounts)
Consolidated Statements of Earnings
Operating revenues
Operating income
Earnings/(loss) from continuing operations
(Earnings)/loss attributable to noncontrolling interests 

and redeemable noncontrolling interests
Earnings attributable to controlling interests
Earnings/(loss) attributable to common shareholders
Common Stock Data
Earnings/(loss) per common share

Basic
Diluted

Dividends paid per common share

Years Ended December 31,
2014

20161

20151

20171

2013

$44,378 $34,560 $33,794 $37,641 $32,918
1,365
490

1,862
(159)

2,581
2,309

3,200
1,562

1,571
3,266

(407)
2,859
2,529

(240)
2,069
1,776

410
251
(37)

(203)
1,405
1,154

1.66
1.65
2.41

20171

1.95
1.93
2.12

(0.04)
(0.04)
1.86

1.39
1.37
1.40

December 31,

20161

20151

2014

2013

135
629
446

0.55
0.55
1.26

(millions of Canadian dollars)
Consolidated Statements of Financial Position
Total assets2
Long-term debt including capital leases, less current

portion

$162,093 $85,209 $84,154 $72,280 $57,196

60,865

36,494

39,391

33,423

22,357

1  Our Consolidated Statements of Earnings and Consolidated Statements of Financial Position data reflect the following 

acquisitions, dispositions and impairment:
2017 - Spectra Merger Transaction, acquisition of public interest in Midcoast Energy Partners, L.P. and other impairment
2016 - Sandpiper Project impairment, gain on disposition of South Prairie Region assets, Tupper Plants acquisition and other
2015 - Goodwill impairment

2  We combined Cash and cash equivalents and other amounts previously presented as Bank indebtedness where the 

corresponding bank accounts are subject to pooling arrangements.

Enbridge Inc.

S&P/ TSX Composite

Enbridge Inc.

Peer Group1

S&P/ TSX Composite

Peer Group1

1 For the purpose of the graph, it was assumed that CAD:USD conversion ratio remained at 1:1 for the years presented.

1 For the purpose of the graph, it was assumed that CAD:USD conversion ratio remained at 1:1 for the years presented.

January 1,

2013

January 1,

100.00

2013

100.00

100.00

100.00

100.00

100.00

2013

110.93

2013

112.99

110.93

126.35

112.99

126.35

December 31,

December 31,

2015

116.80

2015

114.53

116.80

121.45

114.53

121.45

2014

146.76

2014

124.92

146.76

158.17

124.92

158.17

2016

149.53

2016

138.67

149.53

158.82

138.67

158.82

2017

136.37

2017

151.28

136.37

163.06

151.28

163.06

50

50

51

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL 
CONDITIONS AND RESULTS OF OPERATIONS

INTRODUCTION

The following discussion and analysis of our financial condition and results of operations is based on and 
should be read in conjunction with "Forward-Looking Information", Part I. Item 1A. Risk Factors and our 
consolidated financial statements and the accompanying notes included in Part II. Item 8. Financial 
Statements and Supplementary Data of this Annual Report on Form 10-K. 

We are a Canadian company and a North American leader in delivering energy. As a transporter of 
energy, we operate, in Canada and the United States, the world’s longest crude oil and liquids 
transportation system. Following the combination of Enbridge and Spectra Energy Corp. (Spectra Energy) 
through a stock-for-stock merger transaction on February 27, 2017 (the Merger Transaction), we are also 
a leader in the natural gas transmission and midstream business moving approximately 20% of all natural 
gas in the United States, serving key supply basins and markets. As a distributor of energy, we own and 
operate Canada’s largest natural gas distribution company and provide distribution services in Ontario, 
Quebec and New Brunswick. As a generator of energy, we have interests in approximately 3,500 
megawatts (MW) (2,500 MW net) of renewable and alternative energy generating capacity which is 
operating, secured or under construction, and we continue to expand our interests in wind, solar and 
geothermal power.

DOMESTIC ISSUER REPORTING REQUIREMENTS

Effective January 1, 2018, we began to comply with the Securities and Exchange Commission reporting 
requirements applicable to United States domestic issuers and, accordingly, we are filing our annual 
report on Form 10-K for the year ended December 31, 2017 and regular periodic reports under both 
Canadian and United States law thereafter. 

MERGER WITH SPECTRA ENERGY

On February 27, 2017, we announced the closing of the Merger Transaction.

Under the terms of the Merger Transaction, Spectra Energy shareholders received 0.984 shares of 
Enbridge for each share of Spectra Energy common stock they held. Upon closing of the Merger 
Transaction, Enbridge shareholders owned approximately 57% of the combined company and Spectra 
Energy shareholders owned approximately 43%.

Spectra Energy, which we now wholly-own, is one of North America’s leading natural gas delivery 
companies owning and operating a large, diversified and complementary portfolio of gas transmission, 
midstream gathering and processing and distribution assets. Spectra Energy also owns and operates a 
crude oil pipeline system that connects Canadian and United States producers to refineries in the United 
States Rocky Mountain and Midwest regions. Our combination with Spectra Energy has created the 
largest energy infrastructure company in North America with an extensive portfolio of energy assets that 
are well positioned to serve key supply basins and end use markets and multiple business platforms 
through which to drive future growth.

A more detailed description of each of the businesses and underlying assets acquired through the Merger 
Transaction is provided under Part I. Item 1. Business. The results of operations from assets acquired 
through the Merger Transaction are included in our financial statements and in this management's 
discussion and analysis (MD&A) on a prospective basis from the closing date of the Merger Transaction.

Subsequent to the completion of the Merger Transaction, our activities continue to be carried out through 

five business segments: Liquids Pipelines; Gas Transmission and Midstream (previously known as Gas 

Pipelines and Processing); Gas Distribution; Green Power and Transmission; and Energy Services. 

Effective February 27, 2017, as a result of the Merger Transaction:

• 

Liquids Pipelines also includes results from the operation of the Express-Platte System;

•  Gas Transmission and Midstream also includes Spectra Energy’s United States Storage and 

Transmission Assets, Canadian Pipeline & Field Services, Canadian Gas Transmission and 

Midstream and Maritimes & Northeast U.S. and Canada businesses, as well as the results of the 

Company’s 50% interest in DCP Midstream, LLC (DCP Midstream); and

•  Gas Distribution also includes results from the operation of Union Gas Limited (Union Gas).

UNITED STATES TAX REFORM

On December 22, 2017, the United States enacted the “Tax Cuts and Jobs Act” (TCJA). Substantially all 

of the provisions in the TCJA are effective for taxation years beginning after December 31, 2017. The 

TCJA includes significant changes to the Internal Revenue Code of 1986 (as amended, the Code), 

including amendments which significantly change the taxation of individuals and business entities, and 

includes specific provisions related to regulated public utilities which includes our various regulated gas 

pipeline businesses. The most significant changes that impact us, included in the TCJA, are reductions in 

the corporate federal income tax rate from 35% to 21%, and several technical provisions including, 

among others, a onetime deemed repatriation or “toll” tax on undistributed earnings and profits of US 

controlled foreign affiliates, including Canadian subsidiaries. The specific provisions related to regulated 

public utilities in the TCJA generally allow for the continued deductibility of interest expense, the 

elimination of full expensing for tax purposes of certain property acquired after September 27, 2017, and 

the continuance of certain rate normalization requirements for accelerated depreciation benefits. For 

other operations, immediate full expensing of capital expenditures placed into service after September 27, 

2017 and before January 1, 2023 (before January 1, 2024 for qualified long production period property) 

will be available under the TCJA. Inversely to the regulated public utility operations, interest deductions 

will be more restrictive for other operations as existing interest expense limitations are broadened to apply 

to all interest paid and the allowable deduction is reduced from 50% to 30% of adjusted taxable income.

Changes in the Code from the TCJA had a material impact on our consolidated financial statements as at 

and for the year ended December 31, 2017. Under generally accepted accounting principles in the United 

States of America (U.S. GAAP), the tax effects of changes in tax laws must be recognized in the period in 

which the law is enacted, or December 22, 2017 for the TCJA. Thus, at the date of enactment, our 

deferred tax liability was re-measured based upon the new tax rate. For some of our gas pipeline entities 

with regulated cost of service rate mechanisms, the change in the deferred tax liability is offset by a 

regulatory liability. In the event of a future rate case, and subject to further regulatory guidance, we 

anticipate that the regulatory liability may be required to be amortized over the remaining useful life of the 

affected assets and would be one of many factors to be considered in establishing go forward rates. For 

all other operations, the change in the deferred tax liability is recorded as an adjustment to our deferred 

tax provision.

While certain elements of the TCJA require clarification through more detailed regulation or interpretive 

guidance, based on the information and guidance available and our analysis (including computations of 

income tax effects) completed to date, at this time, we do not expect that the TCJA will have a material 

economic impact on us going forward.

For additional information, refer to Item 8. Financial Statements and Supplementary Data - Note 24. 

Income Taxes.

52

53

 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL 

CONDITIONS AND RESULTS OF OPERATIONS

INTRODUCTION

The following discussion and analysis of our financial condition and results of operations is based on and 

should be read in conjunction with "Forward-Looking Information", Part I. Item 1A. Risk Factors and our 

consolidated financial statements and the accompanying notes included in Part II. Item 8. Financial 

Statements and Supplementary Data of this Annual Report on Form 10-K. 

We are a Canadian company and a North American leader in delivering energy. As a transporter of 

energy, we operate, in Canada and the United States, the world’s longest crude oil and liquids 

transportation system. Following the combination of Enbridge and Spectra Energy Corp. (Spectra Energy) 

through a stock-for-stock merger transaction on February 27, 2017 (the Merger Transaction), we are also 

a leader in the natural gas transmission and midstream business moving approximately 20% of all natural 

gas in the United States, serving key supply basins and markets. As a distributor of energy, we own and 

operate Canada’s largest natural gas distribution company and provide distribution services in Ontario, 

Quebec and New Brunswick. As a generator of energy, we have interests in approximately 3,500 

megawatts (MW) (2,500 MW net) of renewable and alternative energy generating capacity which is 

operating, secured or under construction, and we continue to expand our interests in wind, solar and 

geothermal power.

DOMESTIC ISSUER REPORTING REQUIREMENTS

Effective January 1, 2018, we began to comply with the Securities and Exchange Commission reporting 

requirements applicable to United States domestic issuers and, accordingly, we are filing our annual 

report on Form 10-K for the year ended December 31, 2017 and regular periodic reports under both 

Canadian and United States law thereafter. 

MERGER WITH SPECTRA ENERGY

On February 27, 2017, we announced the closing of the Merger Transaction.

Under the terms of the Merger Transaction, Spectra Energy shareholders received 0.984 shares of 

Enbridge for each share of Spectra Energy common stock they held. Upon closing of the Merger 

Transaction, Enbridge shareholders owned approximately 57% of the combined company and Spectra 

Energy shareholders owned approximately 43%.

Spectra Energy, which we now wholly-own, is one of North America’s leading natural gas delivery 

companies owning and operating a large, diversified and complementary portfolio of gas transmission, 

midstream gathering and processing and distribution assets. Spectra Energy also owns and operates a 

crude oil pipeline system that connects Canadian and United States producers to refineries in the United 

States Rocky Mountain and Midwest regions. Our combination with Spectra Energy has created the 

largest energy infrastructure company in North America with an extensive portfolio of energy assets that 

are well positioned to serve key supply basins and end use markets and multiple business platforms 

through which to drive future growth.

A more detailed description of each of the businesses and underlying assets acquired through the Merger 

Transaction is provided under Part I. Item 1. Business. The results of operations from assets acquired 

through the Merger Transaction are included in our financial statements and in this management's 

discussion and analysis (MD&A) on a prospective basis from the closing date of the Merger Transaction.

Subsequent to the completion of the Merger Transaction, our activities continue to be carried out through 
five business segments: Liquids Pipelines; Gas Transmission and Midstream (previously known as Gas 
Pipelines and Processing); Gas Distribution; Green Power and Transmission; and Energy Services. 
Effective February 27, 2017, as a result of the Merger Transaction:

• 
Liquids Pipelines also includes results from the operation of the Express-Platte System;
•  Gas Transmission and Midstream also includes Spectra Energy’s United States Storage and 
Transmission Assets, Canadian Pipeline & Field Services, Canadian Gas Transmission and 
Midstream and Maritimes & Northeast U.S. and Canada businesses, as well as the results of the 
Company’s 50% interest in DCP Midstream, LLC (DCP Midstream); and

•  Gas Distribution also includes results from the operation of Union Gas Limited (Union Gas).

UNITED STATES TAX REFORM

On December 22, 2017, the United States enacted the “Tax Cuts and Jobs Act” (TCJA). Substantially all 
of the provisions in the TCJA are effective for taxation years beginning after December 31, 2017. The 
TCJA includes significant changes to the Internal Revenue Code of 1986 (as amended, the Code), 
including amendments which significantly change the taxation of individuals and business entities, and 
includes specific provisions related to regulated public utilities which includes our various regulated gas 
pipeline businesses. The most significant changes that impact us, included in the TCJA, are reductions in 
the corporate federal income tax rate from 35% to 21%, and several technical provisions including, 
among others, a onetime deemed repatriation or “toll” tax on undistributed earnings and profits of US 
controlled foreign affiliates, including Canadian subsidiaries. The specific provisions related to regulated 
public utilities in the TCJA generally allow for the continued deductibility of interest expense, the 
elimination of full expensing for tax purposes of certain property acquired after September 27, 2017, and 
the continuance of certain rate normalization requirements for accelerated depreciation benefits. For 
other operations, immediate full expensing of capital expenditures placed into service after September 27, 
2017 and before January 1, 2023 (before January 1, 2024 for qualified long production period property) 
will be available under the TCJA. Inversely to the regulated public utility operations, interest deductions 
will be more restrictive for other operations as existing interest expense limitations are broadened to apply 
to all interest paid and the allowable deduction is reduced from 50% to 30% of adjusted taxable income.

Changes in the Code from the TCJA had a material impact on our consolidated financial statements as at 
and for the year ended December 31, 2017. Under generally accepted accounting principles in the United 
States of America (U.S. GAAP), the tax effects of changes in tax laws must be recognized in the period in 
which the law is enacted, or December 22, 2017 for the TCJA. Thus, at the date of enactment, our 
deferred tax liability was re-measured based upon the new tax rate. For some of our gas pipeline entities 
with regulated cost of service rate mechanisms, the change in the deferred tax liability is offset by a 
regulatory liability. In the event of a future rate case, and subject to further regulatory guidance, we 
anticipate that the regulatory liability may be required to be amortized over the remaining useful life of the 
affected assets and would be one of many factors to be considered in establishing go forward rates. For 
all other operations, the change in the deferred tax liability is recorded as an adjustment to our deferred 
tax provision.

While certain elements of the TCJA require clarification through more detailed regulation or interpretive 
guidance, based on the information and guidance available and our analysis (including computations of 
income tax effects) completed to date, at this time, we do not expect that the TCJA will have a material 
economic impact on us going forward.

For additional information, refer to Item 8. Financial Statements and Supplementary Data - Note 24. 
Income Taxes.

52

53

 
UNITED STATES SPONSORED VEHICLE STRATEGY

In 2017, we continued the ongoing evaluation of our investment in our United States sponsored vehicles, 
and alternatives to such investment, and we completed or announced certain strategic reviews and 
transactions. We intend to review our United States sponsored vehicle strategy on a continuing basis. 
From time to time, we may formulate plans or proposals with respect to such matters and hold 
discussions with or make formal proposals to the board of directors of the sponsored vehicles or other 
third parties. These plans or proposals may, subject to price, market and general economic and fiscal 
conditions and other factors, include potential consolidations, acquisition or sale of assets or securities, 
changes to capital structure or other transactions.

On April 28, 2017, we announced the completion of a strategic review of Enbridge Energy Partners, L.P. 
(EEP). The following actions, together with the measures announced in January 2017 and disclosed in 
our 2016 annual MD&A, have been taken to date to enhance EEP’s value proposition to its unitholders 
and to us:

Acquisition of Midcoast Assets and Privatization of Midcoast Energy Partners, L.P.
On April 27, 2017, we completed our previously-announced merger through which we privatized Midcoast 
Energy Partners, L.P. (MEP) by acquiring all of the outstanding publicly-held common units of MEP, 
through a wholly-owned subsidiary, for total consideration of approximately US$170 million.

On June 28, 2017, through a wholly-owned subsidiary, we acquired all of EEP’s interest in the MEP gas 
gathering and processing business for cash consideration of US$1.3 billion plus existing indebtedness of 
MEP of US$953 million.

As a result of the above transactions, we now own 100% of the MEP gas gathering and processing 
business. 

Finalization of Bakken Pipeline System Joint Funding Agreement
On February 15, 2017, EEP acquired an effective 27.6% interest in the Dakota Access and Energy 
Transfer Crude Oil Pipelines (collectively, the Bakken Pipeline System). On April 27, 2017, we entered 
into a joint funding arrangement with EEP whereby we own 75% and EEP owns 25% of the combined 
27.6% effective interest in the Bakken Pipeline System (our jointly held interest). Under this arrangement, 
EEP has retained a five-year option to acquire from us an additional 20% interest of the jointly held 
interest. On finalization of this joint funding arrangement, EEP repaid the outstanding balance on its US
$1.5 billion credit agreement with us, which it had drawn upon to fund the initial purchase.

EEP Strategic Restructuring Actions
On April 27, 2017, EEP redeemed all of its outstanding Series 1 Preferred Units held by us at face value 
of US$1.2 billion through the issuance of 64.3 million Class A common units to us. Further, we irrevocably 
waived all of our rights associated with our ownership of 66.1 million Class D units and 1,000 Incentive 
Distribution Units (IDUs) of EEP, in exchange for the issuance of 1,000 Class F units. The Class F units 
are entitled to (i) 13% of all distributions in excess of US$0.295 per EEP unit, but equal to or less than US
$0.35 per EEP unit, and (ii) 23% of all distributions in excess of US$0.35 per EEP unit. The irrevocable 
waiver was effective with respect to distributions declared with a record date after April 27, 2017. In 
connection with these strategic restructuring actions, EEP reduced its quarterly distribution from US
$0.583 per unit to US$0.35 per unit.

The irrevocable waiver of the Class D units and IDUs, the redemption of the Series 1 Preferred Units and 
the reduction in the quarterly distributions will result in a lower contribution of earnings from EEP. This 
lower contribution will be partially offset by an increased contribution of earnings as a result of our 
increased ownership in the Class A common units post restructuring.

Restructuring of SEP Incentive Distribution Rights

On January 22, 2018, Enbridge and Spectra Energy Partners, LP (SEP) announced the execution of a 

definitive agreement, resulting in us converting all of our incentive distribution rights (IDRs) and general 

partner economic interests in SEP into 172.5 million newly issued SEP common units. As part of the 

transaction, all of the IDRs have been eliminated. We now hold a non-economic general partner interest 

in SEP and own approximately 403 million of SEP common units, representing approximately 83% of 

SEP's outstanding common units. 

ASSET MONETIZATION

In conjunction with the announcement of the Merger Transaction in September 2016, we announced our 

intention to divest $2 billion of assets over the ensuing 12 months in order to further strengthen our post-

combination balance sheet and enhance the financial flexibility of the combined entity. With the 

completion of the Secondary Offering noted below, the Ozark pipeline system sale, the Olympic refined 

products pipeline sale and other divestitures completed in 2016 and previously disclosed, we exceeded 

the $2 billion monetization target established on announcement of the Merger Transaction.

On April 18, 2017, Enbridge Income Fund Holdings Inc. (ENF) completed a secondary offering of 

17,347,750 ENF common shares to the public at a price of $33.15 per share, for gross proceeds to us of 

approximately $0.6 billion (the Secondary Offering). To effect the Secondary Offering, we exchanged 

21,657,617 Enbridge Income Fund (Fund) units we owned for an equivalent amount of ENF common 

shares. In order to maintain our 19.9% ownership interest in ENF, we retained 4,309,867 of the common 

shares we received in the exchange, and sold the balance to the public through the Secondary Offering. 

We used the proceeds from the Secondary Offering to pay down short-term debt, pending reinvestment in 

our growing portfolio of secured projects. Upon closing of the Secondary Offering, our total economic 

interest in ENF decreased from 86.9% to 84.6%.

On November 29, 2017, we finalized our 2018-2020 Strategic Plan and announced that we have 

identified a further $10 billion of non-core assets, of which a minimum of $3 billion we intend to sell or 

monetize in 2018. As a result of the announcement, we are in the process of selling certain assets within 

the US Midstream business of our Gas Transmission and Midstream segment. Refer to Item 8. Financial 

Statements and Supplementary Data - Note 7. Acquisitions and Dispositions.

ALBERTA CLIPPER (LINE 67) PRESIDENTIAL PERMIT

On October 16, 2017, we received a Presidential permit for Line 67, following a nearly five-year process 

of review. Line 67 currently operates under an existing Presidential permit that was issued by the State 

Department in 2009 and the 2017 Presidential permit authorizes us to fully utilize Line 67's capacity 

across the United States/Canada border.

Line 67 is a key component of our mainline system, which United States refineries rely on to provide vital 

products to consumers across the Midwest United States. 

For additional information on Line 67, refer to Growth Projects - Commercially Secured Projects - Liquids 

Pipelines - Lakehead System Mainline Expansion.

54

55

 
UNITED STATES SPONSORED VEHICLE STRATEGY

In 2017, we continued the ongoing evaluation of our investment in our United States sponsored vehicles, 

and alternatives to such investment, and we completed or announced certain strategic reviews and 

transactions. We intend to review our United States sponsored vehicle strategy on a continuing basis. 

From time to time, we may formulate plans or proposals with respect to such matters and hold 

discussions with or make formal proposals to the board of directors of the sponsored vehicles or other 

third parties. These plans or proposals may, subject to price, market and general economic and fiscal 

conditions and other factors, include potential consolidations, acquisition or sale of assets or securities, 

changes to capital structure or other transactions.

On April 28, 2017, we announced the completion of a strategic review of Enbridge Energy Partners, L.P. 

(EEP). The following actions, together with the measures announced in January 2017 and disclosed in 

our 2016 annual MD&A, have been taken to date to enhance EEP’s value proposition to its unitholders 

and to us:

Acquisition of Midcoast Assets and Privatization of Midcoast Energy Partners, L.P.

On April 27, 2017, we completed our previously-announced merger through which we privatized Midcoast 

Energy Partners, L.P. (MEP) by acquiring all of the outstanding publicly-held common units of MEP, 

through a wholly-owned subsidiary, for total consideration of approximately US$170 million.

On June 28, 2017, through a wholly-owned subsidiary, we acquired all of EEP’s interest in the MEP gas 

gathering and processing business for cash consideration of US$1.3 billion plus existing indebtedness of 

MEP of US$953 million.

business. 

As a result of the above transactions, we now own 100% of the MEP gas gathering and processing 

Finalization of Bakken Pipeline System Joint Funding Agreement

On February 15, 2017, EEP acquired an effective 27.6% interest in the Dakota Access and Energy 

Transfer Crude Oil Pipelines (collectively, the Bakken Pipeline System). On April 27, 2017, we entered 

into a joint funding arrangement with EEP whereby we own 75% and EEP owns 25% of the combined 

27.6% effective interest in the Bakken Pipeline System (our jointly held interest). Under this arrangement, 

EEP has retained a five-year option to acquire from us an additional 20% interest of the jointly held 

interest. On finalization of this joint funding arrangement, EEP repaid the outstanding balance on its US

$1.5 billion credit agreement with us, which it had drawn upon to fund the initial purchase.

EEP Strategic Restructuring Actions

On April 27, 2017, EEP redeemed all of its outstanding Series 1 Preferred Units held by us at face value 

of US$1.2 billion through the issuance of 64.3 million Class A common units to us. Further, we irrevocably 

waived all of our rights associated with our ownership of 66.1 million Class D units and 1,000 Incentive 

Distribution Units (IDUs) of EEP, in exchange for the issuance of 1,000 Class F units. The Class F units 

are entitled to (i) 13% of all distributions in excess of US$0.295 per EEP unit, but equal to or less than US

$0.35 per EEP unit, and (ii) 23% of all distributions in excess of US$0.35 per EEP unit. The irrevocable 

waiver was effective with respect to distributions declared with a record date after April 27, 2017. In 

connection with these strategic restructuring actions, EEP reduced its quarterly distribution from US

$0.583 per unit to US$0.35 per unit.

The irrevocable waiver of the Class D units and IDUs, the redemption of the Series 1 Preferred Units and 

the reduction in the quarterly distributions will result in a lower contribution of earnings from EEP. This 

lower contribution will be partially offset by an increased contribution of earnings as a result of our 

increased ownership in the Class A common units post restructuring.

Restructuring of SEP Incentive Distribution Rights
On January 22, 2018, Enbridge and Spectra Energy Partners, LP (SEP) announced the execution of a 
definitive agreement, resulting in us converting all of our incentive distribution rights (IDRs) and general 
partner economic interests in SEP into 172.5 million newly issued SEP common units. As part of the 
transaction, all of the IDRs have been eliminated. We now hold a non-economic general partner interest 
in SEP and own approximately 403 million of SEP common units, representing approximately 83% of 
SEP's outstanding common units. 

ASSET MONETIZATION

In conjunction with the announcement of the Merger Transaction in September 2016, we announced our 
intention to divest $2 billion of assets over the ensuing 12 months in order to further strengthen our post-
combination balance sheet and enhance the financial flexibility of the combined entity. With the 
completion of the Secondary Offering noted below, the Ozark pipeline system sale, the Olympic refined 
products pipeline sale and other divestitures completed in 2016 and previously disclosed, we exceeded 
the $2 billion monetization target established on announcement of the Merger Transaction.

On April 18, 2017, Enbridge Income Fund Holdings Inc. (ENF) completed a secondary offering of 
17,347,750 ENF common shares to the public at a price of $33.15 per share, for gross proceeds to us of 
approximately $0.6 billion (the Secondary Offering). To effect the Secondary Offering, we exchanged 
21,657,617 Enbridge Income Fund (Fund) units we owned for an equivalent amount of ENF common 
shares. In order to maintain our 19.9% ownership interest in ENF, we retained 4,309,867 of the common 
shares we received in the exchange, and sold the balance to the public through the Secondary Offering. 
We used the proceeds from the Secondary Offering to pay down short-term debt, pending reinvestment in 
our growing portfolio of secured projects. Upon closing of the Secondary Offering, our total economic 
interest in ENF decreased from 86.9% to 84.6%.

On November 29, 2017, we finalized our 2018-2020 Strategic Plan and announced that we have 
identified a further $10 billion of non-core assets, of which a minimum of $3 billion we intend to sell or 
monetize in 2018. As a result of the announcement, we are in the process of selling certain assets within 
the US Midstream business of our Gas Transmission and Midstream segment. Refer to Item 8. Financial 
Statements and Supplementary Data - Note 7. Acquisitions and Dispositions.

ALBERTA CLIPPER (LINE 67) PRESIDENTIAL PERMIT

On October 16, 2017, we received a Presidential permit for Line 67, following a nearly five-year process 
of review. Line 67 currently operates under an existing Presidential permit that was issued by the State 
Department in 2009 and the 2017 Presidential permit authorizes us to fully utilize Line 67's capacity 
across the United States/Canada border.

Line 67 is a key component of our mainline system, which United States refineries rely on to provide vital 
products to consumers across the Midwest United States. 

For additional information on Line 67, refer to Growth Projects - Commercially Secured Projects - Liquids 
Pipelines - Lakehead System Mainline Expansion.

54

55

 
CANADIAN RESTRUCTURING PLAN

Effective September 1, 2015, under an agreement with the Fund and ENF, Enbridge transferred its 
Canadian Liquids Pipelines business, held by Enbridge Pipelines Inc. (EPI) and Enbridge Pipelines 
(Athabasca) Inc. (EPAI), and certain Canadian renewable energy assets to the Fund Group (comprising 
the Fund, Enbridge Commercial Trust, Enbridge Income Partners LP (EIPLP) and the subsidiaries of 
EIPLP) for consideration valued at $30.4 billion plus incentive distribution and performance rights (the 
Canadian Restructuring Plan). The consideration that we received included $18.7 billion of units in the 
Fund Group, comprised of $3 billion of Fund units and $15.7 billion of equity units of EIPLP, in which the 
Fund has an interest. The Fund Group also assumed debt of EPI and EPAI of approximately $11.7 billion.

RESULTS OF OPERATIONS

(millions of Canadian dollars, except per share amounts)
Segment earnings before interest, income taxes and
depreciation and amortization

Liquids Pipelines
Gas Transmission and Midstream
Gas Distribution
Green Power and Transmission
Energy Services
Eliminations and Other

Depreciation and amortization
Interest expense
Income tax recovery/(expense)
(Earnings)/loss attributable to noncontrolling interests and

redeemable noncontrolling interests

Preference share dividends
Earnings/(loss) attributable to common shareholders
Earnings/(loss) per common share
Diluted earnings/(loss) per common share

Year ended
December 31,

2017

2016

2015

6,395
(1,269)
1,390
372
(263)
(337)

(3,163)
(2,556)
2,697

(407)
(330)
2,529
1.66
1.65

4,926
464
831
344
(183)
(101)

(2,240)
(1,590)
(142)

(240)
(293)
1,776
1.95
1.93

3,033
43
763
363
324
(867)

(2,024)
(1,624)
(170)

410
(288)
(37)
(0.04)
(0.04)

EARNINGS/(LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS

Year ended December 31, 2017 compared with year ended December 31, 2016 

Earnings Attributable to Common Shareholders for the year ended December 31, 2017 were positively 

impacted by contributions of approximately $2,574 million from new assets following the completion of the 

Merger Transaction.

After taking into consideration the contribution of additional earnings from the Merger Transaction, 

Earnings Attributable to Common Shareholders decreased by $151 million due to certain unusual, 

infrequent or other factors, primarily explained by the following:

• 

a loss of $4,391 million ($2,753 million after-tax attributable to us) and related goodwill 

impairment of $102 million resulting from the classification of certain assets as held for sale and 

the subsequent measurement at the lower of their carrying value or fair value less costs to sell, 

refer to Item 8. Financial Statements and Supplementary Data - Note 7. Acquisitions and 

Dispositions;

• 

employee severance and restructuring costs of $354 million ($273 million after-tax attributable to 

us) in 2017, compared with $82 million in the corresponding 2016 period, related to a corporate 

reorganization initiative and the Merger Transaction, refer to Merger with Spectra Energy;

• 

project development and transaction costs of $205 million ($155 after-tax attributable to us) in 

2017, compared with $86 million in the corresponding 2016 period, related to the Merger 

Transaction, refer to Merger with Spectra Energy;

• 

the absence of a gain of $850 million ($520 million after-tax attributable to us) recorded in 2016 

related to the disposition of the South Prairie Region assets, as discussed below; partially offset 

by

Income Taxes;

• 

a non-cash, $1,936 million income tax benefit ($2,045 million federal tax recovery net of a $109 

million state deferred tax expense) due to the enactment of the TCJA by the United States in 

December 2017, refer to Item 8. Financial Statements and Supplementary Data - Note 24. 

• 

a non-cash, unrealized derivative fair value gain of $1,109 million in 2017 ($624 million after-tax 

attributable to us), compared with $543 million ($459 million after-tax attributable to us) in the 

corresponding 2016 period reflecting net fair value gains and losses arising from changes in the 

mark-to-market value of derivative financial instruments used to manage foreign exchange and 

commodity prices risks; and

• 

the absence of cumulative asset impairment charges of $1,561 million ($456 million after-tax 

attributable to us) recorded in 2016 related to EEP's Sandpiper Project, the Northern Gateway 

Project and Eddystone Rail, as discussed below.

We have a comprehensive long-term economic hedging program to mitigate interest rate, foreign 

exchange and commodity price risks which creates volatility in short-term earnings through the 

recognition of unrealized non-cash gains and losses on financial derivative instruments used to hedge 

these risks. Over the long term, we believe our hedging program supports the reliable cash flows and 

dividend growth upon which our investors value proposition is based. 

After taking into consideration the factors above, the remaining $1,670 million decrease is primarily 

explained by the following significant business factors:

increased depreciation and amortization expense primarily resulting from a significant number of 

new assets placed into service in 2017;

increased interest expense primarily resulting from the settlement of certain pre-issuance hedges;

increased earnings attributable to noncontrolling interests and redeemable noncontrolling 

interests in 2017, compared with the corresponding 2016 period. The increase was driven by 

higher earnings attributable to noncontrolling interests in EEP during 2017 as a result of the EEP 

• 

• 

• 

strategic restructuring actions;

56

57

 
 
 
CANADIAN RESTRUCTURING PLAN

Effective September 1, 2015, under an agreement with the Fund and ENF, Enbridge transferred its 

Canadian Liquids Pipelines business, held by Enbridge Pipelines Inc. (EPI) and Enbridge Pipelines 

(Athabasca) Inc. (EPAI), and certain Canadian renewable energy assets to the Fund Group (comprising 

the Fund, Enbridge Commercial Trust, Enbridge Income Partners LP (EIPLP) and the subsidiaries of 

EIPLP) for consideration valued at $30.4 billion plus incentive distribution and performance rights (the 

Canadian Restructuring Plan). The consideration that we received included $18.7 billion of units in the 

Fund Group, comprised of $3 billion of Fund units and $15.7 billion of equity units of EIPLP, in which the 

Fund has an interest. The Fund Group also assumed debt of EPI and EPAI of approximately $11.7 billion.

RESULTS OF OPERATIONS

(millions of Canadian dollars, except per share amounts)

Segment earnings before interest, income taxes and

depreciation and amortization

Liquids Pipelines

Gas Transmission and Midstream

Gas Distribution

Green Power and Transmission

Energy Services

Eliminations and Other

Depreciation and amortization

Interest expense

Income tax recovery/(expense)

(Earnings)/loss attributable to noncontrolling interests and

redeemable noncontrolling interests

Preference share dividends

Earnings/(loss) attributable to common shareholders

Earnings/(loss) per common share

Diluted earnings/(loss) per common share

Year ended

December 31,

2017

2016

2015

6,395

(1,269)

1,390

372

(263)

(337)

(3,163)

(2,556)

2,697

(407)

(330)

2,529

1.66

1.65

4,926

3,033

464

831

344

(183)

(101)

(2,240)

(1,590)

(142)

(240)

(293)

1,776

1.95

1.93

43

763

363

324

(867)

(2,024)

(1,624)

(170)

410

(288)

(37)

(0.04)

(0.04)

EARNINGS/(LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS

Year ended December 31, 2017 compared with year ended December 31, 2016 

Earnings Attributable to Common Shareholders for the year ended December 31, 2017 were positively 
impacted by contributions of approximately $2,574 million from new assets following the completion of the 
Merger Transaction.

After taking into consideration the contribution of additional earnings from the Merger Transaction, 
Earnings Attributable to Common Shareholders decreased by $151 million due to certain unusual, 
infrequent or other factors, primarily explained by the following:

• 

• 

• 

• 

• 

• 

• 

a loss of $4,391 million ($2,753 million after-tax attributable to us) and related goodwill 
impairment of $102 million resulting from the classification of certain assets as held for sale and 
the subsequent measurement at the lower of their carrying value or fair value less costs to sell, 
refer to Item 8. Financial Statements and Supplementary Data - Note 7. Acquisitions and 
Dispositions;
employee severance and restructuring costs of $354 million ($273 million after-tax attributable to 
us) in 2017, compared with $82 million in the corresponding 2016 period, related to a corporate 
reorganization initiative and the Merger Transaction, refer to Merger with Spectra Energy;
project development and transaction costs of $205 million ($155 after-tax attributable to us) in 
2017, compared with $86 million in the corresponding 2016 period, related to the Merger 
Transaction, refer to Merger with Spectra Energy;
the absence of a gain of $850 million ($520 million after-tax attributable to us) recorded in 2016 
related to the disposition of the South Prairie Region assets, as discussed below; partially offset 
by
a non-cash, $1,936 million income tax benefit ($2,045 million federal tax recovery net of a $109 
million state deferred tax expense) due to the enactment of the TCJA by the United States in 
December 2017, refer to Item 8. Financial Statements and Supplementary Data - Note 24. 
Income Taxes;
a non-cash, unrealized derivative fair value gain of $1,109 million in 2017 ($624 million after-tax 
attributable to us), compared with $543 million ($459 million after-tax attributable to us) in the 
corresponding 2016 period reflecting net fair value gains and losses arising from changes in the 
mark-to-market value of derivative financial instruments used to manage foreign exchange and 
commodity prices risks; and
the absence of cumulative asset impairment charges of $1,561 million ($456 million after-tax 
attributable to us) recorded in 2016 related to EEP's Sandpiper Project, the Northern Gateway 
Project and Eddystone Rail, as discussed below.

We have a comprehensive long-term economic hedging program to mitigate interest rate, foreign 
exchange and commodity price risks which creates volatility in short-term earnings through the 
recognition of unrealized non-cash gains and losses on financial derivative instruments used to hedge 
these risks. Over the long term, we believe our hedging program supports the reliable cash flows and 
dividend growth upon which our investors value proposition is based. 

After taking into consideration the factors above, the remaining $1,670 million decrease is primarily 
explained by the following significant business factors:

• 

• 
• 

increased depreciation and amortization expense primarily resulting from a significant number of 
new assets placed into service in 2017;
increased interest expense primarily resulting from the settlement of certain pre-issuance hedges;
increased earnings attributable to noncontrolling interests and redeemable noncontrolling 
interests in 2017, compared with the corresponding 2016 period. The increase was driven by 
higher earnings attributable to noncontrolling interests in EEP during 2017 as a result of the EEP 
strategic restructuring actions;

56

57

 
 
 
• 

• 

• 
• 

the absence of earnings from certain assets that were divested since the third quarter of 2016; 
partially offset by
strong contributions from our Liquids Pipelines segment due to higher throughput primarily 
attributable to capacity optimization initiatives implemented in 2017 which significantly reduced 
heavy crude oil apportionment allowing incremental heavy crude oil barrels to be shipped; 
contributions from new Liquids Pipelines assets placed into service in 2017; and
increased earnings from our Gas Transmission and Midstream segment in 2017 due to favorable 
seasonal firm revenue and a full year of contributions from assets acquired in 2016.

Lower earnings per common share for 2017, compared with the corresponding 2016 period, is primarily 
due to the increase in common shares from the issuance of approximately 33 million common shares in 
December 2017 in a private placement offering, the issuance of approximately 691 million common 
shares in February 2017 as part of the consideration for the Merger Transaction, the issuance of 
approximately 75 million common shares in 2016 through the public offering of 56 million common shares 
in the first quarter of 2016, and ongoing quarterly issuances under our Dividend Reinvestment Program. 
Additional earnings from the assets acquired in the Merger Transaction were offset by certain unusual, 
infrequent or other factors, as discussed above.

Year ended December 31, 2016 compared with year ended December 31, 2015 

Earnings Attributable to Common Shareholders increased by $1,601 million due to certain unusual, 
infrequent or other factors, primarily explained by the following:

• 

• 

• 

• 

• 

• 

a gain of $850 million ($520 million after-tax attributable to us) within the Liquids Pipelines 
segment related to the disposition of the South Prairie Region assets in December 2016;
a non-cash, unrealized derivative fair value gain of $543 million in 2016, compared with a $2,017 
million unrealized derivative fair value loss in the corresponding 2015 period reflecting net fair 
value gains and losses arising from changes in the mark-to-market value of derivative financial 
instruments used to manage foreign exchange and commodity price risks;
the absence of a goodwill impairment charge of $440 million ($167 million after-tax attributable to 
us) recognized in the second quarter of 2015 related to EEP’s natural gas and natural gas liquids 
(NGL) businesses as a result of the prolonged decline in commodity prices which reduced 
producers’ expected drilling programs and negatively impacted volumes on EEP’s natural gas 
and NGL pipelines and processing systems; partially offset by
an impairment charge of $1,004 million ($81 million after-tax attributable to us) in 2016, including 
related project costs, on EEP's Sandpiper Project resulting from the withdrawal of regulatory 
applications for the project in September 2016 that were pending with the Minnesota Public 
Utilities Commission (MNPUC);
an impairment charge of $373 million ($272 million after-tax attributable to us) related to the 
Northern Gateway Project recorded in the fourth quarter of 2016, after the Canadian Federal 
Government directed the National Energy Board (NEB) to dismiss our Northern Gateway Project 
application and rescind the Certificates of Public Convenience and Necessity for the project; and
an impairment charge of $184 million ($108 million after-tax attributable to us) recorded in 2016 
related to our 75% joint venture interest in Eddystone Rail, located in the Philadelphia, 
Pennsylvania area. Demand for Eddystone Rail services declined as a result of a significant 
decrease in Bakken crude oil and West Africa/Brent crude oil and increased competition in the 
region.

After taking into consideration the factors above, the remaining $212 million increase is primarily 
explained by the following significant business factors:

• 

• 

strong contributions from our Liquids Pipelines segment which benefited from a number of new 
assets that were placed into service in 2015;
throughput growth period over period on the Canadian Mainline, Lakehead Pipeline System 
(Lakehead System) and Regional Oil Sands System primarily due to strong oil sands production 
growth in western Canada enabled by completed pipeline expansion projects;

• 

contributions from the United States Gulf Coast and Mid-Continent systems in 2016, attributable 

to increased transportation revenues mainly resulting from an increase in the level of committed 

take-or-pay volumes on the Flanagan South Pipeline (Flanagan South);

• 

contributions from Enbridge Offshore Pipelines' Heidelberg Oil Pipeline (Heidelberg Pipeline) 

which was placed into service in January 2016 and Canadian Gas Transmission and Midstream’s 

Tupper Main and Tupper West gas plants (the Tupper Plants) which were acquired on April 1, 

2016; partially offset by

• 

higher earnings attributable to noncontrolling interests and redeemable noncontrolling interests in 

2016 compared with 2015 driven by stronger operating performance at EEP as a result of 

stronger contributions from its liquids business;

• 

the impact of extreme wildfires in northeastern Alberta during the second quarter of 2016 which 

led to a temporary shutdown of certain of our upstream pipelines and terminal facilities resulting 

in a disruption of service on our Regional Oil Sands System with corresponding impacts into and 

out of our downstream pipelines, including Canadian Mainline and the Lakehead System;

• 

a combination of a lower average International Joint Tariff (IJT) Residual Benchmark Toll and a 

lower foreign exchange hedge rate period over period used to convert Canadian Mainline United 

States dollar toll revenues to Canadian dollars;

• 

the performance of the United States portion of the Bakken Pipeline System where contributions 

decreased period over period primarily due to a lower surcharge on tolls subject to annual 

adjustment; 

expiration of contracts;

NGL market; and

• 

• 

• 

lower contributions in 2016 from EEP’s Berthold rail facility as a result of declining volumes on 

the compression of certain crude oil location and quality differentials and the impact of a weaker 

depreciation and amortization expense increased period over period primarily as a result of a 

significant number of new assets placed into service in 2016.

REVENUES 

We generate revenues from three primary sources: transportation and other services, gas distribution 

sales and commodity sales. Transportation and other services revenues are earned from our crude oil 

and natural gas pipeline transportation businesses and also include power production revenues from our 

portfolio of renewable and power generation assets. For our transportation assets operating under 

market-based arrangements, revenues are driven by volumes transported and the corresponding tolls for 

transportation services. For assets operating under take-or-pay contracts, revenues reflect the terms of 

the underlying contract for services or capacity. For rate-regulated assets, revenues are charged in 

accordance with tolls established by the regulator, and in most cost-of-service based arrangements are 

reflective of our cost to provide the service plus a regulator-approved rate of return. Higher transportation 

and other services revenues reflected increased throughput on our core liquids pipeline assets combined 

with the incremental revenues associated with assets placed into service over the past two years.

Gas distribution sales revenues are recognized in a manner consistent with the underlying rate-setting 

mechanism mandated by the regulator. Revenues generated by the gas distribution businesses are 

primarily driven by volumes delivered, which vary with weather and customer composition and utilization, 

as well as regulator-approved rates. The cost of natural gas is passed through to customers through rates 

and does not ultimately impact earnings due to its flow-through nature.

Commodity sales of $26,286 million, $22,816 million and $23,842 million for the year ended 

December 31, 2017, 2016 and 2015, respectively, were generated primarily through our Energy Services 

operations. Energy Services includes the contemporaneous purchase and sale of crude oil, natural gas, 

power and NGLs to generate a margin, which is typically a small fraction of gross revenue. While sales 

revenue generated from these operations are impacted by commodity prices, net margins and earnings 

are relatively insensitive to commodity prices and reflect activity levels which are driven by differences in 

commodity prices between locations, grades and points in time, rather than on absolute prices. Any 

residual commodity margin risk is closely monitored and managed. Revenues from these operations 

58

59

• 

• 

• 

• 

• 

• 

• 

• 

the absence of earnings from certain assets that were divested since the third quarter of 2016; 

partially offset by

strong contributions from our Liquids Pipelines segment due to higher throughput primarily 

attributable to capacity optimization initiatives implemented in 2017 which significantly reduced 

heavy crude oil apportionment allowing incremental heavy crude oil barrels to be shipped; 

contributions from new Liquids Pipelines assets placed into service in 2017; and

increased earnings from our Gas Transmission and Midstream segment in 2017 due to favorable 

seasonal firm revenue and a full year of contributions from assets acquired in 2016.

Lower earnings per common share for 2017, compared with the corresponding 2016 period, is primarily 

due to the increase in common shares from the issuance of approximately 33 million common shares in 

December 2017 in a private placement offering, the issuance of approximately 691 million common 

shares in February 2017 as part of the consideration for the Merger Transaction, the issuance of 

approximately 75 million common shares in 2016 through the public offering of 56 million common shares 

in the first quarter of 2016, and ongoing quarterly issuances under our Dividend Reinvestment Program. 

Additional earnings from the assets acquired in the Merger Transaction were offset by certain unusual, 

infrequent or other factors, as discussed above.

Year ended December 31, 2016 compared with year ended December 31, 2015 

Earnings Attributable to Common Shareholders increased by $1,601 million due to certain unusual, 

infrequent or other factors, primarily explained by the following:

a gain of $850 million ($520 million after-tax attributable to us) within the Liquids Pipelines 

segment related to the disposition of the South Prairie Region assets in December 2016;

a non-cash, unrealized derivative fair value gain of $543 million in 2016, compared with a $2,017 

million unrealized derivative fair value loss in the corresponding 2015 period reflecting net fair 

value gains and losses arising from changes in the mark-to-market value of derivative financial 

instruments used to manage foreign exchange and commodity price risks;

• 

the absence of a goodwill impairment charge of $440 million ($167 million after-tax attributable to 

us) recognized in the second quarter of 2015 related to EEP’s natural gas and natural gas liquids 

(NGL) businesses as a result of the prolonged decline in commodity prices which reduced 

producers’ expected drilling programs and negatively impacted volumes on EEP’s natural gas 

and NGL pipelines and processing systems; partially offset by

• 

an impairment charge of $1,004 million ($81 million after-tax attributable to us) in 2016, including 

related project costs, on EEP's Sandpiper Project resulting from the withdrawal of regulatory 

applications for the project in September 2016 that were pending with the Minnesota Public 

Utilities Commission (MNPUC);

• 

an impairment charge of $373 million ($272 million after-tax attributable to us) related to the 

Northern Gateway Project recorded in the fourth quarter of 2016, after the Canadian Federal 

Government directed the National Energy Board (NEB) to dismiss our Northern Gateway Project 

application and rescind the Certificates of Public Convenience and Necessity for the project; and

• 

an impairment charge of $184 million ($108 million after-tax attributable to us) recorded in 2016 

related to our 75% joint venture interest in Eddystone Rail, located in the Philadelphia, 

Pennsylvania area. Demand for Eddystone Rail services declined as a result of a significant 

decrease in Bakken crude oil and West Africa/Brent crude oil and increased competition in the 

region.

After taking into consideration the factors above, the remaining $212 million increase is primarily 

explained by the following significant business factors:

strong contributions from our Liquids Pipelines segment which benefited from a number of new 

assets that were placed into service in 2015;

throughput growth period over period on the Canadian Mainline, Lakehead Pipeline System 

(Lakehead System) and Regional Oil Sands System primarily due to strong oil sands production 

growth in western Canada enabled by completed pipeline expansion projects;

• 

• 

• 

• 

• 

• 

• 

• 

• 

contributions from the United States Gulf Coast and Mid-Continent systems in 2016, attributable 
to increased transportation revenues mainly resulting from an increase in the level of committed 
take-or-pay volumes on the Flanagan South Pipeline (Flanagan South);
contributions from Enbridge Offshore Pipelines' Heidelberg Oil Pipeline (Heidelberg Pipeline) 
which was placed into service in January 2016 and Canadian Gas Transmission and Midstream’s 
Tupper Main and Tupper West gas plants (the Tupper Plants) which were acquired on April 1, 
2016; partially offset by
higher earnings attributable to noncontrolling interests and redeemable noncontrolling interests in 
2016 compared with 2015 driven by stronger operating performance at EEP as a result of 
stronger contributions from its liquids business;
the impact of extreme wildfires in northeastern Alberta during the second quarter of 2016 which 
led to a temporary shutdown of certain of our upstream pipelines and terminal facilities resulting 
in a disruption of service on our Regional Oil Sands System with corresponding impacts into and 
out of our downstream pipelines, including Canadian Mainline and the Lakehead System;
a combination of a lower average International Joint Tariff (IJT) Residual Benchmark Toll and a 
lower foreign exchange hedge rate period over period used to convert Canadian Mainline United 
States dollar toll revenues to Canadian dollars;
the performance of the United States portion of the Bakken Pipeline System where contributions 
decreased period over period primarily due to a lower surcharge on tolls subject to annual 
adjustment; 
lower contributions in 2016 from EEP’s Berthold rail facility as a result of declining volumes on 
expiration of contracts;
the compression of certain crude oil location and quality differentials and the impact of a weaker 
NGL market; and
depreciation and amortization expense increased period over period primarily as a result of a 
significant number of new assets placed into service in 2016.

REVENUES 
We generate revenues from three primary sources: transportation and other services, gas distribution 
sales and commodity sales. Transportation and other services revenues are earned from our crude oil 
and natural gas pipeline transportation businesses and also include power production revenues from our 
portfolio of renewable and power generation assets. For our transportation assets operating under 
market-based arrangements, revenues are driven by volumes transported and the corresponding tolls for 
transportation services. For assets operating under take-or-pay contracts, revenues reflect the terms of 
the underlying contract for services or capacity. For rate-regulated assets, revenues are charged in 
accordance with tolls established by the regulator, and in most cost-of-service based arrangements are 
reflective of our cost to provide the service plus a regulator-approved rate of return. Higher transportation 
and other services revenues reflected increased throughput on our core liquids pipeline assets combined 
with the incremental revenues associated with assets placed into service over the past two years.

Gas distribution sales revenues are recognized in a manner consistent with the underlying rate-setting 
mechanism mandated by the regulator. Revenues generated by the gas distribution businesses are 
primarily driven by volumes delivered, which vary with weather and customer composition and utilization, 
as well as regulator-approved rates. The cost of natural gas is passed through to customers through rates 
and does not ultimately impact earnings due to its flow-through nature.

Commodity sales of $26,286 million, $22,816 million and $23,842 million for the year ended 
December 31, 2017, 2016 and 2015, respectively, were generated primarily through our Energy Services 
operations. Energy Services includes the contemporaneous purchase and sale of crude oil, natural gas, 
power and NGLs to generate a margin, which is typically a small fraction of gross revenue. While sales 
revenue generated from these operations are impacted by commodity prices, net margins and earnings 
are relatively insensitive to commodity prices and reflect activity levels which are driven by differences in 
commodity prices between locations, grades and points in time, rather than on absolute prices. Any 
residual commodity margin risk is closely monitored and managed. Revenues from these operations 

58

59

depend on activity levels, which vary from year-to-year depending on market conditions and commodity 
prices.

• 

the absence of a gain of $850 million recorded in 2016 related to the sale of non-core South 

Prairie Region assets.

Our revenues also include changes in unrealized derivative fair value gains and losses related to foreign 
exchange and commodity price contracts used to manage exposures from movements in foreign 
exchange rates and commodity prices. The mark-to-market accounting creates volatility and impacts the 
comparability of revenues in the short-term, but we believe over the long-term, the economic hedging 
program supports reliable cash flows and dividend growth.

DIVIDENDS 
We have paid common share dividends in every year since we became a publicly traded company in 
1953. In November 2017, we announced a 10% increase in our quarterly dividend to $0.671 per common 
share, or $2.684 annualized, effective with the dividend payable on March 1, 2018.

BUSINESS SEGMENTS

Effective December 31, 2017, we changed our segment-level profit measure to EBITDA from the previous 
measure of Earnings before interest and income taxes. We also renamed the Gas Pipelines and 
Processing segment to Gas Transmission and Midstream. The presentation of the prior years' tables has 
been revised in order to align with the current presentation.  

LIQUIDS PIPELINES

EARNINGS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

EBITDA increased by $1,177 million due to certain unusual, infrequent or other factors, primarily 

2017

2016

2015

explained by the following:

(millions of Canadian dollars)
Earnings before interest, income taxes and depreciation and

amortization

6,395

4,926

3,033

to manage foreign exchange and commodity price risks;

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA for the year ended December 31, 2017 was positively impacted by $285 million of contributions 
from new assets following the completion of the Merger Transaction. 

After taking into consideration the contribution of additional earnings from the Merger Transaction, 
EBITDA increased by $1,312 million due to certain unusual, infrequent or other factors, primarily 
explained by the following:

• 

• 

• 

• 

• 

a non-cash, unrealized gain of $875 million in 2017 compared with $474 million in 2016 reflecting 
net fair value gains and losses arising from changes in the mark-to-market value of derivative 
financial instruments used to manage foreign exchange and commodity price risks;
the absence of an impairment charge of $1,004 million recorded in 2016, including related project 
costs, on EEP's Sandpiper Project resulting from the withdrawal of the regulatory applications in 
September 2016 that were pending with the MNPUC;
the absence of an impairment charge of $373 million recorded in 2016 related to the Northern 
Gateway Project due to our conclusion that the project could not proceed as envisioned as a 
result of the Federal Government's decision to dismiss the application for Certificate of Public 
Convenience and Necessity;
the absence of an impairment charge of $184 million recorded in 2016 related to our 75% joint 
venture interest in Eddystone Rail attributable to market conditions which impacted volumes at 
the rail facility;
a gain of $72 million on sale of pipe partially offset by project wind-down costs related to EEP’s 
Sandpiper Project; partially offset by

60

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

After taking into consideration the factors above, the remaining $128 million decrease is primarily 

explained by the following significant business factors:

a lower contribution of $46 million from Mid-Continent assets primarily due to lower contracted 

storage revenues and the sale of the Ozark Pipeline system in the first quarter of 2017;

a lower contribution of $76 million resulting from the sale of the South Prairie Region assets in 

December 2016;

higher Lakehead System operating costs including costs to implement EEP’s signed settlement 

agreement regarding the Lines 6A and 6B crude oil releases (the Consent Decree) approved by 

the United States Department of Justice (DOJ) in May 2017; 

the unfavorable effect of translating United States dollar EBITDA at a lower United States to 

Canadian dollar average exchange rate (Average Exchange Rate) as compared with 2016, 

inclusive of the impact of settlements under our foreign exchange hedging program; partially 

offset by

contributions of from new assets placed into service including the Regional Oil Sands 

Optimization Project and the Norlite Pipeline System and the acquisition of a minority interest in 

the Bakken Pipeline System that went into service in June 2017; and

higher Canadian Mainline and Lakehead System throughput period over period resulting from 

capacity optimization initiatives.

Year ended December 31, 2016 compared with year ended December 31, 2015 

• 

a non-cash, unrealized gain of $474 million in 2016 compared with an unrealized loss of $1,500 

million in 2015 reflecting net fair value gains and losses on derivative financial instruments used 

a gain of $850 million in 2016 related to the sale of non-core South Prairie Region assets;

the absence of an impairment charge of $86 million recorded in 2015 related to EEP's Berthold 

rail facility due to contracts that were not renewed beyond 2016;

hydrostatic testing recoveries of $15 million in 2016 compared with charges of $72 million in 

2015; partially offset by

an impairment charge of $1,004 million in 2016, including related project costs, on EEP's 

Sandpiper Project resulting from the withdrawal of the regulatory applications in September 2016 

that were pending with the MNPUC; 

• 

an impairment charge of $373 million in 2016 related to the Northern Gateway Project due to our 

conclusion that the project could not proceed as envisioned as a result of the Federal 

Government's decision to dismiss the application for Certificate of Public Convenience and 

Necessity;

an impairment charge of $184 million in 2016 related to our 75% joint venture interest in 

Eddystone Rail attributable to market conditions which impacted volumes at the rail facility; and

the absence of a gain of $91 million recorded in 2015 related to the sale of non-core assets.

After taking into consideration the factors above, the remaining $716 million increase is primarily 

explained by the following significant business factors:

higher throughput period over period resulting from strong oil sands production in western 

Canada enabled by pipeline capacity expansion projects placed into service in 2015;

increased transportation revenues in 2016 resulting from an increase in the level of committed 

take-or-pay volumes on Flanagan South;

the favorable effect of translating United States dollar earnings at a higher Average Exchange 

Rate in 2016, inclusive of the impact of settlements under our foreign exchange hedging program; 

partially offset by

61

 
 
 
 
 
depend on activity levels, which vary from year-to-year depending on market conditions and commodity 

prices.

• 

the absence of a gain of $850 million recorded in 2016 related to the sale of non-core South 
Prairie Region assets.

Our revenues also include changes in unrealized derivative fair value gains and losses related to foreign 

exchange and commodity price contracts used to manage exposures from movements in foreign 

exchange rates and commodity prices. The mark-to-market accounting creates volatility and impacts the 

comparability of revenues in the short-term, but we believe over the long-term, the economic hedging 

program supports reliable cash flows and dividend growth.

DIVIDENDS 

We have paid common share dividends in every year since we became a publicly traded company in 

1953. In November 2017, we announced a 10% increase in our quarterly dividend to $0.671 per common 

share, or $2.684 annualized, effective with the dividend payable on March 1, 2018.

BUSINESS SEGMENTS

Effective December 31, 2017, we changed our segment-level profit measure to EBITDA from the previous 

measure of Earnings before interest and income taxes. We also renamed the Gas Pipelines and 

Processing segment to Gas Transmission and Midstream. The presentation of the prior years' tables has 

been revised in order to align with the current presentation.  

LIQUIDS PIPELINES

EARNINGS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

(millions of Canadian dollars)

Earnings before interest, income taxes and depreciation and

amortization

2017

2016

2015

6,395

4,926

3,033

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA for the year ended December 31, 2017 was positively impacted by $285 million of contributions 

from new assets following the completion of the Merger Transaction. 

After taking into consideration the contribution of additional earnings from the Merger Transaction, 

EBITDA increased by $1,312 million due to certain unusual, infrequent or other factors, primarily 

explained by the following:

• 

a non-cash, unrealized gain of $875 million in 2017 compared with $474 million in 2016 reflecting 

net fair value gains and losses arising from changes in the mark-to-market value of derivative 

financial instruments used to manage foreign exchange and commodity price risks;

• 

the absence of an impairment charge of $1,004 million recorded in 2016, including related project 

costs, on EEP's Sandpiper Project resulting from the withdrawal of the regulatory applications in 

September 2016 that were pending with the MNPUC;

• 

the absence of an impairment charge of $373 million recorded in 2016 related to the Northern 

Gateway Project due to our conclusion that the project could not proceed as envisioned as a 

result of the Federal Government's decision to dismiss the application for Certificate of Public 

Convenience and Necessity;

• 

the absence of an impairment charge of $184 million recorded in 2016 related to our 75% joint 

venture interest in Eddystone Rail attributable to market conditions which impacted volumes at 

• 

a gain of $72 million on sale of pipe partially offset by project wind-down costs related to EEP’s 

the rail facility;

Sandpiper Project; partially offset by

After taking into consideration the factors above, the remaining $128 million decrease is primarily 
explained by the following significant business factors:

• 

• 

• 

• 

• 

• 

a lower contribution of $46 million from Mid-Continent assets primarily due to lower contracted 
storage revenues and the sale of the Ozark Pipeline system in the first quarter of 2017;
a lower contribution of $76 million resulting from the sale of the South Prairie Region assets in 
December 2016;
higher Lakehead System operating costs including costs to implement EEP’s signed settlement 
agreement regarding the Lines 6A and 6B crude oil releases (the Consent Decree) approved by 
the United States Department of Justice (DOJ) in May 2017; 
the unfavorable effect of translating United States dollar EBITDA at a lower United States to 
Canadian dollar average exchange rate (Average Exchange Rate) as compared with 2016, 
inclusive of the impact of settlements under our foreign exchange hedging program; partially 
offset by
contributions of from new assets placed into service including the Regional Oil Sands 
Optimization Project and the Norlite Pipeline System and the acquisition of a minority interest in 
the Bakken Pipeline System that went into service in June 2017; and
higher Canadian Mainline and Lakehead System throughput period over period resulting from 
capacity optimization initiatives.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA increased by $1,177 million due to certain unusual, infrequent or other factors, primarily 
explained by the following:

• 

• 
• 

• 

• 

• 

• 

• 

a non-cash, unrealized gain of $474 million in 2016 compared with an unrealized loss of $1,500 
million in 2015 reflecting net fair value gains and losses on derivative financial instruments used 
to manage foreign exchange and commodity price risks;
a gain of $850 million in 2016 related to the sale of non-core South Prairie Region assets;
the absence of an impairment charge of $86 million recorded in 2015 related to EEP's Berthold 
rail facility due to contracts that were not renewed beyond 2016;
hydrostatic testing recoveries of $15 million in 2016 compared with charges of $72 million in 
2015; partially offset by
an impairment charge of $1,004 million in 2016, including related project costs, on EEP's 
Sandpiper Project resulting from the withdrawal of the regulatory applications in September 2016 
that were pending with the MNPUC; 
an impairment charge of $373 million in 2016 related to the Northern Gateway Project due to our 
conclusion that the project could not proceed as envisioned as a result of the Federal 
Government's decision to dismiss the application for Certificate of Public Convenience and 
Necessity;
an impairment charge of $184 million in 2016 related to our 75% joint venture interest in 
Eddystone Rail attributable to market conditions which impacted volumes at the rail facility; and
the absence of a gain of $91 million recorded in 2015 related to the sale of non-core assets.

After taking into consideration the factors above, the remaining $716 million increase is primarily 
explained by the following significant business factors:

• 

• 

• 

higher throughput period over period resulting from strong oil sands production in western 
Canada enabled by pipeline capacity expansion projects placed into service in 2015;
increased transportation revenues in 2016 resulting from an increase in the level of committed 
take-or-pay volumes on Flanagan South;
the favorable effect of translating United States dollar earnings at a higher Average Exchange 
Rate in 2016, inclusive of the impact of settlements under our foreign exchange hedging program; 
partially offset by

60

61

 
 
 
 
 
2015

2016

2017

• 

the impact of extreme wildfires in northeastern Alberta during the second quarter of 2016 which 
led to a temporary shutdown of certain of our upstream pipelines and terminal facilities resulting 
in a disruption of service.

GAS TRANSMISSION AND MIDSTREAM

EARNINGS/(LOSS) BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND 

Supplemental information on Liquids Pipelines EBITDA for the years ended December 31, 2017, 2016 
and 2015 is provided below.

December 31,
(United States dollars per barrel)
IJT Benchmark Toll1
$4.07
Lakehead System Local Toll2
$2.44
Canadian Mainline IJT Residual Benchmark Toll3
$1.63
1  The IJT Benchmark Toll is per barrel of heavy crude oil transported from Hardisty, Alberta to Chicago, Illinois. A separate distance 
adjusted toll applies to shipments originating at receipt points other than Hardisty and lighter hydrocarbon liquids pay a lower toll 
than heavy crude oil. Effective July 1, 2015, this toll increased from US$4.02 to US$4.07. Effective July 1, 2016, this toll 
decreased to US$4.05. Effective July 1, 2017, this toll increased to US$4.07.

$4.05
$2.58
$1.47

$4.07
$2.43
$1.64

2  The Lakehead System Local Toll is per barrel of heavy crude oil transported from Neche, North Dakota to Chicago, Illinois. 

Effective April 1, 2015, the Lakehead System Local Toll decreased from US$2.49 to US$2.39 and effective July 1, 2015, this toll 
increased to US$2.44. Effective April 1, 2016, this toll increased to US$2.61 and effective July 1, 2016, this toll decreased to US
$2.58. Effective April 1, 2017, this toll decreased to US$2.43.

3  The Canadian Mainline IJT Residual Benchmark Toll is per barrel of heavy crude oil transported from Hardisty, Alberta to Gretna, 

Manitoba. For any shipment, this toll is the difference between the IJT Benchmark Toll and the Lakehead System Local Toll. 
Effective April 1, 2015, this toll increased from US$1.53 to US$1.63. Effective April 1, 2016, this toll decreased to US$1.46, 
coinciding with the revised Lakehead System Local Toll. Effective July 1, 2016, this toll increased to US$1.47. Effective April 1, 
2017, this toll increased to US$1.62, coinciding with the revised Lakehead System Local Toll. Effective July 1, 2017, this toll 
increased to US$1.64.

Throughput Volume

(thousands of barrels per day (bpd))
Canadian Mainline1
2017
2016
2015

Q1

Q2

Q3

Q4 Full Year

2,593
2,543
2,210

2,449
2,242
2,073

2,492
2,353
2,212

2,586
2,481
2,243

2,530
2,405
2,185

Lakehead System2
2,673
2017
2,574
2016
2015
2,315
1  Average throughput volume represents mainline deliveries ex-Gretna, Manitoba which is made up of United States and eastern 

2,620
2,495
2,338

2,724
2,624
2,388

2,604
2,440
2,208

2,748
2,735
2,330

Canada deliveries originating from western Canada.

2  Average throughput volume represents mainline system deliveries to the United States midwest and eastern Canada.

Average Exchange Rate

(United States dollar to Canadian dollar)
2017
2016
2015

Q1

1.32
1.37
1.24

Q2

1.34
1.29
1.23

Q3

1.25
1.31
1.31

Q4 Full Year

1.27
1.33
1.34

1.30
1.32
1.28

62

63

AMORTIZATION

(millions of Canadian dollars)

amortization

Earnings/(loss) before interest, income taxes and depreciation and

2017

2016

2015

(1,269)

464

43

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA for the year ended December 31, 2017 was positively impacted by $2,557 million of contributions 

from new assets following the completion of the Merger Transaction. When compared to pre-merger 

results from the prior year, operating results from the new assets include higher earnings primarily from 

business expansion projects on Algonquin Gas Transmission, Sabal Trail Transmission and Texas 

Eastern Transmission.

After taking into consideration the contribution of additional earnings from the Merger Transaction, 

EBITDA was negatively impacted by $4,287 million due to certain unusual, infrequent or other market 

factors primarily explained by the following:

• 

a loss of $4,391 million and related goodwill impairment of $102 million resulting from the 

classification of certain United States Midstream assets as held for sale and the subsequent 

measurement at the lower of their carrying value or fair value less costs to sell, refer to Item 8. 

Financial Statements and Supplementary Data - Note 7. Acquisitions and Dispositions; partially 

offset by

• 

a non-cash, unrealized loss of $1 million in 2017 compared with $139 million in 2016 reflecting 

net fair value gains and losses arising from the change in the mark-to-market of derivative 

financial instruments used to manage foreign exchange and commodity price risk.

After taking into consideration the factors above, the remaining $3 million decrease is primarily explained 

by the following significant business factors:

lower earnings of $127 million period over period due to lower commodity prices which impacted 

production volume in areas served by some of our US Midstream assets; partially offset by

increased earnings of $19 million period over period from our Alliance joint venture due to 

favorable seasonal firm revenues that resulted from wider basis differentials;

increased earnings of $16 million due to a full year of contributions from the Tupper Plants that 

were acquired in April 2016;

increased fractionation margins of $45 million period over period driven by higher NGL prices and 

increased demand from our Aux Sable joint venture; and

increased earnings of $41 million period over period from our Offshore assets driven by higher 

volumes and higher earnings from certain joint venture pipelines.

• 

• 

• 

• 

• 

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA increased by $370 million due to certain unusual, infrequent or other market factors primarily 

explained by the following:

• 

the absence of a goodwill impairment charge of $440 million recorded in 2015 related to our 

United States natural gas and NGL businesses due to a prolonged decline in commodity prices 

which reduced producers' expected drilling programs and negatively impacted volumes on our 

natural gas and NGL systems; partially offset by

• 

a non-cash, unrealized loss of $139 million in 2016 compared with $77 million in 2015 reflecting 

net fair value gains and losses arising from the change in the mark-to-market of derivative 

financial instruments used to manage foreign exchange and commodity price risk.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
• 

the impact of extreme wildfires in northeastern Alberta during the second quarter of 2016 which 

led to a temporary shutdown of certain of our upstream pipelines and terminal facilities resulting 

in a disruption of service.

Supplemental information on Liquids Pipelines EBITDA for the years ended December 31, 2017, 2016 

and 2015 is provided below.

December 31,

(United States dollars per barrel)

IJT Benchmark Toll1

Lakehead System Local Toll2

2017

$4.07

$2.43

$1.64

2016

2015

$4.05

$2.58

$1.47

$4.07

$2.44

$1.63

Canadian Mainline IJT Residual Benchmark Toll3

1  The IJT Benchmark Toll is per barrel of heavy crude oil transported from Hardisty, Alberta to Chicago, Illinois. A separate distance 

adjusted toll applies to shipments originating at receipt points other than Hardisty and lighter hydrocarbon liquids pay a lower toll 

than heavy crude oil. Effective July 1, 2015, this toll increased from US$4.02 to US$4.07. Effective July 1, 2016, this toll 

decreased to US$4.05. Effective July 1, 2017, this toll increased to US$4.07.

2  The Lakehead System Local Toll is per barrel of heavy crude oil transported from Neche, North Dakota to Chicago, Illinois. 

Effective April 1, 2015, the Lakehead System Local Toll decreased from US$2.49 to US$2.39 and effective July 1, 2015, this toll 

increased to US$2.44. Effective April 1, 2016, this toll increased to US$2.61 and effective July 1, 2016, this toll decreased to US

$2.58. Effective April 1, 2017, this toll decreased to US$2.43.

3  The Canadian Mainline IJT Residual Benchmark Toll is per barrel of heavy crude oil transported from Hardisty, Alberta to Gretna, 

Manitoba. For any shipment, this toll is the difference between the IJT Benchmark Toll and the Lakehead System Local Toll. 

Effective April 1, 2015, this toll increased from US$1.53 to US$1.63. Effective April 1, 2016, this toll decreased to US$1.46, 

coinciding with the revised Lakehead System Local Toll. Effective July 1, 2016, this toll increased to US$1.47. Effective April 1, 

2017, this toll increased to US$1.62, coinciding with the revised Lakehead System Local Toll. Effective July 1, 2017, this toll 

increased to US$1.64.

Throughput Volume

(thousands of barrels per day (bpd))

Canadian Mainline1

Lakehead System2

Average Exchange Rate

(United States dollar to Canadian dollar)

2017

2016

2015

2017

2016

2015

2017

2016

2015

Q1

Q2

Q3

Q4 Full Year

2,593

2,543

2,210

2,748

2,735

2,330

2,449

2,242

2,073

2,604

2,440

2,208

2,492

2,353

2,212

2,620

2,495

2,338

2,586

2,481

2,243

2,724

2,624

2,388

2,530

2,405

2,185

2,673

2,574

2,315

Q1

1.32

1.37

1.24

Q2

1.34

1.29

1.23

Q3

1.25

1.31

1.31

Q4 Full Year

1.27

1.33

1.34

1.30

1.32

1.28

1  Average throughput volume represents mainline deliveries ex-Gretna, Manitoba which is made up of United States and eastern 

Canada deliveries originating from western Canada.

2  Average throughput volume represents mainline system deliveries to the United States midwest and eastern Canada.

GAS TRANSMISSION AND MIDSTREAM

EARNINGS/(LOSS) BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND 
AMORTIZATION

(millions of Canadian dollars)
Earnings/(loss) before interest, income taxes and depreciation and

amortization

2017

2016

2015

(1,269)

464

43

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA for the year ended December 31, 2017 was positively impacted by $2,557 million of contributions 
from new assets following the completion of the Merger Transaction. When compared to pre-merger 
results from the prior year, operating results from the new assets include higher earnings primarily from 
business expansion projects on Algonquin Gas Transmission, Sabal Trail Transmission and Texas 
Eastern Transmission.

After taking into consideration the contribution of additional earnings from the Merger Transaction, 
EBITDA was negatively impacted by $4,287 million due to certain unusual, infrequent or other market 
factors primarily explained by the following:

• 

• 

a loss of $4,391 million and related goodwill impairment of $102 million resulting from the 
classification of certain United States Midstream assets as held for sale and the subsequent 
measurement at the lower of their carrying value or fair value less costs to sell, refer to Item 8. 
Financial Statements and Supplementary Data - Note 7. Acquisitions and Dispositions; partially 
offset by
a non-cash, unrealized loss of $1 million in 2017 compared with $139 million in 2016 reflecting 
net fair value gains and losses arising from the change in the mark-to-market of derivative 
financial instruments used to manage foreign exchange and commodity price risk.

After taking into consideration the factors above, the remaining $3 million decrease is primarily explained 
by the following significant business factors:

• 

• 

• 

• 

• 

lower earnings of $127 million period over period due to lower commodity prices which impacted 
production volume in areas served by some of our US Midstream assets; partially offset by
increased earnings of $19 million period over period from our Alliance joint venture due to 
favorable seasonal firm revenues that resulted from wider basis differentials;
increased earnings of $16 million due to a full year of contributions from the Tupper Plants that 
were acquired in April 2016;
increased fractionation margins of $45 million period over period driven by higher NGL prices and 
increased demand from our Aux Sable joint venture; and
increased earnings of $41 million period over period from our Offshore assets driven by higher 
volumes and higher earnings from certain joint venture pipelines.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA increased by $370 million due to certain unusual, infrequent or other market factors primarily 
explained by the following:

• 

• 

the absence of a goodwill impairment charge of $440 million recorded in 2015 related to our 
United States natural gas and NGL businesses due to a prolonged decline in commodity prices 
which reduced producers' expected drilling programs and negatively impacted volumes on our 
natural gas and NGL systems; partially offset by
a non-cash, unrealized loss of $139 million in 2016 compared with $77 million in 2015 reflecting 
net fair value gains and losses arising from the change in the mark-to-market of derivative 
financial instruments used to manage foreign exchange and commodity price risk.

62

63

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
After taking into consideration the factors above, the remaining $51 million increase is primarily explained 
by the following significant business factors:

• 
• 
• 
• 

operational efficiencies achieved in 2016 on Alliance Pipeline due to lower operating costs;
contributions from the Heidelberg Pipeline which was placed into service in January 2016;
contributions from the Tupper Plants acquired in April 2016; partially offset by
unfavorable market conditions in 2016 resulting from lower volumes due to reduced drilling by 
producers on our United States Midstream assets.

GAS DISTRIBUTION

EARNINGS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

(millions of Canadian dollars)
Earnings before interest, income taxes and depreciation and

amortization

2017

2016

2015

1,390

831

763

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA for the year ended December 31, 2017 was positively impacted by $545 million of contributions 
from Union Gas following the completion of the Merger Transaction. When compared to pre-merger 
results from prior years, Union Gas' operating results benefited mainly from higher transportation revenue 
from the Dawn-Parkway expansion projects, increased storage optimization and increases in delivery 
rates, partially offset by higher operating costs. 

After taking into consideration the contribution of additional earnings from the Merger Transaction, 
EBITDA increased by $14 million due to certain unusual, infrequent and other business factors, primarily 
explained by the following:

• 

a non-cash, unrealized gain of $16 million in 2017 compared with an unrealized loss of $6 million 
in 2016 arising from the change in the mark-to-market value of Noverco Inc.'s (Noverco) 
derivative financial instruments;

•  warmer than normal weather experienced during 2017 which negatively impacted EBITDA by $15 

million compared with $18 million in 2016; partially offset by 
the absence of other regulatory adjustments at Noverco of $17 million recorded in 2016.

• 

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA decreased by $11 million due to certain unusual, infrequent and other market factors, primarily 
explained by the following:

•  warmer than normal weather experienced during 2016 which negatively impacted EBITDA by $18 
million compared with colder than normal weather during 2015 of $15 million; partially offset by
other regulatory adjustments at Noverco of $17 million recorded in 2016 compared with $6 million 
in 2015.

• 

After taking into consideration the factors above, the remaining $79 million increase is primarily explained 
by the following significant business factor:

• 

higher distribution charges arising from growth in rate base, including customer growth in excess 
of expectations embedded in rates.

GREEN POWER AND TRANSMISSION

EARNINGS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

(millions of Canadian dollars)

amortization

Earnings before interest, income taxes and depreciation and

2017

2016

2015

372

344

363

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA increased by $4 million due to certain unusual, infrequent and other factors, primarily explained 

by the following:

the absence of an investment impairment loss of $13 million recorded in 2016; partially offset by

a $9 million loss that resulted from the sale of an investment.

After taking into consideration the factors above, the remaining $24 million increase is primarily explained 

by the following significant business factors:

stronger wind resources of $12 million at Canadian and United States wind farms period over 

contributions of $9 million from new United States wind projects placed into service in 2016 and 

• 

• 

• 

• 

period; and

2017.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA decreased by $13 million due to an unusual and infrequent investment impairment loss in 2016.

After taking into consideration the factor above, the remaining $6 million decrease is primarily explained 

by the following significant business factors:

• 

disruptions at certain eastern Canadian wind farms in the first quarter and fourth quarter of 2016 

due to weather conditions which caused a higher degree of icing on wind turbine blades;

•  weaker wind resources experienced at certain facilities in Canada period over period; partially 

offset by

• 

stronger wind resources at United States wind farms during the second half of 2016.

64

65

 
 
 
 
 
 
 
 
 
 
 
After taking into consideration the factors above, the remaining $51 million increase is primarily explained 

by the following significant business factors:

• 

• 

• 

• 

operational efficiencies achieved in 2016 on Alliance Pipeline due to lower operating costs;

contributions from the Heidelberg Pipeline which was placed into service in January 2016;

contributions from the Tupper Plants acquired in April 2016; partially offset by

unfavorable market conditions in 2016 resulting from lower volumes due to reduced drilling by 

producers on our United States Midstream assets.

GAS DISTRIBUTION

EARNINGS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

(millions of Canadian dollars)

amortization

Earnings before interest, income taxes and depreciation and

2017

2016

2015

1,390

831

763

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA for the year ended December 31, 2017 was positively impacted by $545 million of contributions 

from Union Gas following the completion of the Merger Transaction. When compared to pre-merger 

results from prior years, Union Gas' operating results benefited mainly from higher transportation revenue 

from the Dawn-Parkway expansion projects, increased storage optimization and increases in delivery 

rates, partially offset by higher operating costs. 

After taking into consideration the contribution of additional earnings from the Merger Transaction, 

EBITDA increased by $14 million due to certain unusual, infrequent and other business factors, primarily 

explained by the following:

• 

a non-cash, unrealized gain of $16 million in 2017 compared with an unrealized loss of $6 million 

in 2016 arising from the change in the mark-to-market value of Noverco Inc.'s (Noverco) 

derivative financial instruments;

•  warmer than normal weather experienced during 2017 which negatively impacted EBITDA by $15 

million compared with $18 million in 2016; partially offset by 

• 

the absence of other regulatory adjustments at Noverco of $17 million recorded in 2016.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA decreased by $11 million due to certain unusual, infrequent and other market factors, primarily 

explained by the following:

•  warmer than normal weather experienced during 2016 which negatively impacted EBITDA by $18 

million compared with colder than normal weather during 2015 of $15 million; partially offset by

• 

other regulatory adjustments at Noverco of $17 million recorded in 2016 compared with $6 million 

in 2015.

After taking into consideration the factors above, the remaining $79 million increase is primarily explained 

by the following significant business factor:

of expectations embedded in rates.

• 

higher distribution charges arising from growth in rate base, including customer growth in excess 

GREEN POWER AND TRANSMISSION

EARNINGS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

(millions of Canadian dollars)
Earnings before interest, income taxes and depreciation and

amortization

2017

2016

2015

372

344

363

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA increased by $4 million due to certain unusual, infrequent and other factors, primarily explained 
by the following:

• 
• 

the absence of an investment impairment loss of $13 million recorded in 2016; partially offset by
a $9 million loss that resulted from the sale of an investment.

After taking into consideration the factors above, the remaining $24 million increase is primarily explained 
by the following significant business factors:

• 

• 

stronger wind resources of $12 million at Canadian and United States wind farms period over 
period; and
contributions of $9 million from new United States wind projects placed into service in 2016 and 
2017.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA decreased by $13 million due to an unusual and infrequent investment impairment loss in 2016.

After taking into consideration the factor above, the remaining $6 million decrease is primarily explained 
by the following significant business factors:

• 

disruptions at certain eastern Canadian wind farms in the first quarter and fourth quarter of 2016 
due to weather conditions which caused a higher degree of icing on wind turbine blades;
•  weaker wind resources experienced at certain facilities in Canada period over period; partially 

offset by
stronger wind resources at United States wind farms during the second half of 2016.

• 

64

65

 
 
 
 
 
 
 
 
 
 
 
ENERGY SERVICES

ELIMINATIONS AND OTHER

EARNINGS/(LOSS) BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND 
AMORTIZATION

2017

2016

2015

(millions of Canadian dollars)

(millions of Canadian dollars)
Earnings/(loss) before interest, income taxes and depreciation and

amortization

(263)

(183)

324

EBITDA from Energy Services is dependent on market conditions and results achieved in one period may 
not be indicative of results to be achieved in future periods. 

Year ended December 31, 2017 compared with year ended December 31, 2016 

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA increased by $2 million due to certain unusual, infrequent or other factors, primarily explained by 
the following:

• 

a non-cash, unrealized loss of $200 million in 2017 compared with $205 million in 2016 reflecting 
the revaluation of financial derivatives used to manage the profitability of transportation and 
storage transactions and exposure to movements in commodity prices.

After taking into consideration the factors above, the remaining $82 million decrease is primarily 
explained by the following significant business factor:

•  weaker performance from Energy Services’ Canadian and United States operations due to the 

compression of certain crude oil and NGL location and quality differentials in 2017 which limited 
opportunities to generate profitable margins.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA decreased by $477 million due to certain unusual, infrequent or other factors, primarily explained 
by the following:

• 

a non-cash, unrealized loss of $205 million in 2016 compared with an unrealized gain of $264 
million in 2015 reflecting the revaluation of financial derivatives used to manage the profitability of 
transportation and storage transactions and exposure to movements in commodity prices.

After taking into consideration the factor above, the remaining $30 million decrease is primarily explained 
by the following significant business factor:

•  weaker performance from Energy Services’ Canadian and United States operations due to the 

compression of certain crude oil and NGL location and quality differentials in 2016 which limited 
opportunities to generate profitable margins.

LOSS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

Loss before interest, income taxes and depreciation and amortization

(101)

(867)

2016

2015

2017

(337)

Eliminations and Other includes operating and administrative costs and the impact of foreign exchange 

hedge settlements which are not allocated to business segments. Eliminations and Other also includes 

new business development activities, general corporate investments and a portion of the synergies 

achieved thus far on integration of corporate functions in relation to the Merger Transaction.

• 

• 

• 

• 

• 

• 

• 

EBITDA decreased by $315 million due to certain unusual, infrequent and other factors, primarily 

explained by the following:

project development and transaction costs of $197 million incurred in 2017 compared with $81 

million in 2016 related to the Merger Transaction;

employee severance and restructuring costs of $292 million in 2017 compared with $92 million in 

2016 related to a corporate reorganization initiative and the Merger Transaction; partially offset by

a non-cash, unrealized intercompany foreign exchange loss of $29 million in 2017 compared with 

$43 million in 2016 under our foreign exchange risk management program.

After taking into consideration the factors above, the remaining $79 million increase is primarily explained 

by the following significant business factor:

• 

a realized loss of $173 million in 2017 compared with $281 million in 2016 related to settlements 

under our foreign exchange risk management program.

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA increased by $854 million due to certain unusual, infrequent and other factors, primarily 

explained by the following:

a non-cash, unrealized gain of $417 million in 2016 compared with an unrealized loss of $694 

million in 2015 resulting from our foreign exchange hedging program; partially offset by

a non-cash, unrealized intercompany foreign exchange loss of $43 million in 2016 compared with 

project development and transaction costs of $81 million incurred in 2016 in relation to the Merger 

employee severances costs of $92 million in 2016 compared with $47 million in 2015 related to a 

a gain of $131 million in 2015;

Transaction; and

corporate reorganization initiative.

After taking into consideration the factors above, the remaining $88 million decrease is primarily 

explained by the following significant business factor:

• 

a realized loss of $281 million in 2016 compared with $203 million in 2015 related to settlements 

under our foreign exchange risk management program.

66

67

 
 
 
 
 
 
 
 
 
 
ENERGY SERVICES

AMORTIZATION

(millions of Canadian dollars)

amortization

Earnings/(loss) before interest, income taxes and depreciation and

2017

2016

2015

(263)

(183)

324

EBITDA from Energy Services is dependent on market conditions and results achieved in one period may 

not be indicative of results to be achieved in future periods. 

EBITDA increased by $2 million due to certain unusual, infrequent or other factors, primarily explained by 

the following:

• 

a non-cash, unrealized loss of $200 million in 2017 compared with $205 million in 2016 reflecting 

the revaluation of financial derivatives used to manage the profitability of transportation and 

storage transactions and exposure to movements in commodity prices.

After taking into consideration the factors above, the remaining $82 million decrease is primarily 

explained by the following significant business factor:

•  weaker performance from Energy Services’ Canadian and United States operations due to the 

compression of certain crude oil and NGL location and quality differentials in 2017 which limited 

opportunities to generate profitable margins.

Year ended December 31, 2016 compared with year ended December 31, 2015 

by the following:

• 

a non-cash, unrealized loss of $205 million in 2016 compared with an unrealized gain of $264 

million in 2015 reflecting the revaluation of financial derivatives used to manage the profitability of 

transportation and storage transactions and exposure to movements in commodity prices.

After taking into consideration the factor above, the remaining $30 million decrease is primarily explained 

by the following significant business factor:

•  weaker performance from Energy Services’ Canadian and United States operations due to the 

compression of certain crude oil and NGL location and quality differentials in 2016 which limited 

opportunities to generate profitable margins.

EARNINGS/(LOSS) BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND 

LOSS BEFORE INTEREST, INCOME TAXES AND DEPRECIATION AND AMORTIZATION

ELIMINATIONS AND OTHER

(millions of Canadian dollars)
Loss before interest, income taxes and depreciation and amortization

2017

(337)

2016

2015

(101)

(867)

Eliminations and Other includes operating and administrative costs and the impact of foreign exchange 
hedge settlements which are not allocated to business segments. Eliminations and Other also includes 
new business development activities, general corporate investments and a portion of the synergies 
achieved thus far on integration of corporate functions in relation to the Merger Transaction.

Year ended December 31, 2017 compared with year ended December 31, 2016 

Year ended December 31, 2017 compared with year ended December 31, 2016 

EBITDA decreased by $315 million due to certain unusual, infrequent and other factors, primarily 
explained by the following:

• 

• 

• 

project development and transaction costs of $197 million incurred in 2017 compared with $81 
million in 2016 related to the Merger Transaction;
employee severance and restructuring costs of $292 million in 2017 compared with $92 million in 
2016 related to a corporate reorganization initiative and the Merger Transaction; partially offset by
a non-cash, unrealized intercompany foreign exchange loss of $29 million in 2017 compared with 
$43 million in 2016 under our foreign exchange risk management program.

After taking into consideration the factors above, the remaining $79 million increase is primarily explained 
by the following significant business factor:

• 

a realized loss of $173 million in 2017 compared with $281 million in 2016 related to settlements 
under our foreign exchange risk management program.

EBITDA decreased by $477 million due to certain unusual, infrequent or other factors, primarily explained 

Year ended December 31, 2016 compared with year ended December 31, 2015 

EBITDA increased by $854 million due to certain unusual, infrequent and other factors, primarily 
explained by the following:

• 

• 

• 

• 

a non-cash, unrealized gain of $417 million in 2016 compared with an unrealized loss of $694 
million in 2015 resulting from our foreign exchange hedging program; partially offset by
a non-cash, unrealized intercompany foreign exchange loss of $43 million in 2016 compared with 
a gain of $131 million in 2015;
project development and transaction costs of $81 million incurred in 2016 in relation to the Merger 
Transaction; and
employee severances costs of $92 million in 2016 compared with $47 million in 2015 related to a 
corporate reorganization initiative.

After taking into consideration the factors above, the remaining $88 million decrease is primarily 
explained by the following significant business factor:

• 

a realized loss of $281 million in 2016 compared with $203 million in 2015 related to settlements 
under our foreign exchange risk management program.

66

67

 
 
 
 
 
 
 
 
 
 
GROWTH PROJECTS – COMMERCIALLY SECURED PROJECTS

A key element of our corporate strategy is the successful execution of our growth capital program. In 
2017, we successfully placed into service approximately $12 billion of growth projects across several 
business units and we expect to place a further $22 billion of commercially secured projects into service 
through 2020.

The following table summarizes the status of our commercially secured projects, organized by business 
segment:

(Canadian dollars, unless stated otherwise)
LIQUIDS PIPELINES

1 Norlite Pipeline System (the

Fund Group)

2 Bakken Pipeline System 

(EEP)3

3 Regional Oil Sands

Optimization Project (the Fund
Group)

4

Lakehead System Mainline 
Expansion - Line 61 (EEP)4
5 Canadian Line 3 Replacement
Program (the Fund Group)
6 U.S. Line 3 Replacement 

Program (EEP)4
7 Other - Canada

Enbridge's
Ownership
Interest

Estimated
Capital Cost1

Expenditures
to Date2

Expected
In-Service
Date

Status

70%

$1.3 billion

$1.1 billion

Complete

In service

27.6% US$1.5 billion

US$1.5 billion

Complete

In service

100%

$2.6 billion

$2.3 billion

Complete

In service

100% US$0.4 billion

US$0.4 billion

100%

$5.3 billion

$2.3 billion

100% US$2.9 billion

US$0.7 billion

100%

$0.2 billion

$0.2 billion

Substantially
complete
Under
construction
Under
construction
Various
stages

2H - 2019

2H - 2019

2H - 2019

2018

GAS TRANSMISSION & MIDSTREAM

8 Sabal Trail (SEP)5

50% US$1.6 billion

US$1.5 billion

Complete

In service

9 Access South, Adair 

Southwest and Lebanon 
Extension (SEP)5
10 Atlantic Bridge (SEP)5

11 NEXUS (SEP)5

12 Reliability and Maintainability 

Project5

13 Valley Crossing Pipeline5

100% US$0.5 billion

US$0.3 billion

Complete

In service

100% US$0.5 billion

US$0.3 billion

Under Q4 - 2018

construction

50% US$1.3 billion

US$0.6 billion

Under Q3 - 2018

construction

100%

$0.5 billion

$0.4 billion

Under Q3 - 2018

construction

100% US$1.5 billion

US$1.1 billion

Under Q4 - 2018

14 Spruce Ridge Program5

100%

$0.5 billion

$0.1 billion

15 T-South Expansion Program5

100%

$1.0 billion

No significant

16 Other - United States5

100% US$1.9 billion

expenditures to date
US$1.0 billion

17 Other - Canada5

100%

$0.9 billion

$0.7 billion

construction
Pre-
construction
Pre-
construction
Various
stages
Various
stages

2019

2020

2017-2019

2017-2018

GAS DISTRIBUTION

18

2017 Dawn-Parkway 
Expansion5

100%

$0.6 billion

$0.6 billion

Complete

In service

19 Panhandle Reinforcement

100%

$0.3 billion

$0.2 billion

Complete

In service

Project5

68

69

GREEN POWER & TRANSMISSION

20 Chapman Ranch Wind Project

100% US$0.4 billion

US$0.3 billion

Complete

In service

21 Rampion Offshore Wind

24.9%

$0.8 billion

$0.6 billion

Under Q2 - 2018

Project

22 Hohe See Offshore Wind

Project and Expansion

(£0.37 billion)

(£0.3 billion)

construction

50%

$2.1 billion

$0.5 billion

Pre-

2H - 2019

(€1.34 billion)

(€0.4 billion)

construction

1  These amounts are estimates and are subject to upward or downward adjustment based on various factors. Where appropriate, 

the amounts reflect our share of joint venture projects.

2  Expenditures to date reflect total cumulative expenditures incurred from inception of the project up to December 31, 2017.

3  On February 15, 2017, EEP acquired an effective 27.6% interest in the Bakken Pipeline System for a purchase price of $2.0 

billion (US$1.5 billion). On April 27, 2017, Enbridge entered into a joint funding arrangement with EEP whereby Enbridge owns 

75% and EEP owns 25% of the combined 27.6% effective interest in the Bakken Pipeline System.

4  The Lakehead System Mainline Expansion project is funded 75% by Enbridge and 25% by EEP, and the project will be operated 

by EEP on a cost-of-service basis. The U.S. L3R Program is being funded 99% by Enbridge and 1% by EEP.

5  Project acquired as part of the Merger Transaction. For additional information, refer to Merger with Spectra Energy.

Risks related to the development and completion of growth projects are described under Part I. Item 1A. 

Risk Factors.

LIQUIDS PIPELINES 

The following commercially secured growth projects were placed into service in 2017: 

•  Norlite Pipeline System (the Fund Group) - a diluent pipeline originating from our Stonefell 

Terminal and terminating at our Fort McMurray South facility, with a transfer line to Suncor's East 

Tank Farm. The project provides an initial capacity of approximately 218,000 bpd, with the potential to 

be further expanded to approximately 465,000 bpd with the addition of pump stations. The project 

was placed into commercial service on May 1, 2017.  

•  Bakken Pipeline System (EEP) - a pipeline system that transports crude oil from the Bakken 

formation in North Dakota to markets in eastern PADD II, and the United States Gulf Coast. The 

system's initial capacity is approximately 470,000 bpd of crude oil and has the potential to be 

expanded to 570,000 bpd. The system was placed into service on June 1, 2017.

•  Regional Oil Sands Optimization Project (the Fund Group) - the Athabasca Pipeline Twin portion 

of the project, which includes twinning of the southern section of the crude oil Athabasca Pipeline 

from Kirby Lake, Alberta to the crude oil hub at Hardisty, Alberta provides an initial capacity of 

approximately 450,000 bpd, with the potential to be further expanded to approximately 800,000 bpd. 

This portion of the project was placed into service on January 1, 2017. The Wood Buffalo Extension 

portion of the project includes a crude oil pipeline expansion between Cheecham, Alberta and Kirby 

Lake, Alberta that provides an initial capacity of approximately 635,000 bpd, with the potential to be 

further expanded to approximately 800,000 bpd. This portion of the project was placed into service on 

December 1, 2017. 

• 

JACOS Hangingstone Project (the Fund Group) - a crude oil pipeline connecting the Japan 

Canada Oil Sands Limited (JACOS) Hangingstone project site to our existing Cheecham Terminal 

that provides an initial capacity of approximately 40,000 bpd. The project was placed into service on 

August 29, 2017.

2019:

The following commercially secured growth projects are expected to be placed into service in 2018 and 

•  Lakehead System Mainline Expansion (EEP) - the remaining scope of the project includes the 

Southern Access expansion between Superior, Wisconsin and Flanagan, Illinois that will increase 

capacity from 950,000 bpd to 1,200,000 bpd, which was substantially completed in June of 2017. We 

currently anticipate an in-service date in the second half of 2019 for this phase to more closely align 

 
GROWTH PROJECTS – COMMERCIALLY SECURED PROJECTS

A key element of our corporate strategy is the successful execution of our growth capital program. In 

2017, we successfully placed into service approximately $12 billion of growth projects across several 

business units and we expect to place a further $22 billion of commercially secured projects into service 

The following table summarizes the status of our commercially secured projects, organized by business 

through 2020.

segment:

Enbridge's

Ownership

Interest

Estimated

Capital Cost1

Expenditures

to Date2

Expected

In-Service

Date

Status

1 Norlite Pipeline System (the

70%

$1.3 billion

$1.1 billion

Complete

In service

2 Bakken Pipeline System 

27.6% US$1.5 billion

US$1.5 billion

Complete

In service

(Canadian dollars, unless stated otherwise)

LIQUIDS PIPELINES

Fund Group)

(EEP)3

Group)

3 Regional Oil Sands

Optimization Project (the Fund

4

Lakehead System Mainline 

Expansion - Line 61 (EEP)4

Program (the Fund Group)

6 U.S. Line 3 Replacement 

Program (EEP)4

9 Access South, Adair 

Southwest and Lebanon 

Extension (SEP)5

10 Atlantic Bridge (SEP)5

11 NEXUS (SEP)5

Project5

13 Valley Crossing Pipeline5

5 Canadian Line 3 Replacement

100%

$5.3 billion

$2.3 billion

Under

2H - 2019

100% US$0.4 billion

US$0.4 billion

Substantially

2H - 2019

100% US$2.9 billion

US$0.7 billion

Under

2H - 2019

7 Other - Canada

100%

$0.2 billion

$0.2 billion

2018

GAS TRANSMISSION & MIDSTREAM

8 Sabal Trail (SEP)5

50% US$1.6 billion

US$1.5 billion

Complete

In service

100% US$0.5 billion

US$0.3 billion

Complete

In service

100% US$0.5 billion

US$0.3 billion

Under Q4 - 2018

50% US$1.3 billion

US$0.6 billion

Under Q3 - 2018

12 Reliability and Maintainability 

100%

$0.5 billion

$0.4 billion

Under Q3 - 2018

100% US$1.5 billion

US$1.1 billion

Under Q4 - 2018

14 Spruce Ridge Program5

100%

$0.5 billion

$0.1 billion

15 T-South Expansion Program5

100%

$1.0 billion

No significant

16 Other - United States5

100% US$1.9 billion

US$1.0 billion

expenditures to date

construction

17 Other - Canada5

100%

$0.9 billion

$0.7 billion

2019

2020

Various

stages

Various

stages

2017-2019

2017-2018

GAS DISTRIBUTION

18

2017 Dawn-Parkway 

Expansion5

Project5

19 Panhandle Reinforcement

100%

$0.3 billion

$0.2 billion

Complete

In service

100%

$0.6 billion

$0.6 billion

Complete

In service

complete

construction

construction

Various

stages

construction

construction

construction

construction

construction

Pre-

Pre-

GREEN POWER & TRANSMISSION
20 Chapman Ranch Wind Project

100% US$0.4 billion

US$0.3 billion

Complete

In service

21 Rampion Offshore Wind

Project

22 Hohe See Offshore Wind

Project and Expansion

24.9%

50%

$0.8 billion
(£0.37 billion)
$2.1 billion
(€1.34 billion)

$0.6 billion
(£0.3 billion)
$0.5 billion
(€0.4 billion)

Under Q2 - 2018

construction
Pre-
construction

2H - 2019

1  These amounts are estimates and are subject to upward or downward adjustment based on various factors. Where appropriate, 

the amounts reflect our share of joint venture projects.

2  Expenditures to date reflect total cumulative expenditures incurred from inception of the project up to December 31, 2017.
3  On February 15, 2017, EEP acquired an effective 27.6% interest in the Bakken Pipeline System for a purchase price of $2.0 

billion (US$1.5 billion). On April 27, 2017, Enbridge entered into a joint funding arrangement with EEP whereby Enbridge owns 
75% and EEP owns 25% of the combined 27.6% effective interest in the Bakken Pipeline System.

4  The Lakehead System Mainline Expansion project is funded 75% by Enbridge and 25% by EEP, and the project will be operated 

by EEP on a cost-of-service basis. The U.S. L3R Program is being funded 99% by Enbridge and 1% by EEP.

5  Project acquired as part of the Merger Transaction. For additional information, refer to Merger with Spectra Energy.

Risks related to the development and completion of growth projects are described under Part I. Item 1A. 
Risk Factors.

100%

$2.6 billion

$2.3 billion

Complete

In service

LIQUIDS PIPELINES 
The following commercially secured growth projects were placed into service in 2017: 

•  Norlite Pipeline System (the Fund Group) - a diluent pipeline originating from our Stonefell 

Terminal and terminating at our Fort McMurray South facility, with a transfer line to Suncor's East 
Tank Farm. The project provides an initial capacity of approximately 218,000 bpd, with the potential to 
be further expanded to approximately 465,000 bpd with the addition of pump stations. The project 
was placed into commercial service on May 1, 2017.  

•  Bakken Pipeline System (EEP) - a pipeline system that transports crude oil from the Bakken 

formation in North Dakota to markets in eastern PADD II, and the United States Gulf Coast. The 
system's initial capacity is approximately 470,000 bpd of crude oil and has the potential to be 
expanded to 570,000 bpd. The system was placed into service on June 1, 2017.

•  Regional Oil Sands Optimization Project (the Fund Group) - the Athabasca Pipeline Twin portion 
of the project, which includes twinning of the southern section of the crude oil Athabasca Pipeline 
from Kirby Lake, Alberta to the crude oil hub at Hardisty, Alberta provides an initial capacity of 
approximately 450,000 bpd, with the potential to be further expanded to approximately 800,000 bpd. 
This portion of the project was placed into service on January 1, 2017. The Wood Buffalo Extension 
portion of the project includes a crude oil pipeline expansion between Cheecham, Alberta and Kirby 
Lake, Alberta that provides an initial capacity of approximately 635,000 bpd, with the potential to be 
further expanded to approximately 800,000 bpd. This portion of the project was placed into service on 
December 1, 2017. 

• 

JACOS Hangingstone Project (the Fund Group) - a crude oil pipeline connecting the Japan 
Canada Oil Sands Limited (JACOS) Hangingstone project site to our existing Cheecham Terminal 
that provides an initial capacity of approximately 40,000 bpd. The project was placed into service on 
August 29, 2017.

The following commercially secured growth projects are expected to be placed into service in 2018 and 
2019:

•  Lakehead System Mainline Expansion (EEP) - the remaining scope of the project includes the 
Southern Access expansion between Superior, Wisconsin and Flanagan, Illinois that will increase 
capacity from 950,000 bpd to 1,200,000 bpd, which was substantially completed in June of 2017. We 
currently anticipate an in-service date in the second half of 2019 for this phase to more closely align 

68

69

 
with the anticipated in-service date for the Line 3 Replacement Program (U.S. L3R Program). For 
additional updates on the project, refer to Growth Projects - Regulatory Matters.

•  Canadian Line 3 Replacement Program (the Fund Group) - replacement of the existing Line 3 

crude oil pipeline between Hardisty, Alberta and Gretna, Manitoba. The L3R Program will not provide 
an increase in the overall capacity of the mainline system, but will restore approximately 370,000 bpd 
and supports the safety and operational reliability of the overall system, enhances flexibility and will 
allow us to optimize throughput from western Canada into Superior, Wisconsin. The L3R Program is 
expected to achieve the original capacity of approximately 760,000 bpd. Construction commenced in 
early August 2017. For additional updates on the project, refer to Growth Projects - Regulatory 
Matters. 

•  United States Line 3 Replacement Program (EEP) - replacement of the existing Line 3 crude oil 

pipeline between Neche, North Dakota and Superior, Wisconsin. The U.S. L3R Program, along with 
the Canadian L3R Program discussed above, will support the safety and operational reliability of the 
mainline system, enhance system flexibility, and allow the Company and EEP to optimize throughput 
on the mainline. The L3R Program is expected to achieve the original capacity of approximately 
760,000 bpd. Construction commenced on the Wisconsin portion of the U.S. L3R Program in late 
June 2017 and will be substantially complete in February 2018. For additional updates on the project, 
refer to Growth Projects - Regulatory Matters.

70

71

with the anticipated in-service date for the Line 3 Replacement Program (U.S. L3R Program). For 

additional updates on the project, refer to Growth Projects - Regulatory Matters.

Norman
Norman
Wells
Wells

•  Canadian Line 3 Replacement Program (the Fund Group) - replacement of the existing Line 3 

crude oil pipeline between Hardisty, Alberta and Gretna, Manitoba. The L3R Program will not provide 

an increase in the overall capacity of the mainline system, but will restore approximately 370,000 bpd 

and supports the safety and operational reliability of the overall system, enhances flexibility and will 

allow us to optimize throughput from western Canada into Superior, Wisconsin. The L3R Program is 

expected to achieve the original capacity of approximately 760,000 bpd. Construction commenced in 

early August 2017. For additional updates on the project, refer to Growth Projects - Regulatory 

Matters. 

•  United States Line 3 Replacement Program (EEP) - replacement of the existing Line 3 crude oil 

pipeline between Neche, North Dakota and Superior, Wisconsin. The U.S. L3R Program, along with 

the Canadian L3R Program discussed above, will support the safety and operational reliability of the 

mainline system, enhance system flexibility, and allow the Company and EEP to optimize throughput 

on the mainline. The L3R Program is expected to achieve the original capacity of approximately 

760,000 bpd. Construction commenced on the Wisconsin portion of the U.S. L3R Program in late 

June 2017 and will be substantially complete in February 2018. For additional updates on the project, 

refer to Growth Projects - Regulatory Matters.

CANADA

Zama
Zama

Fort McMurray
Fort McMurray

Cheecham
Cheecham

Edmonton
Edmonton

Hardisty
Hardisty

5

Fort McMurray
Fort McMurray

8

9

Cheecham
Cheecham

5

3

11
1

6

10
3

Edmonton
Edmonton

4

7

Hardisty
Hardisty

Clearbrook
Clearbrook

6

Superior
Superior

Montreal
Montreal

4

Sarnia
Sarnia

Toronto
Toronto

Buffalo
Buffalo

Chicago
Chicago

Toledo
Toledo

Patoka
Patoka

Wood
Wood
River
River

Minot

2

Cushing
Cushing

UNITED  S TATE S
UNITED S TATES
OF AM ERICA
OF AM ERICA

M

E

X

I

C

0

Houston
Houston

New Orleans
New Orleans

Assets in Operation 

Projects Placed into Service in 2017

Growth Projects

70

71

GAS TRANSMISSION AND MIDSTREAM
The following commercially secured growth projects were placed into service in 2017:

•  Sabal Trail (SEP) - a natural gas pipeline connecting Alexander City, Alabama to the Central Florida 
Hub in Kissimmee, Florida that provides capacity of approximately 1.1 billion cubic feet per day      
(bcf/d) of new capacity to access onshore shale gas supplies once approved future expansions are 
completed. Facilities include a new 749-kilometer (465-mile) pipeline, laterals and various 
compressor stations. The project was placed into service on July 3, 2017.

•  Access South, Adair Southwest and Lebanon Extension (SEP) - natural gas pipeline extensions 
connecting the Appalachian region of the United States to markets in the Midwest and Southeast 
regions of the United States. The combined projects provide an initial capacity of 622 million cubic 
feet per day (mmcf/d) of gas to customers in Ohio, Kentucky and Mississippi. The Lebanon extension 
was placed into service early, on August 1, 2017 and the majority of the Access and Adair portions of 
the project were placed in service in November 2017 with the final 20 mmcf/d expected to be placed 
in service in the first quarter of 2018.

The following commercially secured growth projects are expected to be placed into service in 2018 to 
2020:

•  Atlantic Bridge (SEP) - expansion of SEP’s Algonquin Gas Transmission systems to transport 133 

mmcf/d of natural gas to the New England Region. The expansion primarily consists of the 
replacement of a natural gas pipeline, meter station additions, compression additions in Connecticut, 
and a new compressor station in Massachusetts. The Connecticut portion of the project was placed 
into service in the fourth quarter of 2017. The remainder of the project is expected to be in-service 
during the fourth quarter of 2018.

•  NEXUS (SEP) - a natural gas pipeline system connecting SEP’s Texas Eastern pipeline system in 

Ohio to the Union Gas Dawn hub in Ontario, via Vector Pipeline L.P., that will provide capacity of up 
to approximately 1.5 bcf/d. The project received a Notice to Proceed from the Federal Energy 
Regulatory Commission (FERC) in August 2017 and construction activities have commenced.

•  Reliability and Maintainability Project - a natural gas pipeline project designed to enhance the 

performance of the southern segment of the British Columbia Pipeline system to accommodate the 
increased base load on the system. The project involves adding new compressor units at three 
compressor stations along the pipeline system as well as upgrading existing pipeline crossovers and 
adding new crossovers at key locations. During 2017, six crossovers were placed into service.

•  Valley Crossing Pipeline - a natural gas pipeline connecting the Agua Dulce hub in Texas to an 

offshore tie-in with the Sur de Texas-Tuxpan project, which is being constructed by a third party. The 
project will help Mexico meet its growing gas fired electric generation needs by providing capacity of 
up to approximately 2.6 bcf/d.

•  Spruce Ridge Program - natural gas pipeline expansion of Westcoast Energy Inc.’s British Columbia 
Pipeline in northern British Columbia, which consists of the Aitken Creek Looping project and the 
Spruce Ridge Expansion project. The combined projects will provide additional capacity of up to 402 
mmcf/d.

•  T-South Expansion Program - natural gas pipeline expansion of Westcoast Energy Inc.’s T-South 
system that will provide additional capacity of approximately 190 mmcf/d into the Huntington/Sumas 
market at the United States/Canada border.

72

73

GAS TRANSMISSION AND MIDSTREAM

The following commercially secured growth projects were placed into service in 2017:

•  Sabal Trail (SEP) - a natural gas pipeline connecting Alexander City, Alabama to the Central Florida 

Hub in Kissimmee, Florida that provides capacity of approximately 1.1 billion cubic feet per day      

(bcf/d) of new capacity to access onshore shale gas supplies once approved future expansions are 

completed. Facilities include a new 749-kilometer (465-mile) pipeline, laterals and various 

compressor stations. The project was placed into service on July 3, 2017.

•  Access South, Adair Southwest and Lebanon Extension (SEP) - natural gas pipeline extensions 

connecting the Appalachian region of the United States to markets in the Midwest and Southeast 

regions of the United States. The combined projects provide an initial capacity of 622 million cubic 

feet per day (mmcf/d) of gas to customers in Ohio, Kentucky and Mississippi. The Lebanon extension 

was placed into service early, on August 1, 2017 and the majority of the Access and Adair portions of 

the project were placed in service in November 2017 with the final 20 mmcf/d expected to be placed 

in service in the first quarter of 2018.

The following commercially secured growth projects are expected to be placed into service in 2018 to 

2020:

•  Atlantic Bridge (SEP) - expansion of SEP’s Algonquin Gas Transmission systems to transport 133 

mmcf/d of natural gas to the New England Region. The expansion primarily consists of the 

replacement of a natural gas pipeline, meter station additions, compression additions in Connecticut, 

and a new compressor station in Massachusetts. The Connecticut portion of the project was placed 

into service in the fourth quarter of 2017. The remainder of the project is expected to be in-service 

during the fourth quarter of 2018.

•  NEXUS (SEP) - a natural gas pipeline system connecting SEP’s Texas Eastern pipeline system in 

Ohio to the Union Gas Dawn hub in Ontario, via Vector Pipeline L.P., that will provide capacity of up 

to approximately 1.5 bcf/d. The project received a Notice to Proceed from the Federal Energy 

Regulatory Commission (FERC) in August 2017 and construction activities have commenced.

•  Reliability and Maintainability Project - a natural gas pipeline project designed to enhance the 

performance of the southern segment of the British Columbia Pipeline system to accommodate the 

increased base load on the system. The project involves adding new compressor units at three 

compressor stations along the pipeline system as well as upgrading existing pipeline crossovers and 

adding new crossovers at key locations. During 2017, six crossovers were placed into service.

•  Valley Crossing Pipeline - a natural gas pipeline connecting the Agua Dulce hub in Texas to an 

offshore tie-in with the Sur de Texas-Tuxpan project, which is being constructed by a third party. The 

project will help Mexico meet its growing gas fired electric generation needs by providing capacity of 

up to approximately 2.6 bcf/d.

•  Spruce Ridge Program - natural gas pipeline expansion of Westcoast Energy Inc.’s British Columbia 

Pipeline in northern British Columbia, which consists of the Aitken Creek Looping project and the 

Spruce Ridge Expansion project. The combined projects will provide additional capacity of up to 402 

mmcf/d.

•  T-South Expansion Program - natural gas pipeline expansion of Westcoast Energy Inc.’s T-South 

system that will provide additional capacity of approximately 190 mmcf/d into the Huntington/Sumas 

market at the United States/Canada border.

14

12

15

Vancouver
Vancouver

Calgary
Calgary

CANADA

Superior
Superior

Montreal
Montreal

Halifax
Halifax

10

UNITED STATES
UNITED STATES
OF AMERICA
OF AMERICA

Chicago
Chicago

Cushing
Cushing

M

E

X

I

C

0

Houston
Houston

13

New Orleans
New Orleans

Toronto
Toronto

Sarnia
Sarnia

Boston
Boston

New York
New York

9

11

8

Assets in Operation 

Projects Placed into Service in 2017

Growth Projects

Gas Plants in Operation

72

73

GAS DISTRIBUTION
In addition to normal course investment to support customer additions, the following commercially 
secured growth projects were placed into service in 2017:

• 

2017 Dawn-Parkway Expansion - the expansion of the existing Dawn-Parkway pipeline system, 
which provides transportation service from Dawn to the Greater Toronto Area, through the addition of 
new compressors at each of the Dawn, Lobo and Bright compressor stations in Ontario. The project 
provides additional capacity of approximately 419 mmcf/d and was placed into service in October 
2017.

•  Panhandle Reinforcement Project - the expansion of the existing Panhandle pipeline from Dawn to 

the Dover transmission station in Chatham-Kent, Ontario. The project serves firm demand growth in 
southwestern Ontario and was placed into service in November 2017.

2019:

Montreal
Montreal

Toronto
Toronto

Sarnia
Sarnia

18

19

GREEN POWER AND TRANSMISSION

The following commercially secured growth project was placed into service in 2017:

•  Chapman Ranch Wind Project - a wind project that consists of 81 Acciona Windpower North 

America, LLC (Acciona) turbines located in Nueces County, Texas which generate approximately 249-

MW of power and were placed into service on October 25, 2017. Acciona provides turbine operations 

and maintenance services under a five-year fixed-price contract with an option to extend. The project 

is backed by a 12-year power offtake agreement.

The following commercially secured growth projects are expected to be placed into service in 2018 and 

•  Rampion Offshore Wind Project - a wind project located off the Sussex coast in the United 

Kingdom, consisting of 116 turbines, which will generate approximately 400-MW when complete. We 

hold an effective 24.9% interest, United Kingdom’s Green Investment Bank plc holds a 25% interest 

and E.ON SE holds the remaining 50.1% interest in the project, which was developed and is being 

constructed by E.ON Climate & Renewables UK Limited, a subsidiary of E.ON SE. The Rampion 

Offshore Wind Project is backed by revenues from the United Kingdom’s fixed-price Renewable 

Obligation certificates program and a 15-year power purchase agreement. The project generated first 

power in November 2017 and is currently in the commissioning phase.

•  Hohe See Offshore Wind Project and Expansion - a wind project located in the North Sea, off the 

coast of Germany that will generate approximately 497-MW, with an additional 112-MW from the 

expansion. The Hohe See Offshore Wind Project and Expansion will be constructed under fixed-price 

engineering, procurement, construction and installation contracts, which have been secured with key 

suppliers. The Hohe See Project and Expansion is backed by a government legislated 20-year 

revenue support mechanism.

74

75

GAS DISTRIBUTION

In addition to normal course investment to support customer additions, the following commercially 

secured growth projects were placed into service in 2017:

• 

2017 Dawn-Parkway Expansion - the expansion of the existing Dawn-Parkway pipeline system, 

which provides transportation service from Dawn to the Greater Toronto Area, through the addition of 

new compressors at each of the Dawn, Lobo and Bright compressor stations in Ontario. The project 

provides additional capacity of approximately 419 mmcf/d and was placed into service in October 

2017.

•  Panhandle Reinforcement Project - the expansion of the existing Panhandle pipeline from Dawn to 

the Dover transmission station in Chatham-Kent, Ontario. The project serves firm demand growth in 

southwestern Ontario and was placed into service in November 2017.

GREEN POWER AND TRANSMISSION
The following commercially secured growth project was placed into service in 2017:

•  Chapman Ranch Wind Project - a wind project that consists of 81 Acciona Windpower North 

America, LLC (Acciona) turbines located in Nueces County, Texas which generate approximately 249-
MW of power and were placed into service on October 25, 2017. Acciona provides turbine operations 
and maintenance services under a five-year fixed-price contract with an option to extend. The project 
is backed by a 12-year power offtake agreement.

The following commercially secured growth projects are expected to be placed into service in 2018 and 
2019:

•  Rampion Offshore Wind Project - a wind project located off the Sussex coast in the United 

Kingdom, consisting of 116 turbines, which will generate approximately 400-MW when complete. We 
hold an effective 24.9% interest, United Kingdom’s Green Investment Bank plc holds a 25% interest 
and E.ON SE holds the remaining 50.1% interest in the project, which was developed and is being 
constructed by E.ON Climate & Renewables UK Limited, a subsidiary of E.ON SE. The Rampion 
Offshore Wind Project is backed by revenues from the United Kingdom’s fixed-price Renewable 
Obligation certificates program and a 15-year power purchase agreement. The project generated first 
power in November 2017 and is currently in the commissioning phase.

•  Hohe See Offshore Wind Project and Expansion - a wind project located in the North Sea, off the 
coast of Germany that will generate approximately 497-MW, with an additional 112-MW from the 
expansion. The Hohe See Offshore Wind Project and Expansion will be constructed under fixed-price 
engineering, procurement, construction and installation contracts, which have been secured with key 
suppliers. The Hohe See Project and Expansion is backed by a government legislated 20-year 
revenue support mechanism.

74

75

North Sea

22

The following projects have been announced by us, but have not yet met our criteria to be classified as 

OTHER ANNOUNCED PROJECTS UNDER DEVELOPMENT

Irish Sea

14

12

15

Vancouver
Vancouver

Calgary
Calgary

Calgary
Calgary

CANADA

CAN ADA

UNITED 
KINGDOM

London

Brighton
and Hove

21

English Channel

Amsterdam

THE 
NETHERLANDS

Brussels

Cologne

FRANCE

BELGIUM GERMANY

Superior
Superior

Superior

Superior

Montreal
Montreal

Halifax
Halifax

Montreal
Montreal
10

Toronto
Toronto

Sarnia
Sarnia

Toronto
Toronto

Boston
Boston

Chicago
Chicago

Sarnia
Sarnia

Chicago
Chicago

11

Toledo
Toledo
9

New York
New York

UNITED STATES
UNITED STATES
OF AMERICA
OF AMERICA
UNITE D STATE S
UNITE D STATE S
OF AME RICA
OF AME RICA

DenverDenver

Las Vegas
Las Vegas

Cushing
Cushing

Cushing
Cushing

New Orleans
New Orleans

8

M

E

X

M

I

C

E

0

X

I

C

0

Houston
Houston

13

Houston
Houston

20

Power Transmission in Operation

Wind Assets in Operation

Solar Assets in Operation

Growth Projects—Wind

commercially secured:

LIQUIDS PIPELINES

•  Gray Oak Pipeline Project - a 385,000 bpd pipeline system to provide producers and other shippers 

the opportunity to secure crude oil transportation from West Texas to the destination markets 

of Corpus Christi, Freeport, and Houston, Texas with connectivity to over 3 million bpd of refining 

capacity and multiple dock facilities capable of crude oil exports. The project is a joint development 

with Phillips 66 and would be placed into service during the second half of 2019 depending on 

shipper interest expressed in the recently closed open season.

GAS TRANSMISSION AND MIDSTREAM

•  Gulf Coast Express Pipeline Project - a natural gas pipeline connecting the Waha, Texas area to 

Agua Dulce, Texas that will provide capacity up to approximately 1.7 bcf/d. The project is a joint 

development between our equity investment DCP Midstream, Kinder Morgan Texas Pipeline LLC and 

an affiliate of Targa Resources Corp, and is expected to be placed into service during the second half 

of 2019, subject to obtaining sufficient shipper commitments.

•  Alliance Pipeline Expansion Project - Alliance Pipeline announced a non-binding request for 

expressions of interest for additional transportation service on the Alliance Pipeline Canada and 

Alliance Pipeline US systems. Alliance Pipeline continues to engage with interested parties and 

assess the addition of more compression facilities along the system in order to increase throughput 

capacity by up to 500 mmcf/d. The projected in-service date for the potential capacity expansion is 

the second half of 2021. 

•  Access Northeast - Access Northeast is a project that will bring affordable energy to New England 

consumers. Natural gas pipeline capacity scarcity and system reliability remains a primary issue for 

New England and one that must be resolved for the region to meet its energy supply needs. The 

project's partners continue to pursue a viable commercial and operational model to provide natural 

gas to the region. 

GREEN POWER AND TRANSMISSION

•  Éolien Maritime France SAS - a 50% interest in Éolien Maritime France SAS (EMF), a French 

offshore wind development company, which is co-owned by EDF Energies Nouvelles, a subsidiary of 

Électricité de France S.A. EMF holds licenses for three large-scale offshore wind farms off the coast 

of France that would generate approximately 1,428 MW. The development of these projects is subject 

to a final investment decision and regulatory approvals, the timing of which is not yet certain.

We also have a large portfolio of additional projects under development that have not yet progressed to 

the point of public announcement.

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77

 
 
OTHER ANNOUNCED PROJECTS UNDER DEVELOPMENT

The following projects have been announced by us, but have not yet met our criteria to be classified as 
commercially secured:

LIQUIDS PIPELINES

•  Gray Oak Pipeline Project - a 385,000 bpd pipeline system to provide producers and other shippers 

the opportunity to secure crude oil transportation from West Texas to the destination markets 
of Corpus Christi, Freeport, and Houston, Texas with connectivity to over 3 million bpd of refining 
capacity and multiple dock facilities capable of crude oil exports. The project is a joint development 
with Phillips 66 and would be placed into service during the second half of 2019 depending on 
shipper interest expressed in the recently closed open season.

GAS TRANSMISSION AND MIDSTREAM

•  Gulf Coast Express Pipeline Project - a natural gas pipeline connecting the Waha, Texas area to 
Agua Dulce, Texas that will provide capacity up to approximately 1.7 bcf/d. The project is a joint 
development between our equity investment DCP Midstream, Kinder Morgan Texas Pipeline LLC and 
an affiliate of Targa Resources Corp, and is expected to be placed into service during the second half 
of 2019, subject to obtaining sufficient shipper commitments.

•  Alliance Pipeline Expansion Project - Alliance Pipeline announced a non-binding request for 
expressions of interest for additional transportation service on the Alliance Pipeline Canada and 
Alliance Pipeline US systems. Alliance Pipeline continues to engage with interested parties and 
assess the addition of more compression facilities along the system in order to increase throughput 
capacity by up to 500 mmcf/d. The projected in-service date for the potential capacity expansion is 
the second half of 2021. 

•  Access Northeast - Access Northeast is a project that will bring affordable energy to New England 
consumers. Natural gas pipeline capacity scarcity and system reliability remains a primary issue for 
New England and one that must be resolved for the region to meet its energy supply needs. The 
project's partners continue to pursue a viable commercial and operational model to provide natural 
gas to the region. 

GREEN POWER AND TRANSMISSION

•  Éolien Maritime France SAS - a 50% interest in Éolien Maritime France SAS (EMF), a French 

offshore wind development company, which is co-owned by EDF Energies Nouvelles, a subsidiary of 
Électricité de France S.A. EMF holds licenses for three large-scale offshore wind farms off the coast 
of France that would generate approximately 1,428 MW. The development of these projects is subject 
to a final investment decision and regulatory approvals, the timing of which is not yet certain.

We also have a large portfolio of additional projects under development that have not yet progressed to 
the point of public announcement.

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77

 
 
CAPITAL MARKET ACCESS

We ensure ready access to capital markets, subject to market conditions, through maintenance of shelf 

prospectuses that allow for issuance of long-term debt, equity and other forms of long-term capital when 

market conditions are attractive. In accordance with our funding plan, we completed the following 

(in millions of Canadian dollars, unless stated otherwise)

Type of Issuance

issuances in 2017:

Entity

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Enbridge Inc.

Common shares (via share exchange*)

Common shares (by private placement)

Fixed-to-floating rate subordinated notes

Preference shares

Floating rate notes

Medium-term notes

US$ Floating rate notes

US$ Senior notes

US$ Fixed-to-floating rate subordinated notes

Enbridge Income Fund Holdings Inc. Common shares

Enbridge Income Fund Holdings Inc. Common shares (Secondary offering by Enbridge)

Enbridge Gas Distribution Inc. (EGD) Medium-term notes

Spectra Energy Partners, LP

Union Gas Limited

Floating rate notes

Medium-term notes

* In connection with the Merger Transaction

On January 9, 2018, Texas Eastern Transmission, LP, a wholly-owned operating subsidiary of SEP, 

completed an offering of US$800 million of senior notes, which consisted of two US$400 million tranches 

with fixed interest rates of 3.50% and 4.15% which mature in 2028 and 2048, respectively. 

Amount

37,429

1,500

500

1,650

750

1,200

US$1,000

US$1,200

US$1,400

575

575

300

500

US$400

GROWTH PROJECTS - REGULATORY MATTERS

Lakehead System Mainline Expansion (EEP)
On October 16, 2017, the United States Department of State issued a Presidential permit to EEP to 
operate Line 67 at its design capacity of 888,889 bpd at the international border of the United States and 
Canada near Neche, North Dakota. 

Canadian Line 3 Replacement Program (the Fund Group)
In December 2016, the Manitoba Metis Federation (MMF) and the Association of Manitoba Chiefs (AMC) 
applied to the Federal Court of Appeal for leave, which was subsequently granted, to judicially review the 
Government of Canada’s decision to approve the Canadian L3R Program. On July 4, 2017, the MMF 
discontinued its judicial review application. On October 25, 2017, the AMC discontinued its judicial review 
application. As a result, no further challenges to the Government of Canada's decision to approve the 
Canadian L3R Program may be brought by any party.  

All required pre-construction filings have been approved by the NEB.

United States Line 3 Replacement Program (EEP)
EEP is in the process of obtaining the appropriate permits for constructing the U.S. L3R Program in 
Minnesota. The project requires both a Certificate of Need and an approval of the pipeline’s route (Route 
Permit) from the MNPUC. The MNPUC found both the Certificate of Need and Route Permit applications 
for the U.S. L3R Program through Minnesota to be complete. On February 1, 2016, the MNPUC issued a 
written order requiring the Minnesota Department of Commerce (DOC) to prepare an Environmental 
Impact Statement (EIS) before the filing of intervenor testimony in the Certificate of Need and Route 
Permit processes. The DOC issued the final EIS on August 17, 2017. The MNPUC determined the final 
EIS to be inadequate in four specific areas on December 7, 2017. The DOC provided a supplemental EIS 
on February 12, 2018, and the MNPUC will determine its adequacy in the second quarter of 2018. In the 
parallel Certificate of Need and Route Permit dockets, public and evidentiary hearings were held at 
locations along the proposed route and in Saint Paul, Minnesota from September to November 2017 and 
are now complete. The MNPUC is expected to vote on the Certificate of Need and Route Permit at the 
end of the second quarter of 2018. 

LIQUIDITY AND CAPITAL RESOURCES

The maintenance of financial strength and flexibility is fundamental to our growth strategy, particularly in 
light of the significant number and size of capital projects currently secured or under development. Access 
to timely funding from capital markets could be limited by factors outside our control, including but not 
limited to financial market volatility resulting from economic and political events both inside and outside 
North America. To mitigate such risks, we actively manage financial plans and strategies to ensure we 
maintain sufficient liquidity to meet routine operating and future capital requirements. In the near term, we 
generally expect to utilize cash from operations together with commercial paper issuance and/or credit 
facility draws and the proceeds of capital market offerings to fund liabilities as they become due, finance 
capital expenditures, fund debt retirements and pay common and preference share dividends. We target 
to maintain sufficient liquidity through securement of committed credit facilities with a diversified group of 
banks and financial institutions to enable us to fund all anticipated requirements for approximately one 
year without accessing the capital markets.

Our financing plan is regularly updated to reflect evolving capital requirements and financial market 
conditions and identifies a variety of potential sources of debt and equity funding alternatives, including 
utilization of our sponsored vehicles. For additional information, refer to Sponsored Vehicles below.

78

79

 
 
 
 
GROWTH PROJECTS - REGULATORY MATTERS

Lakehead System Mainline Expansion (EEP)

On October 16, 2017, the United States Department of State issued a Presidential permit to EEP to 

operate Line 67 at its design capacity of 888,889 bpd at the international border of the United States and 

Canada near Neche, North Dakota. 

Canadian Line 3 Replacement Program (the Fund Group)

In December 2016, the Manitoba Metis Federation (MMF) and the Association of Manitoba Chiefs (AMC) 

applied to the Federal Court of Appeal for leave, which was subsequently granted, to judicially review the 

Government of Canada’s decision to approve the Canadian L3R Program. On July 4, 2017, the MMF 

discontinued its judicial review application. On October 25, 2017, the AMC discontinued its judicial review 

application. As a result, no further challenges to the Government of Canada's decision to approve the 

Canadian L3R Program may be brought by any party.  

All required pre-construction filings have been approved by the NEB.

United States Line 3 Replacement Program (EEP)

EEP is in the process of obtaining the appropriate permits for constructing the U.S. L3R Program in 

Minnesota. The project requires both a Certificate of Need and an approval of the pipeline’s route (Route 

Permit) from the MNPUC. The MNPUC found both the Certificate of Need and Route Permit applications 

for the U.S. L3R Program through Minnesota to be complete. On February 1, 2016, the MNPUC issued a 

written order requiring the Minnesota Department of Commerce (DOC) to prepare an Environmental 

Impact Statement (EIS) before the filing of intervenor testimony in the Certificate of Need and Route 

Permit processes. The DOC issued the final EIS on August 17, 2017. The MNPUC determined the final 

EIS to be inadequate in four specific areas on December 7, 2017. The DOC provided a supplemental EIS 

on February 12, 2018, and the MNPUC will determine its adequacy in the second quarter of 2018. In the 

parallel Certificate of Need and Route Permit dockets, public and evidentiary hearings were held at 

locations along the proposed route and in Saint Paul, Minnesota from September to November 2017 and 

are now complete. The MNPUC is expected to vote on the Certificate of Need and Route Permit at the 

end of the second quarter of 2018. 

LIQUIDITY AND CAPITAL RESOURCES

The maintenance of financial strength and flexibility is fundamental to our growth strategy, particularly in 

light of the significant number and size of capital projects currently secured or under development. Access 

to timely funding from capital markets could be limited by factors outside our control, including but not 

limited to financial market volatility resulting from economic and political events both inside and outside 

North America. To mitigate such risks, we actively manage financial plans and strategies to ensure we 

maintain sufficient liquidity to meet routine operating and future capital requirements. In the near term, we 

generally expect to utilize cash from operations together with commercial paper issuance and/or credit 

facility draws and the proceeds of capital market offerings to fund liabilities as they become due, finance 

capital expenditures, fund debt retirements and pay common and preference share dividends. We target 

to maintain sufficient liquidity through securement of committed credit facilities with a diversified group of 

banks and financial institutions to enable us to fund all anticipated requirements for approximately one 

year without accessing the capital markets.

Our financing plan is regularly updated to reflect evolving capital requirements and financial market 

conditions and identifies a variety of potential sources of debt and equity funding alternatives, including 

utilization of our sponsored vehicles. For additional information, refer to Sponsored Vehicles below.

CAPITAL MARKET ACCESS
We ensure ready access to capital markets, subject to market conditions, through maintenance of shelf 
prospectuses that allow for issuance of long-term debt, equity and other forms of long-term capital when 
market conditions are attractive. In accordance with our funding plan, we completed the following 
issuances in 2017:

Type of Issuance

Entity
(in millions of Canadian dollars, unless stated otherwise)
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Inc.
Enbridge Income Fund Holdings Inc. Common shares
Enbridge Income Fund Holdings Inc. Common shares (Secondary offering by Enbridge)
Enbridge Gas Distribution Inc. (EGD) Medium-term notes
Floating rate notes
Spectra Energy Partners, LP
Medium-term notes
Union Gas Limited
* In connection with the Merger Transaction

Common shares (via share exchange*)
Common shares (by private placement)
Preference shares
Fixed-to-floating rate subordinated notes
Floating rate notes
Medium-term notes
US$ Fixed-to-floating rate subordinated notes
US$ Floating rate notes
US$ Senior notes

Amount

37,429
1,500
500
1,650
750
1,200
US$1,000
US$1,200
US$1,400
575
575
300
US$400
500

On January 9, 2018, Texas Eastern Transmission, LP, a wholly-owned operating subsidiary of SEP, 
completed an offering of US$800 million of senior notes, which consisted of two US$400 million tranches 
with fixed interest rates of 3.50% and 4.15% which mature in 2028 and 2048, respectively. 

78

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Credit Facilities, Ratings and Liquidity
To ensure ongoing liquidity and to mitigate the risk of capital market disruption, we maintain ready access 
to funds through committed bank credit facilities and actively manage our bank funding sources to 
optimize pricing and other terms. The following table provides details of our committed credit facilities at 
December 31, 2017.

2017

Total
Facilities

Draws1

Available

Maturity

December 31,
(millions of Canadian dollars)
Enbridge Inc.2
Enbridge (U.S.) Inc.
Enbridge Energy Partners, L.P.3
Enbridge Gas Distribution Inc.
Enbridge Income Fund
Enbridge Pipelines (Southern Lights) L.L.C.
Enbridge Pipelines Inc.
Enbridge Southern Lights LP
Spectra Energy Partners, LP4,5
Union Gas Limited5
Westcoast Energy Inc.5
Total committed credit facilities
1  Includes facility draws, letters of credit and commercial paper issuances that are back-stopped by the credit facility.
2  Includes $135 million, $157 million (US$125 million) and $150 million of commitments that expire in 2018, 2018 and 2020, 

2019-2022
2019
2019-2022
2019
2020
2019
2019
2019
2022
2021
2021

2,737
490
1,820
972
766
—
1,438
—
2,824
485
—
11,532

7,353
3,590
3,289
1,016
1,500
25
3,000
5
3,133
700
400
24,011

4,616
3,100
1,469
44
734
25
1,562
5
309
215
400
12,479

respectively. 

3  Includes $219 million (US$175 million) and $232 million (US$185 million) of commitments that expire in 2018 and 2020, 

respectively. 

4  Includes $421 million (US$336 million) of commitments that expire in 2021.   
5  Committed credit facilities acquired on February 27, 2017 in conjunction with the Merger Transaction. For additional information, 

refer to Merger with Spectra Energy.

During the first quarter of 2017, Enbridge established a five-year, term credit facility for $239 million 
(¥20,000 million) with a syndicate of Japanese banks. Principal and interest on this facility have been 
converted to United States dollars using a cross currency interest rate swap.

In addition to the committed credit facilities noted above, we have $792 million of uncommitted demand 
facilities, of which $518 million were unutilized as at December 31, 2017. As at December 31, 2016, we 
had $335 million of uncommitted credit facilities, of which $177 million were unutilized. 

Our net available liquidity of $12,959 million at December 31, 2017 was inclusive of $480 million of 
unrestricted cash and cash equivalents as reported on the Consolidated Statements of Financial Position.

Our credit facility agreements and term debt indentures include standard events of default and covenant 
provisions whereby accelerated repayment and/or termination of the agreements may result if we were to 
default on payment or violate certain covenants. As at December 31, 2017, we were in compliance with 
all debt covenants and expect to continue to comply with such covenants.

Strong growth in internal cash flow, ready access to liquidity from diversified sources and a stable 
business model have enabled us to manage our credit profile. We actively monitor and manage key 
financial metrics with the objective of sustaining investment grade credit ratings from the major credit 
rating agencies and ongoing access to bank funding and term debt capital on attractive terms. Key 
measures of financial strength that are closely managed include the ability to service debt obligations 
from operating cash flow and the ratio of debt to total capital. As at December 31, 2017, our debt 
capitalization ratio was 48.3% compared with 61.8% as at December 31, 2016. The improvement in the 
ratio reflected an increase in equity that resulted from the Merger Transaction. 

80

81

During 2017, our credit ratings were affirmed as follows:

•  DBRS Limited confirmed our issuer rating and medium-term notes and unsecured debentures 

rating of BBB (high), fixed-to-floating subordinated notes rating of BBB (low), preference share 

rating of Pfd-3 (high) and commercial paper rating of R-2 (high), and changed their rating outlook 

from under review with developing implications to stable.

•  Standard & Poor’s Rating Services (S&P) affirmed our corporate credit rating and senior 

unsecured debt rating of BBB+, preference share rating of P-2 (low) and commercial paper rating 

of A-1 (low), and reaffirmed a stable outlook. S&P also affirmed our global overall short-term 

rating of A-2.

• 

In June 2017, we obtained Fitch long-term issuer default rating and senior unsecured debt rating 

of BBB+, preference share rating of BBB-, junior subordinated note rating of BBB-, and short-term 

and commercial paper rating of F2 with a stable rating outlook.

•  On December 22, 2017, Moody’s Investor Services, Inc. downgraded our issuer and senior 

unsecured ratings from Baa2 to Baa3, subordinated rating from Ba1 to Ba2, preference share 

rating from Ba1 to Ba2, commercial paper rating for Enbridge (U.S.) Inc. from P-2 to P-3, and 

changed the outlook on all of these ratings from negative to stable.

We invest surplus cash in short-term investment grade money market instruments with highly creditworthy 

counterparties. Short-term investments were $70 million as at December 31, 2017 compared with $800 

million as at December 31, 2016. The higher short-term investment balances at the end of 2016 reflect 

the temporary investment of a portion of the proceeds of capital markets offerings undertaken by us in the 

fourth quarter of 2016, pending its redeployment in our growth capital program.

There are no material restrictions on our cash. Total restricted cash of $107 million includes EGD’s and 

Union Gas’ receipt of cash from the Government of Ontario to fund its Green Investment Fund program. 

In addition, our restricted cash includes cash collateral and amounts received in respect of specific 

shipper commitments. Cash and cash equivalents held by EEP, the Fund Group and SEP are generally 

not readily accessible by us until distributions are declared and paid by these entities, which occurs 

quarterly for EEP and SEP, and monthly for the Fund Group. Further, cash and cash equivalents held by 

certain foreign subsidiaries may not be readily accessible for alternative uses by us.

Excluding current maturities of long-term debt, at December 31, 2017 and 2016 we had a negative 

working capital position of $2,538 million and $456 million, respectively. In both periods, the major 

contributing factor to the negative working capital position was the ongoing funding of our growth capital 

program.

To address this negative working capital position, we maintain significant liquidity in the form of committed 

credit facilities and other sources as previously discussed, which enable the funding of liabilities as they 

become due. As at December 31, 2017 and 2016, our net available liquidity totaled $12,959 million and 

$14,274 million, respectively, on a consolidated basis. It is anticipated that any current maturities of long-

term debt will be refinanced upon maturity.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Credit Facilities, Ratings and Liquidity

To ensure ongoing liquidity and to mitigate the risk of capital market disruption, we maintain ready access 

to funds through committed bank credit facilities and actively manage our bank funding sources to 

optimize pricing and other terms. The following table provides details of our committed credit facilities at 

December 31, 2017.

December 31,

(millions of Canadian dollars)

Enbridge Inc.2

Enbridge (U.S.) Inc.

Enbridge Energy Partners, L.P.3

Enbridge Gas Distribution Inc.

Enbridge Income Fund

Enbridge Pipelines Inc.

Enbridge Southern Lights LP

Spectra Energy Partners, LP4,5

Union Gas Limited5

Westcoast Energy Inc.5

Total committed credit facilities

Enbridge Pipelines (Southern Lights) L.L.C.

2019-2022

2019-2022

2019

2019

2020

2019

2019

2019

2022

2021

2021

Maturity

Facilities

Draws1

Available

Total

7,353

3,590

3,289

1,016

1,500

25

3,000

5

3,133

700

400

2017

2,737

490

1,820

972

766

—

1,438

—

2,824

485

—

4,616

3,100

1,469

1,562

44

734

25

5

309

215

400

1  Includes facility draws, letters of credit and commercial paper issuances that are back-stopped by the credit facility.

2  Includes $135 million, $157 million (US$125 million) and $150 million of commitments that expire in 2018, 2018 and 2020, 

24,011

11,532

12,479

respectively. 

respectively. 

3  Includes $219 million (US$175 million) and $232 million (US$185 million) of commitments that expire in 2018 and 2020, 

4  Includes $421 million (US$336 million) of commitments that expire in 2021.   

5  Committed credit facilities acquired on February 27, 2017 in conjunction with the Merger Transaction. For additional information, 

refer to Merger with Spectra Energy.

During the first quarter of 2017, Enbridge established a five-year, term credit facility for $239 million 

(¥20,000 million) with a syndicate of Japanese banks. Principal and interest on this facility have been 

converted to United States dollars using a cross currency interest rate swap.

In addition to the committed credit facilities noted above, we have $792 million of uncommitted demand 

facilities, of which $518 million were unutilized as at December 31, 2017. As at December 31, 2016, we 

had $335 million of uncommitted credit facilities, of which $177 million were unutilized. 

Our net available liquidity of $12,959 million at December 31, 2017 was inclusive of $480 million of 

unrestricted cash and cash equivalents as reported on the Consolidated Statements of Financial Position.

Our credit facility agreements and term debt indentures include standard events of default and covenant 

provisions whereby accelerated repayment and/or termination of the agreements may result if we were to 

default on payment or violate certain covenants. As at December 31, 2017, we were in compliance with 

all debt covenants and expect to continue to comply with such covenants.

Strong growth in internal cash flow, ready access to liquidity from diversified sources and a stable 

business model have enabled us to manage our credit profile. We actively monitor and manage key 

financial metrics with the objective of sustaining investment grade credit ratings from the major credit 

rating agencies and ongoing access to bank funding and term debt capital on attractive terms. Key 

measures of financial strength that are closely managed include the ability to service debt obligations 

from operating cash flow and the ratio of debt to total capital. As at December 31, 2017, our debt 

capitalization ratio was 48.3% compared with 61.8% as at December 31, 2016. The improvement in the 

ratio reflected an increase in equity that resulted from the Merger Transaction. 

During 2017, our credit ratings were affirmed as follows:

•  DBRS Limited confirmed our issuer rating and medium-term notes and unsecured debentures 
rating of BBB (high), fixed-to-floating subordinated notes rating of BBB (low), preference share 
rating of Pfd-3 (high) and commercial paper rating of R-2 (high), and changed their rating outlook 
from under review with developing implications to stable.

•  Standard & Poor’s Rating Services (S&P) affirmed our corporate credit rating and senior 

unsecured debt rating of BBB+, preference share rating of P-2 (low) and commercial paper rating 
of A-1 (low), and reaffirmed a stable outlook. S&P also affirmed our global overall short-term 
rating of A-2.
In June 2017, we obtained Fitch long-term issuer default rating and senior unsecured debt rating 
of BBB+, preference share rating of BBB-, junior subordinated note rating of BBB-, and short-term 
and commercial paper rating of F2 with a stable rating outlook.

• 

•  On December 22, 2017, Moody’s Investor Services, Inc. downgraded our issuer and senior 

unsecured ratings from Baa2 to Baa3, subordinated rating from Ba1 to Ba2, preference share 
rating from Ba1 to Ba2, commercial paper rating for Enbridge (U.S.) Inc. from P-2 to P-3, and 
changed the outlook on all of these ratings from negative to stable.

We invest surplus cash in short-term investment grade money market instruments with highly creditworthy 
counterparties. Short-term investments were $70 million as at December 31, 2017 compared with $800 
million as at December 31, 2016. The higher short-term investment balances at the end of 2016 reflect 
the temporary investment of a portion of the proceeds of capital markets offerings undertaken by us in the 
fourth quarter of 2016, pending its redeployment in our growth capital program.

There are no material restrictions on our cash. Total restricted cash of $107 million includes EGD’s and 
Union Gas’ receipt of cash from the Government of Ontario to fund its Green Investment Fund program. 
In addition, our restricted cash includes cash collateral and amounts received in respect of specific 
shipper commitments. Cash and cash equivalents held by EEP, the Fund Group and SEP are generally 
not readily accessible by us until distributions are declared and paid by these entities, which occurs 
quarterly for EEP and SEP, and monthly for the Fund Group. Further, cash and cash equivalents held by 
certain foreign subsidiaries may not be readily accessible for alternative uses by us.

Excluding current maturities of long-term debt, at December 31, 2017 and 2016 we had a negative 
working capital position of $2,538 million and $456 million, respectively. In both periods, the major 
contributing factor to the negative working capital position was the ongoing funding of our growth capital 
program.

To address this negative working capital position, we maintain significant liquidity in the form of committed 
credit facilities and other sources as previously discussed, which enable the funding of liabilities as they 
become due. As at December 31, 2017 and 2016, our net available liquidity totaled $12,959 million and 
$14,274 million, respectively, on a consolidated basis. It is anticipated that any current maturities of long-
term debt will be refinanced upon maturity.

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81

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SOURCES AND USES OF CASH

December 31,
(millions of Canadian dollars)
Operating activities
Investing activities
Financing activities
Effect of translation of foreign denominated cash and cash

equivalents

Increase/(decrease) in cash and cash equivalents

2017

2016

2015

6,584
(11,002)
3,476

(72)
(1,014)

5,211
(5,192)
840

(19)
840

4,571
(7,933)
3,074

143
(145)

Significant sources and uses of cash for the years ended December 31, 2017 and 2016 are summarized 
below:

Operating Activities
2017 

•  The growth in cash flow delivered by operations in 2017 is a reflection of the positive operating 
factors discussed under Results of Operations, which primarily included contributions from new 
assets of approximately $2,574 million following the completion of the Merger Transaction.
•  For the year ended, partially offsetting the increase in cash flows from operating activities are 
transaction costs in connection with the Merger Transaction, as well as employee severance 
costs in relation to our enterprise-wide reduction of workforce.

•  Changes in operating assets and liabilities to $314 million from $358 million for the years ended 

December 31, 2017 and 2016, respectively, reflected negative working capital in each of those 
years. Our operating assets and liabilities fluctuate in the normal course due to various factors 
including fluctuations in commodity prices and activity levels within the Energy Services and Gas 
Distribution segments, the timing of tax payments, as well as timing of cash receipts and 
payments. 

2016 

•  The growth in cash flow delivered by operations in 2016 was a reflection of the positive operating 
factors discussed under Results of Operations, which primarily included stronger contributions 
from the Liquids Pipelines segment, partially offset by higher financing costs resulting from the 
incurrence of incremental debt to fund asset growth and the impact of refinancing construction 
debt with longer-term debt financing.

•  Changes in operating assets and liabilities included within operating activities were $358 million 
for the year ended December 31, 2016 compared with $645 million for the comparative 2015 
year. Our operating assets and liabilities fluctuate in the normal course due to various factors 
including fluctuations in commodity prices and activity levels within the Energy Services and Gas 
Distribution segments, the timing of tax payments, general variations in activity levels within our 
businesses, as well as timing of cash receipts and payments.

Investing Activities
We continue with the execution of our growth capital program which is further described in Growth 
Projects – Commercially Secured Projects. The timing of project approval, construction and in-service 
dates impacts the timing of cash requirements.

A summary of additions to property, plant and equipment for the years ended December 31, 2017, 2016 

and 2015 is set out below:

Year ended December 31,

(millions of Canadian dollars)

Liquids Pipelines

Gas Transmission and Midstream

Gas Distribution

Green Power and Transmission

Energy Services

Eliminations and Other

Total capital expenditures

2017

2016

2015

3,956

5,882

2,797

3,883

1,177

321

1

108

8,287

176

713

251

—

32

385

858

68

—

80

5,128

7,273

2017

2016 

•  The increase in cash used in investing activities was primarily attributable to capital expenditures 

of $8,287 million compared with $5,128 million for the comparable period, which include capital 

expenditures on assets and growth projects acquired through the Merger Transaction, and 

increased investment in equity investments. During the first half of 2017, we paid cash 

consideration of $2.0 billion (US $1.5 billion) for the acquisition of an interest in the Bakken 

Pipeline System. In addition, we also made an equity investment of $0.5 billion in connection with 

our 50% interest in the Hohe See Offshore Wind Project.

•  The above increase in cash usage was partially offset by cash acquired in the Merger Transaction 

in the first quarter of 2017, proceeds from the disposition of the Ozark Pipeline, Sandpiper Project 

and Olympic Pipeline in 2017.

•  The timing of projects approval, construction and in-service dates impacted the timing of cash 

requirements. For the year ended December 31, 2016, additions to property, plant and equipment 

resulted in cash expenditures of $5,128 million compared with $7,273 million for the year ended 

December 31, 2015. The year-over-year decrease reflected the successful completion of growth 

projects in 2015, including the Edmonton to Hardisty Expansion, Southern Access Extension and 

phases of the Eastern Access Program.

•  Also contributing to the decrease in year-over-year cash used in investing activities were 

proceeds received from disposition of assets. For the year ended December 31, 2016, proceeds 

from dispositions were $1,379 million compared with $146 million for the year ended 

December 31, 2015. The majority of the proceeds in 2016 related to the sale of the South Prairie 

Region assets completed in December 2016.

•  Partially offsetting the above factors was higher spending in 2016 for acquisitions. During the 

second quarter of 2016, we made an initial equity investment in and advanced an affiliate loan to 

acquire a 50% interest in a French offshore wind development company and fund the ongoing 

development costs of that company.

Financing Activities

2017

The increase in net cash generated from financing activities resulted from the following factors:

•  We issued a series of medium term fixed and floating rate notes, the proceeds of which were 

used to repay maturing term notes and credit facilities and to finance growth capital programs. 

For the year ended 2017, proceeds from term note issuances were primarily used to repay credit 

facilities and redeem tender offers for Spectra Energy’s outstanding senior unsecured notes as 

discussed in Liquidity and Capital Resources - Capital Market Access.

•  The change in cash generated from financing activities reflected overall higher cash contributions 

from redeemable noncontrolling interests of $1,178 million compared with $591 million in the 

comparable period attributable to our holdings in ENF equity. Cash contributions were also higher 

82

83

 
 
 
 
 
 
 
 
 
 
 
2017

2016

2015

6,584

(11,002)

3,476

(72)

(1,014)

5,211

(5,192)

840

(19)

840

4,571

(7,933)

3,074

143

(145)

SOURCES AND USES OF CASH

December 31,

(millions of Canadian dollars)

Operating activities

Investing activities

Financing activities

equivalents

below:

2017 

Operating Activities

Effect of translation of foreign denominated cash and cash

Increase/(decrease) in cash and cash equivalents

Significant sources and uses of cash for the years ended December 31, 2017 and 2016 are summarized 

•  The growth in cash flow delivered by operations in 2017 is a reflection of the positive operating 

factors discussed under Results of Operations, which primarily included contributions from new 

assets of approximately $2,574 million following the completion of the Merger Transaction.

•  For the year ended, partially offsetting the increase in cash flows from operating activities are 

transaction costs in connection with the Merger Transaction, as well as employee severance 

costs in relation to our enterprise-wide reduction of workforce.

•  Changes in operating assets and liabilities to $314 million from $358 million for the years ended 

December 31, 2017 and 2016, respectively, reflected negative working capital in each of those 

years. Our operating assets and liabilities fluctuate in the normal course due to various factors 

including fluctuations in commodity prices and activity levels within the Energy Services and Gas 

Distribution segments, the timing of tax payments, as well as timing of cash receipts and 

payments. 

2016 

•  The growth in cash flow delivered by operations in 2016 was a reflection of the positive operating 

factors discussed under Results of Operations, which primarily included stronger contributions 

from the Liquids Pipelines segment, partially offset by higher financing costs resulting from the 

incurrence of incremental debt to fund asset growth and the impact of refinancing construction 

debt with longer-term debt financing.

•  Changes in operating assets and liabilities included within operating activities were $358 million 

for the year ended December 31, 2016 compared with $645 million for the comparative 2015 

year. Our operating assets and liabilities fluctuate in the normal course due to various factors 

including fluctuations in commodity prices and activity levels within the Energy Services and Gas 

Distribution segments, the timing of tax payments, general variations in activity levels within our 

businesses, as well as timing of cash receipts and payments.

Investing Activities

We continue with the execution of our growth capital program which is further described in Growth 

Projects – Commercially Secured Projects. The timing of project approval, construction and in-service 

dates impacts the timing of cash requirements.

A summary of additions to property, plant and equipment for the years ended December 31, 2017, 2016 
and 2015 is set out below:

Year ended December 31,
(millions of Canadian dollars)
Liquids Pipelines
Gas Transmission and Midstream
Gas Distribution
Green Power and Transmission
Energy Services
Eliminations and Other
Total capital expenditures

2017

2017

2016

2015

2,797
3,883
1,177
321
1
108
8,287

3,956
176
713
251
—
32
5,128

5,882
385
858
68
—
80
7,273

•  The increase in cash used in investing activities was primarily attributable to capital expenditures 

of $8,287 million compared with $5,128 million for the comparable period, which include capital 
expenditures on assets and growth projects acquired through the Merger Transaction, and 
increased investment in equity investments. During the first half of 2017, we paid cash 
consideration of $2.0 billion (US $1.5 billion) for the acquisition of an interest in the Bakken 
Pipeline System. In addition, we also made an equity investment of $0.5 billion in connection with 
our 50% interest in the Hohe See Offshore Wind Project.

•  The above increase in cash usage was partially offset by cash acquired in the Merger Transaction 
in the first quarter of 2017, proceeds from the disposition of the Ozark Pipeline, Sandpiper Project 
and Olympic Pipeline in 2017.

2016 

•  The timing of projects approval, construction and in-service dates impacted the timing of cash 

requirements. For the year ended December 31, 2016, additions to property, plant and equipment 
resulted in cash expenditures of $5,128 million compared with $7,273 million for the year ended 
December 31, 2015. The year-over-year decrease reflected the successful completion of growth 
projects in 2015, including the Edmonton to Hardisty Expansion, Southern Access Extension and 
phases of the Eastern Access Program.

•  Also contributing to the decrease in year-over-year cash used in investing activities were 

proceeds received from disposition of assets. For the year ended December 31, 2016, proceeds 
from dispositions were $1,379 million compared with $146 million for the year ended 
December 31, 2015. The majority of the proceeds in 2016 related to the sale of the South Prairie 
Region assets completed in December 2016.

•  Partially offsetting the above factors was higher spending in 2016 for acquisitions. During the 

second quarter of 2016, we made an initial equity investment in and advanced an affiliate loan to 
acquire a 50% interest in a French offshore wind development company and fund the ongoing 
development costs of that company.

Financing Activities
2017
The increase in net cash generated from financing activities resulted from the following factors:

•  We issued a series of medium term fixed and floating rate notes, the proceeds of which were 

used to repay maturing term notes and credit facilities and to finance growth capital programs. 
For the year ended 2017, proceeds from term note issuances were primarily used to repay credit 
facilities and redeem tender offers for Spectra Energy’s outstanding senior unsecured notes as 
discussed in Liquidity and Capital Resources - Capital Market Access.

•  The change in cash generated from financing activities reflected overall higher cash contributions 
from redeemable noncontrolling interests of $1,178 million compared with $591 million in the 
comparable period attributable to our holdings in ENF equity. Cash contributions were also higher 

82

83

 
 
 
 
 
 
 
 
 
 
 
for noncontrolling interests, which now include noncontrolling interests acquired through the 
Merger Transaction, which is more than offset by the increase in distributions to noncontrolling 
interests. The increase in distributions to noncontrolling interests was primarily attributable to the 
acquired assets, which were partially offset by the decrease in distributions resulting from the 
EEP strategic restructuring discussed under United States Sponsored Vehicle Strategy.

•  Cash provided from financing activities further increased as we completed the issuance of 33.5 
million common shares for gross proceeds of approximately $1.5 billion along with the issuance 
of 4 million preferred shares for gross proceeds of $0.5 billion.

•  For the year ended 2017, the above increases in cash were partially offset by $227 million paid to 
acquire all of the outstanding publicly-held common units of MEP during the second quarter of 
2017, as well as higher cash received from the issuance of common shares in the first quarter of 
2016, as a result of the issuance of 56 million common shares in March 2016.

•  Finally, our common share dividend payments increased in the first half of 2017, primarily due to 
the increase in the common share dividend rate effective March 2017, as well as higher number 
of common shares outstanding as a result of the issuance of approximately 75 million common 
shares in 2016 and 691 million common shares issued in connection with the Merger Transaction. 
In addition, we paid $414 million in common share dividends to the shareholders of Spectra 
Energy. These dividends were declared before the closing of the Merger Transaction but were 
paid after the closing of the Merger Transaction.

2016 

•  Our financing requirements decreased for the year ended December 31, 2016 compared with 
December 31, 2015, primarily reflecting lower expenditures on growth capital projects and the 
proceeds of asset sales. Our funding requirements are a reflection of the timing of various growth 
projects.
In 2016, our overall debt decreased by $149 million compared with an overall increase in debt of 
$3,663 million in 2015. The decrease was mainly due to lower debt requirements resulting from 
the timing of completion of various growth projects and other sources of funds, primarily the 
proceeds from our common share issuance in March 2016, which were partly utilized to reduce 
drawn credit facilities and outstanding commercial paper draws.

• 

•  The increase in common share dividends paid in 2016 was attributable to the increase in the 

common share dividend rate effective March 2016 and a higher number of common shares 
outstanding primarily as a result of the common share issuance noted above.

•  Distributions to redeemable noncontrolling interests in the Fund Group increased during 2016 

compared with the corresponding 2015 period mainly due to a higher per share distribution rate 
and a larger number of public shares outstanding in ENF. Higher distributions to noncontrolling 
interests in EEP reflected an increase to the per unit distribution in the first half of 2016 as well as 
the effects of a strengthening United States dollar versus the Canadian dollar.

Since July 2011, we have issued 310 million preference shares for gross proceeds of approximately $7.8 

Preference Share Issuances

billion with the following characteristics.

Gross Proceeds

Dividend Rate

Dividend1,9

(Canadian dollars, unless otherwise stated)

—

3-month treasury bill

plus 2.400%

$500 million

3.42%

$0.85360

June 1, 2022

Series C

Per Share

Base

Redemption

Value2

Redemption

and Conversion

Option Date2,3

Right to

Convert

Into3,4

4.89% US$1.22160

4.96% US$1.23972

US$25

US$25

4.00% US$1.00000

4.00%

$1.00000

4.40% US$1.10000

US$25

$25

US$25

4.00%

4.00%

4.00%

4.00%

4.00%

4.00%

4.40%

4.40%

4.40%

4.40%

4.40%

5.15%

4.90%

—

$1.00000

$1.00000

$1.00000

$1.00000

$1.00000

$1.00000

$1.10000

$1.10000

$1.10000

$1.10000

$1.10000

$1.28750

$1.22500

$25

$25

$25

$25

$25

$25

$25

$25

$25

$25

$25

$25

$25

$25

$25

June 1, 2022

March 1, 2018

June 1, 2018

September 1, 2018

June 1, 2022

September 1, 2022

December 1, 2018

March 1, 2019

June 1, 2019

June 1, 2018

September 1, 2019

March 1, 2019

March 1, 2019

December 1, 2019

March 1, 2020

June 1, 2020

September 1, 2020

March 1, 2022

March 1, 2023

Series B

Series E

Series G

Series I

Series K

Series M

Series O

Series Q

Series S

Series 2

Series 4

Series 6

Series 8

Series 10

Series 12

Series 14

Series 16

Series 18

Series 20

$450 million

$500 million

$350 million

US$200 million

US$400 million

$450 million

$400 million

$400 million

US$400 million

$600 million

US$200 million

$250 million

$275 million

$500 million

$350 million

$275 million

$750 million

$500 million

Series B5

Series C5

Series D6

Series F

Series H

Series J7

Series L7

Series N

Series P

Series R

Series 1

Series 3

Series 5

Series 7

Series 9

Series 11

Series 13

Series 15

Series 17

Series 198

feature.

1  The holder is entitled to receive a fixed, cumulative, quarterly preferential dividend, as declared by the Board. With the exception 

of Series A and Series C Preference Shares, such fixed dividend rate resets every five years beginning on the initial redemption 

and conversion option date. The Series 17 and Series 19 Preference Shares contain a feature where the fixed dividend rate, 

when reset every five years, will not be less than 5.15% and 4.90%, respectively. No other series of Preference Shares has this 

2  Preference Shares, Series A may be redeemed any time at our option. For all other series of Preference Shares, we may, at our 

option, redeem all or a portion of the outstanding Preference Shares for the Base Redemption Value per share plus all accrued 

and unpaid dividends on the Redemption Option Date and on every fifth anniversary thereafter.

3  The holder will have the right, subject to certain conditions, to convert their shares into Cumulative Redeemable Preference 

Shares of a specified series on a one-for-one basis on the Conversion Option Date and every fifth anniversary thereafter at an 

ascribed issue price equal to the Base Redemption Value.

4  With the exception of Series A Preference Shares, after the redemption and conversion option dates, holders may elect to receive 

quarterly floating rate cumulative dividends per share at a rate equal to: $25 x (number of days in quarter/365) x 90 day 

Government of Canada treasury bill rate + 2.4% (Series C), 2.4% (Series E), 2.5% (Series G), 2.1% (Series I), 2.7% (Series O), 

2.5% (Series Q), 2.5% (Series S), 2.4% (Series 4), 2.6% (Series 8), 2.7% (Series 10), 2.6% (Series 12), 2.7% (Series 14), 2.7% 

(Series 16), 4.1% (Series 18) or 3.2% (Series 20); or US$25 x (number of days in quarter/365) x three-month United States 

Government treasury bill rate + 3.1% (Series K), 3.2% (Series M), 3.1% (Series 2) or 2.8% (Series 6).

5  On June 1, 2017, 1,730,188 of Series B fixed rate Preference Shares were converted to Series C floating rate Preference Shares 

based upon preference share holder elections under the terms of the Series B Preference Shares. The quarterly dividend amount 

for the Series B Preference Shares was decreased to $0.21340 from $0.25000 on June 1, 2017, due to the reset of the annual 

dividend rate on every fifth anniversary of the date of issuance of the Series B Preference Shares. The quarterly dividend amount 

for the Series C Preference Shares was set at $0.18600 on June 1, 2017, $0.19571 on September 1, 2017 and $0.20342 on 

December 1, 2017, due to reset on a quarterly basis following the issuance thereof. 

6  On January 30, 2018, we announced that we do not intend to exercise our right to redeem our Series D Preference Shares on 

March 1, 2018. As a result, until February 14, 2018, the holders of such shares had the right to convert all or part of their Series D 

fixed rate Preference Shares on a one-for-one basis into Series E floating rate Preference Shares. As of February 14, 2018, less 

than the 1,000,000 Series D Preference Shares required to give effect to conversions into Series E Preference Shares were 

tendered for conversion. As a result, none of our outstanding Series D  Preference Shares will be converted into Series E 

Preference Shares on March 1, 2018. However, on March 1, 2018, the quarterly dividend amount for the Series D Preference 

Shares will be increased to $0.27875 from $0.25000, due to the reset of the annual dividend rate on every fifth anniversary of the 

date of issuance of the Series D Preference Shares. 

7  No Series J or Series L Preference Shares were converted on the June 1, 2017 and September 1, 2017 conversion option dates, 

respectively. However, the quarterly dividend amounts for the Series J and Series L Preference Shares were increased to US

$0.30540 from US$0.25000 on June 1, 2017, and to US$0.30993 from US$0.25000 on September 1, 2017, respectively, due to 

the reset of the annual dividend rate on every fifth anniversary of the date of issuance of the Series J and Serles L Preference 

Shares. 

84

85

for noncontrolling interests, which now include noncontrolling interests acquired through the 

Merger Transaction, which is more than offset by the increase in distributions to noncontrolling 

interests. The increase in distributions to noncontrolling interests was primarily attributable to the 

acquired assets, which were partially offset by the decrease in distributions resulting from the 

EEP strategic restructuring discussed under United States Sponsored Vehicle Strategy.

•  Cash provided from financing activities further increased as we completed the issuance of 33.5 

million common shares for gross proceeds of approximately $1.5 billion along with the issuance 

of 4 million preferred shares for gross proceeds of $0.5 billion.

•  For the year ended 2017, the above increases in cash were partially offset by $227 million paid to 

acquire all of the outstanding publicly-held common units of MEP during the second quarter of 

2017, as well as higher cash received from the issuance of common shares in the first quarter of 

2016, as a result of the issuance of 56 million common shares in March 2016.

•  Finally, our common share dividend payments increased in the first half of 2017, primarily due to 

the increase in the common share dividend rate effective March 2017, as well as higher number 

of common shares outstanding as a result of the issuance of approximately 75 million common 

shares in 2016 and 691 million common shares issued in connection with the Merger Transaction. 

In addition, we paid $414 million in common share dividends to the shareholders of Spectra 

Energy. These dividends were declared before the closing of the Merger Transaction but were 

paid after the closing of the Merger Transaction.

2016 

projects.

•  Our financing requirements decreased for the year ended December 31, 2016 compared with 

December 31, 2015, primarily reflecting lower expenditures on growth capital projects and the 

proceeds of asset sales. Our funding requirements are a reflection of the timing of various growth 

• 

In 2016, our overall debt decreased by $149 million compared with an overall increase in debt of 

$3,663 million in 2015. The decrease was mainly due to lower debt requirements resulting from 

the timing of completion of various growth projects and other sources of funds, primarily the 

proceeds from our common share issuance in March 2016, which were partly utilized to reduce 

drawn credit facilities and outstanding commercial paper draws.

•  The increase in common share dividends paid in 2016 was attributable to the increase in the 

common share dividend rate effective March 2016 and a higher number of common shares 

outstanding primarily as a result of the common share issuance noted above.

•  Distributions to redeemable noncontrolling interests in the Fund Group increased during 2016 

compared with the corresponding 2015 period mainly due to a higher per share distribution rate 

and a larger number of public shares outstanding in ENF. Higher distributions to noncontrolling 

interests in EEP reflected an increase to the per unit distribution in the first half of 2016 as well as 

the effects of a strengthening United States dollar versus the Canadian dollar.

Preference Share Issuances
Since July 2011, we have issued 310 million preference shares for gross proceeds of approximately $7.8 
billion with the following characteristics.

Per Share
Base
Redemption
Value2

Redemption
and Conversion
Option Date2,3

Right to
Convert
Into3,4

$25

June 1, 2022

Series C

Gross Proceeds

Dividend Rate

Dividend1,9

(Canadian dollars, unless otherwise stated)
Series B5

$500 million

—

—

$25

Series B

$0.85360

June 1, 2022

$450 million
$500 million
$350 million
US$200 million
US$400 million
$450 million
$400 million
$400 million
US$400 million
$600 million
US$200 million
$250 million
$275 million
$500 million
$350 million
$275 million
$750 million
$500 million

3.42%
3-month treasury bill
plus 2.400%
$1.00000
4.00%
$1.00000
4.00%
4.00%
$1.00000
4.89% US$1.22160
4.96% US$1.23972
$1.00000
4.00%
$1.00000
4.00%
4.00%
$1.00000
4.00% US$1.00000
4.00%
$1.00000
4.40% US$1.10000
$1.10000
4.40%
$1.10000
4.40%
$1.10000
4.40%
$1.10000
4.40%
$1.10000
4.40%
$1.28750
5.15%
$1.22500
4.90%

Series C5
Series D6
Series E
Series G
Series F
Series I
Series H
Series J7
Series K
Series L7
Series M
Series O
Series N
Series Q
Series P
Series S
Series R
Series 2
Series 1
Series 4
Series 3
Series 6
Series 5
Series 8
Series 7
Series 10
Series 9
Series 12
Series 11
Series 14
Series 13
Series 16
Series 15
Series 18
Series 17
Series 198
Series 20
1  The holder is entitled to receive a fixed, cumulative, quarterly preferential dividend, as declared by the Board. With the exception 
of Series A and Series C Preference Shares, such fixed dividend rate resets every five years beginning on the initial redemption 
and conversion option date. The Series 17 and Series 19 Preference Shares contain a feature where the fixed dividend rate, 
when reset every five years, will not be less than 5.15% and 4.90%, respectively. No other series of Preference Shares has this 
feature.

March 1, 2018
June 1, 2018
September 1, 2018
June 1, 2022
September 1, 2022
December 1, 2018
March 1, 2019
June 1, 2019
June 1, 2018
September 1, 2019
March 1, 2019
March 1, 2019
December 1, 2019
March 1, 2020
June 1, 2020
September 1, 2020
March 1, 2022
March 1, 2023

$25
$25
$25
US$25
US$25
$25
$25
$25
US$25
$25
US$25
$25
$25
$25
$25
$25
$25
$25

2  Preference Shares, Series A may be redeemed any time at our option. For all other series of Preference Shares, we may, at our 
option, redeem all or a portion of the outstanding Preference Shares for the Base Redemption Value per share plus all accrued 
and unpaid dividends on the Redemption Option Date and on every fifth anniversary thereafter.

3  The holder will have the right, subject to certain conditions, to convert their shares into Cumulative Redeemable Preference 

Shares of a specified series on a one-for-one basis on the Conversion Option Date and every fifth anniversary thereafter at an 
ascribed issue price equal to the Base Redemption Value.

4  With the exception of Series A Preference Shares, after the redemption and conversion option dates, holders may elect to receive 

quarterly floating rate cumulative dividends per share at a rate equal to: $25 x (number of days in quarter/365) x 90 day 
Government of Canada treasury bill rate + 2.4% (Series C), 2.4% (Series E), 2.5% (Series G), 2.1% (Series I), 2.7% (Series O), 
2.5% (Series Q), 2.5% (Series S), 2.4% (Series 4), 2.6% (Series 8), 2.7% (Series 10), 2.6% (Series 12), 2.7% (Series 14), 2.7% 
(Series 16), 4.1% (Series 18) or 3.2% (Series 20); or US$25 x (number of days in quarter/365) x three-month United States 
Government treasury bill rate + 3.1% (Series K), 3.2% (Series M), 3.1% (Series 2) or 2.8% (Series 6).

5  On June 1, 2017, 1,730,188 of Series B fixed rate Preference Shares were converted to Series C floating rate Preference Shares 
based upon preference share holder elections under the terms of the Series B Preference Shares. The quarterly dividend amount 
for the Series B Preference Shares was decreased to $0.21340 from $0.25000 on June 1, 2017, due to the reset of the annual 
dividend rate on every fifth anniversary of the date of issuance of the Series B Preference Shares. The quarterly dividend amount 
for the Series C Preference Shares was set at $0.18600 on June 1, 2017, $0.19571 on September 1, 2017 and $0.20342 on 
December 1, 2017, due to reset on a quarterly basis following the issuance thereof. 

6  On January 30, 2018, we announced that we do not intend to exercise our right to redeem our Series D Preference Shares on 

March 1, 2018. As a result, until February 14, 2018, the holders of such shares had the right to convert all or part of their Series D 
fixed rate Preference Shares on a one-for-one basis into Series E floating rate Preference Shares. As of February 14, 2018, less 
than the 1,000,000 Series D Preference Shares required to give effect to conversions into Series E Preference Shares were 
tendered for conversion. As a result, none of our outstanding Series D  Preference Shares will be converted into Series E 
Preference Shares on March 1, 2018. However, on March 1, 2018, the quarterly dividend amount for the Series D Preference 
Shares will be increased to $0.27875 from $0.25000, due to the reset of the annual dividend rate on every fifth anniversary of the 
date of issuance of the Series D Preference Shares. 

7  No Series J or Series L Preference Shares were converted on the June 1, 2017 and September 1, 2017 conversion option dates, 
respectively. However, the quarterly dividend amounts for the Series J and Series L Preference Shares were increased to US
$0.30540 from US$0.25000 on June 1, 2017, and to US$0.30993 from US$0.25000 on September 1, 2017, respectively, due to 
the reset of the annual dividend rate on every fifth anniversary of the date of issuance of the Series J and Serles L Preference 
Shares. 

84

85

8  On December 11, 2017, 20 million Series 19 Preferred Shares, inclusive of 4 million Series 19 Preferred Shares issued on full 

exercise of the underwriters' option, were issued for gross proceeds of $500 million.

9  For dividends declared, see Liquidity and Capital Resources – Sources and Uses of Cash – Dividend Reinvestment and Share 

Purchase Plan.

Common Share Issuances
On December 7, 2017, we completed the issuance of 33.5 million common shares for gross proceeds of 
approximately $1.5 billion. The proceeds were used to reduce short-term indebtedness pending 
reinvestment in secured capital projects.

On February 27, 2017, we completed the issuance of 691 million common shares with a value of $37.4 
billion in exchange for shares of Spectra Energy in connection with the Merger Transaction. For further 
information, see Merger with Spectra Energy and Item 8. Financial Statements and Supplementary Data - 
Note 7. Acquisitions and Dispositions. 

On March 1, 2016, we completed the issuance of 56.5 million common shares for gross proceeds of 
approximately $2.3 billion, inclusive of the shares issued on exercise of the full amount of the 
underwriters’ over-allotment option to purchase an additional 7.4 million common shares. The proceeds 
were used to reduce short-term indebtedness pending reinvestment in secured capital projects.

Dividend Reinvestment and Share Purchase Plan

Participants in our Dividend Reinvestment and Share Purchase Plan (DRIP) receive a 2% discount on the 

purchase of common shares with reinvested dividends. For the years ended December 31, 2017 and 

2016, total dividends paid were $3,562 million and $1,945 million, respectively, of which $2,336 million 

and $1,150 million, respectively, were paid in cash and reflected in financing activities. The remaining 

$1,226 million and $795 million, respectively, of dividends paid were reinvested pursuant to the DRIP and 

resulted in the issuance of common shares rather than a cash payment. For the years ended 

December 31, 2017 and 2016, 34.4% and 40.9%, respectively, of total dividends paid were reinvested 

through the DRIP. In addition to amounts paid in cash and reflected in financing activities for the year 

ended December 31, 2017, were $414 million in dividends declared to Spectra Energy shareholders prior 

to the Merger Transaction that were paid after the Merger Transaction.

Our Board of Directors has declared the following quarterly dividends. All dividends are payable on 

March 1, 2018 to shareholders of record on February 15, 2018.   

Common Shares

Preference Shares, Series A

Preference Shares, Series B1

Preference Shares, Series C2

Preference Shares, Series D

Preference Shares, Series F

Preference Shares, Series H

Preference Shares, Series J3

Preference Shares, Series L4

Preference Shares, Series N

Preference Shares, Series P

Preference Shares, Series R

Preference Shares, Series 1

Preference Shares, Series 3

Preference Shares, Series 5

Preference Shares, Series 7

Preference Shares, Series 9

Preference Shares, Series 11

Preference Shares, Series 13

Preference Shares, Series 15

Preference Shares, Series 17

Preference Shares, Series 19

$0.67100

$0.34375

$0.21340

$0.20342

$0.25000

$0.25000

$0.25000

US$0.30540

US$0.30993

$0.25000

$0.25000

$0.25000

US$0.25000

$0.25000

US$0.27500

$0.27500

$0.27500

$0.27500

$0.27500

$0.27500

$0.32188

$0.26850

1  The quarterly dividend amount of Series B was decreased to $0.21340 from $0.25000 on June 1, 2017, due to the reset of the 

annual dividend on every fifth anniversary of the date of issuance of the Series B Preference Shares. 

2  The quarterly dividend amount of Series C was set at $0.18600 on June 1, 2017, $0.19571 on September 1, 2017 and $0.20342 

on December 1, 2017, due to reset on a quarterly basis following the date of issuance of the Series C Preference Shares. 

3  The quarterly dividend amount of Series J was increased to US$0.30540 from US$0.25000 on June 1, 2017, due to the reset of 

the annual dividend on every fifth anniversary of the date of issuance of the Series J Preference Shares. 

4 The quarterly dividend amount of Series L was increased to US$0.30993 from US$0.25000 on September 1, 2017, due to the 

reset of the annual dividend on every fifth anniversary of the date of issuance of the Series L Preference Shares. 

86

87

 
8  On December 11, 2017, 20 million Series 19 Preferred Shares, inclusive of 4 million Series 19 Preferred Shares issued on full 

exercise of the underwriters' option, were issued for gross proceeds of $500 million.

9  For dividends declared, see Liquidity and Capital Resources – Sources and Uses of Cash – Dividend Reinvestment and Share 

Purchase Plan.

Common Share Issuances

On December 7, 2017, we completed the issuance of 33.5 million common shares for gross proceeds of 

approximately $1.5 billion. The proceeds were used to reduce short-term indebtedness pending 

reinvestment in secured capital projects.

On February 27, 2017, we completed the issuance of 691 million common shares with a value of $37.4 

billion in exchange for shares of Spectra Energy in connection with the Merger Transaction. For further 

information, see Merger with Spectra Energy and Item 8. Financial Statements and Supplementary Data - 

Note 7. Acquisitions and Dispositions. 

On March 1, 2016, we completed the issuance of 56.5 million common shares for gross proceeds of 

approximately $2.3 billion, inclusive of the shares issued on exercise of the full amount of the 

underwriters’ over-allotment option to purchase an additional 7.4 million common shares. The proceeds 

were used to reduce short-term indebtedness pending reinvestment in secured capital projects.

Dividend Reinvestment and Share Purchase Plan
Participants in our Dividend Reinvestment and Share Purchase Plan (DRIP) receive a 2% discount on the 
purchase of common shares with reinvested dividends. For the years ended December 31, 2017 and 
2016, total dividends paid were $3,562 million and $1,945 million, respectively, of which $2,336 million 
and $1,150 million, respectively, were paid in cash and reflected in financing activities. The remaining 
$1,226 million and $795 million, respectively, of dividends paid were reinvested pursuant to the DRIP and 
resulted in the issuance of common shares rather than a cash payment. For the years ended 
December 31, 2017 and 2016, 34.4% and 40.9%, respectively, of total dividends paid were reinvested 
through the DRIP. In addition to amounts paid in cash and reflected in financing activities for the year 
ended December 31, 2017, were $414 million in dividends declared to Spectra Energy shareholders prior 
to the Merger Transaction that were paid after the Merger Transaction.

Our Board of Directors has declared the following quarterly dividends. All dividends are payable on 
March 1, 2018 to shareholders of record on February 15, 2018.   

Common Shares
Preference Shares, Series A
Preference Shares, Series B1
Preference Shares, Series C2
Preference Shares, Series D
Preference Shares, Series F
Preference Shares, Series H
Preference Shares, Series J3
Preference Shares, Series L4
Preference Shares, Series N
Preference Shares, Series P
Preference Shares, Series R
Preference Shares, Series 1
Preference Shares, Series 3
Preference Shares, Series 5
Preference Shares, Series 7
Preference Shares, Series 9
Preference Shares, Series 11
Preference Shares, Series 13
Preference Shares, Series 15
Preference Shares, Series 17
Preference Shares, Series 19
1  The quarterly dividend amount of Series B was decreased to $0.21340 from $0.25000 on June 1, 2017, due to the reset of the 

$0.67100
$0.34375
$0.21340
$0.20342
$0.25000
$0.25000
$0.25000
US$0.30540
US$0.30993
$0.25000
$0.25000
$0.25000
US$0.25000
$0.25000
US$0.27500
$0.27500
$0.27500
$0.27500
$0.27500
$0.27500
$0.32188
$0.26850

annual dividend on every fifth anniversary of the date of issuance of the Series B Preference Shares. 

2  The quarterly dividend amount of Series C was set at $0.18600 on June 1, 2017, $0.19571 on September 1, 2017 and $0.20342 

on December 1, 2017, due to reset on a quarterly basis following the date of issuance of the Series C Preference Shares. 

3  The quarterly dividend amount of Series J was increased to US$0.30540 from US$0.25000 on June 1, 2017, due to the reset of 

the annual dividend on every fifth anniversary of the date of issuance of the Series J Preference Shares. 

4 The quarterly dividend amount of Series L was increased to US$0.30993 from US$0.25000 on September 1, 2017, due to the 

reset of the annual dividend on every fifth anniversary of the date of issuance of the Series L Preference Shares. 

86

87

 
SPONSORED VEHICLES
We utilize Sponsored Vehicles to diversify our access to capital and enhance our costs of funds. When 
market conditions are supportive, we may also seek to raise capital and monetize the value of existing 
assets through drop-down transactions with our Sponsored Vehicles.

SEP

The Fund Group

Economic interest as at December 31,
Distributions received by us for the year ended

December 31,

2017
82.5%

2016
86.9%

2015
89.2%

$1,539 million

$1,555 million

$601 million

Common Unit Issuance
On December 7, 2017, ENF completed the issuance of 20,683,900 common shares, inclusive of 
2,697,900 common shares issued on full exercise of the underwriters' over-allotment option, at a price of 
$27.80 for a gross proceeds of $575 million. The proceeds will be used to repay short-term indebtedness 
and fund growth projects associated with the Fund's Canadian liquids pipeline assets. 

On April 18, 2017, ENF completed the Secondary Offering of 17,347,750 common shares to the public at 
a price of $33.15 per share, for gross proceeds of approximately $575 million. For further information, 
refer to Asset Monetization.

Restructuring
In September 2015, we completed the Canadian Restructuring Plan. For further details, refer to Canadian 
Restructuring Plan.

EEP 

Economic interest as at December 31,
Distributions received by us for the year ended 

December 31,1

2017
34.6%

2016
35.3%

2015
35.7%

US$713 million US$573 million US$499 million

1  Includes distributions for our ownership interest in EEP and distributions from direct ownership in its jointly funded projects.

Strategic Review
In 2017, we continued the ongoing evaluation of our investment in EEP. For additional information, refer 
to United States Sponsored Vehicle Strategy.

Common Unit Issuance
In March 2015, EEP completed the issuance of eight million Class A common units for gross proceeds of 
approximately US$294 million before underwriting discounts and commissions and offering expenses. We 
did not participate in the issuance; however, we made a capital contribution of US$6 million to maintain 
our 2% general partner interest in EEP. EEP used the proceeds from the offering to fund a portion of its 
capital expansion projects and for general partnership purposes.

Alberta Clipper Drop Down
In January 2015, we completed the drop down of our 66.7% interest in the United States segment of the 
Alberta Clipper Pipeline to EEP. Aggregate consideration for the transaction was US$1 billion, consisting 
of approximately US$694 million of Class E equity units issued to us by EEP and the repayment of 
approximately US$306 million of indebtedness owed to us.

Economic interest as at December 31,

Distributions received by us for the year ended

December 31,

2017

83%

US$738 million

2016

—

—

2015

—

—

The Merger Transaction

As a result of the Merger Transaction, we acquired a 75% economic interest in SEP. For further 

information, refer to Merger with Spectra Energy.

Share Issuances

During the year ended December 31, 2017, SEP issued 3,991,977 million common units under its at-the-

market program for total proceeds of US$171 million.

Restructuring of Incentive Distribution Rights

Refer to United States Sponsored Vehicle Strategy - Restructuring of SEP Incentive Distribution Rights.

OFF-BALANCE SHEET ARRANGEMENTS

We enter into guarantee arrangements in the normal course of business to facilitate commercial 

transactions with third parties. These arrangements include financial guarantees, stand-by letters of 

credit, debt guarantees, surety bonds and indemnifications. See Item 8. Financial Statements and 

supplementary data - Note 29. Guarantees for further discussion of guarantee arrangements.

Most of the guarantee arrangements that we enter into enhance the credit standings of certain 

subsidiaries, non-consolidated entities or less than 100%-owned entities, enabling them to conduct 

business. As such, these guarantee arrangements involve elements of performance and credit risk which 

are not included on our Consolidated Statements of Financial Position. The possibility of us having to 

honor our contingencies is largely dependent upon the future operations of our subsidiaries, investees 

and other third parties, or the occurrence of certain future events. Issuance of these guarantee 

arrangements is not required for the majority of our operations.

We do not have material off-balance sheet financing entities or structures, except for normal operating 

lease arrangements, guarantee arrangements and financings entered into by our equity investments. For 

additional information on these commitments, see Item 8. Financial Statements and supplementary data - 

Note 28. Commitments and Contingencies and Note 29. Guarantees.

We do not have material off-balance sheet arrangements that have or are reasonably likely to have a 

current or future effect on our financial condition, changes in financial condition, revenues or expenses, 

results of operations, liquidity, capital expenditures or capital resources.

88

89

SPONSORED VEHICLES

We utilize Sponsored Vehicles to diversify our access to capital and enhance our costs of funds. When 

market conditions are supportive, we may also seek to raise capital and monetize the value of existing 

assets through drop-down transactions with our Sponsored Vehicles.

The Fund Group

Economic interest as at December 31,

Distributions received by us for the year ended

December 31,

2017

82.5%

2016

86.9%

2015

89.2%

$1,539 million

$1,555 million

$601 million

Common Unit Issuance

On December 7, 2017, ENF completed the issuance of 20,683,900 common shares, inclusive of 

2,697,900 common shares issued on full exercise of the underwriters' over-allotment option, at a price of 

$27.80 for a gross proceeds of $575 million. The proceeds will be used to repay short-term indebtedness 

and fund growth projects associated with the Fund's Canadian liquids pipeline assets. 

On April 18, 2017, ENF completed the Secondary Offering of 17,347,750 common shares to the public at 

a price of $33.15 per share, for gross proceeds of approximately $575 million. For further information, 

In September 2015, we completed the Canadian Restructuring Plan. For further details, refer to Canadian 

refer to Asset Monetization.

Restructuring

Restructuring Plan.

EEP 

Economic interest as at December 31,

Distributions received by us for the year ended 

December 31,1

2017

34.6%

2016

35.3%

2015

35.7%

US$713 million US$573 million US$499 million

1  Includes distributions for our ownership interest in EEP and distributions from direct ownership in its jointly funded projects.

In 2017, we continued the ongoing evaluation of our investment in EEP. For additional information, refer 

to United States Sponsored Vehicle Strategy.

Strategic Review

Common Unit Issuance

In March 2015, EEP completed the issuance of eight million Class A common units for gross proceeds of 

approximately US$294 million before underwriting discounts and commissions and offering expenses. We 

did not participate in the issuance; however, we made a capital contribution of US$6 million to maintain 

our 2% general partner interest in EEP. EEP used the proceeds from the offering to fund a portion of its 

capital expansion projects and for general partnership purposes.

Alberta Clipper Drop Down

In January 2015, we completed the drop down of our 66.7% interest in the United States segment of the 

Alberta Clipper Pipeline to EEP. Aggregate consideration for the transaction was US$1 billion, consisting 

of approximately US$694 million of Class E equity units issued to us by EEP and the repayment of 

approximately US$306 million of indebtedness owed to us.

SEP

Economic interest as at December 31,
Distributions received by us for the year ended

December 31,

2017
83%

US$738 million

2016
—

—

2015
—

—

The Merger Transaction
As a result of the Merger Transaction, we acquired a 75% economic interest in SEP. For further 
information, refer to Merger with Spectra Energy.

Share Issuances
During the year ended December 31, 2017, SEP issued 3,991,977 million common units under its at-the-
market program for total proceeds of US$171 million.

Restructuring of Incentive Distribution Rights
Refer to United States Sponsored Vehicle Strategy - Restructuring of SEP Incentive Distribution Rights.

OFF-BALANCE SHEET ARRANGEMENTS
We enter into guarantee arrangements in the normal course of business to facilitate commercial 
transactions with third parties. These arrangements include financial guarantees, stand-by letters of 
credit, debt guarantees, surety bonds and indemnifications. See Item 8. Financial Statements and 
supplementary data - Note 29. Guarantees for further discussion of guarantee arrangements.

Most of the guarantee arrangements that we enter into enhance the credit standings of certain 
subsidiaries, non-consolidated entities or less than 100%-owned entities, enabling them to conduct 
business. As such, these guarantee arrangements involve elements of performance and credit risk which 
are not included on our Consolidated Statements of Financial Position. The possibility of us having to 
honor our contingencies is largely dependent upon the future operations of our subsidiaries, investees 
and other third parties, or the occurrence of certain future events. Issuance of these guarantee 
arrangements is not required for the majority of our operations.

We do not have material off-balance sheet financing entities or structures, except for normal operating 
lease arrangements, guarantee arrangements and financings entered into by our equity investments. For 
additional information on these commitments, see Item 8. Financial Statements and supplementary data - 
Note 28. Commitments and Contingencies and Note 29. Guarantees.

We do not have material off-balance sheet arrangements that have or are reasonably likely to have a 
current or future effect on our financial condition, changes in financial condition, revenues or expenses, 
results of operations, liquidity, capital expenditures or capital resources.

88

89

CONTRACTUAL OBLIGATIONS 
Payments due under contractual obligations over the next five years and thereafter are as follows:

October 12, 2017 Eddystone Rail moved to dismiss the latest version of defendants’ counterclaims. The 

defendants’ chances of success on their counterclaims cannot be predicted at this time.

Less than

After
5 years

Total

1 year 1-3 years 3-5 years

As at December 31, 2017
(millions of Canadian dollars)
Annual debt maturities1,2 
Interest obligations2,3
Operating leases4
Capital leases
Pension obligations5
Long-term contracts6
Other long-term liabilities7
Total contractual obligations
1  Includes debentures, term notes, commercial paper and credit facility draws based on the facility's maturity date and excludes 
short-term borrowings, debt discount, debt issue costs and capital lease obligations. We have the ability under certain debt 
facilities to call and repay the obligations prior to scheduled maturities. Therefore, the actual timing of future cash repayments 
could be materially different than presented above.

62,927
42,083
1,151
35
162
14,718
—
121,076

12,995
4,415
198
10
—
4,000
—
21,618

11,344
3,794
184
4
—
2,448
—
17,774

2,831
2,485
106
9
162
4,182
—
9,775

35,757
31,389
663
12
—
4,088
—
71,909

2  Excludes the debt issuance of US$800 million senior notes that occurred subsequent to December 31, 2017.
3  Includes debentures and term notes bearing interest at fixed, floating and fixed-to-floating rates.
4  Includes land leases.
5  Assumes only required payments will be made into the pension plans in 2018. Contributions are made in accordance with 

independent actuarial valuations as at December 31, 2017. Contributions, including discretionary payments, may vary pending 
future benefit design and asset performance.

6  Included within long-term contracts, in the table, above are contracts that we have signed for the purchase of services, pipe and 

other materials totaling $2,609 million which are expected to be paid over the next five years. Also consists of the following 
purchase obligations: gas transportation and storage contracts (EGD), firm capacity payments and gas purchase commitments 
(Spectra Energy), transportation, service and product purchase obligations (MEP), and power commitments (EEP).

7  We are unable to estimate deferred income taxes (Item 8. Financial Statements and supplementary data - Note 24. Income 

Taxes) since cash payments for income taxes are determined primarily by taxable income for each discrete fiscal year. We are 
also unable to estimate asset retirement obligations (Item 8. Financial Statements and supplementary data - Note 18. Asset 
Retirement Obligations), environmental liabilities (Item 8. Financial Statements and supplementary data - Note 28. Commitments 
and Contingencies) and hedges payable (Item 8. Financial Statements and supplementary data - Note 23. Risk Management and 
Financial Instruments) due to the uncertainty as to the amount and, or, timing of when cash payments will be required.

LEGAL AND OTHER UPDATES

LIQUIDS PIPELINES
Renewal of Line 5 Easement
On January 4, 2017, the Tribal Council of the Bad River Band of Lake Superior Tribe of Chippewa Indians 
(the Band) issued a press release indicating that the Band had passed a resolution not to renew its 
interest in certain Line 5 easements through the Bad River Reservation. Line 5 is included within our 
mainline system. The Band’s resolution calls for decommissioning and removal of the pipeline from all 
Bad River tribal lands and watershed and could impact our ability to operate the pipeline on the 
Reservation. Since the Band passed the resolution, the parties have agreed to ongoing discussions with 
the objective of understanding and resolving the Band’s concerns on a long-term basis.  

Eddystone Rail Legal Matter
In February 2017, Eddystone Rail filed an action against several defendants in the United States District 
Court for the Eastern District of Pennsylvania. Eddystone Rail alleges that the defendants transferred 
valuable assets from Eddystone Rail’s counterparty in a maritime contract, so as to avoid outstanding 
obligations to Eddystone Rail. Eddystone Rail is seeking payment of compensatory and punitive damages 
in excess of US$140 million. Eddystone Rail’s chances of success in connection with the above noted 
action cannot be predicted and it is possible that Eddystone Rail may not recover any of the amounts 
sought. On July 19, 2017, the defendants’ motions to dismiss Eddystone Rail’s claims were denied. 
Defendants have filed Answers and Counterclaims, which together with subsequent amendments, seek 
damages from Eddystone Rail in excess of US$32 million. Eddystone filed a motion to dismiss the 
counterclaims and defendants amended their Answer and Counterclaims on September 21, 2017. On 

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91

Dakota Access Pipeline

As noted previously under United States Sponsored Vehicle Strategy - Finalization of Bakken Pipeline 

System Joint Funding Agreement, our investment in the Bakken Pipeline System is inclusive of the 

Dakota Access Pipeline. In February 2017, the Standing Rock Sioux Tribe and the Cheyenne River Sioux 

Tribe (the Tribes) filed motions with the United States District Court for the District of Columbia (the Court) 

contesting the validity of the process used by the United States Army Corps of Engineers (Army Corps) to 

permit the Dakota Access Pipeline. The plaintiffs requested the Court order the operator to shut down the 

pipeline until the appropriate regulatory process is completed. 

On June 14, 2017, the Court ruled that the Army Corps did not sufficiently weigh the degree to which the 

project's effects would be highly controversial, and the Army Corps failed to adequately consider the 

impact of an oil spill on the hunting and fishing rights of the Tribes and on environmental justice. The 

Court ordered the Army Corps to reconsider those components of its environmental analysis. On October 

11, 2017, the Court issued an order that allows the Dakota Access Pipeline to continue operating while 

the Army Corps completes the additional environmental review required by the Court's June 14, 2017 

order and the Court ordered the Dakota Access Pipeline to implement certain interim measures pending 

the Army Corps' supplemental analysis. 

Lakehead System Lines 6A and Line 6B Crude Oil Release

On July 26, 2010, a release of crude oil on Line 6B of EEP’s Lakehead System was reported near 

Marshall, Michigan. Further, on September 9, 2010, a release of crude oil from Line 6A of EEP’s 

Lakehead System was reported in an industrial area of Romeoville, Illinois.

As at December 31, 2017, EEP’s cumulative cost estimate for the Line 6B crude oil release remains at 

US$1.2 billion ($195 million after-tax attributable to us) including those costs that were considered 

probable and that could be reasonably estimated at December 31, 2017. As at December 31, 2017, 

EEP's remaining estimated liability is approximately US$62 million.

Insurance Recoveries

EEP is included in the comprehensive insurance program that is maintained by us for our subsidiaries 

and affiliates. As at December 31, 2017, EEP has recorded total insurance recoveries of US$547 million 

($80 million after-tax attributable to us) for the Line 6B crude oil release out of the US$650 million 

applicable limit. Of the remaining US$103 million coverage limit, US$85 million was the subject matter of 

a lawsuit against one particular insurer. In March 2015, we reached an agreement with that insurer to 

submit the US$85 million claim to binding arbitration. On May 2, 2017, the arbitration panel issued a 

decision that was not favorable to us. As a result, EEP will not receive any additional insurance recoveries 

in connection with the Line 6B crude oil release.

Legal and Regulatory Proceedings

A number of United States governmental agencies and regulators initiated investigations into the Line 6B 

crude oil release. As at December 31, 2017, there are no claims pending against us, EEP or their affiliates 

in United States state courts in connection with the Line 6B crude oil release.

We have accrued a provision for future legal costs and probable losses associated with the Line 6B crude 

oil release as described above.

Line 6B Fines and Penalties

discussed below.

As at December 31, 2017, EEP’s total estimated costs related to the Line 6B crude oil release include US

$69 million in previously paid fines and penalties, which includes fines and penalties paid to the DOJ as 

 
 
 
 
 
CONTRACTUAL OBLIGATIONS 

Payments due under contractual obligations over the next five years and thereafter are as follows:

October 12, 2017 Eddystone Rail moved to dismiss the latest version of defendants’ counterclaims. The 
defendants’ chances of success on their counterclaims cannot be predicted at this time.

As at December 31, 2017

(millions of Canadian dollars)

Annual debt maturities1,2 

Interest obligations2,3

Operating leases4

Capital leases

Pension obligations5

Long-term contracts6

Other long-term liabilities7

Total contractual obligations

Less than

Total

1 year 1-3 years 3-5 years

62,927

42,083

1,151

35

162

14,718

—

121,076

2,831

2,485

106

9

162

4,182

—

9,775

12,995

4,415

198

10

—

4,000

—

21,618

11,344

3,794

184

4

—

—

2,448

17,774

After

5 years

35,757

31,389

663

12

—

4,088

—

71,909

1  Includes debentures, term notes, commercial paper and credit facility draws based on the facility's maturity date and excludes 

short-term borrowings, debt discount, debt issue costs and capital lease obligations. We have the ability under certain debt 

facilities to call and repay the obligations prior to scheduled maturities. Therefore, the actual timing of future cash repayments 

could be materially different than presented above.

2  Excludes the debt issuance of US$800 million senior notes that occurred subsequent to December 31, 2017.

3  Includes debentures and term notes bearing interest at fixed, floating and fixed-to-floating rates.

4  Includes land leases.

5  Assumes only required payments will be made into the pension plans in 2018. Contributions are made in accordance with 

independent actuarial valuations as at December 31, 2017. Contributions, including discretionary payments, may vary pending 

future benefit design and asset performance.

6  Included within long-term contracts, in the table, above are contracts that we have signed for the purchase of services, pipe and 

other materials totaling $2,609 million which are expected to be paid over the next five years. Also consists of the following 

purchase obligations: gas transportation and storage contracts (EGD), firm capacity payments and gas purchase commitments 

(Spectra Energy), transportation, service and product purchase obligations (MEP), and power commitments (EEP).

7  We are unable to estimate deferred income taxes (Item 8. Financial Statements and supplementary data - Note 24. Income 

Taxes) since cash payments for income taxes are determined primarily by taxable income for each discrete fiscal year. We are 

also unable to estimate asset retirement obligations (Item 8. Financial Statements and supplementary data - Note 18. Asset 

Retirement Obligations), environmental liabilities (Item 8. Financial Statements and supplementary data - Note 28. Commitments 

and Contingencies) and hedges payable (Item 8. Financial Statements and supplementary data - Note 23. Risk Management and 

Financial Instruments) due to the uncertainty as to the amount and, or, timing of when cash payments will be required.

LEGAL AND OTHER UPDATES

LIQUIDS PIPELINES

Renewal of Line 5 Easement

On January 4, 2017, the Tribal Council of the Bad River Band of Lake Superior Tribe of Chippewa Indians 

(the Band) issued a press release indicating that the Band had passed a resolution not to renew its 

interest in certain Line 5 easements through the Bad River Reservation. Line 5 is included within our 

mainline system. The Band’s resolution calls for decommissioning and removal of the pipeline from all 

Bad River tribal lands and watershed and could impact our ability to operate the pipeline on the 

Reservation. Since the Band passed the resolution, the parties have agreed to ongoing discussions with 

the objective of understanding and resolving the Band’s concerns on a long-term basis.  

Eddystone Rail Legal Matter

In February 2017, Eddystone Rail filed an action against several defendants in the United States District 

Court for the Eastern District of Pennsylvania. Eddystone Rail alleges that the defendants transferred 

valuable assets from Eddystone Rail’s counterparty in a maritime contract, so as to avoid outstanding 

obligations to Eddystone Rail. Eddystone Rail is seeking payment of compensatory and punitive damages 

in excess of US$140 million. Eddystone Rail’s chances of success in connection with the above noted 

action cannot be predicted and it is possible that Eddystone Rail may not recover any of the amounts 

sought. On July 19, 2017, the defendants’ motions to dismiss Eddystone Rail’s claims were denied. 

Defendants have filed Answers and Counterclaims, which together with subsequent amendments, seek 

damages from Eddystone Rail in excess of US$32 million. Eddystone filed a motion to dismiss the 

counterclaims and defendants amended their Answer and Counterclaims on September 21, 2017. On 

Dakota Access Pipeline
As noted previously under United States Sponsored Vehicle Strategy - Finalization of Bakken Pipeline 
System Joint Funding Agreement, our investment in the Bakken Pipeline System is inclusive of the 
Dakota Access Pipeline. In February 2017, the Standing Rock Sioux Tribe and the Cheyenne River Sioux 
Tribe (the Tribes) filed motions with the United States District Court for the District of Columbia (the Court) 
contesting the validity of the process used by the United States Army Corps of Engineers (Army Corps) to 
permit the Dakota Access Pipeline. The plaintiffs requested the Court order the operator to shut down the 
pipeline until the appropriate regulatory process is completed. 

On June 14, 2017, the Court ruled that the Army Corps did not sufficiently weigh the degree to which the 
project's effects would be highly controversial, and the Army Corps failed to adequately consider the 
impact of an oil spill on the hunting and fishing rights of the Tribes and on environmental justice. The 
Court ordered the Army Corps to reconsider those components of its environmental analysis. On October 
11, 2017, the Court issued an order that allows the Dakota Access Pipeline to continue operating while 
the Army Corps completes the additional environmental review required by the Court's June 14, 2017 
order and the Court ordered the Dakota Access Pipeline to implement certain interim measures pending 
the Army Corps' supplemental analysis. 

Lakehead System Lines 6A and Line 6B Crude Oil Release
On July 26, 2010, a release of crude oil on Line 6B of EEP’s Lakehead System was reported near 
Marshall, Michigan. Further, on September 9, 2010, a release of crude oil from Line 6A of EEP’s 
Lakehead System was reported in an industrial area of Romeoville, Illinois.

As at December 31, 2017, EEP’s cumulative cost estimate for the Line 6B crude oil release remains at 
US$1.2 billion ($195 million after-tax attributable to us) including those costs that were considered 
probable and that could be reasonably estimated at December 31, 2017. As at December 31, 2017, 
EEP's remaining estimated liability is approximately US$62 million.

Insurance Recoveries
EEP is included in the comprehensive insurance program that is maintained by us for our subsidiaries 
and affiliates. As at December 31, 2017, EEP has recorded total insurance recoveries of US$547 million 
($80 million after-tax attributable to us) for the Line 6B crude oil release out of the US$650 million 
applicable limit. Of the remaining US$103 million coverage limit, US$85 million was the subject matter of 
a lawsuit against one particular insurer. In March 2015, we reached an agreement with that insurer to 
submit the US$85 million claim to binding arbitration. On May 2, 2017, the arbitration panel issued a 
decision that was not favorable to us. As a result, EEP will not receive any additional insurance recoveries 
in connection with the Line 6B crude oil release.

Legal and Regulatory Proceedings
A number of United States governmental agencies and regulators initiated investigations into the Line 6B 
crude oil release. As at December 31, 2017, there are no claims pending against us, EEP or their affiliates 
in United States state courts in connection with the Line 6B crude oil release.

We have accrued a provision for future legal costs and probable losses associated with the Line 6B crude 
oil release as described above.

Line 6B Fines and Penalties
As at December 31, 2017, EEP’s total estimated costs related to the Line 6B crude oil release include US
$69 million in previously paid fines and penalties, which includes fines and penalties paid to the DOJ as 
discussed below.

90

91

 
 
 
 
 
Consent Decree
On May 23, 2017, the United States District Court for the Western District of Michigan, Southern Division, 
approved EEP’s signed settlement agreement with the United States Environmental Protection Agency 
and the DOJ regarding the Lines 6A and 6B crude oil releases (the Consent Decree). On June 15, 2017, 
we made a total payment of US$68 million as required by the Consent Decree, which reflects US$61 
million for the civil penalty for the Line 6B release, US$1 million for the Line 6A release, and US$6 million 
for past removal costs and interest.

Seaway Pipeline Regulatory Matters
Seaway Crude Pipeline System (Seaway Pipeline) filed an application for market-based rates in 
December 2011 and refiled in December 2014. Several parties filed comments in opposition alleging that 
the application should be denied because Seaway Pipeline has market power in both its receipt and 
destination markets. On December 1, 2016, the Administrative Law Judge issued its decision which 
concluded that the Commission should grant the application of Seaway Pipeline for authority to charge 
market-based rates. The parties filed briefs during the first quarter of 2017 to defend the Administrative 
Law Judge's decision and to respond to criticisms of that decision. The Commissioners will now review 
the entire record and issue a decision. There is no timeline for the FERC to act and issue a decision.

GAS TRANSMISSION AND MIDSTREAM
Aux Sable Environmental Protection Agency Matter
On October 14, 2016, an amended claim was filed against Aux Sable by a counterparty to a NGL supply 
agreement. On January 5, 2017, Aux Sable filed a Statement of Defence with respect to this claim. While 
the final outcome of this action cannot be predicted with certainty, at this time management believes that 
the ultimate resolution of this action will not have a material impact on our consolidated financial position 
or results of operations.

Sabal Trail FERC Certificate Review
Sierra Club and two other non-governmental organizations filed a Petition for Review of Sabal Trail’s 
FERC certificate on September 20, 2016 in the D.C. Circuit Court of Appeals. On August 22, 2017, the 
D.C. Circuit issued an opinion denying one of the petitions, and granting the other petition in part, 
vacating the certificates, and remanding the case to FERC to supplement the environmental impact 
statement for the project to estimate the quantity of green-house gases to be released into the 
environment by the gas-fired generation plants in Florida that will consume the gas transported by Sabal 
Trail. The court withheld issuance of the mandate requiring vacatur of the certificate until seven days after 
the disposition of any timely petition for rehearing. On October 6, 2017, Sabal Trail and FERC each filed 
timely petitions for rehearing. On January 31, 2018, the court denied FERC’s and Sabal Trail’s petitions 
for rehearing. Absent a stay, the court’s mandate could have issued on February 7, 2018. However, on 
February 2, 2018, Sabal Trail filed with FERC a request for expedited issuance of its order on remand or, 
alternatively, temporary emergency certificates to permit continued operation of the pipeline absent a stay 
of the court’s mandate. On February 5, 2018, FERC issued its final supplemental environmental impact 
statement in compliance with the D.C. Circuit decision. In addition, on February 6, 2018, FERC filed a 
motion with the court requesting a 45-day stay of the mandate, and stated in its motion that it intends to 
issue the order on remand within 45 days. Sabal Trail filed a motion with the court requesting a 90-day 
stay of the mandate. The February 6, 2018 motions automatically stay the issuance of the court’s 
mandate until the later of seven days after the court denies the motions or the expiration of any stay 
granted by the court. Both motions are pending.

TAX MATTERS
We and our subsidiaries maintain tax liabilities related to uncertain tax positions. While fully supportable in 
our view, these tax positions, if challenged by tax authorities, may not be fully sustained on review.

OTHER LITIGATION
We and our subsidiaries are subject to various other legal and regulatory actions and proceedings which 
arise in the normal course of business, including interventions in regulatory proceedings and challenges 

to regulatory approvals and permits by special interest groups. While the final outcome of such actions 

and proceedings cannot be predicted with certainty, management believes that the resolution of such 

actions and proceedings will not have a material impact on our consolidated financial position or results of 

operations.

CRITICAL ACCOUNTING ESTIMATES

Our consolidated financial statements are prepared in accordance with accounting principles generally 

accepted in the United States, which require management to make estimates, judgments and 

assumptions that affect the amounts reported in our consolidated financial statements and accompanying 

notes. In making judgments and estimates, management relies on external information and observable 

conditions, where possible, supplemented by internal analysis as required. We believe our most critical 

accounting policies and estimates discussed below have an impact across the various segments of our 

business.

Business Combinations

We apply the provisions of Accounting Standards Codification 805 Business Combinations in accounting 

for our acquisitions. The acquired long-lived assets and intangible assets and assumed liabilities are 

recorded at their estimated fair values at the date of acquisition. Goodwill represents the excess of the 

purchase price over the fair value of net assets. While we use our best estimates and assumptions to 

accurately value assets acquired and liabilities assumed at the date of acquisition, as well as any 

contingent consideration, our estimates are inherently uncertain and subject to refinement. During the 

measurement period, which may be up to one year from the acquisition date, we record adjustments to 

the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion 

of the measurement period or final determination of values of assets acquired or liabilities assumed, 

whichever comes first, any subsequent adjustments are recorded to our consolidated statements of 

operations. 

Accounting for business combinations requires significant judgment, estimates and assumptions at the 

acquisition date. In developing estimates of fair values at the acquisition date, we utilize a variety of 

factors including market data, historical and future expected cash flows, growth rates and discount rates. 

The subjective nature of our assumptions increases the risk associated with estimates surrounding the 

projected performance of the acquired entity.

On February 27, 2017, we acquired Spectra Energy for a purchase price of $37.5 billion. In determining 

the valuation of tangible assets acquired, we applied the cost, market and income approaches. For 

intangible assets acquired, we used an income approach which included cash flow projections based on 

historical performance, terms found in contracts and assumptions on expected renewals. Discount rates 

used in the valuation were also developed using a weighted-average cost of capital based on risks 

specific to respective assets and returns that an investor would likely require given the expected cash 

flows, timing and risk.

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Consent Decree

On May 23, 2017, the United States District Court for the Western District of Michigan, Southern Division, 

approved EEP’s signed settlement agreement with the United States Environmental Protection Agency 

and the DOJ regarding the Lines 6A and 6B crude oil releases (the Consent Decree). On June 15, 2017, 

we made a total payment of US$68 million as required by the Consent Decree, which reflects US$61 

million for the civil penalty for the Line 6B release, US$1 million for the Line 6A release, and US$6 million 

for past removal costs and interest.

Seaway Pipeline Regulatory Matters

Seaway Crude Pipeline System (Seaway Pipeline) filed an application for market-based rates in 

December 2011 and refiled in December 2014. Several parties filed comments in opposition alleging that 

the application should be denied because Seaway Pipeline has market power in both its receipt and 

destination markets. On December 1, 2016, the Administrative Law Judge issued its decision which 

concluded that the Commission should grant the application of Seaway Pipeline for authority to charge 

market-based rates. The parties filed briefs during the first quarter of 2017 to defend the Administrative 

Law Judge's decision and to respond to criticisms of that decision. The Commissioners will now review 

the entire record and issue a decision. There is no timeline for the FERC to act and issue a decision.

GAS TRANSMISSION AND MIDSTREAM

Aux Sable Environmental Protection Agency Matter

On October 14, 2016, an amended claim was filed against Aux Sable by a counterparty to a NGL supply 

agreement. On January 5, 2017, Aux Sable filed a Statement of Defence with respect to this claim. While 

the final outcome of this action cannot be predicted with certainty, at this time management believes that 

the ultimate resolution of this action will not have a material impact on our consolidated financial position 

or results of operations.

Sabal Trail FERC Certificate Review

Sierra Club and two other non-governmental organizations filed a Petition for Review of Sabal Trail’s 

FERC certificate on September 20, 2016 in the D.C. Circuit Court of Appeals. On August 22, 2017, the 

D.C. Circuit issued an opinion denying one of the petitions, and granting the other petition in part, 

vacating the certificates, and remanding the case to FERC to supplement the environmental impact 

statement for the project to estimate the quantity of green-house gases to be released into the 

environment by the gas-fired generation plants in Florida that will consume the gas transported by Sabal 

Trail. The court withheld issuance of the mandate requiring vacatur of the certificate until seven days after 

the disposition of any timely petition for rehearing. On October 6, 2017, Sabal Trail and FERC each filed 

timely petitions for rehearing. On January 31, 2018, the court denied FERC’s and Sabal Trail’s petitions 

for rehearing. Absent a stay, the court’s mandate could have issued on February 7, 2018. However, on 

February 2, 2018, Sabal Trail filed with FERC a request for expedited issuance of its order on remand or, 

alternatively, temporary emergency certificates to permit continued operation of the pipeline absent a stay 

of the court’s mandate. On February 5, 2018, FERC issued its final supplemental environmental impact 

statement in compliance with the D.C. Circuit decision. In addition, on February 6, 2018, FERC filed a 

motion with the court requesting a 45-day stay of the mandate, and stated in its motion that it intends to 

issue the order on remand within 45 days. Sabal Trail filed a motion with the court requesting a 90-day 

stay of the mandate. The February 6, 2018 motions automatically stay the issuance of the court’s 

mandate until the later of seven days after the court denies the motions or the expiration of any stay 

granted by the court. Both motions are pending.

We and our subsidiaries maintain tax liabilities related to uncertain tax positions. While fully supportable in 

our view, these tax positions, if challenged by tax authorities, may not be fully sustained on review.

TAX MATTERS

OTHER LITIGATION

We and our subsidiaries are subject to various other legal and regulatory actions and proceedings which 

arise in the normal course of business, including interventions in regulatory proceedings and challenges 

to regulatory approvals and permits by special interest groups. While the final outcome of such actions 
and proceedings cannot be predicted with certainty, management believes that the resolution of such 
actions and proceedings will not have a material impact on our consolidated financial position or results of 
operations.

CRITICAL ACCOUNTING ESTIMATES

Our consolidated financial statements are prepared in accordance with accounting principles generally 
accepted in the United States, which require management to make estimates, judgments and 
assumptions that affect the amounts reported in our consolidated financial statements and accompanying 
notes. In making judgments and estimates, management relies on external information and observable 
conditions, where possible, supplemented by internal analysis as required. We believe our most critical 
accounting policies and estimates discussed below have an impact across the various segments of our 
business.

Business Combinations
We apply the provisions of Accounting Standards Codification 805 Business Combinations in accounting 
for our acquisitions. The acquired long-lived assets and intangible assets and assumed liabilities are 
recorded at their estimated fair values at the date of acquisition. Goodwill represents the excess of the 
purchase price over the fair value of net assets. While we use our best estimates and assumptions to 
accurately value assets acquired and liabilities assumed at the date of acquisition, as well as any 
contingent consideration, our estimates are inherently uncertain and subject to refinement. During the 
measurement period, which may be up to one year from the acquisition date, we record adjustments to 
the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion 
of the measurement period or final determination of values of assets acquired or liabilities assumed, 
whichever comes first, any subsequent adjustments are recorded to our consolidated statements of 
operations. 

Accounting for business combinations requires significant judgment, estimates and assumptions at the 
acquisition date. In developing estimates of fair values at the acquisition date, we utilize a variety of 
factors including market data, historical and future expected cash flows, growth rates and discount rates. 
The subjective nature of our assumptions increases the risk associated with estimates surrounding the 
projected performance of the acquired entity.

On February 27, 2017, we acquired Spectra Energy for a purchase price of $37.5 billion. In determining 
the valuation of tangible assets acquired, we applied the cost, market and income approaches. For 
intangible assets acquired, we used an income approach which included cash flow projections based on 
historical performance, terms found in contracts and assumptions on expected renewals. Discount rates 
used in the valuation were also developed using a weighted-average cost of capital based on risks 
specific to respective assets and returns that an investor would likely require given the expected cash 
flows, timing and risk.

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Goodwill Impairment
We assess our goodwill for impairment at least annually unless events or changes in circumstances 
indicate that it is more likely than not that the fair value of a reporting unit is below its carrying value. For 
the purposes of impairment testing, reporting units are identified as business operations within an 
operating segment. We have the option to first assess qualitative factors to determine whether it is 
necessary to perform the quantitative goodwill impairment test. If the quantitative goodwill impairment test 
is performed, we determine the fair value of our reporting units inclusive of goodwill and compare those 
values to the carrying value of each reporting unit. If the carrying value of a reporting unit, including 
allocated goodwill, exceeds its fair value, goodwill impairment is measured at the amount by which the 
reporting unit’s carrying value exceeds its fair value. 

We also apply significant judgement when identifying the composition of disposal groups and determining 
which disposal groups meet the definition of a business. If the composition of disposal groups were to 
change as a result of a change in our marketing plans or a new agreement with a buyer, this could create 
a difference in the amount of goodwill allocated to assets held for sale. During 2017, we impaired $102 
million of goodwill allocated to assets held for sale. 

For the year ended December 31, 2017, we elected to perform a qualitative assessment to test the 
goodwill acquired from the acquisition of Spectra Energy for impairment. We assessed macroeconomic 
conditions, industry and market considerations, cost factors and overall financial performance to 
determine whether it is more likely than not that the fair value of each of our reporting units is less than its 
carrying amount. Other than as discussed above, our goodwill impairment analysis performed as at 
December 31, 2017, did not result in an impairment charge.

Effective in the quarter ended December 31, 2017, we have elected to move the annual review of the 
goodwill balance from October 1 to April 1 to better align with the preparation and review of our business 
plan, which is used in the test. The change does not delay, accelerate or avoid an impairment charge.

Asset Impairment
We evaluate the recoverability of our property, plant and equipment when events or circumstances such 
as economic obsolescence, business climate, legal or regulatory changes, or other factors indicate we 
may not recover the carrying amount of our assets. We continually monitor our businesses, the market 
and business environments to identify indicators that could suggest an asset may not be recoverable. If it 
is determined that the carrying value of an asset exceeds the undiscounted cash flows expected from the 
asset, we will assess the fair value of the asset. An impairment loss is recognized when the carrying 
amount of the asset exceeds its fair value as determined by quoted market prices in active markets or 
present value techniques. The determination of the fair value using present value techniques requires the 
use of projections and assumptions regarding future cash flows and weighted average cost of capital. Any 
changes to these projections and assumptions could result in revisions to the evaluation of the 
recoverability of the property, plant and equipment and the recognition of an impairment loss in the 
Consolidated Statements of Earnings. 

Assets held for sale
We classify assets as held for sale when management commits to a formal plan to actively market an 
asset or a group of assets and when management believes it is probable the sale of the assets will occur 
within one year. We measure assets classified as held for sale at the lower of their carrying value and 
their estimated fair value less costs to sell. 

We are in the process of selling certain midstream assets within our gas transmission and midstream 
segment. Given the state of the divestiture plan for these assets, as at December 31, 2017, we classified 
them as held for sale and measured them at the lower of their carrying value and fair value less costs to 
sell, which resulted in a loss of $4.4 billion ($2.8 billion after-tax). We determined the fair value of these 
assets held for sale using present value techniques which required us to make projections and 
assumptions regarding future cash flows, discount rates, inflation rates and growth rates, which were 
impacted by prolonged decline in commodity prices and deteriorating business performance. These 

projections and assumptions are subject to uncertainty and could be negatively impacted by changes in 

market conditions, asset performance, legal environment, and other factors.

Regulatory Accounting

Certain of our businesses are subject to regulation by various authorities, including but not limited to, the 

NEB, the FERC, the Alberta Energy Regulator, the New Brunswick Energy and Utilities Board, La Régie 

de l’Energie du Québec and the Ontario Energy Board (OEB). Regulatory bodies exercise statutory 

authority over matters such as construction, rates and ratemaking and agreements with customers. To 

recognize the economic effects of the actions of the regulator, the timing of recognition of certain 

revenues and expenses in these operations may differ from that otherwise expected under U.S. GAAP for 

non-rate-regulated entities. Key determinants in the ratemaking process are:

•  Costs of providing service, including depreciation expense;

•  Allowed rate of return, including the equity component of the capital structure and related income 

taxes; and

•  Contract and volume throughput assumptions.

The allowed rate of return is determined in accordance with the applicable regulatory model and may 

impact our profitability. The rates for a number of our projects are based on a cost-of-service recovery 

model that follows the regulators’ authoritative guidance. Under the cost-of-service tolling methodology, 

we calculate tolls based on forecast volumes and cost. A difference between forecast and actual results 

causes an over or under recovery in any given year. Regulatory assets represent amounts that are 

expected to be recovered from customers in future periods through rates. Regulatory liabilities represent 

amounts that are expected to be refunded to customers in future periods through rates or expected to be 

paid to cover future abandonment costs in relation to the NEB’s Land Matters Consultation Initiative 

(LMCI). 

To the extent that the regulator’s actions differ from our expectations, the timing and amount of recovery 

or settlement of regulatory balances could differ significantly from those recorded. In the absence of rate 

regulation, we would generally not recognize regulatory assets or liabilities and the earnings impact would 

be recorded in the period the expenses are incurred or revenues are earned. A regulatory asset or liability 

is recognized in respect of deferred income taxes when it is expected the amounts will be recovered or 

settled through future regulator-approved rates. 

As at December 31, 2017 and 2016, our regulatory assets totaled $3,477 million and $1,865 million, 

respectively, and significant regulatory liabilities totaled $2,366 million and $844 million, respectively.

Depreciation

Depreciation of property, plant and equipment, our largest asset with a net book value at December 31, 

2017 and 2016, of $90,711 million and $64,284 million, respectively, is charged in accordance with two 

primary methods. For distinct assets, depreciation is generally provided on a straight-line basis over the 

estimated useful lives of the assets commencing when the asset is placed in service. For largely 

homogeneous groups of assets with comparable useful lives, the pool method of accounting is followed 

whereby similar assets are grouped and depreciated as a pool. When group assets are retired or 

otherwise disposed of, gains and losses are not reflected in earnings but are booked as an adjustment to 

accumulated depreciation.

When it is determined that the estimated service life of an asset no longer reflects the expected remaining 

period of benefit, prospective changes are made to the estimated service life. Estimates of useful lives 

are based on third party engineering studies, experience and/or industry practice. There are a number of 

assumptions inherent in estimating the service lives of our assets including the level of development, 

exploration, drilling, reserves and production of crude oil and natural gas in the supply areas served by 

our pipelines as well as the demand for crude oil and natural gas and the integrity of our systems. 

Changes in these assumptions could result in adjustments to the estimated service lives, which could 

result in material changes to depreciation expense in future periods in any of our business segments. For 

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95

Goodwill Impairment

We assess our goodwill for impairment at least annually unless events or changes in circumstances 

indicate that it is more likely than not that the fair value of a reporting unit is below its carrying value. For 

the purposes of impairment testing, reporting units are identified as business operations within an 

operating segment. We have the option to first assess qualitative factors to determine whether it is 

necessary to perform the quantitative goodwill impairment test. If the quantitative goodwill impairment test 

is performed, we determine the fair value of our reporting units inclusive of goodwill and compare those 

values to the carrying value of each reporting unit. If the carrying value of a reporting unit, including 

allocated goodwill, exceeds its fair value, goodwill impairment is measured at the amount by which the 

reporting unit’s carrying value exceeds its fair value. 

We also apply significant judgement when identifying the composition of disposal groups and determining 

which disposal groups meet the definition of a business. If the composition of disposal groups were to 

change as a result of a change in our marketing plans or a new agreement with a buyer, this could create 

a difference in the amount of goodwill allocated to assets held for sale. During 2017, we impaired $102 

million of goodwill allocated to assets held for sale. 

For the year ended December 31, 2017, we elected to perform a qualitative assessment to test the 

goodwill acquired from the acquisition of Spectra Energy for impairment. We assessed macroeconomic 

conditions, industry and market considerations, cost factors and overall financial performance to 

determine whether it is more likely than not that the fair value of each of our reporting units is less than its 

carrying amount. Other than as discussed above, our goodwill impairment analysis performed as at 

December 31, 2017, did not result in an impairment charge.

Effective in the quarter ended December 31, 2017, we have elected to move the annual review of the 

goodwill balance from October 1 to April 1 to better align with the preparation and review of our business 

plan, which is used in the test. The change does not delay, accelerate or avoid an impairment charge.

Asset Impairment

We evaluate the recoverability of our property, plant and equipment when events or circumstances such 

as economic obsolescence, business climate, legal or regulatory changes, or other factors indicate we 

may not recover the carrying amount of our assets. We continually monitor our businesses, the market 

and business environments to identify indicators that could suggest an asset may not be recoverable. If it 

is determined that the carrying value of an asset exceeds the undiscounted cash flows expected from the 

asset, we will assess the fair value of the asset. An impairment loss is recognized when the carrying 

amount of the asset exceeds its fair value as determined by quoted market prices in active markets or 

present value techniques. The determination of the fair value using present value techniques requires the 

use of projections and assumptions regarding future cash flows and weighted average cost of capital. Any 

changes to these projections and assumptions could result in revisions to the evaluation of the 

recoverability of the property, plant and equipment and the recognition of an impairment loss in the 

Consolidated Statements of Earnings. 

Assets held for sale

We classify assets as held for sale when management commits to a formal plan to actively market an 

asset or a group of assets and when management believes it is probable the sale of the assets will occur 

within one year. We measure assets classified as held for sale at the lower of their carrying value and 

their estimated fair value less costs to sell. 

We are in the process of selling certain midstream assets within our gas transmission and midstream 

segment. Given the state of the divestiture plan for these assets, as at December 31, 2017, we classified 

them as held for sale and measured them at the lower of their carrying value and fair value less costs to 

sell, which resulted in a loss of $4.4 billion ($2.8 billion after-tax). We determined the fair value of these 

assets held for sale using present value techniques which required us to make projections and 

assumptions regarding future cash flows, discount rates, inflation rates and growth rates, which were 

impacted by prolonged decline in commodity prices and deteriorating business performance. These 

projections and assumptions are subject to uncertainty and could be negatively impacted by changes in 
market conditions, asset performance, legal environment, and other factors.

Regulatory Accounting
Certain of our businesses are subject to regulation by various authorities, including but not limited to, the 
NEB, the FERC, the Alberta Energy Regulator, the New Brunswick Energy and Utilities Board, La Régie 
de l’Energie du Québec and the Ontario Energy Board (OEB). Regulatory bodies exercise statutory 
authority over matters such as construction, rates and ratemaking and agreements with customers. To 
recognize the economic effects of the actions of the regulator, the timing of recognition of certain 
revenues and expenses in these operations may differ from that otherwise expected under U.S. GAAP for 
non-rate-regulated entities. Key determinants in the ratemaking process are:

•  Costs of providing service, including depreciation expense;
•  Allowed rate of return, including the equity component of the capital structure and related income 

taxes; and

•  Contract and volume throughput assumptions.

The allowed rate of return is determined in accordance with the applicable regulatory model and may 
impact our profitability. The rates for a number of our projects are based on a cost-of-service recovery 
model that follows the regulators’ authoritative guidance. Under the cost-of-service tolling methodology, 
we calculate tolls based on forecast volumes and cost. A difference between forecast and actual results 
causes an over or under recovery in any given year. Regulatory assets represent amounts that are 
expected to be recovered from customers in future periods through rates. Regulatory liabilities represent 
amounts that are expected to be refunded to customers in future periods through rates or expected to be 
paid to cover future abandonment costs in relation to the NEB’s Land Matters Consultation Initiative 
(LMCI). 

To the extent that the regulator’s actions differ from our expectations, the timing and amount of recovery 
or settlement of regulatory balances could differ significantly from those recorded. In the absence of rate 
regulation, we would generally not recognize regulatory assets or liabilities and the earnings impact would 
be recorded in the period the expenses are incurred or revenues are earned. A regulatory asset or liability 
is recognized in respect of deferred income taxes when it is expected the amounts will be recovered or 
settled through future regulator-approved rates. 

As at December 31, 2017 and 2016, our regulatory assets totaled $3,477 million and $1,865 million, 
respectively, and significant regulatory liabilities totaled $2,366 million and $844 million, respectively.

Depreciation
Depreciation of property, plant and equipment, our largest asset with a net book value at December 31, 
2017 and 2016, of $90,711 million and $64,284 million, respectively, is charged in accordance with two 
primary methods. For distinct assets, depreciation is generally provided on a straight-line basis over the 
estimated useful lives of the assets commencing when the asset is placed in service. For largely 
homogeneous groups of assets with comparable useful lives, the pool method of accounting is followed 
whereby similar assets are grouped and depreciated as a pool. When group assets are retired or 
otherwise disposed of, gains and losses are not reflected in earnings but are booked as an adjustment to 
accumulated depreciation.

When it is determined that the estimated service life of an asset no longer reflects the expected remaining 
period of benefit, prospective changes are made to the estimated service life. Estimates of useful lives 
are based on third party engineering studies, experience and/or industry practice. There are a number of 
assumptions inherent in estimating the service lives of our assets including the level of development, 
exploration, drilling, reserves and production of crude oil and natural gas in the supply areas served by 
our pipelines as well as the demand for crude oil and natural gas and the integrity of our systems. 
Changes in these assumptions could result in adjustments to the estimated service lives, which could 
result in material changes to depreciation expense in future periods in any of our business segments. For 

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certain rate-regulated operations, depreciation rates are approved by the regulator and the regulator may 
require periodic studies or technical updates on useful lives which may change depreciation rates. 

Postretirement Benefits
We maintain pension plans, which provide defined benefit and/or defined contribution pension benefits 
and other postretirement benefits (OPEB) to eligible retirees. Pension costs and obligations for the 
defined benefit pension plans are determined using actuarial methods and are funded through 
contributions determined using the projected benefit method, which incorporates management’s best 
estimates of future salary level, other cost escalations, retirement ages of employees and other actuarial 
factors including discount rates and mortality. We determine discount rates by reference to rates of high-
quality long-term corporate bonds with maturities that approximate the timing of future payments we 
anticipate making under each of the respective plans. These assumptions are reviewed annually by our 
actuaries. Actual results that differ from assumptions are amortized over future periods and therefore 
could materially affect the expense recognized and the recorded obligation in future periods. The actual 
return on plan assets exceeded the expectation by $174 million and $19 million for the years ended 
December 31, 2017 and 2016, respectively, as disclosed in Part II. Item 8. Financial Statements and 
Supplementary Data - Note 25 Pension and Other Postretirement Benefits. The difference between the 
actual and expected return on plan assets is amortized over the remaining service period of the active 
employees. 

The following sensitivity analysis identifies the impact on the December 31, 2017 Consolidated Financial 
Statements of a 0.5% change in key pension and OPEB assumptions.

Goodwill 

(millions of Canadian dollars)
Pension
Decrease in discount rate
Decrease in expected return on assets
Decrease in rate of salary increase
OPEB
Decrease in discount rate
Decrease in expected return on assets

Canada

United States

Obligation

Expense

Obligation

Expense

255
—
(56)

27
—

26
12
(13)

1
—

71
—
(9)

18
—

3
5
(2)

(1)
1

Contingent Liabilities
Provisions for claims filed against us are determined on a case-by-case basis. Case estimates are 
reviewed on a regular basis and are updated as new information is received. The process of evaluating 
claims involves the use of estimates and a high degree of management judgment. Claims outstanding, 
the final determination of which could have a material impact on our financial results and certain 
subsidiaries and investments are detailed in Part II. Item 8. Financial Statements and Supplementary 
Data - Note 28 Commitments and Contingencies. In addition, any unasserted claims that later may 
become evident could have a material impact on our financial results and certain subsidiaries and 
investments.

Asset Retirement Obligations
Asset retirement obligations (ARO) associated with the retirement of long-lived assets are measured at 
fair value and recognized as Accounts payable and other or Other long-term liabilities in the period in 
which they can be reasonably determined. The fair value approximates the cost a third party would 
charge to perform the tasks necessary to retire such assets and is recognized at the present value of 
expected future cash flows. Discount rates used to present value the expected future cash flows range 
from 2.5% to 11.0% and 1.7% to 11.0% for the years ended December 31, 2017 and 2016, respectively. 
ARO is added to the carrying value of the associated asset and depreciated over the asset’s useful life. 
The corresponding liability is accreted over time through charges to earnings and is reduced by actual 
costs of decommissioning and reclamation. Our estimates of retirement costs could change as a result of 
changes in cost estimates and regulatory requirements. Currently, for the majority of our assets, there is 
96

insufficient data or information to reasonably determine the timing of settlement for estimating the fair 

value of the ARO. In these cases, the ARO cost is considered indeterminate for accounting purposes, as 

there is no data or information that can be derived from past practice, industry practice or the estimated 

economic life of the asset. 

In 2009, the NEB issued a decision related to the LMCI, which required holders of an authorization to 

operate a pipeline under the NEB Act to file a proposed process and mechanism to set aside funds to pay 

for future abandonment costs in respect of the sites in Canada used for the operation of a pipeline. The 

NEB’s decision stated that while pipeline companies are ultimately responsible for the full costs of 

abandoning pipelines, abandonment costs are a legitimate cost of providing service and are recoverable 

from the users of the pipeline upon approval by the NEB. Following the NEB’s final approval of the 

collection mechanism and the set-aside mechanism for LMCI, we began collecting and setting aside 

funds to cover future abandonment costs effective January 1, 2015. The funds collected are held in trust 

in accordance with the NEB decision. The funds collected from shippers are reported within 

Transportation and other services revenues and Restricted long-term investments. Concurrently, we 

reflect the future abandonment cost as an increase to Operating and administrative expense and Other 

long-term liabilities.

CHANGES IN ACCOUNTING POLICIES  

We previously performed our annual goodwill impairment test on October 1 of each fiscal year. Beginning 

with the quarter ended December 31, 2017, we moved the annual goodwill impairment test from October 

1 to April 1 to better align with the preparation and review of our business plan, which is used in the test. 

The change does not delay, accelerate or avoid an impairment charge. 

ADOPTION OF NEW STANDARDS  

Simplifying the Measurement of Goodwill Impairment  

Effective January 1, 2017, we early adopted Accounting Standards Update (ASU) 2017-04 and applied 

the standard on a prospective basis. Under the new guidance, goodwill impairment will now be the 

amount by which a reporting unit’s carrying value exceeds its fair value; this amount should not exceed 

the carrying amount of goodwill. We applied this standard as at December 31, 2017 in the measurement 

of the goodwill impairment relating to the gas midstream reporting unit. 

Clarifying the Definition of a Business in an Acquisition  

Effective January 1, 2017, we early adopted ASU 2017-01 on a prospective basis. The new standard was 

issued with the objective of adding guidance to assist entities with evaluating whether transactions should 

be accounted for as acquisitions (disposals) of assets or businesses. This accounting update was applied 

to acquisitions and dispositions that occurred in the year. 

Accounting for Intra-Entity Asset Transfers  

Effective January 1, 2017, we early adopted ASU 2016-16 on a modified retrospective basis. The new 

standard was issued with the intent of improving the accounting for the income tax consequences of intra-

entity asset transfers other than inventory. Under the new guidance, an entity should recognize the 

income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer 

occurs. The adoption of the pronouncement did not have a material impact on our consolidated financial 

statements. 

Improvements to Employee Share-Based Payment Accounting  

Effective January 1, 2017, we adopted ASU 2016-09 and applied certain amendments on a modified 

retrospective basis with the remaining amendments applied on a prospective basis. The new standard 

was issued with the intent of simplifying and improving several aspects of accounting for share-based 

payment transactions including the income tax consequences, classification of awards as either equity or 

97

certain rate-regulated operations, depreciation rates are approved by the regulator and the regulator may 

require periodic studies or technical updates on useful lives which may change depreciation rates. 

Postretirement Benefits

We maintain pension plans, which provide defined benefit and/or defined contribution pension benefits 

and other postretirement benefits (OPEB) to eligible retirees. Pension costs and obligations for the 

defined benefit pension plans are determined using actuarial methods and are funded through 

contributions determined using the projected benefit method, which incorporates management’s best 

estimates of future salary level, other cost escalations, retirement ages of employees and other actuarial 

factors including discount rates and mortality. We determine discount rates by reference to rates of high-

quality long-term corporate bonds with maturities that approximate the timing of future payments we 

anticipate making under each of the respective plans. These assumptions are reviewed annually by our 

actuaries. Actual results that differ from assumptions are amortized over future periods and therefore 

could materially affect the expense recognized and the recorded obligation in future periods. The actual 

return on plan assets exceeded the expectation by $174 million and $19 million for the years ended 

December 31, 2017 and 2016, respectively, as disclosed in Part II. Item 8. Financial Statements and 

Supplementary Data - Note 25 Pension and Other Postretirement Benefits. The difference between the 

actual and expected return on plan assets is amortized over the remaining service period of the active 

employees. 

The following sensitivity analysis identifies the impact on the December 31, 2017 Consolidated Financial 

Statements of a 0.5% change in key pension and OPEB assumptions.

(millions of Canadian dollars)

Pension

Decrease in discount rate

Decrease in expected return on assets

Decrease in rate of salary increase

OPEB

Decrease in discount rate

Decrease in expected return on assets

Contingent Liabilities

Canada

United States

Obligation

Expense

Obligation

Expense

255

—

(56)

27

—

26

12

(13)

1

—

71

—

(9)

18

—

3

5

(2)

(1)

1

Provisions for claims filed against us are determined on a case-by-case basis. Case estimates are 

reviewed on a regular basis and are updated as new information is received. The process of evaluating 

claims involves the use of estimates and a high degree of management judgment. Claims outstanding, 

the final determination of which could have a material impact on our financial results and certain 

subsidiaries and investments are detailed in Part II. Item 8. Financial Statements and Supplementary 

Data - Note 28 Commitments and Contingencies. In addition, any unasserted claims that later may 

become evident could have a material impact on our financial results and certain subsidiaries and 

investments.

Asset Retirement Obligations

Asset retirement obligations (ARO) associated with the retirement of long-lived assets are measured at 

fair value and recognized as Accounts payable and other or Other long-term liabilities in the period in 

which they can be reasonably determined. The fair value approximates the cost a third party would 

charge to perform the tasks necessary to retire such assets and is recognized at the present value of 

expected future cash flows. Discount rates used to present value the expected future cash flows range 

from 2.5% to 11.0% and 1.7% to 11.0% for the years ended December 31, 2017 and 2016, respectively. 

ARO is added to the carrying value of the associated asset and depreciated over the asset’s useful life. 

The corresponding liability is accreted over time through charges to earnings and is reduced by actual 

costs of decommissioning and reclamation. Our estimates of retirement costs could change as a result of 

changes in cost estimates and regulatory requirements. Currently, for the majority of our assets, there is 

insufficient data or information to reasonably determine the timing of settlement for estimating the fair 
value of the ARO. In these cases, the ARO cost is considered indeterminate for accounting purposes, as 
there is no data or information that can be derived from past practice, industry practice or the estimated 
economic life of the asset. 

In 2009, the NEB issued a decision related to the LMCI, which required holders of an authorization to 
operate a pipeline under the NEB Act to file a proposed process and mechanism to set aside funds to pay 
for future abandonment costs in respect of the sites in Canada used for the operation of a pipeline. The 
NEB’s decision stated that while pipeline companies are ultimately responsible for the full costs of 
abandoning pipelines, abandonment costs are a legitimate cost of providing service and are recoverable 
from the users of the pipeline upon approval by the NEB. Following the NEB’s final approval of the 
collection mechanism and the set-aside mechanism for LMCI, we began collecting and setting aside 
funds to cover future abandonment costs effective January 1, 2015. The funds collected are held in trust 
in accordance with the NEB decision. The funds collected from shippers are reported within 
Transportation and other services revenues and Restricted long-term investments. Concurrently, we 
reflect the future abandonment cost as an increase to Operating and administrative expense and Other 
long-term liabilities.

CHANGES IN ACCOUNTING POLICIES  

Goodwill 
We previously performed our annual goodwill impairment test on October 1 of each fiscal year. Beginning 
with the quarter ended December 31, 2017, we moved the annual goodwill impairment test from October 
1 to April 1 to better align with the preparation and review of our business plan, which is used in the test. 
The change does not delay, accelerate or avoid an impairment charge. 

ADOPTION OF NEW STANDARDS  
Simplifying the Measurement of Goodwill Impairment  
Effective January 1, 2017, we early adopted Accounting Standards Update (ASU) 2017-04 and applied 
the standard on a prospective basis. Under the new guidance, goodwill impairment will now be the 
amount by which a reporting unit’s carrying value exceeds its fair value; this amount should not exceed 
the carrying amount of goodwill. We applied this standard as at December 31, 2017 in the measurement 
of the goodwill impairment relating to the gas midstream reporting unit. 

Clarifying the Definition of a Business in an Acquisition  
Effective January 1, 2017, we early adopted ASU 2017-01 on a prospective basis. The new standard was 
issued with the objective of adding guidance to assist entities with evaluating whether transactions should 
be accounted for as acquisitions (disposals) of assets or businesses. This accounting update was applied 
to acquisitions and dispositions that occurred in the year. 

Accounting for Intra-Entity Asset Transfers  
Effective January 1, 2017, we early adopted ASU 2016-16 on a modified retrospective basis. The new 
standard was issued with the intent of improving the accounting for the income tax consequences of intra-
entity asset transfers other than inventory. Under the new guidance, an entity should recognize the 
income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer 
occurs. The adoption of the pronouncement did not have a material impact on our consolidated financial 
statements. 

Improvements to Employee Share-Based Payment Accounting  
Effective January 1, 2017, we adopted ASU 2016-09 and applied certain amendments on a modified 
retrospective basis with the remaining amendments applied on a prospective basis. The new standard 
was issued with the intent of simplifying and improving several aspects of accounting for share-based 
payment transactions including the income tax consequences, classification of awards as either equity or 

96

97

liabilities, and classification on the statement of cash flows. The adoption of the pronouncement did not 
have a material impact on our consolidated financial statements.  

applied on a retrospective basis for the statement of earnings presentation component and a prospective 

basis for the capitalization component. We do not expect the adoption of this accounting update to have a 

Simplifying the Embedded Derivatives Analysis for Debt Instruments  
Effective January 1, 2017, we adopted ASU 2016-06 on a modified retrospective basis. The new 
guidance simplifies the embedded derivative analysis for debt instruments containing contingent call or 
put options. The adoption of the pronouncement did not have a material impact on our consolidated 
financial statements.  

FUTURE ACCOUNTING POLICY CHANGES  
Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
ASU 2018-02 was issued in February 2018 to address a specific consequence of the TCJA. This 
accounting update allows a reclassification from accumulated other comprehensive income to retained 
earnings for stranded tax effects resulting from TCJA. The amendments eliminate the stranded tax effects 
that were created as a result of the reduction of historical U.S. federal corporate income tax rate to the 
newly enacted U.S. federal corporate income tax rate. The accounting update is effective January 1, 
2019, with early adoption permitted, and is to be applied either in the period of adoption or retrospectively 
to each period in which the effect of the change in the U.S. federal corporate income tax rate in the TCJA 
is recognized. We are currently assessing the impact of the new standard on the consolidated financial 
statements. 

Improvements to Accounting for Hedging Activities 
ASU 2017-12 was issued in August 2017 with the objective of better aligning a company’s risk 
management activities and the resulting hedge accounting reflected in the financial statements. The 
accounting update allows cash flow hedging of contractually specified components in financial and non-
financial items. Under the new guidance, hedge ineffectiveness is no longer required to be measured and 
hedging instruments’ fair value changes will be recorded in the same income statement line as the 
hedged item. The ASU also allows the initial quantitative hedge effectiveness assessment to be 
performed at any time before the end of the quarter in which the hedge is designated. After initial 
quantitative testing is performed, an ongoing qualitative effectiveness assessment is permitted. The 
accounting update is effective January 1, 2019 and is to be applied on a modified retrospective basis. We 
are currently assessing the impact of the new standard on our consolidated financial statements. 

Clarifying Guidance on the Application of Modification Accounting on Stock Compensation 
ASU 2017-09 was issued in May 2017 with the intent to clarify the scope of modification accounting and 
when it should be applied to a change to the terms or conditions of a share based payment award.   
Under the new guidance, modification accounting is required for all changes to share based payment 
awards, unless all of the following are met: 1) there is no change to the fair value of the award, 2) the 
vesting conditions have not changed, and 3) the classification of the award as an equity instrument or a 
debt instrument has not changed. The accounting update is effective January 1, 2018 and will be applied 
on a prospective basis. We do not expect the adoption of this accounting update to have a material 
impact on our consolidated financial statements. 

Amending the Amortization Period for Certain Callable Debt Securities Purchased at a Premium  
ASU 2017-08 was issued in March 2017 with the intent of shortening the amortization period to the 
earliest call date for certain callable debt securities held at a premium. The accounting update is effective 
January 1, 2019 and will be applied on a modified retrospective basis. We are currently assessing the 
impact of the new standard on our consolidated financial statements. 

Improving the Presentation of Net Periodic Benefit Cost related to Defined Benefit Plans  
ASU 2017-07 was issued in March 2017 primarily to improve the income statement presentation of the 
components of net periodic pension cost and net periodic postretirement benefit cost for an entity’s 
sponsored defined benefit pension and OPEB plans. In addition, only the service cost component of net 
benefit cost is eligible for capitalization. The accounting update is effective January 1, 2018 and will be 

material impact on our consolidated financial statements.  

Clarifying Guidance on Derecognition and Partial Sales of Nonfinancial Assets  

ASU 2017-05 was issued in February 2017 with the intent of clarifying the scope of asset derecognition 

guidance and accounting for partial sales of nonfinancial assets. The ASU clarifies the scope provisions of 

nonfinancial assets and how to allocate consideration to each distinct asset, and amends the guidance for 

derecognition of a distinct nonfinancial asset in partial sale transactions. The accounting update is 

effective January 1, 2018 and will be applied on a modified retrospective basis. We do not expect the 

adoption of this accounting update to have a material impact on our consolidated financial statements.  

Clarifying the Presentation of Restricted Cash in the Statement of Cash Flows 

ASU 2016-18 was issued in November 2016 with the intent to clarify guidance on the classification and 

presentation of changes in restricted cash and restricted cash equivalents within the statement of cash 

flows. The accounting update requires that changes in restricted cash and restricted cash equivalents be 

included within cash and cash equivalents when reconciling the opening and closing period amounts 

shown on the statement of cash flows. We currently present the changes in restricted cash and restricted 

cash equivalents under investing activities in the Consolidated Statement of Cash Flows. The accounting 

update is effective January 1, 2018 and will be applied on a retrospective basis. We will amend the 

presentation in the Consolidated Statement of Cash Flows to include restricted cash and restricted cash 

equivalents with cash and cash equivalents and we will retrospectively reclassify all periods presented. 

Simplifying Cash Flow Classification 

ASU 2016-15 was issued in August 2016 with the intent of reducing diversity in practice of how certain 

cash receipts and cash payments are classified in the Consolidated Statement of Cash Flows. The new 

guidance addresses eight specific presentation issues. The accounting update is effective January 1, 

2018 and will be applied on a retrospective basis. We assessed each of the eight specific presentation 

issues and the adoption of this ASU does not have a material impact on our consolidated financial 

statements. 

Accounting for Credit Losses  

ASU 2016-13 was issued in June 2016 with the intent of providing financial statement users with more 

useful information about the expected credit losses on financial instruments and other commitments to 

extend credit held by a reporting entity at each reporting date. Current treatment uses the incurred loss 

methodology for recognizing credit losses that delays the recognition until it is probable a loss has been 

incurred. The accounting update adds a new impairment model, known as the current expected credit 

loss model, which is based on expected losses rather than incurred losses. Under the new guidance, an 

entity recognizes as an allowance its estimate of expected credit losses, which the Financial Accounting 

Standards Board believes will result in more timely recognition of such losses. We are currently assessing 

the impact of the new standard on our consolidated financial statements. The accounting update is 

effective January 1, 2020.  

Recognition of Leases  

ASU 2016-02 was issued in February 2016 with the intent to increase transparency and comparability 

among organizations. It requires lessees of operating lease arrangements to recognize lease assets and 

lease liabilities on the statement of financial position and disclose additional key information about lease 

agreements. The accounting update also replaces the current definition of a lease and requires that an 

arrangement be recognized as a lease when a customer has the right to obtain substantially all of the 

economic benefits from the use of an asset, as well as the right to direct the use of the asset. We are 

currently gathering a complete inventory of our lease contracts in order to assess the impact of the new 

standard on our consolidated financial statements. The accounting update is effective January 1, 2019 

and will be applied using a modified retrospective approach. 

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99

liabilities, and classification on the statement of cash flows. The adoption of the pronouncement did not 

have a material impact on our consolidated financial statements.  

Simplifying the Embedded Derivatives Analysis for Debt Instruments  

Effective January 1, 2017, we adopted ASU 2016-06 on a modified retrospective basis. The new 

guidance simplifies the embedded derivative analysis for debt instruments containing contingent call or 

put options. The adoption of the pronouncement did not have a material impact on our consolidated 

financial statements.  

FUTURE ACCOUNTING POLICY CHANGES  

Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income

ASU 2018-02 was issued in February 2018 to address a specific consequence of the TCJA. This 

accounting update allows a reclassification from accumulated other comprehensive income to retained 

earnings for stranded tax effects resulting from TCJA. The amendments eliminate the stranded tax effects 

that were created as a result of the reduction of historical U.S. federal corporate income tax rate to the 

newly enacted U.S. federal corporate income tax rate. The accounting update is effective January 1, 

2019, with early adoption permitted, and is to be applied either in the period of adoption or retrospectively 

to each period in which the effect of the change in the U.S. federal corporate income tax rate in the TCJA 

is recognized. We are currently assessing the impact of the new standard on the consolidated financial 

statements. 

Improvements to Accounting for Hedging Activities 

ASU 2017-12 was issued in August 2017 with the objective of better aligning a company’s risk 

management activities and the resulting hedge accounting reflected in the financial statements. The 

accounting update allows cash flow hedging of contractually specified components in financial and non-

financial items. Under the new guidance, hedge ineffectiveness is no longer required to be measured and 

hedging instruments’ fair value changes will be recorded in the same income statement line as the 

hedged item. The ASU also allows the initial quantitative hedge effectiveness assessment to be 

performed at any time before the end of the quarter in which the hedge is designated. After initial 

quantitative testing is performed, an ongoing qualitative effectiveness assessment is permitted. The 

accounting update is effective January 1, 2019 and is to be applied on a modified retrospective basis. We 

are currently assessing the impact of the new standard on our consolidated financial statements. 

Clarifying Guidance on the Application of Modification Accounting on Stock Compensation 

ASU 2017-09 was issued in May 2017 with the intent to clarify the scope of modification accounting and 

when it should be applied to a change to the terms or conditions of a share based payment award.   

Under the new guidance, modification accounting is required for all changes to share based payment 

awards, unless all of the following are met: 1) there is no change to the fair value of the award, 2) the 

vesting conditions have not changed, and 3) the classification of the award as an equity instrument or a 

debt instrument has not changed. The accounting update is effective January 1, 2018 and will be applied 

on a prospective basis. We do not expect the adoption of this accounting update to have a material 

impact on our consolidated financial statements. 

Amending the Amortization Period for Certain Callable Debt Securities Purchased at a Premium  

ASU 2017-08 was issued in March 2017 with the intent of shortening the amortization period to the 

earliest call date for certain callable debt securities held at a premium. The accounting update is effective 

January 1, 2019 and will be applied on a modified retrospective basis. We are currently assessing the 

impact of the new standard on our consolidated financial statements. 

Improving the Presentation of Net Periodic Benefit Cost related to Defined Benefit Plans  

ASU 2017-07 was issued in March 2017 primarily to improve the income statement presentation of the 

components of net periodic pension cost and net periodic postretirement benefit cost for an entity’s 

sponsored defined benefit pension and OPEB plans. In addition, only the service cost component of net 

benefit cost is eligible for capitalization. The accounting update is effective January 1, 2018 and will be 

applied on a retrospective basis for the statement of earnings presentation component and a prospective 
basis for the capitalization component. We do not expect the adoption of this accounting update to have a 
material impact on our consolidated financial statements.  

Clarifying Guidance on Derecognition and Partial Sales of Nonfinancial Assets  
ASU 2017-05 was issued in February 2017 with the intent of clarifying the scope of asset derecognition 
guidance and accounting for partial sales of nonfinancial assets. The ASU clarifies the scope provisions of 
nonfinancial assets and how to allocate consideration to each distinct asset, and amends the guidance for 
derecognition of a distinct nonfinancial asset in partial sale transactions. The accounting update is 
effective January 1, 2018 and will be applied on a modified retrospective basis. We do not expect the 
adoption of this accounting update to have a material impact on our consolidated financial statements.  

Clarifying the Presentation of Restricted Cash in the Statement of Cash Flows 
ASU 2016-18 was issued in November 2016 with the intent to clarify guidance on the classification and 
presentation of changes in restricted cash and restricted cash equivalents within the statement of cash 
flows. The accounting update requires that changes in restricted cash and restricted cash equivalents be 
included within cash and cash equivalents when reconciling the opening and closing period amounts 
shown on the statement of cash flows. We currently present the changes in restricted cash and restricted 
cash equivalents under investing activities in the Consolidated Statement of Cash Flows. The accounting 
update is effective January 1, 2018 and will be applied on a retrospective basis. We will amend the 
presentation in the Consolidated Statement of Cash Flows to include restricted cash and restricted cash 
equivalents with cash and cash equivalents and we will retrospectively reclassify all periods presented. 

Simplifying Cash Flow Classification 
ASU 2016-15 was issued in August 2016 with the intent of reducing diversity in practice of how certain 
cash receipts and cash payments are classified in the Consolidated Statement of Cash Flows. The new 
guidance addresses eight specific presentation issues. The accounting update is effective January 1, 
2018 and will be applied on a retrospective basis. We assessed each of the eight specific presentation 
issues and the adoption of this ASU does not have a material impact on our consolidated financial 
statements. 

Accounting for Credit Losses  
ASU 2016-13 was issued in June 2016 with the intent of providing financial statement users with more 
useful information about the expected credit losses on financial instruments and other commitments to 
extend credit held by a reporting entity at each reporting date. Current treatment uses the incurred loss 
methodology for recognizing credit losses that delays the recognition until it is probable a loss has been 
incurred. The accounting update adds a new impairment model, known as the current expected credit 
loss model, which is based on expected losses rather than incurred losses. Under the new guidance, an 
entity recognizes as an allowance its estimate of expected credit losses, which the Financial Accounting 
Standards Board believes will result in more timely recognition of such losses. We are currently assessing 
the impact of the new standard on our consolidated financial statements. The accounting update is 
effective January 1, 2020.  

Recognition of Leases  
ASU 2016-02 was issued in February 2016 with the intent to increase transparency and comparability 
among organizations. It requires lessees of operating lease arrangements to recognize lease assets and 
lease liabilities on the statement of financial position and disclose additional key information about lease 
agreements. The accounting update also replaces the current definition of a lease and requires that an 
arrangement be recognized as a lease when a customer has the right to obtain substantially all of the 
economic benefits from the use of an asset, as well as the right to direct the use of the asset. We are 
currently gathering a complete inventory of our lease contracts in order to assess the impact of the new 
standard on our consolidated financial statements. The accounting update is effective January 1, 2019 
and will be applied using a modified retrospective approach. 

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99

Recognition and Measurement of Financial Assets and Liabilities  
ASU 2016-01 was issued in January 2016 with the intent to address certain aspects of recognition, 
measurement, presentation and disclosure of financial assets and liabilities. Investments in equity 
securities, excluding equity method and consolidated investments, are no longer classified as trading or 
available-for-sale securities. All investments in equity securities with readily determinable fair values are 
classified as investments at fair value through net income. Investments in equity securities without readily 
determinable fair values are measured using the fair value measurement alternative and are recorded at 
cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly 
transactions for an identical or similar investment of the same issuer. Investments in equity securities 
measured using the fair value measurement alternative are reviewed for indicators of impairment each 
reporting period. Fair value of financial instruments for disclosure purposes is measured using exit price. 
The accounting update is effective January 1, 2018 and applied on a prospective basis. We do not expect 
the adoption of this accounting update to have a material impact on our consolidated financial statements. 

Revenue from Contracts with Customers  
ASU 2014-09 was issued in 2014 with the intent of significantly enhancing consistency and comparability 
of revenue recognition practices across entities and industries. The new standard establishes a single, 
principles-based five-step model to be applied to all contracts with customers and introduces new and 
enhanced disclosure requirements. It also requires the use of more estimates and judgments than the 
present standards in addition to additional disclosures. The new standard is effective January 1, 2018. 
The new standard permits either a full retrospective method of adoption with restatement of all prior 
periods presented, or a modified retrospective method with the cumulative effect of applying the new 
standard recognized as an adjustment to opening retained earnings in the period of adoption. We have 
decided to adopt the new standard using the modified retrospective method.  

We have reviewed our revenue contracts in order to evaluate the effect of the new standard on our 
revenue recognition practices. Based on our assessment to-date, the adoption of the new standard will 
have the following impact to our financial statements: 

•  A change in presentation in the Gas Distribution business related to payments to customers 
under the earnings sharing mechanism which are currently shown as an expense in the 
Consolidated Statements of Earnings. Under the new standard, these payments will be reflected 
as a reduction of revenue.  

•  Estimates of variable consideration, required under the new standard for certain Liquids 

Pipelines, Gas Transmission and Midstream and Green Power and Transmission revenue 
contracts as well as the allocation of the transaction price for certain Liquids Pipelines revenue 
contracts, may result in changes to the pattern or timing of revenue recognition for those 
contracts.  

•  Non-cash consideration received in the form of a percentage of the products derived from 

processing natural gas in the Gas Transmission and Midstream business was previously 
accounted for as revenue when the commodity was sold to third parties. Under the new standard, 
the non-cash consideration will be accounted for as revenue when processing services are 
performed. The commodity will continue to be accounted for as revenue when it is subsequently 
sold to third parties. The impact of this change will be an increase in costs and revenues due to 
the recognition of this non-cash consideration. 

•  Service fee revenue, from processing natural gas for certain contracts in the Gas Transmission 

and Midstream business whereby Enbridge purchases natural gas at the wellhead, then 
processes and subsequently sells the gas, was previously presented as revenue. Under the new 
standard, processing fees charged on natural gas purchased by Enbridge are presented as a 
reduction of commodity costs upon the transfer of control of the natural gas at the wellhead. 
•  Revenue from certain contracts in the Gas Transmission and Midstream business that provide for 
Enbridge to process and sell customers’ natural gas and retain a percentage of the resulting 
processed natural gas and/or NGLs as payment for processing services rendered, commonly 
referred to as Percentage of Proceeds and Percentage of Liquids contracts, was previously 

presented on a gross basis whereby Enbridge recorded one hundred percent of the value of the 

natural gas and products sold as revenue, with the cost of the natural gas purchased recorded as 

commodity cost. Under the new standard only Enbridge’s share of the products retained and sold 

is presented as revenue and no commodity cost is recorded.  

•  Certain payments received from customers to offset the cost of constructing assets required to 

provide services to those customers, referred to as Contributions in Aid of Construction (CIAC) 

were previously recorded as reductions of property, plant and equipment regardless of whether 

the amounts were imposed by regulation or negotiated. Under the new standard, negotiated 

CIACs are deemed to be advance payments for services and must be recognized as revenue 

when those future services are provided. Negotiated CIACs will be accounted for as deferred 

revenue and recognized over the term of the associated revenue contract.  

Upon adoption, we will recognize the significant cumulative effect of initially applying the new standard as 

an increase in the opening balance of retained deficit of approximately $120 million, an increase in 

property, plant and equipment of $130 million and an increase in deferred revenue of $120 million, subject 

to final determination, as at January 1, 2018. The adoption of the new standard will also result in changes 

in classification between Revenue and Commodity costs as discussed above. 

We have also developed and tested processes to generate the disclosures which will be required under 

the new standard commencing in the first quarter of 2018. 

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT 

MARKET RISK

Our earnings, cash flows and other comprehensive income (OCI) are subject to movements in foreign 

exchange rates, interest rates, commodity prices and our share price.

The following summarizes the types of market risks to which we are exposed and the risk management 

instruments used to mitigate them. We use a combination of qualifying and non-qualifying derivative 

instruments to manage the risks noted below. 

Foreign Exchange Risk 

We generate certain revenues, incur expenses, and hold a number of investments and subsidiaries that 

are denominated in currencies other than Canadian dollars. As a result, our earnings, cash flows and OCI 

are exposed to fluctuations resulting from foreign exchange rate variability. 

We employ financial derivative instruments to hedge foreign currency denominated earnings exposure. A 

combination of qualifying and non-qualifying derivative instruments are used to hedge anticipated foreign 

currency denominated revenues and expenses, and to manage variability in cash flows. We hedge 

certain net investments in United States dollar denominated investments and subsidiaries using foreign 

currency derivatives and United States dollar denominated debt. 

Interest Rate Risk 

Our earnings and cash flows are exposed to short-term interest rate variability due to the regular repricing 

of our variable rate debt, primarily commercial paper. Pay fixed-receive floating interest rate swaps are 

used to hedge against the effect of future interest rate movements. We have implemented a program to 

significantly mitigate the impact of short-term interest rate volatility on interest expense via execution of 

floating to fixed interest rate swaps with an average swap rate of 2.6%. 

As a result of the Merger Transaction, we are exposed to changes in the fair value of fixed rate debt that 

arise as a result of the changes in market interest rates. Pay floating-receive fixed interest rate swaps are 

used to hedge against future changes to the fair value of fixed rate debt. We have assumed a program 

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101

 
 
 
Recognition and Measurement of Financial Assets and Liabilities  

ASU 2016-01 was issued in January 2016 with the intent to address certain aspects of recognition, 

measurement, presentation and disclosure of financial assets and liabilities. Investments in equity 

securities, excluding equity method and consolidated investments, are no longer classified as trading or 

available-for-sale securities. All investments in equity securities with readily determinable fair values are 

classified as investments at fair value through net income. Investments in equity securities without readily 

determinable fair values are measured using the fair value measurement alternative and are recorded at 

cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly 

transactions for an identical or similar investment of the same issuer. Investments in equity securities 

measured using the fair value measurement alternative are reviewed for indicators of impairment each 

reporting period. Fair value of financial instruments for disclosure purposes is measured using exit price. 

The accounting update is effective January 1, 2018 and applied on a prospective basis. We do not expect 

the adoption of this accounting update to have a material impact on our consolidated financial statements. 

Revenue from Contracts with Customers  

ASU 2014-09 was issued in 2014 with the intent of significantly enhancing consistency and comparability 

of revenue recognition practices across entities and industries. The new standard establishes a single, 

principles-based five-step model to be applied to all contracts with customers and introduces new and 

enhanced disclosure requirements. It also requires the use of more estimates and judgments than the 

present standards in addition to additional disclosures. The new standard is effective January 1, 2018. 

The new standard permits either a full retrospective method of adoption with restatement of all prior 

periods presented, or a modified retrospective method with the cumulative effect of applying the new 

standard recognized as an adjustment to opening retained earnings in the period of adoption. We have 

decided to adopt the new standard using the modified retrospective method.  

We have reviewed our revenue contracts in order to evaluate the effect of the new standard on our 

revenue recognition practices. Based on our assessment to-date, the adoption of the new standard will 

have the following impact to our financial statements: 

•  A change in presentation in the Gas Distribution business related to payments to customers 

under the earnings sharing mechanism which are currently shown as an expense in the 

Consolidated Statements of Earnings. Under the new standard, these payments will be reflected 

as a reduction of revenue.  

•  Estimates of variable consideration, required under the new standard for certain Liquids 

Pipelines, Gas Transmission and Midstream and Green Power and Transmission revenue 

contracts as well as the allocation of the transaction price for certain Liquids Pipelines revenue 

contracts, may result in changes to the pattern or timing of revenue recognition for those 

contracts.  

•  Non-cash consideration received in the form of a percentage of the products derived from 

processing natural gas in the Gas Transmission and Midstream business was previously 

accounted for as revenue when the commodity was sold to third parties. Under the new standard, 

the non-cash consideration will be accounted for as revenue when processing services are 

performed. The commodity will continue to be accounted for as revenue when it is subsequently 

sold to third parties. The impact of this change will be an increase in costs and revenues due to 

the recognition of this non-cash consideration. 

•  Service fee revenue, from processing natural gas for certain contracts in the Gas Transmission 

and Midstream business whereby Enbridge purchases natural gas at the wellhead, then 

processes and subsequently sells the gas, was previously presented as revenue. Under the new 

standard, processing fees charged on natural gas purchased by Enbridge are presented as a 

reduction of commodity costs upon the transfer of control of the natural gas at the wellhead. 

•  Revenue from certain contracts in the Gas Transmission and Midstream business that provide for 

Enbridge to process and sell customers’ natural gas and retain a percentage of the resulting 

processed natural gas and/or NGLs as payment for processing services rendered, commonly 

referred to as Percentage of Proceeds and Percentage of Liquids contracts, was previously 

presented on a gross basis whereby Enbridge recorded one hundred percent of the value of the 
natural gas and products sold as revenue, with the cost of the natural gas purchased recorded as 
commodity cost. Under the new standard only Enbridge’s share of the products retained and sold 
is presented as revenue and no commodity cost is recorded.  

•  Certain payments received from customers to offset the cost of constructing assets required to 
provide services to those customers, referred to as Contributions in Aid of Construction (CIAC) 
were previously recorded as reductions of property, plant and equipment regardless of whether 
the amounts were imposed by regulation or negotiated. Under the new standard, negotiated 
CIACs are deemed to be advance payments for services and must be recognized as revenue 
when those future services are provided. Negotiated CIACs will be accounted for as deferred 
revenue and recognized over the term of the associated revenue contract.  

Upon adoption, we will recognize the significant cumulative effect of initially applying the new standard as 
an increase in the opening balance of retained deficit of approximately $120 million, an increase in 
property, plant and equipment of $130 million and an increase in deferred revenue of $120 million, subject 
to final determination, as at January 1, 2018. The adoption of the new standard will also result in changes 
in classification between Revenue and Commodity costs as discussed above. 

We have also developed and tested processes to generate the disclosures which will be required under 
the new standard commencing in the first quarter of 2018. 

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT 
MARKET RISK

Our earnings, cash flows and other comprehensive income (OCI) are subject to movements in foreign 
exchange rates, interest rates, commodity prices and our share price.

The following summarizes the types of market risks to which we are exposed and the risk management 
instruments used to mitigate them. We use a combination of qualifying and non-qualifying derivative 
instruments to manage the risks noted below. 

Foreign Exchange Risk 
We generate certain revenues, incur expenses, and hold a number of investments and subsidiaries that 
are denominated in currencies other than Canadian dollars. As a result, our earnings, cash flows and OCI 
are exposed to fluctuations resulting from foreign exchange rate variability. 

We employ financial derivative instruments to hedge foreign currency denominated earnings exposure. A 
combination of qualifying and non-qualifying derivative instruments are used to hedge anticipated foreign 
currency denominated revenues and expenses, and to manage variability in cash flows. We hedge 
certain net investments in United States dollar denominated investments and subsidiaries using foreign 
currency derivatives and United States dollar denominated debt. 

Interest Rate Risk 
Our earnings and cash flows are exposed to short-term interest rate variability due to the regular repricing 
of our variable rate debt, primarily commercial paper. Pay fixed-receive floating interest rate swaps are 
used to hedge against the effect of future interest rate movements. We have implemented a program to 
significantly mitigate the impact of short-term interest rate volatility on interest expense via execution of 
floating to fixed interest rate swaps with an average swap rate of 2.6%. 

As a result of the Merger Transaction, we are exposed to changes in the fair value of fixed rate debt that 
arise as a result of the changes in market interest rates. Pay floating-receive fixed interest rate swaps are 
used to hedge against future changes to the fair value of fixed rate debt. We have assumed a program 

100

101

 
 
 
within our subsidiaries to mitigate the impact of fluctuations in the fair value of fixed rate debt via 
execution of fixed to floating interest rate swaps with an average swap rate of 2.2%. 

Our earnings and cash flows are also exposed to variability in longer term interest rates ahead of 
anticipated fixed rate term debt issuances. Forward starting interest rate swaps are used to hedge against 
the effect of future interest rate movements. We have assumed a program within some of our subsidiaries 
to mitigate our exposure to long-term interest rate variability on select forecast term debt issuances via 
execution of floating to fixed interest rate swaps with an average swap rate of 3.1%. 

We also monitor our debt portfolio mix of fixed and variable rate debt instruments to maintain a 
consolidated portfolio of debt within the Board of Directors approved policy limit of a maximum of 25% 
floating rate debt as a percentage of total debt outstanding. Effective January 1, 2018, the Board of 
Directors approved a policy limit increase of a maximum of 30% floating rate debt as a percentage of total 
debt outstanding. We primarily use qualifying derivative instruments to manage interest rate risk. 

Commodity Price Risk 
Our earnings and cash flows are exposed to changes in commodity prices as a result of our ownership 
interests in certain assets and investments, as well as through the activities of our energy services 
subsidiaries. These commodities include natural gas, crude oil, power and NGL. We employ financial and 
physical derivative instruments to fix a portion of the variable price exposures that arise from physical 
transactions involving these commodities. We use primarily non-qualifying derivative instruments to 
manage commodity price risk. 

Emission Allowance Price Risk 
Emission allowance price risk is the risk of gain or loss due to changes in the market price of emission 
allowances that our gas distribution business is required to purchase for itself and most of its customers 
to meet GHG compliance obligations under the Ontario Cap and Trade framework. Similar to the gas 
supply procurement framework, the OEB's framework for emission allowance procurement allows 
recovery of fluctuations in emission allowance prices in customer rates, subject to OEB approval. 

Equity Price Risk 
Equity price risk is the risk of earnings fluctuations due to changes in our share price. We have exposure 
to our own common share price through the issuance of various forms of stock-based compensation, 
which affect earnings through revaluation of the outstanding units every period. We use equity derivatives 
to manage the earnings volatility derived from 1 form of stock-based compensation, restricted share units. 
We use a combination of qualifying and non-qualifying derivative instruments to manage equity price risk.

Market Risk Management
We have a Risk Policy to minimize the likelihood that adverse earnings impacts arising from movements 
in market prices will exceed a defined risk tolerance. We identify and measure all material market risks 
including commodity price risks, interest rate risks, foreign exchange risk, emission allowance price risk 
and equity price risk using a standardized measurement methodology. Our market risk metric 
consolidates the exposure after accounting for the impact of offsetting risks and limits the consolidated 
earnings volatility arising from market related risks to an acceptable approved risk tolerance threshold. 

We use Earnings-at-Risk (EaR), a statistically derived measurement, to quantify losses that could 
potentially result from adverse market price movements over a one month holding period for price 
sensitive non-derivative exposures and for derivative instruments we hold or issue as recorded on the 
balance sheet as at December 31, 2017. EaR assumes no further mitigating actions are taken to hedge 
or otherwise minimize exposures. The selection of a one month holding period reflects the mix of price 
risk sensitive assets at Enbridge. EaR calculates the annual earnings impact of market price movements 
over a one month period assuming no action is taken to hedge or otherwise mitigate exposures. As a 
practical matter, a large portion of Enbridge’s exposure could be hedged or unwound in a much shorter 
period if required to mitigate the risks.

102

The consolidated EaR policy limit for Enbridge is 5% of its forward 12 month forecast normalized 

earnings. EaR incorporates a Monte Carlo simulation, a 97.5 percent confidence level, a risk 

measurement horizon of one year (forward looking), a holding period of one month, and includes financial 

derivative instruments, other financial instruments, commodity derivative instruments, other commodity 

and executory contracts, positions and earnings or cash flows from anticipated transactions. EaR at 

December 31, 2017 and 2016 is 1.7% and 2.8% or $68 million and $59 million, respectively.

Effective January 1, 2018, the Board of Directors approved to change the market risk metric to Cash-

Flows-at-Risk (CFaR) and the consolidated CFaR limit will be 3.5% of forward 12 month normalized cash 

flow. The policy change will align the market risk metric with other key results metrics in the organization.

LIQUIDITY RISK 

Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments 

and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 

12 month rolling time period to determine whether sufficient funds will be available and maintain 

substantial capacity under our committed bank lines of credit to address any contingencies. Our primary 

sources of liquidity and capital resources are funds generated from operations, the issuance of 

commercial paper and draws under committed credit facilities and long-term debt, which includes 

debentures and medium-term notes. We also maintain current shelf prospectuses with securities 

regulators which enables, subject to market conditions, ready access to either the Canadian or United 

States public capital markets. In addition, we maintain sufficient liquidity through committed credit facilities 

with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated 

requirements for approximately one year without accessing the capital markets. We are in compliance 

with all the terms and conditions of our committed credit facility agreements and term debt indentures as 

at December 31, 2017. As a result, all credit facilities are available to us and the banks are obligated to 

fund and have been funding us under the terms of the facilities. 

CREDIT RISK 

Entering into derivative instruments may result in exposure to credit risk from the possibility that a 

counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk 

management transactions primarily with institutions that possess investment grade credit ratings. Credit 

risk relating to derivative counterparties is mitigated by credit exposure limits and contractual 

requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using 

external credit rating services and other analytical tools.

We generally have a policy of entering into individual International Swaps and Derivatives 

Association, Inc. agreements or other similar derivative agreements with the majority of our financial 

derivative counterparties. These agreements provide for the net settlement of derivative instruments 

outstanding with specific counterparties in the event of bankruptcy or other significant credit events, and 

reduces our credit risk exposure on financial derivative asset positions outstanding with the 

counterparties in these particular circumstances.

Credit risk also arises from trade and other long-term receivables, and is mitigated through credit 

exposure limits and contractual requirements, assessment of credit ratings and netting arrangements. 

Within EGD and Union Gas, credit risk is mitigated by the utilities' large and diversified customer base 

and the ability to recover an estimate for doubtful accounts through the ratemaking process. We actively 

monitor the financial strength of large industrial customers and, in select cases, have obtained additional 

security to minimize the risk of default on receivables. Generally, we classify and provide for receivables 

older than 20 days as past due. The maximum exposure to credit risk related to non-derivative financial 

assets is their carrying value.

103

 
 
 
 
 
within our subsidiaries to mitigate the impact of fluctuations in the fair value of fixed rate debt via 

execution of fixed to floating interest rate swaps with an average swap rate of 2.2%. 

Our earnings and cash flows are also exposed to variability in longer term interest rates ahead of 

anticipated fixed rate term debt issuances. Forward starting interest rate swaps are used to hedge against 

the effect of future interest rate movements. We have assumed a program within some of our subsidiaries 

to mitigate our exposure to long-term interest rate variability on select forecast term debt issuances via 

execution of floating to fixed interest rate swaps with an average swap rate of 3.1%. 

We also monitor our debt portfolio mix of fixed and variable rate debt instruments to maintain a 

consolidated portfolio of debt within the Board of Directors approved policy limit of a maximum of 25% 

floating rate debt as a percentage of total debt outstanding. Effective January 1, 2018, the Board of 

Directors approved a policy limit increase of a maximum of 30% floating rate debt as a percentage of total 

debt outstanding. We primarily use qualifying derivative instruments to manage interest rate risk. 

Commodity Price Risk 

Our earnings and cash flows are exposed to changes in commodity prices as a result of our ownership 

interests in certain assets and investments, as well as through the activities of our energy services 

subsidiaries. These commodities include natural gas, crude oil, power and NGL. We employ financial and 

physical derivative instruments to fix a portion of the variable price exposures that arise from physical 

transactions involving these commodities. We use primarily non-qualifying derivative instruments to 

manage commodity price risk. 

Emission Allowance Price Risk 

Emission allowance price risk is the risk of gain or loss due to changes in the market price of emission 

allowances that our gas distribution business is required to purchase for itself and most of its customers 

to meet GHG compliance obligations under the Ontario Cap and Trade framework. Similar to the gas 

supply procurement framework, the OEB's framework for emission allowance procurement allows 

recovery of fluctuations in emission allowance prices in customer rates, subject to OEB approval. 

Equity Price Risk 

Equity price risk is the risk of earnings fluctuations due to changes in our share price. We have exposure 

to our own common share price through the issuance of various forms of stock-based compensation, 

which affect earnings through revaluation of the outstanding units every period. We use equity derivatives 

to manage the earnings volatility derived from 1 form of stock-based compensation, restricted share units. 

We use a combination of qualifying and non-qualifying derivative instruments to manage equity price risk.

Market Risk Management

We have a Risk Policy to minimize the likelihood that adverse earnings impacts arising from movements 

in market prices will exceed a defined risk tolerance. We identify and measure all material market risks 

including commodity price risks, interest rate risks, foreign exchange risk, emission allowance price risk 

and equity price risk using a standardized measurement methodology. Our market risk metric 

consolidates the exposure after accounting for the impact of offsetting risks and limits the consolidated 

earnings volatility arising from market related risks to an acceptable approved risk tolerance threshold. 

We use Earnings-at-Risk (EaR), a statistically derived measurement, to quantify losses that could 

potentially result from adverse market price movements over a one month holding period for price 

sensitive non-derivative exposures and for derivative instruments we hold or issue as recorded on the 

balance sheet as at December 31, 2017. EaR assumes no further mitigating actions are taken to hedge 

or otherwise minimize exposures. The selection of a one month holding period reflects the mix of price 

risk sensitive assets at Enbridge. EaR calculates the annual earnings impact of market price movements 

over a one month period assuming no action is taken to hedge or otherwise mitigate exposures. As a 

practical matter, a large portion of Enbridge’s exposure could be hedged or unwound in a much shorter 

period if required to mitigate the risks.

102

The consolidated EaR policy limit for Enbridge is 5% of its forward 12 month forecast normalized 
earnings. EaR incorporates a Monte Carlo simulation, a 97.5 percent confidence level, a risk 
measurement horizon of one year (forward looking), a holding period of one month, and includes financial 
derivative instruments, other financial instruments, commodity derivative instruments, other commodity 
and executory contracts, positions and earnings or cash flows from anticipated transactions. EaR at 
December 31, 2017 and 2016 is 1.7% and 2.8% or $68 million and $59 million, respectively.

Effective January 1, 2018, the Board of Directors approved to change the market risk metric to Cash-
Flows-at-Risk (CFaR) and the consolidated CFaR limit will be 3.5% of forward 12 month normalized cash 
flow. The policy change will align the market risk metric with other key results metrics in the organization.

LIQUIDITY RISK 
Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments 
and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 
12 month rolling time period to determine whether sufficient funds will be available and maintain 
substantial capacity under our committed bank lines of credit to address any contingencies. Our primary 
sources of liquidity and capital resources are funds generated from operations, the issuance of 
commercial paper and draws under committed credit facilities and long-term debt, which includes 
debentures and medium-term notes. We also maintain current shelf prospectuses with securities 
regulators which enables, subject to market conditions, ready access to either the Canadian or United 
States public capital markets. In addition, we maintain sufficient liquidity through committed credit facilities 
with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated 
requirements for approximately one year without accessing the capital markets. We are in compliance 
with all the terms and conditions of our committed credit facility agreements and term debt indentures as 
at December 31, 2017. As a result, all credit facilities are available to us and the banks are obligated to 
fund and have been funding us under the terms of the facilities. 

CREDIT RISK 
Entering into derivative instruments may result in exposure to credit risk from the possibility that a 
counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk 
management transactions primarily with institutions that possess investment grade credit ratings. Credit 
risk relating to derivative counterparties is mitigated by credit exposure limits and contractual 
requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using 
external credit rating services and other analytical tools.

We generally have a policy of entering into individual International Swaps and Derivatives 
Association, Inc. agreements or other similar derivative agreements with the majority of our financial 
derivative counterparties. These agreements provide for the net settlement of derivative instruments 
outstanding with specific counterparties in the event of bankruptcy or other significant credit events, and 
reduces our credit risk exposure on financial derivative asset positions outstanding with the 
counterparties in these particular circumstances.

Credit risk also arises from trade and other long-term receivables, and is mitigated through credit 
exposure limits and contractual requirements, assessment of credit ratings and netting arrangements. 
Within EGD and Union Gas, credit risk is mitigated by the utilities' large and diversified customer base 
and the ability to recover an estimate for doubtful accounts through the ratemaking process. We actively 
monitor the financial strength of large industrial customers and, in select cases, have obtained additional 
security to minimize the risk of default on receivables. Generally, we classify and provide for receivables 
older than 20 days as past due. The maximum exposure to credit risk related to non-derivative financial 
assets is their carrying value.

103

 
 
 
 
 
FAIR VALUE MEASUREMENTS
The most observable inputs available are used to estimate the fair value of its derivatives. When possible, 
we estimate the fair value of our derivatives based on quoted market prices from exchanges. If quoted 
market prices are not available, we use estimates from third party brokers. For non-exchange traded 
derivatives classified in Levels 2 and 3, we use standard valuation techniques to calculate the estimated 
fair value. These methods include discounted cash flows for forwards and swaps and Black-Scholes-
Merton pricing models for options. Depending on the type of derivative and nature of the underlying risk, 
we use observable market prices (interest rates, foreign exchange rates, commodity prices and share 
prices, as applicable) and volatility as primary inputs to these valuation techniques. Finally, we consider 
our own credit default swap spread, as well as the credit default swap spreads associated with our 
counterparties, in our estimation of fair value.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Report of Independent Registered Public Accounting Firm

To the Shareholders and Directors of Enbridge Inc. 

Opinions on the consolidated financial statements and internal control over financial reporting

We have audited the accompanying consolidated statements of financial position of Enbridge Inc. and its 

subsidiaries (the “Company”) as of December 31, 2017 and December 31, 2016, and the related 

consolidated statements of earnings, comprehensive income, changes in equity and cash flows for each 

of the three years in the period ended December 31, 2017, including the related notes (collectively 

referred to as the “consolidated financial statements”). We also have audited the Company's internal 

control over financial reporting as of December 31, 2017, based on criteria established in Internal Control 

- Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway 

Commission (COSO). 

In our opinion, the consolidated financial statements referred to above present fairly, in all material 

respects, the consolidated financial position of the Company as of December 31, 2017 and December 31, 

2016, and the results of their operations and their cash flows for each of the three years in the period 

ended December 31, 2017 in conformity with accounting principles generally accepted in the United 

States of America. Also in our opinion, the Company maintained, in all material respects, effective internal 

control over financial reporting as of December 31, 2017, based on criteria established in Internal Control 

- Integrated Framework (2013) issued by the COSO.

Basis for opinions

The Company’s management is responsible for these consolidated financial statements, for maintaining 

effective internal control over financial reporting, and for its assessment of the effectiveness of internal 

control over financial reporting, included in the Management’s Annual Report on Internal Control over 

Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s 

consolidated financial statements and on the Company’s internal control over financial reporting based on 

our audits. We are a public accounting firm registered with the Public Company Accounting Oversight 

Board (United States) (PCAOB) and are required to be independent with respect to the Company in 

accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities 

and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that 

we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial 

statements are free of material misstatement, whether due to error or fraud, and whether effective internal 

control over financial reporting was maintained in all material respects. 

Our audits of the consolidated financial statements included performing procedures to assess the risks of 

material misstatement of the consolidated financial statements, whether due to error or fraud, and 

performing procedures that respond to those risks. Such procedures included examining, on a test basis, 

evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also 

included evaluating the accounting principles used and significant estimates made by management, as 

well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal 

control over financial reporting included obtaining an understanding of internal control over financial 

reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and 

operating effectiveness of internal control based on the assessed risk. Our audits also included 

performing such other procedures as we considered necessary in the circumstances. We believe that our 

audits provide a reasonable basis for our opinions.

104

105

FAIR VALUE MEASUREMENTS

The most observable inputs available are used to estimate the fair value of its derivatives. When possible, 

we estimate the fair value of our derivatives based on quoted market prices from exchanges. If quoted 

market prices are not available, we use estimates from third party brokers. For non-exchange traded 

derivatives classified in Levels 2 and 3, we use standard valuation techniques to calculate the estimated 

fair value. These methods include discounted cash flows for forwards and swaps and Black-Scholes-

Merton pricing models for options. Depending on the type of derivative and nature of the underlying risk, 

we use observable market prices (interest rates, foreign exchange rates, commodity prices and share 

prices, as applicable) and volatility as primary inputs to these valuation techniques. Finally, we consider 

our own credit default swap spread, as well as the credit default swap spreads associated with our 

counterparties, in our estimation of fair value.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Report of Independent Registered Public Accounting Firm

To the Shareholders and Directors of Enbridge Inc. 

Opinions on the consolidated financial statements and internal control over financial reporting

We have audited the accompanying consolidated statements of financial position of Enbridge Inc. and its 
subsidiaries (the “Company”) as of December 31, 2017 and December 31, 2016, and the related 
consolidated statements of earnings, comprehensive income, changes in equity and cash flows for each 
of the three years in the period ended December 31, 2017, including the related notes (collectively 
referred to as the “consolidated financial statements”). We also have audited the Company's internal 
control over financial reporting as of December 31, 2017, based on criteria established in Internal Control 
- Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway 
Commission (COSO). 

In our opinion, the consolidated financial statements referred to above present fairly, in all material 
respects, the consolidated financial position of the Company as of December 31, 2017 and December 31, 
2016, and the results of their operations and their cash flows for each of the three years in the period 
ended December 31, 2017 in conformity with accounting principles generally accepted in the United 
States of America. Also in our opinion, the Company maintained, in all material respects, effective internal 
control over financial reporting as of December 31, 2017, based on criteria established in Internal Control 
- Integrated Framework (2013) issued by the COSO.

Basis for opinions

The Company’s management is responsible for these consolidated financial statements, for maintaining 
effective internal control over financial reporting, and for its assessment of the effectiveness of internal 
control over financial reporting, included in the Management’s Annual Report on Internal Control over 
Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s 
consolidated financial statements and on the Company’s internal control over financial reporting based on 
our audits. We are a public accounting firm registered with the Public Company Accounting Oversight 
Board (United States) (PCAOB) and are required to be independent with respect to the Company in 
accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities 
and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that 
we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial 
statements are free of material misstatement, whether due to error or fraud, and whether effective internal 
control over financial reporting was maintained in all material respects. 

Our audits of the consolidated financial statements included performing procedures to assess the risks of 
material misstatement of the consolidated financial statements, whether due to error or fraud, and 
performing procedures that respond to those risks. Such procedures included examining, on a test basis, 
evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also 
included evaluating the accounting principles used and significant estimates made by management, as 
well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal 
control over financial reporting included obtaining an understanding of internal control over financial 
reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and 
operating effectiveness of internal control based on the assessed risk. Our audits also included 
performing such other procedures as we considered necessary in the circumstances. We believe that our 
audits provide a reasonable basis for our opinions.

104

105

Definition and limitations of internal control over financial reporting

A Company’s internal control over financial reporting is a process designed to provide reasonable 
assurance regarding the reliability of financial reporting and the preparation of consolidated financial 
statements for external purposes in accordance with generally accepted accounting principles. A 
Company’s internal control over financial reporting includes those policies and procedures that (i) pertain 
to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are 
recorded as necessary to permit preparation of consolidated financial statements in accordance with 
generally accepted accounting principles, and that receipts and expenditures of the Company are being 
made only in accordance with authorizations of management and directors of the Company; and 
(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, 
use, or disposition of the Company’s assets that could have a material effect on the consolidated financial 
statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect 
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk 
that controls may become inadequate because of changes in conditions, or that the degree of compliance 
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Chartered Professional Accountants
Calgary, Alberta
February 16, 2018 

We have served as the Company’s auditor since 1949. 

CONSOLIDATED STATEMENTS OF EARNINGS

ENBRIDGE INC.

Year ended December 31,

(millions of Canadian dollars, except per share amounts)

2017

2016

2015

Impairment of long-lived assets (Note 7 and Note 10)

Impairment of goodwill (Note 7 and Note 15)

Operating revenues

Commodity sales

Gas distribution sales

Transportation and other services

Total operating revenues

Operating expenses

Commodity costs

Gas distribution costs

Operating and administrative

Depreciation and amortization

Total operating expenses

Operating income

Income from equity investments (Note 12)

Other income/(expense)

Net foreign currency gain/(loss)

Gain on dispositions

Other

Interest expense (Note 17)

Earnings before income taxes

Income tax recovery/(expense) (Note 24)

Earnings/(loss)

(Earnings)/loss attributable to noncontrolling interests and

redeemable noncontrolling interests

Earnings attributable to controlling interests

Preference share dividends

Earnings/(loss) attributable to common shareholders

Earnings/(loss) per common share attributable to common 

shareholders (Note 5)

shareholders (Note 5)

Diluted earnings/(loss) per common share attributable to common 

The accompanying notes are an integral part of these consolidated financial statements.

26,065

22,409

22,949

26,286

4,215

13,877

44,378

2,572

6,442

3,163

4,463

102

42,807

1,571

1,102

237

16

199

(2,556)

569

2,697

3,266

(407)

2,859

(330)

2,529

1.66

1.65

22,816

2,486

9,258

34,560

1,596

4,358

2,240

1,376

—

31,979

2,581

428

91

848

93

(1,590)

2,451

(142)

2,309

(240)

2,069

(293)

1,776

1.95

1.93

23,842

3,096

6,856

33,794

2,292

4,131

2,024

96

440

31,932

1,862

475

(884)

94

88

11

(1,624)

(170)

(159)

410

251

(288)

(37)

(0.04)

(0.04)

106

107

 
Definition and limitations of internal control over financial reporting

A Company’s internal control over financial reporting is a process designed to provide reasonable 

assurance regarding the reliability of financial reporting and the preparation of consolidated financial 

statements for external purposes in accordance with generally accepted accounting principles. A 

Company’s internal control over financial reporting includes those policies and procedures that (i) pertain 

to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 

dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are 

recorded as necessary to permit preparation of consolidated financial statements in accordance with 

generally accepted accounting principles, and that receipts and expenditures of the Company are being 

made only in accordance with authorizations of management and directors of the Company; and 

(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, 

use, or disposition of the Company’s assets that could have a material effect on the consolidated financial 

statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect 

misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk 

that controls may become inadequate because of changes in conditions, or that the degree of compliance 

with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Chartered Professional Accountants

Calgary, Alberta

February 16, 2018 

We have served as the Company’s auditor since 1949. 

ENBRIDGE INC.
CONSOLIDATED STATEMENTS OF EARNINGS

Year ended December 31,
(millions of Canadian dollars, except per share amounts)
Operating revenues
Commodity sales
Gas distribution sales
Transportation and other services
Total operating revenues

Operating expenses
Commodity costs
Gas distribution costs
Operating and administrative
Depreciation and amortization
Impairment of long-lived assets (Note 7 and Note 10)
Impairment of goodwill (Note 7 and Note 15)
Total operating expenses

Operating income
Income from equity investments (Note 12)
Other income/(expense)

Net foreign currency gain/(loss)
Gain on dispositions
Other

Interest expense (Note 17)
Earnings before income taxes
Income tax recovery/(expense) (Note 24)
Earnings/(loss)
(Earnings)/loss attributable to noncontrolling interests and

redeemable noncontrolling interests

Earnings attributable to controlling interests
Preference share dividends
Earnings/(loss) attributable to common shareholders
Earnings/(loss) per common share attributable to common 

shareholders (Note 5)

Diluted earnings/(loss) per common share attributable to common 

shareholders (Note 5)

The accompanying notes are an integral part of these consolidated financial statements.

2017

2016

2015

26,286
4,215
13,877
44,378

26,065
2,572
6,442
3,163
4,463
102
42,807
1,571
1,102

237
16
199
(2,556)
569
2,697
3,266

(407)
2,859
(330)
2,529

1.66

1.65

22,816
2,486
9,258
34,560

22,409
1,596
4,358
2,240
1,376
—
31,979
2,581
428

91
848
93
(1,590)
2,451
(142)
2,309

(240)
2,069
(293)
1,776

1.95

1.93

23,842
3,096
6,856
33,794

22,949
2,292
4,131
2,024
96
440
31,932
1,862
475

(884)
94
88
(1,624)
11
(170)
(159)

410
251
(288)
(37)

(0.04)

(0.04)

106

107

 
ENBRIDGE INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

Year ended December 31,
(millions of Canadian dollars)
Earnings/(loss)
Other comprehensive income/(loss), net of tax

Change in unrealized gain/(loss) on cash flow hedges
Change in unrealized gain/(loss) on net investment hedges
Other comprehensive income/(loss) from equity investees
Reclassification to earnings of (gain)/loss on cash flow hedges
Reclassification to earnings of pension and other postretirement

benefits amounts

Actuarial gain/(loss) on pension plans and other postretirement

benefits

Foreign currency translation adjustments
Other comprehensive income/(loss), net of tax
Comprehensive income
Comprehensive (income)/loss attributable to noncontrolling interests

and redeemable noncontrolling interests

Comprehensive income attributable to controlling interests
Preference share dividends
Comprehensive income/(loss) attributable to common shareholders

The accompanying notes are an integral part of these consolidated financial statements.

2017

2016

2015

3,266

2,309

(21)
490
(27)
313

19

8
(3,060)
(2,278)
988

(160)
828
(330)
498

(138)
166
—
116

17

(34)
(712)
(585)
1,724

(229)
1,495
(293)
1,202

(159)

198
(903)
30
(559)

21

51
3,347
2,185
2,026

292
2,318
(288)
2,030

108

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

ENBRIDGE INC.

2017

2016

2015

Year ended December 31,

(millions of Canadian dollars, except per share amounts)

Preference shares (Note 20)

Balance at beginning of year

Preference shares issued

Balance at end of year

Common shares (Note 20)

Balance at beginning of year

Common shares issued

Common shares issued in Merger Transaction (Note 7)

Dividend Reinvestment and Share Purchase Plan

Shares issued on exercise of stock options

Balance at end of year

Additional paid-in capital

Balance at beginning of year

Stock-based compensation

(Note 7)

Options exercised

Enbridge Energy Company Inc. common control transaction

Drop down of interest to Enbridge Energy Partners, L.P. (Note 19)

Dilution gain/(loss) and other (Note 19)

Balance at end of year

Retained earnings/(deficit)

Balance at beginning of year

Earnings attributable to controlling interests

Preference share dividends

Common share dividends declared

Dividends paid to reciprocal shareholder

Fair value of outstanding earned stock-based compensation from Merger Transaction  

Reversal of cumulative redemption value adjustment attributable to Enbridge 

Commercial Trust (Note 19)

Redemption value adjustment attributable to redeemable noncontrolling interests    

Adjustment for the recognition of unutilized tax deductions for stock based compensation

(Note 19)

expense

Other

Balance at end of year

Adjustment relating to equity method investment

Accumulated other comprehensive income/(loss) (Note 22)

Balance at beginning of year

Other comprehensive income/(loss) attributable to common shareholders, net of tax

Balance at end of year

Reciprocal shareholding

Balance at beginning of year (Note 12)

Issuance of treasury stock

Balance at end of year (Note 12)

Total Enbridge Inc. shareholders’ equity

Noncontrolling interests (Note 19)

Balance at beginning of year

Earnings/(loss) attributable to noncontrolling interests

Other comprehensive income/(loss) attributable to noncontrolling interests, net of tax

Change in unrealized gain on cash flow hedges

Foreign currency translation adjustments

Reclassification to earnings of (gain)/loss on cash flow hedges

Comprehensive income/(loss) attributable to noncontrolling interests

Noncontrolling interests resulting from Merger Transaction (Note 7)

Enbridge Energy Company, Inc. common control transaction

Distributions

Contributions

Deconsolidation of Sabal Trail Transmission, LLC

Drop down of interest to Enbridge Energy Partners, L.P.

Dilution gain/(loss)

Disposition of Olympic Pipeline

Other

Balance at end of year

Total equity

Dividends paid per common share

 The accompanying notes are an integral part of these consolidated financial statements.

109

7,255

492

7,747

10,492

1,500

37,429

1,226

90

50,737

3,399

82

77

(95)

76

—

(345)

3,194

(716)

2,859

(330)

(4,702)

30

—

292

41

—

58

(2,468)

1,058

(2,031)

(973)

(102)

—

(102)

58,135

577

232

15

(431)

139

(277)

(45)

8,955

(343)

(839)

832

(2,318)

—

832

(24)

(30)

7,597

65,732

2.41

3,399

3,301

6,515

740

7,255

7,391

2,241

—

795

65

10,492

3,301

(24)

41

—

—

—

81

142

2,069

(293)

(1,945)

26

—

(686)

—

(29)

—

(716)

1,632

(574)

1,058

(83)

(19)

(102)

1,300

(28)

4

(44)

(28)

40

—

—

—

28

—

—

—

—

(720)

(3)

577

21,963

2.12

6,515

—

6,515

6,669

—

—

646

76

7,391

2,549

35

—

(19)

—

218

518

1,571

251

(288)

(1,596)

22

541

(359)

—

—

—

142

(435)

2,067

1,632

(83)

—

(83)

2,015

(407)

161

273

(319)

115

(292)

—

—

(680)

615

—

(304)

(53)

—

(1)

1,300

20,198

1.86

21,386

18,898

 
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

ENBRIDGE INC.

Year ended December 31,

(millions of Canadian dollars)

Earnings/(loss)

2017

2016

2015

3,266

2,309

Other comprehensive income/(loss), net of tax

Change in unrealized gain/(loss) on cash flow hedges

Change in unrealized gain/(loss) on net investment hedges

Other comprehensive income/(loss) from equity investees

Reclassification to earnings of (gain)/loss on cash flow hedges

Reclassification to earnings of pension and other postretirement

Actuarial gain/(loss) on pension plans and other postretirement

benefits amounts

benefits

Foreign currency translation adjustments

Other comprehensive income/(loss), net of tax

Comprehensive income

Comprehensive (income)/loss attributable to noncontrolling interests

and redeemable noncontrolling interests

Comprehensive income attributable to controlling interests

Preference share dividends

Comprehensive income/(loss) attributable to common shareholders

The accompanying notes are an integral part of these consolidated financial statements.

(21)

490

(27)

313

19

8

(3,060)

(2,278)

988

(160)

828

(330)

498

(138)

166

—

116

17

(34)

(712)

(585)

1,724

(229)

1,495

(293)

1,202

(159)

198

(903)

30

(559)

21

51

3,347

2,185

2,026

292

2,318

(288)

2,030

108

ENBRIDGE INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

Year ended December 31,
(millions of Canadian dollars, except per share amounts)
Preference shares (Note 20)

Balance at beginning of year
Preference shares issued

Balance at end of year
Common shares (Note 20)

Balance at beginning of year
Common shares issued
Common shares issued in Merger Transaction (Note 7)
Dividend Reinvestment and Share Purchase Plan
Shares issued on exercise of stock options

Balance at end of year
Additional paid-in capital

Balance at beginning of year
Stock-based compensation
Fair value of outstanding earned stock-based compensation from Merger Transaction  

(Note 7)

Options exercised
Enbridge Energy Company Inc. common control transaction
Drop down of interest to Enbridge Energy Partners, L.P. (Note 19)
Dilution gain/(loss) and other (Note 19)

Balance at end of year
Retained earnings/(deficit)

Balance at beginning of year
Earnings attributable to controlling interests
Preference share dividends
Common share dividends declared
Dividends paid to reciprocal shareholder
Reversal of cumulative redemption value adjustment attributable to Enbridge 

Commercial Trust (Note 19)

Redemption value adjustment attributable to redeemable noncontrolling interests    

(Note 19)

Adjustment for the recognition of unutilized tax deductions for stock based compensation

expense

Adjustment relating to equity method investment
Other

Balance at end of year
Accumulated other comprehensive income/(loss) (Note 22)

Balance at beginning of year
Other comprehensive income/(loss) attributable to common shareholders, net of tax

Balance at end of year
Reciprocal shareholding

Balance at beginning of year (Note 12)
Issuance of treasury stock
Balance at end of year (Note 12)
Total Enbridge Inc. shareholders’ equity
Noncontrolling interests (Note 19)
Balance at beginning of year
Earnings/(loss) attributable to noncontrolling interests
Other comprehensive income/(loss) attributable to noncontrolling interests, net of tax

Change in unrealized gain on cash flow hedges
Foreign currency translation adjustments
Reclassification to earnings of (gain)/loss on cash flow hedges

Comprehensive income/(loss) attributable to noncontrolling interests
Noncontrolling interests resulting from Merger Transaction (Note 7)
Enbridge Energy Company, Inc. common control transaction
Distributions
Contributions
Deconsolidation of Sabal Trail Transmission, LLC
Drop down of interest to Enbridge Energy Partners, L.P.
Dilution gain/(loss)
Disposition of Olympic Pipeline
Other

Balance at end of year
Total equity
Dividends paid per common share
 The accompanying notes are an integral part of these consolidated financial statements.

109

2017

2016

2015

7,255
492
7,747

10,492
1,500
37,429
1,226
90
50,737

3,399
82

77

(95)
76
—
(345)
3,194

(716)
2,859
(330)
(4,702)
30

—

292

41

—
58
(2,468)

1,058
(2,031)
(973)

(102)
—
(102)
58,135

577
232

15
(431)
139
(277)
(45)
8,955
(343)
(839)
832
(2,318)
—
832
(24)
(30)
7,597
65,732
2.41

6,515
740
7,255

7,391
2,241
—
795
65
10,492

3,301
41

—

(24)
—
—
81
3,399

142
2,069
(293)
(1,945)
26

—

(686)

—

(29)
—
(716)

1,632
(574)
1,058

(83)
(19)
(102)
21,386

1,300
(28)

4
(44)
40
—
(28)
—
—
(720)
28
—
—
—
—
(3)
577
21,963
2.12

6,515
—
6,515

6,669
—
—
646
76
7,391

2,549
35

—

(19)
—
218
518
3,301

1,571
251
(288)
(1,596)
22

541

(359)

—

—
—
142

(435)
2,067
1,632

(83)
—
(83)
18,898

2,015
(407)

161
273
(319)
115
(292)
—
—
(680)
615
—
(304)
(53)
—
(1)
1,300
20,198
1.86

 
ENBRIDGE INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS

Year ended December 31,
(millions of Canadian dollars)
Operating activities
Earnings/(loss)
Adjustments to reconcile earnings/(loss) to net cash provided by operating
activities:

Depreciation and amortization
Deferred income tax expense
Changes in unrealized (gain)/loss on derivative instruments, net (Note 23)
Earnings from equity investments
Distributions from equity investments
Impairment
(Gain)/loss on dispositions
Hedge ineffectiveness (Note 23)
Inventory revaluation allowance
Unrealized intercompany foreign exchange (gain)/loss
Other

Changes in environmental liabilities, net of recoveries
Changes in operating assets and liabilities (Note 26)

Net cash provided by operating activities
Investing activities

Capital expenditures
Joint venture financing
Long-term investments
Distributions from equity investments in excess of cumulative earnings
Restricted long-term investments
Additions to intangible assets
Purchases of held-to-maturity securities
Proceeds from sales and maturities of held-to-maturity securities
Purchase of available-for-sale securities
Proceeds from sales and maturities of available-for-sale securities
Acquisitions
Cash acquired in Merger Transaction (Note 7)
Proceeds from dispositions
Reimbursement of capital expenditures
Affiliate loans, net
Changes in restricted cash

Net cash used in investing activities
Financing activities

Net change in short-term borrowings (Note 2)
Net change in commercial paper and credit facility draws
Debenture and term note issues, net of issue costs
Debenture and term note repayments
Purchase of interest in consolidated subsidiary
Contributions from noncontrolling interests
Distributions to noncontrolling interests
Contributions from redeemable noncontrolling interests
Distributions to redeemable noncontrolling interests
Preference shares issued
Common shares issued
Preference share dividends
Common share dividends

Net cash provided by financing activities
Effect of translation of foreign denominated cash and cash equivalents
Net increase/(decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Supplementary cash flow information

Cash paid for income taxes
Cash paid for interest, net of amount capitalized
Property, plant and equipment non-cash accruals

The accompanying notes are an integral part of these consolidated financial statements.

110

2017

2016

2015

3,266

2,309

(159)

3,163
(2,877)
(1,242)
(1,102)
1,264
4,565
(120)
(55)
56
28
50
(98)
(314)
6,584

(8,287)
(25)
(3,525)
125
(54)
(789)
(529)
584
(136)
99
—
682
628
212
(22)
35
(11,002)

721
(1,249)
9,483
(5,054)
(227)
832
(919)
1,178
(247)
489
1,549
(330)
(2,750)
3,476
(72)
(1,014)
1,494
480

172
2,668
889

2,240
43
(509)
(656)
827
1,620
(848)
61
245
43
198
(4)
(358)
5,211

(5,128)
(1)
(467)
—
(46)
(127)
—
—
—
—
(644)
—
1,379
—
(118)
(40)
(5,192)

(248)
(2,297)
4,080
(1,946)
—
28
(720)
591
(202)
737
2,260
(293)
(1,150)
840
(19)
840
654
1,494

194
1,820
773

2,024
7
2,373
(483)
727
536
(94)
(20)
410
(131)
69
(43)
(645)
4,571

(7,273)
—
(622)
—
(49)
(101)
—
—
—
—
(106)
—
146
—
59
13
(7,933)

(487)
1,507
3,767
(1,023)
—
615
(680)
670
(114)
—
57
(288)
(950)
3,074
143
(145)
799
654

80
1,835
1,222

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION

ENBRIDGE INC.

2017

2016

(millions of Canadian dollars; number of shares in millions)

December 31,

Assets

Current assets

Cash and cash equivalents (Note 2)

Restricted cash

Accounts receivable and other (Note 8)

Accounts receivable from affiliates

Inventory (Note 9)

Property, plant and equipment, net (Note 10)

Long-term investments (Note 12)

Restricted long-term investments (Note 13)

Deferred amounts and other assets 

Intangible assets, net (Note 14)

Goodwill (Note 15)

Deferred income taxes (Note 24)

Total assets

Liabilities and equity

Current liabilities

Short-term borrowings (Note 17)

Accounts payable and other (Note 16)

Accounts payable to affiliates

Interest payable

Environmental liabilities

Current portion of long-term debt (Note 17)

Long-term debt (Note 17)

Other long-term liabilities

Deferred income taxes (Note 24)

Commitments and contingencies (Note 28)

Redeemable noncontrolling interests (Note 19)

Equity

Share capital (Note 20)

Preference shares

Common shares (1,695 and 943 outstanding at December 31, 2017 and  

December 31, 2016, respectively)

Additional paid-in capital

Deficit

Reciprocal shareholding

Total Enbridge Inc. shareholders’ equity

Noncontrolling interests (Note 19)

Accumulated other comprehensive income/(loss) (Note 22)

Total liabilities and equity

Variable Interest Entities (Note 11)

The accompanying notes are an integral part of these consolidated financial statements.

111

480

107

7,053

47

1,528

9,215

90,711

16,644

267

6,442

3,267

34,457

1,090

162,093

1,444

9,478

157

634

40

2,871

14,624

60,865

7,510

9,295

92,294

4,067

7,747

50,737

3,194

(2,468)

(973)

(102)

58,135

7,597

65,732

162,093

1,494

4,978

68

14

1,233

7,787

64,284

6,836

90

3,391

1,573

78

1,170

85,209

351

7,295

122

333

142

4,100

12,343

36,494

4,981

6,036

59,854

3,392

7,255

10,492

3,399

(716)

1,058

(102)

21,386

577

21,963

85,209

 
 
 
 
 
 
 
 
 
 
 
 
CONSOLIDATED STATEMENTS OF CASH FLOWS

ENBRIDGE INC.

ENBRIDGE INC.
CONSOLIDATED STATEMENTS OF FINANCIAL POSITION

December 31,
(millions of Canadian dollars; number of shares in millions)
Assets
Current assets

Cash and cash equivalents (Note 2)
Restricted cash
Accounts receivable and other (Note 8)
Accounts receivable from affiliates
Inventory (Note 9)

Property, plant and equipment, net (Note 10)
Long-term investments (Note 12)
Restricted long-term investments (Note 13)
Deferred amounts and other assets 
Intangible assets, net (Note 14)
Goodwill (Note 15)
Deferred income taxes (Note 24)
Total assets

Liabilities and equity
Current liabilities

Short-term borrowings (Note 17)
Accounts payable and other (Note 16)
Accounts payable to affiliates
Interest payable
Environmental liabilities
Current portion of long-term debt (Note 17)

Long-term debt (Note 17)
Other long-term liabilities
Deferred income taxes (Note 24)

Commitments and contingencies (Note 28)
Redeemable noncontrolling interests (Note 19)
Equity

Share capital (Note 20)
Preference shares
Common shares (1,695 and 943 outstanding at December 31, 2017 and  

December 31, 2016, respectively)

Additional paid-in capital
Deficit
Accumulated other comprehensive income/(loss) (Note 22)
Reciprocal shareholding
Total Enbridge Inc. shareholders’ equity
Noncontrolling interests (Note 19)

Total liabilities and equity
Variable Interest Entities (Note 11)
The accompanying notes are an integral part of these consolidated financial statements.

111

2017

2016

480
107
7,053
47
1,528
9,215
90,711
16,644
267
6,442
3,267
34,457
1,090
162,093

1,444
9,478
157
634
40
2,871
14,624
60,865
7,510
9,295
92,294

4,067

7,747

50,737
3,194
(2,468)
(973)
(102)
58,135
7,597
65,732
162,093

1,494
68
4,978
14
1,233
7,787
64,284
6,836
90
3,391
1,573
78
1,170
85,209

351
7,295
122
333
142
4,100
12,343
36,494
4,981
6,036
59,854

3,392

7,255

10,492
3,399
(716)
1,058
(102)
21,386
577
21,963
85,209

Adjustments to reconcile earnings/(loss) to net cash provided by operating

Changes in unrealized (gain)/loss on derivative instruments, net (Note 23)

Year ended December 31,

(millions of Canadian dollars)

Operating activities

Earnings/(loss)

activities:

Depreciation and amortization

Deferred income tax expense

Earnings from equity investments

Distributions from equity investments

Impairment

(Gain)/loss on dispositions

Hedge ineffectiveness (Note 23)

Inventory revaluation allowance

Unrealized intercompany foreign exchange (gain)/loss

Other

Changes in environmental liabilities, net of recoveries

Changes in operating assets and liabilities (Note 26)

Net cash provided by operating activities

Investing activities

Capital expenditures

Joint venture financing

Long-term investments

Distributions from equity investments in excess of cumulative earnings

Restricted long-term investments

Additions to intangible assets

Purchases of held-to-maturity securities

Proceeds from sales and maturities of held-to-maturity securities

Purchase of available-for-sale securities

Proceeds from sales and maturities of available-for-sale securities

Acquisitions

Cash acquired in Merger Transaction (Note 7)

Proceeds from dispositions

Reimbursement of capital expenditures

Affiliate loans, net

Changes in restricted cash

Net cash used in investing activities

Financing activities

Net change in short-term borrowings (Note 2)

Net change in commercial paper and credit facility draws

Debenture and term note issues, net of issue costs

Debenture and term note repayments

Purchase of interest in consolidated subsidiary

Contributions from noncontrolling interests

Distributions to noncontrolling interests

Contributions from redeemable noncontrolling interests

Distributions to redeemable noncontrolling interests

Preference shares issued

Common shares issued

Preference share dividends

Common share dividends

Net cash provided by financing activities

Effect of translation of foreign denominated cash and cash equivalents

Net increase/(decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of year

Cash and cash equivalents at end of year

Supplementary cash flow information

Cash paid for income taxes

Cash paid for interest, net of amount capitalized

Property, plant and equipment non-cash accruals

The accompanying notes are an integral part of these consolidated financial statements.

110

2017

2016

2015

3,266

2,309

(159)

3,163

(2,877)

(1,242)

(1,102)

1,264

4,565

(120)

(55)

56

28

50

(98)

(314)

6,584

(8,287)

(25)

(3,525)

125

(54)

(789)

(529)

584

(136)

99

—

682

628

212

(22)

35

721

(1,249)

9,483

(5,054)

(227)

832

(919)

1,178

(247)

489

1,549

(330)

(2,750)

3,476

(72)

(1,014)

1,494

480

172

2,668

889

(11,002)

(5,128)

(7,273)

2,240

43

(509)

(656)

827

1,620

(848)

61

245

43

198

(4)

(358)

5,211

(1)

(467)

—

(46)

(127)

—

—

—

—

—

—

(644)

1,379

(118)

(40)

(5,192)

(248)

(2,297)

4,080

(1,946)

—

28

(720)

591

(202)

737

2,260

(293)

(1,150)

840

(19)

840

654

1,494

194

1,820

773

2,024

7

2,373

(483)

727

536

(94)

(20)

410

(131)

69

(43)

(645)

4,571

(622)

—

—

(49)

(101)

—

—

—

—

(106)

—

146

—

59

13

(7,933)

(487)

1,507

3,767

(1,023)

—

615

(680)

670

(114)

—

57

(288)

(950)

3,074

143

(145)

799

654

80

1,835

1,222

 
 
 
 
 
 
 
 
 
 
 
 
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
INDEX

1.  BUSINESS OVERVIEW 

1. Business Overview

2. Significant Accounting Policies

3. Changes in Accounting Policies

4. Segmented Information

5. Earnings per Common Share

6. Regulatory Matters

7. Acquisitions and Dispositions

8. Accounts Receivable and Other

9.

Inventory

10. Property, Plant and Equipment

11. Variable Interest Entities

12. Long-Term Investments

13. Restricted Long-Term Investments

14.

Intangible Assets

15. Goodwill

16. Accounts Payable and Other

17. Debt

18. Asset Retirement Obligations

19. Noncontrolling Interests

20. Share Capital

21. Stock Option and Stock Unit Plans

22. Components of Accumulated Other Comprehensive Income/(Loss) 

23. Risk Management and Financial Instruments

24.

Income Taxes

25. Pension and Other Postretirement Benefits

26. Changes in Operating Assets and Liabilities

27. Related Party Transactions

28. Commitments and Contingencies

29. Guarantees

30. Subsequent Events

31. Quarterly Financial Data

Page
113

114

123

128

130

130

133

139

139

139

140

145

147

148

149

150

151

155
156

159

162

164

166

178

181

188

189
190

192

194

194

The terms “we,” “our,” “us” and “Enbridge” as used in this report refer collectively to Enbridge Inc. and its 

subsidiaries unless the context suggests otherwise. These terms are used for convenience only and are 

not intended as a precise description of any separate legal entity within Enbridge Inc.

Enbridge is a publicly traded energy transportation and distribution company. We conduct our business 

through five business segments: Liquids Pipelines; Gas Transmission and Midstream; Gas Distribution; 

Green Power and Transmission; and Energy Services. These reporting segments are strategic business 

units established by senior management to facilitate the achievement of our long-term objectives, to aid in 

resource allocation decisions and to assess operational performance.

LIQUIDS PIPELINES

Liquids Pipelines consists of common carrier and contract pipelines that transport crude oil, natural gas 

liquids (NGL) and refined products and terminals in Canada and the United States, including Canadian 

Mainline, Lakehead Pipeline System (Lakehead System), Regional Oil Sands System, Mid-Continent and 

Gulf Coast, Southern Lights Pipeline, Express-Platte System, Bakken System, and Feeder Pipelines and 

Other. 

GAS TRANSMISSION AND MIDSTREAM

Gas Transmission and Midstream, formerly referred to as Gas Pipelines and Processing, consists of 

investments in natural gas pipelines and gathering and processing facilities. Investments in natural gas 

pipelines include our interests in US Gas Transmission, Canadian Gas Transmission and Midstream, 

Alliance Pipeline, US Midstream and Other. Investments in natural gas processing include our interest in 

Aux Sable, a natural gas extraction and fractionation business located near the terminus of the Alliance 

Pipeline; Canadian Gas Transmission and Midstream assets located in northeast British Columbia and 

northwest Alberta; and DCP Midstream, LLC (DCP Midstream) assets located primarily in Texas and 

Oklahoma. 

GAS DISTRIBUTION

Gas Distribution consists of our natural gas utility operations, the core of which are Enbridge Gas 

Distribution Inc. (EGD) and Union Gas Limited (Union Gas), which serves residential, commercial and 

industrial customers, primarily located in Ontario. This business segment also includes our investment in 

Noverco Inc. (Noverco) and Other Gas Distribution and Storage. 

GREEN POWER AND TRANSMISSION

Green Power and Transmission consists of our investments in renewable energy assets and transmission 

facilities. Renewable energy assets consist of wind, solar, geothermal and waste heat recovery facilities 

and are located in Canada primarily in the provinces of Alberta, Ontario and Quebec and in the United 

States primarily in Colorado, Texas, Indiana and West Virginia. We also have assets under development 

The Energy Services businesses in Canada and the United States undertake physical commodity 

marketing activity and logistical services, oversee refinery supply services and manage our volume 

located in Europe. 

ENERGY SERVICES

commitments on various pipeline systems. 

ELIMINATIONS AND OTHER

In addition to the segments noted above, Eliminations and Other includes operating and administrative 

costs and foreign exchange costs which are not allocated to business segments. Also included in 

Eliminations and Other are new business development activities, general corporate investments and 

elimination of transactions between segments required to present financial performance and financial 

position on a consolidated basis. 

112

113

 
 
 
 
 
 
 
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

1.  BUSINESS OVERVIEW 

INDEX

1. Business Overview

2. Significant Accounting Policies

3. Changes in Accounting Policies

4. Segmented Information

5. Earnings per Common Share

6. Regulatory Matters

7. Acquisitions and Dispositions

8. Accounts Receivable and Other

9.

Inventory

10. Property, Plant and Equipment

11. Variable Interest Entities

12. Long-Term Investments

13. Restricted Long-Term Investments

14.

Intangible Assets

15. Goodwill

16. Accounts Payable and Other

17. Debt

18. Asset Retirement Obligations

19. Noncontrolling Interests

20. Share Capital

21. Stock Option and Stock Unit Plans

22. Components of Accumulated Other Comprehensive Income/(Loss) 

23. Risk Management and Financial Instruments

24.

Income Taxes

25. Pension and Other Postretirement Benefits

26. Changes in Operating Assets and Liabilities

27. Related Party Transactions

28. Commitments and Contingencies

29. Guarantees

30. Subsequent Events

31. Quarterly Financial Data

Page

113

114

123

128

130

130

133

139

139

139

140

145

147

148

149

150

151

155

156

159

162

164

166

178

181

188

189

190

192

194

194

The terms “we,” “our,” “us” and “Enbridge” as used in this report refer collectively to Enbridge Inc. and its 
subsidiaries unless the context suggests otherwise. These terms are used for convenience only and are 
not intended as a precise description of any separate legal entity within Enbridge Inc.

Enbridge is a publicly traded energy transportation and distribution company. We conduct our business 
through five business segments: Liquids Pipelines; Gas Transmission and Midstream; Gas Distribution; 
Green Power and Transmission; and Energy Services. These reporting segments are strategic business 
units established by senior management to facilitate the achievement of our long-term objectives, to aid in 
resource allocation decisions and to assess operational performance.

LIQUIDS PIPELINES
Liquids Pipelines consists of common carrier and contract pipelines that transport crude oil, natural gas 
liquids (NGL) and refined products and terminals in Canada and the United States, including Canadian 
Mainline, Lakehead Pipeline System (Lakehead System), Regional Oil Sands System, Mid-Continent and 
Gulf Coast, Southern Lights Pipeline, Express-Platte System, Bakken System, and Feeder Pipelines and 
Other. 

GAS TRANSMISSION AND MIDSTREAM
Gas Transmission and Midstream, formerly referred to as Gas Pipelines and Processing, consists of 
investments in natural gas pipelines and gathering and processing facilities. Investments in natural gas 
pipelines include our interests in US Gas Transmission, Canadian Gas Transmission and Midstream, 
Alliance Pipeline, US Midstream and Other. Investments in natural gas processing include our interest in 
Aux Sable, a natural gas extraction and fractionation business located near the terminus of the Alliance 
Pipeline; Canadian Gas Transmission and Midstream assets located in northeast British Columbia and 
northwest Alberta; and DCP Midstream, LLC (DCP Midstream) assets located primarily in Texas and 
Oklahoma. 

GAS DISTRIBUTION
Gas Distribution consists of our natural gas utility operations, the core of which are Enbridge Gas 
Distribution Inc. (EGD) and Union Gas Limited (Union Gas), which serves residential, commercial and 
industrial customers, primarily located in Ontario. This business segment also includes our investment in 
Noverco Inc. (Noverco) and Other Gas Distribution and Storage. 

GREEN POWER AND TRANSMISSION
Green Power and Transmission consists of our investments in renewable energy assets and transmission 
facilities. Renewable energy assets consist of wind, solar, geothermal and waste heat recovery facilities 
and are located in Canada primarily in the provinces of Alberta, Ontario and Quebec and in the United 
States primarily in Colorado, Texas, Indiana and West Virginia. We also have assets under development 
located in Europe. 

ENERGY SERVICES
The Energy Services businesses in Canada and the United States undertake physical commodity 
marketing activity and logistical services, oversee refinery supply services and manage our volume 
commitments on various pipeline systems. 

ELIMINATIONS AND OTHER
In addition to the segments noted above, Eliminations and Other includes operating and administrative 
costs and foreign exchange costs which are not allocated to business segments. Also included in 
Eliminations and Other are new business development activities, general corporate investments and 
elimination of transactions between segments required to present financial performance and financial 
position on a consolidated basis. 

112

113

 
 
 
 
 
 
 
ACQUISITION OF SPECTRA ENERGY CORP 
On February 27, 2017, Enbridge and Spectra Energy Corp (Spectra Energy) combined in a stock-for-
stock merger transaction (the Merger Transaction) for a purchase price of $37.5 billion. Under the terms 
of the Merger Transaction, Spectra Energy shareholders received 0.984 shares of Enbridge for each 
share of Spectra Energy common stock that they owned, giving us 100% ownership of Spectra Energy. 
Please refer to Note 7 - Acquisitions and Dispositions for further discussion of the transaction.  

CANADIAN RESTRUCTURING PLAN
Effective September 1, 2015, under an agreement with Enbridge Income Fund (the Fund) and Enbridge 
Income Fund Holdings Inc. (ENF), Enbridge transferred its Canadian Liquids Pipelines business, held by 
Enbridge Pipelines Inc. (EPI) and Enbridge Pipelines (Athabasca) Inc. (EPAI), and certain Canadian 
renewable energy assets to the Fund Group (comprising the Fund, Enbridge Commercial Trust (ECT), 
Enbridge Income Partners LP (EIPLP) and the subsidiaries of EIPLP) for consideration valued at $30.4 
billion plus incentive distribution and performance rights (the Canadian Restructuring Plan). The 
consideration that we received included $18.7 billion of units in the Fund Group, comprised of $3 billion of 
Fund units and $15.7 billion of equity units of EIPLP, in which the Fund has an interest. The Fund Group 
also assumed debt of EPI and EPAI of approximately $11.7 billion.

2.  SIGNIFICANT ACCOUNTING POLICIES

These consolidated financial statements are prepared in accordance with generally accepted accounting 
principles in the United States of America (U.S. GAAP). Amounts are stated in Canadian dollars unless 
otherwise noted. As a Securities and Exchange Commission (SEC) registrant, we are permitted to use 
U.S. GAAP for purposes of meeting both our Canadian and United States continuous disclosure 
requirements.

BASIS OF PRESENTATION AND USE OF ESTIMATES
The preparation of financial statements in conformity with U.S. GAAP requires management to make 
estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, 
as well as the disclosure of contingent assets and liabilities in the consolidated financial statements. 
Significant estimates and assumptions used in the preparation of the consolidated financial statements 
include, but are not limited to: carrying values of regulatory assets and liabilities (Note 6); purchase price 
allocations (Note 7); unbilled revenues; depreciation rates and carrying value of property, plant and 
equipment (Note 10); amortization rates of intangible assets (Note 14); measurement of goodwill (Note 15); fair 
value of asset retirement obligations (ARO) (Note 18); valuation of stock-based compensation (Note 21); fair 
value of financial instruments (Note 23); provisions for income taxes (Note 24); assumptions used to measure 
retirement and other postretirement benefit obligations (OPEB) (Note 25); commitments and contingencies 
(Note 28); and estimates of losses related to environmental remediation obligations (Note 28). Actual results 
could differ from these estimates.

Effective September 30, 2017, we combined Cash and cash equivalents and amounts previously 
presented as Bank indebtedness where the corresponding bank accounts are subject to cash pooling 
arrangements. As at December 31, 2017, $0.6 billion (December 31, 2016 - $0.6 billion) of Bank 
indebtedness has been combined within Cash and cash equivalents in our Consolidated Statements of 
Financial Position. Net cash provided by financing activities in the Consolidated Statements of Cash 
Flows for the years ended December 31, 2016 and 2015 have decreased by $0.3 billion and increased by 
$0.1 billion, respectively, to reflect this change.

PRINCIPLES OF CONSOLIDATION
The consolidated financial statements include our accounts and accounts of our subsidiaries and variable 
interest entities (VIEs) for which we are the primary beneficiary. A VIE is a legal entity that does not have 
sufficient equity at risk to finance its activities without additional subordinated financial support or is 
structured such that equity investors lack the ability to make significant decisions relating to the entity’s 

operations through voting rights or do not substantively participate in the gains and losses of the entity. 

Upon inception of a contractual agreement, we perform an assessment to determine whether the 

arrangement contains a variable interest in a legal entity and whether that legal entity is a VIE. The 

primary beneficiary has both the power to direct the activities of the VIE that most significantly impact the 

entity’s economic performance and the obligation to absorb losses or the right to receive benefits from the 

VIE entity that could potentially be significant to the VIE. Where we conclude that we are the primary 

beneficiary of a VIE, we will consolidate the accounts of that VIE. We assess all variable interests in the 

entity and use our judgment when determining if we are the primary beneficiary. Other qualitative factors 

that are considered include decision-making responsibilities, the VIE capital structure, risk and rewards 

sharing, contractual agreements with the VIE, voting rights and level of involvement of other parties. We 

assess the primary beneficiary determination for a VIE on an ongoing basis, as there are changes in the 

facts and circumstances related to a VIE. The consolidated financial statements also include the accounts 

of any limited partnerships where we represent the general partner and, based on all facts and 

circumstances, control such limited partnerships, unless the limited partner has substantive participating 

rights or substantive kick-out rights. For certain investments where we retain an undivided interest in 

assets and liabilities, we record our proportionate share of assets, liabilities, revenues and expenses. If 

an entity is determined to not be a VIE, the voting interest entity model will be applied.

All significant intercompany accounts and transactions are eliminated upon consolidation. Ownership 

interests in subsidiaries represented by other parties that do not control the entity are presented in the 

consolidated financial statements as activities and balances attributable to noncontrolling interests and 

redeemable noncontrolling interests. Investments and entities over which we exercise significant 

influence are accounted for using the equity method.

As a result of the Canadian Restructuring Plan, ECT, our subsidiary, determines its equity investment 

earnings from EIPLP using the Hypothetical Liquidation at Book Value (HLBV) method. ECT applies the 

HLBV method to its equity method investments where cash distributions, including both preference and 

residual distributions, are not based on the investor’s ownership percentages. Under the HLBV method, a 

calculation is prepared at each balance sheet date to determine the amount that ECT would receive if 

EIPLP were to liquidate all of its assets, as valued in accordance with U.S. GAAP, and distribute that cash 

to the investors. The difference between the calculated liquidation distribution amounts at the beginning 

and the end of the reporting period, after adjusting for capital contributions and distributions, is ECT’s 

share of the earnings or losses from the equity investment for the period.

While ECT and EIPLP are both consolidated in these financial statements, the use of the HLBV method 

by ECT impacts the earnings attributable to redeemable noncontrolling interests reported on Enbridge’s 

Consolidated Statements of Earnings. We continue to recognize Redeemable noncontrolling interests on 

the Consolidated Statements of Financial Position at the maximum redemption value of the trust units 

held by third parties, which references the market price of ENF common shares.

REGULATION

Certain parts of our businesses are subject to regulation by various authorities including, but not limited 

to, the National Energy Board (NEB), the Federal Energy Regulatory Commission (FERC), the Alberta 

Energy Regulator, the New Brunswick Energy and Utilities Board (EUB), the Ontario Energy Board (OEB) 

and La Régie de l’Energie du Québec. Regulatory bodies exercise statutory authority over matters such 

as construction, rates and ratemaking and agreements with customers. To recognize the economic effects 

of the actions of the regulator, the timing of recognition of certain revenues and expenses in these 

operations may differ from that otherwise expected under U.S. GAAP for non rate-regulated entities.

Regulatory assets represent amounts that are expected to be recovered from customers in future periods 

through rates. Regulatory liabilities represent amounts that are expected to be refunded to customers in 

future periods through rates or expected to be paid to cover future abandonment costs in relation to the 

NEB’s Land Matters Consultation Initiative (LMCI). Long-term regulatory assets are recorded in Deferred 

amounts and other assets and current regulatory assets are recorded in Accounts receivable and other. 

114

115

 
 
 
 
 
 
 
ACQUISITION OF SPECTRA ENERGY CORP 

On February 27, 2017, Enbridge and Spectra Energy Corp (Spectra Energy) combined in a stock-for-

stock merger transaction (the Merger Transaction) for a purchase price of $37.5 billion. Under the terms 

of the Merger Transaction, Spectra Energy shareholders received 0.984 shares of Enbridge for each 

share of Spectra Energy common stock that they owned, giving us 100% ownership of Spectra Energy. 

Please refer to Note 7 - Acquisitions and Dispositions for further discussion of the transaction.  

CANADIAN RESTRUCTURING PLAN

Effective September 1, 2015, under an agreement with Enbridge Income Fund (the Fund) and Enbridge 

Income Fund Holdings Inc. (ENF), Enbridge transferred its Canadian Liquids Pipelines business, held by 

Enbridge Pipelines Inc. (EPI) and Enbridge Pipelines (Athabasca) Inc. (EPAI), and certain Canadian 

renewable energy assets to the Fund Group (comprising the Fund, Enbridge Commercial Trust (ECT), 

Enbridge Income Partners LP (EIPLP) and the subsidiaries of EIPLP) for consideration valued at $30.4 

billion plus incentive distribution and performance rights (the Canadian Restructuring Plan). The 

consideration that we received included $18.7 billion of units in the Fund Group, comprised of $3 billion of 

Fund units and $15.7 billion of equity units of EIPLP, in which the Fund has an interest. The Fund Group 

also assumed debt of EPI and EPAI of approximately $11.7 billion.

2.  SIGNIFICANT ACCOUNTING POLICIES

These consolidated financial statements are prepared in accordance with generally accepted accounting 

principles in the United States of America (U.S. GAAP). Amounts are stated in Canadian dollars unless 

otherwise noted. As a Securities and Exchange Commission (SEC) registrant, we are permitted to use 

U.S. GAAP for purposes of meeting both our Canadian and United States continuous disclosure 

requirements.

BASIS OF PRESENTATION AND USE OF ESTIMATES

The preparation of financial statements in conformity with U.S. GAAP requires management to make 

estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, 

as well as the disclosure of contingent assets and liabilities in the consolidated financial statements. 

Significant estimates and assumptions used in the preparation of the consolidated financial statements 

include, but are not limited to: carrying values of regulatory assets and liabilities (Note 6); purchase price 

allocations (Note 7); unbilled revenues; depreciation rates and carrying value of property, plant and 

equipment (Note 10); amortization rates of intangible assets (Note 14); measurement of goodwill (Note 15); fair 

value of asset retirement obligations (ARO) (Note 18); valuation of stock-based compensation (Note 21); fair 

value of financial instruments (Note 23); provisions for income taxes (Note 24); assumptions used to measure 

retirement and other postretirement benefit obligations (OPEB) (Note 25); commitments and contingencies 

(Note 28); and estimates of losses related to environmental remediation obligations (Note 28). Actual results 

could differ from these estimates.

Effective September 30, 2017, we combined Cash and cash equivalents and amounts previously 

presented as Bank indebtedness where the corresponding bank accounts are subject to cash pooling 

arrangements. As at December 31, 2017, $0.6 billion (December 31, 2016 - $0.6 billion) of Bank 

indebtedness has been combined within Cash and cash equivalents in our Consolidated Statements of 

Financial Position. Net cash provided by financing activities in the Consolidated Statements of Cash 

Flows for the years ended December 31, 2016 and 2015 have decreased by $0.3 billion and increased by 

$0.1 billion, respectively, to reflect this change.

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include our accounts and accounts of our subsidiaries and variable 

interest entities (VIEs) for which we are the primary beneficiary. A VIE is a legal entity that does not have 

sufficient equity at risk to finance its activities without additional subordinated financial support or is 

structured such that equity investors lack the ability to make significant decisions relating to the entity’s 

operations through voting rights or do not substantively participate in the gains and losses of the entity. 
Upon inception of a contractual agreement, we perform an assessment to determine whether the 
arrangement contains a variable interest in a legal entity and whether that legal entity is a VIE. The 
primary beneficiary has both the power to direct the activities of the VIE that most significantly impact the 
entity’s economic performance and the obligation to absorb losses or the right to receive benefits from the 
VIE entity that could potentially be significant to the VIE. Where we conclude that we are the primary 
beneficiary of a VIE, we will consolidate the accounts of that VIE. We assess all variable interests in the 
entity and use our judgment when determining if we are the primary beneficiary. Other qualitative factors 
that are considered include decision-making responsibilities, the VIE capital structure, risk and rewards 
sharing, contractual agreements with the VIE, voting rights and level of involvement of other parties. We 
assess the primary beneficiary determination for a VIE on an ongoing basis, as there are changes in the 
facts and circumstances related to a VIE. The consolidated financial statements also include the accounts 
of any limited partnerships where we represent the general partner and, based on all facts and 
circumstances, control such limited partnerships, unless the limited partner has substantive participating 
rights or substantive kick-out rights. For certain investments where we retain an undivided interest in 
assets and liabilities, we record our proportionate share of assets, liabilities, revenues and expenses. If 
an entity is determined to not be a VIE, the voting interest entity model will be applied.

All significant intercompany accounts and transactions are eliminated upon consolidation. Ownership 
interests in subsidiaries represented by other parties that do not control the entity are presented in the 
consolidated financial statements as activities and balances attributable to noncontrolling interests and 
redeemable noncontrolling interests. Investments and entities over which we exercise significant 
influence are accounted for using the equity method.

As a result of the Canadian Restructuring Plan, ECT, our subsidiary, determines its equity investment 
earnings from EIPLP using the Hypothetical Liquidation at Book Value (HLBV) method. ECT applies the 
HLBV method to its equity method investments where cash distributions, including both preference and 
residual distributions, are not based on the investor’s ownership percentages. Under the HLBV method, a 
calculation is prepared at each balance sheet date to determine the amount that ECT would receive if 
EIPLP were to liquidate all of its assets, as valued in accordance with U.S. GAAP, and distribute that cash 
to the investors. The difference between the calculated liquidation distribution amounts at the beginning 
and the end of the reporting period, after adjusting for capital contributions and distributions, is ECT’s 
share of the earnings or losses from the equity investment for the period.

While ECT and EIPLP are both consolidated in these financial statements, the use of the HLBV method 
by ECT impacts the earnings attributable to redeemable noncontrolling interests reported on Enbridge’s 
Consolidated Statements of Earnings. We continue to recognize Redeemable noncontrolling interests on 
the Consolidated Statements of Financial Position at the maximum redemption value of the trust units 
held by third parties, which references the market price of ENF common shares.

REGULATION
Certain parts of our businesses are subject to regulation by various authorities including, but not limited 
to, the National Energy Board (NEB), the Federal Energy Regulatory Commission (FERC), the Alberta 
Energy Regulator, the New Brunswick Energy and Utilities Board (EUB), the Ontario Energy Board (OEB) 
and La Régie de l’Energie du Québec. Regulatory bodies exercise statutory authority over matters such 
as construction, rates and ratemaking and agreements with customers. To recognize the economic effects 
of the actions of the regulator, the timing of recognition of certain revenues and expenses in these 
operations may differ from that otherwise expected under U.S. GAAP for non rate-regulated entities.

Regulatory assets represent amounts that are expected to be recovered from customers in future periods 
through rates. Regulatory liabilities represent amounts that are expected to be refunded to customers in 
future periods through rates or expected to be paid to cover future abandonment costs in relation to the 
NEB’s Land Matters Consultation Initiative (LMCI). Long-term regulatory assets are recorded in Deferred 
amounts and other assets and current regulatory assets are recorded in Accounts receivable and other. 

114

115

 
 
 
 
 
 
 
Long-term regulatory liabilities are included in Other long-term liabilities and current regulatory liabilities 
are recorded in Accounts payable and other. Regulatory assets are assessed for impairment if we identify 
an event indicative of possible impairment. The recognition of regulatory assets and liabilities is based on 
the actions, or expected future actions, of the regulator. To the extent that the regulator’s actions differ 
from our expectations, the timing and amount of recovery or settlement of regulatory balances could differ 
significantly from those recorded. In the absence of rate regulation, we would generally not recognize 
regulatory assets or liabilities and the earnings impact would be recorded in the period the expenses are 
incurred or revenues are earned. A regulatory asset or liability is recognized in respect of deferred income 
taxes when it is expected the amounts will be recovered or settled through future regulator-approved 
rates.

Allowance for funds used during construction (AFUDC) is included in the cost of property, plant and 
equipment and is depreciated over future periods as part of the total cost of the related asset. AFUDC 
includes both an interest component and, if approved by the regulator, a cost of equity component, which 
are both capitalized based on rates set out in a regulatory agreement. In the absence of rate regulation, 
we would capitalize interest using a capitalization rate based on its cost of borrowing, whereas the 
capitalized equity component, the corresponding earnings during the construction phase and the 
subsequent depreciation would not be recognized.

For certain regulated operations to which U.S. GAAP guidance for phase-in plans applies, negotiated 
depreciation rates recovered in transportation tolls may be less than the depreciation expense calculated 
in accordance with U.S. GAAP in early years of long-term contracts but recovered in future periods when 
tolls exceed depreciation. Depreciation expense on such assets is recorded in accordance with U.S. 
GAAP and no deferred regulatory asset is recorded (Note 6).

With the approval of the applicable regulator, EGD, Union Gas and certain distribution operations 
capitalize a percentage of specified operating costs. These operations are authorized to charge 
depreciation and earn a return on the net book value of such capitalized costs in future years. To the 
extent that the regulator’s actions differ from our expectations, the timing and amount of recovery or 
settlement of capitalized costs could differ significantly from those recorded. In the absence of rate 
regulation, a portion of such costs may be charged to current period earnings.

REVENUE RECOGNITION
For businesses that are not rate-regulated, revenues are recorded when products have been delivered or 
services have been performed, the amount of revenue can be reliably measured and collectability is 
reasonably assured. Customer credit worthiness is assessed prior to agreement signing, as well as 
throughout the contract duration. Certain revenues from liquids and gas pipeline businesses are 
recognized under the terms of committed delivery contracts rather than the cash tolls received. 

Long-term take-or-pay contracts, under which shippers are obligated to pay fixed amounts rateably over 
the contract period regardless of volumes shipped, may contain make-up rights. Make-up rights are 
earned by shippers when minimum volume commitments are not utilized during the period but under 
certain circumstances can be used to offset overages in future periods, subject to expiry periods. We 
recognize revenues associated with make-up rights at the earlier of when the make-up volume is shipped, 
the make-up right expires or when it is determined that the likelihood that the shipper will utilize the make-
up right is remote. 

Certain offshore pipeline transportation contracts require Enbridge to provide transportation services for 
the life of the underlying producing fields. Under these arrangements, shippers pay Enbridge a fixed 
monthly toll for a defined period of time which may be shorter than the estimated reserve life of the 
underlying producing fields, resulting in a contract period which extends past the period of cash collection. 
Fixed monthly toll revenues are recognized ratably over the committed volume made available to 
shippers throughout the contract period, regardless of when cash is received. For the years ended 
December 31, 2017, 2016 and 2015, cash received net of revenue recognized for contracts under make-

up rights and similar deferred revenue arrangements was $196 million, $249 million, and $61 million, 

respectively.

For rate-regulated businesses, revenues are recognized in a manner that is consistent with the underlying 

agreements as approved by the regulators. Natural gas utilities revenues are recorded on the basis of 

regular meter readings and estimates of customer usage from the last meter reading to the end of the 

reporting period. Estimates are based on historical consumption patterns and heating degree days 

experienced. Heating degree days is a measure of coldness that is indicative of volumetric requirements 

for natural gas utilized for heating purposes in our distribution franchise area. Since July 1, 2011, 

Canadian Mainline (excluding Lines 8 and 9) earnings are governed by the Competitive Toll Settlement 

(CTS), under which revenues are recorded when services are performed. Effective on that date, we 

prospectively discontinued the application of rate-regulated accounting for those assets with the 

exception of flow-through income taxes covered by specific rate orders.

For our energy marketing contracts, an estimate of revenues and commodity costs for the month of 

December is included in the Consolidated Statements of Earnings for each year based on the best 

available volume and price data for the commodity delivered and received. 

DERIVATIVE INSTRUMENTS AND HEDGING

Non-qualifying Derivatives 

Non-qualifying derivative instruments are used primarily to economically hedge foreign exchange, interest 

rate and commodity price earnings exposure. Non-qualifying derivatives are measured at fair value with 

changes in fair value recognized in earnings in Transportation and other services revenues, Commodity 

costs, Operating and administrative expense, Other income/(expense) and Interest expense. 

Derivatives in Qualifying Hedging Relationships 

We use derivative financial instruments to manage our exposure to changes in commodity prices, foreign 

exchange rates, interest rates and certain compensation tied to our share price. Hedge accounting is 

optional and requires Enbridge to document the hedging relationship and test the hedging item’s 

effectiveness in offsetting changes in fair values or cash flows of the underlying hedged item on an 

ongoing basis. We present the earnings effects of hedging items with the hedged transaction. Derivatives 

in qualifying hedging relationships are categorized as cash flow hedges, fair value hedges or net 

We use cash flow hedges to manage our exposure to changes in commodity prices, foreign exchange 

rates, interest rates and certain compensation tied to our share price. The effective portion of the change 

in the fair value of a cash flow hedging instrument is recorded in Other comprehensive income/(loss) 

(OCI) and is reclassified to earnings when the hedged item impacts earnings. Any hedge ineffectiveness 

is recorded in current period earnings. 

If a derivative instrument designated as a cash flow hedge ceases to be effective or is terminated, hedge 

accounting is discontinued and the gain or loss at that date is deferred in OCI and recognized 

concurrently with the related transaction. If a hedged anticipated transaction is no longer probable, the 

gain or loss is recognized immediately in earnings. Subsequent gains and losses from derivative 

instruments for which hedge accounting has been discontinued are recognized in earnings in the period 

investment hedges.

Cash Flow Hedges 

in which they occur. 

Fair Value Hedges 

We use fair value hedges to hedge the fair value of debt instruments. The change in the fair value of the 

hedging instrument is recorded in earnings with changes in the fair value of the hedged asset or liability 

that is designated as part of the hedging relationship. If a fair value hedge is discontinued or ceases to be 

effective, the hedged asset or liability, otherwise required to be carried at cost or amortized cost, ceases 

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Long-term regulatory liabilities are included in Other long-term liabilities and current regulatory liabilities 

are recorded in Accounts payable and other. Regulatory assets are assessed for impairment if we identify 

an event indicative of possible impairment. The recognition of regulatory assets and liabilities is based on 

the actions, or expected future actions, of the regulator. To the extent that the regulator’s actions differ 

from our expectations, the timing and amount of recovery or settlement of regulatory balances could differ 

significantly from those recorded. In the absence of rate regulation, we would generally not recognize 

regulatory assets or liabilities and the earnings impact would be recorded in the period the expenses are 

incurred or revenues are earned. A regulatory asset or liability is recognized in respect of deferred income 

taxes when it is expected the amounts will be recovered or settled through future regulator-approved 

rates.

Allowance for funds used during construction (AFUDC) is included in the cost of property, plant and 

equipment and is depreciated over future periods as part of the total cost of the related asset. AFUDC 

includes both an interest component and, if approved by the regulator, a cost of equity component, which 

are both capitalized based on rates set out in a regulatory agreement. In the absence of rate regulation, 

we would capitalize interest using a capitalization rate based on its cost of borrowing, whereas the 

capitalized equity component, the corresponding earnings during the construction phase and the 

subsequent depreciation would not be recognized.

For certain regulated operations to which U.S. GAAP guidance for phase-in plans applies, negotiated 

depreciation rates recovered in transportation tolls may be less than the depreciation expense calculated 

in accordance with U.S. GAAP in early years of long-term contracts but recovered in future periods when 

tolls exceed depreciation. Depreciation expense on such assets is recorded in accordance with U.S. 

GAAP and no deferred regulatory asset is recorded (Note 6).

With the approval of the applicable regulator, EGD, Union Gas and certain distribution operations 

capitalize a percentage of specified operating costs. These operations are authorized to charge 

depreciation and earn a return on the net book value of such capitalized costs in future years. To the 

extent that the regulator’s actions differ from our expectations, the timing and amount of recovery or 

settlement of capitalized costs could differ significantly from those recorded. In the absence of rate 

regulation, a portion of such costs may be charged to current period earnings.

REVENUE RECOGNITION

For businesses that are not rate-regulated, revenues are recorded when products have been delivered or 

services have been performed, the amount of revenue can be reliably measured and collectability is 

reasonably assured. Customer credit worthiness is assessed prior to agreement signing, as well as 

throughout the contract duration. Certain revenues from liquids and gas pipeline businesses are 

recognized under the terms of committed delivery contracts rather than the cash tolls received. 

Long-term take-or-pay contracts, under which shippers are obligated to pay fixed amounts rateably over 

the contract period regardless of volumes shipped, may contain make-up rights. Make-up rights are 

earned by shippers when minimum volume commitments are not utilized during the period but under 

certain circumstances can be used to offset overages in future periods, subject to expiry periods. We 

recognize revenues associated with make-up rights at the earlier of when the make-up volume is shipped, 

the make-up right expires or when it is determined that the likelihood that the shipper will utilize the make-

up right is remote. 

Certain offshore pipeline transportation contracts require Enbridge to provide transportation services for 

the life of the underlying producing fields. Under these arrangements, shippers pay Enbridge a fixed 

monthly toll for a defined period of time which may be shorter than the estimated reserve life of the 

underlying producing fields, resulting in a contract period which extends past the period of cash collection. 

Fixed monthly toll revenues are recognized ratably over the committed volume made available to 

shippers throughout the contract period, regardless of when cash is received. For the years ended 

December 31, 2017, 2016 and 2015, cash received net of revenue recognized for contracts under make-

up rights and similar deferred revenue arrangements was $196 million, $249 million, and $61 million, 
respectively.

For rate-regulated businesses, revenues are recognized in a manner that is consistent with the underlying 
agreements as approved by the regulators. Natural gas utilities revenues are recorded on the basis of 
regular meter readings and estimates of customer usage from the last meter reading to the end of the 
reporting period. Estimates are based on historical consumption patterns and heating degree days 
experienced. Heating degree days is a measure of coldness that is indicative of volumetric requirements 
for natural gas utilized for heating purposes in our distribution franchise area. Since July 1, 2011, 
Canadian Mainline (excluding Lines 8 and 9) earnings are governed by the Competitive Toll Settlement 
(CTS), under which revenues are recorded when services are performed. Effective on that date, we 
prospectively discontinued the application of rate-regulated accounting for those assets with the 
exception of flow-through income taxes covered by specific rate orders.

For our energy marketing contracts, an estimate of revenues and commodity costs for the month of 
December is included in the Consolidated Statements of Earnings for each year based on the best 
available volume and price data for the commodity delivered and received. 

DERIVATIVE INSTRUMENTS AND HEDGING
Non-qualifying Derivatives 
Non-qualifying derivative instruments are used primarily to economically hedge foreign exchange, interest 
rate and commodity price earnings exposure. Non-qualifying derivatives are measured at fair value with 
changes in fair value recognized in earnings in Transportation and other services revenues, Commodity 
costs, Operating and administrative expense, Other income/(expense) and Interest expense. 

Derivatives in Qualifying Hedging Relationships 
We use derivative financial instruments to manage our exposure to changes in commodity prices, foreign 
exchange rates, interest rates and certain compensation tied to our share price. Hedge accounting is 
optional and requires Enbridge to document the hedging relationship and test the hedging item’s 
effectiveness in offsetting changes in fair values or cash flows of the underlying hedged item on an 
ongoing basis. We present the earnings effects of hedging items with the hedged transaction. Derivatives 
in qualifying hedging relationships are categorized as cash flow hedges, fair value hedges or net 
investment hedges.

Cash Flow Hedges 
We use cash flow hedges to manage our exposure to changes in commodity prices, foreign exchange 
rates, interest rates and certain compensation tied to our share price. The effective portion of the change 
in the fair value of a cash flow hedging instrument is recorded in Other comprehensive income/(loss) 
(OCI) and is reclassified to earnings when the hedged item impacts earnings. Any hedge ineffectiveness 
is recorded in current period earnings. 

If a derivative instrument designated as a cash flow hedge ceases to be effective or is terminated, hedge 
accounting is discontinued and the gain or loss at that date is deferred in OCI and recognized 
concurrently with the related transaction. If a hedged anticipated transaction is no longer probable, the 
gain or loss is recognized immediately in earnings. Subsequent gains and losses from derivative 
instruments for which hedge accounting has been discontinued are recognized in earnings in the period 
in which they occur. 

Fair Value Hedges 
We use fair value hedges to hedge the fair value of debt instruments. The change in the fair value of the 
hedging instrument is recorded in earnings with changes in the fair value of the hedged asset or liability 
that is designated as part of the hedging relationship. If a fair value hedge is discontinued or ceases to be 
effective, the hedged asset or liability, otherwise required to be carried at cost or amortized cost, ceases 

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to be remeasured at fair value and the cumulative fair value adjustment to the carrying value of the 
hedged item is recognized in earnings over the remaining life of the hedged item. 

Net Investment Hedges 
Gains and losses arising from translation of net investment in foreign operations from their functional 
currencies to Enbridge’s Canadian dollar presentation currency are included in cumulative translation 
adjustments (CTA). We designate foreign currency derivatives and United States dollar denominated debt 
as hedges of net investments in United States dollar denominated foreign operations. As a result, the 
effective portion of the change in the fair value of the foreign currency derivatives as well as the 
translation of United States dollar denominated debt are reflected in OCI and any ineffectiveness is 
reflected in current period earnings. Amounts recognized previously in Accumulated other comprehensive 
income/(loss) (AOCI) are reclassified to earnings when there is a reduction of the hedged net investment 
resulting from disposal of a foreign operation. 

Classification of Derivatives 
We recognize the fair market value of derivative instruments on the Consolidated Statements of Financial 
Position as current and non-current assets or liabilities depending on the timing of the settlements and the 
resulting cash flows associated with the instruments. Fair value amounts related to cash flows occurring 
beyond one year are classified as non-current. 

Cash inflows and outflows related to derivative instruments are classified as Operating activities on the 
Consolidated Statements of Cash Flows. 

Balance Sheet Offset 
Assets and liabilities arising from derivative instruments may be offset in the Consolidated Statements of 
Financial Position when we have the legal right and intention to settle them on a net basis. 

Transaction Costs 
Transaction costs are incremental costs directly related to the acquisition of a financial asset or the 
issuance of a financial liability. We incur transaction costs primarily from the issuance of debt and account 
for these costs as a deduction from Long-term debt on the Statements of Financial Position. These costs 
are amortized using the effective interest rate method over the term of the related debt instrument and are 
recorded in Interest expense.

EQUITY INVESTMENTS 
Equity investments over which we exercise significant influence, but do not have controlling financial 
interests, are accounted for using the equity method. Equity investments are initially measured at cost 
and are adjusted for our proportionate share of undistributed equity earnings or loss. Equity investments 
are increased for contributions made to and decreased for distributions received from the investees. To 
the extent an equity investee undertakes activities necessary to commence its planned principal 
operations, we capitalize interest costs associated with its investment during such period. 

RESTRICTED LONG-TERM INVESTMENTS 
Long-term investments that are restricted as to withdrawal or usage, for the purposes of the NEB’s LMCI, 
are presented as Restricted long-term investments on the Consolidated Statements of Financial Position. 

OTHER INVESTMENTS 
Generally, we classify equity investments in entities over which we do not exercise significant influence 
and that do not trade on an actively quoted market as other investments carried at cost. Financial assets 
in this category are initially recorded at fair value with no subsequent re-measurement. Any investments 
which do trade on an active market are classified as available for sale investments measured at fair value 
through OCI. Dividends received from investments carried at cost are recognized in earnings when the 
right to receive payment is established. 

NONCONTROLLING INTERESTS 

Noncontrolling interests represent ownership interests attributable to third parties in certain consolidated 

subsidiaries, limited partnerships and VIEs. The portion of equity not owned by us in such entities is 

reflected as Noncontrolling interests within the equity section of the Consolidated Statements of Financial 

Position and, in the case of redeemable noncontrolling interests, within the mezzanine section of the 

Consolidated Statements of Financial Position between long-term liabilities and equity. 

The Fund’s noncontrolling interest holders have the option to redeem the Fund trust units for cash, 

subject to certain limitations. Redeemable noncontrolling interests are recognized at the maximum 

redemption value of the trust units held by third parties, which references the market price of ENF 

common shares. On a quarterly basis, changes in estimated redemption values are reflected as a charge 

or credit to retained earnings. 

The use of the HLBV method by ECT impacts the earnings attributable to redeemable noncontrolling 

interests reported on our Consolidated Statements of Earnings. 

INCOME TAXES 

Income taxes are accounted for using the liability method. Deferred income tax assets and liabilities are 

recorded based on temporary differences between the tax bases of assets and liabilities and their 

carrying values for accounting purposes. Deferred income tax assets and liabilities are measured using 

the tax rate that is expected to apply when the temporary differences reverse. For our regulated 

operations, a deferred income tax liability or asset is recognized with a corresponding regulatory asset or 

liability, respectively, to the extent taxes can be recovered through rates. Any interest and/or penalty 

incurred related to tax is reflected in Income taxes. 

FOREIGN CURRENCY TRANSACTIONS AND TRANSLATION 

Foreign currency transactions are those transactions whose terms are denominated in a currency other 

than the currency of the primary economic environment in which Enbridge or a reporting subsidiary 

operates, referred to as the functional currency. Transactions denominated in foreign currencies are 

translated into the functional currency using the exchange rate prevailing at the date of transaction. 

Monetary assets and liabilities denominated in foreign currencies are translated to the functional currency 

using the rate of exchange in effect at the balance sheet date. Exchange gains and losses resulting from 

translation of monetary assets and liabilities are included in the Consolidated Statements of Earnings in 

the period in which they arise.

Gains and losses arising from translation of foreign operations’ functional currencies to our Canadian 

dollar presentation currency are included in the CTA component of AOCI and are recognized in earnings 

upon sale of the foreign operation. Asset and liability accounts are translated at the exchange rates in 

effect on the balance sheet date, while revenues and expenses are translated using monthly average 

Cash and cash equivalents include short-term investments with a term to maturity of three months or less 

exchange rates. 

CASH AND CASH EQUIVALENTS 

when purchased. 

RESTRICTED CASH 

Position. 

LOANS AND RECEIVABLES 

Cash and cash equivalents that are restricted as to withdrawal or usage, in accordance with specific 

commercial arrangements, are presented as Restricted cash on the Consolidated Statements of Financial 

Affiliate long-term notes receivable are measured at amortized cost using the effective interest rate 

method, net of any impairment losses recognized. Accounts receivable and other are measured at cost. 

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to be remeasured at fair value and the cumulative fair value adjustment to the carrying value of the 

hedged item is recognized in earnings over the remaining life of the hedged item. 

Net Investment Hedges 

Gains and losses arising from translation of net investment in foreign operations from their functional 

currencies to Enbridge’s Canadian dollar presentation currency are included in cumulative translation 

adjustments (CTA). We designate foreign currency derivatives and United States dollar denominated debt 

as hedges of net investments in United States dollar denominated foreign operations. As a result, the 

effective portion of the change in the fair value of the foreign currency derivatives as well as the 

translation of United States dollar denominated debt are reflected in OCI and any ineffectiveness is 

reflected in current period earnings. Amounts recognized previously in Accumulated other comprehensive 

income/(loss) (AOCI) are reclassified to earnings when there is a reduction of the hedged net investment 

resulting from disposal of a foreign operation. 

Classification of Derivatives 

We recognize the fair market value of derivative instruments on the Consolidated Statements of Financial 

Position as current and non-current assets or liabilities depending on the timing of the settlements and the 

resulting cash flows associated with the instruments. Fair value amounts related to cash flows occurring 

beyond one year are classified as non-current. 

Cash inflows and outflows related to derivative instruments are classified as Operating activities on the 

Consolidated Statements of Cash Flows. 

Balance Sheet Offset 

Assets and liabilities arising from derivative instruments may be offset in the Consolidated Statements of 

Financial Position when we have the legal right and intention to settle them on a net basis. 

Transaction Costs 

Transaction costs are incremental costs directly related to the acquisition of a financial asset or the 

issuance of a financial liability. We incur transaction costs primarily from the issuance of debt and account 

for these costs as a deduction from Long-term debt on the Statements of Financial Position. These costs 

are amortized using the effective interest rate method over the term of the related debt instrument and are 

recorded in Interest expense.

EQUITY INVESTMENTS 

Equity investments over which we exercise significant influence, but do not have controlling financial 

interests, are accounted for using the equity method. Equity investments are initially measured at cost 

and are adjusted for our proportionate share of undistributed equity earnings or loss. Equity investments 

are increased for contributions made to and decreased for distributions received from the investees. To 

the extent an equity investee undertakes activities necessary to commence its planned principal 

operations, we capitalize interest costs associated with its investment during such period. 

RESTRICTED LONG-TERM INVESTMENTS 

Long-term investments that are restricted as to withdrawal or usage, for the purposes of the NEB’s LMCI, 

are presented as Restricted long-term investments on the Consolidated Statements of Financial Position. 

OTHER INVESTMENTS 

Generally, we classify equity investments in entities over which we do not exercise significant influence 

and that do not trade on an actively quoted market as other investments carried at cost. Financial assets 

in this category are initially recorded at fair value with no subsequent re-measurement. Any investments 

which do trade on an active market are classified as available for sale investments measured at fair value 

through OCI. Dividends received from investments carried at cost are recognized in earnings when the 

right to receive payment is established. 

NONCONTROLLING INTERESTS 
Noncontrolling interests represent ownership interests attributable to third parties in certain consolidated 
subsidiaries, limited partnerships and VIEs. The portion of equity not owned by us in such entities is 
reflected as Noncontrolling interests within the equity section of the Consolidated Statements of Financial 
Position and, in the case of redeemable noncontrolling interests, within the mezzanine section of the 
Consolidated Statements of Financial Position between long-term liabilities and equity. 

The Fund’s noncontrolling interest holders have the option to redeem the Fund trust units for cash, 
subject to certain limitations. Redeemable noncontrolling interests are recognized at the maximum 
redemption value of the trust units held by third parties, which references the market price of ENF 
common shares. On a quarterly basis, changes in estimated redemption values are reflected as a charge 
or credit to retained earnings. 

The use of the HLBV method by ECT impacts the earnings attributable to redeemable noncontrolling 
interests reported on our Consolidated Statements of Earnings. 

INCOME TAXES 
Income taxes are accounted for using the liability method. Deferred income tax assets and liabilities are 
recorded based on temporary differences between the tax bases of assets and liabilities and their 
carrying values for accounting purposes. Deferred income tax assets and liabilities are measured using 
the tax rate that is expected to apply when the temporary differences reverse. For our regulated 
operations, a deferred income tax liability or asset is recognized with a corresponding regulatory asset or 
liability, respectively, to the extent taxes can be recovered through rates. Any interest and/or penalty 
incurred related to tax is reflected in Income taxes. 

FOREIGN CURRENCY TRANSACTIONS AND TRANSLATION 
Foreign currency transactions are those transactions whose terms are denominated in a currency other 
than the currency of the primary economic environment in which Enbridge or a reporting subsidiary 
operates, referred to as the functional currency. Transactions denominated in foreign currencies are 
translated into the functional currency using the exchange rate prevailing at the date of transaction. 
Monetary assets and liabilities denominated in foreign currencies are translated to the functional currency 
using the rate of exchange in effect at the balance sheet date. Exchange gains and losses resulting from 
translation of monetary assets and liabilities are included in the Consolidated Statements of Earnings in 
the period in which they arise.

Gains and losses arising from translation of foreign operations’ functional currencies to our Canadian 
dollar presentation currency are included in the CTA component of AOCI and are recognized in earnings 
upon sale of the foreign operation. Asset and liability accounts are translated at the exchange rates in 
effect on the balance sheet date, while revenues and expenses are translated using monthly average 
exchange rates. 

CASH AND CASH EQUIVALENTS 
Cash and cash equivalents include short-term investments with a term to maturity of three months or less 
when purchased. 

RESTRICTED CASH 
Cash and cash equivalents that are restricted as to withdrawal or usage, in accordance with specific 
commercial arrangements, are presented as Restricted cash on the Consolidated Statements of Financial 
Position. 

LOANS AND RECEIVABLES 
Affiliate long-term notes receivable are measured at amortized cost using the effective interest rate 
method, net of any impairment losses recognized. Accounts receivable and other are measured at cost. 

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ALLOWANCE FOR DOUBTFUL ACCOUNTS 
Allowance for doubtful accounts is determined based on collection history. When we have determined that 
further collection efforts are unlikely to be successful, amounts charged to the allowance for doubtful 
accounts are applied against the impaired accounts receivable.

NATURAL GAS IMBALANCES
The Consolidated Statements of Financial Position include in-kind balances as a result of differences in 
gas volumes received and delivered for customers. Since settlement of certain imbalances is in-kind, 
changes in the balances do not have an effect on our Consolidated Statements of Earnings or 
Consolidated Statements of Cash Flows. Most natural gas volumes owed to or by us are valued at natural 
gas market index prices as at the balance sheet dates.

INVENTORY 
Inventory is comprised of natural gas in storage held in EGD and Union Gas, and crude oil and natural 
gas held primarily by energy services businesses in the Energy Services segment. Natural gas in storage 
in EGD and Union Gas is recorded at the quarterly prices approved by the OEB in the determination of 
distribution rates. The actual price of gas purchased may differ from the OEB approved price. The 
difference between the approved price and the actual cost of the gas purchased is deferred as a liability 
for future refund or as an asset for collection as approved by the OEB. Other commodities inventory is 
recorded at the lower of cost, as determined on a weighted average basis, or market value. Upon 
disposition, other commodities inventory is recorded to Commodity costs on the Consolidated Statements 
of Earnings at the weighted average cost of inventory, including any adjustments recorded to reduce 
inventory to market value.

PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment is recorded at historical cost. Expenditures for construction, expansion, 
major renewals and betterments are capitalized. Maintenance and repair costs are expensed as incurred. 
Expenditures for project development are capitalized if they are expected to have future benefit. We 
capitalize interest incurred during construction for non-rate-regulated assets. For rate-regulated assets, 
AFUDC is included in the cost of property, plant and equipment and is depreciated over future periods as 
part of the total cost of the related asset. AFUDC includes both an interest component and, if approved by 
the regulator, a cost of equity component. 

Two primary methods of depreciation are utilized. For distinct assets, depreciation is generally provided 
on a straight-line basis over the estimated useful lives of the assets commencing when the asset is 
placed in service. For largely homogeneous groups of assets with comparable useful lives, the pool 
method of accounting for property, plant and equipment is followed whereby similar assets are grouped 
and depreciated as a pool. When group assets are retired or otherwise disposed of, gains and losses are 
generally not reflected in earnings but are booked as an adjustment to accumulated depreciation. 

DEFERRED AMOUNTS AND OTHER ASSETS 
Deferred amounts and other assets primarily include: costs which regulatory authorities have permitted, 
or are expected to permit, to be recovered through future rates including deferred income taxes; 
contractual receivables under the terms of long-term delivery contracts; and derivative financial 
instruments.

INTANGIBLE ASSETS 
Intangible assets consist primarily of certain software costs, customer relationships and emission 
allowances. We capitalize costs incurred during the application development stage of internal use 
software projects. Customer relationships represent the underlying relationship from long-term 
agreements with customers that are capitalized upon acquisition. Emission allowances, which are 
recorded at their original cost, are purchased in order to meet greenhouse gas (GHG) compliance 
obligations. Intangible assets are generally amortized on a straight-line basis over their expected lives, 

commencing when the asset is available for use, with the exception of emission allowances, which are 

not amortized as they will be used to satisfy compliance obligations as they come due. 

GOODWILL 

Goodwill represents the excess of the purchase price over the fair value of net identifiable assets on 

acquisition of a business. The carrying value of goodwill, which is not amortized, is assessed for 

impairment annually, or more frequently if events or changes in circumstances arise that suggest the 

carrying value of goodwill may be impaired. 

We perform our annual review for impairment at the reporting unit level, which is identified by assessing 

whether the components of our operating segments constitute businesses for which discrete information 

is available, whether segment management regularly reviews the operating results of those components 

and whether the economic and regulatory characteristics are similar. We determined that our reporting 

units are equivalent to our reportable segments, with the exception of the gas transmission and gas 

midstream reportable segment which is divided at the component level into two reporting units. We have 

the option to first assess qualitative factors to determine whether it is necessary to perform the 

quantitative goodwill impairment test. The quantitative goodwill impairment test involves determining the 

fair value of our reporting units and comparing those values to the carrying value of each reporting unit. If 

the carrying value of a reporting unit, including allocated goodwill, exceeds its fair value, goodwill 

impairment is measured at the amount by which the reporting unit’s carrying value exceeds its fair value. 

This amount should not exceed the carrying amount of goodwill. 

IMPAIRMENT

We review the carrying values of our long-lived assets as events or changes in circumstances warrant. If 

it is determined that the carrying value of an asset exceeds the undiscounted cash flows expected from 

the asset, we calculate fair value based on the discounted cash flows and write the assets down to the 

extent that the carrying value exceeds the fair value.  

With respect to investments in debt and equity securities, we assess at each balance sheet date whether 

there is objective evidence that a financial asset is impaired by completing a quantitative or qualitative 

analysis of factors impacting the investment. If there is objective evidence of impairment, we value the 

expected discounted cash flows using observable market inputs and determine whether the decline below 

carrying value is other than temporary. If the decline is determined to be other than temporary, an 

impairment charge is recorded in earnings with an offsetting reduction to the carrying value of the asset. 

With respect to other financial assets, we assess the assets for impairment when there is no longer 

reasonable assurance of timely collection. If evidence of impairment is noted, we reduce the value of the 

financial asset to its estimated realizable amount, determined using discounted expected future cash 

flows. 

ASSET RETIREMENT OBLIGATIONS

ARO associated with the retirement of long-lived assets are measured at fair value and recognized as 

Accounts payable and other or Other long-term liabilities in the period in which they can be reasonably 

determined. The fair value approximates the cost a third party would charge to perform the tasks 

necessary to retire such assets and is recognized at the present value of expected future cash flows. 

AROs are added to the carrying value of the associated asset and depreciated over the asset’s useful life. 

The corresponding liability is accreted over time through charges to earnings and is reduced by actual 

costs of decommissioning and reclamation. Our estimates of retirement costs could change as a result of 

changes in cost estimates and regulatory requirements. 

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ALLOWANCE FOR DOUBTFUL ACCOUNTS 

Allowance for doubtful accounts is determined based on collection history. When we have determined that 

further collection efforts are unlikely to be successful, amounts charged to the allowance for doubtful 

accounts are applied against the impaired accounts receivable.

NATURAL GAS IMBALANCES

The Consolidated Statements of Financial Position include in-kind balances as a result of differences in 

gas volumes received and delivered for customers. Since settlement of certain imbalances is in-kind, 

changes in the balances do not have an effect on our Consolidated Statements of Earnings or 

Consolidated Statements of Cash Flows. Most natural gas volumes owed to or by us are valued at natural 

gas market index prices as at the balance sheet dates.

INVENTORY 

Inventory is comprised of natural gas in storage held in EGD and Union Gas, and crude oil and natural 

gas held primarily by energy services businesses in the Energy Services segment. Natural gas in storage 

in EGD and Union Gas is recorded at the quarterly prices approved by the OEB in the determination of 

distribution rates. The actual price of gas purchased may differ from the OEB approved price. The 

difference between the approved price and the actual cost of the gas purchased is deferred as a liability 

for future refund or as an asset for collection as approved by the OEB. Other commodities inventory is 

recorded at the lower of cost, as determined on a weighted average basis, or market value. Upon 

disposition, other commodities inventory is recorded to Commodity costs on the Consolidated Statements 

of Earnings at the weighted average cost of inventory, including any adjustments recorded to reduce 

inventory to market value.

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment is recorded at historical cost. Expenditures for construction, expansion, 

major renewals and betterments are capitalized. Maintenance and repair costs are expensed as incurred. 

Expenditures for project development are capitalized if they are expected to have future benefit. We 

capitalize interest incurred during construction for non-rate-regulated assets. For rate-regulated assets, 

AFUDC is included in the cost of property, plant and equipment and is depreciated over future periods as 

part of the total cost of the related asset. AFUDC includes both an interest component and, if approved by 

the regulator, a cost of equity component. 

Two primary methods of depreciation are utilized. For distinct assets, depreciation is generally provided 

on a straight-line basis over the estimated useful lives of the assets commencing when the asset is 

placed in service. For largely homogeneous groups of assets with comparable useful lives, the pool 

method of accounting for property, plant and equipment is followed whereby similar assets are grouped 

and depreciated as a pool. When group assets are retired or otherwise disposed of, gains and losses are 

generally not reflected in earnings but are booked as an adjustment to accumulated depreciation. 

DEFERRED AMOUNTS AND OTHER ASSETS 

Deferred amounts and other assets primarily include: costs which regulatory authorities have permitted, 

or are expected to permit, to be recovered through future rates including deferred income taxes; 

contractual receivables under the terms of long-term delivery contracts; and derivative financial 

instruments.

INTANGIBLE ASSETS 

Intangible assets consist primarily of certain software costs, customer relationships and emission 

allowances. We capitalize costs incurred during the application development stage of internal use 

software projects. Customer relationships represent the underlying relationship from long-term 

agreements with customers that are capitalized upon acquisition. Emission allowances, which are 

recorded at their original cost, are purchased in order to meet greenhouse gas (GHG) compliance 

obligations. Intangible assets are generally amortized on a straight-line basis over their expected lives, 

commencing when the asset is available for use, with the exception of emission allowances, which are 
not amortized as they will be used to satisfy compliance obligations as they come due. 

GOODWILL 
Goodwill represents the excess of the purchase price over the fair value of net identifiable assets on 
acquisition of a business. The carrying value of goodwill, which is not amortized, is assessed for 
impairment annually, or more frequently if events or changes in circumstances arise that suggest the 
carrying value of goodwill may be impaired. 

We perform our annual review for impairment at the reporting unit level, which is identified by assessing 
whether the components of our operating segments constitute businesses for which discrete information 
is available, whether segment management regularly reviews the operating results of those components 
and whether the economic and regulatory characteristics are similar. We determined that our reporting 
units are equivalent to our reportable segments, with the exception of the gas transmission and gas 
midstream reportable segment which is divided at the component level into two reporting units. We have 
the option to first assess qualitative factors to determine whether it is necessary to perform the 
quantitative goodwill impairment test. The quantitative goodwill impairment test involves determining the 
fair value of our reporting units and comparing those values to the carrying value of each reporting unit. If 
the carrying value of a reporting unit, including allocated goodwill, exceeds its fair value, goodwill 
impairment is measured at the amount by which the reporting unit’s carrying value exceeds its fair value. 
This amount should not exceed the carrying amount of goodwill. 

IMPAIRMENT
We review the carrying values of our long-lived assets as events or changes in circumstances warrant. If 
it is determined that the carrying value of an asset exceeds the undiscounted cash flows expected from 
the asset, we calculate fair value based on the discounted cash flows and write the assets down to the 
extent that the carrying value exceeds the fair value.  

With respect to investments in debt and equity securities, we assess at each balance sheet date whether 
there is objective evidence that a financial asset is impaired by completing a quantitative or qualitative 
analysis of factors impacting the investment. If there is objective evidence of impairment, we value the 
expected discounted cash flows using observable market inputs and determine whether the decline below 
carrying value is other than temporary. If the decline is determined to be other than temporary, an 
impairment charge is recorded in earnings with an offsetting reduction to the carrying value of the asset. 

With respect to other financial assets, we assess the assets for impairment when there is no longer 
reasonable assurance of timely collection. If evidence of impairment is noted, we reduce the value of the 
financial asset to its estimated realizable amount, determined using discounted expected future cash 
flows. 

ASSET RETIREMENT OBLIGATIONS
ARO associated with the retirement of long-lived assets are measured at fair value and recognized as 
Accounts payable and other or Other long-term liabilities in the period in which they can be reasonably 
determined. The fair value approximates the cost a third party would charge to perform the tasks 
necessary to retire such assets and is recognized at the present value of expected future cash flows. 
AROs are added to the carrying value of the associated asset and depreciated over the asset’s useful life. 
The corresponding liability is accreted over time through charges to earnings and is reduced by actual 
costs of decommissioning and reclamation. Our estimates of retirement costs could change as a result of 
changes in cost estimates and regulatory requirements. 

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RETIREMENT AND POSTRETIREMENT BENEFITS
We maintain pension plans which provide defined benefit and defined contribution pension benefits. 

Defined benefit pension plan costs are determined using actuarial methods and are funded through 
contributions determined using the projected benefit method, which incorporates management’s best 
estimates of future salary levels, other cost escalations, retirement ages of employees and other actuarial 
factors including discount rates and mortality. 

We use mortality tables issued by the Society of Actuaries in the United States (revised in 2016) and the 
Canadian Institute of Actuaries tables (revised in 2014) to measure our benefit obligations of our United 
States pension plan (the United States Plan) and our Canadian pension plans (the Canadian Plans), 
respectively. We determine discount rates by reference to rates of high-quality long-term corporate bonds 
with maturities that approximate the timing of future payments we anticipate making under each of the 
respective plans. Pension cost is charged to earnings and includes: 

•  Cost of pension plan benefits provided in exchange for employee services rendered during the 

year;
• 
Interest cost of pension plan obligations;
•  Expected return on pension plan assets;
•  Amortization of the prior service costs and amendments on a straight-line basis over the expected 

average remaining service period of the active employee group covered by the plans; and
•  Amortization of cumulative unrecognized net actuarial gains and losses in excess of 10% of the 
greater of the accrued benefit obligation or the fair value of plan assets, over the expected 
average remaining service life of the active employee group covered by the plans.

Actuarial gains and losses arise from the difference between the actual and expected rate of return on 
plan assets for that period or from changes in actuarial assumptions used to determine the accrued 
benefit obligation, including discount rate, changes in headcount or salary inflation experience. 

Pension plan assets are measured at fair value. The expected return on pension plan assets is 
determined using market related values and assumptions on the specific invested asset mix within the 
pension plans. The market related values reflect estimated return on investments consistent with long-
term historical averages for similar assets. 

For defined contribution plans, contributions made by Enbridge are expensed in the period in which the 
contribution occurs. 

We also provide OPEB other than pensions, including group health care and life insurance benefits for 
eligible retirees, their spouses and qualified dependents. The cost of such benefits is accrued during the 
years in which employees render service. 

The overfunded or underfunded status of defined benefit pension and OPEB plans is recognized as 
Deferred amounts and other assets, Accounts payable and other or Other long-term liabilities, on the 
Consolidated Statements of Financial Position. A plan’s funded status is measured as the difference 
between the fair value of plan assets and the plan’s projected benefit obligation. Any unrecognized 
actuarial gains and losses and prior service costs and credits that arise during the period are recognized 
as a component of OCI, net of tax. 

Certain regulated utility operations of Enbridge record regulatory adjustments to reflect the difference 
between pension expense and OPEB costs for accounting purposes and the pension expense and OPEB 
costs for ratemaking purposes. Offsetting regulatory assets or liabilities are recorded to the extent 
pension expense or OPEB costs are expected to be collected from or refunded to customers, 
respectively, in future rates. In the absence of rate regulation, regulatory balances would not be recorded 
and pension and OPEB costs would be charged to earnings and OCI on an accrual basis.

STOCK-BASED COMPENSATION

Incentive Stock Options (ISO) granted are recorded using the fair value method. Under this method, 

compensation expense is measured at the grant date based on the fair value of the ISO granted as 

calculated by the Black-Scholes-Merton model and is recognized on a straight-line basis over the shorter 

of the vesting period or the period to early retirement eligibility, with a corresponding credit to Additional 

paid-in capital. Balances in Additional paid-in capital are transferred to Share capital when the options are 

exercised. 

Restricted Stock Units (RSU) are cash settled awards for which the related liability is remeasured each 

reporting period. RSUs vest at the completion of a 35-month term. During the vesting term, compensation 

expense is recorded based on the number of units outstanding and the current market price of Enbridge’s 

shares with an offset to Accounts payable and other or to Other long-term liabilities. 

COMMITMENTS, CONTINGENCIES AND ENVIRONMENTAL LIABILITIES

We expense or capitalize, as appropriate, expenditures for ongoing compliance with environmental 

regulations that relate to past or current operations. We expense costs incurred for remediation of existing 

environmental contamination caused by past operations that do not benefit future periods by preventing 

or eliminating future contamination. We record liabilities for environmental matters when assessments 

indicate that remediation efforts are probable and the costs can be reasonably estimated. Estimates of 

environmental liabilities are based on currently available facts, existing technology and presently enacted 

laws and regulations taking into consideration the likely effects of inflation and other factors. These 

amounts also consider prior experience in remediating contaminated sites, other companies’ clean-up 

experience and data released by government organizations. Our estimates are subject to revision in 

future periods based on actual costs or new information and are included in Environmental liabilities and 

Other long-term liabilities in the Consolidated Statements of Financial Position at their undiscounted 

amounts. There is always a potential of incurring additional costs in connection with environmental 

liabilities due to variations in any or all of the categories described above, including modified or revised 

requirements from regulatory agencies, in addition to fines and penalties, as well as expenditures 

associated with litigation and settlement of claims. We evaluate recoveries from insurance coverage 

separately from the liability and, when recovery is probable, we record and report an asset separately 

from the associated liability in the Consolidated Statements of Financial Position. 

Liabilities for other commitments and contingencies are recognized when, after fully analyzing available 

information, we determine it is either probable that an asset has been impaired, or that a liability has been 

incurred, and the amount of impairment or loss can be reasonably estimated. When a range of probable 

loss can be estimated, we recognize the most likely amount, or if no amount is more likely than another, 

the minimum of the range of probable loss is accrued. We expense legal costs associated with loss 

contingencies as such costs are incurred.

3.  CHANGES IN ACCOUNTING POLICIES 

CHANGES IN ACCOUNTING POLICIES  

Goodwill 

We previously performed our annual goodwill impairment test on October 1 of each fiscal year. Beginning 

with the quarter ended December 31, 2017, we moved the annual goodwill impairment test from October 

1 to April 1 to better align with the preparation and review of our business plan, which is used in the test. 

The change does not delay, accelerate or avoid an impairment charge. 

ADOPTION OF NEW STANDARDS  

Simplifying the Measurement of Goodwill Impairment  

Effective January 1, 2017, we early adopted Accounting Standards Update (ASU) 2017-04 and applied 

the standard on a prospective basis. Under the new guidance, goodwill impairment will now be the 

amount by which a reporting unit’s carrying value exceeds its fair value; this amount should not exceed 

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RETIREMENT AND POSTRETIREMENT BENEFITS

We maintain pension plans which provide defined benefit and defined contribution pension benefits. 

Defined benefit pension plan costs are determined using actuarial methods and are funded through 

contributions determined using the projected benefit method, which incorporates management’s best 

estimates of future salary levels, other cost escalations, retirement ages of employees and other actuarial 

factors including discount rates and mortality. 

We use mortality tables issued by the Society of Actuaries in the United States (revised in 2016) and the 

Canadian Institute of Actuaries tables (revised in 2014) to measure our benefit obligations of our United 

States pension plan (the United States Plan) and our Canadian pension plans (the Canadian Plans), 

respectively. We determine discount rates by reference to rates of high-quality long-term corporate bonds 

with maturities that approximate the timing of future payments we anticipate making under each of the 

respective plans. Pension cost is charged to earnings and includes: 

•  Cost of pension plan benefits provided in exchange for employee services rendered during the 

year;

• 

Interest cost of pension plan obligations;

•  Expected return on pension plan assets;

•  Amortization of the prior service costs and amendments on a straight-line basis over the expected 

average remaining service period of the active employee group covered by the plans; and

•  Amortization of cumulative unrecognized net actuarial gains and losses in excess of 10% of the 

greater of the accrued benefit obligation or the fair value of plan assets, over the expected 

average remaining service life of the active employee group covered by the plans.

Actuarial gains and losses arise from the difference between the actual and expected rate of return on 

plan assets for that period or from changes in actuarial assumptions used to determine the accrued 

benefit obligation, including discount rate, changes in headcount or salary inflation experience. 

Pension plan assets are measured at fair value. The expected return on pension plan assets is 

determined using market related values and assumptions on the specific invested asset mix within the 

pension plans. The market related values reflect estimated return on investments consistent with long-

term historical averages for similar assets. 

For defined contribution plans, contributions made by Enbridge are expensed in the period in which the 

contribution occurs. 

We also provide OPEB other than pensions, including group health care and life insurance benefits for 

eligible retirees, their spouses and qualified dependents. The cost of such benefits is accrued during the 

years in which employees render service. 

The overfunded or underfunded status of defined benefit pension and OPEB plans is recognized as 

Deferred amounts and other assets, Accounts payable and other or Other long-term liabilities, on the 

Consolidated Statements of Financial Position. A plan’s funded status is measured as the difference 

between the fair value of plan assets and the plan’s projected benefit obligation. Any unrecognized 

actuarial gains and losses and prior service costs and credits that arise during the period are recognized 

as a component of OCI, net of tax. 

Certain regulated utility operations of Enbridge record regulatory adjustments to reflect the difference 

between pension expense and OPEB costs for accounting purposes and the pension expense and OPEB 

costs for ratemaking purposes. Offsetting regulatory assets or liabilities are recorded to the extent 

pension expense or OPEB costs are expected to be collected from or refunded to customers, 

respectively, in future rates. In the absence of rate regulation, regulatory balances would not be recorded 

and pension and OPEB costs would be charged to earnings and OCI on an accrual basis.

STOCK-BASED COMPENSATION
Incentive Stock Options (ISO) granted are recorded using the fair value method. Under this method, 
compensation expense is measured at the grant date based on the fair value of the ISO granted as 
calculated by the Black-Scholes-Merton model and is recognized on a straight-line basis over the shorter 
of the vesting period or the period to early retirement eligibility, with a corresponding credit to Additional 
paid-in capital. Balances in Additional paid-in capital are transferred to Share capital when the options are 
exercised. 

Restricted Stock Units (RSU) are cash settled awards for which the related liability is remeasured each 
reporting period. RSUs vest at the completion of a 35-month term. During the vesting term, compensation 
expense is recorded based on the number of units outstanding and the current market price of Enbridge’s 
shares with an offset to Accounts payable and other or to Other long-term liabilities. 

COMMITMENTS, CONTINGENCIES AND ENVIRONMENTAL LIABILITIES
We expense or capitalize, as appropriate, expenditures for ongoing compliance with environmental 
regulations that relate to past or current operations. We expense costs incurred for remediation of existing 
environmental contamination caused by past operations that do not benefit future periods by preventing 
or eliminating future contamination. We record liabilities for environmental matters when assessments 
indicate that remediation efforts are probable and the costs can be reasonably estimated. Estimates of 
environmental liabilities are based on currently available facts, existing technology and presently enacted 
laws and regulations taking into consideration the likely effects of inflation and other factors. These 
amounts also consider prior experience in remediating contaminated sites, other companies’ clean-up 
experience and data released by government organizations. Our estimates are subject to revision in 
future periods based on actual costs or new information and are included in Environmental liabilities and 
Other long-term liabilities in the Consolidated Statements of Financial Position at their undiscounted 
amounts. There is always a potential of incurring additional costs in connection with environmental 
liabilities due to variations in any or all of the categories described above, including modified or revised 
requirements from regulatory agencies, in addition to fines and penalties, as well as expenditures 
associated with litigation and settlement of claims. We evaluate recoveries from insurance coverage 
separately from the liability and, when recovery is probable, we record and report an asset separately 
from the associated liability in the Consolidated Statements of Financial Position. 

Liabilities for other commitments and contingencies are recognized when, after fully analyzing available 
information, we determine it is either probable that an asset has been impaired, or that a liability has been 
incurred, and the amount of impairment or loss can be reasonably estimated. When a range of probable 
loss can be estimated, we recognize the most likely amount, or if no amount is more likely than another, 
the minimum of the range of probable loss is accrued. We expense legal costs associated with loss 
contingencies as such costs are incurred.

3.  CHANGES IN ACCOUNTING POLICIES 

CHANGES IN ACCOUNTING POLICIES  
Goodwill 
We previously performed our annual goodwill impairment test on October 1 of each fiscal year. Beginning 
with the quarter ended December 31, 2017, we moved the annual goodwill impairment test from October 
1 to April 1 to better align with the preparation and review of our business plan, which is used in the test. 
The change does not delay, accelerate or avoid an impairment charge. 

ADOPTION OF NEW STANDARDS  
Simplifying the Measurement of Goodwill Impairment  
Effective January 1, 2017, we early adopted Accounting Standards Update (ASU) 2017-04 and applied 
the standard on a prospective basis. Under the new guidance, goodwill impairment will now be the 
amount by which a reporting unit’s carrying value exceeds its fair value; this amount should not exceed 

122

123

 
 
 
 
 
the carrying amount of goodwill. We applied this standard as at December 31, 2017 in the measurement 
of the goodwill impairment relating to the gas midstream reporting unit (Note 15). 

Clarifying the Definition of a Business in an Acquisition  
Effective January 1, 2017, we early adopted ASU 2017-01 on a prospective basis. The new standard was 
issued with the objective of adding guidance to assist entities with evaluating whether transactions should 
be accounted for as acquisitions (disposals) of assets or businesses. This accounting update was applied 
to acquisitions and dispositions that occurred in the year.  

Accounting for Intra-Entity Asset Transfers  
Effective January 1, 2017, we early adopted ASU 2016-16 on a modified retrospective basis. The new 
standard was issued with the intent of improving the accounting for the income tax consequences of intra-
entity asset transfers other than inventory. Under the new guidance, an entity should recognize the 
income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer 
occurs. The adoption of the pronouncement did not have a material impact on our consolidated financial 
statements. 

Improvements to Employee Share-Based Payment Accounting  
Effective January 1, 2017, we adopted ASU 2016-09 and applied certain amendments on a modified 
retrospective basis with the remaining amendments applied on a prospective basis. The new standard 
was issued with the intent of simplifying and improving several aspects of accounting for share-based 
payment transactions including the income tax consequences, classification of awards as either equity or 
liabilities, and classification on the statement of cash flows. The adoption of the pronouncement did not 
have a material impact on our consolidated financial statements.  

Simplifying the Embedded Derivatives Analysis for Debt Instruments  
Effective January 1, 2017, we adopted ASU 2016-06 on a modified retrospective basis. The new 
guidance simplifies the embedded derivative analysis for debt instruments containing contingent call or 
put options. The adoption of the pronouncement did not have a material impact on our consolidated 
financial statements.  

FUTURE ACCOUNTING POLICY CHANGES  
Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 
ASU 2018-02 was issued in February 2018 to address a specific consequence of the Tax Cuts and Jobs 
Act (TCJA). This accounting update allows a reclassification from accumulated other comprehensive 
income to retained earnings for stranded tax effects resulting from TCJA. The amendments eliminate the 
stranded tax effects that were created as a result of the reduction of historical U.S. federal corporate 
income tax rate to the newly enacted U.S. federal corporate income tax rate. The accounting update is 
effective January 1, 2019, with early adoption permitted, and is to be applied either in the period of 
adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate 
income tax rate in the TCJA is recognized. We are currently assessing the impact of the new standard on 
the consolidated financial statements.  

Improvements to Accounting for Hedging Activities 
ASU 2017-12 was issued in August 2017 with the objective of better aligning a company’s risk 
management activities and the resulting hedge accounting reflected in the financial statements. The 
accounting update allows cash flow hedging of contractually specified components in financial and non-
financial items. Under the new guidance, hedge ineffectiveness is no longer required to be measured and 
hedging instruments’ fair value changes will be recorded in the same income statement line as the 
hedged item. The ASU also allows the initial quantitative hedge effectiveness assessment to be 
performed at any time before the end of the quarter in which the hedge is designated. After initial 
quantitative testing is performed, an ongoing qualitative effectiveness assessment is permitted. The 
accounting update is effective January 1, 2019 and is to be applied on a modified retrospective basis. We 
are currently assessing the impact of the new standard on our consolidated financial statements. 

124

Clarifying Guidance on the Application of Modification Accounting on Stock Compensation 

ASU 2017-09 was issued in May 2017 with the intent to clarify the scope of modification accounting and 

Clarifying Guidance on the Application of Modification Accounting on Stock Compensation 

ASU 2017-09 was issued in May 2017 with the intent to clarify the scope of modification accounting and 

when it should be applied to a change to the terms or conditions of a share based payment award.   

when it should be applied to a change to the terms or conditions of a share based payment award.   

Under the new guidance, modification accounting is required for all changes to share based payment 

Under the new guidance, modification accounting is required for all changes to share based payment 

awards, unless all of the following are met: 1) there is no change to the fair value of the award, 2) the 

awards, unless all of the following are met: 1) there is no change to the fair value of the award, 2) the 

vesting conditions have not changed, and 3) the classification of the award as an equity instrument or a 

vesting conditions have not changed, and 3) the classification of the award as an equity instrument or a 

debt instrument has not changed. The accounting update is effective January 1, 2018 and will be applied 

debt instrument has not changed. The accounting update is effective January 1, 2018 and will be applied 

on a prospective basis. We do not expect the adoption of this accounting update to have a material 

on a prospective basis. We do not expect the adoption of this accounting update to have a material 

impact on our consolidated financial statements. 

impact on our consolidated financial statements. 

Amending the Amortization Period for Certain Callable Debt Securities Purchased at a Premium  

ASU 2017-08 was issued in March 2017 with the intent of shortening the amortization period to the 

Amending the Amortization Period for Certain Callable Debt Securities Purchased at a Premium  

ASU 2017-08 was issued in March 2017 with the intent of shortening the amortization period to the 

earliest call date for certain callable debt securities held at a premium. The accounting update is effective 

earliest call date for certain callable debt securities held at a premium. The accounting update is effective 

January 1, 2019 and will be applied on a modified retrospective basis. We are currently assessing the 

January 1, 2019 and will be applied on a modified retrospective basis. We are currently assessing the 

impact of the new standard on our consolidated financial statements. 

impact of the new standard on our consolidated financial statements. 

Improving the Presentation of Net Periodic Benefit Cost related to Defined Benefit Plans  

ASU 2017-07 was issued in March 2017 primarily to improve the income statement presentation of the 

Improving the Presentation of Net Periodic Benefit Cost related to Defined Benefit Plans  

ASU 2017-07 was issued in March 2017 primarily to improve the income statement presentation of the 

components of net periodic pension cost and net periodic postretirement benefit cost for an entity’s 

components of net periodic pension cost and net periodic postretirement benefit cost for an entity’s 

sponsored defined benefit pension and OPEB plans. In addition, only the service cost component of net 

sponsored defined benefit pension and OPEB plans. In addition, only the service cost component of net 

benefit cost is eligible for capitalization. The accounting update is effective January 1, 2018 and will be 

benefit cost is eligible for capitalization. The accounting update is effective January 1, 2018 and will be 

applied on a retrospective basis for the statement of earnings presentation component and a prospective 

applied on a retrospective basis for the statement of earnings presentation component and a prospective 

basis for the capitalization component. We do not expect the adoption of this accounting update to have a 

basis for the capitalization component. We do not expect the adoption of this accounting update to have a 

material impact on our consolidated financial statements.  

material impact on our consolidated financial statements.  

Clarifying Guidance on Derecognition and Partial Sales of Nonfinancial Assets  

ASU 2017-05 was issued in February 2017 with the intent of clarifying the scope of asset derecognition 

Clarifying Guidance on Derecognition and Partial Sales of Nonfinancial Assets  

ASU 2017-05 was issued in February 2017 with the intent of clarifying the scope of asset derecognition 

guidance and accounting for partial sales of nonfinancial assets. The ASU clarifies the scope provisions of 

guidance and accounting for partial sales of nonfinancial assets. The ASU clarifies the scope provisions of 

nonfinancial assets and how to allocate consideration to each distinct asset, and amends the guidance for 

nonfinancial assets and how to allocate consideration to each distinct asset, and amends the guidance for 

derecognition of a distinct nonfinancial asset in partial sale transactions. The accounting update is 

derecognition of a distinct nonfinancial asset in partial sale transactions. The accounting update is 

effective January 1, 2018 and will be applied on a modified retrospective basis. We do not expect the 

effective January 1, 2018 and will be applied on a modified retrospective basis. We do not expect the 

adoption of this accounting update to have a material impact on our consolidated financial statements.  

adoption of this accounting update to have a material impact on our consolidated financial statements.  

Clarifying the Presentation of Restricted Cash in the Statement of Cash Flows 

ASU 2016-18 was issued in November 2016 with the intent to clarify guidance on the classification and 

Clarifying the Presentation of Restricted Cash in the Statement of Cash Flows 

ASU 2016-18 was issued in November 2016 with the intent to clarify guidance on the classification and 

presentation of changes in restricted cash and restricted cash equivalents within the statement of cash 

presentation of changes in restricted cash and restricted cash equivalents within the statement of cash 

flows. The accounting update requires that changes in restricted cash and restricted cash equivalents be 

flows. The accounting update requires that changes in restricted cash and restricted cash equivalents be 

included within cash and cash equivalents when reconciling the opening and closing period amounts 

included within cash and cash equivalents when reconciling the opening and closing period amounts 

shown on the statement of cash flows. We currently present the changes in restricted cash and restricted 

shown on the statement of cash flows. We currently present the changes in restricted cash and restricted 

cash equivalents under investing activities in the Consolidated Statement of Cash Flows. The accounting 

cash equivalents under investing activities in the Consolidated Statement of Cash Flows. The accounting 

update is effective January 1, 2018 and will be applied on a retrospective basis. We will amend the 

update is effective January 1, 2018 and will be applied on a retrospective basis. We will amend the 

presentation in the Consolidated Statement of Cash Flows to include restricted cash and restricted cash 

presentation in the Consolidated Statement of Cash Flows to include restricted cash and restricted cash 

equivalents with cash and cash equivalents and we will retrospectively reclassify all periods presented. 

equivalents with cash and cash equivalents and we will retrospectively reclassify all periods presented. 

Simplifying Cash Flow Classification 

ASU 2016-15 was issued in August 2016 with the intent of reducing diversity in practice of how certain 

Simplifying Cash Flow Classification 

ASU 2016-15 was issued in August 2016 with the intent of reducing diversity in practice of how certain 

cash receipts and cash payments are classified in the Consolidated Statement of Cash Flows. The new 

cash receipts and cash payments are classified in the Consolidated Statement of Cash Flows. The new 

guidance addresses eight specific presentation issues. The accounting update is effective January 1, 

guidance addresses eight specific presentation issues. The accounting update is effective January 1, 

2018 and will be applied on a retrospective basis. We assessed each of the eight specific presentation 

2018 and will be applied on a retrospective basis. We assessed each of the eight specific presentation 

issues and the adoption of this ASU does not have a material impact on our consolidated financial 

issues and the adoption of this ASU does not have a material impact on our consolidated financial 

statements. 

statements. 

125

125

 
the carrying amount of goodwill. We applied this standard as at December 31, 2017 in the measurement 

of the goodwill impairment relating to the gas midstream reporting unit (Note 15). 

Clarifying the Definition of a Business in an Acquisition  

Effective January 1, 2017, we early adopted ASU 2017-01 on a prospective basis. The new standard was 

issued with the objective of adding guidance to assist entities with evaluating whether transactions should 

be accounted for as acquisitions (disposals) of assets or businesses. This accounting update was applied 

to acquisitions and dispositions that occurred in the year.  

Accounting for Intra-Entity Asset Transfers  

Effective January 1, 2017, we early adopted ASU 2016-16 on a modified retrospective basis. The new 

standard was issued with the intent of improving the accounting for the income tax consequences of intra-

entity asset transfers other than inventory. Under the new guidance, an entity should recognize the 

income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer 

occurs. The adoption of the pronouncement did not have a material impact on our consolidated financial 

statements. 

Improvements to Employee Share-Based Payment Accounting  

Effective January 1, 2017, we adopted ASU 2016-09 and applied certain amendments on a modified 

retrospective basis with the remaining amendments applied on a prospective basis. The new standard 

was issued with the intent of simplifying and improving several aspects of accounting for share-based 

payment transactions including the income tax consequences, classification of awards as either equity or 

liabilities, and classification on the statement of cash flows. The adoption of the pronouncement did not 

have a material impact on our consolidated financial statements.  

Simplifying the Embedded Derivatives Analysis for Debt Instruments  

Effective January 1, 2017, we adopted ASU 2016-06 on a modified retrospective basis. The new 

guidance simplifies the embedded derivative analysis for debt instruments containing contingent call or 

put options. The adoption of the pronouncement did not have a material impact on our consolidated 

financial statements.  

FUTURE ACCOUNTING POLICY CHANGES  

Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 

ASU 2018-02 was issued in February 2018 to address a specific consequence of the Tax Cuts and Jobs 

Act (TCJA). This accounting update allows a reclassification from accumulated other comprehensive 

income to retained earnings for stranded tax effects resulting from TCJA. The amendments eliminate the 

stranded tax effects that were created as a result of the reduction of historical U.S. federal corporate 

income tax rate to the newly enacted U.S. federal corporate income tax rate. The accounting update is 

effective January 1, 2019, with early adoption permitted, and is to be applied either in the period of 

adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate 

income tax rate in the TCJA is recognized. We are currently assessing the impact of the new standard on 

the consolidated financial statements.  

Improvements to Accounting for Hedging Activities 

ASU 2017-12 was issued in August 2017 with the objective of better aligning a company’s risk 

management activities and the resulting hedge accounting reflected in the financial statements. The 

accounting update allows cash flow hedging of contractually specified components in financial and non-

financial items. Under the new guidance, hedge ineffectiveness is no longer required to be measured and 

hedging instruments’ fair value changes will be recorded in the same income statement line as the 

hedged item. The ASU also allows the initial quantitative hedge effectiveness assessment to be 

performed at any time before the end of the quarter in which the hedge is designated. After initial 

quantitative testing is performed, an ongoing qualitative effectiveness assessment is permitted. The 

accounting update is effective January 1, 2019 and is to be applied on a modified retrospective basis. We 

are currently assessing the impact of the new standard on our consolidated financial statements. 

124

Clarifying Guidance on the Application of Modification Accounting on Stock Compensation 
ASU 2017-09 was issued in May 2017 with the intent to clarify the scope of modification accounting and 
Clarifying Guidance on the Application of Modification Accounting on Stock Compensation 
ASU 2017-09 was issued in May 2017 with the intent to clarify the scope of modification accounting and 
when it should be applied to a change to the terms or conditions of a share based payment award.   
Under the new guidance, modification accounting is required for all changes to share based payment 
when it should be applied to a change to the terms or conditions of a share based payment award.   
awards, unless all of the following are met: 1) there is no change to the fair value of the award, 2) the 
Under the new guidance, modification accounting is required for all changes to share based payment 
awards, unless all of the following are met: 1) there is no change to the fair value of the award, 2) the 
vesting conditions have not changed, and 3) the classification of the award as an equity instrument or a 
vesting conditions have not changed, and 3) the classification of the award as an equity instrument or a 
debt instrument has not changed. The accounting update is effective January 1, 2018 and will be applied 
on a prospective basis. We do not expect the adoption of this accounting update to have a material 
debt instrument has not changed. The accounting update is effective January 1, 2018 and will be applied 
impact on our consolidated financial statements. 
on a prospective basis. We do not expect the adoption of this accounting update to have a material 
impact on our consolidated financial statements. 
Amending the Amortization Period for Certain Callable Debt Securities Purchased at a Premium  
ASU 2017-08 was issued in March 2017 with the intent of shortening the amortization period to the 
Amending the Amortization Period for Certain Callable Debt Securities Purchased at a Premium  
earliest call date for certain callable debt securities held at a premium. The accounting update is effective 
ASU 2017-08 was issued in March 2017 with the intent of shortening the amortization period to the 
earliest call date for certain callable debt securities held at a premium. The accounting update is effective 
January 1, 2019 and will be applied on a modified retrospective basis. We are currently assessing the 
impact of the new standard on our consolidated financial statements. 
January 1, 2019 and will be applied on a modified retrospective basis. We are currently assessing the 
impact of the new standard on our consolidated financial statements. 
Improving the Presentation of Net Periodic Benefit Cost related to Defined Benefit Plans  
ASU 2017-07 was issued in March 2017 primarily to improve the income statement presentation of the 
Improving the Presentation of Net Periodic Benefit Cost related to Defined Benefit Plans  
ASU 2017-07 was issued in March 2017 primarily to improve the income statement presentation of the 
components of net periodic pension cost and net periodic postretirement benefit cost for an entity’s 
components of net periodic pension cost and net periodic postretirement benefit cost for an entity’s 
sponsored defined benefit pension and OPEB plans. In addition, only the service cost component of net 
benefit cost is eligible for capitalization. The accounting update is effective January 1, 2018 and will be 
sponsored defined benefit pension and OPEB plans. In addition, only the service cost component of net 
benefit cost is eligible for capitalization. The accounting update is effective January 1, 2018 and will be 
applied on a retrospective basis for the statement of earnings presentation component and a prospective 
applied on a retrospective basis for the statement of earnings presentation component and a prospective 
basis for the capitalization component. We do not expect the adoption of this accounting update to have a 
material impact on our consolidated financial statements.  
basis for the capitalization component. We do not expect the adoption of this accounting update to have a 
material impact on our consolidated financial statements.  
Clarifying Guidance on Derecognition and Partial Sales of Nonfinancial Assets  
ASU 2017-05 was issued in February 2017 with the intent of clarifying the scope of asset derecognition 
Clarifying Guidance on Derecognition and Partial Sales of Nonfinancial Assets  
ASU 2017-05 was issued in February 2017 with the intent of clarifying the scope of asset derecognition 
guidance and accounting for partial sales of nonfinancial assets. The ASU clarifies the scope provisions of 
nonfinancial assets and how to allocate consideration to each distinct asset, and amends the guidance for 
guidance and accounting for partial sales of nonfinancial assets. The ASU clarifies the scope provisions of 
derecognition of a distinct nonfinancial asset in partial sale transactions. The accounting update is 
nonfinancial assets and how to allocate consideration to each distinct asset, and amends the guidance for 
derecognition of a distinct nonfinancial asset in partial sale transactions. The accounting update is 
effective January 1, 2018 and will be applied on a modified retrospective basis. We do not expect the 
adoption of this accounting update to have a material impact on our consolidated financial statements.  
effective January 1, 2018 and will be applied on a modified retrospective basis. We do not expect the 
adoption of this accounting update to have a material impact on our consolidated financial statements.  
Clarifying the Presentation of Restricted Cash in the Statement of Cash Flows 
ASU 2016-18 was issued in November 2016 with the intent to clarify guidance on the classification and 
Clarifying the Presentation of Restricted Cash in the Statement of Cash Flows 
ASU 2016-18 was issued in November 2016 with the intent to clarify guidance on the classification and 
presentation of changes in restricted cash and restricted cash equivalents within the statement of cash 
presentation of changes in restricted cash and restricted cash equivalents within the statement of cash 
flows. The accounting update requires that changes in restricted cash and restricted cash equivalents be 
included within cash and cash equivalents when reconciling the opening and closing period amounts 
flows. The accounting update requires that changes in restricted cash and restricted cash equivalents be 
included within cash and cash equivalents when reconciling the opening and closing period amounts 
shown on the statement of cash flows. We currently present the changes in restricted cash and restricted 
shown on the statement of cash flows. We currently present the changes in restricted cash and restricted 
cash equivalents under investing activities in the Consolidated Statement of Cash Flows. The accounting 
cash equivalents under investing activities in the Consolidated Statement of Cash Flows. The accounting 
update is effective January 1, 2018 and will be applied on a retrospective basis. We will amend the 
presentation in the Consolidated Statement of Cash Flows to include restricted cash and restricted cash 
update is effective January 1, 2018 and will be applied on a retrospective basis. We will amend the 
equivalents with cash and cash equivalents and we will retrospectively reclassify all periods presented. 
presentation in the Consolidated Statement of Cash Flows to include restricted cash and restricted cash 
equivalents with cash and cash equivalents and we will retrospectively reclassify all periods presented. 
Simplifying Cash Flow Classification 
ASU 2016-15 was issued in August 2016 with the intent of reducing diversity in practice of how certain 
Simplifying Cash Flow Classification 
ASU 2016-15 was issued in August 2016 with the intent of reducing diversity in practice of how certain 
cash receipts and cash payments are classified in the Consolidated Statement of Cash Flows. The new 
cash receipts and cash payments are classified in the Consolidated Statement of Cash Flows. The new 
guidance addresses eight specific presentation issues. The accounting update is effective January 1, 
guidance addresses eight specific presentation issues. The accounting update is effective January 1, 
2018 and will be applied on a retrospective basis. We assessed each of the eight specific presentation 
issues and the adoption of this ASU does not have a material impact on our consolidated financial 
2018 and will be applied on a retrospective basis. We assessed each of the eight specific presentation 
statements. 
issues and the adoption of this ASU does not have a material impact on our consolidated financial 
statements. 

125
125

 
Accounting for Credit Losses  
ASU 2016-13 was issued in June 2016 with the intent of providing financial statement users with more 
useful information about the expected credit losses on financial instruments and other commitments to 
extend credit held by a reporting entity at each reporting date. Current treatment uses the incurred loss 
methodology for recognizing credit losses that delays the recognition until it is probable a loss has been 
incurred. The accounting update adds a new impairment model, known as the current expected credit 
loss model, which is based on expected losses rather than incurred losses. Under the new guidance, an 
entity recognizes as an allowance its estimate of expected credit losses, which the Financial Accounting 
Standards Board believes will result in more timely recognition of such losses. We are currently assessing 
the impact of the new standard on our consolidated financial statements. The accounting update is 
effective January 1, 2020.  

Recognition of Leases  
ASU 2016-02 was issued in February 2016 with the intent to increase transparency and comparability 
among organizations. It requires lessees of operating lease arrangements to recognize lease assets and 
lease liabilities on the statement of financial position and disclose additional key information about lease 
agreements. The accounting update also replaces the current definition of a lease and requires that an 
arrangement be recognized as a lease when a customer has the right to obtain substantially all of the 
economic benefits from the use of an asset, as well as the right to direct the use of the asset. We are 
currently gathering a complete inventory of our lease contracts in order to assess the impact of the new 
standard on our consolidated financial statements. The accounting update is effective January 1, 2019 
and will be applied using a modified retrospective approach. 

Recognition and Measurement of Financial Assets and Liabilities  
ASU 2016-01 was issued in January 2016 with the intent to address certain aspects of recognition, 
measurement, presentation and disclosure of financial assets and liabilities. Investments in equity 
securities, excluding equity method and consolidated investments, are no longer classified as trading or 
available-for-sale securities. All investments in equity securities with readily determinable fair values are 
classified as investments at fair value through net income. Investments in equity securities without readily 
determinable fair values are measured using the fair value measurement alternative and are recorded at 
cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly 
transactions for an identical or similar investment of the same issuer. Investments in equity securities 
measured using the fair value measurement alternative are reviewed for indicators of impairment each 
reporting period. Fair value of financial instruments for disclosure purposes is measured using exit price. 
The accounting update is effective January 1, 2018 and applied on a prospective basis. We do not expect 
the adoption of this accounting update to have a material impact on our consolidated financial statements. 

Revenue from Contracts with Customers  
ASU 2014-09 was issued in 2014 with the intent of significantly enhancing consistency and comparability 
of revenue recognition practices across entities and industries. The new standard establishes a single, 
principles-based five-step model to be applied to all contracts with customers and introduces new and 
enhanced disclosure requirements. It also requires the use of more estimates and judgments than the 
present standards in addition to additional disclosures. The new standard is effective January 1, 2018. 
The new standard permits either a full retrospective method of adoption with restatement of all prior 
periods presented, or a modified retrospective method with the cumulative effect of applying the new 
standard recognized as an adjustment to opening retained earnings in the period of adoption. We have 
decided to adopt the new standard using the modified retrospective method.  

We have reviewed our revenue contracts in order to evaluate the effect of the new standard on our 
revenue recognition practices. Based on our assessment to-date, the adoption of the new standard will 
have the following impact to our financial statements: 

•  A change in presentation in the Gas Distribution business related to payments to customers 
under the earnings sharing mechanism which are currently shown as an expense in the 

Consolidated Statements of Earnings. Under the new standard, these payments will be reflected 

as a reduction of revenue.  

•  Estimates of variable consideration, required under the new standard for certain Liquids 

Pipelines, Gas Transmission and Midstream and Green Power and Transmission revenue 

contracts as well as the allocation of the transaction price for certain Liquids Pipelines revenue 

contracts, may result in changes to the pattern or timing of revenue recognition for those 

contracts.  

•  Non-cash consideration received in the form of a percentage of the products derived from 

processing natural gas in the Gas Transmission and Midstream business was previously 

accounted for as revenue when the commodity was sold to third parties. Under the new standard, 

the non-cash consideration will be accounted for as revenue when processing services are 

performed. The commodity will continue to be accounted for as revenue when it is subsequently 

sold to third parties. The impact of this change will be an increase in costs and revenues due to 

the recognition of this non-cash consideration. 

•  Service fee revenue, from processing natural gas for certain contracts in the Gas Transmission 

and Midstream business whereby Enbridge purchases natural gas at the wellhead, then 

processes and subsequently sells the gas, was previously presented as revenue. Under the new 

standard, processing fees charged on natural gas purchased by Enbridge are presented as a 

reduction of commodity costs upon the transfer of control of the natural gas at the wellhead. 

•  Revenue from certain contracts in the Gas Transmission and Midstream business that provide for 

Enbridge to process and sell customers’ natural gas and retain a percentage of the resulting 

processed natural gas and/or NGLs as payment for processing services rendered, commonly 

referred to as Percentage of Proceeds and Percentage of Liquids contracts, was previously 

presented on a gross basis whereby Enbridge recorded one hundred percent of the value of the 

natural gas and products sold as revenue, with the cost of the natural gas purchased recorded as 

commodity cost. Under the new standard only Enbridge’s share of the products retained and sold 

is presented as revenue and no commodity cost is recorded.  

•  Certain payments received from customers to offset the cost of constructing assets required to 

provide services to those customers, referred to as Contributions in Aid of Construction (CIAC) 

were previously recorded as reductions of property, plant and equipment regardless of whether 

the amounts were imposed by regulation or negotiated. Under the new standard, negotiated 

CIACs are deemed to be advance payments for services and must be recognized as revenue 

when those future services are provided. Negotiated CIACs will be accounted for as deferred 

revenue and recognized over the term of the associated revenue contract.  

Upon adoption, we will recognize the significant cumulative effect of initially applying the new standard as 

an increase in the opening balance of retained deficit of approximately $120 million, an increase in 

property, plant and equipment of $130 million and an increase in deferred revenue of $120 million, subject 

to final determination, as at January 1, 2018. The adoption of the new standard will also result in changes 

in classification between Revenue and Commodity costs as discussed above. 

We have also developed and tested processes to generate the disclosures which will be required under 

the new standard commencing in the first quarter of 2018.  

126

127

Accounting for Credit Losses  

ASU 2016-13 was issued in June 2016 with the intent of providing financial statement users with more 

useful information about the expected credit losses on financial instruments and other commitments to 

extend credit held by a reporting entity at each reporting date. Current treatment uses the incurred loss 

methodology for recognizing credit losses that delays the recognition until it is probable a loss has been 

incurred. The accounting update adds a new impairment model, known as the current expected credit 

loss model, which is based on expected losses rather than incurred losses. Under the new guidance, an 

entity recognizes as an allowance its estimate of expected credit losses, which the Financial Accounting 

Standards Board believes will result in more timely recognition of such losses. We are currently assessing 

the impact of the new standard on our consolidated financial statements. The accounting update is 

effective January 1, 2020.  

Recognition of Leases  

ASU 2016-02 was issued in February 2016 with the intent to increase transparency and comparability 

among organizations. It requires lessees of operating lease arrangements to recognize lease assets and 

lease liabilities on the statement of financial position and disclose additional key information about lease 

agreements. The accounting update also replaces the current definition of a lease and requires that an 

arrangement be recognized as a lease when a customer has the right to obtain substantially all of the 

economic benefits from the use of an asset, as well as the right to direct the use of the asset. We are 

currently gathering a complete inventory of our lease contracts in order to assess the impact of the new 

standard on our consolidated financial statements. The accounting update is effective January 1, 2019 

and will be applied using a modified retrospective approach. 

Recognition and Measurement of Financial Assets and Liabilities  

ASU 2016-01 was issued in January 2016 with the intent to address certain aspects of recognition, 

measurement, presentation and disclosure of financial assets and liabilities. Investments in equity 

securities, excluding equity method and consolidated investments, are no longer classified as trading or 

available-for-sale securities. All investments in equity securities with readily determinable fair values are 

classified as investments at fair value through net income. Investments in equity securities without readily 

determinable fair values are measured using the fair value measurement alternative and are recorded at 

cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly 

transactions for an identical or similar investment of the same issuer. Investments in equity securities 

measured using the fair value measurement alternative are reviewed for indicators of impairment each 

reporting period. Fair value of financial instruments for disclosure purposes is measured using exit price. 

The accounting update is effective January 1, 2018 and applied on a prospective basis. We do not expect 

the adoption of this accounting update to have a material impact on our consolidated financial statements. 

Revenue from Contracts with Customers  

ASU 2014-09 was issued in 2014 with the intent of significantly enhancing consistency and comparability 

of revenue recognition practices across entities and industries. The new standard establishes a single, 

principles-based five-step model to be applied to all contracts with customers and introduces new and 

enhanced disclosure requirements. It also requires the use of more estimates and judgments than the 

present standards in addition to additional disclosures. The new standard is effective January 1, 2018. 

The new standard permits either a full retrospective method of adoption with restatement of all prior 

periods presented, or a modified retrospective method with the cumulative effect of applying the new 

standard recognized as an adjustment to opening retained earnings in the period of adoption. We have 

decided to adopt the new standard using the modified retrospective method.  

We have reviewed our revenue contracts in order to evaluate the effect of the new standard on our 

revenue recognition practices. Based on our assessment to-date, the adoption of the new standard will 

have the following impact to our financial statements: 

•  A change in presentation in the Gas Distribution business related to payments to customers 

under the earnings sharing mechanism which are currently shown as an expense in the 

Consolidated Statements of Earnings. Under the new standard, these payments will be reflected 
as a reduction of revenue.  

•  Estimates of variable consideration, required under the new standard for certain Liquids 

Pipelines, Gas Transmission and Midstream and Green Power and Transmission revenue 
contracts as well as the allocation of the transaction price for certain Liquids Pipelines revenue 
contracts, may result in changes to the pattern or timing of revenue recognition for those 
contracts.  

•  Non-cash consideration received in the form of a percentage of the products derived from 

processing natural gas in the Gas Transmission and Midstream business was previously 
accounted for as revenue when the commodity was sold to third parties. Under the new standard, 
the non-cash consideration will be accounted for as revenue when processing services are 
performed. The commodity will continue to be accounted for as revenue when it is subsequently 
sold to third parties. The impact of this change will be an increase in costs and revenues due to 
the recognition of this non-cash consideration. 

•  Service fee revenue, from processing natural gas for certain contracts in the Gas Transmission 

and Midstream business whereby Enbridge purchases natural gas at the wellhead, then 
processes and subsequently sells the gas, was previously presented as revenue. Under the new 
standard, processing fees charged on natural gas purchased by Enbridge are presented as a 
reduction of commodity costs upon the transfer of control of the natural gas at the wellhead. 
•  Revenue from certain contracts in the Gas Transmission and Midstream business that provide for 
Enbridge to process and sell customers’ natural gas and retain a percentage of the resulting 
processed natural gas and/or NGLs as payment for processing services rendered, commonly 
referred to as Percentage of Proceeds and Percentage of Liquids contracts, was previously 
presented on a gross basis whereby Enbridge recorded one hundred percent of the value of the 
natural gas and products sold as revenue, with the cost of the natural gas purchased recorded as 
commodity cost. Under the new standard only Enbridge’s share of the products retained and sold 
is presented as revenue and no commodity cost is recorded.  

•  Certain payments received from customers to offset the cost of constructing assets required to 
provide services to those customers, referred to as Contributions in Aid of Construction (CIAC) 
were previously recorded as reductions of property, plant and equipment regardless of whether 
the amounts were imposed by regulation or negotiated. Under the new standard, negotiated 
CIACs are deemed to be advance payments for services and must be recognized as revenue 
when those future services are provided. Negotiated CIACs will be accounted for as deferred 
revenue and recognized over the term of the associated revenue contract.  

Upon adoption, we will recognize the significant cumulative effect of initially applying the new standard as 
an increase in the opening balance of retained deficit of approximately $120 million, an increase in 
property, plant and equipment of $130 million and an increase in deferred revenue of $120 million, subject 
to final determination, as at January 1, 2018. The adoption of the new standard will also result in changes 
in classification between Revenue and Commodity costs as discussed above. 

We have also developed and tested processes to generate the disclosures which will be required under 
the new standard commencing in the first quarter of 2018.  

126

127

4.  SEGMENTED INFORMATION 

Effective December 31, 2017, we changed our segment-level profit measure to Earnings before interest, 
income taxes and depreciation and amortization from the previous measure of Earnings before interest 
and income taxes. We also renamed the Gas Pipelines and Processing segment to Gas Transmission 
and Midstream. The presentation of the prior years' tables has been revised in order to align with the 
current presentation.   

Segmented information for the years ended December 31, 2017, 2016 and 2015 are as follows:

Year ended December 31, 2017

(millions of Canadian dollars)
Revenues
Commodity and gas distribution

costs

Operating and administrative
Impairment of long-lived assets

Impairment of goodwill

Income/(loss) from equity

investments

Other income/(expense)
Earnings/(loss) before interest,
income tax expense, and
depreciation and amortization

Depreciation and amortization
Interest expense
Income tax recovery
Earnings
Capital expenditures1
Total assets

Year ended December 31, 2016

(millions of Canadian dollars)
Revenues
Commodity and gas distribution

costs

Operating and administrative
Impairment of long-lived assets

Income/(loss) from equity

investments

Other income/(expense)
Earnings/(loss) before interest,
income tax expense, and
depreciation and amortization

Depreciation and amortization
Interest expense
Income tax expense
Earnings
Capital expenditures1
Total assets

Gas
Transmission
and
Midstream

Liquids
Pipelines

Gas
Distribution

Green Power
and
Transmission

Energy
Services

Eliminations

and Other Consolidated

8,913

(18)

(2,949)
—

—

416

33

7,067

4,992

534

23,282

(2,834)

(1,756)
(4,463)
(102)

653

166

(2,689)

(960)
—

—

23

24

— (23,508)

(163)
—

—

6

(5)

(47)
—

—

8

2

(410)

412

(567)
—

—

(4)

232

6,395

(1,269)

1,390

372

(263)

(337)

2,799
63,881

4,016
60,745

1,177
25,956

321
6,289

1
2,514

108
2,708

44,378

(28,637)

(6,442)
(4,463)
(102)

1,102

452

6,288

(3,163)
(2,556)
2,697
3,266
8,422
162,093

Gas
Transmission
and
Midstream

Liquids
Pipelines

Gas
Distribution

Green Power
and
Transmission

Energy
Services

Eliminations

and Other Consolidated

8,176

(12)

(2,908)
(1,365)

194

841

4,926

2,877

2,976

502

20,364

(2,206)

(1,653)

5

(20,473)

(446)
(11)

223

27

464

(553)
—

12

49

831

(173)
—

2

8

(63)
—

(3)

(8)

(335)

334

(215)
—

—

115

344

(183)

(101)

3,957
52,007

176
11,182

713
10,132

251
5,571

—
1,951

32
4,366

34,560

(24,005)

(4,358)
(1,376)

428

1,032

6,281

(2,240)
(1,590)
(142)
2,309
5,129
85,209

Year ended December 31, 2015

Midstream

Distribution

Transmission

and Other Consolidated

Transmission

Gas

and

Liquids

Pipelines

Green Power

Gas

and

Energy

Services

Eliminations

(millions of Canadian dollars)

Revenues

costs

Commodity and gas distribution

Operating and administrative

Impairment of long-lived assets

Impairment of goodwill

Income/(loss) from equity

investments

Other income/(expense)

Earnings/(loss) before interest,

income tax expense, and

depreciation and amortization

Depreciation and amortization

Interest expense

Income tax expense

Loss

Capital expenditures1

3,803

3,609

498

20,842

(2,349)

(536)

—

—

(10)

49

4

(20,443)

(143)

—

—

2

2

(66)

—

—

(9)

—

5,589

(9)

(2,748)

(80)

—

296

(15)

3,033

(3,002)

(506)

(16)

(440)

200

4

43

(547)

558

(132)

—

—

(4)

(742)

763

363

324

(867)

33,794

(25,241)

(4,131)

(96)

(440)

475

(702)

3,659

(2,024)

(1,624)

(170)

(159)

7,275

1  Includes allowance for equity funds used during construction. 

5,884

385

858

68

—

80

The measurement basis for preparation of segmented information is consistent with the significant 

accounting policies (Note 2).

Our largest non-affiliated customer accounted for approximately 11.8%, 18.0%, and 21.8% of our third-

party revenues for the years ended December 31, 2017, 2016 and 2015, respectively. A second customer 

accounted for approximately 10.4% of our third-party revenues for the year ended December 31, 2016. A 

third customer accounted for approximately 10.8% of our third-party revenues for the year ended 

December 31, 2015. Revenues from these three customers are primarily reported in the Energy Services 

Earnings attributable to common shareholders for the year ended December 31, 2015 were increased by 

an out-of-period adjustment of $71 million in respect of an overstatement of deferred income tax expense 

segment.

OUT-OF-PERIOD ADJUSTMENT

in 2013 and 2014.

GEOGRAPHIC INFORMATION 

Revenues1

Year ended December 31,

(millions of Canadian dollars)

Canada

United States

Property, Plant and Equipment1

December 31,

(millions of Canadian dollars)

Canada

United States

1     Revenues are based on the country of origin of the product or service sold.

2017

2016

2015

18,076

26,302

44,378

12,470

22,090

34,560

11,087

22,707

33,794

2017

2016

46,025

44,686

90,711

32,008

32,276

64,284

128

129

 1     Amounts are based on the location where the assets are held.

 
 
 
 
 
 
 
 
 
 
4.  SEGMENTED INFORMATION 

Effective December 31, 2017, we changed our segment-level profit measure to Earnings before interest, 

income taxes and depreciation and amortization from the previous measure of Earnings before interest 

and income taxes. We also renamed the Gas Pipelines and Processing segment to Gas Transmission 

and Midstream. The presentation of the prior years' tables has been revised in order to align with the 

current presentation.   

Segmented information for the years ended December 31, 2017, 2016 and 2015 are as follows:

Transmission

Gas

and

Liquids

Pipelines

Green Power

Gas

and

Energy

Eliminations

Midstream

Distribution

Transmission

Services

and Other Consolidated

Year ended December 31, 2017

(millions of Canadian dollars)

Revenues

costs

Commodity and gas distribution

Operating and administrative

Impairment of long-lived assets

Impairment of goodwill

Income/(loss) from equity

investments

Other income/(expense)

Earnings/(loss) before interest,

income tax expense, and

depreciation and amortization

Depreciation and amortization

Interest expense

Income tax recovery

Earnings

Capital expenditures1

Total assets

Year ended December 31, 2016

(millions of Canadian dollars)

Revenues

costs

Commodity and gas distribution

Operating and administrative

Impairment of long-lived assets

Income/(loss) from equity

investments

Other income/(expense)

Earnings/(loss) before interest,

income tax expense, and

depreciation and amortization

Depreciation and amortization

Interest expense

Income tax expense

Earnings

Capital expenditures1

Total assets

8,913

(18)

(2,949)

—

—

416

33

7,067

4,992

534

23,282

(2,834)

(1,756)

(4,463)

(102)

653

166

(2,689)

(960)

—

—

23

24

— (23,508)

(163)

—

—

6

(5)

(47)

—

—

8

2

6,395

(1,269)

1,390

372

(263)

(337)

2,799

63,881

4,016

60,745

1,177

25,956

321

6,289

1

2,514

108

2,708

Transmission

Gas

and

Liquids

Pipelines

Green Power

Gas

and

Energy

Eliminations

Midstream

Distribution

Transmission

Services

and Other Consolidated

2,877

2,976

502

20,364

(1,653)

(553)

—

12

49

5

(20,473)

(173)

—

2

8

(63)

—

(3)

(8)

8,176

(12)

(2,908)

(1,365)

194

841

4,926

(2,206)

(446)

(11)

223

27

464

831

344

(183)

(101)

3,957

52,007

176

11,182

713

10,132

251

5,571

—

1,951

32

4,366

(410)

412

(567)

—

—

(4)

232

(335)

334

(215)

—

—

115

44,378

(28,637)

(6,442)

(4,463)

(102)

1,102

452

6,288

(3,163)

(2,556)

2,697

3,266

8,422

162,093

34,560

(24,005)

(4,358)

(1,376)

428

1,032

6,281

(2,240)

(1,590)

(142)

2,309

5,129

85,209

Gas
Transmission
and
Midstream

Liquids
Pipelines

Gas
Distribution

Green Power
and
Transmission

Energy
Services

Eliminations

and Other Consolidated

Year ended December 31, 2015

(millions of Canadian dollars)
Revenues
Commodity and gas distribution
costs
Operating and administrative
Impairment of long-lived assets
Impairment of goodwill
Income/(loss) from equity

investments

Other income/(expense)
Earnings/(loss) before interest,
income tax expense, and
depreciation and amortization

5,589

(9)

(2,748)
(80)
—

296

(15)

3,033

3,803

3,609

498

20,842

(3,002)

(2,349)

4

(20,443)

(506)
(16)
(440)

200

4

43

(536)
—
—

(10)

49

763

(143)
—
—

2

2

(66)
—
—

(9)

—

(547)

558

(132)
—
—

(4)

(742)

363

324

(867)

Depreciation and amortization
Interest expense
Income tax expense
Loss
Capital expenditures1
1  Includes allowance for equity funds used during construction. 

5,884

385

858

68

—

80

33,794

(25,241)

(4,131)
(96)
(440)

475

(702)

3,659

(2,024)
(1,624)
(170)
(159)
7,275

The measurement basis for preparation of segmented information is consistent with the significant 
accounting policies (Note 2).

Our largest non-affiliated customer accounted for approximately 11.8%, 18.0%, and 21.8% of our third-
party revenues for the years ended December 31, 2017, 2016 and 2015, respectively. A second customer 
accounted for approximately 10.4% of our third-party revenues for the year ended December 31, 2016. A 
third customer accounted for approximately 10.8% of our third-party revenues for the year ended 
December 31, 2015. Revenues from these three customers are primarily reported in the Energy Services 
segment.

OUT-OF-PERIOD ADJUSTMENT
Earnings attributable to common shareholders for the year ended December 31, 2015 were increased by 
an out-of-period adjustment of $71 million in respect of an overstatement of deferred income tax expense 
in 2013 and 2014.

GEOGRAPHIC INFORMATION 
Revenues1

Year ended December 31,
(millions of Canadian dollars)
Canada
United States

1     Revenues are based on the country of origin of the product or service sold.

Property, Plant and Equipment1

December 31,
(millions of Canadian dollars)
Canada
United States

 1     Amounts are based on the location where the assets are held.

2017

2016

2015

18,076
26,302
44,378

12,470
22,090
34,560

11,087
22,707
33,794

2017

2016

46,025
44,686
90,711

32,008
32,276
64,284

128

129

 
 
 
 
 
 
 
 
 
 
5.  EARNINGS PER COMMON SHARE 

BASIC
Earnings per common share is calculated by dividing earnings attributable to common shareholders by 
the weighted average number of common shares outstanding. The weighted average number of common 
shares outstanding has been reduced by our pro-rata weighted average interest in our own common 
shares of 13 million as at December 31, 2017 and 2016, and 12 million as at December 31, 2015 
resulting from our reciprocal investment in Noverco.

DILUTED
The treasury stock method is used to determine the dilutive impact of stock options. This method 
assumes any proceeds from the exercise of stock options would be used to purchase common shares at 
the average market price during the period.

Weighted average shares outstanding used to calculate basic and diluted earnings per share are as 
follows:

December 31,
(number of shares in millions)
Weighted average shares outstanding
Effect of dilutive options
Diluted weighted average shares outstanding

2017

1,525
7
1,532

2016

2015

911
7
918

847
—
847

For the years ended December 31, 2017, 2016 and 2015, 14,271,615, 10,803,672 and 36,005,043, 
respectively, of anti-dilutive stock options with a weighted average exercise price of $56.71, $52.92 and 
$40.26, respectively, were excluded from the diluted earnings per common share calculation.

6.  REGULATORY MATTERS 

GENERAL INFORMATION ON RATE REGULATION AND ITS ECONOMIC EFFECTS
We record assets and liabilities that result from the regulated ratemaking process that would not be 
recorded under GAAP for non-regulated entities. See Note 2 for further discussion. 

A number of our businesses are subject to regulation by the NEB. We also collect and set aside funds to 
cover future pipeline abandonment costs for all NEB regulated pipelines as a result of the NEB’s 
regulatory requirements under LMCI (Note 13). Amounts expected to be paid to cover future abandonment 
costs are recognized as long-term regulatory liabilities. Our significant regulated businesses and other 
related accounting impacts, are described below.

Liquids Pipelines
Canadian Mainline
Canadian Mainline includes the Canadian portion of the mainline system and is subject to regulation by 
the NEB. Canadian Mainline tolls (excluding Lines 8 and 9) are currently governed by the 10-year CTS, 
which establishes a Canadian Local Toll for all volumes shipped on the Canadian Mainline and an 
International Joint Tariff for all volumes shipped from western Canadian receipt points to delivery points 
on the Lakehead System and delivery points on the Canadian Mainline downstream of the Lakehead 
System. The CTS was negotiated with shippers in accordance with NEB guidelines, was approved by the 
NEB in June 2011 and took effect July 1, 2011. Under the CTS, a regulatory asset is recognized to offset 
deferred income taxes as a NEB rate order governing flow-through income tax treatment permits future 
recovery. No other material regulatory assets or liabilities are recognized under the terms of the CTS.

Southern Lights Pipeline

The United States portion of the Southern Lights Pipeline is regulated by the FERC and the Canadian 

portion of the Southern Lights Pipeline is regulated by the NEB. Shippers on the Southern Lights Pipeline 

are subject to long-term transportation contracts under a cost-of-service toll methodology. Toll 

adjustments are filed annually with the regulators. Tariffs provide for recovery of allowable operating and 

debt financing costs, plus a pre-determined after-tax rate of return on equity (ROE) of 10%. Southern 

Lights Pipeline tolls are based on a deemed 70% debt and 30% equity structure.

Gas Transmission and Midstream

British Columbia Pipeline and British Columbia Field Services 

Under the current NEB-authorized rate structure, income tax costs are recovered in tolls based on the 

current income tax payable and do not include accruals for deferred income tax. However, as income 

taxes become payable as a result of the reversal of timing differences that created the deferred income 

taxes, it is expected that transportation and field services tolls will be adjusted to recover these taxes. 

Since most of these timing differences are related to property, plant and equipment costs, this recovery is 

expected to occur over the life of those assets.

Spectra Energy Partners, LP

SEP's gas transmission and storage services are regulated by the FERC. Current rates are governed by 

the applicable FERC-approved natural gas tariff while fee-based gathering services are governed by the 

applicable state oil and gas commissions.

For information related to regulatory assets acquired in the Merger Transaction for Union Gas, British 

Columbia (BC) Pipelines, BC Field Services and SEP, refer to Note 7 - Acquisitions and Dispositions.

Gas Distribution

Enbridge Gas Distribution Inc.

EGD’s gas distribution operations are regulated by the OEB. Rates for the years ended December 31, 

2017 and 2016 were set in accordance with parameters established by the customized incentive rate plan 

(IR Plan). The customized IR Plan, inclusive of the requested capital investment amounts and an 

incentive mechanism providing the opportunity to earn above the allowed ROE, was approved, with 

modifications, by the OEB in 2014. The approved customized IR Plan is for establishing rates for 2014 

through 2018.

As part of the customized IR Plan, the OEB approved the adoption of a new approach for determining net 

salvage percentages to be included within EGD’s approved depreciation rates, as compared with the 

traditional approach previously employed. The new approach results in lower net salvage percentages for 

EGD, and therefore lowers depreciation rates and future removal and site restoration reserves. The 

customized IR Plan also includes an earnings sharing mechanism, whereby any return over the allowed 

rate of return for a given year under the customized IR Plan will be shared equally with customers. Within 

annual rate proceedings for 2015 through 2018, the customized requires allowed revenues, and 

corresponding rates, to be updated annually for select items.

EGD’s after-tax rate of return on common equity embedded in rates was 8.8% and 9.2% for the years 

ended December 31, 2017 and 2016, respectively, based on a 36% deemed common equity component 

of capital for regulatory purposes, in both years.

Union Gas Limited

Union Gas is regulated by the OEB. Union Gas's distribution rates beginning January 1, 2014 are set 

under a five-year incentive regulation framework. The incentive regulation framework establishes new 

rates at the beginning of each year through the use of a pricing formula rather than through the 

examination of revenue and cost forecasts.

130

131

 
 
 
 
 
 
 
 
5.  EARNINGS PER COMMON SHARE 

BASIC

DILUTED

Earnings per common share is calculated by dividing earnings attributable to common shareholders by 

the weighted average number of common shares outstanding. The weighted average number of common 

shares outstanding has been reduced by our pro-rata weighted average interest in our own common 

shares of 13 million as at December 31, 2017 and 2016, and 12 million as at December 31, 2015 

resulting from our reciprocal investment in Noverco.

The treasury stock method is used to determine the dilutive impact of stock options. This method 

assumes any proceeds from the exercise of stock options would be used to purchase common shares at 

the average market price during the period.

Weighted average shares outstanding used to calculate basic and diluted earnings per share are as 

follows:

December 31,

(number of shares in millions)

Weighted average shares outstanding

Effect of dilutive options

Diluted weighted average shares outstanding

2017

1,525

7

1,532

2016

2015

911

7

918

847

—

847

For the years ended December 31, 2017, 2016 and 2015, 14,271,615, 10,803,672 and 36,005,043, 

respectively, of anti-dilutive stock options with a weighted average exercise price of $56.71, $52.92 and 

$40.26, respectively, were excluded from the diluted earnings per common share calculation.

6.  REGULATORY MATTERS 

GENERAL INFORMATION ON RATE REGULATION AND ITS ECONOMIC EFFECTS

We record assets and liabilities that result from the regulated ratemaking process that would not be 

recorded under GAAP for non-regulated entities. See Note 2 for further discussion. 

A number of our businesses are subject to regulation by the NEB. We also collect and set aside funds to 

cover future pipeline abandonment costs for all NEB regulated pipelines as a result of the NEB’s 

regulatory requirements under LMCI (Note 13). Amounts expected to be paid to cover future abandonment 

costs are recognized as long-term regulatory liabilities. Our significant regulated businesses and other 

related accounting impacts, are described below.

Liquids Pipelines

Canadian Mainline

Canadian Mainline includes the Canadian portion of the mainline system and is subject to regulation by 

the NEB. Canadian Mainline tolls (excluding Lines 8 and 9) are currently governed by the 10-year CTS, 

which establishes a Canadian Local Toll for all volumes shipped on the Canadian Mainline and an 

International Joint Tariff for all volumes shipped from western Canadian receipt points to delivery points 

on the Lakehead System and delivery points on the Canadian Mainline downstream of the Lakehead 

System. The CTS was negotiated with shippers in accordance with NEB guidelines, was approved by the 

NEB in June 2011 and took effect July 1, 2011. Under the CTS, a regulatory asset is recognized to offset 

deferred income taxes as a NEB rate order governing flow-through income tax treatment permits future 

recovery. No other material regulatory assets or liabilities are recognized under the terms of the CTS.

Southern Lights Pipeline
The United States portion of the Southern Lights Pipeline is regulated by the FERC and the Canadian 
portion of the Southern Lights Pipeline is regulated by the NEB. Shippers on the Southern Lights Pipeline 
are subject to long-term transportation contracts under a cost-of-service toll methodology. Toll 
adjustments are filed annually with the regulators. Tariffs provide for recovery of allowable operating and 
debt financing costs, plus a pre-determined after-tax rate of return on equity (ROE) of 10%. Southern 
Lights Pipeline tolls are based on a deemed 70% debt and 30% equity structure.

Gas Transmission and Midstream
British Columbia Pipeline and British Columbia Field Services 
Under the current NEB-authorized rate structure, income tax costs are recovered in tolls based on the 
current income tax payable and do not include accruals for deferred income tax. However, as income 
taxes become payable as a result of the reversal of timing differences that created the deferred income 
taxes, it is expected that transportation and field services tolls will be adjusted to recover these taxes. 
Since most of these timing differences are related to property, plant and equipment costs, this recovery is 
expected to occur over the life of those assets.

Spectra Energy Partners, LP
SEP's gas transmission and storage services are regulated by the FERC. Current rates are governed by 
the applicable FERC-approved natural gas tariff while fee-based gathering services are governed by the 
applicable state oil and gas commissions.

For information related to regulatory assets acquired in the Merger Transaction for Union Gas, British 
Columbia (BC) Pipelines, BC Field Services and SEP, refer to Note 7 - Acquisitions and Dispositions.

Gas Distribution
Enbridge Gas Distribution Inc.
EGD’s gas distribution operations are regulated by the OEB. Rates for the years ended December 31, 
2017 and 2016 were set in accordance with parameters established by the customized incentive rate plan 
(IR Plan). The customized IR Plan, inclusive of the requested capital investment amounts and an 
incentive mechanism providing the opportunity to earn above the allowed ROE, was approved, with 
modifications, by the OEB in 2014. The approved customized IR Plan is for establishing rates for 2014 
through 2018.

As part of the customized IR Plan, the OEB approved the adoption of a new approach for determining net 
salvage percentages to be included within EGD’s approved depreciation rates, as compared with the 
traditional approach previously employed. The new approach results in lower net salvage percentages for 
EGD, and therefore lowers depreciation rates and future removal and site restoration reserves. The 
customized IR Plan also includes an earnings sharing mechanism, whereby any return over the allowed 
rate of return for a given year under the customized IR Plan will be shared equally with customers. Within 
annual rate proceedings for 2015 through 2018, the customized requires allowed revenues, and 
corresponding rates, to be updated annually for select items.

EGD’s after-tax rate of return on common equity embedded in rates was 8.8% and 9.2% for the years 
ended December 31, 2017 and 2016, respectively, based on a 36% deemed common equity component 
of capital for regulatory purposes, in both years.

Union Gas Limited
Union Gas is regulated by the OEB. Union Gas's distribution rates beginning January 1, 2014 are set 
under a five-year incentive regulation framework. The incentive regulation framework establishes new 
rates at the beginning of each year through the use of a pricing formula rather than through the 
examination of revenue and cost forecasts.

130

131

 
 
 
 
 
 
 
 
The incentive regulation framework includes an earnings sharing mechanism that permits Union Gas to 
fully retain the return on common equity from utility operations up to 9.93%, share 50% of any earnings 
between 9.93% and 10.93% with customers, and share 90% of any earnings above 10.93% with 
customers. Union Gas's approved after-tax return on common equity is fixed at 8.93% for the five-year 
incentive regulation term.

Enbridge Gas New Brunswick Inc.
Enbridge Gas New Brunswick Inc. is regulated by the EUB. The current rates are set, as prescribed by 
legislation for 2018 and 2019. In 2020 all rates will be set by cost-of-service methodology.

FINANCIAL STATEMENT EFFECTS
Accounting for rate-regulated activities has resulted in the recognition of the following significant 
regulatory assets and liabilities:

December 31,
(millions of Canadian dollars)
Regulatory assets/(liabilities)
Liquids Pipelines

Deferred income taxes
Tolling deferrals
Recoverable income taxes
Pipeline future abandonment costs1
Gas Transmission and Midstream

Deferred income taxes
Regulatory liability related to income taxes2
Other

Gas Distribution

Deferred income taxes
Purchased gas variance3
Pension plans and OPEB4
Constant dollar net salvage adjustment
Future removal and site restoration reserves
Site restoration clearance adjustment
Other

Recovery/Refund
Period Ends

2017

2016

Various
2018
Through 2030
Various

Various
Various
Various

Various
Various
Various
2018
Various
Various
Various

1,492
(34)
46
(141)

717
(1,078)
(16)

1,000
51
102
38
(1,066)
(31)
31

1,270
(37)
51
(88)

—
—
—

385
5
116
38
(606)
(109)
(4)

1  Funds collected are included in Restricted long-term investments (Note 13).
2  Relates to the establishment of a regulatory liability as a result of the United States tax reform legislation dated December 22, 

2017.

3  Purchase gas variance is the difference between the actual cost and the approved cost of natural gas reflected in rates. EGD and 
Union Gas have been granted OEB approval to refund this balance to, or to collect this balance from, customers on a rolling 12-
month basis via the Quarterly Rate Adjustment Mechanism process.
4  The balances are excluded from the rate base and do not earn an ROE.

OTHER ITEMS AFFECTED BY RATE REGULATION
Allowance for Funds Used During Construction and Other Capitalized Costs
Under the pool method prescribed by certain regulators, it is not possible to identify the carrying value of 
the equity component of AFUDC or its effect on depreciation. Similarly, gains and losses on the retirement 
of certain specific fixed assets in any given year cannot be identified or quantified.

Operating Cost Capitalization
With the approval of regulators, certain operations capitalize a percentage of specified operating costs. 
These operations are authorized to charge depreciation and earn a return on the net book value of such 
capitalized costs in future years. In the absence of rate regulation, a portion of such operating costs would 
be charged to earnings in the year incurred.

EGD entered into a services contract relating to asset management initiatives. The majority of the costs, 

primarily consulting fees, are being capitalized to gas mains in accordance with regulatory approval. As at 

December 31, 2017 and 2016, the net book value of these costs included in gas mains in Property, plant 

and equipment, net was $118 million and $125 million, respectively. In the absence of rate regulation 

accounting, some of these costs would be charged to earnings in the year incurred. 

7.  ACQUISITIONS AND DISPOSITIONS 

ACQUISITIONS

Spectra Energy Corp

On February 27, 2017, Enbridge and Spectra Energy combined in the Merger Transaction for a purchase 

price of $37.5 billion. Under the terms of the Merger Transaction, Spectra Energy shareholders received 

0.984 shares of Enbridge for each share of Spectra Energy common stock that they owned, giving us 

100% ownership of Spectra Energy.

Consideration offered to complete the Merger Transaction included 691 million common shares of 

Enbridge at US$41.34 per share, based on the February 24, 2017 closing price on the New York Stock 

Exchange (NYSE), for a total value of $37,429 million in common shares issued to Spectra Energy 

shareholders, plus approximately $3 million in cash in lieu of any fractional shares, and 3.5 million share 

options with a fair value of $77 million, that were exchanged for Spectra Energy’s outstanding stock 

compensation awards.

Spectra Energy, through its subsidiaries and equity affiliates, owns and operates a large and diversified 

portfolio of complementary natural gas-related energy assets and is one of North America’s leading 

natural gas infrastructure companies. Spectra Energy also owns and operates a crude oil pipeline system 

that connects Canadian and United States producers to refineries in the United States Rocky Mountain 

and Midwest regions. The combination brings together two highly complementary platforms to create 

North America’s largest energy infrastructure company and meaningfully enhances customer optionality, 

positioning us for long-term growth opportunities, and strengthening our balance sheet.

The Merger Transaction has been accounted for as a business combination under the acquisition method 

of accounting as prescribed by Accounting Standards Codification (ASC) 805 Business Combinations. 

The acquired tangible and intangible assets and assumed liabilities are recorded at their estimated fair 

values at the date of acquisition.

The purchase price allocation has been completed as at December 31, 2017, along with the allocation of 

goodwill to reporting units (Note 15). Our reporting units are equivalent to our identified segments with the 

exception of the Gas Transmission and Midstream segment, which is composed of two reporting units: 

gas transmission and gas midstream. 

132

133

 
 
 
 
 
 
 
 
 
 
 
 
The incentive regulation framework includes an earnings sharing mechanism that permits Union Gas to 

fully retain the return on common equity from utility operations up to 9.93%, share 50% of any earnings 

between 9.93% and 10.93% with customers, and share 90% of any earnings above 10.93% with 

customers. Union Gas's approved after-tax return on common equity is fixed at 8.93% for the five-year 

incentive regulation term.

Enbridge Gas New Brunswick Inc.

Enbridge Gas New Brunswick Inc. is regulated by the EUB. The current rates are set, as prescribed by 

legislation for 2018 and 2019. In 2020 all rates will be set by cost-of-service methodology.

Accounting for rate-regulated activities has resulted in the recognition of the following significant 

FINANCIAL STATEMENT EFFECTS

regulatory assets and liabilities:

December 31,

(millions of Canadian dollars)

Regulatory assets/(liabilities)

Liquids Pipelines

Deferred income taxes

Tolling deferrals

Recoverable income taxes

Pipeline future abandonment costs1

Gas Transmission and Midstream

Deferred income taxes

Regulatory liability related to income taxes2

Other

Gas Distribution

Deferred income taxes

Purchased gas variance3

Pension plans and OPEB4

Constant dollar net salvage adjustment

Future removal and site restoration reserves

Site restoration clearance adjustment

Recovery/Refund

Period Ends

2017

2016

Various

2018

Through 2030

Various

Various

Various

Various

Various

Various

Various

2018

Various

Various

Various

1,492

(34)

46

(141)

717

(1,078)

(16)

1,000

51

102

38

(1,066)

(31)

31

1,270

(37)

51

(88)

—

—

—

385

5

116

38

(606)

(109)

(4)

Other

2017.

1  Funds collected are included in Restricted long-term investments (Note 13).

2  Relates to the establishment of a regulatory liability as a result of the United States tax reform legislation dated December 22, 

3  Purchase gas variance is the difference between the actual cost and the approved cost of natural gas reflected in rates. EGD and 

Union Gas have been granted OEB approval to refund this balance to, or to collect this balance from, customers on a rolling 12-

month basis via the Quarterly Rate Adjustment Mechanism process.

4  The balances are excluded from the rate base and do not earn an ROE.

OTHER ITEMS AFFECTED BY RATE REGULATION

Allowance for Funds Used During Construction and Other Capitalized Costs

Under the pool method prescribed by certain regulators, it is not possible to identify the carrying value of 

the equity component of AFUDC or its effect on depreciation. Similarly, gains and losses on the retirement 

of certain specific fixed assets in any given year cannot be identified or quantified.

Operating Cost Capitalization

With the approval of regulators, certain operations capitalize a percentage of specified operating costs. 

These operations are authorized to charge depreciation and earn a return on the net book value of such 

capitalized costs in future years. In the absence of rate regulation, a portion of such operating costs would 

be charged to earnings in the year incurred.

EGD entered into a services contract relating to asset management initiatives. The majority of the costs, 
primarily consulting fees, are being capitalized to gas mains in accordance with regulatory approval. As at 
December 31, 2017 and 2016, the net book value of these costs included in gas mains in Property, plant 
and equipment, net was $118 million and $125 million, respectively. In the absence of rate regulation 
accounting, some of these costs would be charged to earnings in the year incurred. 

7.  ACQUISITIONS AND DISPOSITIONS 

ACQUISITIONS
Spectra Energy Corp
On February 27, 2017, Enbridge and Spectra Energy combined in the Merger Transaction for a purchase 
price of $37.5 billion. Under the terms of the Merger Transaction, Spectra Energy shareholders received 
0.984 shares of Enbridge for each share of Spectra Energy common stock that they owned, giving us 
100% ownership of Spectra Energy.

Consideration offered to complete the Merger Transaction included 691 million common shares of 
Enbridge at US$41.34 per share, based on the February 24, 2017 closing price on the New York Stock 
Exchange (NYSE), for a total value of $37,429 million in common shares issued to Spectra Energy 
shareholders, plus approximately $3 million in cash in lieu of any fractional shares, and 3.5 million share 
options with a fair value of $77 million, that were exchanged for Spectra Energy’s outstanding stock 
compensation awards.

Spectra Energy, through its subsidiaries and equity affiliates, owns and operates a large and diversified 
portfolio of complementary natural gas-related energy assets and is one of North America’s leading 
natural gas infrastructure companies. Spectra Energy also owns and operates a crude oil pipeline system 
that connects Canadian and United States producers to refineries in the United States Rocky Mountain 
and Midwest regions. The combination brings together two highly complementary platforms to create 
North America’s largest energy infrastructure company and meaningfully enhances customer optionality, 
positioning us for long-term growth opportunities, and strengthening our balance sheet.

The Merger Transaction has been accounted for as a business combination under the acquisition method 
of accounting as prescribed by Accounting Standards Codification (ASC) 805 Business Combinations. 
The acquired tangible and intangible assets and assumed liabilities are recorded at their estimated fair 
values at the date of acquisition.

The purchase price allocation has been completed as at December 31, 2017, along with the allocation of 
goodwill to reporting units (Note 15). Our reporting units are equivalent to our identified segments with the 
exception of the Gas Transmission and Midstream segment, which is composed of two reporting units: 
gas transmission and gas midstream. 

132

133

 
 
 
 
 
 
 
 
 
 
 
 
The following table summarizes the estimated fair values that were assigned to the net assets of Spectra 
Energy:

February 27,
(millions of Canadian dollars)
Fair value of net assets acquired:

Current assets (a)
Property, plant and equipment, net (b)
Restricted long-term investments
Long-term investments (c)
Deferred amounts and other assets (d)
Intangible assets, net (e)
Current liabilities (a)
Long-term debt (d)
Other long-term liabilities
Deferred income taxes (b)
Noncontrolling interests (f)

Goodwill (g)

Purchase price:

Common shares
Cash
Fair value of outstanding earned stock compensation awards recorded

in Additional paid-in capital

2017

2,432
33,555
144
5,000
2,390
1,288
(3,982)
(21,444)
(1,983)
(7,670)
(8,877)
853
36,656
37,509

37,429
3

77
37,509

a)              Accounts receivable is comprised primarily of customer trade receivables and natural gas 

imbalances. As such, the fair value of accounts receivable approximates the net carrying value of 
$1,174 million. The gross amount due of $1,190 million, of which $16 million is not expected to be 
collected, is included in current assets.

During the fourth quarter of 2017, we identified certain transactions that were not reflected in the 
purchase price equation. This resulted in a $67 million and $548 million increase in current assets 
and current liabilities, respectively, and a $481 million decrease in long-term debt.

b)             We have applied the valuation methodologies described in ASC 820 Fair Value Measurements 

and Disclosures, to value the property, plant and equipment purchased. The fair value of Spectra 
Energy’s rate-regulated property, plant and equipment was determined using a market participant 
perspective, which is their carrying amount. The fair value of the remaining non-regulated property, 
plant and equipment was determined primarily using variations of the income approach, which is 
based on the present value of the future after-tax cash flows attributable to each non-regulated 
asset. Some of the more significant assumptions inherent in the development of the values, from 
the perspective of a market participant, include, but are not limited to, the amount and timing of 
projected future cash flows (including revenue and profitability); the discount rate selected to 
measure the risks inherent in the future cash flows; the assessment of the asset’s life cycle; the 
competitive trends impacting the asset; and customer turnover.

During the third quarter of 2017, Spectra Energy's right-of-way agreements were reclassified from 
intangible assets to property, plant and equipment to conform the presentation of these 
agreements with our accounting policy pertaining to rights-of-way. The purchase price allocation 
above reflects this reclassification, which amounted to $830 million as at February 27, 2017. There 
is no change in the amortization period for the right-of-way agreements as a result of this 
reclassification.

During the fourth quarter of 2017, we finalized our fair value measurement of the BC Pipeline & 

Field Services businesses, which resulted in decreases to property, plant and equipment of $1,955 

million and deferred income tax liabilities of $661 million as at February 27, 2017. 

c)            Long-term investments represent Spectra Energy’s 50% equity investment in DCP Midstream, 

Gulfstream Natural Gas System, L.L.C., Nexus Gas Transmission, LLC (Nexus), Steckman Ridge 

LP, Islander East Pipeline Company, L.L.C., Southeast Supply Header L.L.C., and 20% equity 

interest in PennEast Pipeline Company LLC (PennEast). The fair value of these investments was 

determined using an income approach.

d)     Fair value of long-term debt was determined based on the current underlying Government of 

Canada and United States Treasury interest rates on the corresponding bonds, as well as an 

implied credit spread based on current market conditions and resulted in an increase in the book 

value of debt of $1.5 billion. The fair value adjustment to long-term debt related to rate-regulated 

entities of $629 million also results in a regulatory offset in Deferred amounts and other assets in 

the Consolidated Statements of Financial Position.

During the fourth quarter of 2017, deferred amounts and other assets decreased by $530 million 

as at February 27, 2017 due to the finalization of BC Pipelines & Field Services' fair value 

measurement, as discussed under (b) above.

During the fourth quarter of 2017, we identified certain transactions that were not reflected in the 

purchase price equation. This resulted in a $481 million decrease in long-term debt, as discussed 

under (a) above.

e)            Intangible assets primarily consist of customer relationships in the non-regulated business, which 

represent the underlying relationship from long-term agreements with customers that are 

capitalized upon acquisition, determined using the income approach. Intangible assets are 

amortized on a straight-line basis over their expected lives. 

During the third quarter of 2017, intangible assets decreased by $830 million as at February 27, 

2017 due to a reclassification to property, plant and equipment, as discussed under (b) above.

The fair value of intangible assets acquired through the Merger Transaction, by major classes is as 

follows: 

As at February 27, 2017

(millions of Canadian dollars)

Customer relationships1

Project agreement2

Software

Other

Weighted Average

Amortization Rate

3.7%

4.0%

11.1%

4.2%

Fair

Value

739

105

329

115

1,288

1  Represents customer relationships in the non-regulated business, which were capitalized upon acquisition. 

2  Represents a project agreement between SEP, NextEra Energy, Inc., Duke Energy Corporation (Duke Energy) and 

Williams Partners L.P. In accordance with the agreement, payments will be made, based on our proportional ownership 

interest in Sabal Trail Transmission, LLC (Sabal Trail), as certain milestones of the project are met. Amortization of the 

intangible asset began on July 3, 2017, when Sabal Trail was placed into service (Note 12).

f)               The fair value of Spectra Energy’s noncontrolling interests includes approximately 78.4 million 

SEP common units outstanding to the public, valued at the February 24, 2017 closing price of US

$44.88 per common unit on the NYSE, and units held by third parties in Maritimes & Northeast 

Pipeline, L.L.C., Sabal Trail and Algonquin Gas Transmission, L.L.C., valued based on the 

134

135

 
   
 
 
   
 
2017

2,432

33,555

144

5,000

2,390

1,288

(3,982)

(21,444)

(1,983)

(7,670)

(8,877)

853

36,656

37,509

37,429

3

77

37,509

The following table summarizes the estimated fair values that were assigned to the net assets of Spectra 

Energy:

February 27,

(millions of Canadian dollars)

Fair value of net assets acquired:

Current assets (a)

Property, plant and equipment, net (b)

Restricted long-term investments

Long-term investments (c)

Deferred amounts and other assets (d)

Intangible assets, net (e)

Current liabilities (a)

Long-term debt (d)

Other long-term liabilities

Deferred income taxes (b)

Noncontrolling interests (f)

Goodwill (g)

Purchase price:

Common shares

Cash

Fair value of outstanding earned stock compensation awards recorded

in Additional paid-in capital

a)              Accounts receivable is comprised primarily of customer trade receivables and natural gas 

imbalances. As such, the fair value of accounts receivable approximates the net carrying value of 

$1,174 million. The gross amount due of $1,190 million, of which $16 million is not expected to be 

collected, is included in current assets.

During the fourth quarter of 2017, we identified certain transactions that were not reflected in the 

purchase price equation. This resulted in a $67 million and $548 million increase in current assets 

and current liabilities, respectively, and a $481 million decrease in long-term debt.

b)             We have applied the valuation methodologies described in ASC 820 Fair Value Measurements 

and Disclosures, to value the property, plant and equipment purchased. The fair value of Spectra 

Energy’s rate-regulated property, plant and equipment was determined using a market participant 

perspective, which is their carrying amount. The fair value of the remaining non-regulated property, 

plant and equipment was determined primarily using variations of the income approach, which is 

based on the present value of the future after-tax cash flows attributable to each non-regulated 

asset. Some of the more significant assumptions inherent in the development of the values, from 

the perspective of a market participant, include, but are not limited to, the amount and timing of 

projected future cash flows (including revenue and profitability); the discount rate selected to 

measure the risks inherent in the future cash flows; the assessment of the asset’s life cycle; the 

competitive trends impacting the asset; and customer turnover.

During the third quarter of 2017, Spectra Energy's right-of-way agreements were reclassified from 

intangible assets to property, plant and equipment to conform the presentation of these 

agreements with our accounting policy pertaining to rights-of-way. The purchase price allocation 

above reflects this reclassification, which amounted to $830 million as at February 27, 2017. There 

is no change in the amortization period for the right-of-way agreements as a result of this 

reclassification.

During the fourth quarter of 2017, we finalized our fair value measurement of the BC Pipeline & 
Field Services businesses, which resulted in decreases to property, plant and equipment of $1,955 
million and deferred income tax liabilities of $661 million as at February 27, 2017. 

c)            Long-term investments represent Spectra Energy’s 50% equity investment in DCP Midstream, 

Gulfstream Natural Gas System, L.L.C., Nexus Gas Transmission, LLC (Nexus), Steckman Ridge 
LP, Islander East Pipeline Company, L.L.C., Southeast Supply Header L.L.C., and 20% equity 
interest in PennEast Pipeline Company LLC (PennEast). The fair value of these investments was 
determined using an income approach.

d)     Fair value of long-term debt was determined based on the current underlying Government of 
Canada and United States Treasury interest rates on the corresponding bonds, as well as an 
implied credit spread based on current market conditions and resulted in an increase in the book 
value of debt of $1.5 billion. The fair value adjustment to long-term debt related to rate-regulated 
entities of $629 million also results in a regulatory offset in Deferred amounts and other assets in 
the Consolidated Statements of Financial Position.

During the fourth quarter of 2017, deferred amounts and other assets decreased by $530 million 
as at February 27, 2017 due to the finalization of BC Pipelines & Field Services' fair value 
measurement, as discussed under (b) above.

During the fourth quarter of 2017, we identified certain transactions that were not reflected in the 
purchase price equation. This resulted in a $481 million decrease in long-term debt, as discussed 
under (a) above.

e)            Intangible assets primarily consist of customer relationships in the non-regulated business, which 

represent the underlying relationship from long-term agreements with customers that are 
capitalized upon acquisition, determined using the income approach. Intangible assets are 
amortized on a straight-line basis over their expected lives. 

During the third quarter of 2017, intangible assets decreased by $830 million as at February 27, 
2017 due to a reclassification to property, plant and equipment, as discussed under (b) above.

The fair value of intangible assets acquired through the Merger Transaction, by major classes is as 
follows: 

As at February 27, 2017
(millions of Canadian dollars)
Customer relationships1
Project agreement2
Software
Other

Weighted Average
Amortization Rate

3.7%
4.0%
11.1%
4.2%

Fair
Value

739
105
329
115
1,288

1  Represents customer relationships in the non-regulated business, which were capitalized upon acquisition. 
2  Represents a project agreement between SEP, NextEra Energy, Inc., Duke Energy Corporation (Duke Energy) and 

Williams Partners L.P. In accordance with the agreement, payments will be made, based on our proportional ownership 
interest in Sabal Trail Transmission, LLC (Sabal Trail), as certain milestones of the project are met. Amortization of the 
intangible asset began on July 3, 2017, when Sabal Trail was placed into service (Note 12).

f)               The fair value of Spectra Energy’s noncontrolling interests includes approximately 78.4 million 

SEP common units outstanding to the public, valued at the February 24, 2017 closing price of US
$44.88 per common unit on the NYSE, and units held by third parties in Maritimes & Northeast 
Pipeline, L.L.C., Sabal Trail and Algonquin Gas Transmission, L.L.C., valued based on the 

134

135

 
   
 
 
   
 
underlying net assets of each reporting unit and preferred stock held by third parties in Union Gas 
and Westcoast Energy Inc.

The final purchase price allocation was as follows:

During the third quarter of 2017, we finalized our fair value measurement of Sabal Trail, which 
resulted in an increase to noncontrolling interests of $85 million as at February 27, 2017. 

g)             We recorded $36.7 billion in goodwill, which is primarily related to expected synergies from the 

Merger Transaction. The goodwill balance recognized is not deductible for tax purposes. Factors 
that contributed to the goodwill include the opportunity to expand our natural gas pipelines 
segment, the potential for cost and supply chain optimization synergies, existing assembled assets 
and work force that cannot be duplicated at the same cost by a new entrant, franchise rights and 
other intangibles not separately identifiable because they are inextricably linked to the provision of 
regulated utility service and the enhanced scale and geographic diversity which provide greater 
optionality and platforms for future growth.

During the third quarter of 2017, goodwill increased by $85 million as at February 27, 2017 due to 
the finalization of the fair value measurement of Sabal Trail as discussed under (f) above.

During the fourth quarter of 2017, goodwill increased by $1,824 million as at February 27, 2017 
due to the finalization of the fair value measurement of BC Pipelines & Field Services as discussed 
under (b) above.

Acquisition-related expenses incurred to date were approximately $231 million. Costs incurred for the 
years ended December 31, 2017 and 2016 of $180 million and $51 million, respectively, are included in 
Operating and administrative expense in the Consolidated Statements of Earnings.

Upon completion of the Merger Transaction, we began consolidating Spectra Energy. Since the closing 
date of February 27, 2017 through December 31, 2017, Spectra Energy has generated approximately 
$5,740 million in revenues and $2,574 million in earnings.

Our supplemental pro forma consolidated financial information for the years ended December 31, 2017 
and 2016, including the results of operations for Spectra Energy as if the Merger Transaction had been 
completed on January 1, 2016 are as follows:

Year ended December 31,
(unaudited; millions of Canadian dollars)
40,934
Revenues
Earnings attributable to common shareholders1
2,820
1  Merger Transaction costs of $180 million (after-tax $131 million) were excluded from earnings for the year ended December 31, 

45,669
2,902

2017

2016

2017.

Tupper Main and Tupper West
On April 1, 2016, we acquired the Tupper Main and Tupper West gas plants and associated pipelines (the 
Tupper Plants) located in northeastern BC for cash consideration of $539 million. The purchase price for 
the Tupper Plants was equal to the fair value of identifiable net assets acquired and accordingly, we did 
not recognize any goodwill as part of the acquisition. Transaction costs incurred by us totaled 
approximately $1 million and are included in Operating and administrative expense in the Consolidated 
Statements of Earnings. The Tupper Plants are a part of our Gas Transmission and Midstream segment.

Since the closing date through December 31, 2016, the Tupper Plants generated approximately $33 
million in revenues and $22 million in earnings before interest and income taxes. If the acquisition had 
closed on January 1, 2016, the Consolidated Statements of Earnings for the year ended December 31, 
2016 would have shown revenues of $44 million and earnings before interest and income taxes of $28 
million.

136

137

April 1,

(millions of Canadian dollars)

Fair value of net assets acquired:

Property, plant and equipment

Intangible assets

Purchase price:

Cash

OTHER ACQUISITIONS

Chapman Ranch Wind Project

2016

288

251

539

539

On September 9, 2016, we acquired a 100% interest in the 249 megawatt (MW) Chapman Ranch Wind 

Project (Chapman Ranch) located in Texas for cash consideration of $65 million (US$50 million), of which 

$62 million (US$48 million) was allocated to property, plant and equipment and the balance allocated to 

Intangible assets. On November 2, 2016, we invested a further $40 million (US$30 million) in Chapman 

Ranch, of which $23 million (US$17 million) was related to Property, plant and equipment and the balance 

related to Intangible assets. There would have been no effect on our earnings if the transaction had 

occurred on January 1, 2016 as the project was under construction and had not generated revenues to 

date. Chapman Ranch is a part of our Green Power and Transmission segment.

New Creek Wind Project 

In November 2015, we acquired a 100% interest in the 103 MW New Creek Wind Project (New Creek) for 

cash consideration of $48 million (US$36 million), with $35 million (US$26 million) of the purchase price 

allocated to Property, plant and equipment and the balance allocated to Intangible assets. New Creek 

was placed into service in December 2016 and is a part of our Green Power and Transmission segment.

Midstream Business

On February 27, 2015, Enbridge Energy Partners, L.P. (EEP) acquired, through its partially-owned 

subsidiary, Midcoast Energy Partners, L.P. (MEP), the midstream business of New Gulf Resources, LLC 

located in Texas for $106 million (US$85 million) in cash and a contingent future payment of up to $21 

million (US$17 million). The acquisition consisted of a natural gas gathering system that is in operation 

and is a part of our Gas Transmission and Midstream segment. Of the purchase price, we allocated $69 

million (US$55 million) to Property, plant and equipment and the balance to Intangible assets. In 2016, we 

determined that the likelihood of making any future contingent payments was remote.

ASSETS HELD FOR SALE

US Midstream

In November 2017, we announced that we have identified certain non-core assets that we plan to sell or 

monetize in 2018 as they do not meet our long-term strategy. As a result, we are in the process of selling 

certain assets within the United States Midstream business of our Gas Transmission and Midstream 

segment. As at December 31, 2017, we classified these assets as held for sale and measured them at 

the lower of their carrying value or fair value less costs to sell, which resulted in a loss of $4.4 billion ($2.8 

billion after-tax) and a related goodwill impairment of $102 million. Fair value less cost to sell was 

estimated using the discounted cash flow method, which was negatively impacted by prolonged decline in 

commodity prices and deteriorating business performance. This loss has been included within Impairment 

of long-lived assets and Impairment of goodwill, respectively, on the Consolidated Statements of Earnings 

for the year ended December 31, 2017. 

St. Lawrence Gas Company, Inc.

In August 2017, we entered into an agreement to sell the issued and outstanding shares of St. Lawrence 

Gas Company, Inc. (St. Lawrence Gas) for cash proceeds of approximately $88 million (US$70 million). 

Subject to regulatory approval and certain pre-closing conditions, the transaction is expected to close in 

 
 
 
 
 
 
 
 
 
 
 
  
 
underlying net assets of each reporting unit and preferred stock held by third parties in Union Gas 

The final purchase price allocation was as follows:

and Westcoast Energy Inc.

During the third quarter of 2017, we finalized our fair value measurement of Sabal Trail, which 

resulted in an increase to noncontrolling interests of $85 million as at February 27, 2017. 

g)             We recorded $36.7 billion in goodwill, which is primarily related to expected synergies from the 

Merger Transaction. The goodwill balance recognized is not deductible for tax purposes. Factors 

that contributed to the goodwill include the opportunity to expand our natural gas pipelines 

segment, the potential for cost and supply chain optimization synergies, existing assembled assets 

and work force that cannot be duplicated at the same cost by a new entrant, franchise rights and 

other intangibles not separately identifiable because they are inextricably linked to the provision of 

regulated utility service and the enhanced scale and geographic diversity which provide greater 

optionality and platforms for future growth.

During the third quarter of 2017, goodwill increased by $85 million as at February 27, 2017 due to 

the finalization of the fair value measurement of Sabal Trail as discussed under (f) above.

During the fourth quarter of 2017, goodwill increased by $1,824 million as at February 27, 2017 

due to the finalization of the fair value measurement of BC Pipelines & Field Services as discussed 

under (b) above.

Acquisition-related expenses incurred to date were approximately $231 million. Costs incurred for the 

years ended December 31, 2017 and 2016 of $180 million and $51 million, respectively, are included in 

Operating and administrative expense in the Consolidated Statements of Earnings.

Upon completion of the Merger Transaction, we began consolidating Spectra Energy. Since the closing 

date of February 27, 2017 through December 31, 2017, Spectra Energy has generated approximately 

$5,740 million in revenues and $2,574 million in earnings.

Our supplemental pro forma consolidated financial information for the years ended December 31, 2017 

and 2016, including the results of operations for Spectra Energy as if the Merger Transaction had been 

2017

2016

45,669

2,902

40,934

2,820

completed on January 1, 2016 are as follows:

Year ended December 31,

(unaudited; millions of Canadian dollars)

Revenues

Earnings attributable to common shareholders1

2017.

Tupper Main and Tupper West

1  Merger Transaction costs of $180 million (after-tax $131 million) were excluded from earnings for the year ended December 31, 

On April 1, 2016, we acquired the Tupper Main and Tupper West gas plants and associated pipelines (the 

Tupper Plants) located in northeastern BC for cash consideration of $539 million. The purchase price for 

the Tupper Plants was equal to the fair value of identifiable net assets acquired and accordingly, we did 

not recognize any goodwill as part of the acquisition. Transaction costs incurred by us totaled 

approximately $1 million and are included in Operating and administrative expense in the Consolidated 

Statements of Earnings. The Tupper Plants are a part of our Gas Transmission and Midstream segment.

Since the closing date through December 31, 2016, the Tupper Plants generated approximately $33 

million in revenues and $22 million in earnings before interest and income taxes. If the acquisition had 

closed on January 1, 2016, the Consolidated Statements of Earnings for the year ended December 31, 

2016 would have shown revenues of $44 million and earnings before interest and income taxes of $28 

million.

April 1,
(millions of Canadian dollars)
Fair value of net assets acquired:
Property, plant and equipment
Intangible assets

Purchase price:

Cash

2016

288
251
539

539

OTHER ACQUISITIONS
Chapman Ranch Wind Project
On September 9, 2016, we acquired a 100% interest in the 249 megawatt (MW) Chapman Ranch Wind 
Project (Chapman Ranch) located in Texas for cash consideration of $65 million (US$50 million), of which 
$62 million (US$48 million) was allocated to property, plant and equipment and the balance allocated to 
Intangible assets. On November 2, 2016, we invested a further $40 million (US$30 million) in Chapman 
Ranch, of which $23 million (US$17 million) was related to Property, plant and equipment and the balance 
related to Intangible assets. There would have been no effect on our earnings if the transaction had 
occurred on January 1, 2016 as the project was under construction and had not generated revenues to 
date. Chapman Ranch is a part of our Green Power and Transmission segment.

New Creek Wind Project 
In November 2015, we acquired a 100% interest in the 103 MW New Creek Wind Project (New Creek) for 
cash consideration of $48 million (US$36 million), with $35 million (US$26 million) of the purchase price 
allocated to Property, plant and equipment and the balance allocated to Intangible assets. New Creek 
was placed into service in December 2016 and is a part of our Green Power and Transmission segment.

Midstream Business
On February 27, 2015, Enbridge Energy Partners, L.P. (EEP) acquired, through its partially-owned 
subsidiary, Midcoast Energy Partners, L.P. (MEP), the midstream business of New Gulf Resources, LLC 
located in Texas for $106 million (US$85 million) in cash and a contingent future payment of up to $21 
million (US$17 million). The acquisition consisted of a natural gas gathering system that is in operation 
and is a part of our Gas Transmission and Midstream segment. Of the purchase price, we allocated $69 
million (US$55 million) to Property, plant and equipment and the balance to Intangible assets. In 2016, we 
determined that the likelihood of making any future contingent payments was remote.

ASSETS HELD FOR SALE
US Midstream
In November 2017, we announced that we have identified certain non-core assets that we plan to sell or 
monetize in 2018 as they do not meet our long-term strategy. As a result, we are in the process of selling 
certain assets within the United States Midstream business of our Gas Transmission and Midstream 
segment. As at December 31, 2017, we classified these assets as held for sale and measured them at 
the lower of their carrying value or fair value less costs to sell, which resulted in a loss of $4.4 billion ($2.8 
billion after-tax) and a related goodwill impairment of $102 million. Fair value less cost to sell was 
estimated using the discounted cash flow method, which was negatively impacted by prolonged decline in 
commodity prices and deteriorating business performance. This loss has been included within Impairment 
of long-lived assets and Impairment of goodwill, respectively, on the Consolidated Statements of Earnings 
for the year ended December 31, 2017. 

St. Lawrence Gas Company, Inc.
In August 2017, we entered into an agreement to sell the issued and outstanding shares of St. Lawrence 
Gas Company, Inc. (St. Lawrence Gas) for cash proceeds of approximately $88 million (US$70 million). 
Subject to regulatory approval and certain pre-closing conditions, the transaction is expected to close in 

136

137

 
 
 
 
 
 
 
 
 
 
 
  
 
2018. As at December 31, 2017, St. Lawrence Gas, which is a part of our Gas Distribution segment, was 
classified as held for sale in the Consolidated Statements of Financial Position. 

8.  ACCOUNTS RECEIVABLE AND OTHER 

The table below summarizes the presentation of net assets held for sale in our Consolidated Statements 
of Financial Position:

December 31,
(millions of Canadian dollars)
Accounts receivable and other (current assets held for sale)
Deferred amounts and other assets (long-term assets held for sale)
Accounts payable and other (current liabilities held for sale)
Net assets held for sale

2017

424
1,190
(315)
1,299

2016

—
278
—
278

DISPOSITIONS
Olympic Pipeline
On July 31, 2017, we completed the sale of our interest in Olympic Pipeline for cash proceeds of 
approximately $203 million (US$160 million). A gain on disposal of $27 million (US$21 million) before tax 
was included in Other income/(expense) in the Consolidated Statements of Earnings. This interest was a 
part of our Liquids Pipelines segment.

Sandpiper Project
During the year ended December 31, 2017, we sold unused pipe related to the Sandpiper Project 
(Sandpiper) for cash proceeds of approximately $148 million (US$111 million). A gain on disposal of $83 
million (US$63 million) before tax was included in Operating and administrative expense in the 
Consolidated Statements of Earnings. These assets were a part of our Liquids Pipelines segment.

Ozark Pipeline
In 2016, we classified the Ozark Pipeline assets as held for sale. On March 1, 2017, we completed the 
sale of the Ozark Pipeline assets to a subsidiary of MPLX LP for cash proceeds of approximately $294 
million (US$220 million), including reimbursement of costs. A gain on disposal of $14 million (US$10 
million) before tax was included in Operating and administrative expense in the Consolidated Statements 
of Earnings. These assets were a part of our Liquids Pipelines segment.

South Prairie Region
On December 1, 2016, we completed the sale of the South Prairie Region assets for cash proceeds of 
approximately $1.1 billion. A gain on disposal of $850 million before tax was included in Other income/
(expense) in the Consolidated Statements of Earnings. These assets were a part of our Liquids Pipelines 
segment. 

OTHER DISPOSITIONS
In December 2016, we sold other miscellaneous non-core assets for cash proceeds of approximately 
$286 million.

In August 2015, we sold our 77.8% controlling interest in the Frontier Pipeline Company, which holds 
pipeline assets located in the midwest United States, for gross proceeds of approximately $112 million 
(US$85 million). A gain on disposal of $70 million (US$53 million) before tax was included in Other 
income/(expense) in the Consolidated Statements of Earnings. This interest was a part of our Liquids 
Pipelines segment.

In May 2015, the Fund sold certain of its crude oil pipeline system assets for gross proceeds of 
approximately $26 million. A gain on disposal of $22 million before tax was included in Other income/
(expense) in the Consolidated Statements of Earnings. These assets were a part of our Liquids Pipelines 
segment. 

December 31,

(millions of Canadian dollars)

Trade receivables and unbilled revenues1

Other

1  Net of allowance for doubtful accounts of $50 million and $46 million as at December 31, 2017 and 2016, respectively. 

During 2017, in conjunction with its restructuring actions (Note 19), EEP terminated a receivable purchase 

agreement with a special purpose entity wholly-owned by us. 

2017

2016

5,325

1,728

7,053

3,814

1,164

4,978

2017

2016

695

744

89

594

634

5

1,528

1,233

9.  INVENTORY 

December 31,

(millions of Canadian dollars)

Natural gas

Crude oil

Other commodities

10.  PROPERTY, PLANT AND EQUIPMENT 

December 31,

(millions of Canadian dollars)

Pipeline

Pumping equipment, buildings, tanks and other

Land and right-of-way1

Gas mains, services and other

Compressors, meters and other operating equipment

Processing and treating plants

Storage

Wind turbines, solar panels and other

Power transmission

improvements

Under construction

Total property, plant and equipment2

Total accumulated depreciation

Property, plant and equipment, net

Vehicles, office furniture, equipment and other buildings and

Weighted Average

Depreciation Rate

2017

2016

2.5%

2.9%

2.1%

2.1%

2.1%

3.1%

2.0%

3.3%

2.2%

6.5%

—

47,720

16,610

2,538

17,026

5,774

1,440

1,545

4,804

365

390

7,601

105,813

(15,102)

90,711

34,474

15,554

2,067

10,022

4,014

846

—

4,259

378

315

6,966

78,895

(14,611)

64,284

 1 The measurement of weighted average depreciation rate excludes non-depreciable assets.  

 2  Certain assets were reclassified as held for sale as at December 31, 2017 (Note 7).

Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was $2.9 billion, $2.0 

billion and $1.9 billion, respectively.

IMPAIRMENT

Northern Gateway Project

On November 29, 2016, the Canadian Federal Government directed the NEB to dismiss our Northern 

Gateway Project application and the Certificates of Public Convenience and Necessity have been 

rescinded. In consultation with potential shippers and Aboriginal equity partners, we assessed this 

138

139

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2018. As at December 31, 2017, St. Lawrence Gas, which is a part of our Gas Distribution segment, was 

classified as held for sale in the Consolidated Statements of Financial Position. 

8.  ACCOUNTS RECEIVABLE AND OTHER 

December 31,
(millions of Canadian dollars)
Trade receivables and unbilled revenues1
Other

2017

2016

5,325
1,728
7,053

3,814
1,164
4,978

1  Net of allowance for doubtful accounts of $50 million and $46 million as at December 31, 2017 and 2016, respectively. 

During 2017, in conjunction with its restructuring actions (Note 19), EEP terminated a receivable purchase 
agreement with a special purpose entity wholly-owned by us. 

9.  INVENTORY 

December 31,
(millions of Canadian dollars)
Natural gas
Crude oil
Other commodities

10.  PROPERTY, PLANT AND EQUIPMENT 

December 31,
(millions of Canadian dollars)
Pipeline
Pumping equipment, buildings, tanks and other
Land and right-of-way1
Gas mains, services and other
Compressors, meters and other operating equipment
Processing and treating plants
Storage
Wind turbines, solar panels and other
Power transmission
Vehicles, office furniture, equipment and other buildings and

improvements
Under construction
Total property, plant and equipment2
Total accumulated depreciation
Property, plant and equipment, net
 1 The measurement of weighted average depreciation rate excludes non-depreciable assets.  
 2  Certain assets were reclassified as held for sale as at December 31, 2017 (Note 7).

2017

2016

695
744
89
1,528

594
634
5
1,233

Weighted Average
Depreciation Rate

2017

2016

2.5%
2.9%
2.1%
2.1%
2.1%
3.1%
2.0%
3.3%
2.2%

6.5%
—

47,720
16,610
2,538
17,026
5,774
1,440
1,545
4,804
365

34,474
15,554
2,067
10,022
4,014
846
—
4,259
378

390
7,601
105,813
(15,102)
90,711

315
6,966
78,895
(14,611)
64,284

138

139

Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was $2.9 billion, $2.0 
billion and $1.9 billion, respectively.

IMPAIRMENT
Northern Gateway Project
On November 29, 2016, the Canadian Federal Government directed the NEB to dismiss our Northern 
Gateway Project application and the Certificates of Public Convenience and Necessity have been 
rescinded. In consultation with potential shippers and Aboriginal equity partners, we assessed this 

The table below summarizes the presentation of net assets held for sale in our Consolidated Statements 

Accounts receivable and other (current assets held for sale)

Deferred amounts and other assets (long-term assets held for sale)

Accounts payable and other (current liabilities held for sale)

of Financial Position:

December 31,

(millions of Canadian dollars)

Net assets held for sale

DISPOSITIONS

Olympic Pipeline

2017

424

1,190

(315)

1,299

2016

—

278

—

278

On July 31, 2017, we completed the sale of our interest in Olympic Pipeline for cash proceeds of 

approximately $203 million (US$160 million). A gain on disposal of $27 million (US$21 million) before tax 

was included in Other income/(expense) in the Consolidated Statements of Earnings. This interest was a 

part of our Liquids Pipelines segment.

Sandpiper Project

During the year ended December 31, 2017, we sold unused pipe related to the Sandpiper Project 

(Sandpiper) for cash proceeds of approximately $148 million (US$111 million). A gain on disposal of $83 

million (US$63 million) before tax was included in Operating and administrative expense in the 

Consolidated Statements of Earnings. These assets were a part of our Liquids Pipelines segment.

Ozark Pipeline

In 2016, we classified the Ozark Pipeline assets as held for sale. On March 1, 2017, we completed the 

sale of the Ozark Pipeline assets to a subsidiary of MPLX LP for cash proceeds of approximately $294 

million (US$220 million), including reimbursement of costs. A gain on disposal of $14 million (US$10 

million) before tax was included in Operating and administrative expense in the Consolidated Statements 

of Earnings. These assets were a part of our Liquids Pipelines segment.

On December 1, 2016, we completed the sale of the South Prairie Region assets for cash proceeds of 

approximately $1.1 billion. A gain on disposal of $850 million before tax was included in Other income/

(expense) in the Consolidated Statements of Earnings. These assets were a part of our Liquids Pipelines 

South Prairie Region

segment. 

OTHER DISPOSITIONS

$286 million.

In December 2016, we sold other miscellaneous non-core assets for cash proceeds of approximately 

In August 2015, we sold our 77.8% controlling interest in the Frontier Pipeline Company, which holds 

pipeline assets located in the midwest United States, for gross proceeds of approximately $112 million 

(US$85 million). A gain on disposal of $70 million (US$53 million) before tax was included in Other 

income/(expense) in the Consolidated Statements of Earnings. This interest was a part of our Liquids 

Pipelines segment.

In May 2015, the Fund sold certain of its crude oil pipeline system assets for gross proceeds of 

approximately $26 million. A gain on disposal of $22 million before tax was included in Other income/

(expense) in the Consolidated Statements of Earnings. These assets were a part of our Liquids Pipelines 

segment. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
decision and concluded that the project cannot proceed as envisioned. After taking into consideration the 
amount recoverable from potential shippers on Northern Gateway Project, we recognized an impairment 
of $373 million ($272 million after-tax), which is included in Impairment of property, plant and equipment in 
the Consolidated Statements of Earnings. This impairment loss is based on the full carrying value of the 
assets, which have an estimated fair value of nil, and are a part of our Liquids Pipelines segment.

Sandpiper Project
On September 1, 2016, we announced that EEP applied for the withdrawal of regulatory applications 
pending with the Minnesota Public Utilities Commission for Sandpiper. In connection with this 
announcement and other factors, we evaluated Sandpiper for impairment. As a result, we recognized an 
impairment loss of $992 million ($81 million after-tax attributable to us) for the year ended December 31, 
2016, which is included in Impairment of property, plant and equipment in the Consolidated Statements of 
Earnings. Sandpiper is a part of our Liquids Pipelines segment. The estimated remaining fair value of 
Sandpiper was based on the estimated price that would be received to sell unused pipe, land and other 
related equipment in its current condition, considering the current market conditions for sale of these 
assets at the time. The valuation considered a range of potential selling prices from various alternatives 
that could be used to dispose of these assets. The estimated fair value, with the exception of $3 million in 
land, was reclassified into Deferred amounts and other assets in the Consolidated Statements of 
Financial Position as at December 31, 2016. During 2017, we disposed of substantially all of the 
remaining Sandpiper assets (Note 7).

Other
For the year ended December 31, 2016, we recorded impairment charges of $11 million related to EEP’s 
non-core trucking assets and related facilities, which are a part of our Gas Transmission and Midstream 
segment.

For the year ended December 31, 2015, we recorded impairment charges of $96 million, of which $80 
million related to EEP’s Berthold rail facility, included within the Liquids Pipelines segment, due to 
contracts that were not yet renewed beyond 2016. The remaining $16 million in impairment charges relate 
to EEP’s non-core Louisiana propylene pipeline asset, included within the Gas Transmission and 
Midstream segment, following finalization of a contract restructuring with a primary customer.

Impairment charges were based on the amount by which the carrying values of the assets exceeded fair 
value, determined using expected discounted future cash flows, and such charges are included in 
Impairment of property, plant and equipment on the Consolidated Statements of Earnings.

11.  VARIABLE INTEREST ENTITIES 

CONSOLIDATED VARIABLE INTEREST ENTITIES
Enbridge Energy Partners, L.P.
EEP is a publicly-traded Delaware limited partnership and is considered a VIE as its limited partners do 
not have substantive kick-out rights or participating rights. Through our wholly-owned subsidiary, Enbridge 
Energy Company, Inc. (EECI), we have the power to direct EEP’s activities and have a significant impact 
on EEP’s economic performance. Along with an economic interest held through an indirect common 
interest and general partner interest through EECI, and through our 100% ownership of EECI, we are the 
primary beneficiary of EEP. As at December 31, 2017 and 2016, our economic interest in EEP was 34.6% 
and 35.3% respectively. The public owns the remaining interests in EEP.

Enbridge Income Fund
The Fund is an unincorporated open-ended trust established by a trust indenture under the laws of the 
Province of Alberta and is considered a VIE by virtue of its capital structure. We are the primary 
beneficiary of the Fund through our combined 82.5% economic interest held indirectly through a common 
investment in ENF, a direct common interest in the Fund, a preferred unit investment in ECT, a direct 
common interest in Enbridge Income Partners GP Inc., and a direct common interest in EIPLP. As at 

December 31, 2016, our combined economic interest was 86.9%. As at December 31, 2017 and 2016, 

our direct common interest in the Fund was 29.4% and 43.2%, respectively. We also serve in the capacity 

of Manager of ENF and the Fund Group.

Enbridge Commercial Trust

We have the ability to appoint the majority of the trustees to ECT’s Board of Trustees, resulting in a lack 

of decision making ability for the holders of the common trust units of ECT. As a result, ECT is considered 

to be a VIE and although we do not have a common equity interest in ECT, we are considered to be the 

primary beneficiary of ECT. We also serve in the capacity of Manager of ECT, as part of the Fund Group.

Enbridge Income Partners LP

EIPLP, formed in 2002, is involved in the generation, transportation and storage of energy through 

interests in its Liquids Pipelines business, including the Canadian Mainline, the Regional Oil Sands 

System, a 50.0% interest in the Alliance Pipeline, which transports natural gas, and its renewable and 

alternative power generation facilities. EIPLP is a partnership between an indirect wholly-owned 

subsidiary of Enbridge and ECT. EIPLP is considered a VIE as its limited partners lack substantive kick-

out rights and participating rights. Through a majority ownership of EIPLP’s General Partner, 100% 

ownership of Enbridge Management Services Inc. (a service provider for EIPLP), and 53.1% of direct 

common interest in EIPLP, we have the power to direct the activities that most significantly impact 

EIPLP’s economic performance and have the obligation to absorb losses and the right to receive residual 

returns that are potentially significant to EIPLP, making us the primary beneficiary of EIPLP. As at 

December 31, 2017 and 2016, our economic interest in EIPLP was 73.5% and 79.1%, respectively.

Green Power and Transmission

Through various subsidiaries, we have a majority ownership interest in Magic Valley, Wildcat, Keechi 

Wind Project (Keechi), and New Creek wind farms. These wind farms are considered VIEs as they do not 

have sufficient equity at risk and are partially financed by tax equity investors. We are the primary 

beneficiary of these VIEs by virtue of our voting rights, our power to direct the activities that most 

significantly impact the economic performance of the wind farms, and our obligation to absorb losses.

Enbridge Holdings (DakTex) L.L.C.

Enbridge Holdings (DakTex) L.L.C. (DakTex) is owned 75% by a wholly-owned subsidiary of Enbridge 

and 25% by EEP, through which we have an effective 27.6% interest in the equity investment, Bakken 

Pipeline System (Note 12). EEP is the primary beneficiary because it has the power to direct DakTex’s 

activities that most significantly impact its economic performance. We consolidate EEP and by extension 

also consolidate DakTex.

Spectra Energy Partners, LP

We acquired a 75% ownership in SEP through the Merger Transaction. SEP is a natural gas and crude oil 

infrastructure master limited partnership and is considered a VIE as its limited partners do not have 

substantive kick-out rights or participating rights. We are the primary beneficiary of SEP because we have 

the power to direct SEP’s activities that most significantly impact its economic performance.

Valley Crossing Pipeline, LLC

Valley Crossing Pipeline, LLC (Valley Crossing), a wholly-owned subsidiary of Enbridge, is constructing a 

natural gas pipeline to transport natural gas within Texas. Valley Crossing is considered a VIE due to 

insufficient equity at risk to finance its activities. We are the primary beneficiary of Valley Crossing 

because we have the power to direct Valley Crossing’s activities that most significantly impact its 

economic performance.

140

141

 
 
 
 
 
 
 
 
 
 
decision and concluded that the project cannot proceed as envisioned. After taking into consideration the 

amount recoverable from potential shippers on Northern Gateway Project, we recognized an impairment 

of $373 million ($272 million after-tax), which is included in Impairment of property, plant and equipment in 

the Consolidated Statements of Earnings. This impairment loss is based on the full carrying value of the 

assets, which have an estimated fair value of nil, and are a part of our Liquids Pipelines segment.

Sandpiper Project

On September 1, 2016, we announced that EEP applied for the withdrawal of regulatory applications 

pending with the Minnesota Public Utilities Commission for Sandpiper. In connection with this 

announcement and other factors, we evaluated Sandpiper for impairment. As a result, we recognized an 

impairment loss of $992 million ($81 million after-tax attributable to us) for the year ended December 31, 

2016, which is included in Impairment of property, plant and equipment in the Consolidated Statements of 

Earnings. Sandpiper is a part of our Liquids Pipelines segment. The estimated remaining fair value of 

Sandpiper was based on the estimated price that would be received to sell unused pipe, land and other 

related equipment in its current condition, considering the current market conditions for sale of these 

assets at the time. The valuation considered a range of potential selling prices from various alternatives 

that could be used to dispose of these assets. The estimated fair value, with the exception of $3 million in 

land, was reclassified into Deferred amounts and other assets in the Consolidated Statements of 

Financial Position as at December 31, 2016. During 2017, we disposed of substantially all of the 

remaining Sandpiper assets (Note 7).

For the year ended December 31, 2016, we recorded impairment charges of $11 million related to EEP’s 

non-core trucking assets and related facilities, which are a part of our Gas Transmission and Midstream 

Other

segment.

For the year ended December 31, 2015, we recorded impairment charges of $96 million, of which $80 

million related to EEP’s Berthold rail facility, included within the Liquids Pipelines segment, due to 

contracts that were not yet renewed beyond 2016. The remaining $16 million in impairment charges relate 

to EEP’s non-core Louisiana propylene pipeline asset, included within the Gas Transmission and 

Midstream segment, following finalization of a contract restructuring with a primary customer.

Impairment charges were based on the amount by which the carrying values of the assets exceeded fair 

value, determined using expected discounted future cash flows, and such charges are included in 

Impairment of property, plant and equipment on the Consolidated Statements of Earnings.

11.  VARIABLE INTEREST ENTITIES 

CONSOLIDATED VARIABLE INTEREST ENTITIES

Enbridge Energy Partners, L.P.

EEP is a publicly-traded Delaware limited partnership and is considered a VIE as its limited partners do 

not have substantive kick-out rights or participating rights. Through our wholly-owned subsidiary, Enbridge 

Energy Company, Inc. (EECI), we have the power to direct EEP’s activities and have a significant impact 

on EEP’s economic performance. Along with an economic interest held through an indirect common 

interest and general partner interest through EECI, and through our 100% ownership of EECI, we are the 

primary beneficiary of EEP. As at December 31, 2017 and 2016, our economic interest in EEP was 34.6% 

and 35.3% respectively. The public owns the remaining interests in EEP.

Enbridge Income Fund

The Fund is an unincorporated open-ended trust established by a trust indenture under the laws of the 

Province of Alberta and is considered a VIE by virtue of its capital structure. We are the primary 

beneficiary of the Fund through our combined 82.5% economic interest held indirectly through a common 

investment in ENF, a direct common interest in the Fund, a preferred unit investment in ECT, a direct 

common interest in Enbridge Income Partners GP Inc., and a direct common interest in EIPLP. As at 

December 31, 2016, our combined economic interest was 86.9%. As at December 31, 2017 and 2016, 
our direct common interest in the Fund was 29.4% and 43.2%, respectively. We also serve in the capacity 
of Manager of ENF and the Fund Group.

Enbridge Commercial Trust
We have the ability to appoint the majority of the trustees to ECT’s Board of Trustees, resulting in a lack 
of decision making ability for the holders of the common trust units of ECT. As a result, ECT is considered 
to be a VIE and although we do not have a common equity interest in ECT, we are considered to be the 
primary beneficiary of ECT. We also serve in the capacity of Manager of ECT, as part of the Fund Group.

Enbridge Income Partners LP
EIPLP, formed in 2002, is involved in the generation, transportation and storage of energy through 
interests in its Liquids Pipelines business, including the Canadian Mainline, the Regional Oil Sands 
System, a 50.0% interest in the Alliance Pipeline, which transports natural gas, and its renewable and 
alternative power generation facilities. EIPLP is a partnership between an indirect wholly-owned 
subsidiary of Enbridge and ECT. EIPLP is considered a VIE as its limited partners lack substantive kick-
out rights and participating rights. Through a majority ownership of EIPLP’s General Partner, 100% 
ownership of Enbridge Management Services Inc. (a service provider for EIPLP), and 53.1% of direct 
common interest in EIPLP, we have the power to direct the activities that most significantly impact 
EIPLP’s economic performance and have the obligation to absorb losses and the right to receive residual 
returns that are potentially significant to EIPLP, making us the primary beneficiary of EIPLP. As at 
December 31, 2017 and 2016, our economic interest in EIPLP was 73.5% and 79.1%, respectively.

Green Power and Transmission
Through various subsidiaries, we have a majority ownership interest in Magic Valley, Wildcat, Keechi 
Wind Project (Keechi), and New Creek wind farms. These wind farms are considered VIEs as they do not 
have sufficient equity at risk and are partially financed by tax equity investors. We are the primary 
beneficiary of these VIEs by virtue of our voting rights, our power to direct the activities that most 
significantly impact the economic performance of the wind farms, and our obligation to absorb losses.

Enbridge Holdings (DakTex) L.L.C.
Enbridge Holdings (DakTex) L.L.C. (DakTex) is owned 75% by a wholly-owned subsidiary of Enbridge 
and 25% by EEP, through which we have an effective 27.6% interest in the equity investment, Bakken 
Pipeline System (Note 12). EEP is the primary beneficiary because it has the power to direct DakTex’s 
activities that most significantly impact its economic performance. We consolidate EEP and by extension 
also consolidate DakTex.

Spectra Energy Partners, LP
We acquired a 75% ownership in SEP through the Merger Transaction. SEP is a natural gas and crude oil 
infrastructure master limited partnership and is considered a VIE as its limited partners do not have 
substantive kick-out rights or participating rights. We are the primary beneficiary of SEP because we have 
the power to direct SEP’s activities that most significantly impact its economic performance.

Valley Crossing Pipeline, LLC
Valley Crossing Pipeline, LLC (Valley Crossing), a wholly-owned subsidiary of Enbridge, is constructing a 
natural gas pipeline to transport natural gas within Texas. Valley Crossing is considered a VIE due to 
insufficient equity at risk to finance its activities. We are the primary beneficiary of Valley Crossing 
because we have the power to direct Valley Crossing’s activities that most significantly impact its 
economic performance.

140

141

 
 
 
 
 
 
 
 
 
 
Other Limited Partnerships
By virtue of a lack of substantive kick-out rights and participating rights, substantially all limited 
partnerships wholly-owned by us and/or our subsidiaries are considered VIEs. As these entities are 100% 
owned and directed by us with no third parties having the ability to direct any of the significant activities, 
we are considered the primary beneficiary.

The following table includes assets to be used to settle liabilities of our consolidated VIEs and liabilities of 
our consolidated VIEs for which creditors do not have recourse to our general credit as the primary 
beneficiary. These assets and liabilities are included in the Consolidated Statements of Financial Position.

December 31,
(millions of Canadian dollars)
Assets
Cash and cash equivalents
Accounts receivable and other
Accounts receivable from affiliates
Inventory

Property, plant and equipment, net
Long-term investments
Restricted long-term investments
Deferred amounts and other assets
Intangible assets, net
Goodwill
Deferred income taxes

Liabilities
Short-term borrowings
Accounts payable and other
Accounts payable to affiliates
Interest payable
Environmental liabilities
Current portion of long-term debt

Long-term debt
Other long-term liabilities
Deferred income taxes

Net assets before noncontrolling interests

2017

2016

368
2,132
3
220
2,723
68,685
6,258
206
2,921
296
29
145
81,263

485
2,859
131
312
35
2,129
5,951
31,469
4,301
3,010
44,731
36,532

314
781
3
53
1,151
45,720
954
83
2,227
488
29
231
50,883

—
1,446
105
204
140
342
2,237
20,176
1,207
1,753
25,373
25,510

We do not have an obligation to provide financial support to any of the consolidated VIEs, with the 
exception of EIPLP. We are required, when called on by ENF, to backstop equity funding required by 
EIPLP to undertake the growth program embedded in the assets it acquired in the Canadian 
Restructuring Plan.

UNCONSOLIDATED VARIABLE INTEREST ENTITIES

Sabal Trail Transmission, LLC

SEP owns a 50% interest in Sabal Trail, a joint venture that operates a pipeline originating in Alabama 

that transports natural gas to Florida. On July 3, 2017, we discontinued the consolidation of Sabal Trail 

and accounted for our interest under the equity method. Sabal Trail is a VIE due to insufficient equity at 

risk to finance its activities. We are not the primary beneficiary because the power to direct Sabal Trail's 

activities that most significantly impact its economic performance is shared.

Nexus Gas Transmission, LLC

SEP owns a 50% equity investment in Nexus, a joint venture that is constructing a natural gas pipeline 

from Ohio to Michigan and continuing on to Ontario, Canada. Nexus is a VIE due to insufficient equity at 

risk to finance its activities. We are not the primary beneficiary because the power to direct Nexus’ 

activities that most significantly impact its economic performance is shared.

PennEast Pipeline Company, LLC

SEP owned a 10% equity investment in PennEast, which was increased to 20% in June 2017. PennEast 

is constructing a natural gas pipeline from northeastern Pennsylvania to New Jersey. PennEast is a VIE 

due to insufficient equity at risk to finance its activities. We are not the primary beneficiary since we do not 

have the power to direct PennEast’s activities that most significantly impact its economic performance.

We currently hold several equity investments in limited partnerships that are assessed to be VIEs due to 

limited partners not having substantive kick-out rights or participating rights. We have determined that we 

do not have the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic 

performance. Specifically, the power to direct the activities of a majority of these VIEs is shared amongst 

the partners. Each partner has representatives that make up an executive committee who makes 

significant decisions for the VIE and none of the partners may make major decisions unilaterally.

The carrying amount of our interest in VIEs that are unconsolidated and our estimated maximum 

exposure to loss as at December 31, 2017 and 2016 is presented below.

Illinois Extension Pipeline Company, L.L.C.4

December 31, 2017

(millions of Canadian dollars)

Aux Sable Liquid Products L.P.1

Eolien Maritime France SAS2

Hohe See Offshore Wind Project3

Nexus Gas Transmission, LLC5

PennEast Pipeline Company, LLC5

Rampion Offshore Wind Limited6

Sabal Trail Transmissions, LLC5

Vector Pipeline L.P.7

Other4

Carrying

Amount of

Investment

Enbridge’s

Maximum

Exposure to

in VIE

Loss

300

69

763

686

834

69

555

169

21

2,355

5,821

361

754

2,484

686

1,678

2,529

345

679

278

21

9,815

142

143

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other Limited Partnerships

By virtue of a lack of substantive kick-out rights and participating rights, substantially all limited 

partnerships wholly-owned by us and/or our subsidiaries are considered VIEs. As these entities are 100% 

owned and directed by us with no third parties having the ability to direct any of the significant activities, 

we are considered the primary beneficiary.

The following table includes assets to be used to settle liabilities of our consolidated VIEs and liabilities of 

our consolidated VIEs for which creditors do not have recourse to our general credit as the primary 

beneficiary. These assets and liabilities are included in the Consolidated Statements of Financial Position.

December 31,

(millions of Canadian dollars)

Assets

Cash and cash equivalents

Accounts receivable and other

Accounts receivable from affiliates

Inventory

Property, plant and equipment, net

Long-term investments

Restricted long-term investments

Deferred amounts and other assets

Intangible assets, net

Goodwill

Deferred income taxes

Liabilities

Short-term borrowings

Accounts payable and other

Accounts payable to affiliates

Interest payable

Environmental liabilities

Current portion of long-term debt

Long-term debt

Other long-term liabilities

Deferred income taxes

2017

2016

81,263

50,883

368

2,132

3

220

2,723

68,685

6,258

206

2,921

296

29

145

485

2,859

131

312

35

2,129

5,951

31,469

4,301

3,010

44,731

36,532

314

781

3

53

1,151

45,720

2,227

954

83

488

29

231

—

1,446

105

204

140

342

2,237

20,176

1,207

1,753

25,373

25,510

Net assets before noncontrolling interests

We do not have an obligation to provide financial support to any of the consolidated VIEs, with the 

exception of EIPLP. We are required, when called on by ENF, to backstop equity funding required by 

EIPLP to undertake the growth program embedded in the assets it acquired in the Canadian 

Restructuring Plan.

UNCONSOLIDATED VARIABLE INTEREST ENTITIES
Sabal Trail Transmission, LLC
SEP owns a 50% interest in Sabal Trail, a joint venture that operates a pipeline originating in Alabama 
that transports natural gas to Florida. On July 3, 2017, we discontinued the consolidation of Sabal Trail 
and accounted for our interest under the equity method. Sabal Trail is a VIE due to insufficient equity at 
risk to finance its activities. We are not the primary beneficiary because the power to direct Sabal Trail's 
activities that most significantly impact its economic performance is shared.

Nexus Gas Transmission, LLC
SEP owns a 50% equity investment in Nexus, a joint venture that is constructing a natural gas pipeline 
from Ohio to Michigan and continuing on to Ontario, Canada. Nexus is a VIE due to insufficient equity at 
risk to finance its activities. We are not the primary beneficiary because the power to direct Nexus’ 
activities that most significantly impact its economic performance is shared.

PennEast Pipeline Company, LLC
SEP owned a 10% equity investment in PennEast, which was increased to 20% in June 2017. PennEast 
is constructing a natural gas pipeline from northeastern Pennsylvania to New Jersey. PennEast is a VIE 
due to insufficient equity at risk to finance its activities. We are not the primary beneficiary since we do not 
have the power to direct PennEast’s activities that most significantly impact its economic performance.

We currently hold several equity investments in limited partnerships that are assessed to be VIEs due to 
limited partners not having substantive kick-out rights or participating rights. We have determined that we 
do not have the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic 
performance. Specifically, the power to direct the activities of a majority of these VIEs is shared amongst 
the partners. Each partner has representatives that make up an executive committee who makes 
significant decisions for the VIE and none of the partners may make major decisions unilaterally.

The carrying amount of our interest in VIEs that are unconsolidated and our estimated maximum 
exposure to loss as at December 31, 2017 and 2016 is presented below.

December 31, 2017
(millions of Canadian dollars)
Aux Sable Liquid Products L.P.1
Eolien Maritime France SAS2
Hohe See Offshore Wind Project3
Illinois Extension Pipeline Company, L.L.C.4
Nexus Gas Transmission, LLC5
PennEast Pipeline Company, LLC5
Rampion Offshore Wind Limited6
Sabal Trail Transmissions, LLC5
Vector Pipeline L.P.7
Other4

Carrying
Amount of
Investment
in VIE

Enbridge’s
Maximum
Exposure to
Loss

300
69
763
686
834
69
555
2,355
169
21
5,821

361
754
2,484
686
1,678
345
679
2,529
278
21
9,815

142

143

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
158
19
58
759
345
159
17
1,515

Carrying
Amount of
Investment
in VIE

Enbridge’s
Maximum
Exposure to
Loss

December 31, 2016
(millions of Canadian dollars)
Aux Sable Liquid Products L.P.
Eddystone Rail Company, LLC8
Eolien Maritime France SAS
Illinois Extension Pipeline Company, L.L.C.
Rampion Offshore Wind Limited
Vector Pipeline L.P.
Other

223
25
686
759
457
289
17
2,456
1  At December 31, 2017, the maximum exposure to loss includes a guarantee by us for our respective share of the VIE’s borrowing 

on a bank credit facility.

2  At December 31, 2017, the maximum exposure to loss includes the portion of our parental guarantee that has been committed in 
project construction contracts in which we would be liable for in the event of default by the VIE and an outstanding affiliate loan 
receivable for $163 million held by us.

3  At December 31, 2017, the maximum exposure to loss includes the portion of our parental guarantee that has been committed in 

project construction contracts in which we would be liable for in the event of default by the VIE.

4  At December 31, 2017, the maximum exposure to loss is limited to our equity investment as these companies are in operation 

and self-sustaining.

5  At December 31, 2017 the maximum exposure to loss is limited to our equity investment and the remaining expected 

contributions for each joint venture. 

6  At December 31, 2017, the maximum exposure to loss includes the portion of our parental guarantee that has been committed in 

project construction contracts in which we would be liable for in the event of default by the VIE.

7  At December 31, 2017 the maximum exposure to loss includes the carrying value of an outstanding loan issued by us.
8  As at December 31, 2017, Eddystone Rail Company, LLC is a 100% owned subsidiary and therefore is no longer an 

unconsolidated VIE. 

We do not have an obligation to and did not provide any additional financial support to the VIEs during the 
years ended December 31, 2017 and 2016.

144

145

12.  LONG-TERM INVESTMENTS 

December 31,

(millions of Canadian dollars)

EQUITY INVESTMENTS

Liquids Pipelines

Bakken Pipeline System1

Eddystone Rail Company, LLC

Seaway Crude Pipeline System

Illinois Extension Pipeline Company, L.L.C.2

Other

Gas Transmission and Midstream

Alliance Pipeline3

Aux Sable

DCP Midstream, LLC4

Gulfstream Natural Gas System, L.L.C.4

Nexus Gas Transmission, LLC4

Offshore - various joint ventures

PennEast Pipeline Company LLC4

Sabal Trail Transmission, LLC5

Southeast Supply Header L.L.C.4

Steckman Ridge LP4

Texas Express Pipeline

Vector Pipeline L.P.

Other4

Gas Distribution

Noverco Common Shares

Other4

Green Power and Transmission

Eolien Maritime France SAS6

Hohe See Offshore Wind Project7

Rampion Offshore Wind Project

Eliminations and Other

Other

Other

OTHER LONG-TERM INVESTMENTS

Gas Distribution

Noverco Preferred Shares

Green Power and Transmission

Emerging Technologies and Other

Eliminations and Other

Other

Ownership

Interest

2017

2016

27.6%

100.0%

50.0%

65.0%

30.0% - 43.8%

42.7% - 50.0%

22.0% - 74.3%

50.0%

50.0%

50.0%

50.0%

20.0%

50.0%

50.0%

49.5%

35.0%

60.0%

38.9%

50.0%

50.0%

50.0%

24.9%

33.3% - 50.0%

19.0% - 50.0%

19.0% - 42.7%

1,938

—

2,882

2,143

1,205

2,355

686

87

375

300

834

389

69

486

221

430

169

34

—

15

69

763

555

95

26

80

67

—

19

3,129

759

70

411

324

435

—

—

—

—

—

—

—

484

159

4

—

—

58

—

345

100

15

90

79

371

355

16,644

6,836

1  On February 15, 2017, EEP acquired an effective 27.6% interest in the Dakota Access and Energy Transfer Crude Oil Pipelines 

(collectively, the Bakken Pipeline System) for a purchase price of $2 billion (US$1.5 billion). The Bakken Pipeline System was 

placed into service on June 1, 2017. For details regarding our funding arrangement, refer to Note 19 - Noncontrolling Interests. 

2  Owns the Southern Access Extension Project.

3  Certain assets of the Alliance Pipeline are pledged as collateral to Alliance Pipeline lenders.

4  On February 27, 2017, we acquired Spectra Energy's interests in DCP Midstream, Gulfstream Natural Gas System, L.L.C, Nexus, 

PennEast, Southeast Supply Header L.L.C., Steckman Ridge LP and other equity investments as part of the Merger Transaction 

(Note 7).

5  On February 27, 2017, we acquired Spectra Energy's consolidated interest in Sabal Trail as part of the Merger Transaction (Note 

7). On July 3, 2017, Sabal Trail was placed into service and the assets, liabilities, and noncontrolling interests were 

deconsolidated as at the in-service date.

6  On May 19, 2016, we acquired a 50% equity interest in Eolien Maritime France SAS.

7  On February 8, 2017, we acquired an effective 50% interest in EnBW Hohe See GmbH & Co. KG.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Carrying

Amount of

Investment

Enbridge’s

Maximum

Exposure to

in VIE

Loss

158

19

58

759

345

159

17

223

25

686

759

457

289

17

1,515

2,456

December 31, 2016

(millions of Canadian dollars)

Aux Sable Liquid Products L.P.

Eddystone Rail Company, LLC8

Eolien Maritime France SAS

Illinois Extension Pipeline Company, L.L.C.

Rampion Offshore Wind Limited

Vector Pipeline L.P.

Other

on a bank credit facility.

1  At December 31, 2017, the maximum exposure to loss includes a guarantee by us for our respective share of the VIE’s borrowing 

2  At December 31, 2017, the maximum exposure to loss includes the portion of our parental guarantee that has been committed in 

project construction contracts in which we would be liable for in the event of default by the VIE and an outstanding affiliate loan 

receivable for $163 million held by us.

3  At December 31, 2017, the maximum exposure to loss includes the portion of our parental guarantee that has been committed in 

project construction contracts in which we would be liable for in the event of default by the VIE.

4  At December 31, 2017, the maximum exposure to loss is limited to our equity investment as these companies are in operation 

5  At December 31, 2017 the maximum exposure to loss is limited to our equity investment and the remaining expected 

and self-sustaining.

contributions for each joint venture. 

6  At December 31, 2017, the maximum exposure to loss includes the portion of our parental guarantee that has been committed in 

project construction contracts in which we would be liable for in the event of default by the VIE.

7  At December 31, 2017 the maximum exposure to loss includes the carrying value of an outstanding loan issued by us.

8  As at December 31, 2017, Eddystone Rail Company, LLC is a 100% owned subsidiary and therefore is no longer an 

unconsolidated VIE. 

We do not have an obligation to and did not provide any additional financial support to the VIEs during the 

years ended December 31, 2017 and 2016.

12.  LONG-TERM INVESTMENTS 

December 31,
(millions of Canadian dollars)
EQUITY INVESTMENTS

Liquids Pipelines

Bakken Pipeline System1
Eddystone Rail Company, LLC
Seaway Crude Pipeline System
Illinois Extension Pipeline Company, L.L.C.2
Other

Gas Transmission and Midstream

Alliance Pipeline3
Aux Sable
DCP Midstream, LLC4
Gulfstream Natural Gas System, L.L.C.4
Nexus Gas Transmission, LLC4
Offshore - various joint ventures
PennEast Pipeline Company LLC4
Sabal Trail Transmission, LLC5
Southeast Supply Header L.L.C.4
Steckman Ridge LP4
Texas Express Pipeline
Vector Pipeline L.P.
Other4

Gas Distribution

Noverco Common Shares
Other4

Green Power and Transmission
Eolien Maritime France SAS6
Hohe See Offshore Wind Project7
Rampion Offshore Wind Project
Other

Eliminations and Other

Other

OTHER LONG-TERM INVESTMENTS

Gas Distribution

Noverco Preferred Shares
Green Power and Transmission

Emerging Technologies and Other

Eliminations and Other

Ownership
Interest

2017

2016

27.6%
100.0%
50.0%
65.0%
30.0% - 43.8%

50.0%
42.7% - 50.0%
50.0%
50.0%
50.0%
22.0% - 74.3%
20.0%
50.0%
50.0%
49.5%
35.0%
60.0%
33.3% - 50.0%

38.9%
50.0%

50.0%
50.0%
24.9%
19.0% - 50.0%

19.0% - 42.7%

1,938
—
2,882
686
87

375
300
2,143
1,205
834
389
69
2,355
486
221
430
169
34

—
15

69
763
555
95

26

371

80

—
19
3,129
759
70

411
324
—
—
—
435
—
—
—
—
484
159
4

—
—

58
—
345
100

15

355

90

Other

79
6,836
1  On February 15, 2017, EEP acquired an effective 27.6% interest in the Dakota Access and Energy Transfer Crude Oil Pipelines 
(collectively, the Bakken Pipeline System) for a purchase price of $2 billion (US$1.5 billion). The Bakken Pipeline System was 
placed into service on June 1, 2017. For details regarding our funding arrangement, refer to Note 19 - Noncontrolling Interests. 

67
16,644

2  Owns the Southern Access Extension Project.
3  Certain assets of the Alliance Pipeline are pledged as collateral to Alliance Pipeline lenders.
4  On February 27, 2017, we acquired Spectra Energy's interests in DCP Midstream, Gulfstream Natural Gas System, L.L.C, Nexus, 
PennEast, Southeast Supply Header L.L.C., Steckman Ridge LP and other equity investments as part of the Merger Transaction 
(Note 7).

5  On February 27, 2017, we acquired Spectra Energy's consolidated interest in Sabal Trail as part of the Merger Transaction (Note 

7). On July 3, 2017, Sabal Trail was placed into service and the assets, liabilities, and noncontrolling interests were 
deconsolidated as at the in-service date.

6  On May 19, 2016, we acquired a 50% equity interest in Eolien Maritime France SAS.
7  On February 8, 2017, we acquired an effective 50% interest in EnBW Hohe See GmbH & Co. KG.

144

145

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Equity investments include the unamortized excess of the purchase price over the underlying net book 
value of the investees’ assets at the purchase date. As at December 31, 2017, this comprised of $2.0 
billion in Goodwill and $643 million in amortizable assets. As at December 31, 2016, this comprised of 
$859 million in Goodwill and $687 million in amortizable assets.

For the years ended December 31, 2017, 2016 and 2015, dividends received from equity investments 
were $1.4 billion, $825 million and $719 million, respectively. 

Summarized combined financial information of our interest in unconsolidated equity investments 
(presented at 100%) is as follows: 

2017

Year Ended December 31,
2016

2015

Seaway

Other

Total Seaway

Other

Total Seaway

Other

Total

959
286
672

336

15,254
12,911
2,056

16,213
13,197
2,728

926

1,262

938
293
643

322

3,164
3,051
(2)

4,102
3,344
641

147

469

833
263
566

283

3,054
2,210
512

3,887
2,473
1,078

207

490

December 31, 2017

December 31, 2016

Seaway

Other

Total Seaway

Other

Total

3,432
106
41,697
3,329
3,311
143
13
13,582
— 3,191

3,538
45,026
3,454
13,595
3,191

86
3,651
172
13
—

842
12,264
831
5,121
—

928
15,915
1,003
5,134
—

(millions of Canadian
dollars)
Operating revenues
Operating expenses
Earnings
Earnings attributable to
controlling interests

(millions of Canadian dollars)
Current assets
Non-current assets
Current liabilities
Non-current liabilities
Noncontrolling interests

Eddystone Rail Company, LLC
On October 19, 2017, we sold all assets related to Eddystone Rail Company, LLC (Eddystone Rail) in 
exchange for the remaining 25% interest of the joint venture. As a result, Eddystone Rail is now 100% 
owned and carried at nil value.

During the year ended December 31, 2016, we recorded an investment impairment of $184 million 
related to our 75% joint venture interest in Eddystone Rail at the time, which is held through Enbridge Rail 
(Philadelphia) L.L.C., a wholly-owned subsidiary. Eddystone Rail is a rail-to-barge transloading facility 
located in the greater Philadelphia, Pennsylvania area that delivers Bakken and other light sweet crude oil 
to Philadelphia area refineries. Due to a significant decrease in price spreads between Bakken crude oil 
and West Africa/Brent crude oil and increased competition in the region, demand for Eddystone Rail 
services dropped significantly, which led to the completion of an impairment test. The impairment charge 
is presented within Income from equity investments on the Consolidated Statements of Earnings. The 
investment in Eddystone Rail is a part of our Liquids Pipelines segment.

The impairment charge was based on the amount by which the carrying value of the asset exceeded fair 
value, determined using an adjusted net worth approach. Our estimate of fair value required us to use 
significant unobservable inputs representative of a Level 3 fair value measurement, including 
assumptions related to the future performance of Eddystone Rail.

Aux Sable
During the year ended December 31, 2016, Aux Sable recorded an asset impairment charge of $37 
million related to certain underutilized assets at Aux Sable US' NGL extraction and fractionation plant.

Sabal Trail Transmission, LLC

On July 3, 2017, Sabal Trail was placed into service. In accordance with the Sabal Trail LLC Agreement, 

upon the in-service date, the power to direct Sabal Trail’s activities become shared with its members. We 

are no longer the primary beneficiary and deconsolidated the assets, liabilities and noncontrolling 

interests related to Sabal Trail as at the in-service date.

At deconsolidation, our 50% interest in Sabal Trail was recorded at its fair value of $2.3 billion (US$1.9 

billion), which approximated its carrying value as a long-term equity investment. As a result, there was no 

gain or loss recognized for the year ended December 31, 2017 related to the remeasurement of the 

retained equity interest to its fair value. The fair value was determined using the income approach which 

is based on the present value of the future cash flows. 

Noverco Inc.

As at December 31, 2017 and 2016, we owned an equity interest in Noverco through ownership of 38.9% 

of its common shares and an investment in preferred shares. The preferred shares are entitled to a 

cumulative preferred dividend based on the average yield of Government of Canada bonds maturing in 

10 years plus a margin of 4.38%.

As at December 31, 2017 and 2016, Noverco owned an approximate 1.9% and 3.4% reciprocal 

shareholding in our common shares, respectively. Through secondary offerings, Noverco purchased 1.2 

million common shares in February 2016. Shares purchased and sold in this transaction were treated as 

treasury stock on the Consolidated Statements of Changes in Equity.

As a result of Noverco’s reciprocal shareholding in our common shares, as at December 31, 2017 and 

2016, we had an indirect pro-rata interest of 0.7% and 1.3%, respectively, in our own shares. Both the 

equity investment in Noverco and shareholders’ equity have been reduced by the reciprocal shareholding 

of $102 million as at December 31, 2017 and 2016. Noverco records dividends paid from us as dividend 

income and we eliminate these dividends from our equity earnings of Noverco. We record our pro-rata 

share of dividends paid by us to Noverco as a reduction of dividends paid and an increase in our 

investment in Noverco.

13.  RESTRICTED LONG-TERM INVESTMENTS 

Effective January 1, 2015, we began collecting and setting aside funds to cover future pipeline 

abandonment costs for all NEB regulated pipelines as a result of the NEB’s regulatory requirements 

under LMCI. The funds collected are held in trusts in accordance with the NEB decision. The funds 

collected from shippers are reported within Transportation and other services revenues on the 

Consolidated Statements of Earnings and Restricted long-term investments on the Consolidated 

Statements of Financial Position. Concurrently, we reflect the future abandonment cost as an increase to 

Operating and administrative expense on the Consolidated Statements of Earnings and Other long-term 

liabilities on the Consolidated Statements of Financial Position.

We routinely invest excess cash and various restricted balances in securities such as commercial paper, 

bankers acceptances, corporate debt securities, Canadian equity securities, treasury bills and money 

market securities in the United States and Canada. 

As at December 31, 2017 and 2016, we had restricted long-term investments held in trust and classified 

as held for sale and carried at fair value of $267 million and $90 million, respectively. We had estimated 

future abandonment costs related to LMCI of $151 million and $97 million as at December 31, 2017 and 

2016, respectively.

146

147

 
 
 
 
Equity investments include the unamortized excess of the purchase price over the underlying net book 

value of the investees’ assets at the purchase date. As at December 31, 2017, this comprised of $2.0 

billion in Goodwill and $643 million in amortizable assets. As at December 31, 2016, this comprised of 

$859 million in Goodwill and $687 million in amortizable assets.

For the years ended December 31, 2017, 2016 and 2015, dividends received from equity investments 

were $1.4 billion, $825 million and $719 million, respectively. 

Summarized combined financial information of our interest in unconsolidated equity investments 

(presented at 100%) is as follows: 

2017

2016

2015

Year Ended December 31,

Seaway

Other

Total Seaway

Other

Total Seaway

Other

Total

959

286

672

336

15,254

12,911

2,056

16,213

13,197

2,728

926

1,262

938

293

643

322

3,164

3,051

(2)

4,102

3,344

641

3,054

2,210

512

3,887

2,473

1,078

147

469

207

490

833

263

566

283

December 31, 2017

December 31, 2016

Seaway

Other

Total Seaway

Other

Total

106

3,329

143

13

3,432

41,697

3,311

13,582

— 3,191

3,538

45,026

3,454

13,595

3,191

86

842

928

3,651

12,264

15,915

172

13

—

831

5,121

—

1,003

5,134

—

(millions of Canadian

dollars)

Operating revenues

Operating expenses

Earnings

Earnings attributable to

controlling interests

(millions of Canadian dollars)

Current assets

Non-current assets

Current liabilities

Non-current liabilities

Noncontrolling interests

Eddystone Rail Company, LLC

On October 19, 2017, we sold all assets related to Eddystone Rail Company, LLC (Eddystone Rail) in 

exchange for the remaining 25% interest of the joint venture. As a result, Eddystone Rail is now 100% 

owned and carried at nil value.

During the year ended December 31, 2016, we recorded an investment impairment of $184 million 

related to our 75% joint venture interest in Eddystone Rail at the time, which is held through Enbridge Rail 

(Philadelphia) L.L.C., a wholly-owned subsidiary. Eddystone Rail is a rail-to-barge transloading facility 

located in the greater Philadelphia, Pennsylvania area that delivers Bakken and other light sweet crude oil 

to Philadelphia area refineries. Due to a significant decrease in price spreads between Bakken crude oil 

and West Africa/Brent crude oil and increased competition in the region, demand for Eddystone Rail 

services dropped significantly, which led to the completion of an impairment test. The impairment charge 

is presented within Income from equity investments on the Consolidated Statements of Earnings. The 

investment in Eddystone Rail is a part of our Liquids Pipelines segment.

The impairment charge was based on the amount by which the carrying value of the asset exceeded fair 

value, determined using an adjusted net worth approach. Our estimate of fair value required us to use 

significant unobservable inputs representative of a Level 3 fair value measurement, including 

assumptions related to the future performance of Eddystone Rail.

Aux Sable

During the year ended December 31, 2016, Aux Sable recorded an asset impairment charge of $37 

million related to certain underutilized assets at Aux Sable US' NGL extraction and fractionation plant.

Sabal Trail Transmission, LLC
On July 3, 2017, Sabal Trail was placed into service. In accordance with the Sabal Trail LLC Agreement, 
upon the in-service date, the power to direct Sabal Trail’s activities become shared with its members. We 
are no longer the primary beneficiary and deconsolidated the assets, liabilities and noncontrolling 
interests related to Sabal Trail as at the in-service date.

At deconsolidation, our 50% interest in Sabal Trail was recorded at its fair value of $2.3 billion (US$1.9 
billion), which approximated its carrying value as a long-term equity investment. As a result, there was no 
gain or loss recognized for the year ended December 31, 2017 related to the remeasurement of the 
retained equity interest to its fair value. The fair value was determined using the income approach which 
is based on the present value of the future cash flows. 

Noverco Inc.
As at December 31, 2017 and 2016, we owned an equity interest in Noverco through ownership of 38.9% 
of its common shares and an investment in preferred shares. The preferred shares are entitled to a 
cumulative preferred dividend based on the average yield of Government of Canada bonds maturing in 
10 years plus a margin of 4.38%.

As at December 31, 2017 and 2016, Noverco owned an approximate 1.9% and 3.4% reciprocal 
shareholding in our common shares, respectively. Through secondary offerings, Noverco purchased 1.2 
million common shares in February 2016. Shares purchased and sold in this transaction were treated as 
treasury stock on the Consolidated Statements of Changes in Equity.

As a result of Noverco’s reciprocal shareholding in our common shares, as at December 31, 2017 and 
2016, we had an indirect pro-rata interest of 0.7% and 1.3%, respectively, in our own shares. Both the 
equity investment in Noverco and shareholders’ equity have been reduced by the reciprocal shareholding 
of $102 million as at December 31, 2017 and 2016. Noverco records dividends paid from us as dividend 
income and we eliminate these dividends from our equity earnings of Noverco. We record our pro-rata 
share of dividends paid by us to Noverco as a reduction of dividends paid and an increase in our 
investment in Noverco.

13.  RESTRICTED LONG-TERM INVESTMENTS 

Effective January 1, 2015, we began collecting and setting aside funds to cover future pipeline 
abandonment costs for all NEB regulated pipelines as a result of the NEB’s regulatory requirements 
under LMCI. The funds collected are held in trusts in accordance with the NEB decision. The funds 
collected from shippers are reported within Transportation and other services revenues on the 
Consolidated Statements of Earnings and Restricted long-term investments on the Consolidated 
Statements of Financial Position. Concurrently, we reflect the future abandonment cost as an increase to 
Operating and administrative expense on the Consolidated Statements of Earnings and Other long-term 
liabilities on the Consolidated Statements of Financial Position.

We routinely invest excess cash and various restricted balances in securities such as commercial paper, 
bankers acceptances, corporate debt securities, Canadian equity securities, treasury bills and money 
market securities in the United States and Canada. 

As at December 31, 2017 and 2016, we had restricted long-term investments held in trust and classified 
as held for sale and carried at fair value of $267 million and $90 million, respectively. We had estimated 
future abandonment costs related to LMCI of $151 million and $97 million as at December 31, 2017 and 
2016, respectively.

146

147

 
 
 
 
14.  INTANGIBLE ASSETS 

15.  GOODWILL 

The following table provides the weighted average amortization rate, gross carrying value, accumulated 
amortization and net carrying value for each of our major classes of intangible assets:

December 31, 20171
(millions of Canadian dollars)

Customer relationships
Power purchase agreements
Project agreement2
Software
Other intangible assets3

Weighted Average
Amortization Rate

Accumulated
Amortization

Cost 

3.5%
3.5%
4.0%
11.3%
4.4%

967
99
150
1,760
1,162
4,138

41
17
3
714
96
871

1 Certain assets were reclassified as held for sale as at December 31, 2017 (Note 7).
2 Represents a project agreement acquired from the Merger Transaction (Note 7).
3 The measurement of weighted average amortization rate excludes non-depreciable intangible assets.  

December 31, 2016
(millions of Canadian dollars)
Customer relationships
Natural gas supply opportunities
Power purchase agreements
Software
Other intangible assets

Weighted Average
Amortization Rate

Accumulated
Amortization

Cost 

3.0%
3.2%
3.2%
11.8%
4.8%

251
435
100
1,388
213
2,387

4
127
14
607
62
814

Net

926
82
147
1,046
1,066
3,267

Net

247
308
86
781
151
1,573

For the years ended December 31, 2017, 2016 and 2015, our amortization expense related to intangible 
assets totaled $280 million, $177 million and $158 million, respectively. The following table presents our 
forecast of amortization expense associated with existing intangible assets for the years indicated as 
follows in millions of Canadian dollars:

2018
264

2019
240

2020
217

2021
197

2022
179

Gas

Green Power

Liquids

Transmission

Gas

and

Energy

Eliminations

Pipelines

& Midstream

Distribution

Transmission

Services

and Other Consolidated

(millions of Canadian dollars)

Gross Cost

Balance at January 1, 2016

Foreign exchange and other

Balance at December 31, 2016

Acquired in Merger Transaction 

Sabal Trail deconsolidation (Note 

(Note 7)

12)

Disposition

Foreign exchange and other

Balance at December 31, 2017

Accumulated Impairment

Balance at January 1, 2016

Impairment

Impairment

Balance at December 31, 2016

Balance at December 31, 2017

Carrying Value

60

(1)

59

—

(29)

(314)

7,786

—

—

—

—

—

8,070

22,914

5,672

458

(1)

457

(966)

—

(866)

(440)

—

(440)

(102)

(542)

7

—

7

—

—

(7)

—

(7)

—

(7)

21,539

5,679

Balance at December 31, 2016

Balance at December 31, 2017

59

7,786

17

20,997

—

5,672

—

—

—

—

—

—

—

—

—

—

—

—

—

—

2

—

2

—

—

—

2

—

—

—

—

—

2

2

13

—

13

—

—

—

13

(13)

—

(13)

—

(13)

—

—

540

(2)

538

36,656

(966)

(29)

(1,180)

35,019

(460)

—

(460)

(102)

(562)

78

34,457

ACQUISITION AND DISPOSITION

In 2017, we recognized $36.7 billion of goodwill on the Merger Transaction and derecognized $29 million 

of goodwill on the disposition of Olympic Pipeline.

IMPAIRMENT

US Midstream

Gas Transmission and Midstream

During the year ended December 31, 2017, we recorded a goodwill impairment charge of $102 million 

related to certain assets in our Gas Transmission and Midstream segment classified as held for sale (Note 

7). Goodwill was allocated to certain disposal groups qualifying as a business based on a relative fair 

value approach. In connection with the write-down of the carrying values of the assets held for sale to its 

fair value less costs to sell, the related goodwill was impaired. The fair value of these assets were 

estimated using the discounted cash flow method, which was negatively impacted by prolonged decline in 

commodity prices and deteriorating business performance. We also performed goodwill impairment 

testing on the associated gas midstream reporting unit resulting in no additional impairment charge. 

The estimate of the gas midstream reporting unit’s fair value required the use of significant unobservable 

inputs representative of a Level 3 fair value measurement, including assumptions related to the future 

performance of the reporting unit. 

148

149

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
14.  INTANGIBLE ASSETS 

15.  GOODWILL 

The following table provides the weighted average amortization rate, gross carrying value, accumulated 

amortization and net carrying value for each of our major classes of intangible assets:

Weighted Average

Amortization Rate

Accumulated

Cost 

Amortization

December 31, 20171

(millions of Canadian dollars)

Customer relationships

Power purchase agreements

Project agreement2

Software

Other intangible assets3

December 31, 2016

(millions of Canadian dollars)

Customer relationships

Natural gas supply opportunities

Power purchase agreements

Software

Other intangible assets

3.5%

3.5%

4.0%

11.3%

4.4%

3.0%

3.2%

3.2%

11.8%

4.8%

967

99

150

1,760

1,162

4,138

251

435

100

1,388

213

2,387

Net

926

82

147

1,046

1,066

3,267

Net

247

308

86

781

151

1,573

41

17

3

714

96

871

4

127

14

607

62

814

1 Certain assets were reclassified as held for sale as at December 31, 2017 (Note 7).

2 Represents a project agreement acquired from the Merger Transaction (Note 7).

3 The measurement of weighted average amortization rate excludes non-depreciable intangible assets.  

Weighted Average

Amortization Rate

Accumulated

Cost 

Amortization

For the years ended December 31, 2017, 2016 and 2015, our amortization expense related to intangible 

assets totaled $280 million, $177 million and $158 million, respectively. The following table presents our 

forecast of amortization expense associated with existing intangible assets for the years indicated as 

follows in millions of Canadian dollars:

2018

264

2019

240

2020

217

2021

197

2022

179

Liquids
Pipelines

Gas
Transmission
& Midstream

Gas
Distribution

Green Power
and
Transmission

Energy
Services

Eliminations

and Other Consolidated

(millions of Canadian dollars)
Gross Cost
Balance at January 1, 2016
Foreign exchange and other
Balance at December 31, 2016
Acquired in Merger Transaction 
(Note 7)
Sabal Trail deconsolidation (Note 
12)

Disposition
Foreign exchange and other
Balance at December 31, 2017
Accumulated Impairment
Balance at January 1, 2016
Impairment
Balance at December 31, 2016
Impairment
Balance at December 31, 2017
Carrying Value
Balance at December 31, 2016
Balance at December 31, 2017

60
(1)
59

458
(1)
457

7
—
7

8,070

22,914

5,672

—

(29)
(314)
7,786

—
—
—
—
—

(966)

—
(866)
21,539

(440)
—
(440)
(102)
(542)

—
—
5,679

(7)
—
(7)
—
(7)

59
7,786

17
20,997

—
5,672

—
—
—

—

—
—
—

—
—
—
—
—

—
—

2
—
2

—

—
—
2

—
—
—
—
—

2
2

13
—
13

—

—
—
13

(13)
—
(13)
—
(13)

—
—

540
(2)
538

36,656

(966)

(29)
(1,180)
35,019

(460)
—
(460)
(102)
(562)

78
34,457

ACQUISITION AND DISPOSITION
In 2017, we recognized $36.7 billion of goodwill on the Merger Transaction and derecognized $29 million 
of goodwill on the disposition of Olympic Pipeline.

IMPAIRMENT
Gas Transmission and Midstream
US Midstream
During the year ended December 31, 2017, we recorded a goodwill impairment charge of $102 million 
related to certain assets in our Gas Transmission and Midstream segment classified as held for sale (Note 
7). Goodwill was allocated to certain disposal groups qualifying as a business based on a relative fair 
value approach. In connection with the write-down of the carrying values of the assets held for sale to its 
fair value less costs to sell, the related goodwill was impaired. The fair value of these assets were 
estimated using the discounted cash flow method, which was negatively impacted by prolonged decline in 
commodity prices and deteriorating business performance. We also performed goodwill impairment 
testing on the associated gas midstream reporting unit resulting in no additional impairment charge. 

The estimate of the gas midstream reporting unit’s fair value required the use of significant unobservable 
inputs representative of a Level 3 fair value measurement, including assumptions related to the future 
performance of the reporting unit. 

148

149

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Enbridge Energy Partners, L.P.
During the year ended December 31, 2015, we recorded a goodwill impairment loss of $440 million ($167 
million after-tax attributable to us) related to EEP’s natural gas and NGL businesses, which EEP held 
directly and indirectly through its partially-owned subsidiary, MEP. Due to a prolonged decline in 
commodity prices, reduction in producers’ expected drilling programs negatively impacted forecasted 
cash flows from EEP’s natural gas and NGL systems. This change in circumstance led to the completion 
of an impairment test, resulting in a full impairment of goodwill on EEP’s natural gas and NGL businesses.

In performing the impairment assessment, EEP measured the fair value of its reporting units primarily by 
using a discounted cash flow analysis and it also considered overall market capitalization of its business, 
cash flow measurement data and other factors. EEP’s estimate of fair value required it to use significant 
unobservable inputs representative of a Level 3 fair value measurement, including assumptions related to 
the future performance of its reporting units.

16.  ACCOUNTS PAYABLE AND OTHER 

December 31,
(millions of Canadian dollars)
Trade payables and operating accrued liabilities
Construction payables and contractor holdbacks
Current derivative liabilities
Dividends payable
Other

2017

2016

5,135
706
1,130
1,169
1,338
9,478

3,718
712
1,941
29
895
7,295

17.  DEBT 

December 31,

Enbridge Inc.

(millions of Canadian dollars)

United States dollar term notes1

Medium-term notes

Fixed-to-floating subordinated term notes2,3

Floating rate notes4

Commercial paper and credit facility draws5

Other6

Enbridge (U.S.) Inc.

Medium-term notes7

Commercial paper and credit facility draws8

Enbridge Energy Partners, L.P.

Senior notes9

Junior subordinated notes10

Commercial paper and credit facility draws11

Enbridge Gas Distribution Inc.

Commercial paper and credit facility draws

Commercial paper and credit facility draws

Enbridge Pipelines (Southern Lights) L.L.C.

Medium-term notes

Debentures

Enbridge Income Fund

Medium-term notes

Senior notes12

Enbridge Pipelines Inc.

Medium-term notes13

Debentures

Commercial paper and credit facility draws14

Commercial paper and credit facility draws16

Other6

Enbridge Southern Lights LP

Midcoast Energy Partners, L.P.

Senior notes

Senior notes15

Spectra Energy Capital17 

Senior notes18

Spectra Energy Partners, LP17

Senior secured notes19

Senior notes20

Floating rate notes21

Union Gas Limited17

Medium-term notes

Senior debentures

Debentures

Westcoast Energy Inc.17

Senior secured notes

Medium-term notes

Debentures

Other23

Total debt

Current maturities

Short-term borrowings24

Long-term debt

Commercial paper and credit facility draws22

Commercial paper and credit facility draws

Fair value adjustment - Spectra Energy acquisition

Weighted Average

Interest Rate

Maturity

2017

2016

4.1%

4.4%

5.6%

2.3%

2022-2046

2019-2064

2077

2019-2020

2019-2022

2.1%

2019

6.2%

2018-2045

2.3%

2019-2022

2020-2050

2018-2044

2067

2024

2019

2020

2040

2024

2019

2018-2046

2018-2045

2020

2020

2022

2018

2021

2019

2018-2047

2018-2025

2019-2041

2018-2026

4.5%

9.9%

1.4%

4.3%

2.9%

4.0%

4.5%

8.2%

1.5%

6.1%

2.7%

2.0%

4.2%

8.7%

8.7%

1.3%

6.4%

4.7%

8.6%

4.0%

2040

4.1%

2019-2024

5.3%

2018-2038

5,889

5,698

3,843

2,254

2,729

3

—

490

6,328

501

1,820

3,695

85

960

1,750

755

1,207

4,525

200

1,438

4

315

501

—

1,665

138

7,192

501

2,824

3,490

75

250

485

66

2,177

525

1,114

4,968

4,498

1,007

1,171

4,672

4

14

126

6,781

537

2,226

3,904

85

351

2,075

225

1,342

4,525

200

1,032

4

323

537

564

—

—

—

—

—

—

—

—

—

—

—

—

—

(312)

65,180

(2,871)

(1,444)

60,865

(226)

40,945

(4,100)

(351)

36,494

150

151

1  2017 - US$4,700 million; 2016 - US$3,700 million.

2  2017 - $1,650 million and US$1,750 million; 2016 - US$750 million. For the initial 10 years, the notes carry a fixed interest rate. 

Subsequently, the interest rate will be floating and set to equal the three-month Bankers' Acceptance Rate or London Interbank 

Offered Rate (LIBOR) plus a margin.  

 
 
Enbridge Energy Partners, L.P.

During the year ended December 31, 2015, we recorded a goodwill impairment loss of $440 million ($167 

million after-tax attributable to us) related to EEP’s natural gas and NGL businesses, which EEP held 

directly and indirectly through its partially-owned subsidiary, MEP. Due to a prolonged decline in 

commodity prices, reduction in producers’ expected drilling programs negatively impacted forecasted 

cash flows from EEP’s natural gas and NGL systems. This change in circumstance led to the completion 

of an impairment test, resulting in a full impairment of goodwill on EEP’s natural gas and NGL businesses.

In performing the impairment assessment, EEP measured the fair value of its reporting units primarily by 

using a discounted cash flow analysis and it also considered overall market capitalization of its business, 

cash flow measurement data and other factors. EEP’s estimate of fair value required it to use significant 

unobservable inputs representative of a Level 3 fair value measurement, including assumptions related to 

the future performance of its reporting units.

16.  ACCOUNTS PAYABLE AND OTHER 

December 31,

(millions of Canadian dollars)

Trade payables and operating accrued liabilities

Construction payables and contractor holdbacks

Current derivative liabilities

Dividends payable

Other

2017

2016

5,135

706

1,130

1,169

1,338

9,478

3,718

712

1,941

29

895

7,295

17.  DEBT 

December 31,
(millions of Canadian dollars)
Enbridge Inc.

United States dollar term notes1
Medium-term notes
Fixed-to-floating subordinated term notes2,3
Floating rate notes4
Commercial paper and credit facility draws5
Other6

Enbridge (U.S.) Inc.

Medium-term notes7
Commercial paper and credit facility draws8

Enbridge Energy Partners, L.P.

Senior notes9
Junior subordinated notes10
Commercial paper and credit facility draws11

Enbridge Gas Distribution Inc.

Medium-term notes
Debentures
Commercial paper and credit facility draws

Enbridge Income Fund
Medium-term notes
Commercial paper and credit facility draws

Enbridge Pipelines (Southern Lights) L.L.C.

Senior notes12

Enbridge Pipelines Inc.
Medium-term notes13
Debentures
Commercial paper and credit facility draws14
Other6

Enbridge Southern Lights LP

Senior notes

Midcoast Energy Partners, L.P.

Senior notes15
Commercial paper and credit facility draws16

Spectra Energy Capital17 

Senior notes18

Spectra Energy Partners, LP17
Senior secured notes19
Senior notes20
Floating rate notes21
Commercial paper and credit facility draws22

Union Gas Limited17

Medium-term notes
Senior debentures
Debentures
Commercial paper and credit facility draws

Westcoast Energy Inc.17
Senior secured notes
Medium-term notes
Debentures

Weighted Average
Interest Rate

Maturity

2017

2016

4.1%
4.4%
5.6%

2.3%

2.1%

6.2%

2.3%

4.5%
9.9%
1.4%

4.3%
2.9%

4.0%

4.5%
8.2%
1.5%

2022-2046
2019-2064
2077
2019-2020
2019-2022

2019

2018-2045
2067
2019-2022

2020-2050
2024
2019

2018-2044
2020

2040

2018-2046
2024
2019

4.0%

2040

4.1%

2019-2024

5.3%

2018-2038

6.1%
2.7%

2.0%

4.2%
8.7%
8.7%
1.3%

6.4%
4.7%
8.6%

2020
2018-2045
2020
2022

2018-2047
2018
2018-2025
2021

2019
2019-2041
2018-2026

5,889
5,698
3,843
2,254
2,729
3

—
490

6,328
501
1,820

3,695
85
960

1,750
755

1,207

4,525
200
1,438
4

315

501
—

1,665

138
7,192
501
2,824

3,490
75
250
485

4,968
4,498
1,007
1,171
4,672
4

14
126

6,781
537
2,226

3,904
85
351

2,075
225

1,342

4,525
200
1,032
4

323

537
564

—

—
—
—
—

—
—
—
—

66
2,177
525
1,114
(312)
65,180
(2,871)
(1,444)
60,865

—
—
—
—
(226)
40,945
(4,100)
(351)
36,494

Fair value adjustment - Spectra Energy acquisition
Other23
Total debt
Current maturities
Short-term borrowings24
Long-term debt
1  2017 - US$4,700 million; 2016 - US$3,700 million.
2  2017 - $1,650 million and US$1,750 million; 2016 - US$750 million. For the initial 10 years, the notes carry a fixed interest rate. 
Subsequently, the interest rate will be floating and set to equal the three-month Bankers' Acceptance Rate or London Interbank 
Offered Rate (LIBOR) plus a margin.  

150

151

 
 
3  The notes would be converted automatically into Conversion Preference Shares in the event of bankruptcy and related events. 
4  2017 - $750 million and US$1,200 million; 2016 - $500 million and US$500 million. Carries an interest rate equal to the three-

month Bankers' Acceptance Rate plus a margin of 59 basis points or LIBOR plus a margin of 40 or 70 basis points. 

5  2017 - $1,593 million and US$907 million; 2016 - $3,600 million and US$799 million.
6  Primarily capital lease obligations.
7  2016 - US$10 million.
8  2017 - US$391 million; 2016 - US$94 million.
9  2017 - US$5,050 million; 2016 - US$5,050 million.
10  2017 - US$400 million; 2016 - US$400 million. Carries an interest rate equal to the three-month LIBOR plus a margin of 379.75 

basis points. 

11  2017 - US$1,453 million; 2016 - US$1,658 million.
12  2017 - US$963 million; 2016 - US$1,000 million.
13  Included in medium-term notes is $100 million with a maturity date of 2112.
14  2017 - $1,080 million and US$286 million; 2016 - $750 million and US$210 million.
15  2017 - US$400 million; 2016 - US$400 million.
16  2016 - US$420 million.
17  Debt acquired on February 27, 2017 in conjunction with the Merger Transaction (Note 7).
18  2017 - US$1,329 million. 
19  2017 - US$110 million.
20  2017 - US$5,740 million. 
21  2017 - US$400 million. Carries an interest rate equal to the three-month LIBOR plus a margin of 70 basis points. 
22  2017 - US$2,254 million. 
23  Primarily debt discount and debt issue costs.
24  Weighted average interest rate - 1.4%; 2016 - 0.8%.

SECURED DEBT
Senior secured notes, totaling $206 million as at December 31, 2017, includes project financings for M&N 
Canada and Express-Platte System. Ownership interests in M&N Canada and certain of its accounts, 
revenues, business contracts and other assets are pledged as collateral. Express-Platte System notes 
payable are secured by the assignment of the Express-Platte System transportation receivables and by 
the Canadian portion of the Express-Platte pipeline system assets. 

CREDIT FACILITIES
The following table provides details of our committed credit facilities at December 31, 2017:  

2017

Total
Facilities

Draws1

Available

Maturity

December 31,
(millions of Canadian dollars)
Enbridge Inc.2
2,737
Enbridge (U.S.) Inc.
490
Enbridge Energy Partners, L.P.3
1,820
Enbridge Gas Distribution Inc.
972
Enbridge Income Fund
766
Enbridge Pipelines (Southern Lights) L.L.C.
—
Enbridge Pipelines Inc.
1,438
Enbridge Southern Lights LP
—
Spectra Energy Partners, LP4,5
2,824
Union Gas Limited5
485
Westcoast Energy Inc.5
—
Total committed credit facilities
11,532
1  Includes facility draws, letters of credit and commercial paper issuances that are back-stopped by the credit facility.
2  Includes $135 million, $157 million (US$125 million) and $150 million of commitments that expire in 2018, 2018 and 2020, 

2019-2022
2019
2019-2022
2019
2020
2019
2019
2019
2022
2021
2021

7,353
3,590
3,289
1,016
1,500
25
3,000
5
3,133
700
400
24,011

4,616
3,100
1,469
44
734
25
1,562
5
309
215
400
12,479

respectively.  

3  Includes $219 million (US$175 million) and $232 million (US$185 million) of commitments that expire in 2018 and 2020, 

respectively. 

4  Includes $421 million (US$336 million) of commitments that expire in 2021.  
5  Committed credit facilities acquired on February 27, 2017 in conjunction with the Merger Transaction (Note 7).

During the first quarter of 2017, Enbridge established a five-year, term credit facility for $239 million 
(¥20,000 million) with a syndicate of Japanese banks.  

152

153

In addition to the committed credit facilities noted above, we have $792 million of uncommitted demand 

credit facilities, of which $518 million were unutilized as at December 31, 2017. As at December 31, 2016, 

we had $335 million of uncommitted credit facilities, of which $177 million were unutilized. 

Credit facilities carry a weighted average standby fee of 0.2% per annum on the unused portion and 

draws bear interest at market rates. Certain credit facilities serve as a back-stop to the commercial paper 

programs and we have the option to extend such facilities, which are currently set to mature from 2019 to 

2022.

As at December 31, 2017 and 2016, commercial paper and credit facility draws, net of short-term 

borrowings and non-revolving credit facilities that mature within one year of $10,055 million and $7,344 

million, respectively, are supported by the availability of long-term committed credit facilities and therefore 

have been classified as long-term debt.

LONG-TERM DEBT ISSUANCES

The following are long-term debt issuances made during 2017 and 2016:

Company Issue Date

(millions of Canadian dollars unless otherwise stated)

Enbridge Inc.

Floating rate notes due May 20191

3.19% medium-term notes due December 2022

3.20% medium-term notes due June 2027

4.57% medium-term notes due March 2044

Floating rate notes due June 20202

2.90% senior notes due July 2022

3.70% senior notes due July 2027

Fixed-to-floating rate subordinated notes due July 20773

September 2017

Fixed-to-floating rate subordinated notes due September 20774

Fixed-to-floating rate subordinated notes due September 20774

Floating rate notes due January 20205

4.25% medium-term notes due December 2026

5.50% medium-term notes due December 2046

Fixed-to-floating rate subordinated notes due January 20776

May 2017

June 2017

June 2017

June 2017

June 2017

July 2017

July 2017

July 2017

October 2017

October 2017

November 2016

November 2016

December 2016

November 2017

3.51% medium-term notes due November 2047

August 2016

2.50% medium-term notes due August 2026

August 2016

August 2016

3.00% medium-term notes due August 2026

4.13% medium-term notes due August 2046

Enbridge Gas Distribution Inc.

Enbridge Pipelines Inc.

Spectra Energy Partners, LP

Union Gas Limited

November 2017

November 2017

2.88% medium-term notes due November 2027

3.59% medium-term notes due November 2047

June 2017

Floating rate notes due June 20207

US$400

1  Carries an interest rate equal to the three-month Bankers' Acceptance Rate plus 59 basis points. 

2  Carries an interest rate equal to the three-month LIBOR plus 70 basis points. 

3  Matures in 60 years and are callable on or after year 10. For the initial 10 years, the notes carry a fixed interest rate of 5.5%. 

Subsequently, the interest rate will be set to equal the three-month LIBOR plus a margin of 342 basis points from year 10 to 30, 

and a margin of 417 basis points from year 30 to 60.  

4  Matures in 60 years and are callable on or after year 10. For the initial 10 years, the notes carry a fixed interest rate of 5.4%. 

Subsequently, the interest rate will be set to equal the three-month Bankers' Acceptance Rate plus a margin of 325 basis points 

from year 10 to 30, and a margin of 400 basis points from year 30 to 60. 

5  Carries an interest rate equal to the three-month LIBOR plus 40 basis points. 

6  Matures in 60 years and are callable on or after year 10. For the initial 10 years, the notes carry a fixed interest rate of 6.0%. 

Subsequently, the interest rate will be set to equal the three-month LIBOR plus a margin of 389 basis points from year 10 to 30, 

and a margin of 464 basis points from year 30 to 60. 

7  Carries an interest rate equal to the three-month LIBOR plus 70 basis points.

Principal

Amount

750

450

450

300

US$500

US$700

US$700

US$1,000

1,000

650

US$700

US$750

US$750

US$750

300

300

400

400

250

250

 
 
 
 
 
 
3  The notes would be converted automatically into Conversion Preference Shares in the event of bankruptcy and related events. 

4  2017 - $750 million and US$1,200 million; 2016 - $500 million and US$500 million. Carries an interest rate equal to the three-

month Bankers' Acceptance Rate plus a margin of 59 basis points or LIBOR plus a margin of 40 or 70 basis points. 

5  2017 - $1,593 million and US$907 million; 2016 - $3,600 million and US$799 million.

In addition to the committed credit facilities noted above, we have $792 million of uncommitted demand 
credit facilities, of which $518 million were unutilized as at December 31, 2017. As at December 31, 2016, 
we had $335 million of uncommitted credit facilities, of which $177 million were unutilized. 

10  2017 - US$400 million; 2016 - US$400 million. Carries an interest rate equal to the three-month LIBOR plus a margin of 379.75 

13  Included in medium-term notes is $100 million with a maturity date of 2112.

14  2017 - $1,080 million and US$286 million; 2016 - $750 million and US$210 million.

15  2017 - US$400 million; 2016 - US$400 million.

16  2016 - US$420 million.

17  Debt acquired on February 27, 2017 in conjunction with the Merger Transaction (Note 7).

6  Primarily capital lease obligations.

7  2016 - US$10 million.

8  2017 - US$391 million; 2016 - US$94 million.

9  2017 - US$5,050 million; 2016 - US$5,050 million.

basis points. 

11  2017 - US$1,453 million; 2016 - US$1,658 million.

12  2017 - US$963 million; 2016 - US$1,000 million.

18  2017 - US$1,329 million. 

19  2017 - US$110 million.

20  2017 - US$5,740 million. 

22  2017 - US$2,254 million. 

23  Primarily debt discount and debt issue costs.

24  Weighted average interest rate - 1.4%; 2016 - 0.8%.

SECURED DEBT

21  2017 - US$400 million. Carries an interest rate equal to the three-month LIBOR plus a margin of 70 basis points. 

Senior secured notes, totaling $206 million as at December 31, 2017, includes project financings for M&N 

Canada and Express-Platte System. Ownership interests in M&N Canada and certain of its accounts, 

revenues, business contracts and other assets are pledged as collateral. Express-Platte System notes 

payable are secured by the assignment of the Express-Platte System transportation receivables and by 

the Canadian portion of the Express-Platte pipeline system assets. 

CREDIT FACILITIES

The following table provides details of our committed credit facilities at December 31, 2017:  

Maturity

Facilities

Draws1

Available

Total

7,353

3,590

3,289

1,016

1,500

25

3,000

5

3,133

700

400

2017

2,737

490

1,820

972

766

—

1,438

—

2,824

485

—

4,616

3,100

1,469

1,562

44

734

25

5

309

215

400

2019-2022

2019-2022

2019

2019

2020

2019

2019

2019

2022

2021

2021

Enbridge Pipelines (Southern Lights) L.L.C.

December 31,

(millions of Canadian dollars)

Enbridge Inc.2

Enbridge (U.S.) Inc.

Enbridge Energy Partners, L.P.3

Enbridge Gas Distribution Inc.

Enbridge Income Fund

Enbridge Pipelines Inc.

Enbridge Southern Lights LP

Spectra Energy Partners, LP4,5

Union Gas Limited5

Westcoast Energy Inc.5

Total committed credit facilities

respectively.  

respectively. 

1  Includes facility draws, letters of credit and commercial paper issuances that are back-stopped by the credit facility.

2  Includes $135 million, $157 million (US$125 million) and $150 million of commitments that expire in 2018, 2018 and 2020, 

24,011

11,532

12,479

3  Includes $219 million (US$175 million) and $232 million (US$185 million) of commitments that expire in 2018 and 2020, 

4  Includes $421 million (US$336 million) of commitments that expire in 2021.  

5  Committed credit facilities acquired on February 27, 2017 in conjunction with the Merger Transaction (Note 7).

During the first quarter of 2017, Enbridge established a five-year, term credit facility for $239 million 

(¥20,000 million) with a syndicate of Japanese banks.  

Credit facilities carry a weighted average standby fee of 0.2% per annum on the unused portion and 
draws bear interest at market rates. Certain credit facilities serve as a back-stop to the commercial paper 
programs and we have the option to extend such facilities, which are currently set to mature from 2019 to 
2022.

As at December 31, 2017 and 2016, commercial paper and credit facility draws, net of short-term 
borrowings and non-revolving credit facilities that mature within one year of $10,055 million and $7,344 
million, respectively, are supported by the availability of long-term committed credit facilities and therefore 
have been classified as long-term debt.

LONG-TERM DEBT ISSUANCES
The following are long-term debt issuances made during 2017 and 2016:

Company Issue Date
(millions of Canadian dollars unless otherwise stated)
Enbridge Inc.

May 2017
June 2017
June 2017
June 2017
June 2017
July 2017
July 2017
July 2017
September 2017
October 2017
October 2017
November 2016
November 2016
December 2016

Floating rate notes due May 20191
3.19% medium-term notes due December 2022
3.20% medium-term notes due June 2027
4.57% medium-term notes due March 2044
Floating rate notes due June 20202
2.90% senior notes due July 2022
3.70% senior notes due July 2027
Fixed-to-floating rate subordinated notes due July 20773
Fixed-to-floating rate subordinated notes due September 20774
Fixed-to-floating rate subordinated notes due September 20774
Floating rate notes due January 20205
4.25% medium-term notes due December 2026
5.50% medium-term notes due December 2046
Fixed-to-floating rate subordinated notes due January 20776

Enbridge Gas Distribution Inc.

November 2017
August 2016
Enbridge Pipelines Inc.
August 2016
August 2016

Spectra Energy Partners, LP

3.51% medium-term notes due November 2047
2.50% medium-term notes due August 2026

3.00% medium-term notes due August 2026
4.13% medium-term notes due August 2046

June 2017

Floating rate notes due June 20207

Union Gas Limited

November 2017
November 2017

2.88% medium-term notes due November 2027
3.59% medium-term notes due November 2047

Principal
Amount

750
450
450
300
US$500
US$700
US$700
US$1,000
1,000
650
US$700
US$750
US$750
US$750

300
300

400
400

US$400

250
250

1  Carries an interest rate equal to the three-month Bankers' Acceptance Rate plus 59 basis points. 
2  Carries an interest rate equal to the three-month LIBOR plus 70 basis points. 
3  Matures in 60 years and are callable on or after year 10. For the initial 10 years, the notes carry a fixed interest rate of 5.5%. 

Subsequently, the interest rate will be set to equal the three-month LIBOR plus a margin of 342 basis points from year 10 to 30, 
and a margin of 417 basis points from year 30 to 60.  

4  Matures in 60 years and are callable on or after year 10. For the initial 10 years, the notes carry a fixed interest rate of 5.4%. 

Subsequently, the interest rate will be set to equal the three-month Bankers' Acceptance Rate plus a margin of 325 basis points 
from year 10 to 30, and a margin of 400 basis points from year 30 to 60. 

5  Carries an interest rate equal to the three-month LIBOR plus 40 basis points. 
6  Matures in 60 years and are callable on or after year 10. For the initial 10 years, the notes carry a fixed interest rate of 6.0%. 

Subsequently, the interest rate will be set to equal the three-month LIBOR plus a margin of 389 basis points from year 10 to 30, 
and a margin of 464 basis points from year 30 to 60. 

7  Carries an interest rate equal to the three-month LIBOR plus 70 basis points.

152

153

 
 
 
 
 
 
LONG-TERM DEBT REPAYMENTS
The following are long-term debt repayments during 2017 and 2016:

Company
(millions of Canadian dollars unless otherwise stated)
Enbridge Inc.

Retirement/Repayment Date

March 2017
April 2017
June 2017
May 2016
August 2016
October 2016

Floating rate note
5.60% medium-term notes
Floating rate note
5.17% medium-term notes
5.00% medium-term notes
Floating rate note

Enbridge Energy Partners, L.P.

December 2016

5.88% senior notes

Enbridge Gas Distribution Inc.
April 2017
December 2017

Enbridge Income Fund

June 2017
December 2017
November 2016

Enbridge Pipelines (Southern Lights) L.L.C.

1.85% medium-term notes
5.16% medium-term

5.00% medium-term
2.92% medium-term
Floating rate note

June and December 2017
June and December 2016

3.98% medium-term note due June 2040
3.98% medium-term note due June 2040

Enbridge Southern Lights LP

June 2017
June and December 2016

4.01% medium-term note due June 2040
4.01% medium-term note due June 2040

Spectra Energy Capitals, LLC

July and September 20171,3
July 20172,3

8.00% senior notes due 2019
Senior notes carrying interest ranging from 3.3%
to 7.5% due 2018 to 2038

Spectra Energy Partners, LP

September 2017
June and December 2017

6.00% senior notes
7.39% subordinated secured notes

Union Gas Limited

Westcoast Energy Inc.

November 2017

9.70% debentures

May and November 2017
May and November 2017

6.90% senior secured
4.34% senior secured

Principal
Amount

500
US$400
US$500
400
300
US$350

US$300

300
200

100
225
330

US$37
US$30

7
14

US$500

US$761

US$400
US$12

125

26
24

1  On July 7, 2017 and September 8, 2017, Enbridge and Spectra Energy Capital, LLC (Spectra Capital) completed a cash tender 
offer for and follow-up redemption of Spectra Capital’s outstanding 8.0% senior unsecured notes due 2019. The aggregate 
principal amount tendered and redeemed was US$500 million. Spectra Capital paid the consenting note holders an aggregate 
cash consideration of US$581 million. 

2  On July 13, 2017, pursuant to a cash tender offer, Spectra Capital purchased a portion of the principal amount of its outstanding 
senior unsecured notes carrying interest rates ranging from 3.3% to 7.5%, with maturities ranging from one to 21 years. The 
principal amount tendered and accepted was US$761 million. Spectra Capital paid the consenting note holders an aggregate 
cash consideration of US$857 million. 

3  The loss on debt extinguishment of $50 million (US$38 million), net of the fair value adjustment recorded upon completion of the 

Merger Transaction, was reported within Interest expense in the Consolidated Statements of Earnings. 

DEBT COVENANTS

Our credit facility agreements and term debt indentures include standard events of default and covenant 

provisions whereby accelerated repayment and/or termination of the agreements may result if we were to 

default on payment or violate certain covenants. As at December 31, 2017, we were in compliance with 

all debt covenants.

INTEREST EXPENSE

Year ended December 31,

(millions of Canadian dollars)

Debentures and term notes

Commercial paper and credit facility draws

Amortization of fair value adjustment - Spectra Energy acquisition

Capitalized

2017

2016

2015

3,011

206

(270)

(391)

2,556

1,714

197

—

(321)

1,590

1,805

172

—

(353)

1,624

18.  ASSET RETIREMENT OBLIGATIONS 

Our AROs relate mostly to the retirement of pipelines, renewable power generation assets, obligations 

related to right-of way agreements and contractual leases for land use.

A reconciliation of movements in our ARO liabilities is as follows:

December 31,

(millions of Canadian dollars)

Obligations at beginning of year

Liabilities acquired

Liabilities incurred

Liabilities settled

Change in estimate

Accretion expense

Obligations at end of year

Presented as follows:

Accounts payable and other

Other long-term liabilities

Foreign currency translation adjustment

2017

2016

232

546

—

(22)

18

(12)

31

793

2

791

793

198

—

2

(33)

63

(5)

7

232

2

230

232

154

155

 
LONG-TERM DEBT REPAYMENTS

The following are long-term debt repayments during 2017 and 2016:

Company

Retirement/Repayment Date

(millions of Canadian dollars unless otherwise stated)

Enbridge Inc.

March 2017

April 2017

June 2017

May 2016

August 2016

October 2016

April 2017

December 2017

June 2017

December 2017

November 2016

Enbridge Energy Partners, L.P.

Enbridge Gas Distribution Inc.

Enbridge Income Fund

Enbridge Pipelines (Southern Lights) L.L.C.

Floating rate note

5.60% medium-term notes

Floating rate note

5.17% medium-term notes

5.00% medium-term notes

Floating rate note

1.85% medium-term notes

5.16% medium-term

5.00% medium-term

2.92% medium-term

Floating rate note

December 2016

5.88% senior notes

Enbridge Southern Lights LP

Spectra Energy Capitals, LLC

July 20172,3

Spectra Energy Partners, LP

June and December 2017

June and December 2016

3.98% medium-term note due June 2040

3.98% medium-term note due June 2040

June 2017

4.01% medium-term note due June 2040

June and December 2016

4.01% medium-term note due June 2040

July and September 20171,3

8.00% senior notes due 2019

Senior notes carrying interest ranging from 3.3%

to 7.5% due 2018 to 2038

September 2017

6.00% senior notes

June and December 2017

7.39% subordinated secured notes

Union Gas Limited

Westcoast Energy Inc.

November 2017

9.70% debentures

May and November 2017

May and November 2017

6.90% senior secured

4.34% senior secured

1  On July 7, 2017 and September 8, 2017, Enbridge and Spectra Energy Capital, LLC (Spectra Capital) completed a cash tender 

offer for and follow-up redemption of Spectra Capital’s outstanding 8.0% senior unsecured notes due 2019. The aggregate 

principal amount tendered and redeemed was US$500 million. Spectra Capital paid the consenting note holders an aggregate 

cash consideration of US$581 million. 

2  On July 13, 2017, pursuant to a cash tender offer, Spectra Capital purchased a portion of the principal amount of its outstanding 

senior unsecured notes carrying interest rates ranging from 3.3% to 7.5%, with maturities ranging from one to 21 years. The 

principal amount tendered and accepted was US$761 million. Spectra Capital paid the consenting note holders an aggregate 

cash consideration of US$857 million. 

3  The loss on debt extinguishment of $50 million (US$38 million), net of the fair value adjustment recorded upon completion of the 

Merger Transaction, was reported within Interest expense in the Consolidated Statements of Earnings. 

Principal

Amount

500

US$400

US$500

400

300

US$350

US$300

300

200

100

225

330

US$37

US$30

7

14

US$500

US$761

US$400

US$12

125

26

24

DEBT COVENANTS
Our credit facility agreements and term debt indentures include standard events of default and covenant 
provisions whereby accelerated repayment and/or termination of the agreements may result if we were to 
default on payment or violate certain covenants. As at December 31, 2017, we were in compliance with 
all debt covenants.

INTEREST EXPENSE

Year ended December 31,
(millions of Canadian dollars)
Debentures and term notes
Commercial paper and credit facility draws
Amortization of fair value adjustment - Spectra Energy acquisition
Capitalized

2017

2016

2015

3,011
206
(270)
(391)
2,556

1,714
197
—
(321)
1,590

1,805
172
—
(353)
1,624

18.  ASSET RETIREMENT OBLIGATIONS 

Our AROs relate mostly to the retirement of pipelines, renewable power generation assets, obligations 
related to right-of way agreements and contractual leases for land use.

A reconciliation of movements in our ARO liabilities is as follows:

December 31,
(millions of Canadian dollars)
Obligations at beginning of year
Liabilities acquired
Liabilities incurred
Liabilities settled
Change in estimate
Foreign currency translation adjustment
Accretion expense
Obligations at end of year
Presented as follows:

Accounts payable and other
Other long-term liabilities

2017

2016

232
546
—
(22)
18
(12)
31
793

2
791
793

198
—
2
(33)
63
(5)
7
232

2
230
232

154

155

 
19.  NONCONTROLLING INTERESTS 

NONCONTROLLING INTERESTS
The following table provides additional information regarding Noncontrolling interests as presented in our 
Consolidated Statements of Financial Position: 

December 31,
(millions of Canadian dollars)
Enbridge Energy Management, L.L.C.1
Enbridge Energy Partners, L.P.2
Enbridge Gas Distribution Inc.3
Renewable energy assets4
Spectra Energy Partners, LP5,8
Union Gas Limited6,8
Westcoast Energy Inc.7,8
Other

2017

2016

34
157
100
806
5,385
110
1,005
—
7,597

36
(99)
100
516
—
—
—
24
577

1  Represents the 88.3% of the listed shares of Enbridge Energy Management, L.L.C. (EEM) not held by us as at December 31, 

2017 and 2016. 

2  Represents the 68.2% and 80.2% interest in EEP held by public unitholders as well as interests of third parties in subsidiaries of 

EEP as at December 31, 2017 and 2016, respectively.

3  Represents the four million cumulative redeemable preferred shares held by third parties in EGD as at December 31, 2017 and 

2016.

4  Represents the tax equity investors' interests in our Magic Valley, Wildcat, Keechi, New Creek and Chapman Ranch wind farms, 

which are accounted for using the HLBV method, with an additional 20.0% noncontrolling interest in each of the Magic Valley and 
Wildcat wind farms held by third parties as at December 31, 2017 and 2016. 

5  Represents the 25.7% interest in SEP held by public unitholders as at December 31, 2017.
6  Represents the four million cumulative redeemable preferred shares held by third parties in Union Gas as at December 31, 2017. 
7  Represents the 16.6 million cumulative redeemable preferred shares and 12 million cumulative first preferred shares as at 

December 31, 2017 held by third parties in Westcoast Energy Inc., and the 22.0% interest in Maritimes & Northeast Pipeline 
Limited Partnership held by third parties.

8  Represents noncontrolling interests resulting from the Merger Transaction (Note 7).

Enbridge Energy Partners, L.P.
United States Sponsored Vehicle Strategy
On April 28, 2017, we completed a strategic review of EEP and took the actions described below. As a 
result of these actions, we recorded an increase in Noncontrolling interests of $458 million, inclusive of 
foreign currency translation adjustments, and a decrease in Additional paid-in capital of $421 million, net 
of deferred income taxes of $253 million. 

Acquisition of Midcoast Assets and Privatization of Midcoast Energy Partners, L.P.
On April 27, 2017, we completed our previously-announced merger through a wholly-owned subsidiary, 
through which we privatized MEP by acquiring all of the outstanding publicly-held common units of MEP 
for total consideration of approximately US$170 million.

On June 28, 2017, we acquired, through a wholly-owned subsidiary, all of EEP’s interest in the Midcoast 
gas gathering and processing business for cash consideration of US$1.3 billion plus existing 
indebtedness of MEP of US$953 million.

As a result of the above transactions, 100% of the Midcoast gas gathering and processing business is 
now owned by us. 

EEP Strategic Restructuring Actions

On April 27, 2017, EEP redeemed all of its outstanding Series 1 Preferred Units held by us at face value 

of US$1.2 billion through the issuance of 64.3 million Class A common units to us. We also irrevocably 

waived all of our rights associated with our ownership of 66.1 million Class D units and 1,000 Incentive 

Distribution Units of EEP, in exchange for the issuance of 1,000 Class F units. The Class F units are 

entitled to (i) 13% of all distributions in excess of US$0.295 per EEP unit, but equal to or less than US

$0.35 per EEP unit, and (ii) 23% of all distributions in excess of US$0.35 per EEP unit. The irrevocable 

waiver was effective with respect to distributions declared with a record date after April 27, 2017. In 

connection with these strategic restructuring actions, EEP reduced its quarterly distribution from US

$0.583 per unit to US$0.35 per unit. Further, in conjunction with the restructuring actions, EEP terminated 

a receivable purchase agreement with a special purpose entity wholly-owned by us.

Finalization of Bakken Pipeline System Joint Funding Agreement

On April 27, 2017, we entered into a joint funding arrangement with EEP. Pursuant to this joint funding 

arrangement, we own 75% and EEP owns 25% of the combined 27.6% effective interest in the Bakken 

Pipeline System. Under this arrangement, EEP retains a five-year option to acquire an additional 20% 

interest in the Bakken Pipeline System. Upon the execution of the joint funding arrangement, EEP repaid 

the outstanding balance on its US$1.5 billion credit agreement with us, which it had drawn upon to fund 

the initial purchase.

Drop Down of Interest to Enbridge Energy Partners, L.P.

On January 2, 2015, we transferred our 66.7% interest in the United States segment of the Alberta 

Clipper pipeline, held through a wholly-owned subsidiary, to EEP for aggregate consideration of $1.1 

billion (US$1 billion), consisting of approximately $814 million (US$694 million) of Class E equity units 

issued to us by EEP and the repayment of approximately $359 million (US$306 million) of indebtedness 

owed to us. Prior to the transfer, EEP owned the remaining 33.3% interest in the United States segment 

of the Alberta Clipper pipeline. As a result of this transfer, we recorded a decrease in Noncontrolling 

interests of $304 million and increases in Additional paid-in capital and Deferred income tax liabilities of 

$218 million and $86 million, respectively. 

Other 

The EEP partnership agreement does not permit capital deficits to accumulate in the capital accounts of 

any limited partner and thus requires that such capital account deficits be "cured" by additional allocations 

from the positive capital accounts of the other limited partners and the General Partner, generally on a 

pro-rata basis. Further, as outlined in the EEP partnership agreement, when a limited partner's capital 

accounts have positive capital balances, such limited partner must allocate its earnings to the General 

Partner of EEP to reimburse them for previous curing allocations. As a result, earnings attributable to 

noncontrolling interests in the Consolidated Statements of Earnings for the years ended December 31, 

2017 and 2016 were lower by $73 million and higher by $816 million, respectively, due to these 

reallocations. 

On March 13, 2015, EEP completed a public common unit issuance. We participated only to the extent to 

maintain our 2% general partner interest. The common unit issuance resulted in contributions of $366 

million (US$289 million) from noncontrolling interest holders.

156

157

 
 
 
 
 
19.  NONCONTROLLING INTERESTS 

NONCONTROLLING INTERESTS

Consolidated Statements of Financial Position: 

The following table provides additional information regarding Noncontrolling interests as presented in our 

December 31,

(millions of Canadian dollars)

Enbridge Energy Management, L.L.C.1

Enbridge Energy Partners, L.P.2

Enbridge Gas Distribution Inc.3

Renewable energy assets4

Spectra Energy Partners, LP5,8

Union Gas Limited6,8

Westcoast Energy Inc.7,8

Other

2017

2016

34

157

100

806

5,385

110

1,005

—

7,597

36

(99)

100

516

—

—

—

24

577

1  Represents the 88.3% of the listed shares of Enbridge Energy Management, L.L.C. (EEM) not held by us as at December 31, 

2  Represents the 68.2% and 80.2% interest in EEP held by public unitholders as well as interests of third parties in subsidiaries of 

EEP as at December 31, 2017 and 2016, respectively.

3  Represents the four million cumulative redeemable preferred shares held by third parties in EGD as at December 31, 2017 and 

2017 and 2016. 

2016.

4  Represents the tax equity investors' interests in our Magic Valley, Wildcat, Keechi, New Creek and Chapman Ranch wind farms, 

which are accounted for using the HLBV method, with an additional 20.0% noncontrolling interest in each of the Magic Valley and 

Wildcat wind farms held by third parties as at December 31, 2017 and 2016. 

5  Represents the 25.7% interest in SEP held by public unitholders as at December 31, 2017.

6  Represents the four million cumulative redeemable preferred shares held by third parties in Union Gas as at December 31, 2017. 

7  Represents the 16.6 million cumulative redeemable preferred shares and 12 million cumulative first preferred shares as at 

December 31, 2017 held by third parties in Westcoast Energy Inc., and the 22.0% interest in Maritimes & Northeast Pipeline 

Limited Partnership held by third parties.

8  Represents noncontrolling interests resulting from the Merger Transaction (Note 7).

Enbridge Energy Partners, L.P.

United States Sponsored Vehicle Strategy

On April 28, 2017, we completed a strategic review of EEP and took the actions described below. As a 

result of these actions, we recorded an increase in Noncontrolling interests of $458 million, inclusive of 

foreign currency translation adjustments, and a decrease in Additional paid-in capital of $421 million, net 

of deferred income taxes of $253 million. 

Acquisition of Midcoast Assets and Privatization of Midcoast Energy Partners, L.P.

On April 27, 2017, we completed our previously-announced merger through a wholly-owned subsidiary, 

through which we privatized MEP by acquiring all of the outstanding publicly-held common units of MEP 

for total consideration of approximately US$170 million.

On June 28, 2017, we acquired, through a wholly-owned subsidiary, all of EEP’s interest in the Midcoast 

gas gathering and processing business for cash consideration of US$1.3 billion plus existing 

indebtedness of MEP of US$953 million.

As a result of the above transactions, 100% of the Midcoast gas gathering and processing business is 

now owned by us. 

EEP Strategic Restructuring Actions
On April 27, 2017, EEP redeemed all of its outstanding Series 1 Preferred Units held by us at face value 
of US$1.2 billion through the issuance of 64.3 million Class A common units to us. We also irrevocably 
waived all of our rights associated with our ownership of 66.1 million Class D units and 1,000 Incentive 
Distribution Units of EEP, in exchange for the issuance of 1,000 Class F units. The Class F units are 
entitled to (i) 13% of all distributions in excess of US$0.295 per EEP unit, but equal to or less than US
$0.35 per EEP unit, and (ii) 23% of all distributions in excess of US$0.35 per EEP unit. The irrevocable 
waiver was effective with respect to distributions declared with a record date after April 27, 2017. In 
connection with these strategic restructuring actions, EEP reduced its quarterly distribution from US
$0.583 per unit to US$0.35 per unit. Further, in conjunction with the restructuring actions, EEP terminated 
a receivable purchase agreement with a special purpose entity wholly-owned by us.

Finalization of Bakken Pipeline System Joint Funding Agreement
On April 27, 2017, we entered into a joint funding arrangement with EEP. Pursuant to this joint funding 
arrangement, we own 75% and EEP owns 25% of the combined 27.6% effective interest in the Bakken 
Pipeline System. Under this arrangement, EEP retains a five-year option to acquire an additional 20% 
interest in the Bakken Pipeline System. Upon the execution of the joint funding arrangement, EEP repaid 
the outstanding balance on its US$1.5 billion credit agreement with us, which it had drawn upon to fund 
the initial purchase.

Drop Down of Interest to Enbridge Energy Partners, L.P.
On January 2, 2015, we transferred our 66.7% interest in the United States segment of the Alberta 
Clipper pipeline, held through a wholly-owned subsidiary, to EEP for aggregate consideration of $1.1 
billion (US$1 billion), consisting of approximately $814 million (US$694 million) of Class E equity units 
issued to us by EEP and the repayment of approximately $359 million (US$306 million) of indebtedness 
owed to us. Prior to the transfer, EEP owned the remaining 33.3% interest in the United States segment 
of the Alberta Clipper pipeline. As a result of this transfer, we recorded a decrease in Noncontrolling 
interests of $304 million and increases in Additional paid-in capital and Deferred income tax liabilities of 
$218 million and $86 million, respectively. 

Other 
The EEP partnership agreement does not permit capital deficits to accumulate in the capital accounts of 
any limited partner and thus requires that such capital account deficits be "cured" by additional allocations 
from the positive capital accounts of the other limited partners and the General Partner, generally on a 
pro-rata basis. Further, as outlined in the EEP partnership agreement, when a limited partner's capital 
accounts have positive capital balances, such limited partner must allocate its earnings to the General 
Partner of EEP to reimburse them for previous curing allocations. As a result, earnings attributable to 
noncontrolling interests in the Consolidated Statements of Earnings for the years ended December 31, 
2017 and 2016 were lower by $73 million and higher by $816 million, respectively, due to these 
reallocations. 

On March 13, 2015, EEP completed a public common unit issuance. We participated only to the extent to 
maintain our 2% general partner interest. The common unit issuance resulted in contributions of $366 
million (US$289 million) from noncontrolling interest holders.

156

157

 
 
 
 
 
REDEEMABLE NONCONTROLLING INTERESTS
The following table presents additional information regarding Redeemable noncontrolling interests as 
presented in our Consolidated Statements of Financial Position: 

Year ended December 31,
(millions of Canadian dollars)
Balance at beginning of year

Earnings/(loss) attributable to redeemable noncontrolling interests
Other comprehensive income/(loss), net of tax

Change in unrealized loss on cash flow hedges
Other comprehensive loss from equity investees
Reclassification to earnings of loss on cash flow hedges
Foreign currency translation adjustments

Other comprehensive income/(loss), net of tax
Distributions to unitholders
Contributions from unitholders
Reversal  of  cumulative  redemption  value  adjustment  attributable  to 

ECT preferred units

Net dilution loss
Redemption value adjustment
Balance at end of year

2017

3,392
175

(21)
—
57
(6)
30
(247)
1,178

—
(169)
(292)
4,067

2016

2015

2,141
268

2,249
(3)

(17)
—
9
(3)
(11)
(202)
591

—
(81)
686
3,392

(7)
(12)
4
18
3
(114)
670

(541)
(482)
359
2,141

Redeemable noncontrolling interests in the Fund as at December 31, 2017, 2016 and 2015 represented 
56.5%, 45.6% and 40.7%, respectively, of interests in the Fund’s trust units that are held by third parties.

Common Share Issuances
During the years ended December 31, 2017, 2016 and 2015, the following occurred: 

Year ended December 31,
(millions of Canadian dollars)
ENF issuance of common shares1:
Gross proceeds from the public
Gross proceeds from us2
ENF purchase of Fund trust units1,3:
Contributions from redeemable noncontrolling interest holders, net

of share issue costs

Dilution gain/(loss) for redeemable noncontrolling interests
Dilution gain/(loss) in Additional paid-in capital
ECT purchase of EIPLP Class A units1,4:
Proceeds used by ECT to purchase EIPLP Class A units

  Dilution loss for redeemable noncontrolling interests
  Dilution gain in Additional paid-in capital
ENF purchase of Fund trust units5:
Contributions from redeemable noncontrolling interest holders
Dilution gain/(loss) for redeemable noncontrolling interests
Dilution gain/(loss) in Additional paid-in capital

2017

2016

2015

575
143

552
5
(5)

718
(123)
123

51
(5)
5

575
143

551
(4)
4

718
(103)
103

40
(4)
4

700
174

670
(355)
355

874
(132)
132

—
—
—

1  These transactions occurred in December 2017, April 2016 and November 2015.
2  Concurrent with the public offerings, we subscribed for ENF common shares on a private placement basis to maintain our 19.9% 

ownership interest in ENF. 

3  ENF used the proceeds from the common share issuances to purchase additional trust units of the Fund. We did not participate in 
these offerings, resulting in increases in redeemable noncontrolling interests (2017 - 53.6% to 56.5%; 2016 - 40.7% to 45.6%; 
2015 - 34.3% to 40.7%). 

4  The Fund used a portion of the proceeds from the trust unit issuances to purchase additional common units of ECT, and ECT 
used the proceeds to purchase additional Class A units of EIPLP, resulting in dilution losses for ECT. These dilution losses 
resulted in dilution losses for the Fund’s equity investment in ECT and the above-noted dilution gains/(losses) for redeemable 
noncontrolling interests and Additional paid-in capital. 

5  For the years ended December 31, 2017, 2016 and 2015, ENF used cash in respect of reinvested dividends and option cash 

payments from its Dividend Reinvestment Plan (DRIP) to purchase 1.6 million, 1.3 million and nil Fund trust units, respectively, on 
behalf of the public.

Further to the above, in April 2017, Enbridge and ENF completed the secondary public offering of ENF 

common shares for gross proceeds of $575 million (the Secondary Offering). To effect the Secondary 

Offering, we exchanged 21,657,617 Fund units we owned for an equivalent amount of ENF common 

shares. In order to maintain our 19.9% interest in ENF, we retained 4,309,867 of the common shares we 

received in the exchange, and sold the balance through the Secondary Offering. Upon closing of the 

Secondary Offering, our total economic interest in ENF decreased from 86.9% to 84.6% and redeemable 

noncontrolling interests increased from 45.6% to 53.7%. As a result of the Secondary Offering, we 

recorded a dilution loss for redeemable noncontrolling interests of $87 million and a dilution gain in 

Additional paid-in capital of $87 million.

Canadian Restructuring Plan

In September 2015, our unitholdings in the Fund increased upon closing of the Canadian Restructuring 

Plan (Note 1), resulting in a decrease in redeemable noncontrolling interests. 

Upon closing of the Canadian Restructuring Plan, ECT, an equity investment of the Fund, reclassified its 

Preferred Units from mezzanine equity to liabilities. Accordingly, ECT reduced the recorded redemption 

value of its Preferred Units to their aggregate par value, resulting in an increase to the Fund’s equity 

investment in ECT. This resulted in an adjustment to redeemable noncontrolling interests of approximately 

$541 million.

Upon closing of the Canadian Restructuring Plan, EIPLP, an indirect equity investment of the Fund, 

issued Special Interest Rights to us which are entitled to Temporary Performance Distribution Rights 

(TPDR) distributions. TPDR distributions occur when the Fund distribution rate exceeds a payout target 

and are paid in the form of Class D units. The Class D unitholders receive a distribution each month equal 

to the per unit amount paid on Class C units of EIPLP, but to be paid in kind in additional Class D units. 

The issuances of TPDR and additional Class D units resulted in a dilution gain for the Fund’s indirect 

equity investment in EIPLP, a dilution gain for redeemable noncontrolling interests of $41 million, $30 

million and $5 million for the years ended December 31, 2017, 2016 and 2015, respectively, with 

offsetting dilution losses in Additional paid-in capital. 

Our authorized share capital consists of an unlimited number of common shares with no par value and an 

20.  SHARE CAPITAL 

unlimited number of preference shares.

COMMON SHARES

December 31,

(millions of Canadian dollars; number of

shares in millions)

Balance at beginning of year

Common shares issued1

Common shares issued in 

Merger Transaction (Note 7)

Dividend Reinvestment and

Share Purchase Plan

Shares issued on exercise of

stock options

Balance at end of year

2017

Number

of Shares

2016

Number

2015

Number

Amount of Shares

Amount of Shares

Amount

943

33

691

25

3

10,492

1,500

37,429

1,226

90

1,695

50,737

868

56

—

16

3

943

7,391

2,241

—

795

65

10,492

852

—

—

12

4

868

6,669

—

—

646

76

7,391

1    Gross proceeds of $1.5 billion, $2.3 billion and nil for the years ended December 31, 2017, 2016 and 2015, respectively; net 

issuance costs of nil, $59 million and nil for the years ended December 31, 2017, 2016 and 2015, respectively. 

158

159

 
 
 
 
REDEEMABLE NONCONTROLLING INTERESTS

The following table presents additional information regarding Redeemable noncontrolling interests as 

presented in our Consolidated Statements of Financial Position: 

Year ended December 31,

(millions of Canadian dollars)

Balance at beginning of year

Earnings/(loss) attributable to redeemable noncontrolling interests

Other comprehensive income/(loss), net of tax

Change in unrealized loss on cash flow hedges

Other comprehensive loss from equity investees

Reclassification to earnings of loss on cash flow hedges

Foreign currency translation adjustments

Other comprehensive income/(loss), net of tax

Reversal  of  cumulative  redemption  value  adjustment  attributable  to 

Distributions to unitholders

Contributions from unitholders

ECT preferred units

Net dilution loss

Redemption value adjustment

Balance at end of year

Year ended December 31,

(millions of Canadian dollars)

ENF issuance of common shares1:

Gross proceeds from the public

Gross proceeds from us2

ENF purchase of Fund trust units1,3:

Contributions from redeemable noncontrolling interest holders, net

of share issue costs

Dilution gain/(loss) for redeemable noncontrolling interests

Dilution gain/(loss) in Additional paid-in capital

ECT purchase of EIPLP Class A units1,4:

Proceeds used by ECT to purchase EIPLP Class A units

  Dilution loss for redeemable noncontrolling interests

  Dilution gain in Additional paid-in capital

ENF purchase of Fund trust units5:

Contributions from redeemable noncontrolling interest holders

Dilution gain/(loss) for redeemable noncontrolling interests

Dilution gain/(loss) in Additional paid-in capital

1  These transactions occurred in December 2017, April 2016 and November 2015.

2017

3,392

175

(21)

—

57

(6)

30

(247)

1,178

—

(169)

(292)

4,067

575

143

552

5

(5)

718

(123)

123

51

(5)

5

2016

2015

2,141

268

2,249

(3)

(17)

—

9

(3)

(11)

(202)

591

—

(81)

686

(7)

(12)

4

18

3

(114)

670

(541)

(482)

359

3,392

2,141

575

143

551

(4)

4

718

(103)

103

40

(4)

4

700

174

670

(355)

355

874

(132)

132

—

—

—

Redeemable noncontrolling interests in the Fund as at December 31, 2017, 2016 and 2015 represented 

56.5%, 45.6% and 40.7%, respectively, of interests in the Fund’s trust units that are held by third parties.

Common Share Issuances

During the years ended December 31, 2017, 2016 and 2015, the following occurred: 

2017

2016

2015

2  Concurrent with the public offerings, we subscribed for ENF common shares on a private placement basis to maintain our 19.9% 

3  ENF used the proceeds from the common share issuances to purchase additional trust units of the Fund. We did not participate in 

these offerings, resulting in increases in redeemable noncontrolling interests (2017 - 53.6% to 56.5%; 2016 - 40.7% to 45.6%; 

ownership interest in ENF. 

2015 - 34.3% to 40.7%). 

4  The Fund used a portion of the proceeds from the trust unit issuances to purchase additional common units of ECT, and ECT 

used the proceeds to purchase additional Class A units of EIPLP, resulting in dilution losses for ECT. These dilution losses 

resulted in dilution losses for the Fund’s equity investment in ECT and the above-noted dilution gains/(losses) for redeemable 

noncontrolling interests and Additional paid-in capital. 

5  For the years ended December 31, 2017, 2016 and 2015, ENF used cash in respect of reinvested dividends and option cash 

payments from its Dividend Reinvestment Plan (DRIP) to purchase 1.6 million, 1.3 million and nil Fund trust units, respectively, on 

behalf of the public.

Further to the above, in April 2017, Enbridge and ENF completed the secondary public offering of ENF 
common shares for gross proceeds of $575 million (the Secondary Offering). To effect the Secondary 
Offering, we exchanged 21,657,617 Fund units we owned for an equivalent amount of ENF common 
shares. In order to maintain our 19.9% interest in ENF, we retained 4,309,867 of the common shares we 
received in the exchange, and sold the balance through the Secondary Offering. Upon closing of the 
Secondary Offering, our total economic interest in ENF decreased from 86.9% to 84.6% and redeemable 
noncontrolling interests increased from 45.6% to 53.7%. As a result of the Secondary Offering, we 
recorded a dilution loss for redeemable noncontrolling interests of $87 million and a dilution gain in 
Additional paid-in capital of $87 million.

Canadian Restructuring Plan
In September 2015, our unitholdings in the Fund increased upon closing of the Canadian Restructuring 
Plan (Note 1), resulting in a decrease in redeemable noncontrolling interests. 

Upon closing of the Canadian Restructuring Plan, ECT, an equity investment of the Fund, reclassified its 
Preferred Units from mezzanine equity to liabilities. Accordingly, ECT reduced the recorded redemption 
value of its Preferred Units to their aggregate par value, resulting in an increase to the Fund’s equity 
investment in ECT. This resulted in an adjustment to redeemable noncontrolling interests of approximately 
$541 million.

Upon closing of the Canadian Restructuring Plan, EIPLP, an indirect equity investment of the Fund, 
issued Special Interest Rights to us which are entitled to Temporary Performance Distribution Rights 
(TPDR) distributions. TPDR distributions occur when the Fund distribution rate exceeds a payout target 
and are paid in the form of Class D units. The Class D unitholders receive a distribution each month equal 
to the per unit amount paid on Class C units of EIPLP, but to be paid in kind in additional Class D units. 
The issuances of TPDR and additional Class D units resulted in a dilution gain for the Fund’s indirect 
equity investment in EIPLP, a dilution gain for redeemable noncontrolling interests of $41 million, $30 
million and $5 million for the years ended December 31, 2017, 2016 and 2015, respectively, with 
offsetting dilution losses in Additional paid-in capital. 

20.  SHARE CAPITAL 

Our authorized share capital consists of an unlimited number of common shares with no par value and an 
unlimited number of preference shares.

COMMON SHARES

December 31,
(millions of Canadian dollars; number of
shares in millions)
Balance at beginning of year
Common shares issued1
Common shares issued in 

Merger Transaction (Note 7)
Dividend Reinvestment and
Share Purchase Plan

Shares issued on exercise of

stock options

2017

2016

2015

Number
of Shares

Number
Amount of Shares

Number
Amount of Shares

Amount

943
33

691

10,492
1,500

37,429

25

1,226

868
56

—

16

7,391
2,241

—

795

852
—

—

12

6,669
—

—

646

Balance at end of year
1    Gross proceeds of $1.5 billion, $2.3 billion and nil for the years ended December 31, 2017, 2016 and 2015, respectively; net 

3
1,695

90
50,737

3
943

65
10,492

4
868

76
7,391

158

159

issuance costs of nil, $59 million and nil for the years ended December 31, 2017, 2016 and 2015, respectively. 

 
 
 
 
PREFERENCE SHARES

Characteristics of the preference shares are as follows: 

December 31,
(millions of Canadian dollars; number of
shares in millions)
Preference Shares, Series A
Preference Shares, Series B
Preference Shares, Series C
Preference Shares, Series D
Preference Shares, Series F
Preference Shares, Series H
Preference Shares, Series J
Preference Shares, Series L
Preference Shares, Series N
Preference Shares, Series P
Preference Shares, Series R
Preference Shares, Series 1
Preference Shares, Series 3
Preference Shares, Series 5
Preference Shares, Series 7
Preference Shares, Series 9
Preference Shares, Series 11
Preference Shares, Series 13
Preference Shares, Series 15
Preference Shares, Series 17
Preference Shares, Series 19
Issuance costs
Balance at end of year

2017

2016

2015

Number
of Shares

Number
Amount of Shares

Number
Amount of Shares

Amount

5
18
2
18
20
14
8
16
18
16
16
16
24
8
10
11
20
14
11
30
20

125
457
43
450
500
350
199
411
450
400
400
411
600
206
250
275
500
350
275
750
500
(155)
7,747

5
20
—
18
20
14
8
16
18
16
16
16
24
8
10
11
20
14
11
30
—

125
500
—
450
500
350
199
411
450
400
400
411
600
206
250
275
500
350
275
750
—
(147)
7,255

5
20
—
18
20
14
8
16
18
16
16
16
24
8
10
11
20
14
11
—
—

125
500
—
450
500
350
199
411
450
400
400
411
600
206
250
275
500
350
275
—
—
(137)
6,515

(Canadian dollars unless otherwise stated)

Preference Shares, Series A

Preference Shares, Series B5

3-month treasury bill

plus 2.400%

Preference Shares, Series C5

Preference Shares, Series D6

Preference Shares, Series F

Preference Shares, Series H

Preference Shares, Series J7

Preference Shares, Series L7

Preference Shares, Series N

Preference Shares, Series P

Preference Shares, Series R

Preference Shares, Series 1

Preference Shares, Series 3

Preference Shares, Series 5

Preference Shares, Series 7

Preference Shares, Series 9

Preference Shares, Series 11

Preference Shares, Series 13

Preference Shares, Series 15

Preference Shares, Series 17

Preference Shares, Series 19

Dividend Rate

Dividend1

Per Share Base

Redemption

Value2

Redemption and

Conversion

Option Date2,3

Right to

Convert

Into3,4

5.50%

3.42%

$1.37500

$0.85360

—

$1.00000

$1.00000

$1.00000

4.00%

4.00%

4.00%

4.89% US$1.22160

4.96% US$1.23972

4.00%

4.00%

4.00%

$1.00000

$1.00000

$1.00000

4.00% US$1.00000

4.00%

$1.00000

4.40% US$1.10000

4.40%

4.40%

4.40%

4.40%

4.40%

5.15%

4.90%

$1.10000

$1.10000

$1.10000

$1.10000

$1.10000

$1.28750

$1.22500

$25

$25

$25

$25

$25

—

—

June 1, 2022

Series C

June 1, 2022

Series B

March 1, 2018

Series E

June 1, 2018

Series G

$25 September 1, 2018

Series I

US$25

June 1, 2022

Series K

US$25 September 1, 2022

Series M

$25

$25

$25

US$25

US$25

$25

$25

$25

$25

$25

$25

December 1, 2018

March 1, 2019

June 1, 2019

June 1, 2018

$25 September 1, 2019

March 1, 2019

March 1, 2019

Series O

Series Q

Series S

Series 2

Series 4

Series 6

Series 8

December 1, 2019 Series 10

March 1, 2020 Series 12

June 1, 2020 Series 14

$25 September 1, 2020 Series 16

March 1, 2022 Series 18

March 1, 2023 Series 20

1  The holder is entitled to receive a fixed, cumulative, quarterly preferential dividend, as declared by the Board of Directors. With 

the exception of Series A and Series C Preference Shares, such fixed dividend rate resets every five years beginning on the initial 

redemption and conversion option date. The Series 17 and Series 19 Preference Shares contain a feature where the fixed 

dividend rate, when reset every five years, will not be less than 5.15% and 4.90%, respectively. No other series of Preference 

Shares has this feature. 

2  Series A Preference Shares may be redeemed any time at our option. For all other series of Preference Shares, we, may at our 

option, redeem all or a portion of the outstanding Preference Shares for the Base Redemption Value per share plus all accrued 

and unpaid dividends on the Redemption Option Date and on every fifth anniversary thereafter. 

3  The holder will have the right, subject to certain conditions, to convert their shares into Cumulative Redeemable Preference 

Shares of a specified series on a one-for-one basis on the Conversion Option Date and every fifth anniversary thereafter at an 

ascribed issue price equal to the Base Redemption Value. 

4  With the exception of Series A Preference Shares, after the redemption and conversion option dates, holders may elect to receive 

quarterly floating rate cumulative dividends per share at a rate equal to: $25 x (number of days in quarter/365) x 90 day 

Government of Canada treasury bill rate + 2.4% (Series C), 2.4% (Series E), 2.5% (Series G), 2.1% (Series I), 2.7% (Series O), 

2.5% (Series Q), 2.5% (Series S), 2.4% (Series 4), 2.6% (Series 8), 2.7% (Series 10), 2.6% (Series 12), 2.7% (Series 14), 2.7% 

(Series 16), 4.1% (Series 18) or 3.2% (Series 20); or US$25 x (number of days in quarter/365) x three-month United States 

Government treasury bill rate + 3.1% (Series K), 3.2% (Series M), 3.1% (Series 2) or 2.8% (Series 6). 

5  On June 1, 2017, 1,730,188 of Series B fixed rate Preference Shares were converted to Series C floating rate Preference Shares 

based upon preference share holder elections under the terms of the Series B Preference Shares. The quarterly dividend amount 

for the Series B Preference Shares was decreased to $0.21340 from $0.25000 on June 1, 2017, due to the reset of the annual 

dividend rate on every fifth anniversary of the date of issuance of the Series B Preference Shares. The quarterly dividend amount 

for the Series C Preference Shares was set at $0.18600 on June 1, 2017, $0.19571 on September 1, 2017 and $0.20342 on 

December 1, 2017, due to reset on a quarterly basis following the issuance thereof. 

6  On January 30, 2018, we announced that we do not intend to exercise our right to redeem our Series D Preference Shares on 

March 1, 2018. As a result, until February 14, 2018, the holders of such shares had the right to convert all or part of their Series D 

fixed rate Preference Shares on a one-for-one basis into Series E floating rate Preference Shares. As of February 14, 2018, less 

than the 1,000,000 Series D Preference Shares required to give effect to conversions into Series E Preference Shares were 

tendered for conversion. As a result, none of our outstanding Series D Preference Shares will be converted into Series E  

Preference Shares on March 1, 2018. However, on March 1, 2018, the quarterly dividend amount for the Series D Preference 

Shares will be increased to $0.27875 from $0.25000, due to the reset of the annual dividend rate on every fifth anniversary of the 

date of issuance of the Series D Preference Shares. 

7  No Series J or Series L Preference Shares were converted on the June 1, 2017 and September 1, 2017 conversion option dates, 

respectively. However, the quarterly dividend amounts for the Series J and Series L Preference Shares were increased to US

$0.30540 from US$0.25000 on June 1, 2017, and to US$0.30993 from US$0.25000 on September 1, 2017, respectively, due to 

the reset of the annual dividend rate on every fifth anniversary of the date of issuance of the Series J and Serles L Preference 

Shares. 

160

161

(millions of Canadian dollars; number of

shares in millions)

Preference Shares, Series A

Preference Shares, Series B

Preference Shares, Series C

Preference Shares, Series D

Preference Shares, Series F

Preference Shares, Series H

Preference Shares, Series J

Preference Shares, Series L

Preference Shares, Series N

Preference Shares, Series P

Preference Shares, Series R

Preference Shares, Series 1

Preference Shares, Series 3

Preference Shares, Series 5

Preference Shares, Series 7

Preference Shares, Series 9

Preference Shares, Series 11

Preference Shares, Series 13

Preference Shares, Series 15

Preference Shares, Series 17

Preference Shares, Series 19

Issuance costs

Balance at end of year

5

18

2

18

20

14

8

16

18

16

16

16

24

8

10

11

20

14

11

30

20

125

457

43

450

500

350

199

411

450

400

400

411

600

206

250

275

500

350

275

750

500

5

20

—

18

20

14

8

16

18

16

16

16

24

8

10

11

20

14

11

30

—

125

500

—

450

500

350

199

411

450

400

400

411

600

206

250

275

500

350

275

750

—

5

20

—

18

20

14

8

16

18

16

16

16

24

8

10

11

20

14

11

—

—

125

500

—

450

500

350

199

411

450

400

400

411

600

206

250

275

500

350

275

—

—

(155)

7,747

(147)

7,255

(137)

6,515

PREFERENCE SHARES

Characteristics of the preference shares are as follows: 

December 31,

of Shares

Amount of Shares

Amount of Shares

Amount

2017

Number

2016

Number

2015

Number

(Canadian dollars unless otherwise stated)
Preference Shares, Series A
Preference Shares, Series B5

Dividend Rate

Dividend1

Per Share Base
Redemption
Value2

Redemption and
Conversion
Option Date2,3

Right to
Convert
Into3,4

—

$25

Series B

June 1, 2022

$1.37500
$0.85360

$25
$25

—
June 1, 2022

—
Series C

Preference Shares, Series C5
Preference Shares, Series D6
Preference Shares, Series F
Preference Shares, Series H
Preference Shares, Series J7
Preference Shares, Series L7
Preference Shares, Series N
Preference Shares, Series P
Preference Shares, Series R
Preference Shares, Series 1
Preference Shares, Series 3
Preference Shares, Series 5
Preference Shares, Series 7
Preference Shares, Series 9
Preference Shares, Series 11
Preference Shares, Series 13
Preference Shares, Series 15
Preference Shares, Series 17
Preference Shares, Series 19
1  The holder is entitled to receive a fixed, cumulative, quarterly preferential dividend, as declared by the Board of Directors. With 

Series E
Series G
Series I
Series K
Series M
Series O
Series Q
Series S
Series 2
Series 4
Series 6
US$25
Series 8
$25
December 1, 2019 Series 10
$25
March 1, 2020 Series 12
$25
June 1, 2020 Series 14
$25
$25 September 1, 2020 Series 16
March 1, 2022 Series 18
$25
March 1, 2023 Series 20
$25

5.50%
3.42%
3-month treasury bill
plus 2.400%
4.00%
$1.00000
4.00%
$1.00000
4.00%
$1.00000
4.89% US$1.22160
4.96% US$1.23972
4.00%
$1.00000
4.00%
$1.00000
4.00%
$1.00000
4.00% US$1.00000
4.00%
$1.00000
4.40% US$1.10000
4.40%
$1.10000
4.40%
$1.10000
4.40%
$1.10000
4.40%
$1.10000
4.40%
$1.10000
5.15%
$1.28750
4.90%
$1.22500

March 1, 2018
$25
$25
June 1, 2018
$25 September 1, 2018
US$25
June 1, 2022
US$25 September 1, 2022
December 1, 2018
March 1, 2019
June 1, 2019
June 1, 2018
$25 September 1, 2019
March 1, 2019
March 1, 2019

$25
$25
$25
US$25

the exception of Series A and Series C Preference Shares, such fixed dividend rate resets every five years beginning on the initial 
redemption and conversion option date. The Series 17 and Series 19 Preference Shares contain a feature where the fixed 
dividend rate, when reset every five years, will not be less than 5.15% and 4.90%, respectively. No other series of Preference 
Shares has this feature. 

2  Series A Preference Shares may be redeemed any time at our option. For all other series of Preference Shares, we, may at our 
option, redeem all or a portion of the outstanding Preference Shares for the Base Redemption Value per share plus all accrued 
and unpaid dividends on the Redemption Option Date and on every fifth anniversary thereafter. 

3  The holder will have the right, subject to certain conditions, to convert their shares into Cumulative Redeemable Preference 

Shares of a specified series on a one-for-one basis on the Conversion Option Date and every fifth anniversary thereafter at an 
ascribed issue price equal to the Base Redemption Value. 

4  With the exception of Series A Preference Shares, after the redemption and conversion option dates, holders may elect to receive 

quarterly floating rate cumulative dividends per share at a rate equal to: $25 x (number of days in quarter/365) x 90 day 
Government of Canada treasury bill rate + 2.4% (Series C), 2.4% (Series E), 2.5% (Series G), 2.1% (Series I), 2.7% (Series O), 
2.5% (Series Q), 2.5% (Series S), 2.4% (Series 4), 2.6% (Series 8), 2.7% (Series 10), 2.6% (Series 12), 2.7% (Series 14), 2.7% 
(Series 16), 4.1% (Series 18) or 3.2% (Series 20); or US$25 x (number of days in quarter/365) x three-month United States 
Government treasury bill rate + 3.1% (Series K), 3.2% (Series M), 3.1% (Series 2) or 2.8% (Series 6). 

5  On June 1, 2017, 1,730,188 of Series B fixed rate Preference Shares were converted to Series C floating rate Preference Shares 
based upon preference share holder elections under the terms of the Series B Preference Shares. The quarterly dividend amount 
for the Series B Preference Shares was decreased to $0.21340 from $0.25000 on June 1, 2017, due to the reset of the annual 
dividend rate on every fifth anniversary of the date of issuance of the Series B Preference Shares. The quarterly dividend amount 
for the Series C Preference Shares was set at $0.18600 on June 1, 2017, $0.19571 on September 1, 2017 and $0.20342 on 
December 1, 2017, due to reset on a quarterly basis following the issuance thereof. 

6  On January 30, 2018, we announced that we do not intend to exercise our right to redeem our Series D Preference Shares on 

March 1, 2018. As a result, until February 14, 2018, the holders of such shares had the right to convert all or part of their Series D 
fixed rate Preference Shares on a one-for-one basis into Series E floating rate Preference Shares. As of February 14, 2018, less 
than the 1,000,000 Series D Preference Shares required to give effect to conversions into Series E Preference Shares were 
tendered for conversion. As a result, none of our outstanding Series D Preference Shares will be converted into Series E  
Preference Shares on March 1, 2018. However, on March 1, 2018, the quarterly dividend amount for the Series D Preference 
Shares will be increased to $0.27875 from $0.25000, due to the reset of the annual dividend rate on every fifth anniversary of the 
date of issuance of the Series D Preference Shares. 

7  No Series J or Series L Preference Shares were converted on the June 1, 2017 and September 1, 2017 conversion option dates, 
respectively. However, the quarterly dividend amounts for the Series J and Series L Preference Shares were increased to US
$0.30540 from US$0.25000 on June 1, 2017, and to US$0.30993 from US$0.25000 on September 1, 2017, respectively, due to 
the reset of the annual dividend rate on every fifth anniversary of the date of issuance of the Series J and Serles L Preference 
Shares. 

160

161

DIVIDEND REINVESTMENT AND SHARE PURCHASE PLAN
Under the DRIP, registered shareholders may reinvest dividends in our common shares and make 
additional optional cash payments to purchase common shares, free of brokerage or other charges. 
Participants in our DRIP receive a 2% discount on the purchase of common shares with reinvested 
dividends. For the years ended December 31, 2017 and 2016, total dividends paid were $3.5 billion and 
$1.9 billion, respectively, of which $2.3 billion and $1.2 billion, respectively, were paid in cash and 
reflected in financing activities. The remaining $1.2 billion and $795 million, respectively, of dividends paid 
were reinvested pursuant to the DRIP and resulted in the issuance of common shares rather than a cash 
payment. In addition to amounts paid in cash and reflected in financing activities for the year ended 
December 31, 2017, were $414 million in dividends declared to Spectra Energy shareholders prior to the 
Merger Transaction that were paid after the Merger Transaction.

SHAREHOLDER RIGHTS PLAN
The Shareholder Rights Plan is designed to encourage the fair treatment of shareholders in connection 
with any takeover offer for us. Rights issued under the plan become exercisable when a person and any 
related parties acquires or announces its intention to acquire 20% or more of our outstanding common 
shares without complying with certain provisions set out in the plan or without approval of our Board of 
Directors. Should such an acquisition occur, each rights holder, other than the acquiring person and 
related parties, will have the right to purchase our common shares at a 50% discount to the market price 
at that time.

21.  STOCK OPTION AND STOCK UNIT PLANS 

We maintain four long-term incentive compensation plans: the ISO Plan, the Performance Stock Options 
(PSO) Plan, the Performance Stock Units (PSU) Plan and the RSU Plan. A maximum of 60 million 
common shares were reserved for issuance under the 2002 ISO Plan, of which 50 million have been 
issued to date. A further 71 million common shares have been reserved for issuance under the 2007 ISO 
and PSO Plans, of which 16 million have been issued to date. The PSU and RSU Plans grant notional 
units as if a unit was one Enbridge common share and are payable in cash.

Prior to the Merger Transaction, Spectra Energy had a long-term incentive plan providing for the granting 
of stock options, restricted and unrestricted stock awards and units, and other equity-based awards. Upon 
closing of the Merger Transaction, Enbridge replaced existing Spectra Energy share-based payment 
awards with awards that will be settled in shares of Enbridge, with Spectra Energy's cash-settled phantom 
awards included in the fair value of the net assets acquired (Note 7). 

Total stock-based compensation expense recorded for the years ended December 31, 2017, 2016 and 
2015 was $165 million, $130 million and $97 million, respectively. Disclosure of activity and assumptions 
for material stock-based compensation plans are included below. 

INCENTIVE STOCK OPTIONS

Key employees are granted ISOs to purchase common shares at the market price on the grant date. 

ISOs vest in equal annual installments over a four-year period and expire 10 years after the issue date.

Weighted

Average

Exercise

Price

Weighted

Average

Remaining

Contractual

Life (years)

Aggregate

Intrinsic

Value

December 31, 2017

(options in thousands; intrinsic value in millions of Canadian

dollars)

Options outstanding at beginning of year

Options granted

Options exercised1

Options cancelled or expired

Options outstanding at end of year

Options vested at end of year2

Number

32,909

5,995

(3,350)

(1,188)

34,366

20,403

42.51

55.72

32.65

53.23

45.41

40.89

1  The total intrinsic value of ISOs exercised during the years ended December 31, 2017, 2016 and 2015 was $62 million, $123 

million and $126 million, respectively, and cash received on exercise was $17 million, $37 million and $43 million, respectively.

2  The total fair value of ISOs vested during the years ended December 31, 2017, 2016 and 2015 was $44 million, $36 million and 

$34 million, respectively.

Weighted average assumptions used to determine the fair value of ISOs granted using the Black-

Scholes-Merton option pricing model are as follows:

6.1

4.7

271

228

Year ended December 31,

Fair value per option (Canadian dollars)1

Valuation assumptions

Expected option term (years)2

Expected volatility3

Expected dividend yield4

Risk-free interest rate5

2017

6.00

5

20.4%

4.2%

1.2%

2016

7.37

5

25.1%

4.4%

0.8%

2015

6.48

5

19.9%

3.2%

0.9%

1  Options granted to United States employees are based on NYSE prices. The option value and assumptions shown are based on 

a weighted average of the United States and the Canadian options. The fair values per option for the years ended December 31, 

2017, 2016 and 2015 were $5.66, $7.01 and $6.22, respectively, for Canadian employees and US$5.72, US$6.60 and US$6.16, 

respectively, for United States employees.

2  The expected option term is six years based on historical exercise practice and three years for retirement eligible employees.

3  Expected volatility is determined with reference to historic daily share price volatility and consideration of the implied volatility 

observable in call option values near the grant date.

4  The expected dividend yield is the current annual dividend at the grant date divided by the current stock price.

5  The risk-free interest rate is based on the Government of Canada’s Canadian Bond Yields and the United States Treasury Bond 

Yields.

Compensation expense recorded for the years ended December 31, 2017, 2016 and 2015 for ISOs was 

$40 million, $43 million and $35 million, respectively. As at December 31, 2017, unrecognized 

compensation expense related to non-vested stock-based compensation arrangements granted under the 

ISO Plan was $47 million. The expense is expected to be fully recognized over a weighted average period 

of approximately two years.

162

163

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DIVIDEND REINVESTMENT AND SHARE PURCHASE PLAN

Under the DRIP, registered shareholders may reinvest dividends in our common shares and make 

additional optional cash payments to purchase common shares, free of brokerage or other charges. 

Participants in our DRIP receive a 2% discount on the purchase of common shares with reinvested 

dividends. For the years ended December 31, 2017 and 2016, total dividends paid were $3.5 billion and 

$1.9 billion, respectively, of which $2.3 billion and $1.2 billion, respectively, were paid in cash and 

reflected in financing activities. The remaining $1.2 billion and $795 million, respectively, of dividends paid 

were reinvested pursuant to the DRIP and resulted in the issuance of common shares rather than a cash 

payment. In addition to amounts paid in cash and reflected in financing activities for the year ended 

December 31, 2017, were $414 million in dividends declared to Spectra Energy shareholders prior to the 

Merger Transaction that were paid after the Merger Transaction.

SHAREHOLDER RIGHTS PLAN

The Shareholder Rights Plan is designed to encourage the fair treatment of shareholders in connection 

with any takeover offer for us. Rights issued under the plan become exercisable when a person and any 

related parties acquires or announces its intention to acquire 20% or more of our outstanding common 

shares without complying with certain provisions set out in the plan or without approval of our Board of 

Directors. Should such an acquisition occur, each rights holder, other than the acquiring person and 

related parties, will have the right to purchase our common shares at a 50% discount to the market price 

at that time.

21.  STOCK OPTION AND STOCK UNIT PLANS 

We maintain four long-term incentive compensation plans: the ISO Plan, the Performance Stock Options 

(PSO) Plan, the Performance Stock Units (PSU) Plan and the RSU Plan. A maximum of 60 million 

common shares were reserved for issuance under the 2002 ISO Plan, of which 50 million have been 

issued to date. A further 71 million common shares have been reserved for issuance under the 2007 ISO 

and PSO Plans, of which 16 million have been issued to date. The PSU and RSU Plans grant notional 

units as if a unit was one Enbridge common share and are payable in cash.

Prior to the Merger Transaction, Spectra Energy had a long-term incentive plan providing for the granting 

of stock options, restricted and unrestricted stock awards and units, and other equity-based awards. Upon 

closing of the Merger Transaction, Enbridge replaced existing Spectra Energy share-based payment 

awards with awards that will be settled in shares of Enbridge, with Spectra Energy's cash-settled phantom 

awards included in the fair value of the net assets acquired (Note 7). 

Total stock-based compensation expense recorded for the years ended December 31, 2017, 2016 and 

2015 was $165 million, $130 million and $97 million, respectively. Disclosure of activity and assumptions 

for material stock-based compensation plans are included below. 

INCENTIVE STOCK OPTIONS
Key employees are granted ISOs to purchase common shares at the market price on the grant date. 
ISOs vest in equal annual installments over a four-year period and expire 10 years after the issue date.

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contractual
Life (years)

Aggregate
Intrinsic
Value

Number

December 31, 2017
(options in thousands; intrinsic value in millions of Canadian
dollars)
Options outstanding at beginning of year
Options granted
Options exercised1
Options cancelled or expired
Options outstanding at end of year
Options vested at end of year2
1  The total intrinsic value of ISOs exercised during the years ended December 31, 2017, 2016 and 2015 was $62 million, $123 
million and $126 million, respectively, and cash received on exercise was $17 million, $37 million and $43 million, respectively.
2  The total fair value of ISOs vested during the years ended December 31, 2017, 2016 and 2015 was $44 million, $36 million and 

32,909
5,995
(3,350)
(1,188)
34,366
20,403

42.51
55.72
32.65
53.23
45.41
40.89

6.1
4.7

271
228

$34 million, respectively.

Weighted average assumptions used to determine the fair value of ISOs granted using the Black-
Scholes-Merton option pricing model are as follows:

Year ended December 31,
Fair value per option (Canadian dollars)1
Valuation assumptions

2017
6.00

2016
7.37

2015
6.48

Expected option term (years)2
Expected volatility3
Expected dividend yield4
Risk-free interest rate5

5
19.9%
3.2%
0.9%
1  Options granted to United States employees are based on NYSE prices. The option value and assumptions shown are based on 
a weighted average of the United States and the Canadian options. The fair values per option for the years ended December 31, 
2017, 2016 and 2015 were $5.66, $7.01 and $6.22, respectively, for Canadian employees and US$5.72, US$6.60 and US$6.16, 
respectively, for United States employees.

5
20.4%
4.2%
1.2%

5
25.1%
4.4%
0.8%

2  The expected option term is six years based on historical exercise practice and three years for retirement eligible employees.
3  Expected volatility is determined with reference to historic daily share price volatility and consideration of the implied volatility 

observable in call option values near the grant date.

4  The expected dividend yield is the current annual dividend at the grant date divided by the current stock price.
5  The risk-free interest rate is based on the Government of Canada’s Canadian Bond Yields and the United States Treasury Bond 

Yields.

Compensation expense recorded for the years ended December 31, 2017, 2016 and 2015 for ISOs was 
$40 million, $43 million and $35 million, respectively. As at December 31, 2017, unrecognized 
compensation expense related to non-vested stock-based compensation arrangements granted under the 
ISO Plan was $47 million. The expense is expected to be fully recognized over a weighted average period 
of approximately two years.

162

163

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Aggregate
Intrinsic 
Value

Weighted
Average
Remaining
Contractual 
Life (years)

RESTRICTED STOCK UNITS
We have a RSU Plan where cash awards are paid to certain of our non-executive employees following a 
35-month maturity period. RSU holders receive cash equal to our weighted average share price for 20 
days prior to the maturity of the grant multiplied by the units outstanding on the maturity date.

Cash Flow

Hedges

Net

Investment

Hedges

Cumulative

Translation

Adjustment

Equity

Investees

Pension and

OPEB

Adjustment

December 31, 2017
(units in thousands; intrinsic value in millions of Canadian dollars)
Units outstanding at beginning of year
Units granted
Units cancelled
Units matured1
Dividend reinvestment
Units outstanding at end of year
83
1  The total amount paid during the years ended December 31, 2017, 2016 and 2015 for RSUs was $39 million, $56 million and $45 

1,854
741
(186)
(839)
123
1,693

1.4

Number

(millions of Canadian dollars)

Balance at January 1, 2016

Other comprehensive income/(loss) retained

in AOCI

Other comprehensive (income)/loss

reclassified to earnings

Interest rate contracts1

Commodity contracts2

Foreign exchange contracts3

Other contracts4

 Amortization of pension and OPEB 

actuarial loss and prior service costs5

Tax impact

Income tax on amounts retained in AOCI

Income tax on amounts reclassified to

earnings

(millions of Canadian dollars)

Balance at January 1, 2015

Other comprehensive income/(loss) retained

in AOCI

Other comprehensive (income)/loss

reclassified to earnings

Interest rate contracts1

Commodity contracts2

Foreign exchange contracts3

Other contracts4

 Amortization of pension and OPEB 

actuarial loss and prior service costs5

Other comprehensive income reclassified to

earnings of derecognized cash flow

hedges

Tax impact

Income tax on amounts retained in AOCI

Income tax on amounts reclassified to

Income tax on amounts reclassified to

earnings of derecognized cash flow

earnings

hedges

(688)

(216)

147

(11)

1

(18)

—

(97)

91

(52)

39

(746)

(488)

73

(34)

(11)

7

26

—

(338)

(277)

(29)

15

91

77

(688)

(795)

171

3,365

(665)

171

(665)

—

—

—

—

—

(5)

—

(5)

—

—

—

—

—

—

49

—

—

49

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

(952)

3,056

Total

1,632

(760)

147

(11)

1

(18)

21

(620)

102

(56)

46

Total

(435)

2,289

(34)

(11)

7

26

32

(338)

1,971

1

4

91

96

1,632

(287)

(45)

—

—

—

—

21

(24)

11

(4)

7

(359)

65

—

—

—

—

32

—

97

(14)

(11)

—

(25)

(287)

37

(5)

—

—

—

—

—

(5)

5

—

5

37

(5)

47

—

—

—

—

—

—

47

(5)

—

—

(5)

37

Cash Flow

Hedges

Net

Investment

Hedges

Cumulative

Translation

Adjustment

Equity

Investees

Pension and

OPEB

Adjustment

108

(952)

309

3,056

Balance at December 31, 2015

(795)

3,365

1  Reported within Interest expense in the Consolidated Statements of Earnings.

2  Reported within Commodity costs in the Consolidated Statements of Earnings.

3  Reported within Other income/(expense) in the Consolidated Statements of Earnings.

4  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

5  These components are included in the computation of net benefit costs and are reported within Operating and administrative 

expense in the Consolidated Statements of Earnings.

million, respectively.

Balance at December 31, 2016

(629)

2,700

(304)

1,058

Compensation expense recorded for the years ended December 31, 2017, 2016 and 2015 for RSUs was 
$46 million, $51 million and $47 million, respectively. As at December 31, 2017, unrecognized 
compensation expense related to non-vested units granted under the RSU Plan was $48 million. The 
expense is expected to be fully recognized over a weighted average period of approximately one year.

22.  COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE 

INCOME/(LOSS)  

Changes in AOCI attributable to our common shareholders for the years ended December 31, 2017, 2016 
and 2015 are as follows:

(millions of Canadian dollars)
Balance at January 1, 2017
Other comprehensive income/(loss) retained

in AOCI

Other comprehensive (income)/loss

reclassified to earnings
Interest rate contracts1
Commodity contracts2
Foreign exchange contracts3
Other contracts4
 Amortization of pension and OPEB 

actuarial loss and prior service costs5

Tax impact

Income tax on amounts retained in AOCI
Income tax on amounts reclassified to

earnings

Balance at December 31, 2017

Cash Flow
Hedges

Net
Investment
Hedges

Cumulative
Translation
Adjustment

Equity
Investees

Pension and
OPEB
Adjustment

Total

(746)

1

207
(7)
(6)
(6)

—

189

(16)

(71)

(87)
(644)

(629)

478

2,700

(2,623)

—
—
—
—

—

—
—
—
—

—

478

(2,623)

12

—

12
(139)

—

—

—
77

37

(11)

—
—
—
—

—

(11)

(16)

—

(16)
10

(304)

1,058

18

(2,137)

—
—
—
—

41

59

(10)

(22)

(32)
(277)

207
(7)
(6)
(6)

41

(1,908)

(30)

(93)

(123)
(973)

164

165

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
RESTRICTED STOCK UNITS

We have a RSU Plan where cash awards are paid to certain of our non-executive employees following a 

35-month maturity period. RSU holders receive cash equal to our weighted average share price for 20 

days prior to the maturity of the grant multiplied by the units outstanding on the maturity date.

Weighted

Average

Remaining

Contractual 

Life (years)

Aggregate

Intrinsic 

Value

December 31, 2017

(units in thousands; intrinsic value in millions of Canadian dollars)

Units outstanding at beginning of year

Units granted

Units cancelled

Units matured1

Dividend reinvestment

Units outstanding at end of year

million, respectively.

Number

1,854

741

(186)

(839)

123

1,693

1  The total amount paid during the years ended December 31, 2017, 2016 and 2015 for RSUs was $39 million, $56 million and $45 

1.4

83

Compensation expense recorded for the years ended December 31, 2017, 2016 and 2015 for RSUs was 

$46 million, $51 million and $47 million, respectively. As at December 31, 2017, unrecognized 

compensation expense related to non-vested units granted under the RSU Plan was $48 million. The 

expense is expected to be fully recognized over a weighted average period of approximately one year.

22.  COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE 

Changes in AOCI attributable to our common shareholders for the years ended December 31, 2017, 2016 

INCOME/(LOSS)  

and 2015 are as follows:

(millions of Canadian dollars)

Balance at January 1, 2017

Other comprehensive income/(loss) retained

in AOCI

Other comprehensive (income)/loss

reclassified to earnings

Interest rate contracts1

Commodity contracts2

Foreign exchange contracts3

Other contracts4

 Amortization of pension and OPEB 

actuarial loss and prior service costs5

Tax impact

Income tax on amounts retained in AOCI

Income tax on amounts reclassified to

earnings

Cash Flow

Hedges

Net

Investment

Hedges

Cumulative

Translation

Adjustment

Equity

Investees

Pension and

OPEB

Adjustment

Total

(629)

478

2,700

(2,623)

(304)

1,058

18

(2,137)

(746)

1

207

(7)

(6)

(6)

—

189

(16)

(71)

(87)

(644)

478

(2,623)

—

—

—

—

—

12

—

12

—

—

—

—

—

—

—

—

77

37

(11)

—

—

—

—

—

(11)

(16)

—

(16)

10

—

—

—

—

41

59

(10)

(22)

(32)

(277)

(1,908)

207

(7)

(6)

(6)

41

(30)

(93)

(123)

(973)

(millions of Canadian dollars)
Balance at January 1, 2016
Other comprehensive income/(loss) retained

in AOCI

Other comprehensive (income)/loss

reclassified to earnings
Interest rate contracts1
Commodity contracts2
Foreign exchange contracts3
Other contracts4
 Amortization of pension and OPEB 

actuarial loss and prior service costs5

Tax impact

Income tax on amounts retained in AOCI
Income tax on amounts reclassified to

earnings

Balance at December 31, 2016

(millions of Canadian dollars)
Balance at January 1, 2015
Other comprehensive income/(loss) retained

in AOCI

Other comprehensive (income)/loss

reclassified to earnings
Interest rate contracts1
Commodity contracts2
Foreign exchange contracts3
Other contracts4
 Amortization of pension and OPEB 

actuarial loss and prior service costs5

Other comprehensive income reclassified to

earnings of derecognized cash flow
hedges

Tax impact

Income tax on amounts retained in AOCI
Income tax on amounts reclassified to

earnings

Income tax on amounts reclassified to
earnings of derecognized cash flow
hedges

Cash Flow
Hedges

Net
Investment
Hedges

Cumulative
Translation
Adjustment

Equity
Investees

Pension and
OPEB
Adjustment

(688)

(216)

147
(11)
1
(18)

—

(97)

91

(52)

39
(746)

(795)

171

—
—
—
—

—

171

(5)

—

(5)
(629)

3,365

(665)

—
—
—
—

—

(665)

—

—

—
2,700

37

(5)

—
—
—
—

—

(5)

5

—

5
37

(287)

(45)

—
—
—
—

21

(24)

11

(4)

7
(304)

Cash Flow
Hedges

Net
Investment
Hedges

Cumulative
Translation
Adjustment

Equity
Investees

Pension and
OPEB
Adjustment

(488)

73

(34)
(11)
7
26

—

(338)

(277)

(29)

15

91

108

(952)

309

3,056

—
—
—
—

—

—

—
—
—
—

—

—

(952)

3,056

49

—

—

—

—

—

(5)

47

—
—
—
—

—

—

47

(5)

—

—

(359)

65

—
—
—
—

32

—

97

(14)

(11)

—

Total

1,632

(760)

147
(11)
1
(18)

21

(620)

102

(56)

46
1,058

Total

(435)

2,289

(34)
(11)
7
26

32

(338)

1,971

1

4

91

Balance at December 31, 2015
1  Reported within Interest expense in the Consolidated Statements of Earnings.
2  Reported within Commodity costs in the Consolidated Statements of Earnings.
3  Reported within Other income/(expense) in the Consolidated Statements of Earnings.
4  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.
5  These components are included in the computation of net benefit costs and are reported within Operating and administrative 

77
(688)

49
(795)

—
3,365

(5)
37

(25)
(287)

96
1,632

Balance at December 31, 2017

(139)

expense in the Consolidated Statements of Earnings.

164

165

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
23.  RISK MANAGEMENT AND FINANCIAL INSTRUMENTS 

Commodity Price Risk 

MARKET RISK
Our earnings, cash flows and OCI are subject to movements in foreign exchange rates, interest rates, 
commodity prices and our share price (collectively, market risk). Formal risk management policies, 
processes and systems have been designed to mitigate these risks.

The following summarizes the types of market risks to which we are exposed and the risk management 
instruments used to mitigate them. We use a combination of qualifying and non-qualifying derivative 
instruments to manage the risks noted below. 

Foreign Exchange Risk 
We generate certain revenues, incur expenses, and hold a number of investments and subsidiaries that 
are denominated in currencies other than Canadian dollars. As a result, our earnings, cash flows and OCI 
are exposed to fluctuations resulting from foreign exchange rate variability. 

We employ financial derivative instruments to hedge foreign currency denominated earnings exposure. A 
combination of qualifying and non-qualifying derivative instruments are used to hedge anticipated foreign 
currency denominated revenues and expenses, and to manage variability in cash flows. We hedge 
certain net investments in United States dollar denominated investments and subsidiaries using foreign 
currency derivatives and United States dollar denominated debt. 

Interest Rate Risk 
Our earnings and cash flows are exposed to short-term interest rate variability due to the regular repricing 
of our variable rate debt, primarily commercial paper. Pay fixed-receive floating interest rate swaps are 
used to hedge against the effect of future interest rate movements. We have implemented a program to 
significantly mitigate the impact of short-term interest rate volatility on interest expense via execution of 
floating to fixed interest rate swaps with an average swap rate of 2.6%. 

As a result of the Merger Transaction, we are exposed to changes in the fair value of fixed rate debt that 
arise as a result of the changes in market interest rates. Pay floating-receive fixed interest rate swaps are 
used to hedge against future changes to the fair value of fixed rate debt. We have assumed a program 
within our subsidiaries to mitigate the impact of fluctuations in the fair value of fixed rate debt via 
execution of fixed to floating interest rate swaps with an average swap rate of 2.2%. 

Our earnings and cash flows are also exposed to variability in longer term interest rates ahead of 
anticipated fixed rate term debt issuances. Forward starting interest rate swaps are used to hedge against 
the effect of future interest rate movements. We have assumed a program within some of our subsidiaries 
to mitigate our exposure to long-term interest rate variability on select forecast term debt issuances via 
execution of floating to fixed interest rate swaps with an average swap rate of 3.1%. 

We also monitor our debt portfolio mix of fixed and variable rate debt instruments to maintain a 
consolidated portfolio of debt within the Board of Directors approved policy limit of a maximum of 25% 
floating rate debt as a percentage of total debt outstanding. Effective January 1, 2018, the Board of 
Directors approved a policy limit increase of a maximum of 30% floating rate debt as a percentage of total 
debt outstanding. We primarily use qualifying derivative instruments to manage interest rate risk. 

Our earnings and cash flows are exposed to changes in commodity prices as a result of our ownership 

interests in certain assets and investments, as well as through the activities of our energy services 

subsidiaries. These commodities include natural gas, crude oil, power and NGL. We employ financial and 

physical derivative instruments to fix a portion of the variable price exposures that arise from physical 

transactions involving these commodities. We use primarily non-qualifying derivative instruments to 

manage commodity price risk. 

Emission Allowance Price Risk 

Emission allowance price risk is the risk of gain or loss due to changes in the market price of emission 

allowances that our gas distribution business is required to purchase for itself and most of its customers 

to meet GHG compliance obligations under the Ontario Cap and Trade framework. Similar to the gas 

supply procurement framework, the OEB's framework for emission allowance procurement allows 

recovery of fluctuations in emission allowance prices in customer rates, subject to OEB approval. 

Equity Price Risk 

Equity price risk is the risk of earnings fluctuations due to changes in our share price. We have exposure 

to our own common share price through the issuance of various forms of stock-based compensation, 

which affect earnings through revaluation of the outstanding units every period. We use equity derivatives 

to manage the earnings volatility derived from one form of stock-based compensation, restricted share 

units. We use a combination of qualifying and non-qualifying derivative instruments to manage equity 

price risk. 

TOTAL DERIVATIVE INSTRUMENTS

value of our derivative instruments.

The following table summarizes the Consolidated Statements of Financial Position location and carrying 

We generally have a policy of entering into individual International Swaps and Derivatives 

Association, Inc. agreements, or other similar derivative agreements, with the majority of our financial 

derivative counterparties. These agreements provide for the net settlement of derivative instruments 

outstanding with specific counterparties in the event of bankruptcy or other significant credit events, and 

reduces our credit risk exposure on financial derivative asset positions outstanding with the 

counterparties in those circumstances. The following table summarizes the maximum potential settlement 

in the event of these specific circumstances. All amounts are presented gross in the Consolidated 

Statements of Financial Position.

166

167

 
 
 
 
 
 
 
 
 
 
 
23.  RISK MANAGEMENT AND FINANCIAL INSTRUMENTS 

MARKET RISK

Our earnings, cash flows and OCI are subject to movements in foreign exchange rates, interest rates, 

commodity prices and our share price (collectively, market risk). Formal risk management policies, 

processes and systems have been designed to mitigate these risks.

The following summarizes the types of market risks to which we are exposed and the risk management 

instruments used to mitigate them. We use a combination of qualifying and non-qualifying derivative 

instruments to manage the risks noted below. 

Foreign Exchange Risk 

We generate certain revenues, incur expenses, and hold a number of investments and subsidiaries that 

are denominated in currencies other than Canadian dollars. As a result, our earnings, cash flows and OCI 

are exposed to fluctuations resulting from foreign exchange rate variability. 

We employ financial derivative instruments to hedge foreign currency denominated earnings exposure. A 

combination of qualifying and non-qualifying derivative instruments are used to hedge anticipated foreign 

currency denominated revenues and expenses, and to manage variability in cash flows. We hedge 

certain net investments in United States dollar denominated investments and subsidiaries using foreign 

currency derivatives and United States dollar denominated debt. 

Interest Rate Risk 

Our earnings and cash flows are exposed to short-term interest rate variability due to the regular repricing 

of our variable rate debt, primarily commercial paper. Pay fixed-receive floating interest rate swaps are 

used to hedge against the effect of future interest rate movements. We have implemented a program to 

significantly mitigate the impact of short-term interest rate volatility on interest expense via execution of 

floating to fixed interest rate swaps with an average swap rate of 2.6%. 

As a result of the Merger Transaction, we are exposed to changes in the fair value of fixed rate debt that 

arise as a result of the changes in market interest rates. Pay floating-receive fixed interest rate swaps are 

used to hedge against future changes to the fair value of fixed rate debt. We have assumed a program 

within our subsidiaries to mitigate the impact of fluctuations in the fair value of fixed rate debt via 

execution of fixed to floating interest rate swaps with an average swap rate of 2.2%. 

Our earnings and cash flows are also exposed to variability in longer term interest rates ahead of 

anticipated fixed rate term debt issuances. Forward starting interest rate swaps are used to hedge against 

the effect of future interest rate movements. We have assumed a program within some of our subsidiaries 

to mitigate our exposure to long-term interest rate variability on select forecast term debt issuances via 

execution of floating to fixed interest rate swaps with an average swap rate of 3.1%. 

We also monitor our debt portfolio mix of fixed and variable rate debt instruments to maintain a 

consolidated portfolio of debt within the Board of Directors approved policy limit of a maximum of 25% 

floating rate debt as a percentage of total debt outstanding. Effective January 1, 2018, the Board of 

Directors approved a policy limit increase of a maximum of 30% floating rate debt as a percentage of total 

debt outstanding. We primarily use qualifying derivative instruments to manage interest rate risk. 

Commodity Price Risk 
Our earnings and cash flows are exposed to changes in commodity prices as a result of our ownership 
interests in certain assets and investments, as well as through the activities of our energy services 
subsidiaries. These commodities include natural gas, crude oil, power and NGL. We employ financial and 
physical derivative instruments to fix a portion of the variable price exposures that arise from physical 
transactions involving these commodities. We use primarily non-qualifying derivative instruments to 
manage commodity price risk. 

Emission Allowance Price Risk 
Emission allowance price risk is the risk of gain or loss due to changes in the market price of emission 
allowances that our gas distribution business is required to purchase for itself and most of its customers 
to meet GHG compliance obligations under the Ontario Cap and Trade framework. Similar to the gas 
supply procurement framework, the OEB's framework for emission allowance procurement allows 
recovery of fluctuations in emission allowance prices in customer rates, subject to OEB approval. 

Equity Price Risk 
Equity price risk is the risk of earnings fluctuations due to changes in our share price. We have exposure 
to our own common share price through the issuance of various forms of stock-based compensation, 
which affect earnings through revaluation of the outstanding units every period. We use equity derivatives 
to manage the earnings volatility derived from one form of stock-based compensation, restricted share 
units. We use a combination of qualifying and non-qualifying derivative instruments to manage equity 
price risk. 

TOTAL DERIVATIVE INSTRUMENTS
The following table summarizes the Consolidated Statements of Financial Position location and carrying 
value of our derivative instruments.

We generally have a policy of entering into individual International Swaps and Derivatives 
Association, Inc. agreements, or other similar derivative agreements, with the majority of our financial 
derivative counterparties. These agreements provide for the net settlement of derivative instruments 
outstanding with specific counterparties in the event of bankruptcy or other significant credit events, and 
reduces our credit risk exposure on financial derivative asset positions outstanding with the 
counterparties in those circumstances. The following table summarizes the maximum potential settlement 
in the event of these specific circumstances. All amounts are presented gross in the Consolidated 
Statements of Financial Position.

166

167

 
 
 
 
 
 
 
 
 
 
 
December 31, 2017

(millions of Canadian dollars)
Accounts receivable and other
Foreign exchange contracts
Interest rate contracts
Commodity contracts

Deferred amounts and other

assets
Foreign exchange contracts
Interest rate contracts
Commodity contracts

Accounts payable and other

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Other long-term liabilities

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Total net derivative asset/(liability)

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Derivative
Instruments
Used as
Cash Flow 
Hedges

Derivative
Instruments
Used as Net
Investment 
Hedges

Derivative
Instruments
Used as
Fair Value
Hedges

Non-
Qualifying
Derivative 
Instruments

Total Gross
Derivative
Instruments 
as 
Presented

Amounts
Available 
for Offset

Total Net
Derivative 
Instruments

Derivative

Instruments

Used as

Cash Flow

Hedges

Derivative

Instruments

Used as Net

Investment

Hedges

Non-

Qualifying

Derivative

Total Gross

Derivative

Instruments

Available for

Amounts

Total Net

Derivative 

Instruments

as Presented

Offset

Instruments

1
6
2
9

1
7
17
25

(5)
(140)
—
(1)
(146)

(4)
(38)
—
(1)
(43)

(7)
(165)
19
(2)
(155)

4
—
—
4

1
—
—
1

(42)
—
—
—
(42)

(9)
—
—
—
(9)

(46)
—
—
—
(46)

—
2
—
2

—
6
—
6

—
(6)
—
—
(6)

—
(2)
—
—
(2)

—
—
—
—
—

138
—
143
281

143
—
6
149

(312)
(183)
(439)
(2)
(936)

(1,299)
—
(186)
—
(1,485)

(1,330)
(183)
(476)
(2)
(1,991)

143
8
145
296

145
13
23
181

(359)
(329)
(439)
(3)
(1,130)

(1,312)
(40)
(186)
(1)
(1,539)

(1,383)
(348)
(457)
(4)
(2,192)

(83)
(3)
(64)
(150)

(125)
(2)
(19)
(146)

83
3
64
—
150

125
2
19
—
146

—
—
—
—
—

60
5
81
146

20
11
4
35

(276)
(326)
(375)
(3)
(980)

(1,187)
(38)
(167)
(1)
(1,393)

(1,383)
(348)
(457)
(4)
(2,192)

December 31, 2016

(millions of Canadian dollars)

Accounts receivable and other

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Deferred amounts and other

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Accounts payable and other

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Other long-term liabilities

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Total net derivative asset/(liability)

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

101

113

3

9

1

8

7

1

17

—

(452)

—

(1)

(453)

(268)

—

—

(268)

102

(709)

16

—

(591)

3

—

—

3

3

—

—

—

3

—

—

—

(268)

(68)

—

—

(68)

(330)

—

—

—

(330)

5

—

232

237

69

—

61

1

131

(727)

(131)

(359)

(3)

(1,961)

(205)

(211)

(2,377)

(2,614)

(336)

(277)

(2)

(3,229)

109

3

241

353

73

8

68

2

151

(995)

(583)

(359)

(4)

(2,029)

(473)

(211)

(2,713)

(2,842)

(1,045)

(261)

(2)

(4,150)

(268)

(1,220)

(1,941)

(103)

(3)

(125)

(231)

(72)

(6)

(22)

—

(100)

103

3

125

—

231

72

6

22

100

—

—

—

—

—

6

—

116

122

1

2

46

2

51

(892)

(580)

(234)

(4)

(1,710)

(1,957)

(467)

(189)

(2,613)

(2,842)

(1,045)

(261)

(2)

(4,150)

168

169

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative

Derivative

Derivative

Instruments

Instruments

Instruments

Used as

Used as Net

Used as

Cash Flow 

Investment 

Fair Value

Non-

Qualifying

Derivative 

Total Gross

Derivative

Instruments 

Amounts

Available 

Total Net

Derivative 

as 

December 31, 2017

Hedges

Hedges

Hedges

Instruments

Presented

for Offset

Instruments

(millions of Canadian dollars)

Accounts receivable and other

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Deferred amounts and other

assets

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Accounts payable and other

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Other long-term liabilities

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Total net derivative asset/(liability)

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

1

6

2

9

1

7

17

25

(5)

(140)

—

(1)

(146)

(4)

(38)

—

(1)

(43)

(7)

(165)

19

(2)

(155)

4

—

—

4

1

—

—

1

—

—

—

(42)

(42)

(9)

—

—

—

(9)

(46)

—

—

—

(46)

—

2

—

2

—

6

—

6

—

(6)

—

—

(6)

—

(2)

—

—

(2)

—

—

—

—

—

138

—

143

281

143

—

6

149

(312)

(183)

(439)

(2)

(936)

(186)

—

—

(183)

(476)

(2)

143

8

145

296

145

13

23

181

(359)

(329)

(439)

(3)

(1,130)

(40)

(186)

(1)

(348)

(457)

(4)

(1,299)

(1,312)

(1,485)

(1,539)

(1,330)

(1,383)

(1,991)

(2,192)

(83)

(3)

(64)

(150)

(125)

(2)

(19)

(146)

83

3

64

—

150

125

2

19

—

146

—

—

—

—

—

60

5

81

146

20

11

4

35

(276)

(326)

(375)

(3)

(980)

(1,187)

(38)

(167)

(1)

(1,393)

(1,383)

(348)

(457)

(4)

(2,192)

December 31, 2016

(millions of Canadian dollars)
Accounts receivable and other
Foreign exchange contracts
Interest rate contracts
Commodity contracts

Deferred amounts and other

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Accounts payable and other

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Other long-term liabilities

Foreign exchange contracts
Interest rate contracts
Commodity contracts

Total net derivative asset/(liability)

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Derivative
Instruments
Used as
Cash Flow
Hedges

Derivative
Instruments
Used as Net
Investment
Hedges

Non-
Qualifying
Derivative
Instruments

Total Gross
Derivative
Instruments
as Presented

Amounts
Available for
Offset

Total Net
Derivative 
Instruments

101
3
9
113

1
8
7
1
17

—
(452)
—
(1)
(453)

—
(268)
—
(268)

102
(709)
16
—
(591)

3
—
—
3

3
—
—
—
3

(268)
—
—
—
(268)

(68)
—
—
(68)

(330)
—
—
—
(330)

5
—
232
237

69
—
61
1
131

(727)
(131)
(359)
(3)
(1,220)

(1,961)
(205)
(211)
(2,377)

(2,614)
(336)
(277)
(2)
(3,229)

109
3
241
353

73
8
68
2
151

(995)
(583)
(359)
(4)
(1,941)

(2,029)
(473)
(211)
(2,713)

(2,842)
(1,045)
(261)
(2)
(4,150)

(103)
(3)
(125)
(231)

(72)
(6)
(22)
—
(100)

103
3
125
—
231

72
6
22
100

—
—
—
—
—

6
—
116
122

1
2
46
2
51

(892)
(580)
(234)
(4)
(1,710)

(1,957)
(467)
(189)
(2,613)

(2,842)
(1,045)
(261)
(2)
(4,150)

168

169

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table summarizes the maturity and notional principal or quantity outstanding related to our 
derivative instruments. 

As at December 31,
Foreign exchange contracts - United States 

dollar forwards - purchase (millions of United 
States dollars)

Foreign exchange contracts - United States 

dollar forwards - sell (millions of United States 
dollars)

Foreign exchange contracts - British pound 
(GBP) forwards - purchase (millions of GBP)
Foreign exchange contracts - GBP forwards - 

sell (millions of GBP)

Foreign exchange contracts - Euro forwards - 

purchase (millions of Euro)

Foreign exchange contracts - Euro forwards - 

sell (millions of Euro)

Foreign exchange contracts - Japanese yen 

forwards - purchase (millions of yen)

Interest rate contracts - short-term pay fixed 

rate (millions of Canadian dollars)

Interest rate contracts - long-term receive fixed 

rate (millions of Canadian dollars)

Interest rate contracts - long-term pay fixed rate 

(millions of Canadian dollars)

Equity contracts (millions of Canadian dollars)
Commodity contracts - natural gas (billions of 

cubic feet)

Commodity contracts - crude oil (millions of 

barrels)

Commodity contracts - NGL (millions of barrels)
Commodity contracts - power (megawatt per hour 

(MW/H))

2018

2019

2020

2021

2022 Thereafter

2017

2016
Total

755

2

2

—

—

—

997

(millions of Canadian dollars)

Amount of unrealized gain/(loss) recognized in OCI

4,478

3,246

3,258

1,689

1,676

1,820

13,591

18

—

—

89

280

375

—

—

— 32,662

4,950

1,585

1,522

1,018

4,007

45

957

37

—

25

—

35

—

215

822

438

8

—

27

—

—

28

—

169

169

—

149

—

889

97

285

—

—

— 20,000

—

32,662

202

14,008

95

433

—

—

91

349

—

—

(1)

—

—

52

—

—

—

—

—

—

7,509

88

(161)

(20)

(14)

(4)2

(59)

(3)

(12)

42

(69)

(20)

(10)

—

—

51

—

—

55

—

—

(3)

(43)

1

(43)

1  As at December 31, 2017, thereafter includes an average net purchase/(sell) of power of (43) MW/H for 2023 through 2025. 
2  As at December 31, 2016, the average net purchase/(sell) of power was (4) MW/H for 2017 through 2025 with a high of 40 MW/H 

and a low of (43) MW/H. 

170

171

The Effect of Derivative Instruments on the Consolidated Statements of Earnings and 

Comprehensive Income

The following table presents the effect of cash flow hedges and net investment hedges on our 

consolidated earnings and consolidated comprehensive income, before the effect of income taxes:

Cash flow hedges

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Net investment hedges

Foreign exchange contracts

portion)

Foreign exchange contracts1

Interest rate contracts2,3

Commodity contracts4

Other contracts5

Restructuring Plan

Interest rate contracts2

Interest rate contracts2, 3

Commodity contracts4

Earnings.

Amount of (gain)/loss reclassified from AOCI to earnings (effective 

De-designation of qualifying hedges in connection with the Canadian

Amount of (gain)/loss reclassified from AOCI to earnings (ineffective 

portion and amount excluded from effectiveness testing)

2017

2016

2015

(5)

6

11

1

284

297

(104)

388

(9)

8

283

—

—

(4)

—

(4)

(19)

(90)

14

39

22

(34)

2

145

(12)

(29)

106

—

—

61

—

61

77

(275)

9

(47)

(248)

(484)

9

128

(46)

28

119

338

338

21

5

26

1  Reported within Transportation and other services revenues and Other income/(expense) in the Consolidated Statements of 

2  Reported within Interest expense in the Consolidated Statements of Earnings.

3  For the year ended December 31, 2017, includes settlements of $296 million loss related to the termination of long-term interest 

rate swaps as not highly probable to issue long-term debt.

4  Reported within Transportation and other services revenues, Commodity sales revenues, Commodity costs and Operating and 

administrative expense in the Consolidated Statements of Earnings.

5  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

We estimate that a loss of $38 million from AOCI related to cash flow hedges will be reclassified to 

earnings in the next 12 months. Actual amounts reclassified to earnings depend on the foreign exchange 

rates, interest rates and commodity prices in effect when derivative contracts that are currently 

outstanding mature. For all forecasted transactions, the maximum term over which we are hedging 

exposures to the variability of cash flows is 36 months as at December 31, 2017.

Fair Value Derivatives

For interest rate derivative instruments that are designated and qualify as fair value hedges, the gain or 

loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged 

risk is included in Interest expense in the Consolidated Statements of Earnings. During the years ended 

December 31, 2017 and 2016, we recognized an unrealized loss of $10 million and nil, respectively, on 

the derivative and an unrealized gain of $11 million and nil, respectively, on the hedged item in earnings. 

During the years ended December 31, 2017 and 2016, we recognized a realized gain of $2 million and 

nil, respectively, on the derivative and a realized loss of $2 million and nil, respectively, on the hedged 

item in earnings. The difference in the amounts, if any, represents hedge ineffectiveness.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Foreign exchange contracts - United States 

dollar forwards - purchase (millions of United 

States dollars)

Foreign exchange contracts - United States 

dollar forwards - sell (millions of United States 

dollars)

Foreign exchange contracts - British pound 

(GBP) forwards - purchase (millions of GBP)

Foreign exchange contracts - GBP forwards - 

sell (millions of GBP)

Foreign exchange contracts - Euro forwards - 

purchase (millions of Euro)

Foreign exchange contracts - Euro forwards - 

sell (millions of Euro)

Foreign exchange contracts - Japanese yen 

forwards - purchase (millions of yen)

Interest rate contracts - short-term pay fixed 

rate (millions of Canadian dollars)

Interest rate contracts - long-term receive fixed 

rate (millions of Canadian dollars)

Interest rate contracts - long-term pay fixed rate 

(millions of Canadian dollars)

Equity contracts (millions of Canadian dollars)

Commodity contracts - natural gas (billions of 

cubic feet)

barrels)

(MW/H))

Commodity contracts - crude oil (millions of 

Commodity contracts - NGL (millions of barrels)

Commodity contracts - power (megawatt per hour 

755

2

2

—

—

—

997

4,478

3,246

3,258

1,689

1,676

1,820

13,591

—

—

169

169

— 32,662

— 20,000

—

32,662

202

14,008

18

—

—

89

280

375

4,950

1,585

1,522

1,018

4,007

45

957

37

(59)

(3)

(12)

42

—

—

51

—

25

—

35

—

215

822

438

8

—

—

55

—

28

—

91

349

—

—

(1)

—

—

—

27

—

95

433

—

—

—

—

(3)

(69)

(20)

(10)

—

149

—

889

52

—

—

—

—

—

2016

Total

97

285

—

—

—

7,509

88

(161)

(20)

(14)

(4)2

1  As at December 31, 2017, thereafter includes an average net purchase/(sell) of power of (43) MW/H for 2023 through 2025. 

2  As at December 31, 2016, the average net purchase/(sell) of power was (4) MW/H for 2017 through 2025 with a high of 40 MW/H 

and a low of (43) MW/H. 

(43)

1

(43)

The following table summarizes the maturity and notional principal or quantity outstanding related to our 

derivative instruments. 

As at December 31,

2018

2019

2020

2021

2022 Thereafter

2017

The Effect of Derivative Instruments on the Consolidated Statements of Earnings and 
Comprehensive Income
The following table presents the effect of cash flow hedges and net investment hedges on our 
consolidated earnings and consolidated comprehensive income, before the effect of income taxes:

(millions of Canadian dollars)
Amount of unrealized gain/(loss) recognized in OCI

Cash flow hedges

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts
Net investment hedges

Foreign exchange contracts

Amount of (gain)/loss reclassified from AOCI to earnings (effective 

portion)

Foreign exchange contracts1
Interest rate contracts2,3
Commodity contracts4
Other contracts5

De-designation of qualifying hedges in connection with the Canadian

Restructuring Plan

Interest rate contracts2

Amount of (gain)/loss reclassified from AOCI to earnings (ineffective 

portion and amount excluded from effectiveness testing)

Interest rate contracts2, 3
Commodity contracts4

2017

2016

2015

(5)
6
11
1

284
297

(104)
388
(9)
8
283

—
—

(4)
—
(4)

(19)
(90)
14
39

22
(34)

2
145
(12)
(29)
106

—
—

61
—
61

77
(275)
9
(47)

(248)
(484)

9
128
(46)
28
119

338
338

21
5
26

1  Reported within Transportation and other services revenues and Other income/(expense) in the Consolidated Statements of 

Earnings.

2  Reported within Interest expense in the Consolidated Statements of Earnings.
3  For the year ended December 31, 2017, includes settlements of $296 million loss related to the termination of long-term interest 

rate swaps as not highly probable to issue long-term debt.

4  Reported within Transportation and other services revenues, Commodity sales revenues, Commodity costs and Operating and 

administrative expense in the Consolidated Statements of Earnings.

5  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

We estimate that a loss of $38 million from AOCI related to cash flow hedges will be reclassified to 
earnings in the next 12 months. Actual amounts reclassified to earnings depend on the foreign exchange 
rates, interest rates and commodity prices in effect when derivative contracts that are currently 
outstanding mature. For all forecasted transactions, the maximum term over which we are hedging 
exposures to the variability of cash flows is 36 months as at December 31, 2017.

Fair Value Derivatives
For interest rate derivative instruments that are designated and qualify as fair value hedges, the gain or 
loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged 
risk is included in Interest expense in the Consolidated Statements of Earnings. During the years ended 
December 31, 2017 and 2016, we recognized an unrealized loss of $10 million and nil, respectively, on 
the derivative and an unrealized gain of $11 million and nil, respectively, on the hedged item in earnings. 
During the years ended December 31, 2017 and 2016, we recognized a realized gain of $2 million and 
nil, respectively, on the derivative and a realized loss of $2 million and nil, respectively, on the hedged 
item in earnings. The difference in the amounts, if any, represents hedge ineffectiveness.

170

171

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Non-Qualifying Derivatives
The following table presents the unrealized gains and losses associated with changes in the fair value of 
Non-Qualifying Derivatives
our non-qualifying derivatives:
The following table presents the unrealized gains and losses associated with changes in the fair value of 
our non-qualifying derivatives:
Year ended December 31,
(millions of Canadian dollars)
Year ended December 31,
Foreign exchange contracts1
(millions of Canadian dollars)
Interest rate contracts2
Foreign exchange contracts1
Interest rate contracts2
Commodity contracts3
Other contracts4
Commodity contracts3
Other contracts4
Total unrealized derivative fair value gain/(loss), net
Total unrealized derivative fair value gain/(loss), net
1  For the respective annual periods, reported within Transportation and other services revenues (2017 - $800 million gain; 2016 - 
$497 million gain; 2015 - $1,383 million loss) and Other income/(expense) (2017 - $484 million gain; 2016 - $438 million gain; 
1  For the respective annual periods, reported within Transportation and other services revenues (2017 - $800 million gain; 2016 - 
2015 - $804 million loss) in the Consolidated Statements of Earnings.
$497 million gain; 2015 - $1,383 million loss) and Other income/(expense) (2017 - $484 million gain; 2016 - $438 million gain; 
2015 - $804 million loss) in the Consolidated Statements of Earnings.

2  Reported as an (increase)/decrease within Interest expense in the Consolidated Statements of Earnings.
3  For the respective annual periods, reported within Transportation and other services revenues (2017 - $104 million loss; 2016 - 
2  Reported as an (increase)/decrease within Interest expense in the Consolidated Statements of Earnings.
3  For the respective annual periods, reported within Transportation and other services revenues (2017 - $104 million loss; 2016 - 

$52 million loss; 2015 - $328 million gain), Commodity sales (2017 - $90 million gain 2016 - $474 million loss; 2015 - $226 million 
loss), Commodity costs (2017 - $223 million loss; 2016 - $38 million gain; 2015 - $99 million gain) and Operating and 
$52 million loss; 2015 - $328 million gain), Commodity sales (2017 - $90 million gain 2016 - $474 million loss; 2015 - $226 million 
administrative expense (2017 - $38 million gain; 2016 - $20 million loss; 2015 - $2 million loss) in the Consolidated Statements of 
loss), Commodity costs (2017 - $223 million loss; 2016 - $38 million gain; 2015 - $99 million gain) and Operating and 
Earnings.
administrative expense (2017 - $38 million gain; 2016 - $20 million loss; 2015 - $2 million loss) in the Consolidated Statements of 
Earnings.

4  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

2015
2015
(2,187)
(363)
(2,187)
(363)
199
(22)
199
(2,373)
(22)
(2,373)

2017
2017
1,284
157
1,284
157
(199)
—
(199)
1,242
—
1,242

2016
2016
935
73
935
73
(508)
9
(508)
509
9
509

4  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.
LIQUIDITY RISK 
Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments 
LIQUIDITY RISK 
and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 
Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments 
12 month rolling time period to determine whether sufficient funds will be available and maintain 
and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 
12 month rolling time period to determine whether sufficient funds will be available and maintain 
substantial capacity under our committed bank lines of credit to address any contingencies. Our primary 
substantial capacity under our committed bank lines of credit to address any contingencies. Our primary 
sources of liquidity and capital resources are funds generated from operations, the issuance of 
commercial paper and draws under committed credit facilities and long-term debt, which includes 
sources of liquidity and capital resources are funds generated from operations, the issuance of 
debentures and medium-term notes. We also maintain current shelf prospectuses with securities 
commercial paper and draws under committed credit facilities and long-term debt, which includes 
regulators which enables, subject to market conditions, ready access to either the Canadian or United 
debentures and medium-term notes. We also maintain current shelf prospectuses with securities 
regulators which enables, subject to market conditions, ready access to either the Canadian or United 
States public capital markets. In addition, we maintain sufficient liquidity through committed credit facilities 
with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated 
States public capital markets. In addition, we maintain sufficient liquidity through committed credit facilities 
requirements for approximately one year without accessing the capital markets. We are in compliance 
with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated 
with all the terms and conditions of our committed credit facility agreements and term debt indentures as 
requirements for approximately one year without accessing the capital markets. We are in compliance 
with all the terms and conditions of our committed credit facility agreements and term debt indentures as 
at December 31, 2017. As a result, all credit facilities are available to us and the banks are obligated to 
fund and have been funding us under the terms of the facilities. 
at December 31, 2017. As a result, all credit facilities are available to us and the banks are obligated to 
fund and have been funding us under the terms of the facilities. 
CREDIT RISK 
Entering into derivative instruments may result in exposure to credit risk from the possibility that a 
CREDIT RISK 
counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk 
Entering into derivative instruments may result in exposure to credit risk from the possibility that a 
management transactions primarily with institutions that possess investment grade credit ratings. Credit 
counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk 
risk relating to derivative counterparties is mitigated by credit exposure limits and contractual 
management transactions primarily with institutions that possess investment grade credit ratings. Credit 
risk relating to derivative counterparties is mitigated by credit exposure limits and contractual 
requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using 
requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using 
external credit rating services and other analytical tools. 
external credit rating services and other analytical tools. 

172
172

We have group credit concentrations and maximum credit exposure, with respect to derivative 

instruments, in the following counterparty segments:

December 31,

(millions of Canadian dollars)

Canadian financial institutions

United States financial institutions

European financial institutions

Asian financial institutions

Other1

2017

2016

82

19

145

2

137

385

39

179

106

1

162

487

1  Other is comprised of commodity clearing house and physical natural gas and crude oil counterparties.

As at December 31, 2017, we provided letters of credit totaling nil in lieu of providing cash collateral to our 

counterparties pursuant to the terms of the relevant ISDA agreements. We held no cash collateral on 

derivative asset exposures as at December 31, 2017 and December 31, 2016.

Gross derivative balances have been presented without the effects of collateral posted. Derivative assets 

are adjusted for non-performance risk of our counterparties using their credit default swap spread rates, 

and are reflected at fair value. For derivative liabilities, our non-performance risk is considered in the 

valuation.

Credit risk also arises from trade and other long-term receivables, and is mitigated through credit 

exposure limits and contractual requirements, assessment of credit ratings and netting arrangements. 

Within EGD and Union Gas, credit risk is mitigated by the utilities' large and diversified customer base 

and the ability to recover an estimate for doubtful accounts through the ratemaking process. We actively 

monitor the financial strength of large industrial customers and, in select cases, have obtained additional 

security to minimize the risk of default on receivables. Generally, we classify and provide for receivables 

older than 20 days as past due. The maximum exposure to credit risk related to non-derivative financial 

assets is their carrying value. 

FAIR VALUE MEASUREMENTS

Our financial assets and liabilities measured at fair value on a recurring basis include derivative 

instruments. We also disclose the fair value of other financial instruments not measured at fair value. The 

fair value of financial instruments reflects our best estimates of market value based on generally accepted 

valuation techniques or models and is supported by observable market prices and rates. When such 

values are not available, we use discounted cash flow analysis from applicable yield curves based on 

observable market inputs to estimate fair value.

FAIR VALUE OF FINANCIAL INSTRUMENTS

We categorize our derivative instruments measured at fair value into one of three different levels 

depending on the observability of the inputs employed in the measurement.

Level 1

Level 2

Level 1 includes derivatives measured at fair value based on unadjusted quoted prices for identical 

assets and liabilities in active markets that are accessible at the measurement date. An active market for 

a derivative is considered to be a market where transactions occur with sufficient frequency and volume 

to provide pricing information on an ongoing basis. Our Level 1 instruments consist primarily of exchange-

traded derivatives used to mitigate the risk of crude oil price fluctuations.

Level 2 includes derivative valuations determined using directly or indirectly observable inputs other than 

quoted prices included within Level 1. Derivatives in this category are valued using models or other 

industry standard valuation techniques derived from observable market data. Such valuation techniques 

173

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table presents the unrealized gains and losses associated with changes in the fair value of 

Non-Qualifying Derivatives

our non-qualifying derivatives:

The following table presents the unrealized gains and losses associated with changes in the fair value of 

Non-Qualifying Derivatives

our non-qualifying derivatives:

Year ended December 31,

(millions of Canadian dollars)

Year ended December 31,

Foreign exchange contracts1

(millions of Canadian dollars)

Interest rate contracts2

Foreign exchange contracts1

Commodity contracts3

Interest rate contracts2

Other contracts4

Commodity contracts3

We have group credit concentrations and maximum credit exposure, with respect to derivative 
instruments, in the following counterparty segments:

2017

2017

1,284

1,284

157

(199)

157

(199)

—

1,242

—

2016

2016

935

935

73

(508)

73

(508)

9

509

9

2015

2015

(2,187)

(2,187)

(363)

(363)

199

199

(22)

(2,373)

(22)

December 31,
(millions of Canadian dollars)
Canadian financial institutions
United States financial institutions
European financial institutions
Asian financial institutions
Other1

2017

2016

82
19
145
2
137
385

39
179
106
1
162
487

1  Other is comprised of commodity clearing house and physical natural gas and crude oil counterparties.

As at December 31, 2017, we provided letters of credit totaling nil in lieu of providing cash collateral to our 
counterparties pursuant to the terms of the relevant ISDA agreements. We held no cash collateral on 
derivative asset exposures as at December 31, 2017 and December 31, 2016.

Gross derivative balances have been presented without the effects of collateral posted. Derivative assets 
are adjusted for non-performance risk of our counterparties using their credit default swap spread rates, 
and are reflected at fair value. For derivative liabilities, our non-performance risk is considered in the 
valuation.

Credit risk also arises from trade and other long-term receivables, and is mitigated through credit 
exposure limits and contractual requirements, assessment of credit ratings and netting arrangements. 
Within EGD and Union Gas, credit risk is mitigated by the utilities' large and diversified customer base 
and the ability to recover an estimate for doubtful accounts through the ratemaking process. We actively 
monitor the financial strength of large industrial customers and, in select cases, have obtained additional 
security to minimize the risk of default on receivables. Generally, we classify and provide for receivables 
older than 20 days as past due. The maximum exposure to credit risk related to non-derivative financial 
assets is their carrying value. 

FAIR VALUE MEASUREMENTS
Our financial assets and liabilities measured at fair value on a recurring basis include derivative 
instruments. We also disclose the fair value of other financial instruments not measured at fair value. The 
fair value of financial instruments reflects our best estimates of market value based on generally accepted 
valuation techniques or models and is supported by observable market prices and rates. When such 
values are not available, we use discounted cash flow analysis from applicable yield curves based on 
observable market inputs to estimate fair value.

FAIR VALUE OF FINANCIAL INSTRUMENTS
We categorize our derivative instruments measured at fair value into one of three different levels 
depending on the observability of the inputs employed in the measurement.

Level 1
Level 1 includes derivatives measured at fair value based on unadjusted quoted prices for identical 
assets and liabilities in active markets that are accessible at the measurement date. An active market for 
a derivative is considered to be a market where transactions occur with sufficient frequency and volume 
to provide pricing information on an ongoing basis. Our Level 1 instruments consist primarily of exchange-
traded derivatives used to mitigate the risk of crude oil price fluctuations.

Level 2
Level 2 includes derivative valuations determined using directly or indirectly observable inputs other than 
quoted prices included within Level 1. Derivatives in this category are valued using models or other 
industry standard valuation techniques derived from observable market data. Such valuation techniques 

173

Other contracts4

Total unrealized derivative fair value gain/(loss), net

1  For the respective annual periods, reported within Transportation and other services revenues (2017 - $800 million gain; 2016 - 

Total unrealized derivative fair value gain/(loss), net

(2,373)

509

1,242

$497 million gain; 2015 - $1,383 million loss) and Other income/(expense) (2017 - $484 million gain; 2016 - $438 million gain; 

1  For the respective annual periods, reported within Transportation and other services revenues (2017 - $800 million gain; 2016 - 

2015 - $804 million loss) in the Consolidated Statements of Earnings.

$497 million gain; 2015 - $1,383 million loss) and Other income/(expense) (2017 - $484 million gain; 2016 - $438 million gain; 

2  Reported as an (increase)/decrease within Interest expense in the Consolidated Statements of Earnings.

2015 - $804 million loss) in the Consolidated Statements of Earnings.

3  For the respective annual periods, reported within Transportation and other services revenues (2017 - $104 million loss; 2016 - 

2  Reported as an (increase)/decrease within Interest expense in the Consolidated Statements of Earnings.

$52 million loss; 2015 - $328 million gain), Commodity sales (2017 - $90 million gain 2016 - $474 million loss; 2015 - $226 million 

3  For the respective annual periods, reported within Transportation and other services revenues (2017 - $104 million loss; 2016 - 

loss), Commodity costs (2017 - $223 million loss; 2016 - $38 million gain; 2015 - $99 million gain) and Operating and 

$52 million loss; 2015 - $328 million gain), Commodity sales (2017 - $90 million gain 2016 - $474 million loss; 2015 - $226 million 

administrative expense (2017 - $38 million gain; 2016 - $20 million loss; 2015 - $2 million loss) in the Consolidated Statements of 

loss), Commodity costs (2017 - $223 million loss; 2016 - $38 million gain; 2015 - $99 million gain) and Operating and 

administrative expense (2017 - $38 million gain; 2016 - $20 million loss; 2015 - $2 million loss) in the Consolidated Statements of 

4  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

Earnings.

Earnings.

4  Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

LIQUIDITY RISK 

Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments 

LIQUIDITY RISK 

and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 

Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments 

12 month rolling time period to determine whether sufficient funds will be available and maintain 

and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 

substantial capacity under our committed bank lines of credit to address any contingencies. Our primary 

12 month rolling time period to determine whether sufficient funds will be available and maintain 

sources of liquidity and capital resources are funds generated from operations, the issuance of 

substantial capacity under our committed bank lines of credit to address any contingencies. Our primary 

commercial paper and draws under committed credit facilities and long-term debt, which includes 

sources of liquidity and capital resources are funds generated from operations, the issuance of 

debentures and medium-term notes. We also maintain current shelf prospectuses with securities 

commercial paper and draws under committed credit facilities and long-term debt, which includes 

regulators which enables, subject to market conditions, ready access to either the Canadian or United 

debentures and medium-term notes. We also maintain current shelf prospectuses with securities 

States public capital markets. In addition, we maintain sufficient liquidity through committed credit facilities 

regulators which enables, subject to market conditions, ready access to either the Canadian or United 

with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated 

States public capital markets. In addition, we maintain sufficient liquidity through committed credit facilities 

requirements for approximately one year without accessing the capital markets. We are in compliance 

with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated 

with all the terms and conditions of our committed credit facility agreements and term debt indentures as 

requirements for approximately one year without accessing the capital markets. We are in compliance 

at December 31, 2017. As a result, all credit facilities are available to us and the banks are obligated to 

with all the terms and conditions of our committed credit facility agreements and term debt indentures as 

fund and have been funding us under the terms of the facilities. 

at December 31, 2017. As a result, all credit facilities are available to us and the banks are obligated to 

fund and have been funding us under the terms of the facilities. 

CREDIT RISK 

Entering into derivative instruments may result in exposure to credit risk from the possibility that a 

CREDIT RISK 

counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk 

Entering into derivative instruments may result in exposure to credit risk from the possibility that a 

management transactions primarily with institutions that possess investment grade credit ratings. Credit 

counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk 

risk relating to derivative counterparties is mitigated by credit exposure limits and contractual 

management transactions primarily with institutions that possess investment grade credit ratings. Credit 

requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using 

risk relating to derivative counterparties is mitigated by credit exposure limits and contractual 

external credit rating services and other analytical tools. 

requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using 

external credit rating services and other analytical tools. 

172

172

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We have categorized our derivative assets and liabilities measured at fair value as follows:

include inputs such as quoted forward prices, time value, volatility factors and broker quotes that can be 
observed or corroborated in the market for the entire duration of the derivative. Derivatives valued using 
Level 2 inputs include non-exchange traded derivatives such as over-the-counter foreign exchange 
forward and cross currency swap contracts, interest rate swaps, physical forward commodity contracts, as 
well as commodity swaps and options for which observable inputs can be obtained.

We have also categorized the fair value of our held to maturity preferred share investment and long-term 
debt as Level 2. The fair value of our held to maturity preferred share investment is primarily based on the 
yield of certain Government of Canada bonds. The fair value of our long-term debt is based on quoted 
market prices for instruments of similar yield, credit risk and tenor.

Level 3
Level 3 includes derivative valuations based on inputs which are less observable, unavailable or where 
the observable data does not support a significant portion of the derivatives’ fair value. Generally, Level 3 
derivatives are longer dated transactions, occur in less active markets, occur at locations where pricing 
information is not available or have no binding broker quote to support Level 2 classification. We have 
developed methodologies, benchmarked against industry standards, to determine fair value for these 
derivatives based on extrapolation of observable future prices and rates. Derivatives valued using Level 3 
inputs primarily include long-dated derivative power contracts and NGL and natural gas contracts, basis 
swaps, commodity swaps, power and energy swaps, as well as options. We do not have any other 
financial instruments categorized in Level 3.

We use the most observable inputs available to estimate the fair value of our derivatives. When possible, 
we estimate the fair value of our derivatives based on quoted market prices. If quoted market prices are 
not available, we use estimates from third party brokers. For non-exchange traded derivatives classified 
in Levels 2 and 3, we use standard valuation techniques to calculate the estimated fair value. These 
methods include discounted cash flows for forwards and swaps and Black-Scholes-Merton pricing models 
for options. Depending on the type of derivative and nature of the underlying risk, we use observable 
market prices (interest, foreign exchange, commodity and share price) and volatility as primary inputs to 
these valuation techniques. Finally, we consider our own credit default swap spread as well as the credit 
default swap spreads associated with our counterparties in our estimation of fair value.

December 31, 2017

(millions of Canadian dollars)

Financial assets

Current derivative assets

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Long-term derivative assets

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Financial liabilities

Current derivative liabilities

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Long-term derivative liabilities

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Total net financial asset/(liability)

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Level 1

Level 2

Level 3

Total Gross

Derivative

Instruments

—

—

1

1

—

—

—

—

—

—

(13)

—

(13)

—

—

—

—

—

—

—

(12)

—

(12)

143

8

30

181

145

13

2

160

(359)

(329)

(87)

(3)

(778)

(1,312)

(40)

(3)

(1)

(1,356)

(1,383)

(348)

(58)

(4)

(1,793)

—

—

114

114

—

—

21

21

(339)

(339)

(183)

(183)

—

—

—

—

—

—

—

—

—

(387)

(387)

143

8

145

296

145

13

23

181

(359)

(329)

(439)

(3)

(1,130)

(1,312)

(40)

(186)

(1)

(1,539)

(1,383)

(348)

(457)

(4)

(2,192)

174

175

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
include inputs such as quoted forward prices, time value, volatility factors and broker quotes that can be 

observed or corroborated in the market for the entire duration of the derivative. Derivatives valued using 

Level 2 inputs include non-exchange traded derivatives such as over-the-counter foreign exchange 

forward and cross currency swap contracts, interest rate swaps, physical forward commodity contracts, as 

well as commodity swaps and options for which observable inputs can be obtained.

We have also categorized the fair value of our held to maturity preferred share investment and long-term 

debt as Level 2. The fair value of our held to maturity preferred share investment is primarily based on the 

yield of certain Government of Canada bonds. The fair value of our long-term debt is based on quoted 

market prices for instruments of similar yield, credit risk and tenor.

Level 3

Level 3 includes derivative valuations based on inputs which are less observable, unavailable or where 

the observable data does not support a significant portion of the derivatives’ fair value. Generally, Level 3 

derivatives are longer dated transactions, occur in less active markets, occur at locations where pricing 

information is not available or have no binding broker quote to support Level 2 classification. We have 

developed methodologies, benchmarked against industry standards, to determine fair value for these 

derivatives based on extrapolation of observable future prices and rates. Derivatives valued using Level 3 

inputs primarily include long-dated derivative power contracts and NGL and natural gas contracts, basis 

swaps, commodity swaps, power and energy swaps, as well as options. We do not have any other 

financial instruments categorized in Level 3.

We use the most observable inputs available to estimate the fair value of our derivatives. When possible, 

we estimate the fair value of our derivatives based on quoted market prices. If quoted market prices are 

not available, we use estimates from third party brokers. For non-exchange traded derivatives classified 

in Levels 2 and 3, we use standard valuation techniques to calculate the estimated fair value. These 

methods include discounted cash flows for forwards and swaps and Black-Scholes-Merton pricing models 

for options. Depending on the type of derivative and nature of the underlying risk, we use observable 

market prices (interest, foreign exchange, commodity and share price) and volatility as primary inputs to 

these valuation techniques. Finally, we consider our own credit default swap spread as well as the credit 

default swap spreads associated with our counterparties in our estimation of fair value.

We have categorized our derivative assets and liabilities measured at fair value as follows:

December 31, 2017

(millions of Canadian dollars)
Financial assets

Current derivative assets

Foreign exchange contracts
Interest rate contracts
Commodity contracts

Long-term derivative assets

Foreign exchange contracts
Interest rate contracts
Commodity contracts

Financial liabilities

Current derivative liabilities

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Long-term derivative liabilities

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Total net financial asset/(liability)
Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Level 1

Level 2

Level 3

Total Gross
Derivative
Instruments

—
—
1
1

—
—
—
—

—
—
(13)
—
(13)

—
—
—
—
—

—
—
(12)
—
(12)

143
8
30
181

145
13
2
160

(359)
(329)
(87)
(3)
(778)

(1,312)
(40)
(3)
(1)
(1,356)

(1,383)
(348)
(58)
(4)
(1,793)

—
—
114
114

—
—
21
21

—
—
(339)
—
(339)

—
—
(183)
—
(183)

—
—
(387)
—
(387)

143
8
145
296

145
13
23
181

(359)
(329)
(439)
(3)
(1,130)

(1,312)
(40)
(186)
(1)
(1,539)

(1,383)
(348)
(457)
(4)
(2,192)

174

175

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2016

(millions of Canadian dollars)
Financial assets

Current derivative assets

Foreign exchange contracts
Interest rate contracts
Commodity contracts

Long-term derivative assets

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Financial liabilities

Current derivative liabilities

Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Long-term derivative liabilities

Foreign exchange contracts
Interest rate contracts
Commodity contracts

Total net financial asset/(liability)
Foreign exchange contracts
Interest rate contracts
Commodity contracts
Other contracts

Level 1

Level 2

Level 3

Total Gross
Derivative
Instruments

—
—
2
2

—
—
—
—
—

—
—
(12)
—
(12)

—
—
—
—

—
—
(10)
—
(10)

109
3
86
198

73
8
43
2
126

(995)
(583)
(75)
(4)
(1,657)

(2,029)
(473)
(10)
(2,512)

(2,842)
(1,045)
44
(2)
(3,845)

—
—
153
153

—
—
25
—
25

—
—
(272)
—
(272)

—
—
(201)
(201)

—
—
(295)
—
(295)

109
3
241
353

73
8
68
2
151

(995)
(583)
(359)
(4)
(1,941)

(2,029)
(473)
(211)
(2,713)

(2,842)
(1,045)
(261)
(2)
(4,150)

The significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments 
were as follows:

December 31, 2017

Fair Value

Unobservable Input

Minimum
Price/Volatility

Maximum
Price/Volatility

Weighted
Average
Price/Volatility

Unit of
Measurement

(fair value in millions of
Canadian dollars)
Commodity contracts - 

financial1
Natural gas
Crude
NGL
Power

Commodity contracts - 

physical1
Natural gas
Crude
NGL

Commodity options2

Crude
Power

Forward gas price
Forward crude price
Forward NGL price
Forward power price

Forward gas price
Forward crude price
Forward NGL price

2.67
43.76
0.30
15.39

2.51
34.38
0.28

5.52
65.60
1.83
71.41

7.57
80.56
1.94

3.38
51.03
1.32
50.72

2.93
69.01
0.93

$/mmbtu3
$/barrel
$/gallon
$/MW/H 

$/mmbtu3
$/barrel 
$/gallon 

Option volatility
Option volatility

15%
29%

24%
55%

22%
35%

(1)
(4)
(12)
(110)

(114)
(148)
3

(1)
—
(387)

1  Financial and physical forward commodity contracts are valued using a market approach valuation technique.
2  Commodity options contracts are valued using an option model valuation technique.
3  One million British thermal units (mmbtu).

If adjusted, the significant unobservable inputs disclosed in the table above would have a direct impact on 

the fair value of our Level 3 derivative instruments. The significant unobservable inputs used in the fair 

value measurement of Level 3 derivative instruments include forward commodity prices and, for option 

contracts, price volatility. Changes in forward commodity prices could result in significantly different fair 

values for our Level 3 derivatives. Changes in price volatility would change the value of the option 

contracts. Generally, a change in the estimate of forward commodity prices is unrelated to a change in the 

Changes in net fair value of derivative assets and liabilities classified as Level 3 in the fair value hierarchy 

estimate of price volatility.

were as follows:

Year ended December 31,

(millions of Canadian dollars)

Total gain/(loss)

Included in earnings1

Included in OCI

Settlements

Level 3 net derivative asset/(liability) at beginning of period

2017

2016

(295)

(184)

4

88

(387)

54

(113)

3

(239)

(295)

Level 3 net derivative liability at end of period

Consolidated Statements of Earnings.

1  Reported within Transportation and other services revenues, Commodity costs and Operating and administrative expense in the 

Our policy is to recognize transfers as at the last day of the reporting period. There were no transfers 

between levels as at December 31, 2017 or 2016.

FAIR VALUE OF OTHER FINANCIAL INSTRUMENTS

Our other long-term investments in other entities with no actively quoted prices are recorded at cost. The 

carrying value of other long-term investments recognized at cost totaled $99 million and $110 million as at 

December 31, 2017 and 2016, respectively.

We have Restricted long-term investments held in trust totaling $267 million and $90 million as at 

December 31, 2017 and 2016, respectively, which are recognized at fair value.

We have a held to maturity preferred share investment carried at its amortized cost of $371 million and 

$355 million as at December 31, 2017 and 2016, respectively. These preferred shares are entitled to a 

cumulative preferred dividend based on the yield of 10-year Government of Canada bonds plus a margin 

of 4.38%. The fair value of this preferred share investment approximates its face value of $580 million as 

at December 31, 2017 and 2016.

As at December 31, 2017 and 2016, our long-term debt had a carrying value of $64.0 billion and $40.8 

billion, respectively, before debt issuance costs and a fair value of $67.4 billion and $43.9 billion, 

respectively. We also have noncurrent notes receivable carried at book value recorded in Deferred 

amounts and other assets in the Consolidated Statements of Financial Position. As at December 31, 2017 

and 2016, the noncurrent notes receivable had a carrying value of $89 million and nil, and a fair value of 

$89 million and nil, respectively.

NET INVESTMENT HEDGES

We have designated a portion of our United States dollar denominated debt, as well as a portfolio of 

foreign exchange forward contracts, as a hedge of our net investment in United States dollar 

denominated investments and subsidiaries.

During the years ended December 31, 2017 and 2016, we recognized an unrealized foreign exchange 

gain on the translation of United States dollar denominated debt of $367 million and $121 million, 

respectively, and an unrealized gain on the change in fair value of our outstanding foreign exchange 

176

177

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Level 1

Level 2

Level 3

Total Gross

Derivative

Instruments

—

—

2

2

—

—

—

—

—

—

—

(12)

—

(12)

—

—

—

—

—

—

(10)

—

(10)

109

3

86

198

73

8

43

2

126

(995)

(583)

(75)

(4)

(2,029)

(473)

(10)

(2,512)

(2,842)

(1,045)

44

(2)

(3,845)

—

—

153

153

—

—

25

—

25

—

—

—

—

—

(272)

(201)

(201)

—

—

—

(295)

(295)

109

3

241

353

73

8

68

2

151

(995)

(583)

(359)

(4)

(2,029)

(473)

(211)

(2,713)

(2,842)

(1,045)

(261)

(2)

(4,150)

(1,657)

(272)

(1,941)

December 31, 2016

(millions of Canadian dollars)

Financial assets

Current derivative assets

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Long-term derivative assets

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Financial liabilities

Current derivative liabilities

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

Long-term derivative liabilities

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Total net financial asset/(liability)

Foreign exchange contracts

Interest rate contracts

Commodity contracts

Other contracts

were as follows:

December 31, 2017

(fair value in millions of

Canadian dollars)

Commodity contracts - 

Commodity contracts - 

financial1

Natural gas

Crude

NGL

Power

physical1

Natural gas

Crude

NGL

Crude

Power

Commodity options2

The significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments 

Fair Value

Unobservable Input

Price/Volatility

Price/Volatility

Price/Volatility

Measurement

Minimum

Maximum

Weighted

Average

Unit of

Forward gas price

Forward crude price

Forward NGL price

Forward power price

Forward gas price

Forward crude price

Forward NGL price

2.67

43.76

0.30

15.39

2.51

34.38

0.28

5.52

65.60

1.83

71.41

7.57

80.56

1.94

3.38

51.03

1.32

50.72

2.93

69.01

0.93

$/mmbtu3

$/barrel

$/gallon

$/MW/H 

$/mmbtu3

$/barrel 

$/gallon 

Option volatility

Option volatility

15%

29%

24%

55%

22%

35%

(1)

(4)

(12)

(110)

(114)

(148)

3

(1)

—

(387)

1  Financial and physical forward commodity contracts are valued using a market approach valuation technique.

2  Commodity options contracts are valued using an option model valuation technique.

3  One million British thermal units (mmbtu).

If adjusted, the significant unobservable inputs disclosed in the table above would have a direct impact on 
the fair value of our Level 3 derivative instruments. The significant unobservable inputs used in the fair 
value measurement of Level 3 derivative instruments include forward commodity prices and, for option 
contracts, price volatility. Changes in forward commodity prices could result in significantly different fair 
values for our Level 3 derivatives. Changes in price volatility would change the value of the option 
contracts. Generally, a change in the estimate of forward commodity prices is unrelated to a change in the 
estimate of price volatility.

Changes in net fair value of derivative assets and liabilities classified as Level 3 in the fair value hierarchy 
were as follows:

Year ended December 31,
(millions of Canadian dollars)
Level 3 net derivative asset/(liability) at beginning of period
Total gain/(loss)

Included in earnings1
Included in OCI
Settlements

2017

2016

(295)

54

(184)
4
88
(387)

(113)
3
(239)
(295)

Level 3 net derivative liability at end of period
1  Reported within Transportation and other services revenues, Commodity costs and Operating and administrative expense in the 

Consolidated Statements of Earnings.

Our policy is to recognize transfers as at the last day of the reporting period. There were no transfers 
between levels as at December 31, 2017 or 2016.

FAIR VALUE OF OTHER FINANCIAL INSTRUMENTS
Our other long-term investments in other entities with no actively quoted prices are recorded at cost. The 
carrying value of other long-term investments recognized at cost totaled $99 million and $110 million as at 
December 31, 2017 and 2016, respectively.

We have Restricted long-term investments held in trust totaling $267 million and $90 million as at 
December 31, 2017 and 2016, respectively, which are recognized at fair value.

We have a held to maturity preferred share investment carried at its amortized cost of $371 million and 
$355 million as at December 31, 2017 and 2016, respectively. These preferred shares are entitled to a 
cumulative preferred dividend based on the yield of 10-year Government of Canada bonds plus a margin 
of 4.38%. The fair value of this preferred share investment approximates its face value of $580 million as 
at December 31, 2017 and 2016.

As at December 31, 2017 and 2016, our long-term debt had a carrying value of $64.0 billion and $40.8 
billion, respectively, before debt issuance costs and a fair value of $67.4 billion and $43.9 billion, 
respectively. We also have noncurrent notes receivable carried at book value recorded in Deferred 
amounts and other assets in the Consolidated Statements of Financial Position. As at December 31, 2017 
and 2016, the noncurrent notes receivable had a carrying value of $89 million and nil, and a fair value of 
$89 million and nil, respectively.

NET INVESTMENT HEDGES
We have designated a portion of our United States dollar denominated debt, as well as a portfolio of 
foreign exchange forward contracts, as a hedge of our net investment in United States dollar 
denominated investments and subsidiaries.

During the years ended December 31, 2017 and 2016, we recognized an unrealized foreign exchange 
gain on the translation of United States dollar denominated debt of $367 million and $121 million, 
respectively, and an unrealized gain on the change in fair value of our outstanding foreign exchange 

176

177

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
forward contracts of $286 million and $21 million, respectively, in OCI. During the years ended 
December 31, 2017 and 2016, we recognized a realized loss of $198 million and a realized gain of $3 
million, respectively, in OCI associated with the settlement of foreign exchange forward contracts and also 
recognized a realized gain of $23 million and $26 million, respectively, in OCI associated with the 
settlement of United States dollar denominated debt that had matured during the period. There was no 
ineffectiveness during the years ended December 31, 2017 and 2016. 

COMPONENTS OF PRETAX EARNINGS AND INCOME TAXES

Year ended December 31,

(millions of Canadian dollars)

Earnings/(loss) before income taxes

2017

2016

2015

24.   INCOME TAXES

INCOME TAX RATE RECONCILIATION

Year ended December 31,
(millions of Canadian dollars)
Earnings before income taxes
Canadian federal statutory income tax rate
Expected federal taxes at statutory rate
Increase/(decrease) resulting from:

Provincial and state income taxes1
Foreign and other statutory rate differentials
Impact of United States tax reform2
Effects of rate-regulated accounting
Foreign allowable interest deductions
Part VI.1 tax, net of federal Part I deduction
Goodwill write-down3
Intercompany sale of investment4
Non-taxable portion of gain on sale of investment to unrelated 

party5

Valuation allowance6

    Intercorporate investment in EIPLP7

Noncontrolling interests
Other8

2017

569

15%
85

2016

2015

2,451

15%

368

11
15%
2

133
(601)
(2,045)
(189)
(124)
68
15
—

34
(56)
—
(116)
(107)
56
—
6

(204)
310
—
(52)
(84)
55
—
23

—
(17)
77
(80)
(19)
(2,697)
(474.0)%

(61)
22
—
(15)
11
142
5.8% 1,545.5%

—
154
—
(28)
(6)
170

Income tax (recovery)/expense
Effective income tax rate
1  The change in provincial and state income taxes from 2016 to 2017 reflects the increase in earnings from the Canadian 

operations and the impact of the United States tax reform on state income tax expense.

2  The amount was due to the enactment of the “Tax Cuts and Jobs Act” by the United States on December 22, 2017, which 
included a reduction in the federal corporate income tax rate from 35% to 21% effective for taxation years beginning after 
December 31, 2017.  

3  The amount relates to the federal component of the tax effect a goodwill write-down pursuant to ASU 2017-04.
4  In November 2016 and September 2015, certain assets were sold to entities under common control. The intercompany gains 
realized on these transfers were eliminated. However, because these transactions involved the sale of partnership units, tax 
consequences have been recognized in earnings.

5  The amount in 2016 represents the federal component of the non-taxable portion of the gain on the sale of the South Prairie 

Region assets to unrelated party.

6  The decrease from 2015 to 2016 is due to the federal component of the tax effect of a valuation allowance on the deferred tax 

assets related to an outside basis temporary difference that, in 2015, was no longer more likely than not to be realized.

7  There was a change in assertion regarding the manner of recovery of the intercorporate investment in EIPLP such that deferred 

tax related to outside basis temporary differences was required to be recorded.

8  2015 included $17 million recovery related to the federal component of the tax effect of adjustments related to prior periods.

178

179

A valuation allowance has been established for certain loss and credit carryforwards, and outside basis 

temporary differences on investments that reduce deferred income tax assets to an amount that will more 

likely than not be realized.

As at December 31, 2017 and 2016, we recognized the benefit of unused tax loss carryforwards of $3.8 

billion and $2.5 billion, respectively, in Canada which expire in 2025 and beyond.

COMPONENTS OF DEFERRED INCOME TAXES

Deferred tax assets and liabilities are recognized for the future tax consequences of differences between 

carrying amounts of assets and liabilities and their respective tax bases. Major components of deferred 

income tax assets and liabilities are as follows:

2017

2016

Canada

United States

Other

Current income taxes

Canada

United States

Other

Deferred income taxes

Canada

United States

Other

Income tax (recovery)/expense

December 31,

(millions of Canadian dollars)

Deferred income tax liabilities

Property, plant and equipment

Investments

Regulatory assets

Other

Total deferred income tax liabilities

Deferred income tax assets

Financial instruments

Pension and OPEB plans

Loss carryforwards

Other

Total deferred income tax assets

Less valuation allowance

Total deferred income tax assets, net

Net deferred income tax liabilities

Presented as follows:

Total deferred income tax assets

Total deferred income tax liabilities

Net deferred income tax liabilities

2,200

(2,431)

800

569

129

46

5

180

299

(3,160)

(16)

(2,877)

(2,697)

2,034

(333)

750

2,451

74

21

4

99

188

(151)

6

43

142

(4,089)

(6,596)

(977)

(50)

(11,712)

697

258

1,781

1,057

3,793

(286)

3,507

(8,205)

1,090

(9,295)

(8,205)

(1,365)

808

568

11

157

3

3

163

(558)

565

—

7

170

(3,867)

(2,938)

(439)

(47)

(7,291)

1,215

219

1,189

374

2,997

(572)

2,425

(4,866)

1,170

(6,036)

(4,866)

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
forward contracts of $286 million and $21 million, respectively, in OCI. During the years ended 

December 31, 2017 and 2016, we recognized a realized loss of $198 million and a realized gain of $3 

million, respectively, in OCI associated with the settlement of foreign exchange forward contracts and also 

recognized a realized gain of $23 million and $26 million, respectively, in OCI associated with the 

settlement of United States dollar denominated debt that had matured during the period. There was no 

ineffectiveness during the years ended December 31, 2017 and 2016. 

24.   INCOME TAXES

INCOME TAX RATE RECONCILIATION

Year ended December 31,

(millions of Canadian dollars)

Earnings before income taxes

Canadian federal statutory income tax rate

Expected federal taxes at statutory rate

Increase/(decrease) resulting from:

Provincial and state income taxes1

Foreign and other statutory rate differentials

Impact of United States tax reform2

Effects of rate-regulated accounting

Foreign allowable interest deductions

Part VI.1 tax, net of federal Part I deduction

Goodwill write-down3

Intercompany sale of investment4

party5

Valuation allowance6

    Intercorporate investment in EIPLP7

Noncontrolling interests

Other8

Income tax (recovery)/expense

Effective income tax rate

Non-taxable portion of gain on sale of investment to unrelated 

2017

569

15%

85

2016

2015

2,451

15%

368

11

15%

2

133

(601)

(2,045)

(189)

(124)

68

15

—

—

(17)

77

(80)

(19)

(2,697)

(474.0)%

34

(56)

—

(116)

(107)

56

—

6

(61)

22

—

(15)

11

142

(204)

310

—

(52)

(84)

55

—

23

—

154

—

(28)

(6)

170

5.8% 1,545.5%

1  The change in provincial and state income taxes from 2016 to 2017 reflects the increase in earnings from the Canadian 

operations and the impact of the United States tax reform on state income tax expense.

2  The amount was due to the enactment of the “Tax Cuts and Jobs Act” by the United States on December 22, 2017, which 

included a reduction in the federal corporate income tax rate from 35% to 21% effective for taxation years beginning after 

December 31, 2017.  

3  The amount relates to the federal component of the tax effect a goodwill write-down pursuant to ASU 2017-04.

4  In November 2016 and September 2015, certain assets were sold to entities under common control. The intercompany gains 

realized on these transfers were eliminated. However, because these transactions involved the sale of partnership units, tax 

5  The amount in 2016 represents the federal component of the non-taxable portion of the gain on the sale of the South Prairie 

consequences have been recognized in earnings.

Region assets to unrelated party.

6  The decrease from 2015 to 2016 is due to the federal component of the tax effect of a valuation allowance on the deferred tax 

assets related to an outside basis temporary difference that, in 2015, was no longer more likely than not to be realized.

7  There was a change in assertion regarding the manner of recovery of the intercorporate investment in EIPLP such that deferred 

tax related to outside basis temporary differences was required to be recorded.

8  2015 included $17 million recovery related to the federal component of the tax effect of adjustments related to prior periods.

COMPONENTS OF PRETAX EARNINGS AND INCOME TAXES

Year ended December 31,
(millions of Canadian dollars)
Earnings/(loss) before income taxes

Canada
United States
Other

Current income taxes

Canada
United States
Other

Deferred income taxes

Canada
United States
Other

Income tax (recovery)/expense

2017

2016

2015

2,200
(2,431)
800
569

129
46
5
180

299
(3,160)
(16)
(2,877)
(2,697)

2,034
(333)
750
2,451

(1,365)
808
568
11

74
21
4
99

188
(151)
6
43
142

157
3
3
163

(558)
565
—
7
170

COMPONENTS OF DEFERRED INCOME TAXES
Deferred tax assets and liabilities are recognized for the future tax consequences of differences between 
carrying amounts of assets and liabilities and their respective tax bases. Major components of deferred 
income tax assets and liabilities are as follows:

December 31,
(millions of Canadian dollars)
Deferred income tax liabilities

Property, plant and equipment
Investments
Regulatory assets
Other

Total deferred income tax liabilities
Deferred income tax assets

Financial instruments
Pension and OPEB plans
Loss carryforwards
Other

Total deferred income tax assets
Less valuation allowance
Total deferred income tax assets, net
Net deferred income tax liabilities
Presented as follows:

Total deferred income tax assets
Total deferred income tax liabilities

Net deferred income tax liabilities

2017

2016

(4,089)
(6,596)
(977)
(50)
(11,712)

697
258
1,781
1,057
3,793
(286)
3,507
(8,205)

1,090
(9,295)
(8,205)

(3,867)
(2,938)
(439)
(47)
(7,291)

1,215
219
1,189
374
2,997
(572)
2,425
(4,866)

1,170
(6,036)
(4,866)

178

179

A valuation allowance has been established for certain loss and credit carryforwards, and outside basis 
temporary differences on investments that reduce deferred income tax assets to an amount that will more 
likely than not be realized.

As at December 31, 2017 and 2016, we recognized the benefit of unused tax loss carryforwards of $3.8 
billion and $2.5 billion, respectively, in Canada which expire in 2025 and beyond.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As at December 31, 2017 and 2016, we recognized the benefit of unused tax loss carryforwards of $2.1 
billion and $1.3 billion, respectively, in the United States which expire in 2021 and beyond.

As at December 31, 2017 and 2016, we recognized the benefit of unused capital loss carryforwards of 
$143 million and nil, respectively, in Canada which can be carried forward indefinitely.

As at December 31, 2017 and 2016, we recognized the benefit of unused capital loss carryforwards of 
$20 million and nil, respectively, in the United States which will expire in 2021.

We have not provided for deferred income taxes on the difference between the carrying value of 
substantially all of our foreign subsidiaries and their corresponding tax basis as the earnings of those 
subsidiaries are intended to be permanently reinvested in their operations. As such these investments are 
not anticipated to give rise to income taxes in the foreseeable future. The difference between the carrying 
values of the investments and their tax bases is largely a result of unremitted earnings and currency 
translation adjustments. The unremitted earnings and currency translation adjustment for which no 
deferred taxes have been recognized in respect of foreign subsidiaries were $2.1 billion and $4.1 billion 
for the period December 31, 2017 and 2016, respectively. If such earnings are remitted, in the form of 
dividends or otherwise, we may be subject to income taxes and foreign withholding taxes. The 
determination of the amount of unrecognized deferred income tax liabilities on such amounts is not 
practicable.

Enbridge and one or more of our subsidiaries are subject to taxation in Canada, the United States and 
other foreign jurisdictions. The material jurisdictions in which we are subject to potential examinations 
include the United States (Federal) and Canada (Federal, Alberta and Ontario). We are open to 
examination by Canadian tax authorities for the 2009 to 2017 tax years and by United States tax 
authorities for the 2014 to 2017 tax years. We are currently under examination for income tax matters in 
Canada for the 2013 to 2016 tax years. We are not currently under examination for income tax matters in 
any other material jurisdiction where we are subject to income tax.

United States Tax Reform
On December 22, 2017, the United States enacted the TCJA. The changes in the TCJA are effective for 
taxation years beginning after December 31, 2017. While the changes are broad and complex, the most 
significant change is the reduction in the corporate federal income tax rate from 35% to 21%. We are also 
impacted by a one-time deemed repatriation or “toll” tax on undistributed earnings and profits of United 
States controlled foreign affiliates, including Canadian subsidiaries.

We have made reasonable estimates for the measurement and accounting of certain effects of the TCJA 
in accordance with SEC Staff Accounting Bulletin No.118 (SAB 118). We recorded a provisional $34 
million increase to our 2017 current income tax provision related to the toll tax, payable over eight years. 
We recorded a provisional $2.0 billion decrease to our 2017 deferred income tax provision related to the 
reduction in the corporate federal income tax rate. The accounting for these provisional items decreased 
our accumulated deferred income tax liability by $3.1 billion and increased our regulatory liability by $1.1 
billion. We have also adjusted our valuation allowance for certain deferred tax assets existing at 
December 31, 2016 for the reduction in the corporate federal income tax rate by $0.2 billion. We have 
recognized these provisional tax impacts and included these amounts in our consolidated financial 
statements for the year ended December 31, 2017. The ultimate impact may differ from these provisional 
amounts, possibly materially, due to, among other things, additional analysis, changes in interpretations 
and assumptions we have made, additional regulatory guidance that may be issued, and actions we may 
take as a result of the TCJA. The accounting is expected to be complete when the 2017 US corporate 
income tax return is filed in 2018.

As provided for under SAB 118, we have not recorded the impact for certain items under the TCJA for 
which we have not yet been able to gather, prepare and analyze the necessary information in reasonable 
detail to complete the ASC 740 accounting. For these items, the current and deferred taxes were 

recognized and measured based on the provisions of the tax laws that were in effect immediately prior to 

the TCJA being enacted. These certain items include but are not limited to the computation of state 

income taxes as there is uncertainty on conformity to the federal tax system following the TCJA, global 

intangible low taxed income, and base erosion and anti-abuse tax. The determination of the impact of the 

income tax effects of these items will require additional analysis of historical records and further 

interpretation of the TCJA from yet to be issued United States Treasury regulations which will require 

more time, information and resources than currently available to us.

UNRECOGNIZED TAX BENEFITS

Year ended December 31,

(millions of Canadian dollars)

Unrecognized tax benefits at beginning of year

Gross increases for tax positions of current year

Gross increases for tax positions of prior year

Change in translation of foreign currency

Lapses of statute of limitations

Settlements

Unrecognized tax benefits at end of year

2017

2016

84

15

65

(2)

(8)

(4)

150

65

27

—

(2)

(6)

—

84

The unrecognized tax benefits as at December 31, 2017, if recognized, would impact our effective income 

tax rate. We do not anticipate further adjustments to the unrecognized tax benefits during the next 12 

months that would have a material impact on our consolidated financial statements.

We recognize accrued interest and penalties related to unrecognized tax benefits as a component of 

income taxes. Income taxes for the years ended December 31, 2017 and 2016 included $3 million and $1 

million recoveries, respectively, of interest and penalties. As at December 31, 2017 and 2016, interest and 

penalties of $8 million and $6 million, respectively, have been accrued.

25.  PENSION AND OTHER POSTRETIREMENT BENEFITS 

PENSION PLANS

We maintain registered and non-registered, contributory and non-contributory pension plans which 

provide defined benefit and/or defined contribution pension benefits covering substantially all employees. 

The Canadian Plans provide Company funded defined benefit and/or defined contribution pension 

benefits to our Canadian employees. The United States Plans provide Company funded defined benefit 

pension benefits to our United States employees. We also maintain supplemental pension plans that 

provide pension benefits in excess of the basic plans for certain employees.

Defined Benefit Plans

Benefits payable from the defined benefit plans are based on each plan participant’s years of service and 

final average remuneration. These benefits are partially inflation-indexed after a plan participant’s 

retirement. Our contributions are made in accordance with independent actuarial valuations and are 

invested primarily in publicly-traded equity and fixed income securities. 

Defined Contribution Plans

Contributions are generally based on each plan participant’s age, years of service and current eligible 

remuneration. For defined contribution plans, benefit costs equal amounts required to be contributed by 

us.

180

181

 
 
 
 
 
As at December 31, 2017 and 2016, we recognized the benefit of unused tax loss carryforwards of $2.1 

billion and $1.3 billion, respectively, in the United States which expire in 2021 and beyond.

As at December 31, 2017 and 2016, we recognized the benefit of unused capital loss carryforwards of 

$143 million and nil, respectively, in Canada which can be carried forward indefinitely.

As at December 31, 2017 and 2016, we recognized the benefit of unused capital loss carryforwards of 

$20 million and nil, respectively, in the United States which will expire in 2021.

We have not provided for deferred income taxes on the difference between the carrying value of 

substantially all of our foreign subsidiaries and their corresponding tax basis as the earnings of those 

subsidiaries are intended to be permanently reinvested in their operations. As such these investments are 

not anticipated to give rise to income taxes in the foreseeable future. The difference between the carrying 

values of the investments and their tax bases is largely a result of unremitted earnings and currency 

translation adjustments. The unremitted earnings and currency translation adjustment for which no 

deferred taxes have been recognized in respect of foreign subsidiaries were $2.1 billion and $4.1 billion 

for the period December 31, 2017 and 2016, respectively. If such earnings are remitted, in the form of 

dividends or otherwise, we may be subject to income taxes and foreign withholding taxes. The 

determination of the amount of unrecognized deferred income tax liabilities on such amounts is not 

practicable.

Enbridge and one or more of our subsidiaries are subject to taxation in Canada, the United States and 

other foreign jurisdictions. The material jurisdictions in which we are subject to potential examinations 

include the United States (Federal) and Canada (Federal, Alberta and Ontario). We are open to 

examination by Canadian tax authorities for the 2009 to 2017 tax years and by United States tax 

authorities for the 2014 to 2017 tax years. We are currently under examination for income tax matters in 

Canada for the 2013 to 2016 tax years. We are not currently under examination for income tax matters in 

any other material jurisdiction where we are subject to income tax.

United States Tax Reform

On December 22, 2017, the United States enacted the TCJA. The changes in the TCJA are effective for 

taxation years beginning after December 31, 2017. While the changes are broad and complex, the most 

significant change is the reduction in the corporate federal income tax rate from 35% to 21%. We are also 

impacted by a one-time deemed repatriation or “toll” tax on undistributed earnings and profits of United 

States controlled foreign affiliates, including Canadian subsidiaries.

We have made reasonable estimates for the measurement and accounting of certain effects of the TCJA 

in accordance with SEC Staff Accounting Bulletin No.118 (SAB 118). We recorded a provisional $34 

million increase to our 2017 current income tax provision related to the toll tax, payable over eight years. 

We recorded a provisional $2.0 billion decrease to our 2017 deferred income tax provision related to the 

reduction in the corporate federal income tax rate. The accounting for these provisional items decreased 

our accumulated deferred income tax liability by $3.1 billion and increased our regulatory liability by $1.1 

billion. We have also adjusted our valuation allowance for certain deferred tax assets existing at 

December 31, 2016 for the reduction in the corporate federal income tax rate by $0.2 billion. We have 

recognized these provisional tax impacts and included these amounts in our consolidated financial 

statements for the year ended December 31, 2017. The ultimate impact may differ from these provisional 

amounts, possibly materially, due to, among other things, additional analysis, changes in interpretations 

and assumptions we have made, additional regulatory guidance that may be issued, and actions we may 

take as a result of the TCJA. The accounting is expected to be complete when the 2017 US corporate 

income tax return is filed in 2018.

As provided for under SAB 118, we have not recorded the impact for certain items under the TCJA for 

which we have not yet been able to gather, prepare and analyze the necessary information in reasonable 

detail to complete the ASC 740 accounting. For these items, the current and deferred taxes were 

recognized and measured based on the provisions of the tax laws that were in effect immediately prior to 
the TCJA being enacted. These certain items include but are not limited to the computation of state 
income taxes as there is uncertainty on conformity to the federal tax system following the TCJA, global 
intangible low taxed income, and base erosion and anti-abuse tax. The determination of the impact of the 
income tax effects of these items will require additional analysis of historical records and further 
interpretation of the TCJA from yet to be issued United States Treasury regulations which will require 
more time, information and resources than currently available to us.

UNRECOGNIZED TAX BENEFITS

Year ended December 31,
(millions of Canadian dollars)
Unrecognized tax benefits at beginning of year
Gross increases for tax positions of current year
Gross increases for tax positions of prior year
Change in translation of foreign currency
Lapses of statute of limitations
Settlements
Unrecognized tax benefits at end of year

2017

2016

84
15
65
(2)
(8)
(4)
150

65
27
—
(2)
(6)
—
84

The unrecognized tax benefits as at December 31, 2017, if recognized, would impact our effective income 
tax rate. We do not anticipate further adjustments to the unrecognized tax benefits during the next 12 
months that would have a material impact on our consolidated financial statements.

We recognize accrued interest and penalties related to unrecognized tax benefits as a component of 
income taxes. Income taxes for the years ended December 31, 2017 and 2016 included $3 million and $1 
million recoveries, respectively, of interest and penalties. As at December 31, 2017 and 2016, interest and 
penalties of $8 million and $6 million, respectively, have been accrued.

25.  PENSION AND OTHER POSTRETIREMENT BENEFITS 

PENSION PLANS
We maintain registered and non-registered, contributory and non-contributory pension plans which 
provide defined benefit and/or defined contribution pension benefits covering substantially all employees. 
The Canadian Plans provide Company funded defined benefit and/or defined contribution pension 
benefits to our Canadian employees. The United States Plans provide Company funded defined benefit 
pension benefits to our United States employees. We also maintain supplemental pension plans that 
provide pension benefits in excess of the basic plans for certain employees.

Defined Benefit Plans
Benefits payable from the defined benefit plans are based on each plan participant’s years of service and 
final average remuneration. These benefits are partially inflation-indexed after a plan participant’s 
retirement. Our contributions are made in accordance with independent actuarial valuations and are 
invested primarily in publicly-traded equity and fixed income securities. 

Defined Contribution Plans
Contributions are generally based on each plan participant’s age, years of service and current eligible 
remuneration. For defined contribution plans, benefit costs equal amounts required to be contributed by 
us.

180

181

 
 
 
 
 
Benefit Obligation, Plan Assets and Funded Status
The following table details the changes in the projected benefit obligation, the fair value of plan assets 
and the recorded asset or liability for our defined benefit pension plans:

Amount Recognized in Accumulated Other Comprehensive Income

The amounts of pre-tax AOCI relating to our pension plans are as follows:  

December 31,
(millions of Canadian dollars)
Change in projected benefit obligation
Projected benefit obligation at beginning of year

Service cost
Interest cost
Actuarial loss
Benefits paid
Foreign currency exchange rate changes
Acquired in Merger Transaction
Plan settlements
Other

Projected benefit obligation at end of year1
Change in plan assets
Fair value of plan assets at beginning of year

Actual return on plan assets
Employer contributions
Benefits paid
Foreign currency exchange rate changes
Acquired in Merger Transaction
Plan settlements
Other

Fair value of plan assets at end of year2
Underfunded status at end of year
Presented as follows:

Deferred amounts and other assets
Accounts payable and other
Other long-term liabilities

Canada

2017

2016

United States
2017

2016

2,270
156
116
145
(165)
—
1,505
—
6
4,033

2,019
308
161
(165)
—
1,290
—
6
3,619
(414)

38
(60)
(392)
(414)

2,064
129
73
97
(87)
—
—
—
(6)
2,270

1,886
146
74
(87)
—
—
—
—
2,019
(251)

5
—
(256)
(251)

508
48
35
57
(42)
(63)
811
(59)
(16)
1,279

361
113
57
(42)
(51)
731
(59)
(13)
1,097
(182)

—
(3)
(179)
(182)

487
26
16
15
(21)
(14)
—
—
(1)
508

343
22
28
(21)
(10)
—
—
(1)
361
(147)

—
—
(147)
(147)

1  The accumulated benefit obligation for our Canadian pension plans was $3.7 billion and $978 million as at December 31, 2017 

and 2016, respectively. The accumulated benefit obligation for our United States pension plans was $$1.2 billion and $462 million 
as at December 31, 2017 and 2016, respectively. 

2  Assets in the amount of $9 million (2016 - $8 million) and $40 million (2016 - $44 million), related to our Canadian and United 
States non-registered supplemental pension plan obligations, are held in grantor trusts that, in accordance with federal tax 
regulations, are not restricted from creditors. These assets are committed for the future settlement of benefit obligations included 
in the underfunded status as at the end of the year, however they are excluded from plan assets for accounting purposes.

Certain of our pension plans have accumulated benefit obligations in excess of the fair value of plan 
assets. For these plans, the projected benefit obligations, accumulated benefit obligations and the fair 
value of plan assets were as follows: 

December 31,
(millions of Canadian dollars)
Projected benefit obligations
Accumulated benefit obligations
Fair value of plan assets 

Canada

2017

2016

United States
2017

2016

1,444
1,306
1,131

2,188
978
1,927

1,280
1,217
1,098

508
462
361

182

183

The components of net benefit cost and other amounts recognized in pre-tax OCI related to our pension 

December 31,

(millions of Canadian dollars)

Net actuarial gain

Total amount recognized in AOCI

Net Benefit Costs Recognized

plans are as follows: 

Year ended December 31, 

(millions of Canadian dollars) 

Service cost

Interest cost

Expected return on plan assets 

Amortization of actuarial loss 

Net defined benefit costs

Defined contribution benefit costs 

Net benefit cost recognized in Earnings 

Amount recognized in OCI:

Net actuarial (gain)/loss arising during the year

Amortization of net actuarial gain

Total amount recognized in OCI

Total amount recognized in Comprehensive income

Canada

United States

2017

2016

2017

2016

334

334

310

310

112

112

121

121

Canada

United States

2017

2016

2015

2017

2016

2015

156

116

(201)

29

100

11

111

38

(14)

24

135

129

73

(127)

32

107

3

110

28

(14)

14

124

137

81

(120)

39

137

3

140

(58)

(20)

(78)

62

(57)

(21)

(22)

48

35

10

36

15

51

—

(9)

(9)

42

26

16

3

24

—

24

16

(6)

10

34

30

17

10

35

—

35

(19)

(10)

(29)

6

We estimate that approximately $25 million related to the Canadian pension plans and $4 million related 

to the United States pension plans as at December 31, 2017 will be reclassified from AOCI into earnings 

The weighted average assumptions made in the measurement of the projected benefit obligations and 

net benefit cost of our pension plans are as follows:

Canada

United States

2017

2016

2015

2017

2016

2015

3.6%

3.2%

4.0%

6.5%

3.7%

4.0%

3.7%

4.2%

6.5%

3.6%

4.2%

3.6%

4.0%

4.4%

2.5%

3.5%

3.1%

4.0%

7.2%

3.3%

4.0%

3.3%

4.1%

7.2%

3.2%

4.1%

3.3%

3.7%

7.1%

4.0%

in the next 12 months.

Actuarial Assumptions 

Projected benefit obligations

Discount rate

Rate of salary increase

Net benefit cost

Discount rate

Rate of return on plan assets

Rate of salary increase

The overall expected rate of return is based on the asset allocation targets with estimates for returns on 

equity and debt securities based on long-term expectations.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Benefit Obligation, Plan Assets and Funded Status

The following table details the changes in the projected benefit obligation, the fair value of plan assets 

and the recorded asset or liability for our defined benefit pension plans:

Projected benefit obligation at end of year1

4,033

2,270

1,279

December 31,

(millions of Canadian dollars)

Change in projected benefit obligation

Projected benefit obligation at beginning of year

Service cost

Interest cost

Actuarial loss

Benefits paid

Plan settlements

Other

Foreign currency exchange rate changes

Acquired in Merger Transaction

Change in plan assets

Fair value of plan assets at beginning of year

Actual return on plan assets

Employer contributions

Benefits paid

Foreign currency exchange rate changes

Acquired in Merger Transaction

Plan settlements

Other

Fair value of plan assets at end of year2

Underfunded status at end of year

Presented as follows:

Deferred amounts and other assets

Accounts payable and other

Other long-term liabilities

Canada

United States

2017

2016

2017

2016

2,270

156

116

145

(165)

1,505

—

—

6

2,019

308

161

(165)

1,290

—

—

6

3,619

(414)

38

(60)

(392)

(414)

2,064

129

73

97

(87)

—

—

—

(6)

1,886

146

74

(87)

—

—

—

—

2,019

(251)

5

—

(256)

(251)

508

48

35

57

(42)

(63)

811

(59)

(16)

361

113

57

(42)

(51)

731

(59)

(13)

1,097

(182)

—

(3)

(179)

(182)

487

26

16

15

(21)

(14)

—

—

(1)

508

343

22

28

(21)

(10)

—

—

(1)

361

(147)

—

—

(147)

(147)

1  The accumulated benefit obligation for our Canadian pension plans was $3.7 billion and $978 million as at December 31, 2017 

and 2016, respectively. The accumulated benefit obligation for our United States pension plans was $$1.2 billion and $462 million 

as at December 31, 2017 and 2016, respectively. 

2  Assets in the amount of $9 million (2016 - $8 million) and $40 million (2016 - $44 million), related to our Canadian and United 

States non-registered supplemental pension plan obligations, are held in grantor trusts that, in accordance with federal tax 

regulations, are not restricted from creditors. These assets are committed for the future settlement of benefit obligations included 

in the underfunded status as at the end of the year, however they are excluded from plan assets for accounting purposes.

Certain of our pension plans have accumulated benefit obligations in excess of the fair value of plan 

assets. For these plans, the projected benefit obligations, accumulated benefit obligations and the fair 

value of plan assets were as follows: 

December 31,

(millions of Canadian dollars)

Projected benefit obligations

Accumulated benefit obligations

Fair value of plan assets 

Canada

United States

2017

2016

2017

2016

1,444

1,306

1,131

2,188

978

1,927

1,280

1,217

1,098

508

462

361

Amount Recognized in Accumulated Other Comprehensive Income
The amounts of pre-tax AOCI relating to our pension plans are as follows:  

December 31,
(millions of Canadian dollars)
Net actuarial gain
Total amount recognized in AOCI

Canada

2017

2016

United States
2017

2016

334
334

310
310

112
112

121
121

Net Benefit Costs Recognized
The components of net benefit cost and other amounts recognized in pre-tax OCI related to our pension 
plans are as follows: 

Year ended December 31, 
(millions of Canadian dollars) 
Service cost
Interest cost
Expected return on plan assets 
Amortization of actuarial loss 
Net defined benefit costs
Defined contribution benefit costs 
Net benefit cost recognized in Earnings 
Amount recognized in OCI:

Net actuarial (gain)/loss arising during the year
Amortization of net actuarial gain

Total amount recognized in OCI
Total amount recognized in Comprehensive income

Canada
2016

2017

United States

2015

2017

2016

2015

156
116
(201)
29
100
11
111

38
(14)
24
135

129
73
(127)
32
107
3
110

28
(14)
14
124

137
81
(120)
39
137
3
140

(58)
(20)
(78)
62

48
35
(57)
10
36
15
51

—
(9)
(9)
42

26
16
(21)
3
24
—
24

16
(6)
10
34

30
17
(22)
10
35
—
35

(19)
(10)
(29)
6

We estimate that approximately $25 million related to the Canadian pension plans and $4 million related 
to the United States pension plans as at December 31, 2017 will be reclassified from AOCI into earnings 
in the next 12 months.

Actuarial Assumptions 
The weighted average assumptions made in the measurement of the projected benefit obligations and 
net benefit cost of our pension plans are as follows:

Projected benefit obligations
Discount rate
Rate of salary increase
Net benefit cost
Discount rate
Rate of return on plan assets
Rate of salary increase

Canada
2016

2017

United States

2015

2017

2016

2015

3.6%
3.2%

4.0%
6.5%
3.7%

4.0%
3.7%

4.2%
6.5%
3.6%

4.2%
3.6%

4.0%
4.4%
2.5%

3.5%
3.1%

4.0%
7.2%
3.3%

4.0%
3.3%

4.1%
7.2%
3.2%

4.1%
3.3%

3.7%
7.1%
4.0%

The overall expected rate of return is based on the asset allocation targets with estimates for returns on 
equity and debt securities based on long-term expectations.

182

183

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
OTHER POSTRETIREMENT BENEFITS
OPEB primarily includes supplemental health and dental, health spending accounts and life insurance 
coverage for qualifying retired employees on a non-contributory basis.

The following table details the changes in the accumulated postretirement benefit obligation, the fair value 
of plan assets and the recorded asset or liability for our OPEB plans:

December 31,
(millions of Canadian dollars)
Change in accumulated postretirement benefit obligation
Accumulated postretirement benefit obligation at beginning of year 

Service cost
Interest cost
Participant contributions
Actuarial (gain)/loss
Benefits paid
Foreign currency exchange rate changes
Acquired in Merger Transaction
Other

Accumulated postretirement benefit obligation at end of year
Change in plan assets
Fair value of plan assets at beginning of year

Actual return on plan assets
Employer contributions
Participant contributions
Benefits paid
Foreign currency exchange rate changes
Acquired in Merger Transaction

Fair value of plan assets at end of year
Underfunded status at end of year
Presented as follows:

Deferred amounts and other assets
Accounts payable and other
Other long-term liabilities

Canada

2017

2016

United States
2017

2016

179
7
10
—
(8)
(10)
—
146
(3)
321

—
—
10
—
(10)
—
—
—
(321)

—
(12)
(309)
(321)

173
4
6
—
2
(6)
—
—
—
179

—
—
6
—
(6)
—
—
—
(179)

—
(7)
(172)
(179)

133
5
10
4
(34)
(19)
(17)
254
1
337

115
21
1
4
(19)
(11)
102
213
(124)

7
(7)
(124)
(124)

135
4
5
1
10
(6)
(4)
—
(12)
133

115
5
3
1
(6)
(3)
—
115
(18)

4
—
(22)
(18)

Amount Recognized in Accumulated Other Comprehensive Income
The amounts of pre-tax AOCI relating to our OPEB plans are as follows:  

December 31,
(millions of Canadian dollars)
Net actuarial gain/(loss)
Prior service cost
Total amount recognized in AOCI

Canada

2017

2016

United States
2017

2016

17
(2)
15

25
2
27

(15)
(11)
(26)

29
(15)
14

Net Benefit Costs Recognized

The components of net benefit cost and other amounts recognized in pre-tax OCI related to our OPEB 

plans are as follows: 

Year ended December 31,

(millions of Canadian dollars)

Service cost

Interest cost

Expected return on plan assets

Amortization of actuarial loss and prior service cost

Net OPEB cost recognized in Earnings

Amount recognized in OCI:

Net actuarial (gain)/loss arising during the year

Amortization of net actuarial (gain)/loss

Prior service cost

Total amount recognized in OCI

Total amount recognized in Comprehensive income

next 12 months.

Actuarial Assumptions 

Canada

United States

2017

2016

2015

2017

2016

2015

7

10

—

1

18

(8)

(1)

(3)

(12)

6

4

6

—

—

10

2

(1)

—

1

11

3

7

—

1

11

2

(1)

—

1

12

(10)

5

10

—

5

(42)

1

1

(40)

(35)

4

5

(6)

—

3

12

(1)

(12)

(1)

2

5

4

(6)

—

3

16

—

(7)

9

12

We estimate that approximately nil related to the Canadian OPEB plans and $2 million related to the 

United States OPEB plans as at December 31, 2017 will be reclassified from AOCI into earnings in the 

The weighted average assumptions made in the measurement of the accumulated postretirement benefit 

obligations and net benefit cost of our OPEB plans are as follows:

Accumulated postretirement benefit 

obligations

Discount rate

Net OPEB cost

Discount rate

Rate of return on plan assets

Canada

United States

2017

2016

2015

2017

2016

2015

3.6%

4.0%

4.2%

3.5%

3.6%

4.2%

4.0%

4.2%

4.0%

4.0%

6.0%

3.8%

6.0%

3.9%

6.0%

The overall expected rate of return is based on the asset allocation targets with estimates for returns on 

equity and debt securities based on long-term expectations.

Assumed Health Care Cost Trend Rates

The assumed rates for the next year used to measure the expected cost of benefits are as follows:

Health care cost trend rate assumed for next year 

Rate to which the cost trend is assumed to decline (the 

ultimate trend rate)

Year that the rate reaches the ultimate trend rate

Canada

United States

2017

5.5%

4.4%

2034

2016

5.4%

4.5%

2034

2017

7.4%

4.5%

2037

2016

6.9%

4.5%

2037

184

185

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
OTHER POSTRETIREMENT BENEFITS

OPEB primarily includes supplemental health and dental, health spending accounts and life insurance 

coverage for qualifying retired employees on a non-contributory basis.

Net Benefit Costs Recognized
The components of net benefit cost and other amounts recognized in pre-tax OCI related to our OPEB 
plans are as follows: 

The following table details the changes in the accumulated postretirement benefit obligation, the fair value 

of plan assets and the recorded asset or liability for our OPEB plans:

Change in accumulated postretirement benefit obligation

Accumulated postretirement benefit obligation at beginning of year 

173

December 31,

(millions of Canadian dollars)

Service cost

Interest cost

Participant contributions

Actuarial (gain)/loss

Benefits paid

Foreign currency exchange rate changes

Acquired in Merger Transaction

Other

Change in plan assets

Fair value of plan assets at beginning of year

Actual return on plan assets

Employer contributions

Participant contributions

Benefits paid

Foreign currency exchange rate changes

Acquired in Merger Transaction

Fair value of plan assets at end of year

Underfunded status at end of year

Presented as follows:

Deferred amounts and other assets

Accounts payable and other

Other long-term liabilities

Canada

United States

2017

2016

2017

2016

179

7

10

—

(8)

(10)

—

146

(3)

321

—

—

10

—

—

—

—

(10)

4

6

—

2

(6)

—

—

—

—

—

6

—

—

—

—

(6)

(321)

(179)

—

(12)

(309)

(321)

—

(7)

(172)

(179)

133

5

10

4

(34)

(19)

(17)

254

1

337

115

21

1

4

(19)

(11)

102

213

(124)

7

(7)

(124)

(124)

135

4

5

1

10

(6)

(4)

—

(12)

133

115

5

3

1

(6)

(3)

—

115

(18)

4

—

(22)

(18)

Accumulated postretirement benefit obligation at end of year

179

Amount Recognized in Accumulated Other Comprehensive Income

The amounts of pre-tax AOCI relating to our OPEB plans are as follows:  

December 31,

(millions of Canadian dollars)

Net actuarial gain/(loss)

Prior service cost

Total amount recognized in AOCI

Canada

United States

2017

2016

2017

2016

17

(2)

15

25

2

27

(15)

(11)

(26)

29

(15)

14

Year ended December 31,
(millions of Canadian dollars)
Service cost
Interest cost
Expected return on plan assets
Amortization of actuarial loss and prior service cost
Net OPEB cost recognized in Earnings
Amount recognized in OCI:

Net actuarial (gain)/loss arising during the year
Amortization of net actuarial (gain)/loss
Prior service cost

Total amount recognized in OCI
Total amount recognized in Comprehensive income

Canada

2017

2016

2015

United States
2016

2017

2015

7
10
—
1
18

(8)
(1)
(3)
(12)
6

4
6
—
—
10

2
(1)
—
1
11

3
7
—
1
11

2
(1)
—
1
12

5
10
(10)
—
5

(42)
1
1
(40)
(35)

4
5
(6)
—
3

12
(1)
(12)
(1)
2

5
4
(6)
—
3

16
—
(7)
9
12

We estimate that approximately nil related to the Canadian OPEB plans and $2 million related to the 
United States OPEB plans as at December 31, 2017 will be reclassified from AOCI into earnings in the 
next 12 months.

Actuarial Assumptions 
The weighted average assumptions made in the measurement of the accumulated postretirement benefit 
obligations and net benefit cost of our OPEB plans are as follows:

Accumulated postretirement benefit 

obligations
Discount rate
Net OPEB cost
Discount rate
Rate of return on plan assets

Canada
2016

2017

United States

2015

2017

2016

2015

3.6%

4.0%

4.2%

3.5%

3.6%

4.2%

4.0%

4.2%

4.0%

4.0%
6.0%

3.8%
6.0%

3.9%
6.0%

The overall expected rate of return is based on the asset allocation targets with estimates for returns on 
equity and debt securities based on long-term expectations.

Assumed Health Care Cost Trend Rates
The assumed rates for the next year used to measure the expected cost of benefits are as follows:

Health care cost trend rate assumed for next year 
Rate to which the cost trend is assumed to decline (the 

ultimate trend rate)

Year that the rate reaches the ultimate trend rate

Canada

2017
5.5%

4.4%
2034

2016
5.4%

4.5%
2034

United States
2017
7.4%

2016
6.9%

4.5%
2037

4.5%
2037

184

185

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
A 1% change in the assumed health care cost trend rate would have the following effects for the year 
ended and as at December 31, 2017:

The following tables summarize the fair value of plan assets for our pension and OPEB plans recorded at 

(millions of Canadian dollars)
Effect on total service and interest costs 
Effect on accumulated postretirement benefit obligation

Canada

1%
Increase

1% 
Decrease

United States
1%
Increase

1% 
Decrease

2
28

(1)
(23)

1
20

(1)
(17)

PLAN ASSETS
We manage the investment risk of our pension funds by setting a long-term asset mix policy for each plan 
after consideration of: (i) the nature of pension plan liabilities; (ii) the investment horizon of the plan; 
(iii) the going concern and solvency funded status and cash flow requirements of the plan; (iv) our 
operating environment and financial situation and our ability to withstand fluctuations in pension 
contributions; and (v) the future economic and capital markets outlook with respect to investment returns, 
volatility of returns and correlation between assets. 

The asset allocation targets and major categories of plan assets are as follows:

Asset Category
Equity securities
Fixed income securities
Other

Target
Allocation
40.0 - 70.0%
27.5 - 60.0%
0.0 - 20.0%

2017
52.0%
34.2%
13.8%

Target
Allocation

2016
47.0% 52.5 - 70.0%
39.0% 27.5 - 30.0%
14.0% 0.0 - 20.0%

December 31,

2017
47.1%
47.7%
5.2%

2016
55.4%
33.0%
11.6%

Canada

December 31,

United States

each fair value hierarchy level.

Pension

(millions of Canadian dollars)

December 31, 2017

Cash and cash equivalents

Equity securities

Canada

United States

Global

Fixed income securities

Government

Corporate

Infrastructure and real estate4

Forward currency contracts

Total pension plan assets at fair

value

December 31, 2016

Cash and cash equivalents

Equity securities

United States

Canada

Global

Fixed income securities

Government

Corporate

Infrastructure and real estate4

Forward currency contracts

Total pension plan assets at fair

value

OPEB

(millions of Canadian dollars)

December 31, 2017

Cash and cash equivalents

Equity securities

United States

Global

Fixed income securities

Government

Total OPEB plan assets at fair 

value

December 31, 2016

Cash and cash equivalents

Equity securities

United States

Global

Fixed income securities

Government

Total OPEB plan assets at fair 

value

2,861

169

842

427

189

933

301

—

—

156

219

425

165

351

277

—

—

—

—

—

—

—

—

—

—

—

—

Level 11

Level 22

Level 33

Total

Level 11

Level 22

Level 33

Total

Canada

United States

425

(10)

418

140

—

—

—

—

3

—

—

—

—

—

3

—

2

—

—

—

—

—

—

—

—

—

—

340

—

340

—

—

—

—

—

—

—

—

—

—

—

—

281

—

281

—

—

—

—

—

—

—

—

—

—

169

1,267

427

189

933

304

340

(10)

3,619

156

219

425

305

351

280

281

2

—

—

—

—

—

—

—

—

—

—

2

—

343

122

—

522

—

—

989

3

54

—

116

—

116

—

—

289

213

1

80

36

96

1

35

34

45

115

—

—

—

52

—

1

—

(1)

52

—

—

—

30

—

—

—

2

32

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

56

—

56

—

—

—

—

—

—

40

—

40

—

—

—

—

—

—

—

—

—

—

1,097

2

—

343

174

—

523

56

(1)

3

54

—

146

—

116

40

2

361

213

1

80

36

96

1

35

34

45

115

1,593

145

2,019

Level 11

Level 22

Level 33

Total

Level 11

Level 22

Level 33

Total

Canada

United States

1  Level 1 assets include assets with quoted prices in active markets for identical assets.

2  Level 2 assets include assets with significant observable inputs.

3  Level 3 assets include assets with significant unobservable inputs.

4  The fair values of the infrastructure and real estate investments are established through the use of valuation models.

186

187

 
 
 
A 1% change in the assumed health care cost trend rate would have the following effects for the year 

ended and as at December 31, 2017:

The following tables summarize the fair value of plan assets for our pension and OPEB plans recorded at 
each fair value hierarchy level.

(millions of Canadian dollars)

Effect on total service and interest costs 

Effect on accumulated postretirement benefit obligation

Canada

1%

1% 

United States

1%

1% 

Increase

Decrease

Increase

Decrease

2

28

(1)

(23)

1

20

(1)

(17)

PLAN ASSETS

We manage the investment risk of our pension funds by setting a long-term asset mix policy for each plan 

after consideration of: (i) the nature of pension plan liabilities; (ii) the investment horizon of the plan; 

(iii) the going concern and solvency funded status and cash flow requirements of the plan; (iv) our 

operating environment and financial situation and our ability to withstand fluctuations in pension 

contributions; and (v) the future economic and capital markets outlook with respect to investment returns, 

volatility of returns and correlation between assets. 

The asset allocation targets and major categories of plan assets are as follows:

Asset Category

Equity securities

Fixed income securities

Other

Canada

United States

Target

Allocation

40.0 - 70.0%

27.5 - 60.0%

0.0 - 20.0%

December 31,

Target

December 31,

2017

52.0%

34.2%

13.8%

2016

Allocation

47.0% 52.5 - 70.0%

39.0% 27.5 - 30.0%

14.0% 0.0 - 20.0%

2017

47.1%

47.7%

5.2%

2016

55.4%

33.0%

11.6%

Pension

(millions of Canadian dollars)
December 31, 2017
Cash and cash equivalents
Equity securities
Canada
United States
Global

Fixed income securities

Government
Corporate

Infrastructure and real estate4
Forward currency contracts
Total pension plan assets at fair

value

December 31, 2016
Cash and cash equivalents
Equity securities
United States
Canada
Global

Fixed income securities

Government
Corporate

Infrastructure and real estate4
Forward currency contracts
Total pension plan assets at fair

value

OPEB

(millions of Canadian dollars)
December 31, 2017

Cash and cash equivalents
Equity securities
United States
Global

Fixed income securities

Government

Total OPEB plan assets at fair 

value

December 31, 2016

Cash and cash equivalents
Equity securities
United States
Global

Fixed income securities

Government

Total OPEB plan assets at fair 

value

Level 11

Level 22

Level 33

Total

Level 11

Level 22

Level 33

Total

Canada

United States

169

842
427
189

933
301
—
—

2,861

156

219
425
165

351
277
—
—

—

425
—
—

—
3
—
(10)

418

—

—
—
140

—
3
—
2

1,593

145

—

—
—
—

—
—
340
—

340

—

—
—
—

—
—
281
—

281

169

1,267
427
189

933
304
340
(10)

3,619

156

219
425
305

351
280
281
2

2,019

2

—
343
122

—
522
—
—

989

3

54
—
116

—
116
—
—

289

—

—
—
52

—
1
—
(1)

52

—

—
—
30

—
—
—
2

32

—

—
—
—

—
—
56
—

56

—

—
—
—

—
—
40
—

40

2

—
343
174

—
523
56
(1)

1,097

3

54
—
146

—
116
40
2

361

Level 11

Level 22

Level 33

Total

Level 11

Level 22

Level 33

Total

Canada

United States

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

1

80
36

96

213

1

35
34

45

115

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

—

—
—

—

—

1

80
36

96

213

1

35
34

45

115

1  Level 1 assets include assets with quoted prices in active markets for identical assets.
2  Level 2 assets include assets with significant observable inputs.
3  Level 3 assets include assets with significant unobservable inputs.
4  The fair values of the infrastructure and real estate investments are established through the use of valuation models.

186

187

 
 
 
Changes in the net fair value of plan assets classified as Level 3 in the fair value hierarchy were as 
follows:

27.  RELATED PARTY TRANSACTIONS 

December 31,
(millions of Canadian dollars)
Balance at beginning of year
Unrealized and realized gains
Purchases and settlements, net
Balance at end of year

Canada

2017

2016

United States
2017

2016

281
26
33
340

248
20
13
281

40
5
11
56

49
2
(11)
40

EXPECTED BENEFIT PAYMENTS AND EMPLOYER CONTRIBUTIONS

Year ended December 31,
(millions of Canadian dollars)
Pension

Canada
United States

OPEB

Canada
United States

2018

2019

2020

2021

2022

2023-2027

TRANSPORTATION AGREEMENTS

158
82

12
25

165
81

12
25

172
85

13
25

180
83

13
25

187
92

14
24

1,036
453

43
110

In 2018, we expect to contribute approximately $126 million and $36 million to the Canadian and United 
States pension plans, respectively, and $12 million and $7 million to the Canadian and United States 
OPEB plans, respectively.

RETIREMENT SAVINGS PLANS
In addition to the retirement plans discussed above, we also have defined contribution employee savings 
plans available to both Canadian and United States employees. Employees may participate in a matching 
contribution where we match a certain percentage of before-tax employee contributions of up to 5.0% of 
eligible pay per pay period for Canadian employees and up to 6.0% of eligible pay per pay period for 
United States employees. For the years ended December 31, 2017, 2016 and 2015, we expensed pre-tax 
employer matching contributions of $14 million, nil and nil for Canadian employees and $31 million, $13 
million and $15 million for United States employees, respectively.

26.  CHANGES IN OPERATING ASSETS AND LIABILITIES 

Year ended December 31,
(millions of Canadian dollars)
Restricted Cash
Accounts receivable and other
Accounts receivable from affiliates
Inventory
Deferred amounts and other assets
Accounts payable and other
Accounts payable to affiliates
Interest payable
Other long-term liabilities

2017

2016

2015

15
(783)
24
(289)
(138)
286
(62)
124
509
(314)

—
(437)
(7)
(371)
(183)
396
71
20
153
(358)

—
698
82
(315)
364
(1,472)
(26)
31
(7)
(645)

Related party transactions are conducted in the normal course of business and unless otherwise noted, 

are measured at the exchange amount, which is the amount of consideration established and agreed to 

by the related parties.

SERVICE AGREEMENTS

Vector Pipeline L.P. (Vector), a joint venture, contracts our services to operate the pipeline. Amounts for 

these services, which are charged at cost in accordance with service agreements, were $14 million for 

the year ended December 31, 2017 and $7 million for each of the years ended December 31, 2016 and 

2015.

Certain wholly-owned subsidiaries within the Liquids Pipelines, Gas Transmission and Midstream, Gas 

Distribution and Energy Services segments have committed and uncommitted transportation 

arrangements with several joint venture affiliates that are accounted for using the equity method. Total 

amounts charged to us for transportation services for the years ended December 31, 2017, 2016 and 

2015 were $417 million, $357 million and $332 million, respectively. 

LEASE AGREEMENTS 

A wholly-owned subsidiary within the Liquids Pipelines segment has a lease arrangement with a joint 

venture affiliate. During the years ended December 31, 2017, 2016 and 2015, expenses related to the 

lease arrangement totaled $304 million, $287 million and $151 million, respectively, and were recorded to 

Operating and administrative expense in the Consolidated Statements of Earnings.

AFFILIATE REVENUES AND PURCHASES

Certain wholly-owned subsidiaries within the Gas Distribution and Energy Services segments made 

natural gas and NGL purchases of $142 million, $98 million and $228 million from several joint venture 

affiliates during the years ended December 31, 2017, 2016 and 2015, respectively.

Natural gas sales of $60 million, $49 million and $5 million were made by certain wholly-owned 

subsidiaries within the Energy Services segment to several joint venture affiliates during the years ended 

December 31, 2017, 2016 and 2015, respectively.

DCP Midstream processes certain of our pipeline customers' gas to meet gas quality specifications in 

order to be transported on our system. DCP Midstream processes the gas and sells the NGLs that are 

extracted from the gas. A portion of the proceeds from those sales are retained by DCP Midstream and 

the balance is remitted to us. We received proceeds of $47 million (US$36 million) during the year ended 

December 31, 2017 from DCP Midstream related to those sales.

In addition to the above, we recorded other revenues from DCP Midstream and its affiliates related to the 

transportation and storage of natural gas of $4 million (US$3 million) during the year ended December 31, 

2017.

In the ordinary course of business, we are reimbursed by joint venture partners for operating and 

maintenance expenses for certain projects. We received reimbursements from Spectra Energy joint 

ventures of $10 million (US$8 million) during the year ended December 31, 2017.

RECOVERIES OF COSTS

We provide certain administrative and other services to certain operating entities acquired through the 

Merger Transaction, and recorded recoveries of costs from these affiliates of $88 million (US$68 million) 

for the year ended December 31, 2017. Cost recoveries are recorded as a reduction to Operating and 

administrative expense in the Consolidated Statements of Earnings.

188

189

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EXPECTED BENEFIT PAYMENTS AND EMPLOYER CONTRIBUTIONS

2018

2019

2020

2021

2022

2023-2027

Canada

United States

2017

2016

2017

2016

281

26

33

340

172

85

13

25

248

20

13

281

180

83

13

25

40

5

11

56

49

2

(11)

40

187

92

14

24

1,036

453

43

110

158

82

12

25

165

81

12

25

In 2018, we expect to contribute approximately $126 million and $36 million to the Canadian and United 

States pension plans, respectively, and $12 million and $7 million to the Canadian and United States 

In addition to the retirement plans discussed above, we also have defined contribution employee savings 

plans available to both Canadian and United States employees. Employees may participate in a matching 

contribution where we match a certain percentage of before-tax employee contributions of up to 5.0% of 

eligible pay per pay period for Canadian employees and up to 6.0% of eligible pay per pay period for 

United States employees. For the years ended December 31, 2017, 2016 and 2015, we expensed pre-tax 

employer matching contributions of $14 million, nil and nil for Canadian employees and $31 million, $13 

million and $15 million for United States employees, respectively.

26.  CHANGES IN OPERATING ASSETS AND LIABILITIES 

follows:

December 31,

(millions of Canadian dollars)

Balance at beginning of year

Unrealized and realized gains

Purchases and settlements, net

Balance at end of year

Year ended December 31,

(millions of Canadian dollars)

Pension

Canada

OPEB

Canada

United States

United States

OPEB plans, respectively.

RETIREMENT SAVINGS PLANS

Year ended December 31,

(millions of Canadian dollars)

Restricted Cash

Accounts receivable and other

Accounts receivable from affiliates

Inventory

Deferred amounts and other assets

Accounts payable and other

Accounts payable to affiliates

Interest payable

Other long-term liabilities

2017

2016

2015

(783)

15

24

(289)

(138)

286

(62)

124

509

(314)

—

(437)

(7)

(371)

(183)

396

71

20

153

(358)

—

698

82

(315)

364

(1,472)

(26)

31

(7)

(645)

Changes in the net fair value of plan assets classified as Level 3 in the fair value hierarchy were as 

27.  RELATED PARTY TRANSACTIONS 

Related party transactions are conducted in the normal course of business and unless otherwise noted, 
are measured at the exchange amount, which is the amount of consideration established and agreed to 
by the related parties.

SERVICE AGREEMENTS
Vector Pipeline L.P. (Vector), a joint venture, contracts our services to operate the pipeline. Amounts for 
these services, which are charged at cost in accordance with service agreements, were $14 million for 
the year ended December 31, 2017 and $7 million for each of the years ended December 31, 2016 and 
2015.

TRANSPORTATION AGREEMENTS
Certain wholly-owned subsidiaries within the Liquids Pipelines, Gas Transmission and Midstream, Gas 
Distribution and Energy Services segments have committed and uncommitted transportation 
arrangements with several joint venture affiliates that are accounted for using the equity method. Total 
amounts charged to us for transportation services for the years ended December 31, 2017, 2016 and 
2015 were $417 million, $357 million and $332 million, respectively. 

LEASE AGREEMENTS 
A wholly-owned subsidiary within the Liquids Pipelines segment has a lease arrangement with a joint 
venture affiliate. During the years ended December 31, 2017, 2016 and 2015, expenses related to the 
lease arrangement totaled $304 million, $287 million and $151 million, respectively, and were recorded to 
Operating and administrative expense in the Consolidated Statements of Earnings.

AFFILIATE REVENUES AND PURCHASES
Certain wholly-owned subsidiaries within the Gas Distribution and Energy Services segments made 
natural gas and NGL purchases of $142 million, $98 million and $228 million from several joint venture 
affiliates during the years ended December 31, 2017, 2016 and 2015, respectively.

Natural gas sales of $60 million, $49 million and $5 million were made by certain wholly-owned 
subsidiaries within the Energy Services segment to several joint venture affiliates during the years ended 
December 31, 2017, 2016 and 2015, respectively.

DCP Midstream processes certain of our pipeline customers' gas to meet gas quality specifications in 
order to be transported on our system. DCP Midstream processes the gas and sells the NGLs that are 
extracted from the gas. A portion of the proceeds from those sales are retained by DCP Midstream and 
the balance is remitted to us. We received proceeds of $47 million (US$36 million) during the year ended 
December 31, 2017 from DCP Midstream related to those sales.

In addition to the above, we recorded other revenues from DCP Midstream and its affiliates related to the 
transportation and storage of natural gas of $4 million (US$3 million) during the year ended December 31, 
2017.

In the ordinary course of business, we are reimbursed by joint venture partners for operating and 
maintenance expenses for certain projects. We received reimbursements from Spectra Energy joint 
ventures of $10 million (US$8 million) during the year ended December 31, 2017.

RECOVERIES OF COSTS
We provide certain administrative and other services to certain operating entities acquired through the 
Merger Transaction, and recorded recoveries of costs from these affiliates of $88 million (US$68 million) 
for the year ended December 31, 2017. Cost recoveries are recorded as a reduction to Operating and 
administrative expense in the Consolidated Statements of Earnings.

188

189

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
LONG-TERM NOTES RECEIVABLE FROM AFFILIATES
As at December 31, 2017, amounts receivable from affiliates include a series of loans to Vector and other 
affiliates totaling $109 million and $167 million, respectively ($130 million and $140 million, respectively 
as at December 31, 2016), which require quarterly interest payments at annual interest rates ranging from 
4% to 12%. These amounts are included in Deferred amounts and other assets in the Consolidated 
Statements of Financial position.

28.  COMMITMENTS AND CONTINGENCIES 

COMMITMENTS
At December 31, 2017, we have commitments as detailed below.

Less
than
1 year

Total

2 years

3 years

4 years

5 years Thereafter

62,927
42,083

2,831
2,485

6,273
2,298

6,722
2,117

2,505
1,941

8,839
1,853

35,757
31,389

(millions of Canadian dollars)
Annual debt maturities1,2 
Interest obligations2,3
Purchase of services, pipe 

and other materials, 
including transportation4,5

Operating leases
Capital leases
Maintenance agreements
Land lease commitments
Total
1  Includes debentures, term notes, commercial paper and credit facility draws based on the facility's maturity date and excludes 
short-term borrowings, debt discount, debt issue costs and capital lease obligations. We have the ability under certain debt 
facilities to call and repay the obligations prior to scheduled maturities. Therefore, the actual timing of future cash repayments 
could be materially different than presented above. 

4,144
91
9
38
15
9,613

2,455
86
8
32
16
11,168

14,396
746
35
322
405
120,914

1,163
78
2
15
16
11,966

1,496
80
2
17
16
10,450

1,255
74
2
15
16
5,808

3,883
337
12
205
326
71,909

2  Excludes the debt issuance of US$800 million senior notes that occurred subsequent to December 31, 2017 (Note 30). 
3  Includes debentures and term notes bearing interest at fixed, floating and fixed-to-floating rates. 
4  Includes capital and operating commitments.
5  Consists primarily of gas transportation and storage contracts (EGD), firm capacity payments and gas purchase commitments 

(Spectra Energy), transportation, service and product purchase obligations (MEP), and power commitments (EEP).

Total rental expense for operating leases included in Operating and administrative expense were $118 million, 
$85 million and $72 million for the years ended December 31, 2017, 2016 and 2015, respectively.

ENVIRONMENTAL 
We are subject to various federal, state and local laws relating to the protection of the environment. These 
laws and regulations can change from time to time, imposing new obligations on us. 

Environmental risk is inherent to liquid hydrocarbon and natural gas pipeline operations, and Enbridge 
and our affiliates are, at times, subject to environmental remediation at various contaminated sites. We 
manage this environmental risk through appropriate environmental policies and practices to minimize any 
impact our operations may have on the environment. To the extent that we are unable to recover payment 
for environmental liabilities from insurance or other potentially responsible parties, we will be responsible 
for payment of liabilities arising from environmental incidents associated with the operating activities of 
our liquids and natural gas businesses. 

190

191

Lakehead System Lines 6A and 6B Crude Oil Releases

Line 6B Crude Oil Release

On July 26, 2010, a release of crude oil on Line 6B of EEP’s Lakehead System was reported near 

Marshall, Michigan. Further, on September 9, 2010, a release of crude oil from Line 6A of EEP’s 

Lakehead System was reported in an industrial area of Romeoville, Illinois.

As at December 31, 2017, EEP’s total cost estimate for the Line 6B crude oil release remains at US$1.2 

billion ($195 million after-tax attributable to us) including those costs that were considered probable and 

that could be reasonably estimated as at December 31, 2017. As at December 31, 2017, EEP's 

remaining estimated liability is approximately US$62 million.

Insurance

EEP is included in the comprehensive insurance program that is maintained by Enbridge for its 

subsidiaries and affiliates. As at December 31, 2017, EEP has recorded total insurance recoveries of    

US$547 million ($80 million after-tax attributable to us) for the Line 6B crude oil release out of the US

$650 million applicable limit. Of the remaining US$103 million coverage limit, US$85 million was the 

subject matter of a lawsuit against one particular insurer. In March 2015, we reached an agreement with 

that insurer to submit the US$85 million claim to binding arbitration. On May 2, 2017, the arbitration panel 

issued a decision that was not favorable to us. As a result, EEP will not receive any additional insurance 

recoveries in connection with the Line 6B crude oil release.

Legal and Regulatory Proceedings

A number of United States governmental agencies and regulators initiated investigations into the Line 6B 

crude oil release. As at December 31, 2017, there are no claims pending against Enbridge, EEP or their 

affiliates in United States state courts in connection with the Line 6B crude oil release. 

We have accrued a provision for future legal costs and probable losses associated with the Line 6B crude 

oil release as described above in this note.

Line 6B Fines and Penalties

As at December 31, 2017, EEP’s total estimated costs related to the Line 6B crude oil release include US

$69 million in paid fines and penalties, which includes fines and penalties paid to the United States 

Department of Justice (DOJ) as discussed below. 

Consent Decree

On May 23, 2017, the United States District Court for the Western District of Michigan, Southern Division, 

approved the Consent Decree. The Consent Decree is EEP’s signed settlement agreement with the 

United States Environmental Protection Agency (EPA) and the DOJ regarding the Lines 6A and 6B crude 

oil releases. On June 15, 2017, we made a total payment of US$68 million as required by the Consent 

Decree, which reflects US$61 million for the civil penalty for the Line 6B release, US$1 million for the Line 

6A release, and US$6 million for past removal costs and interest.

AUX SABLE 

Notice of Violation 

In September 2014, Aux Sable US received a Notice and Finding of Violation (NFOV) from the United 

States EPA for alleged violations of the Clean Air Act related to the Leak Detection and Repair program, 

and related provisions of the Clean Air Act permit for Aux Sable’s Channahon, Illinois facility. As part of the 

ongoing process of responding to the September 2014 NFOV, Aux Sable discovered what it believed to 

be an exceedance of currently permitted limits for Volatile Organic Material. In April 2015, a second NFOV 

from the EPA was received in connection with this potential exceedance. Aux Sable engaged in 

discussions with the EPA to evaluate the impacts and ultimate resolution of these issues, including with 

respect to a draft Consent Decree, and those discussions are continuing. The Consent Decree, when 

finalized, is not expected to have a material impact. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
LONG-TERM NOTES RECEIVABLE FROM AFFILIATES

As at December 31, 2017, amounts receivable from affiliates include a series of loans to Vector and other 

affiliates totaling $109 million and $167 million, respectively ($130 million and $140 million, respectively 

as at December 31, 2016), which require quarterly interest payments at annual interest rates ranging from 

4% to 12%. These amounts are included in Deferred amounts and other assets in the Consolidated 

Statements of Financial position.

28.  COMMITMENTS AND CONTINGENCIES 

COMMITMENTS

At December 31, 2017, we have commitments as detailed below.

(millions of Canadian dollars)

Annual debt maturities1,2 

Interest obligations2,3

Purchase of services, pipe 

and other materials, 

including transportation4,5

Operating leases

Capital leases

Maintenance agreements

Land lease commitments

Less

than

1 year

Total

2 years

3 years

4 years

5 years Thereafter

62,927

42,083

2,831

2,485

6,273

2,298

6,722

2,117

2,505

1,941

8,839

1,853

35,757

31,389

14,396

4,144

2,455

1,496

1,255

1,163

3,883

746

35

322

405

91

9

38

15

86

8

32

16

80

2

17

16

74

2

15

16

78

2

15

16

337

12

205

326

Total

120,914

9,613

11,168

10,450

5,808

11,966

71,909

1  Includes debentures, term notes, commercial paper and credit facility draws based on the facility's maturity date and excludes 

short-term borrowings, debt discount, debt issue costs and capital lease obligations. We have the ability under certain debt 

facilities to call and repay the obligations prior to scheduled maturities. Therefore, the actual timing of future cash repayments 

could be materially different than presented above. 

2  Excludes the debt issuance of US$800 million senior notes that occurred subsequent to December 31, 2017 (Note 30). 

3  Includes debentures and term notes bearing interest at fixed, floating and fixed-to-floating rates. 

4  Includes capital and operating commitments.

5  Consists primarily of gas transportation and storage contracts (EGD), firm capacity payments and gas purchase commitments 

(Spectra Energy), transportation, service and product purchase obligations (MEP), and power commitments (EEP).

Total rental expense for operating leases included in Operating and administrative expense were $118 million, 

$85 million and $72 million for the years ended December 31, 2017, 2016 and 2015, respectively.

ENVIRONMENTAL 

We are subject to various federal, state and local laws relating to the protection of the environment. These 

laws and regulations can change from time to time, imposing new obligations on us. 

Environmental risk is inherent to liquid hydrocarbon and natural gas pipeline operations, and Enbridge 

and our affiliates are, at times, subject to environmental remediation at various contaminated sites. We 

manage this environmental risk through appropriate environmental policies and practices to minimize any 

impact our operations may have on the environment. To the extent that we are unable to recover payment 

for environmental liabilities from insurance or other potentially responsible parties, we will be responsible 

for payment of liabilities arising from environmental incidents associated with the operating activities of 

our liquids and natural gas businesses. 

Lakehead System Lines 6A and 6B Crude Oil Releases
Line 6B Crude Oil Release
On July 26, 2010, a release of crude oil on Line 6B of EEP’s Lakehead System was reported near 
Marshall, Michigan. Further, on September 9, 2010, a release of crude oil from Line 6A of EEP’s 
Lakehead System was reported in an industrial area of Romeoville, Illinois.

As at December 31, 2017, EEP’s total cost estimate for the Line 6B crude oil release remains at US$1.2 
billion ($195 million after-tax attributable to us) including those costs that were considered probable and 
that could be reasonably estimated as at December 31, 2017. As at December 31, 2017, EEP's 
remaining estimated liability is approximately US$62 million.

Insurance
EEP is included in the comprehensive insurance program that is maintained by Enbridge for its 
subsidiaries and affiliates. As at December 31, 2017, EEP has recorded total insurance recoveries of    
US$547 million ($80 million after-tax attributable to us) for the Line 6B crude oil release out of the US
$650 million applicable limit. Of the remaining US$103 million coverage limit, US$85 million was the 
subject matter of a lawsuit against one particular insurer. In March 2015, we reached an agreement with 
that insurer to submit the US$85 million claim to binding arbitration. On May 2, 2017, the arbitration panel 
issued a decision that was not favorable to us. As a result, EEP will not receive any additional insurance 
recoveries in connection with the Line 6B crude oil release.

Legal and Regulatory Proceedings
A number of United States governmental agencies and regulators initiated investigations into the Line 6B 
crude oil release. As at December 31, 2017, there are no claims pending against Enbridge, EEP or their 
affiliates in United States state courts in connection with the Line 6B crude oil release. 

We have accrued a provision for future legal costs and probable losses associated with the Line 6B crude 
oil release as described above in this note.

Line 6B Fines and Penalties
As at December 31, 2017, EEP’s total estimated costs related to the Line 6B crude oil release include US
$69 million in paid fines and penalties, which includes fines and penalties paid to the United States 
Department of Justice (DOJ) as discussed below. 

Consent Decree
On May 23, 2017, the United States District Court for the Western District of Michigan, Southern Division, 
approved the Consent Decree. The Consent Decree is EEP’s signed settlement agreement with the 
United States Environmental Protection Agency (EPA) and the DOJ regarding the Lines 6A and 6B crude 
oil releases. On June 15, 2017, we made a total payment of US$68 million as required by the Consent 
Decree, which reflects US$61 million for the civil penalty for the Line 6B release, US$1 million for the Line 
6A release, and US$6 million for past removal costs and interest.

AUX SABLE 
Notice of Violation 
In September 2014, Aux Sable US received a Notice and Finding of Violation (NFOV) from the United 
States EPA for alleged violations of the Clean Air Act related to the Leak Detection and Repair program, 
and related provisions of the Clean Air Act permit for Aux Sable’s Channahon, Illinois facility. As part of the 
ongoing process of responding to the September 2014 NFOV, Aux Sable discovered what it believed to 
be an exceedance of currently permitted limits for Volatile Organic Material. In April 2015, a second NFOV 
from the EPA was received in connection with this potential exceedance. Aux Sable engaged in 
discussions with the EPA to evaluate the impacts and ultimate resolution of these issues, including with 
respect to a draft Consent Decree, and those discussions are continuing. The Consent Decree, when 
finalized, is not expected to have a material impact. 

190

191

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
On October 14, 2016, an amended claim was filed against Aux Sable by a counterparty to an NGL supply 
agreement. On January 5, 2017, Aux Sable filed a Statement of Defence with respect to this claim. While 
the final outcome of this action cannot be predicted with certainty, at this time management believes that 
the ultimate resolution of this action will not have a material impact on the our consolidated financial 
position or results of operations.

TAX MATTERS
We maintain tax liabilities related to uncertain tax positions. While fully supportable in our view, these tax 
positions, if challenged by tax authorities, may not be fully sustained on review.

OTHER LITIGATION
We are subject to various other legal and regulatory actions and proceedings which arise in the normal 
course of business, including interventions in regulatory proceedings and challenges to regulatory 
approvals and permits by special interest groups. While the final outcome of such actions and 
proceedings cannot be predicted with certainty, management believes that the resolution of such actions 
and proceedings will not have a material impact on our consolidated financial position or results of 
operations.

29.  GUARANTEES 

In the normal course of conducting business, we enter into agreements which indemnify third parties and 
affiliates. Examples include indemnifying counterparties pursuant to sale agreements for assets or 
businesses in matters such as breaches of representations, warranties or covenants, loss or damages to 
property, environmental liabilities, changes in laws, valuation differences, and litigation and contingent 
liabilities. We may indemnify the purchaser for certain tax liabilities incurred while we owned the assets or 
for a misrepresentation related to taxes that result in a loss to the purchaser. Similarly, we may indemnify 
the purchaser of assets for certain tax liabilities related to those assets.

As discussed below, these contracts include financial guarantees, stand-by letters of credit, debt 
guarantees, surety bonds and indemnifications. We enter into these arrangements to facilitate commercial 
transactions with third parties by enhancing the value of the transactions to the third parties. To varying 
degrees, these guarantees involve elements of performance and credit risk, which are not included on our 
Consolidated Statements of Financial Position. The possibility of having to perform under these 
guarantees and indemnifications is largely dependent upon future operations of various subsidiaries, 
investees and other third parties, or the occurrence of certain future events.

We cannot reasonably estimate the maximum potential amounts that could become payable to third 
parties and affiliates under these agreements; however, historically, we have not made any significant 
payments under indemnification provisions. While these agreements may specify a maximum potential 
exposure, or a specified duration to the indemnification obligation, there are circumstances where the 
amount and duration are unlimited. The indemnifications and guarantees have not had, and are not 
reasonably likely to have, a material effect on our financial condition, changes in financial condition, 
earnings, liquidity, capital expenditures or capital resources.

We have agreed to indemnify EEP from and against substantially all liabilities, including liabilities relating 
to environmental matters, arising from operations prior to the transfer of our pipeline operations to EEP in 
1991. This indemnification does not apply to amounts that EEP would be able to recover in its tariff rates 
if not recovered through insurance or to any liabilities relating to a change in laws after December 27, 
1991.

We have also agreed to indemnify EEM for any tax liability related to EEM’s formation, management of 
EEP and ownership of i-units of EEP. We have not made any significant payment under these tax 
indemnifications. We do not believe there is a material exposure at this time.

We have agreed to indemnify the Fund Group for certain liabilities relating to environmental matters 

arising from operations prior to the transfer of certain assets and interests to the Fund Group in 2012 and 

prior to the transfer of certain assets and interests to the Fund Group as part of the Canadian 

Restructuring Plan. We have also agreed to pay defined payments to the Fund Group on their investment 

in Southern Lights Pipeline in the event shippers do not elect to extend their current contracts post 

June 2025.

In connection with Spectra Energy's spin-off from Duke Energy in 2007, certain guarantees that were 

previously issued by Spectra Energy were assigned to, or replaced by, Duke Energy as guarantor in 

2006. For any remaining guarantees of other Duke Energy obligations, Duke Energy has indemnified 

Spectra Energy against any losses incurred under these guarantee arrangements. The maximum 

potential amount of future payments we could have been required to make under these performance 

guarantees as at December 31, 2017 was approximately US$406 million, which has been indemnified by 

Duke Energy as discussed above. One of these outstanding performance guarantees, which has a 

maximum potential future payment of US$201 million, expires in 2028. The remaining guarantees have 

no contractual expirations.

Spectra Energy has also issued joint and several guarantees to some of the Duke/Fluor Daniel (D/FD) 

project owners, guaranteeing the performance of D/FD under its engineering, procurement and 

construction contracts and other contractual commitments in place at the time of Spectra Energy's spin-

off from Duke Energy. D/FD is one of the entities transferred to Duke Energy in connection with Spectra 

Energy's spin-off. Substantially all of these guarantees have no contractual expiration and no stated 

maximum amount of future payments that we could be required to make. Fluor Enterprises Inc., 

as 50% owner in D/FD, issued similar joint and several guarantees to the same D/FD project owners.

In connection with Spectra Energy's 50% ownership in DCP Midstream, Spectra Energy has agreed to 

guarantee their portion of the obligations of the joint venture under a US$424 million term loan agreement 

of which US$350 million is outstanding as at December 31, 2017. If DCP Midstream fails to meet its 

obligations under the credit agreement, Spectra Energy's maximum potential total future payments to 

lenders under the guarantee based on the amounts outstanding as at December 31, 2017 would be US

$175 million. The guarantee will terminate upon the payment of all obligations under the credit agreement, 

which expires in December 2019.

SEP has issued performance guarantees to a third party and an affiliate on behalf of an equity method 

investee. These guarantees were issued to enable the equity method investee to enter into long-term 

transportation contracts with the third party. While the likelihood is remote, the maximum potential amount 

of future payments that could be required to be made as at December 31, 2017 is US$90 million. These 

performance guarantees expire in 2032.

Westcoast Energy Inc., a 100%-owned subsidiary, has issued performance guarantees to third parties 

guaranteeing the performance of unconsolidated entities, such as equity method investees, and of 

entities previously sold by Westcoast Energy Inc. to third parties. Those guarantees require Westcoast 

Energy Inc. to make payment to the guaranteed third party upon the failure of such unconsolidated or 

sold entity to make payment under some of its contractual obligations, such as debt agreements, 

purchase contracts and leases.

192

193

 
 
 
 
On October 14, 2016, an amended claim was filed against Aux Sable by a counterparty to an NGL supply 

agreement. On January 5, 2017, Aux Sable filed a Statement of Defence with respect to this claim. While 

the final outcome of this action cannot be predicted with certainty, at this time management believes that 

the ultimate resolution of this action will not have a material impact on the our consolidated financial 

position or results of operations.

TAX MATTERS

We maintain tax liabilities related to uncertain tax positions. While fully supportable in our view, these tax 

positions, if challenged by tax authorities, may not be fully sustained on review.

OTHER LITIGATION

We are subject to various other legal and regulatory actions and proceedings which arise in the normal 

course of business, including interventions in regulatory proceedings and challenges to regulatory 

approvals and permits by special interest groups. While the final outcome of such actions and 

proceedings cannot be predicted with certainty, management believes that the resolution of such actions 

and proceedings will not have a material impact on our consolidated financial position or results of 

operations.

29.  GUARANTEES 

In the normal course of conducting business, we enter into agreements which indemnify third parties and 

affiliates. Examples include indemnifying counterparties pursuant to sale agreements for assets or 

businesses in matters such as breaches of representations, warranties or covenants, loss or damages to 

property, environmental liabilities, changes in laws, valuation differences, and litigation and contingent 

liabilities. We may indemnify the purchaser for certain tax liabilities incurred while we owned the assets or 

for a misrepresentation related to taxes that result in a loss to the purchaser. Similarly, we may indemnify 

the purchaser of assets for certain tax liabilities related to those assets.

As discussed below, these contracts include financial guarantees, stand-by letters of credit, debt 

guarantees, surety bonds and indemnifications. We enter into these arrangements to facilitate commercial 

transactions with third parties by enhancing the value of the transactions to the third parties. To varying 

degrees, these guarantees involve elements of performance and credit risk, which are not included on our 

Consolidated Statements of Financial Position. The possibility of having to perform under these 

guarantees and indemnifications is largely dependent upon future operations of various subsidiaries, 

investees and other third parties, or the occurrence of certain future events.

We cannot reasonably estimate the maximum potential amounts that could become payable to third 

parties and affiliates under these agreements; however, historically, we have not made any significant 

payments under indemnification provisions. While these agreements may specify a maximum potential 

exposure, or a specified duration to the indemnification obligation, there are circumstances where the 

amount and duration are unlimited. The indemnifications and guarantees have not had, and are not 

reasonably likely to have, a material effect on our financial condition, changes in financial condition, 

earnings, liquidity, capital expenditures or capital resources.

We have agreed to indemnify EEP from and against substantially all liabilities, including liabilities relating 

to environmental matters, arising from operations prior to the transfer of our pipeline operations to EEP in 

1991. This indemnification does not apply to amounts that EEP would be able to recover in its tariff rates 

if not recovered through insurance or to any liabilities relating to a change in laws after December 27, 

1991.

We have also agreed to indemnify EEM for any tax liability related to EEM’s formation, management of 

EEP and ownership of i-units of EEP. We have not made any significant payment under these tax 

indemnifications. We do not believe there is a material exposure at this time.

We have agreed to indemnify the Fund Group for certain liabilities relating to environmental matters 
arising from operations prior to the transfer of certain assets and interests to the Fund Group in 2012 and 
prior to the transfer of certain assets and interests to the Fund Group as part of the Canadian 
Restructuring Plan. We have also agreed to pay defined payments to the Fund Group on their investment 
in Southern Lights Pipeline in the event shippers do not elect to extend their current contracts post 
June 2025.

In connection with Spectra Energy's spin-off from Duke Energy in 2007, certain guarantees that were 
previously issued by Spectra Energy were assigned to, or replaced by, Duke Energy as guarantor in 
2006. For any remaining guarantees of other Duke Energy obligations, Duke Energy has indemnified 
Spectra Energy against any losses incurred under these guarantee arrangements. The maximum 
potential amount of future payments we could have been required to make under these performance 
guarantees as at December 31, 2017 was approximately US$406 million, which has been indemnified by 
Duke Energy as discussed above. One of these outstanding performance guarantees, which has a 
maximum potential future payment of US$201 million, expires in 2028. The remaining guarantees have 
no contractual expirations.

Spectra Energy has also issued joint and several guarantees to some of the Duke/Fluor Daniel (D/FD) 
project owners, guaranteeing the performance of D/FD under its engineering, procurement and 
construction contracts and other contractual commitments in place at the time of Spectra Energy's spin-
off from Duke Energy. D/FD is one of the entities transferred to Duke Energy in connection with Spectra 
Energy's spin-off. Substantially all of these guarantees have no contractual expiration and no stated 
maximum amount of future payments that we could be required to make. Fluor Enterprises Inc., 
as 50% owner in D/FD, issued similar joint and several guarantees to the same D/FD project owners.

In connection with Spectra Energy's 50% ownership in DCP Midstream, Spectra Energy has agreed to 
guarantee their portion of the obligations of the joint venture under a US$424 million term loan agreement 
of which US$350 million is outstanding as at December 31, 2017. If DCP Midstream fails to meet its 
obligations under the credit agreement, Spectra Energy's maximum potential total future payments to 
lenders under the guarantee based on the amounts outstanding as at December 31, 2017 would be US
$175 million. The guarantee will terminate upon the payment of all obligations under the credit agreement, 
which expires in December 2019.

SEP has issued performance guarantees to a third party and an affiliate on behalf of an equity method 
investee. These guarantees were issued to enable the equity method investee to enter into long-term 
transportation contracts with the third party. While the likelihood is remote, the maximum potential amount 
of future payments that could be required to be made as at December 31, 2017 is US$90 million. These 
performance guarantees expire in 2032.

Westcoast Energy Inc., a 100%-owned subsidiary, has issued performance guarantees to third parties 
guaranteeing the performance of unconsolidated entities, such as equity method investees, and of 
entities previously sold by Westcoast Energy Inc. to third parties. Those guarantees require Westcoast 
Energy Inc. to make payment to the guaranteed third party upon the failure of such unconsolidated or 
sold entity to make payment under some of its contractual obligations, such as debt agreements, 
purchase contracts and leases.

192

193

 
 
 
 
30.  SUBSEQUENT EVENTS 

On January 9, 2018, Texas Eastern Transmission, LP, a wholly-owned operating subsidiary of SEP, 
completed an offering of US$800 million of senior notes, which consisted of two US$400 million tranches 
with fixed interest rates of 3.50% and 4.15% which mature in 2028 and 2048, respectively.  

None.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON 

ACCOUNTING AND FINANCIAL DISCLOSURE

On January 22, 2018, Enbridge and SEP announced the execution of a definitive agreement, resulting in 
us converting all of our incentive distribution rights (IDRs) and general partner economic interests in SEP 
into 172.5 million newly issued SEP common units. As part of the transaction, all of the IDRs have been 
eliminated. We now hold a non-economic general partner interest in SEP and own approximately 403 
million of SEP common units, representing approximately 83% of SEP's outstanding common units. 

31.  QUARTERLY FINANCIAL DATA 

(unaudited; millions of Canadian dollars, except per
share amounts)
20171
Operating revenues
Operating income/(loss)
Earnings
Earnings attributable to controlling interests
Earnings attributable to common 

shareholders

Earnings per common share

Basic
Diluted

2016
Operating revenues
Operating income/(loss)
Earnings/(loss)
Earnings/(loss) attributable to controlling

interests

Earnings/(loss) attributable to common

shareholders

Earnings/(loss) per common share

Basic
Diluted

Q1

Q2

Q3

Q4

Total

11,146
1,358
945
721

11,116
1,684
1,241
1,000

638

0.54
0.54

8,795
1,674
1,347

1,286

1,213

1.38
1.38

919

0.56
0.56

7,939
794
352

372

301

0.33
0.33

9,227
1,490
1,015
847

765

0.47
0.47

8,488
(216)
(237)

(30)

(103)

(0.11)
(0.11)

12,889
(2,961)
65
291

44,378
1,571
3,266
2,859

207

2,529

0.13
0.12

9,338
329
847

441

365

0.39
0.39

1.66
1.65

34,560
2,581
2,309

2,069

1,776

1.95
1.93

1  The 2017 quarterly financial data reflects the effect of the Merger Transaction closed on February 27, 2017 (Note 7).

ITEM 9A. CONTROLS AND PROCEDURES

DISCLOSURE CONTROLS AND PROCEDURES

Disclosure controls and procedures are designed to provide reasonable assurance that information 

required to be disclosed in reports filed with, or submitted to, securities regulatory authorities is recorded, 

processed, summarized and reported within the time periods specified under Canadian and United States 

securities law. As at December 31, 2017, an evaluation was carried out under the supervision of and with 

the participation of our management, including the Chief Executive Officer and Chief Financial Officer, of 

the effectiveness of the design and operations of our disclosure controls and procedures (as defined in 

Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934). Based on that evaluation, the 

Chief Executive Officer and Chief Financial Officer concluded that the design and operation of these 

disclosure controls and procedures were effective in ensuring that information required to be disclosed by 

us in reports that we file with or submits to the Securities and Exchange Commission (SEC) and the 

Canadian Securities Administrators is recorded, processed, summarized and reported within the time 

periods required.

INTERNAL CONTROL OVER FINANCIAL REPORTING

Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial 

reporting as such term is defined in the rules of the SEC and the Canadian Securities Administrators. Our 

internal control over financial reporting is a process designed under the supervision and with the 

participation of executive and financial officers to provide reasonable assurance regarding the reliability of 

financial reporting and the preparation of our financial statements for external reporting purposes in 

accordance with U.S. GAAP.

Our internal control over financial reporting includes policies and procedures that:

pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect 

transactions and dispositions of our assets;

provide reasonable assurance that transactions are recorded as necessary to permit preparation 

of financial statements in accordance with U.S. GAAP; and

provide reasonable assurance regarding prevention or timely detection of unauthorized 

acquisition, use or disposition of our assets that could have a material effect on the financial 

• 

• 

• 

statements.

Our internal control over financial reporting may not prevent or detect all misstatements because of 

inherent limitations. Additionally, projections of any evaluation of effectiveness to future periods are 

subject to the risk that controls may become inadequate because of changes in conditions or 

deterioration in the degree of compliance with our policies and procedures.

Our management assessed the effectiveness of our internal control over financial reporting as at 

December 31, 2017, based on the framework established in Internal Control – Integrated Framework 

(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on 

this assessment, our management concluded that we maintained effective internal control over financial 

reporting as at December 31, 2017.

The effectiveness of our internal control over financial reporting as at December 31, 2017 has been 

audited by PricewaterhouseCoopers LLP, independent auditors appointed by our shareholders. As stated 

in their attestation report which appears in Item 8. Financial Statements and Supplementary Data, they 

194

195

 
 
 
 
30.  SUBSEQUENT EVENTS 

On January 9, 2018, Texas Eastern Transmission, LP, a wholly-owned operating subsidiary of SEP, 

completed an offering of US$800 million of senior notes, which consisted of two US$400 million tranches 

with fixed interest rates of 3.50% and 4.15% which mature in 2028 and 2048, respectively.  

On January 22, 2018, Enbridge and SEP announced the execution of a definitive agreement, resulting in 

us converting all of our incentive distribution rights (IDRs) and general partner economic interests in SEP 

into 172.5 million newly issued SEP common units. As part of the transaction, all of the IDRs have been 

eliminated. We now hold a non-economic general partner interest in SEP and own approximately 403 

million of SEP common units, representing approximately 83% of SEP's outstanding common units. 

31.  QUARTERLY FINANCIAL DATA 

(unaudited; millions of Canadian dollars, except per

share amounts)

20171

Operating revenues

Operating income/(loss)

Earnings

Earnings attributable to controlling interests

Earnings attributable to common 

shareholders

Earnings per common share

Basic

Diluted

2016

Operating revenues

Operating income/(loss)

Earnings/(loss)

Earnings/(loss) attributable to controlling

Earnings/(loss) attributable to common

Earnings/(loss) per common share

interests

shareholders

Basic

Diluted

Q1

Q2

Q3

Q4

Total

11,146

1,358

945

721

638

0.54

0.54

8,795

1,674

1,347

1,286

1,213

1.38

1.38

11,116

1,684

1,241

1,000

7,939

919

0.56

0.56

794

352

372

301

0.33

0.33

9,227

1,490

1,015

847

765

0.47

0.47

8,488

(216)

(237)

(30)

(103)

(0.11)

(0.11)

12,889

(2,961)

9,338

65

291

207

0.13

0.12

329

847

441

365

0.39

0.39

44,378

1,571

3,266

2,859

2,529

1.66

1.65

34,560

2,581

2,309

2,069

1,776

1.95

1.93

1  The 2017 quarterly financial data reflects the effect of the Merger Transaction closed on February 27, 2017 (Note 7).

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON 
ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

DISCLOSURE CONTROLS AND PROCEDURES
Disclosure controls and procedures are designed to provide reasonable assurance that information 
required to be disclosed in reports filed with, or submitted to, securities regulatory authorities is recorded, 
processed, summarized and reported within the time periods specified under Canadian and United States 
securities law. As at December 31, 2017, an evaluation was carried out under the supervision of and with 
the participation of our management, including the Chief Executive Officer and Chief Financial Officer, of 
the effectiveness of the design and operations of our disclosure controls and procedures (as defined in 
Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934). Based on that evaluation, the 
Chief Executive Officer and Chief Financial Officer concluded that the design and operation of these 
disclosure controls and procedures were effective in ensuring that information required to be disclosed by 
us in reports that we file with or submits to the Securities and Exchange Commission (SEC) and the 
Canadian Securities Administrators is recorded, processed, summarized and reported within the time 
periods required.

INTERNAL CONTROL OVER FINANCIAL REPORTING
Management’s Annual Report on Internal Control over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over financial 
reporting as such term is defined in the rules of the SEC and the Canadian Securities Administrators. Our 
internal control over financial reporting is a process designed under the supervision and with the 
participation of executive and financial officers to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of our financial statements for external reporting purposes in 
accordance with U.S. GAAP.

Our internal control over financial reporting includes policies and procedures that:

• 

• 

• 

pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect 
transactions and dispositions of our assets;
provide reasonable assurance that transactions are recorded as necessary to permit preparation 
of financial statements in accordance with U.S. GAAP; and
provide reasonable assurance regarding prevention or timely detection of unauthorized 
acquisition, use or disposition of our assets that could have a material effect on the financial 
statements.

Our internal control over financial reporting may not prevent or detect all misstatements because of 
inherent limitations. Additionally, projections of any evaluation of effectiveness to future periods are 
subject to the risk that controls may become inadequate because of changes in conditions or 
deterioration in the degree of compliance with our policies and procedures.

Our management assessed the effectiveness of our internal control over financial reporting as at 
December 31, 2017, based on the framework established in Internal Control – Integrated Framework 
(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on 
this assessment, our management concluded that we maintained effective internal control over financial 
reporting as at December 31, 2017.

The effectiveness of our internal control over financial reporting as at December 31, 2017 has been 
audited by PricewaterhouseCoopers LLP, independent auditors appointed by our shareholders. As stated 
in their attestation report which appears in Item 8. Financial Statements and Supplementary Data, they 

194

195

 
 
 
 
expressed an unqualified opinion on the effectiveness of our internal control over financial reporting as of 
December 31, 2017.

Changes in Internal Control Over Financial Reporting
During the three months ended December 31, 2017, there has been no material change in our internal 
control over financial reporting.

ITEM 9B. OTHER INFORMATION

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Consolidated Financial Statements, Supplemental Financial Data and Supplemental Schedules 

included in Part II of this annual report are as follows:

Item 5.02.  Departure of Directors or Certain Officers; Election of Directors; Appointment of 

Certain Officers; Compensatory Arrangements of Certain Officers

Enbridge Inc.:

Report of Independent Registered Public Accounting Firm

Consolidated Statements of Earnings

Consolidated Statements of Comprehensive Income

Consolidated Statements of Changes in Equity

Consolidated Statements of Cash Flows

Consolidated Statements of Financial Position

Notes to the Consolidated Financial Statements

All schedules are omitted because they are not required or because the required information is included 

in the Consolidated Financial Statements or Notes.

(b) Exhibits:

incorporated into this Item.

Reference is made to the “Index of Exhibits” following Item 16. Form 10-K Summary, which is hereby 

On February 13, 2018, Rebecca B. Roberts notified us that she would not stand for re-election as a 
director of Enbridge at our 2018 Annual Meeting of Shareholders to be held on May 9, 2018. Ms. Roberts 
has served on our Board since March 2015, prior to which she was a director of Enbridge Energy 
Company, Inc. and Enbridge Energy Management, L.L.C. Ms. Roberts will continue to serve on our Board 
through to the end of her term on May 9, 2018 and her decision not to stand for re-election was based on 
the demands on her time from other professional commitments, and not the result of any disagreement 
relating to our operations, policies or practices.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE 
GOVERNANCE

Reference to "Executive Officers" is included in Part I. Item 1. Business of this report. Other information in 
response to this item, including information on our directors, is incorporated by reference from our Proxy 
Statement to be filed with the SEC relating to our 2018 annual meeting of shareholders.

ITEM 11. EXECUTIVE COMPENSATION

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 
the SEC relating to our 2018 annual meeting of shareholders.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND 
MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 
the SEC relating to our 2018 annual meeting of shareholders.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND 
DIRECTOR INDEPENDENCE

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 
the SEC relating to our 2018 annual meeting of shareholders.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 
the SEC relating to our 2018 annual meeting of shareholders.

196

197

 
 
 
 
 
 
 
expressed an unqualified opinion on the effectiveness of our internal control over financial reporting as of 

December 31, 2017.

Changes in Internal Control Over Financial Reporting

During the three months ended December 31, 2017, there has been no material change in our internal 

control over financial reporting.

ITEM 9B. OTHER INFORMATION

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Consolidated Financial Statements, Supplemental Financial Data and Supplemental Schedules 
included in Part II of this annual report are as follows:

Item 5.02.  Departure of Directors or Certain Officers; Election of Directors; Appointment of 

Certain Officers; Compensatory Arrangements of Certain Officers

Enbridge Inc.:

Report of Independent Registered Public Accounting Firm
Consolidated Statements of Earnings
Consolidated Statements of Comprehensive Income
Consolidated Statements of Changes in Equity
Consolidated Statements of Cash Flows
Consolidated Statements of Financial Position
Notes to the Consolidated Financial Statements

All schedules are omitted because they are not required or because the required information is included 
in the Consolidated Financial Statements or Notes.

(b) Exhibits:

Reference is made to the “Index of Exhibits” following Item 16. Form 10-K Summary, which is hereby 
incorporated into this Item.

On February 13, 2018, Rebecca B. Roberts notified us that she would not stand for re-election as a 

director of Enbridge at our 2018 Annual Meeting of Shareholders to be held on May 9, 2018. Ms. Roberts 

has served on our Board since March 2015, prior to which she was a director of Enbridge Energy 

Company, Inc. and Enbridge Energy Management, L.L.C. Ms. Roberts will continue to serve on our Board 

through to the end of her term on May 9, 2018 and her decision not to stand for re-election was based on 

the demands on her time from other professional commitments, and not the result of any disagreement 

relating to our operations, policies or practices.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE 

GOVERNANCE

Reference to "Executive Officers" is included in Part I. Item 1. Business of this report. Other information in 

response to this item, including information on our directors, is incorporated by reference from our Proxy 

Statement to be filed with the SEC relating to our 2018 annual meeting of shareholders.

ITEM 11. EXECUTIVE COMPENSATION

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 

the SEC relating to our 2018 annual meeting of shareholders.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND 

MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 

the SEC relating to our 2018 annual meeting of shareholders.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND 

DIRECTOR INDEPENDENCE

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 

the SEC relating to our 2018 annual meeting of shareholders.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

Information in response to this item is incorporated by reference from our Proxy Statement to be filed with 

the SEC relating to our 2018 annual meeting of shareholders.

196

197

 
 
 
 
 
 
 
ITEM 16. FORM 10-K SUMMARY

None.

INDEX OF EXHIBITS

Each exhibit identified below is included as a part of this annual report. Exhibits included in this filing are 
designated by an asterisk (“*”); all exhibits not so designated are incorporated by reference to a prior filing 
as indicated. Exhibits designated with a “+” constitute a management contract or compensatory plan 
arrangement.

Exhibit No. Name of Exhibit

2.1 Agreement and Plan of Merger, dated as of September 5, 2016, by and among 

Spectra Energy Corp, Enbridge Inc. and Sand Merger Sub, Inc. (incorporated by 
reference to Exhibit 2.1 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

2.2 Contribution Agreement dated as of June 18, 2015 among Enbridge Inc., IPL 

System Inc., Enbridge Income Fund Holdings Inc., Enbridge Income Fund, 
Enbridge Commercial Trust and Enbridge Income Partners LP (incorporated by 
reference to Exhibit 2.1 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.1 Articles of Continuance of the Corporation, dated December 15, 1987 

(incorporated by reference to Exhibit 2.1(a) to Enbridge’s Registration Statement 
on Form S-8 filed May 7, 2001)

3.2 Certificate of Amendment, dated August 2, 1989, to the Articles of the 
Corporation (incorporated by reference to Exhibit 2.1(b) to Enbridge’s 
Registration Statement on Form S-8 filed May 7, 2001)

3.3 Articles of Amendment of the Corporation, dated April 30, 1992 (incorporated by 
reference to Exhibit 2.1(c) to Enbridge’s Registration Statement on Form S-8 
filed May 7, 2001)

3.4 Articles of Amendment of the Corporation, dated July 2, 1992 (incorporated by 

reference to Exhibit 2.1(d) to Enbridge’s Registration Statement on Form S-8 
filed May 7, 2001)

3.5 Articles of Amendment of the Corporation, dated August 6, 1992 (incorporated 

by reference to Exhibit 2.1(e) to Enbridge’s Registration Statement on Form S-8 
filed May 7, 2001)

3.6 Articles of Arrangement of the Corporation dated December 18, 1992, attaching 

the Arrangement Agreement, dated December 15, 1992 (incorporated by 

reference to Exhibit 2.1(f) to Enbridge’s Registration Statement on Form S-8 

filed May 7, 2001)

3.7 Certificate of Amendment of the Corporation (notarial certified copy), dated 

December 18, 1992 (incorporated by reference to Exhibit 2.1(g) to Enbridge’s 

Registration Statement on Form S-8 filed May 7, 2001)

3.8 Articles of Amendment of the Corporation, dated May 5, 1994 (incorporated by 

reference to Exhibit 2.1(h) to Enbridge’s Registration Statement on Form S-8 

filed May 7, 2001)

3.9 Certificate of Amendment, dated October 7, 1998 (incorporated by reference to 

Exhibit 2.1(i) to Enbridge’s Registration Statement on Form S-8 filed May 7, 

2001)

2001)

2001)

2005)

3.10 Certificate of Amendment, dated November 24, 1998 (incorporated by reference 

to Exhibit 2.1(j) to Enbridge’s Registration Statement on Form S-8 filed May 7, 

3.11 Certificate of Amendment, dated April 29, 1999 (incorporated by reference to 

Exhibit 2.1(k) to Enbridge’s Registration Statement on Form S-8 filed May 7, 

3.12 Certificate of Amendment, dated May 5, 2005 (incorporated by reference to 

Exhibit 2.1(l) to Enbridge’s Registration Statement on Form S-8 filed August 5, 

3.13 Certificate of Amendment, dated May 11, 2011 (incorporated by reference to 

Exhibit 3.13 to Enbridge’s Registration Statement on Form F-4 filed September 

23, 2017)

3.14 Certificate of Amendment, dated September 28, 2011 (incorporated by reference 

to Exhibit 3.14 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.15 Certificate of Amendment, dated November 21, 2011 (incorporated by reference 

to Exhibit 3.15 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.16 Certificate of Amendment, dated January 16, 2012 (incorporated by reference to 

Exhibit 3.16 to Enbridge’s Registration Statement on Form F-4 filed September 

23, 2017)

198

199

ITEM 16. FORM 10-K SUMMARY

INDEX OF EXHIBITS

None.

arrangement.

Exhibit No. Name of Exhibit

2.1 Agreement and Plan of Merger, dated as of September 5, 2016, by and among 

Spectra Energy Corp, Enbridge Inc. and Sand Merger Sub, Inc. (incorporated by 

reference to Exhibit 2.1 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

2.2 Contribution Agreement dated as of June 18, 2015 among Enbridge Inc., IPL 

System Inc., Enbridge Income Fund Holdings Inc., Enbridge Income Fund, 

Enbridge Commercial Trust and Enbridge Income Partners LP (incorporated by 

reference to Exhibit 2.1 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.1 Articles of Continuance of the Corporation, dated December 15, 1987 

(incorporated by reference to Exhibit 2.1(a) to Enbridge’s Registration Statement 

on Form S-8 filed May 7, 2001)

3.2 Certificate of Amendment, dated August 2, 1989, to the Articles of the 

Corporation (incorporated by reference to Exhibit 2.1(b) to Enbridge’s 

Registration Statement on Form S-8 filed May 7, 2001)

3.3 Articles of Amendment of the Corporation, dated April 30, 1992 (incorporated by 

reference to Exhibit 2.1(c) to Enbridge’s Registration Statement on Form S-8 

filed May 7, 2001)

3.4 Articles of Amendment of the Corporation, dated July 2, 1992 (incorporated by 

reference to Exhibit 2.1(d) to Enbridge’s Registration Statement on Form S-8 

filed May 7, 2001)

3.5 Articles of Amendment of the Corporation, dated August 6, 1992 (incorporated 

by reference to Exhibit 2.1(e) to Enbridge’s Registration Statement on Form S-8 

filed May 7, 2001)

Each exhibit identified below is included as a part of this annual report. Exhibits included in this filing are 

designated by an asterisk (“*”); all exhibits not so designated are incorporated by reference to a prior filing 

as indicated. Exhibits designated with a “+” constitute a management contract or compensatory plan 

3.7 Certificate of Amendment of the Corporation (notarial certified copy), dated 

December 18, 1992 (incorporated by reference to Exhibit 2.1(g) to Enbridge’s 
Registration Statement on Form S-8 filed May 7, 2001)

3.6 Articles of Arrangement of the Corporation dated December 18, 1992, attaching 
the Arrangement Agreement, dated December 15, 1992 (incorporated by 
reference to Exhibit 2.1(f) to Enbridge’s Registration Statement on Form S-8 
filed May 7, 2001)

3.8 Articles of Amendment of the Corporation, dated May 5, 1994 (incorporated by 

reference to Exhibit 2.1(h) to Enbridge’s Registration Statement on Form S-8 
filed May 7, 2001)

3.9 Certificate of Amendment, dated October 7, 1998 (incorporated by reference to 
Exhibit 2.1(i) to Enbridge’s Registration Statement on Form S-8 filed May 7, 
2001)

3.10 Certificate of Amendment, dated November 24, 1998 (incorporated by reference 

to Exhibit 2.1(j) to Enbridge’s Registration Statement on Form S-8 filed May 7, 
2001)

3.11 Certificate of Amendment, dated April 29, 1999 (incorporated by reference to 
Exhibit 2.1(k) to Enbridge’s Registration Statement on Form S-8 filed May 7, 
2001)

3.12 Certificate of Amendment, dated May 5, 2005 (incorporated by reference to 

Exhibit 2.1(l) to Enbridge’s Registration Statement on Form S-8 filed August 5, 
2005)

3.13 Certificate of Amendment, dated May 11, 2011 (incorporated by reference to 

Exhibit 3.13 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.14 Certificate of Amendment, dated September 28, 2011 (incorporated by reference 

to Exhibit 3.14 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.15 Certificate of Amendment, dated November 21, 2011 (incorporated by reference 

to Exhibit 3.15 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.16 Certificate of Amendment, dated January 16, 2012 (incorporated by reference to 

Exhibit 3.16 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

198

199

3.17 Certificate of Amendment, dated March 27, 2012 (incorporated by reference to 
Exhibit 3.17 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.18 Certificate of Amendment, dated April 16, 2012 (incorporated by reference to 

Exhibit 3.18 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.19 Certificate of Amendment, dated May 17, 2012 (incorporated by reference to 

Exhibit 3.19 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.20 Certificate of Amendment, dated July 12, 2012 (incorporated by reference to 

Exhibit 3.20 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.21 Certificate of Amendment, dated September 11, 2012 (incorporated by reference 

to Exhibit 3.21 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.22 Certificate of Amendment, dated December 3, 2012 (incorporated by reference 

to Exhibit 3.22 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.23 Certificate of Amendment, dated March 25, 2013 (incorporated by reference to 
Exhibit 3.23 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.24 Certificate of Amendment, dated June 4, 2013 (incorporated by reference to 

Exhibit 3.24 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.25 Certificate of Amendment, dated September 25, 2013 (incorporated by reference 

to Exhibit 3.25 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.26 Certificate of Amendment, dated December 10, 2013 (incorporated by reference 

to Exhibit 3.26 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.27 Certificate of Amendment, dated March 10, 2014 (incorporated by reference to 
Exhibit 3.27 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.28 Certificate of Amendment, dated May 20, 2014 (incorporated by reference to 

Exhibit 3.28 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.29 Certificate of Amendment, dated July 15, 2014 (incorporated by reference to 

Exhibit 3.29 to Enbridge’s Registration Statement on Form F-4 filed September 
23, 2017)

3.30 Certificate of Amendment, dated September 19, 2014 (incorporated by reference 

to Exhibit 3.30 to Enbridge’s Registration Statement on Form F-4 filed 
September 23, 2017)

3.31 Certificate of Amendment, dated November 22, 2016 (incorporated by reference 

to Enbridge’s Report of Foreign Issuer on Form 6-K filed December 1, 2016)

3.32 Certificate of Amendment, dated December 15, 2016 (incorporated by reference 

to Enbridge’s Report of Foreign Issuer on Form 6-K filed December 16, 2016)

3.33 Certificate of Amendment, dated July 13, 2017 (incorporated by reference to 

Enbridge’s Report of Foreign Issuer on Form 6-K filed July 13, 2017)

3.34 Certificate of Amendment, dated September 25, 2017

3.35 Certificate of Amendment, dated December 7, 2017

3.36 Amended and Restated General By-Law No. 1 of Enbridge Inc. (incorporated by 

reference to Enbridge’s Report of Foreign Issuer on Form 6-K filed February 27, 

2017)

3.37 By-Law No. 2 of Enbridge Inc. (incorporated by reference to Enbridge’s Current 

Report on Form 6-K filed December 5, 2014)

4.1 Form of Indenture between Enbridge Inc. and Deutsche Bank Trust Company 

Americas to be dated February 25, 2005 (incorporated by reference to Exhibit 

7.3 to Enbridge’s Registration Statement on Form F-10 filed February 4, 2005)

4.2 First Supplemental Indenture between Enbridge Inc. and Deutsche Bank Trust 

Company Americas, dated March 1, 2012 (incorporated by reference to Exhibit 

7.3 to Enbridge’s Registration Statement on Form F-10 filed May 11, 2012)

4.3 Second Supplemental Indenture between Enbridge Inc. and Deutsche Bank 

Trust Company Americas, dated December 19, 2016 (incorporated by reference 

to Enbridge’s Report of Foreign Issuer on Form 6-K filed December 20, 2016)

4.4 Third Supplemental Indenture between Enbridge Inc. and Deutsche Bank Trust 

Company Americas, dated July 14, 2017 (incorporated by reference to 

Enbridge’s Report of Foreign Issuer on Form 6-K filed July 14, 2017)

4.5 Shareholder Rights Plan Agreement dated as of November 9, 1995 and 

amended and restated as of May 1, 1996, February  24, 1999, May 3, 2002, 

May 5, 2005, May 7, 2008, May 11, 2011, May 7, 2014 and May 11, 2017 

between Enbridge Inc. and CST Trust Company (incorporated by reference to 

Enbridge’s Report of Foreign Issuer on Form 6-K filed May 12, 2017)

Certain instruments defining the rights of holders of long-term debt securities of 

the Registrant and its subsidiaries are omitted pursuant to Item 601(b)(4)(iii) of 

Regulation S-K. The Registrant hereby undertakes to furnish to the SEC, upon 

request, copies of any such instruments.

10.1 Enbridge Pipelines Inc. Competitive Toll Settlement Dated July 1, 2011 

10.2 Form of Executive Employment Agreement (pre-2014)

10.3 Form of Executive Employment Agreement (2014-2016)

10.4 Form of Executive Employment Agreement (2017)

10.5 Enbridge Inc. Performance Stock Option Plan (2007) (Canadian)

10.6 Enbridge Inc. Performance Stock Option Plan (2007), as amended and restated 

(2011) 

*

*

*

*+

*+

*+

*+

*+

200

201

23, 2017)

23, 2017)

23, 2017)

23, 2017)

23, 2017)

23, 2017)

23, 2017)

23, 2017)

23, 2017)

3.18 Certificate of Amendment, dated April 16, 2012 (incorporated by reference to 

Exhibit 3.18 to Enbridge’s Registration Statement on Form F-4 filed September 

3.19 Certificate of Amendment, dated May 17, 2012 (incorporated by reference to 

Exhibit 3.19 to Enbridge’s Registration Statement on Form F-4 filed September 

3.20 Certificate of Amendment, dated July 12, 2012 (incorporated by reference to 

Exhibit 3.20 to Enbridge’s Registration Statement on Form F-4 filed September 

3.21 Certificate of Amendment, dated September 11, 2012 (incorporated by reference 

to Exhibit 3.21 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.22 Certificate of Amendment, dated December 3, 2012 (incorporated by reference 

to Exhibit 3.22 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.23 Certificate of Amendment, dated March 25, 2013 (incorporated by reference to 

Exhibit 3.23 to Enbridge’s Registration Statement on Form F-4 filed September 

3.24 Certificate of Amendment, dated June 4, 2013 (incorporated by reference to 

Exhibit 3.24 to Enbridge’s Registration Statement on Form F-4 filed September 

3.25 Certificate of Amendment, dated September 25, 2013 (incorporated by reference 

to Exhibit 3.25 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.26 Certificate of Amendment, dated December 10, 2013 (incorporated by reference 

to Exhibit 3.26 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.27 Certificate of Amendment, dated March 10, 2014 (incorporated by reference to 

Exhibit 3.27 to Enbridge’s Registration Statement on Form F-4 filed September 

3.28 Certificate of Amendment, dated May 20, 2014 (incorporated by reference to 

Exhibit 3.28 to Enbridge’s Registration Statement on Form F-4 filed September 

3.29 Certificate of Amendment, dated July 15, 2014 (incorporated by reference to 

Exhibit 3.29 to Enbridge’s Registration Statement on Form F-4 filed September 

3.30 Certificate of Amendment, dated September 19, 2014 (incorporated by reference 

to Exhibit 3.30 to Enbridge’s Registration Statement on Form F-4 filed 

September 23, 2017)

3.17 Certificate of Amendment, dated March 27, 2012 (incorporated by reference to 

Exhibit 3.17 to Enbridge’s Registration Statement on Form F-4 filed September 

3.31 Certificate of Amendment, dated November 22, 2016 (incorporated by reference 
to Enbridge’s Report of Foreign Issuer on Form 6-K filed December 1, 2016)

3.32 Certificate of Amendment, dated December 15, 2016 (incorporated by reference 

to Enbridge’s Report of Foreign Issuer on Form 6-K filed December 16, 2016)

3.33 Certificate of Amendment, dated July 13, 2017 (incorporated by reference to 

Enbridge’s Report of Foreign Issuer on Form 6-K filed July 13, 2017)

3.34 Certificate of Amendment, dated September 25, 2017

3.35 Certificate of Amendment, dated December 7, 2017

3.36 Amended and Restated General By-Law No. 1 of Enbridge Inc. (incorporated by 
reference to Enbridge’s Report of Foreign Issuer on Form 6-K filed February 27, 
2017)

3.37 By-Law No. 2 of Enbridge Inc. (incorporated by reference to Enbridge’s Current 

Report on Form 6-K filed December 5, 2014)

4.1 Form of Indenture between Enbridge Inc. and Deutsche Bank Trust Company 
Americas to be dated February 25, 2005 (incorporated by reference to Exhibit 
7.3 to Enbridge’s Registration Statement on Form F-10 filed February 4, 2005)

4.2 First Supplemental Indenture between Enbridge Inc. and Deutsche Bank Trust 
Company Americas, dated March 1, 2012 (incorporated by reference to Exhibit 
7.3 to Enbridge’s Registration Statement on Form F-10 filed May 11, 2012)

4.3 Second Supplemental Indenture between Enbridge Inc. and Deutsche Bank 

Trust Company Americas, dated December 19, 2016 (incorporated by reference 
to Enbridge’s Report of Foreign Issuer on Form 6-K filed December 20, 2016)

4.4 Third Supplemental Indenture between Enbridge Inc. and Deutsche Bank Trust 

Company Americas, dated July 14, 2017 (incorporated by reference to 
Enbridge’s Report of Foreign Issuer on Form 6-K filed July 14, 2017)

4.5 Shareholder Rights Plan Agreement dated as of November 9, 1995 and 

amended and restated as of May 1, 1996, February  24, 1999, May 3, 2002, 
May 5, 2005, May 7, 2008, May 11, 2011, May 7, 2014 and May 11, 2017 
between Enbridge Inc. and CST Trust Company (incorporated by reference to 
Enbridge’s Report of Foreign Issuer on Form 6-K filed May 12, 2017)

Certain instruments defining the rights of holders of long-term debt securities of 
the Registrant and its subsidiaries are omitted pursuant to Item 601(b)(4)(iii) of 
Regulation S-K. The Registrant hereby undertakes to furnish to the SEC, upon 
request, copies of any such instruments.

10.1 Enbridge Pipelines Inc. Competitive Toll Settlement Dated July 1, 2011 

10.2 Form of Executive Employment Agreement (pre-2014)

10.3 Form of Executive Employment Agreement (2014-2016)

10.4 Form of Executive Employment Agreement (2017)
10.5 Enbridge Inc. Performance Stock Option Plan (2007) (Canadian)

10.6 Enbridge Inc. Performance Stock Option Plan (2007), as amended and restated 

(2011) 

*

*

*

*+

*+

*+

*+

*+

200

201

*+

*+

*+

*+

*+

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*+

*+

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*+

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*+

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*+

*+

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*+

*+

10.7 Enbridge Inc. Performance Stock Option Plan (2007), as amended and restated 

(2011) and as further amended (2012)

10.8 Enbridge Inc. Performance Stock Option Plan (2007), as amended and restated 

(2011) and as further amended (2012 and 2014)

10.9 Enbridge Inc. Performance Stock Unit Plan (2007, revised effective November 

2014)

10.10 Enbridge Inc. Performance Stock Unit Plan (2007), as revised

10.11 Enbridge Inc. Restricted Stock Unit Plan (2006), as revised

10.12 Enbridge Inc. Incentive Stock Option Plan (2007)

10.13 Enbridge Inc. Incentive Stock Option Plan (2007), as amended and restated 

(2011)

10.14 Enbridge Inc. Incentive Stock Option Plan (2007), as amended and restated 

(2011 and 2014)

10.15 Enbridge Inc. Incentive Stock Option Plan (2017), as revised

10.16 Enbridge Inc. Directors’ Compensation Plan, November 3, 2015, effective 

January 1, 2016

10.17 Enbridge Inc. Short Term Incentive Plan (2007), as revised

10.18 The Enbridge Supplemental Pension Plan, As Amended and Restated Effective 

January 1, 2005

10.19 Amendment No. 1 and Amendment No. 2 to The Enbridge Supplemental 
Pension Plan, As Amended and Restated Effective January 1, 2005

10.20 Enbridge Supplemental Pension Plan for United States Employees (As 

Amended and Restated Effective January 1, 2005)

10.21 Amendment 1 and Amendment 2 to the Enbridge Supplemental Pension Plan for 
United States Employees (As Amended and Restated Effective January 1, 2005)

10.22 Spectra Energy Corp Directors’ Savings Plan, as amended and restated

10.23 Spectra Energy Corp Executive Savings Plan, as amended and restated

10.24 Spectra Energy Executive Cash Balance Plan, as amended and restated

10.25 Omnibus Amendment, dated June 20, 2014, to Spectra Energy Corp Executive 
Savings Plan, Spectra Energy Corp Executive Cash Balance Plan and Spectra 
Energy Corp 2007 Long-Term Incentive Plan

10.26 Form of Spectra Energy Corp Change in Control Agreement (As Amended and 

Restated)

10.27 Form of Spectra Energy Corp Phantom Stock Award Agreement (2015) pursuant 

to the Spectra Energy Corp 2007 Long-Term Incentive Plan

10.28 Form of Spectra Energy Corp Stock Option Agreement (Nonqualified Stock 

Options) (2016) pursuant to the Spectra Energy Corp 2007 Long-Term Incentive 
Plan

10.29 Form of Spectra Energy Corp Performance Share Award Agreement (2016) 
pursuant to the Spectra Energy Corp 2007 Long-Term Incentive Plan

10.30 Form of Spectra Energy Corp Phantom Stock Award Agreement (2016) pursuant 
to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Cash-settled)

10.31 Form of Spectra Energy Corp Phantom Stock Award Agreement (2016) pursuant 
to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Stock-settled)

10.32 Spectra Energy Corp 2007 Long-Term Incentive Plan (as amended and 

restated)

10.33 Spectra Energy Corp Executive Short-Term Incentive Plan (as amended and 

restated)

*+

*+

*+

*+

*

*

*

*

*

*

*

*

*

*

*

*

*

10.34 Form of Spectra Energy Corp Phantom Stock Award Agreement (2017) pursuant 

to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Cash-settled)

10.35 Form of Spectra Energy Corp Phantom Stock Award Agreement (2017) pursuant 

to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Stock-settled)

10.36 Second Amendment to the Spectra Energy Corp Executive Savings Plan (As 

Amended and Restated Effective May 1, 2012)

10.37 Second Amendment to the Spectra Energy Corp Executive Cash Balance Plan 

(As Amended and Restated Effective May 1, 2012)

12.1 Computation of Ratio Earnings to Fixed Charges

21.1 Subsidiaries of the Registrant

23.1 Consent of PricewaterhouseCoopers LLP

24.1 Powers of Attorney (included on the signature page of the Annual Report)

31.1 Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2 Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1 Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 

Section 906 of the Sarbanes-Oxley Act of 2002.

32.2 Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 

Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS XBRL Instance Document.

101.SCH XBRL Taxonomy Extension Schema.

101.CAL XBRL Taxonomy Extension Calculation Linkbase.

101.DEF XBRL Taxonomy Extension Definition Linkbase.

101.LAB XBRL Taxonomy Extension Label Linkbase.

101.PRE XBRL Taxonomy Extension Presentation Linkbase.

SIGNATURES

POWER OF ATTORNEY 

Each person whose signature appears below appoints Robert R. Rooney, John K. Whelen and Tyler W. 

Robinson, and each of them, any of whom may act without the joinder of the other, as their true and 

lawful attorneys-in-fact and agents, with full power of substitution, for him or her and in his or her name, 

place and stead, in any and all capacities, to sign any and all amendments to this Annual Report of the 

Company on Form 10-K, and to file the same, with all exhibits thereto, and all other documents in 

connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact 

and agents, and each of them, full power and authority to do and perform each and every act and thing 

requisite and necessary to be done, as fully to all intents and purposes as he or she might or would do in 

person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them or their or 

his or her substitute and substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant 

has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

202

203

 
*+

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(2011)

(2011 and 2014)

January 1, 2016

January 1, 2005

10.7 Enbridge Inc. Performance Stock Option Plan (2007), as amended and restated 

(2011) and as further amended (2012)

10.8 Enbridge Inc. Performance Stock Option Plan (2007), as amended and restated 

(2011) and as further amended (2012 and 2014)

10.9 Enbridge Inc. Performance Stock Unit Plan (2007, revised effective November 

2014)

10.10 Enbridge Inc. Performance Stock Unit Plan (2007), as revised

10.11 Enbridge Inc. Restricted Stock Unit Plan (2006), as revised

10.12 Enbridge Inc. Incentive Stock Option Plan (2007)

10.13 Enbridge Inc. Incentive Stock Option Plan (2007), as amended and restated 

10.14 Enbridge Inc. Incentive Stock Option Plan (2007), as amended and restated 

10.15 Enbridge Inc. Incentive Stock Option Plan (2017), as revised

10.16 Enbridge Inc. Directors’ Compensation Plan, November 3, 2015, effective 

10.17 Enbridge Inc. Short Term Incentive Plan (2007), as revised

10.18 The Enbridge Supplemental Pension Plan, As Amended and Restated Effective 

10.19 Amendment No. 1 and Amendment No. 2 to The Enbridge Supplemental 

Pension Plan, As Amended and Restated Effective January 1, 2005

10.20 Enbridge Supplemental Pension Plan for United States Employees (As 

Amended and Restated Effective January 1, 2005)

10.21 Amendment 1 and Amendment 2 to the Enbridge Supplemental Pension Plan for 

United States Employees (As Amended and Restated Effective January 1, 2005)

10.22 Spectra Energy Corp Directors’ Savings Plan, as amended and restated

10.23 Spectra Energy Corp Executive Savings Plan, as amended and restated

10.24 Spectra Energy Executive Cash Balance Plan, as amended and restated

10.25 Omnibus Amendment, dated June 20, 2014, to Spectra Energy Corp Executive 

Savings Plan, Spectra Energy Corp Executive Cash Balance Plan and Spectra 

Energy Corp 2007 Long-Term Incentive Plan

10.26 Form of Spectra Energy Corp Change in Control Agreement (As Amended and 

10.27 Form of Spectra Energy Corp Phantom Stock Award Agreement (2015) pursuant 

to the Spectra Energy Corp 2007 Long-Term Incentive Plan

10.28 Form of Spectra Energy Corp Stock Option Agreement (Nonqualified Stock 

Options) (2016) pursuant to the Spectra Energy Corp 2007 Long-Term Incentive 

10.29 Form of Spectra Energy Corp Performance Share Award Agreement (2016) 

pursuant to the Spectra Energy Corp 2007 Long-Term Incentive Plan

10.30 Form of Spectra Energy Corp Phantom Stock Award Agreement (2016) pursuant 

to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Cash-settled)

10.31 Form of Spectra Energy Corp Phantom Stock Award Agreement (2016) pursuant 

to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Stock-settled)

10.32 Spectra Energy Corp 2007 Long-Term Incentive Plan (as amended and 

10.33 Spectra Energy Corp Executive Short-Term Incentive Plan (as amended and 

Restated)

Plan

restated)

restated)

*+

*+

*+

*+

*

*

*

*

*

*

*

*

*

*

*

*

*

10.34 Form of Spectra Energy Corp Phantom Stock Award Agreement (2017) pursuant 
to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Cash-settled)

10.35 Form of Spectra Energy Corp Phantom Stock Award Agreement (2017) pursuant 
to the Spectra Energy Corp 2007 Long-Term Incentive Plan (Stock-settled)

10.36 Second Amendment to the Spectra Energy Corp Executive Savings Plan (As 

Amended and Restated Effective May 1, 2012)

10.37 Second Amendment to the Spectra Energy Corp Executive Cash Balance Plan 

(As Amended and Restated Effective May 1, 2012)

12.1 Computation of Ratio Earnings to Fixed Charges

21.1 Subsidiaries of the Registrant

23.1 Consent of PricewaterhouseCoopers LLP

24.1 Powers of Attorney (included on the signature page of the Annual Report)

31.1 Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2 Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1 Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 

Section 906 of the Sarbanes-Oxley Act of 2002.

32.2 Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 

Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS XBRL Instance Document.

101.SCH XBRL Taxonomy Extension Schema.

101.CAL XBRL Taxonomy Extension Calculation Linkbase.

101.DEF XBRL Taxonomy Extension Definition Linkbase.

101.LAB XBRL Taxonomy Extension Label Linkbase.

101.PRE XBRL Taxonomy Extension Presentation Linkbase.

SIGNATURES

POWER OF ATTORNEY 
Each person whose signature appears below appoints Robert R. Rooney, John K. Whelen and Tyler W. 
Robinson, and each of them, any of whom may act without the joinder of the other, as their true and 
lawful attorneys-in-fact and agents, with full power of substitution, for him or her and in his or her name, 
place and stead, in any and all capacities, to sign any and all amendments to this Annual Report of the 
Company on Form 10-K, and to file the same, with all exhibits thereto, and all other documents in 
connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact 
and agents, and each of them, full power and authority to do and perform each and every act and thing 
requisite and necessary to be done, as fully to all intents and purposes as he or she might or would do in 
person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them or their or 
his or her substitute and substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant 
has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

202

203

 
ENBRIDGE INC.
(Registrant)

Date:

February 16, 2018

By:

/s/ Al Monaco

Al Monaco

President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below 
on February 16, 2018 by the following persons on behalf of the registrant and in the capacities indicated.

/s/ Al Monaco

  /s/ John K. Whelen

Al Monaco
President, Chief Executive Officer and Director
(Principal Executive Officer)

John K. Whelen
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)

/s/ Allen C. Capps

Allen C. Capps
Vice President and Chief Accounting Officer
(Principal Accounting Officer)

/s/ Pamela L. Carter

Pamela L. Carter
Director

/s/ Marcel R. Coutu

Marcel R. Coutu
Director

/s/ Charles W. Fischer

Charles W. Fischer
Director

/s/ Michael McShane

Michael McShane
Director

/s/ Rebecca B. Roberts

Rebecca B. Roberts
Director

/s/ Cathy L. Williams

Cathy L. Williams
Director

/s/ Gregory L. Ebel
Gregory L. Ebel
Chairman of the Board of Directors

  /s/ Clarence P. Cazalot, Jr.

Clarence P. Cazalot, Jr.
Director

  /s/ J. Herb England

J. Herb England
Director

  /s/ V. Maureen Kempston Darkes

V. Maureen Kempston Darkes
Director

  /s/ Michael E.J. Phelps

Michael E.J. Phelps
Director

/s/ Dan C. Tutcher

Dan C. Tutcher
Director

204

 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Global 100 Most Sustainable Corporations in 

the World highlights global corporations that have been 

most proactive in managing environmental, social and 

governance issues. In January 2018, Enbridge was named 
to the Global 100 for the ninth straight year, and 12th time 
overall. Enbridge is ranked No. 12 worldwide, up from 
our No. 39 overall ranking in 2017—top among the other 
four Canadian corporations listed and the only Canadian 

energy-sector company to make the grade. 

Safety Report to the Community

Our annual Safety Report to the Community, which outlines 

our progress as we strive for 100 percent safety and 
zero incidents, is available at enbridge.com/safetyreport

Sustainability Report

Enbridge publishes an annual Sustainability Report. 

Our first report for our combined company will be published 
in June 2018 and will be available at enbridge.com/sustainability 

Online Annual Report

You can read our 2017 Annual Report online  
at enbridge.com/ar2017

Enbridge is committed to reducing its impact 

on the environment in every way, including 

the production of this publication. This report 

was printed entirely on FSC® Certified paper  

containing post-consumer waste fiber.

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200, 425 – 1st Street S.W. 
Calgary, Alberta, Canada T2P 3L8

Telephone: 403-231-3900 
Facsimile: 403-231-3920 
Toll free: 800-481-2804

enbridge.com