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AltaGas

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FY2017 Annual Report · AltaGas
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ANNUAL
REPORT
2017

MANAGEMENT'S DISCUSSION AND ANALYSIS 

The  Management's  Discussion  and  Analysis  (MD&A)  of  operations  is  provided  to  enable  readers  to  assess  the  results  of 
operations, liquidity and capital resources of AltaGas Ltd. (AltaGas or the Corporation) as at and for the year ended December 
31, 2017. This MD&A, dated February 28, 2018, should be read in conjunction with the accompanying audited Consolidated 
Financial Statements and notes thereto of AltaGas as at, and for the year ended, December 31, 2017. 

The  Consolidated  Financial  Statements  and  comparative  information  have  been  prepared  in  accordance  with  United  States 
(U.S.) generally accepted accounting principles (U.S. GAAP) and in Canadian dollars, unless otherwise indicated. Throughout 
this MD&A, references to GAAP refer to U.S. GAAP. 

Abbreviations, acronyms and capitalized terms used in this MD&A that are not otherwise defined herein are used consistently 
with the definitions in the Annual Information Form.   

This MD&A contains forward looking information (forward looking statements). Words such  as “may”, “can”, “would”, “could”, 
“should”, “will”, “intend”, “plan”, “anticipate”, “believe”, “aim”, “seek”, “propose”, “contemplate”, “estimate”, “forecast”, “expect”, 
“project”, “target”, “potential”, “objective”, “continue”, “outlook”, “vision”, “opportunity” and similar expressions suggesting future 
events or future performance, as they relate to the Corporation or any affiliate of the Corporation, are intended to identify forward 
looking statements. In particular, this MD&A contains forward looking statements with respect to, among other things, business 
objectives, the anticipated benefits of acquisitions and other major projects, the anticipated timing of commercial  operations, 

investment decisions, expenditures and licensing and permitting, expected growth and drivers of growth, capital expenditures 
(including in respect of the 2018 capital program, expected allocation per business segment and project and anticipated sources 
of financing thereof), results of operations, operational and financial performance, business projects, opportunities and financial 
results.   

Specifically, such forward looking statements are set forth under the headings: “Overview of the Business”, “AltaGas’ Vision and 
Objective”, “Strategy”, “Strategy Execution”, “Developments Relating to the Pending WGL Acquisition”, “2018 Outlook”, “Growth 
Capital”, “Gas”, “Power”, “Utilities” and “Future Changes in Accounting Principles” and under those headings specifically include 

AltaGas’  expectations  of  growth  in  natural  gas  supply  and  demand  for  clean  energy,  prospects  for  growth,  the  potential  for 
growth through acquisition and development of energy infrastructure and the expectation that such growth in infrastructure will 
enable AltaGas to establish a western energy hub in northeast British Columbia providing access to export markets off the west 
coast and access to new markets and higher netbacks to producers in the WCSB; AltaGas’ ability to maximize profitability of its 
assets and to add complementary services to its existing business segments; AltaGas’ belief that investing in low-risk, long-life 
energy assets will generate superior economic returns; AltaGas’ expectations regarding sources of utility like returns and long 
life  cash  flows;  AltaGas’  expectations  regarding  diversification  including  impact  on  earnings  and  cash  flow  and  reduction  in 
exposure to commodity market volatility; expectations that expansion of business through acquisitions and organic growth will 
support dividend and capital growth; AltaGas’ belief that in recent years natural gas supply and demand fundamentals have been 

changing, and consequently there is renewed interest in natural gas an economically priced, clean-burning fuel; expectations 
that AltaGas will acquire or build gas gathering and processing infrastructure from, or on behalf of, producers wishing to redeploy 
capital to exploration and production activities rather than to non-core activities such as midstream services; AltaGas’ potential to 
move  natural  gas  and  NGLs  to  key  markets  including  Asia;  AltaGas’  ability  to  provide  a  fully  integrated  midstream  service 
offering  to  its  customers  across  the  energy  value  chain;  AltaGas’  ability  to  focus  on  developing  and  operating  larger  gas 
infrastructure  projects  and  AltaGas’  cost  of  doing  so;  expectations  regarding  the  decommissioning  of  nuclear  and  coal-fired 
generation  and  expected  timeline  for  decommissioning;  expectations  that  renewable  power  and  natural  gas-fired  power 
generation  will  replace nuclear  and  coal-fired power  generation  and  that  AltaGas  is  in a  position to  take  advantage  of such 
replacement opportunities; expectations for rate base growth in the utilities segment including through the execution of strategic 

utility acquisitions  and  addition  of customers;  expectations as  to  AltaGas’  ability  to  maintain  financial strength and flexibility, 
sufficient liquidity, an investment grade credit rating and ready access to capital markets; AltaGas’ belief that proactively hedging 
foreign exchange rates and commodity price exposure mitigates earnings volatility from commodity price risk and volume risk; 
AltaGas’ belief that it can help meet the growing demand for clean energy, while continuing to deliver sustainable benefits for its 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report1 
 
 
 
 
shareholders;  expectations  with  respect  to  in-house  construction  expertise  and  competitive  advantages  of  such  expertise, 
including the ability to safely deliver capital projects on time and on budget; AltaGas’ belief that it delivers an effective balance 
between  yield  and  growth;  AltaGas’  belief  that  the  growth  prospects  in  each  of  WGL’s  regulated  utility,  midstream  energy 
services and commercial energy system business lines are complementary to AltaGas’ long-term vision; expectations for the 
increased use of natural gas, providing opportunities for AltaGas to invest in and optimize assets; expectations regarding the 

decrease in U.S. demand for import of gas, NGLs and crude oil and impact that has on netbacks for Canadian energy sector; 
AltaGas’ belief that energy market diversification is critical for Canadian producers; expectations regarding the supply of NGL 
and  natural  gas  reserves,  demands  from  Asia  for  such  products  and  opportunities  such  supply  and  demand  presents  for 
investing in infrastructure outside of North America; expectations that AltaGas is uniquely positioned to provide a competitive 
service to producers; AltaGas’ ability to provide multiple outlets for producers to access the highest value markets; expectations 
that  access  to  Asian  markets  provides  diversity  to  producers;  expectations  relating  to  AltaGas’  access  to  Asian  markets, 
including  through  AltaGas’  relationship  with  Idemitsu;  expectations  for  opportunities  arising  from increased  demand in North 
America  for clean  sources of power  and  that  AltaGas  is in a  position  to  take advantage of  such  opportunities;  expectations 

regarding expansion and re-contracting opportunities and that AltaGas is in a position to take advantage of such opportunities; 
AltaGas’ expectation that its greenfield and brownfield development sites throughout California could attract multi-year power 
purchase  agreements;  expectations  that  continued  improvements  to  assets  will  enhance  value  by  positioning  the  assets  to 
operate under a wider variety of environmental conditions; expectations with respect to the expansion of Blythe Energy Center; 
expectations  of  further  development  and  expansion  of  power  assets;  expectations  of  continued  investment  in  high  growth 
jurisdictions; AltaGas’ ability to achieve a balanced mix of energy infrastructure assets and expected time frame to reach such 
balance; expectations regarding the locational benefits of the Blythe facility; expectations for growth in the utilities segment as a 
result  of  expansion  of  and  investment  in  existing  distribution  systems,  acquisition  of  new  franchises,  fuel  switching  and 
development of natural gas storage opportunities; expectations that advancing energy export opportunities will provide higher 

netbacks  to  producers;  expectations  regarding  2018  normalized  EBITDA  (including  expected  contributions  per  business 
segment and sources of generation); projected growth in normalized EBITDA and normalized funds from operations (including 
per business segment and on a combined basis with WGL); expectations with respect to the WGL Acquisition including the 
expected  closing  date,  ability  to  obtain,  and  timeline  for  obtaining,  regulatory  and  other  approvals,  the  aggregate  cash 
consideration  including  the  anticipated  sources  of  financing  thereof  and  anticipated  indebtedness  under  the  bridge  facility, 
planned asset divestitures, anticipated benefits of the WGL Acquisition including the portfolio of assets of the combined entity, 
nature, number, value and timing of growth and investment opportunities available to AltaGas, the quality and growth potential of 
the  assets,  the  strategic  focus  of  the  business,  the  combined  rate  base  and  rate  base  growth,  expectations  to  accelerate 
AltaGas’ growth, the ability of the combined entity to target higher growth markets, high growth franchise areas, and other growth 

markets; expectations for the Cove Point LNG Terminal including anticipated completion timing, the stability of cash flows and of 
AltaGas'  business,  the  growth  potential  available  to  AltaGas  in  the  midstream  business,  capabilities  for  connections  to 
marine-based energy export opportunities, clean energy, natural gas generation and retail energy services, the significance and 
growth potential and expectations for growth in the Montney and Marcellus/Utica formations;  expectations with respect to net 
capital expenditures; expectations with respect to AltaGas’ capital program and funding thereof; AltaGas’ belief that the WCSB 
has changed from a maturing basin to one capable of sustainable long-term growth via new low cost gas formations; AltaGas’ 
belief that market demand, including the demand generated from the LPG and potential LNG export projects on the west coast of 
North America provides significant long-term growth opportunities, and that AltaGas expects to capitalize on these opportunities; 

expectations  with  respect  to  opportunities  to  increase  volumes  by  tying-in  new  wells  and  building  or  purchasing  adjoining 
facilities to create larger processing infrastructure; expectations with respect to the North Pine Facility, Townsend Facility and 
Townsend 2A including, expected earnings and impact on earnings; expectations with respect to the proposed  Ridley Island 
Propane Export Terminal including costs, propane transport capability, locational benefits, initial shipment capacity, connection 
capability,  quality of  transport  options,  sources  of propane supply,  AltaGas'  ability to construct  new  plants  and  develop  new 
projects, expectations regarding tolling arrangements, expectations of being the first propane export terminal off the west coast 
of  British  Columbia,  sale  and  purchase  of  liquefied  petroleum  gas  from  the  terminal,  relations  with  Aboriginal  peoples  and 
Astomos, offtake opportunities, expectations of serving growing demand in Asia and offering new markets to producers and 
timing of construction and commercial operations; expectations that new AltaGas infrastructure is expected to be larger scale 

facilities; expectations with respect to the Alton Natural Gas Storage Project including expected natural gas storage capacity, 
ability  to  increase  reliability  of  gas  supply  to  AltaGas'  distribution  customers  in  the  area,  ability  to  continue  working  in  a 
constructive manner with stakeholders, construction and brining timeline and storage in service date; expectations with respect 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report2  
to access to the CN rail network and transport of propane to the Ridley Island Propane Export Terminal; expectations regarding 
AltaGas' ability to underpin and nature of contract commitments including with respect to term and dedication, AltaGas' ability to 
negotiate  and  execute  definitive  agreements  and  receive  regulatory  approvals,  expected  timeline  for  executing  definitive 
agreements and being on-line, AltaGas' expectation that development of these facilities will broaden AltaGas' customer base 
and  drive  continued  growth  for  AltaGas'  midstream  and  energy  export  strategies;  AltaGas’  belief  that  the  value  of  existing 

gas-fired  facilities  can  be  optimized  through  active  management,  origination  and  additional  technological  and  operational 
enhancements;  expectations  relating  to  the  MCP  including  cost,  construction  and  in-service  date;  cost,  location,  connection 
capability  to  existing  pipelines  and  gas  supply  opportunities;  expectations  that  AltaGas  is  well-positioned  to  fund  its  growth 
capital and to take advantage of growth opportunities as they arise; expectations relating to AltaGas’ ability to fund its projects 
and business; expectations relating to the energy needs of California, including an increasing demand for non-gas resource 
adequacy; the potential for, and timing of, RFPs from western U.S. states; expectations relating to the Pomona Energy Storage 
Facility including AltaGas' ability to operate the facility, potential expansion opportunities, potential size of expansion, expected 
energy  storage  capacity  and  available  resource  adequacy,  battery  run  time,  expectations  regarding  resource  adequacy 

payments  and  AltaGas'  ability  to  earn  additional  revenue  from  energy  from  batteries  and  impact  successful  commercial 
operations  has  on  AltaGas  and  on  earnings;  expectations  relating  to  the  Northwest  Hydro  Facilities  including  expected 
generation  and  contributions  to  earnings  and  seasonality  impacts;  expectations  regarding  gas  processing  volumes  and 
disposition  of  smaller  non-core  assets;  expectations  regarding  the  U.S.  dollar  exchange  rate,  foreign  exchange  forward 
contracts,  commodity  hedge  gains,  and  frac  spread  exposure;  impact  of  facility  turnarounds  on  earnings  and  timing  of 
turnarounds; expected earnings from the utilities segment; AltaGas’ ability to focus on enhancing productivity and streamlining 
businesses; and expectations regarding the adoption of changes in accounting principles and impact on financial statements. 

These statements involve known and unknown risks, uncertainties and other factors that may cause actual results, events and 

achievements to differ materially from those expressed or implied by such statements. Such statements reflect AltaGas' current 
expectations, estimates and projections at the time the statement was made. Material assumptions include: expected commodity 
supply, demand and pricing; volumes and rates; exchange rates; inflation; interest rates; credit rating; regulatory approvals and 
policies;  future  operating  and  capital  costs;  project  completion  dates;  capacity  expectations;  implications  of  recent  U.S.  tax 
legislation changes; the outcomes of significant commercial contract negotiations; financing of the WGL Acquisition; and timing 
and completion of the WGL Acquisition.   

AltaGas’ forward looking statements are subject to certain risks and uncertainties which could cause results or events to differ 
from current expectations, including without limitation: access to and use of capital markets; market value of AltaGas’ securities; 

AltaGas’ ability to pay dividends; AltaGas’ ability to service or refinance its debt and manage its credit rating and risk; prevailing 
economic conditions; potential  litigation;  AltaGas’  relationships  with external  stakeholders,  including  Aboriginal  stakeholders; 
volume throughput and the impacts of commodity pricing, supply, composition and other market risks; available electricity prices; 
interest  rate,  exchange rate  and  counterparty  risks; the  Harmattan  Rep  agreements;  legislative  and  regulatory  environment; 
underinsured losses; weather, hydrology and climate changes; the potential for service interruptions; availability of supply from 
Cook Inlet; availability of biomass fuel; AltaGas’ ability to economically and safely develop, contract and operate assets; AltaGas’ 
ability to update infrastructure on a timely basis; AltaGas’ dependence on certain partners; impacts of climate change and carbon 
taxing;  effects  of  decommissioning,  abandonment  and  reclamation  costs;  impact  of  labour  relations  and  reliance  on  key 

personnel;  cybersecurity  risks;  risks  associated  with  the  acquisition  of  WGL,  the  financing  of  the  WGL  Acquisition  and  the 
underlying business of WGL; and other factors set out in AltaGas’ continuous disclosure documents. 

Many factors could cause AltaGas' or any of its business segments' actual results, performance or achievements to vary from 
those described in this MD&A including, without limitation, those listed above as well as the assumptions upon which they are 
based proving incorrect. These factors should not be construed as exhaustive. Should one or more of these risks or uncertainties 
materialize, or should assumptions underlying forward-looking statements prove incorrect, actual results may vary materially 
from  those  described  in  this  MD&A  as  intended,  planned,  anticipated,  believed,  sought,  proposed,  estimated,  forecasted, 
expected, projected or targeted and such forward-looking statements included in this MD&A should not be unduly relied upon. 

The  impact  of  any  one  assumption,  risk,  uncertainty  or  other  factor  on  a  particular  forward-looking  statement  cannot  be 
determined  with  certainty  because  they  are  interdependent  and  AltaGas’  future  decisions  and  actions  will  depend  on 
management’s assessment of all information at the relevant time. These statements speak only as of the date  of this MD&A. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report3 
 
 
AltaGas does not intend, and does not assume any obligation, to update these forward-looking statements except as required by 
law. The forward-looking statements contained in this MD&A are expressly qualified by these cautionary statements. 

Financial outlook information contained in this MD&A about prospective financial performance, financial position or cash flows is 
based on assumptions about future events, including economic conditions and proposed courses of action, based on  AltaGas 

management's  (Management)  assessment  of  the  relevant  information  currently  available.  Readers  are  cautioned  that  such 
financial outlook information contained in this MD&A should not be used for purposes other than for which it is disclosed herein. 

Additional  information  relating  to  AltaGas,  including  its  quarterly  and  annual  MD&A  and  Consolidated  Financial  Statements, 
Annual Information Form, and press releases are available through AltaGas' website at www.altagas.ca or through SEDAR at 
www.sedar.com. 

ALTAGAS ORGANIZATION 

The  businesses  of  AltaGas  are  operated  by  AltaGas  and  a  number  of  its  subsidiaries  including,  without  limitation,  AltaGas 
Services (U.S.) Inc.; in regards to the gas business, AltaGas Extraction and Transmission Limited Partnership, AltaGas Pipeline 
Partnership,  AltaGas  Processing  Partnership,  AltaGas  Northwest  Processing  Limited  Partnership  and  Harmattan  Gas 
Processing Limited Partnership; in regards to the power business, Coast Mountain Hydro Limited Partnership, Blythe Energy 
Inc. (Blythe), and AltaGas San Joaquin Energy Inc.; and, in regards to the utility business, AltaGas Utilities Inc. (AUI), Heritage 
Gas  Limited  (Heritage  Gas),  Pacific  Northern  Gas  Ltd.  (PNG),  and  SEMCO  Energy,  Inc.  (SEMCO).  SEMCO  conducts  its 
Michigan natural gas distribution business under the name SEMCO Energy Gas Company (SEMCO Gas) and its Alaska natural 
gas distribution business under the name ENSTAR Natural Gas Company (ENSTAR).   

OVERVIEW OF THE BUSINESS 

AltaGas, a Canadian corporation, is a North American diversified energy infrastructure company with a focus on owning and 
operating assets to provide clean and affordable energy to its customers. AltaGas has three business segments: 

  Gas, which transacts more than 2 Bcf/d of natural gas and includes natural gas gathering and processing, natural gas 
liquids (NGL) extraction and fractionation, transmission, storage, natural gas and NGL marketing, and the Corporation's 
indirectly held one-third interest in Petrogas Energy Corp. (Petrogas), through which AltaGas’ interest in the Ferndale 
Terminal is held;   

  Power, which includes 1,708 MW of gross capacity from natural gas-fired, hydro, wind, and biomass generation facilities, 

and energy storage assets located across North America; and   

  Utilities, serving over 580,000 customers  through ownership of regulated natural gas distribution utilities across  North 
America and a regulated natural gas storage utility in the United States, delivering clean and affordable natural gas to 
homes and businesses.   

As at December 31, 2017, AltaGas’ enterprise value exceeded $10 billion. With physical and economic links along the energy 
value  chain,  together  with  its  experienced  and  talented  workforce  of  more  than  1,600  people,  and  its  efficient,  reliable  and 
profitable assets, market knowledge and financial discipline, AltaGas has provided strong, stable and predictable returns to its 
investors. AltaGas focuses on maximizing the profitability of its assets, adding services that are complementary to its existing 
business segments, and growing through the acquisition and development of energy infrastructure.   

2017 GROWTH HIGHLIGHTS 

  On January 3, 2017, AltaGas announced a positive Final Investment Decision (FID) on the Ridley Island Propane Export 
Terminal (RIPET), having received approval from federal regulators. On May 5, 2017, AltaGas LPG Limited Partnership 
(AltaGas LPG), a wholly-owned subsidiary of AltaGas, and Vopak Development Canada Inc. (Vopak), a wholly-owned 
subsidiary of Koninklijke Vopak N.V. (Royal Vopak), a public company incorporated under the laws of the Netherlands, 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report4  
 
 
  
 
  
 
 
 
  
 
formed the Ridley Island LPG Export Limited Partnership (RILE LP) for the development of RIPET. AltaGas’ subsidiaries 
hold a 70 percent interest in RILE LP, with Vopak holding the remaining 30 percent interest;   

  On January 25, 2017, AltaGas entered into a definitive agreement (the Merger Agreement) to indirectly acquire WGL 
Holdings,  Inc.  (the  WGL  Acquisition).  Pursuant  to  the  Merger  Agreement,  following  the  consummation  of  the  WGL 
Acquisition, WGL Holdings, Inc. (WGL) common shareholders will receive US$88.25 per common share in cash, which 
represents a total enterprise value of approximately US$7.2 billion, including the assumption of approximately US$2.7 
billion of debt as at December 31, 2017;   

  On June 29, 2017, AltaGas modified its existing take-or-pay agreement with Birchcliff Energy Ltd. (Birchcliff) to incent 
increased utilization of the Gordondale facility until late 2020. The modifications made apply solely to volumes above the 
existing take-or-pay volume commitments; 

 

 

In August 2017, the Michigan Public Service Commission (MPSC) approved SEMCO Gas’ application to construct, own, 

and operate the Marquette Connector Pipeline (MCP); 

In September 2017, the Regulatory Commission of Alaska (RCA) issued a decision on ENSTAR’s 2016 rate case. As a 
result, the rate increase implemented in the third quarter of 2016 was made permanent and a further permanent rate 
increase was implemented effective November 1, 2017; 

  On  October  1,  2017,  commercial  operations  commenced  at  Townsend  2A,  a  99  Mmcf/d  shallow-cut  gas  processing 

facility located on the existing Townsend site, adjacent to the currently operating Townsend Facility;   

  On December 1, 2017, commercial operations commenced with the first 10,000 Bbls/d train at the North Pine NGL Facility 

(the North Pine Facility), located approximately 40 km northwest of Fort St. John, British Columbia; and 

 

In December 2017, the power purchase agreement (PPA) at the Craven biomass facility was extended to December 31, 
2027. 

2017 FINANCIAL HIGHLIGHTS     
(Normalized EBITDA, normalized funds from operations, normalized net income, net debt, and net debt to total capitalization ratio are non-GAAP financial measures. 

Please see Non-GAAP Financial Measures section of this MD&A.) 

  Normalized EBITDA was $797 million, an increase of 14 percent compared to $701 million in 2016;   

  Normalized funds from operations were $615 million ($3.60 per share), an 11 percent increase compared to $554 million 

($3.52 per share) in 2016; 

  Net income applicable to common shares was $30 million ($0.18 per share) compared to $155 million ($0.99 per share) in 

2016; 

  Normalized net income was $204 million ($1.19 per share), an increase of 33 percent compared to $153 million ($0.98 per 

share) in 2016; 

  Net debt was $3.6 billion as at December 31, 2017, compared to $3.9 billion as at December 31, 2016;   
  Net debt to total capitalization ratio was 44 percent as at December 31, 2017, compared to 46 percent as at December 31, 

2016;   

 

In the first quarter of 2017, AltaGas completed the sale of 84.5 million subscription receipts at an issue price of $31 per 
subscription receipt for total gross proceeds of approximately $2.6 billion including the over-allotment option that was 

partially exercised;   

  On February 22, 2017, AltaGas closed a public offering of 12.0 million cumulative 5-year minimum rate reset redeemable 

preferred shares, Series K, at a price of $25 per share for aggregate gross proceeds of $300 million;   

  On  March  15,  2017,  AltaGas  completed  the  sale  of  the  Ethylene  Delivery  Systems  (EDS)  and  the  Joffre  Feedstock 
Pipeline (JFP) transmission assets to Nova Chemicals Corporation (Nova Chemicals) for net proceeds of approximately 
$67 million;   

  On  October  4,  2017,  AltaGas  issued  an  aggregate  of  $450  million  senior  unsecured  medium-term  notes  (MTNs) 
consisting of $200 million of MTNs with a coupon rate of 3.98 percent maturing on October 4, 2027, and $250 million of 
MTNs with a coupon rate of 4.99 percent maturing on October 4, 2047; and 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report5  
 
  On October 18, 2017, the Board of Directors approved an increase in the monthly dividend by $0.0075 per common share 
to $0.1825 ($2.19 per common share annualized) effective for the November 2017 dividend, a 4.3 percent increase. 

ALTAGAS’ VISION AND OBJECTIVE 

AltaGas’ vision is to be a leading North American diversified energy infrastructure company. The Corporation’s overall objective 
is to generate superior economic returns by investing in low-risk, long-life energy assets. The Corporation focuses on assets 
underpinned by contracts with strong counterparties and regulated assets, both of which provide stable utility-like returns and 
long-life  cash  flows.  Diversification  increases  the  stability  of  earnings  and  cash  flows  and  reduces  AltaGas'  exposure  to 
commodity market volatility. AltaGas’ earnings are underpinned by three business segments, and within each segment there is 

further diversification: by customer and service type in the Gas segment; by fuel source, customer, and geography within the 
Power segment; and by regulatory jurisdiction in the Utilities segment. The Corporation also focuses on expanding its business 
through acquisitions and organic growth to further support dividend and capital growth. AltaGas believes that in the long-term, 
the abundant supply of natural gas in North America and the increasing global demand for clean energy will continue to provide 
opportunities for sustained growth across all of its business segments. Superior service, safety, and reliability are also integral to 
AltaGas’ customer value proposition.   

STRATEGY 

Consistent with its mandate of overseeing and directing the Corporation’s strategic direction, AltaGas' Board of Directors (Board 
of Directors) is actively engaged in regular review of the Corporation's strategy. The Corporation continually assesses the macro 
and micro-economic trends impacting its business and seeks opportunities to generate value for shareholders, including through 
acquisitions, dispositions or other strategic transactions. Opportunities pursued by AltaGas must meet strategic, operating and 
financial criteria. 

The  Corporation’s  long-term  strategy  is  to  grow  in  attractive  areas  and  maintain  a  long-term,  balanced  mix  of  energy 
infrastructure assets across its Gas, Power and Utilities business segments. AltaGas' business strategy is underpinned by the 

growing demand for clean energy with natural gas as a key fuel source. 

Owning and Operating Energy Infrastructure 

Natural  gas  supply  and  demand  fundamentals  and  the  demand  for  clean  energy  have  consistently  underpinned  the 
Corporation’s strategy. In recent years, the supply and demand fundamentals have been changing. Abundant supply of natural 
gas  in  North  America,  driven  by  new  technology  that  has  improved  the  economics  of  unconventional  gas  plays,  has  been 
positive news for North American energy consumers and has led to renewed interest in natural gas as an economically priced, 
clean-burning fuel. As a result, the use of natural gas for power generation, household, and commercial and industrial uses has 
increased substantially, providing significant opportunities across AltaGas’ Gas, Power and Utilities segments to invest in and 

optimize its assets.   

In the Gas segment, AltaGas’ strategy is to provide a fully-integrated midstream service offering to its customers across the 
energy value chain. As part of this strategy, the Corporation builds and acquires gas gathering and processing infrastructure on 
behalf of, or from, producers wishing to redeploy capital to exploration and production activities, rather than to non-core activities 
such as midstream services. Canada produces a surplus of gas, NGL and crude oil. The U.S. has traditionally been the sole 
export  market  for  this  surplus,  but  with  the  U.S.  now  having  a  surplus as  well,  its  demand  for  import  of  these  products  has 
decreased.  As  a  result,  netbacks  have  been  less  attractive  for  Canadian  producers.  AltaGas  believes  that  energy  market 

diversification is critical for the Canadian energy sector. Investing in infrastructure for export outside of North America provides 
an opportunity for Canadian producers to align the vast supply of NGL and natural gas reserves with the growing demand from 
Asia. AltaGas is uniquely positioned to provide producers with a competitive service offering across the integrated value chain, 
from  wellhead  to  end  markets  by  way  of  export  terminals.  Access  to  Asian markets  provides market  diversity  to  producers, 
especially those in the Montney, Deep Basin, and Duvernay regions under development in northeastern British Columbia and 
western Alberta. AltaGas is uniquely positioned to deliver higher netbacks to producers for their NGL by establishing a western 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report6  
  
 
  
 
 
 
 
energy  hub  in  northeast  British  Columbia,  through  RIPET,  which  is  currently  under  construction,  and  through  its  ownership 
interest in Petrogas and the Ferndale Terminal. AltaGas also has access to Asian markets through its relationship with Idemitsu 
Kosan Co.,Ltd. (Idemitsu), which owns 51 percent of Astomos Energy Corporation (Astomos), the largest liquefied petroleum 
gas (LPG) importer in Japan (Mitsubishi Corporation owns the remaining 49 percent of Astomos). On January 25, 2017, the 
Corporation  announced  its  pending  acquisition  of  WGL.  WGL  has  a  growing  midstream  business  with  investments  in  gas 

gathering infrastructure and regulated gas pipelines in the Marcellus/Utica gas formation located in the northeast United States 
with capabilities for connections to marine-based energy export opportunities via the North American Atlantic coast through the 
Cove Point LNG Terminal in Maryland being developed by a third party, which is currently in the final stages of commissioning. 
The combined enterprise will be uniquely positioned with key gas midstream assets in both the Marcellus/Utica and Montney gas 
formations, which are two of North America’s most prolific gas basins. Further information on the pending acquisition of WGL can 
be found in the Developments Relating to the Pending WGL Acquisition section of this MD&A.   

There  has  been  an  increase  in  the  demand  in  North  America  for  clean  sources  of  highly  flexible  power  to  complement  the 

significant growth in renewable power, while also helping to fill the void as coal and nuclear power declines. The Power segment 
is  focused  on  developing,  building,  owning,  and  operating  a  diversified  portfolio  of  clean  energy  assets  that  reduce  the 
Corporation’s  carbon  footprint  and  on  meeting  North  America's  demand  for  clean  energy.  AltaGas  is  positioned  to  take 
advantage of this opportunity. In California, the California Independent System Operator (CAISO) has stated that up to 15,000 
MW of fast ramping flexible capacity is required to meet the needs of the current 50 percent Renewable Portfolio Standard of 
California by 2030 given planned retirements of once-through cooling gas facilities, as well as the  planned retirement of the 
Diablo Canyon  nuclear plant. With the retirements of traditional generating assets and the increased variability of a growing 
renewable  asset  base,  the  demand  for  highly-responsive  generation  and  energy  storage  assets  is  increasing. In  northern 
California,  the  Corporation  is  focused  on  owning  generation  assets  in  locally  constrained  areas  near  load  pockets  as  local 

resource  adequacy  needs  result  in  more  opportunities  for  expansion,  re-contracting  and  energy  storage.  AltaGas  is  well 
positioned in northern California with the acquisition of the San Joaquin Facilities and Ripon in 2015. In southern California, there 
has been an increasing demand for non-gas resource adequacy as evidenced by the Aliso Canyon storage request for proposals 
(RFPs), which has resulted in the successful bidding, construction and operation of the Pomona Energy Storage Facility, located 
in the east Los Angeles load pocket. This site is well suited for future development of additional battery storage. The Corporation 
expects further development and expansion opportunities to arise from existing sites, including Ripon, as well as third party sites 
similar  to  the  recently  completed  Pomona  Energy  Storage  Facility.  The  Corporation’s  pending  acquisition  of  WGL  fits 
synergistically with this strategy. WGL owns a growing non-regulated contracted power business, with a focus on distributed 
generation  and  energy  efficiency  assets  throughout  the  United  States.  WGL  also  owns  a  retail  gas  and  power  marketing 

business serving approximately 222,000 customers across five states in the U.S. Further information on the pending acquisition 
of WGL can be found in the Developments Relating to the Pending WGL Acquisition section of this MD&A. 

In the Utilities segment, the Corporation is focused on finding innovative ways to continue to safely and reliably deliver clean and 
affordable natural gas to more customers. AltaGas focuses on growing rate base through adding customers, including serving 
power plants within service jurisdictions, and through consumers fuel switching as abundant natural gas supply provides a clean 
low-cost energy alternative. In addition, the Utilities segment continues to invest in existing distribution systems through pipeline 
replacement  and  system  betterment  programs  to  ensure  safe,  reliable  service  for  AltaGas’  customers  as  well  as  to  meet 

increased  residential  and  commercial  demand.  The  Marquette  Connector  Pipeline  that  will  be  constructed  in  Marquette, 
Michigan  by  SEMCO  Gas  will  provide  approximately  35,000  customers  in  its  service  territory  with  needed  redundancy  and 
additional supply options. The Alton Natural Gas Storage Project currently under construction in Nova Scotia will help increase 
reliability of supply and lower costs for AltaGas’ natural gas distribution customers in that area. The Corporation also seeks to 
execute strategic utility acquisitions and dispositions when opportunities arise as demonstrated by the Corporation’s pending 
acquisition of WGL, which is the sole common shareholder of Washington Gas Light Company (Washington Gas), a regulated 
natural gas utility headquartered in Washington, D.C., serving more than 1.2 million customers in Maryland, Virginia, and the 
District of Columbia. Further information on the pending acquisition of WGL can be found in the Developments Relating to the 
Pending WGL Acquisition section of this MD&A. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report7 
 
 
Maintain Financial Strength and Flexibility   

Integral to AltaGas’ strategy is maintaining financial strength and flexibility, an investment grade credit rating, and ready access 
to  capital  markets.  Financial  discipline  and  effective  risk  management  are  fundamental  cornerstones  of  the  Corporation’s 
strategy. AltaGas seeks to optimize risk and reward, ensuring that returns are commensurate with the level of risk assumed. 
AltaGas’ financing strategy is to ensure the Corporation has sufficient liquidity to meet its capital requirements and to do so at the 

lowest  cost  possible.  As  a  growth-oriented  energy  infrastructure  company,  AltaGas  creates  value  for  its  investors  through 
minimizing its cost of capital and maximizing its return on invested capital, which ensures operating cash flows are maintained 
and growing. The Corporation develops and executes financing plans and strategies to ensure investment grade credit ratings, 
diversity in its funding sources, and ready access to capital markets. 

A  key  element of  the  Corporation’s stable business  model  is  mitigating  its exposure  to certain  market  price  risks  as  well as 
volume risk. In addition to its diversification strategy, the Corporation has developed risk management processes that mitigate 
earnings volatility from commodity price risk and volume risk. AltaGas proactively hedges foreign exchange rates and commodity 

price exposures when it is prudent to do so. As well, the continued management of counterparty credit risk remains an ongoing 
priority. AltaGas partially mitigates the foreign exchange exposure on its U.S. investments by incorporating U.S. dollar (US$) 
denominated capital, both debt and preferred shares, into its financing strategy. 

Continue to Develop Organizational Capability to Support the Strategy 

AltaGas recognizes that to be successful in operating and constructing energy infrastructure, specific core competencies are 
required. To that end, the Corporation continues to focus on hiring and training the required competencies to execute its strategy, 
and ensuring that the performance management processes support the long-term objective of creating shareholder value.   

Sustainability   

AltaGas adheres to a strong set of core values, which reinforce its commitment to integrating sustainability fundamentals into 
every aspect of the business. AltaGas recognizes the broad range of stakeholders that are reached through its operations, and is 
focused on owning and operating assets that provide clean and affordable energy to its customers. As the Corporation continues 
to evolve and expand its diversified energy assets, AltaGas will continue to operate in a safe, reliable manner, while working 
closely  with  governments,  regulatory  agencies  and  stakeholders  to  maintain  positive  relationships. By  balancing  economic 
priorities with AltaGas’ social and environmental values, AltaGas believes it can help meet the growing global demand for clean 
energy, while continuing to deliver sustainable benefits to its shareholders. 

Focus on Project Delivery 

AltaGas has the internal capabilities and resources to safely deliver capital projects on time and on budget, in close partnership 
with Aboriginal peoples and community stakeholders. AltaGas has significant in-house construction expertise, demonstrated by 
the successful completion of more than $2.2 billion in projects since 2012, which provides a significant competitive advantage. 
Cost efficiency and strong operating performance are the drivers for increasing value as the Corporation continues to build out its 
portfolio  of  assets.  Key  initiatives  continue  to  increase  proficiency  in  managing  costs  and  include  upgrades  to  cost  tracking 
systems and implementing best practice procurement strategies.   

STRATEGY EXECUTION   

AltaGas  has  successfully  executed  its  strategy  to  create shareholder  value  and  to  maintain  financial strength  and  flexibility, 
growing from under $6 billion in assets five years ago to total assets of over $10 billion at the end of 2017. In the last five years, 
the Corporation  has reported a 19 percent compound annual growth  rate in normalized EBITDA  and a 9  percent compound 
annual  growth  rate  in  dividends  per  share.  AltaGas  delivers  an  effective  balance  between  yield  and  growth.  The  pending 
acquisition of WGL supports AltaGas’ long-term vision by reinforcing AltaGas’ strategy of focusing on high quality, low risk and 
long-lived  assets  to  achieve  a  diversified  long-term  growing  business  mix  in  three  key  energy  infrastructure  segments.  The 

pending acquisition is expected to accelerate the Corporation’s growth, resulting in combined total assets of over $22 billion. 
AltaGas  expects  to  continue  investing  in  attractive  high  growth  jurisdictions  and  is  focused  on  achieving  a  balanced  mix  of 
energy infrastructure assets over the medium to long-term. The attractive growth prospects in each of WGL’s regulated utility, 
midstream energy services and commercial energy system business lines, of which the large majority are regulated and/or under 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report8  
 
 
 
 
  
 
long-term contracts, is complementary to AltaGas’ long-term vision. Please refer to the Developments Relating to the Pending 
WGL Acquisition section of this MD&A for further information. 

AltaGas continues to progress its integrated northeast British Columbia strategy. Construction was completed ahead of schedule 
and approximately $5 million under budget at Townsend 2A and this asset entered service on October 1, 2017. NGL produced 

from Townsend 2A is transported to the North Pine Facility via pipelines owned by AltaGas. On December 1, 2017, commercial 
operations commenced with the first 10,000 Bbls/d NGL separation train at the North Pine Facility, which was completed ahead 
of schedule and approximately $15 million under budget. The North Pine Facility is connected to existing AltaGas infrastructure 
in the region and has access to the CN rail network, allowing for the transportation of propane from the North Pine Facility to 
RIPET. AltaGas strives to meet producer needs for new markets and higher netbacks by advancing energy export projects. On 
January 3, 2017, AltaGas announced a positive FID for the construction of RIPET, a propane export terminal on Ridley Island 
near Prince Rupert, British Columbia. This propane export facility is expected to be the first LPG export terminal off the west 
coast of Canada, and is being designed to ship up to 1.2 million tonnes per annum. Please refer to the Growth Capital section in 

this MD&A for further details regarding RIPET.   

AltaGas  continues  to  drive  its  strategy  to  grow  its  highly  contracted,  clean  power  generation  portfolio.  The  Power  segment 
consists entirely of clean energy assets with approximately 74 percent and 26 percent of generation capacity from gas-fired and 
renewables  sources,  respectively.  In  the  fourth  quarter  of  2016,  AltaGas  safely  commissioned  the  Pomona  Energy  Storage 
Facility,  located  at  the  existing  Pomona  facility  in  the  east  Los  Angeles  Basin  of  Southern  California.  AltaGas  continues  to 
evaluate  a  future  expansion  of  the  facility  based  on  Southern  California  Edison’s  (SCE)  potential  procurement  of  additional 
energy storage in the Los Angeles Basin to further improve system reliability, including in relation to the ongoing concerns over 
the  Aliso  Canyon  gas  storage  facility.  As  Publicly  Owned  Utilities  (POUs),  Investor  Owned  Utilities  (IOUs),  and  Community 

Choice Aggregators (CCAs) add renewable resources to meet California’s renewable portfolio standard obligations as well as 
the California Public Utilities Commission’s (CPUC) energy storage procurement target of 1,325 MW, sites with strong solar and 
wind  characteristics  as  well  as  cost  effective  transmission  interconnections  are  in  high  demand.  AltaGas  expects  that  its 
greenfield and brownfield development sites throughout California, which are well suited for renewable, energy storage or both 
renewable and energy storage projects, could attract multi-year power purchase agreements through the standard RFP process. 
In addition, AltaGas is actively engaged in a strategy to optimize the value of its gas-fired facilities once they come off of their 
respective PPAs (between 2020 and 2022). This includes evaluating further enhancements to the facilities to improve the value 
of energy and ancillary services, selling resource adequacy (RA) to IOUs, POUs and CCAs, and the near term monetization of 
specific  surplus  assets  and  associated  offsite  infrastructure.  For  example,  AltaGas’  Ripon  facility  has  been  awarded  an  RA 

contract for June through September 2018. Similar to the Pomona Energy Storage project, the market and operation knowledge 
gained from winning an RA contract will further advance AltaGas’ California strategy.   

Continued  enhancements  have  been  made  to  AltaGas’  $1  billion  investment  in  the  Northwest  Hydro  Facilities,  including 
numerous  operational  and  mechanical  facility  improvements  focused  on  increased  efficiency  and  reliability.  The  continued 
improvements,  particularly  at  Forrest  Kerr,  enhance  value  by  positioning  the  assets  to  operate  under  a  wider  variety  of 
environmental conditions. In 2017 the facilities showed incremental productivity growth of greater than 6 percent, and though 
seasonally lower fall volumes limited total output, the facilities entered 2018 better positioned to deliver incremental generation.   

Across the five separate utility franchises throughout North America, AltaGas continues to focus on safely and reliably delivering 
customers  clean,  affordable  energy.  In  2017,  AltaGas  achieved  customer  growth  across  all  utilities,  and  grew  rate  base  by 
expanding  its  existing  infrastructure  through  system  upgrade  programs  and  organic  growth  opportunities.  In  August  2017, 
SEMCO  Gas  received  approval  of  its  application  to  construct,  own  and  operate  the  Marquette  Connector  Pipeline,  allowing 
SEMCO Gas to provide needed redundancy and additional supply options to its existing customers as well as additional natural 
gas capacity to Michigan’s Upper Peninsula to allow for growth. Please refer to the  Growth Capital section in this MD&A for 

further details regarding the MCP.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report9 
 
 
 
 
In 2017, the Corporation enhanced its financial strength and flexibility through a combination of internally-generated cash flows, 
the Premium DividendTM, Dividend Reinvestment and Optional Cash Purchase Plan (DRIP), and the issuance of approximately 
$750 million of preferred shares and MTNs. In addition, AltaGas also completed the sale of 84.5 million subscription receipts at 
an issue price of $31 per subscription receipt for total gross proceeds of approximately $2.6 billion (see Subscription Receipts 

section in this MD&A for further details). AltaGas maintained sufficient liquidity and a strong balance sheet throughout the year 

and exited 2017 with approximately $2.0 billion of available credit facilities and debt-to-total capitalization of 44 percent. AltaGas 
entered  2018  well  positioned  to  fund  its  growth  capital  and  to  take  advantage  of  growth  opportunities  such  as  the  pending 
acquisition of WGL. Please refer to the Developments Relating to the Pending WGL Acquisition section of this MD&A. 

During 2017, the Board of Directors approved a dividend increase of approximately 4 percent from $2.10 per share to $2.19 per 
share  on  an  annualized  basis.  The  dividend  increase  reflects  the  success  of  AltaGas’  strong  operational  and  financial 
performance across its three business segments, as well as the stability and sustainability of its cash flows.   

2018 OUTLOOK   

AltaGas  expects  the WGL  Acquisition  to  close  in  mid-2018.  As  a  combined  entity,  AltaGas  expects  normalized  EBITDA  to 
increase by approximately 25 to 30 percent and normalized funds from operations to increase by approximately 15 to 20 percent.   

Included  in  the  above  forecast  are  AltaGas’  expectations  of  normalized  EBITDA  and  normalized  FFO  being  reduced  by 
approximately 5 percent as a result of the U.S. tax reform. The impact to normalized net income is expected to be neutral. The 
lower tax rates at the combined regulated Utilities will provide customers with decreased rates while providing the opportunity to 
drive rate base growth. The U.S. non-regulated Gas and Power segments are expected to record higher normalized net income 

as a result of the lower U.S. federal tax rate, partially offset by limitations on the deductibility of interest expense for  U.S. tax 
purposes. 

The WGL Acquisition is expected to drive growth in all three business segments. The combined Utilities segment is expected to 
have  the  largest  contribution  to  EBITDA,  followed  by  the  Gas  segment.  Specifically  for  Utilities,  the  combined  segment  is 
expected to have an overall rate base of approximately $5 billion and is expected to grow through planned capital investments in 
2018. The number of customers is also expected to increase by approximately 1.2 million. The Gas segment is expected to 
benefit from the addition of WGL’s pipeline investments in the prolific Marcellus/Utica gas  resource regions as well as a gas 
supply agreement associated with the Cove Point LNG Terminal which is in the final stages of commissioning. WGL’s investment 

in the Stonewall Gas Gathering System is currently in-service and WGL expects the Central Penn and Mountain Valley pipelines 
to be operational by the end of 2018. The Gas segment will also benefit from a full year of contributions from AltaGas’ Townsend 
2A and the first train of the North Pine Facility. Finally, the Power segment is expected to benefit from the addition of WGL’s 
distributed generation assets to its portfolio. For further information on the WGL Acquisition see Developments Relating to the 
Pending WGL Acquisition section of this MD&A.   

The overall forecasted normalized EBITDA and funds from operations for the combined business include assumptions around 
the timing of closing of the WGL Acquisition, the U.S./Canadian dollar exchange rate, the impact of certain contemplated asset 

monetizations and other financing initiatives as part of the WGL financing plan, and the impact of U.S. tax reform. Any variance 
from AltaGas’ current assumptions could impact the forecasted increase to normalized EBITDA and funds from operations. 

On a standalone basis, excluding the WGL Acquisition and potential asset monetizations, AltaGas expects a moderate increase 
to both normalized EBITDA and funds from operations in 2018 compared to 2017 related to its base business, mainly as a result 
of growth in the Gas segment. The moderate increase to normalized EBITDA and funds from operations for AltaGas’ standalone 
base business is primarily due to full year contributions from Townsend 2A and the first train of the North Pine Facility, higher 
realized frac spread mainly due to higher hedged prices, higher expected earnings from the Northwest Hydro Facilities due to 
contractual  price  increases  and  continued  efficiency  improvements,  and  rate  base  growth  at  certain  of  the  Utilities.  These 

increases may be partially offset by the impact of a weaker U.S. dollar on reported results of the U.S. assets, the impact of 

TM Denotes trademark of Canaccord Genuity Corp. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report10  
 
 
 
 
 
 
 
                                                           
planned turnarounds at the Harmattan and JEEP facilities, and the expiry of the PPA at the Ripon facility in the second quarter of 
2018. The U.S. tax reform is expected to be immaterially negative to normalized EBITDA and funds from operations for AltaGas’ 
U.S. businesses while, on a net income basis, the impact of the U.S. tax reform is expected to be immaterially positive. This 2018 
outlook does not include any potential upside associated with new developments in either the Gas or Power segments.   

AltaGas estimates an average of approximately 10,000 Bbls/d will be exposed to frac spreads prior to hedging activities. For 
2018, AltaGas has frac hedges in place for approximately 7,500 Bbls/d at an average price of approximately $33/Bbl excluding 
basis differentials. 

SENSITIVITY ANALYSIS   

AltaGas’ financial performance is affected by factors such as changes in commodity prices, exchange rates and weather. The 
following  table  illustrates  the  approximate  effect  of  these  key  variables  on  AltaGas’  expected  normalized  EBITDA  for  2018 

(excluding WGL). 

Factor   
Natural gas liquids fractionation spread(1) 
Degree day variance from normal - Canadian utilities(2) 
Degree day variance from normal - U.S. utilities(3) 
Change in CAD per US$ exchange rate 
(1)  Based on approximately 75 percent of frac spread exposed NGL volumes being hedged. 

Increase or 
decrease  

$1/Bbl 
5 percent 

5 percent 
$0.05 

Approximate impact 
on normalized EBITDA 
($ millions) 
  1  
  2  

  4  
  14  

(2)  Degree days - Canadian utilities relate to AUI and Heritage Gas service areas. A degree day is the cumulative extent to which the daily mean temperature falls 

below 15 degrees Celsius at AUI and 18 degrees Celsius at Heritage Gas. Normal degree days are based on a 20-year rolling average. Positive variances from 

normal lead to increased delivery volumes from normal expectations. Degree day variances do not materially affect the results of PNG as the British Columbia 

Utilities Commission (BCUC) has approved a rate stabilization mechanism for its residential and small commercial customers.   

(3)  Degree days - U.S. utilities relate to SEMCO Gas and ENSTAR service areas. For U.S. utilities degree days are a measure of coldness determined daily as the 

number of degrees the average temperature during the day in question is below 65 degrees Fahrenheit. Degree days for a particular period are determined by 

adding the degree days incurred during each day of the period. Normal degree days for a particular period are the average of degree days during the prior 15 

years for SEMCO Gas and during the prior 10 years for ENSTAR. 

DEVELOPMENTS RELATING TO THE PENDING WGL ACQUISITION   

On January 25, 2017, the Corporation entered into the Merger Agreement to indirectly acquire WGL. Pursuant to the Merger 
Agreement,  following  the  consummation  of  the  WGL  Acquisition,  WGL  common  shareholders  will  receive  US$88.25  per 
common share in cash, which represents a total enterprise value of approximately US$7.2 billion, including the assumption of 
approximately US$2.7 billion of debt as at December 31, 2017.   

WGL is a diversified energy infrastructure company and the sole common shareholder of Washington Gas, a regulated natural 
gas utility headquartered in Washington, D.C., serving approximately 1.2 million customers in Maryland, Virginia, and the District 
of Columbia. WGL has a growing midstream business with investments in natural gas gathering infrastructure and regulated gas 

pipelines  in  the  Marcellus/Utica  gas  formation  located  in  the  northeast  United  States,  with  capabilities  for  connections  to 
marine-based  energy  export  opportunities  via  the  North  American  Atlantic  coast  through  the  Cove  Point  LNG  Terminal  in 
Maryland being developed by a third party, which is currently in the final stages of commissioning. WGL also owns contracted 
clean  power  assets,  with  a  focus  on  distributed  generation  and  energy  efficiency  assets  throughout  the  United  States.  In 
addition, WGL  has  a  retail  gas  and  power  marketing  business  with  approximately  222,000  customers  in  Maryland,  Virginia, 
Delaware, Pennsylvania and the District of Columbia. Upon completion of the WGL Acquisition, AltaGas expects that it will have 
over $22 billion of assets and approximately 1.8 million rate regulated gas customers. 

Consummation  of  the WGL  Acquisition  is  subject  to  certain  closing  conditions,  including  certain  regulatory  and  government 

approvals, including approval by the Public Service Commission of the District of Columbia (PSC of DC), the Maryland Public 
Service Commission (PSC of MD), the Commonwealth of Virginia State Corporation Commission (SCC of VA), the United States 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report11 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
Federal Energy Regulatory Commission (FERC), and the Committee on Foreign Investment in the United States (CFIUS), as 
well as expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 
1976, as amended (HSR Act).   

Regulatory applications were filed with the PSC of DC, the PSC of MD, and the SCC of VA on April 24, 2017. On the same date, 

AltaGas and WGL also filed their voluntary Joint Notice to the CFIUS, and an application with FERC. On May 10, 2017, WGL 
common shareholders voted in favor of the Merger Agreement governing the proposed WGL Acquisition. On July 6, 2017, FERC 
approved the transaction, finding it to be consistent with the public interest. Also as of July 17, 2017, when the waiting period 
required by Section 7A(b)(1) of the HSR Act expired, the merger was deemed approved by the Federal Trade Commission and 
the Department of Justice, such approval being valid for one year. On July 28, 2017, CFIUS provided its approval for the WGL 
Acquisition. On October 20, 2017, the SCC of VA approved the WGL Acquisition. In Maryland, the hearing before the PSC of MD 
concluded on October 16, 2017, and on December 4, 2017 AltaGas and WGL announced that they had reached a settlement 
agreement with several of the intervenors in the Maryland proceeding. As a result, AltaGas and WGL filed a stipulation with the 

PSC of MD to extend the deadline for issuing its decision. The PSC of MD approved this request moving the date for a decision 
to on or before April 4, 2018. The hearing before the PSC of DC concluded on December 13, 2017, and a decision is expected to 
follow in the first half of 2018. On January 11, 2018, pursuant to the terms of the Merger Agreement, AltaGas elected to extend 
the Outside Date (as defined in the Merger Agreement) to July 23, 2018. 

AltaGas believes that closing of the WGL Acquisition will occur in mid-2018. AltaGas plans to fund the WGL Acquisition with the 
proceeds from its aggregate $2.6 billion bought deal and private placement of  subscription receipts, which closed in the first 
quarter  of  2017  (see  Subscription  Receipts  section  below).  In  addition,  AltaGas  has  US$3  billion  available  under  its  fully 

committed  bridge  facility,  which  can  be  drawn  at  the  time  of  closing. With  all  funding  required  for  the  closing  of  the  WGL 

Acquisition in place, AltaGas can evaluate and pursue its asset sale process in a prudent and timely fashion in step with the 
regulatory process and consistent with AltaGas’ long term strategic vision. Management has presently identified a total of over 
$4.0  billion  of  assets  from  AltaGas’  Gas,  Power  and  Utilities  business  segments  in  respect  of  which  it  is  evaluating  various 
options for monetization that could include the sale of either minority and/or controlling interests. Management expects to realize 
over $2 billion from its asset sale process in 2018. With the present optionality available to AltaGas and in light of a number of 
factors including recent developments in the California Resource Adequacy markets, AltaGas has discontinued the previously 
announced sale process of its California power assets. AltaGas will instead continue to pursue other structuring and commercial 
opportunities to unlock the value of the California assets. Additional financing steps could include offerings of senior debt, hybrid 
securities, and equity-linked securities (including preferred shares), subject to prevailing market conditions. 

Subscription Receipts 

On February 3, 2017, the Corporation issued approximately 80.7 million subscription receipts pursuant to a private placement 
and public offering to partially fund the WGL Acquisition at a price of $31 each for total gross proceeds of approximately $2.5 
billion. On March 3, 2017, the over-allotment option was partially exercised for an additional 3.8 million subscription receipts for 
gross proceeds of approximately $118 million. The sale of the additional subscription receipts pursuant to the over-allotment 
option  brings  the  aggregate  gross  proceeds  to  approximately  $2.6  billion.  Each  subscription  receipt  entitles  the  holder  to 
automatically  receive  one  common  share  upon  closing  of  the  WGL  Acquisition.  While  the  subscription  receipts  remain 

outstanding, holders will be entitled to receive cash payments (Dividend Equivalent Payments) per subscription receipt that are 
equal to dividends declared on each common share. Such Dividend Equivalent Payments will have the same record date as the 
related common share dividend and will be paid to holders of the subscription receipts concurrently with the payment date of 
each such common share dividend. The Dividend Equivalent Payments will be paid first out of any interest on the escrowed 
funds and then out of the escrowed funds. If the Merger Agreement is terminated after the common share dividend declaration 
date, but before the common share dividend record date, subscription receipt holders of record on the termination date shall 
receive a pro-rata payment of the dividend as the Dividend Equivalent Payment. If the Merger Agreement is terminated on  a 
record date or following a record date but on or prior to the dividend payment date, holders will be entitled to receive the  full 
Dividend Equivalent Payment.   

The net proceeds from the sale of the subscription receipts are held by an escrow agent pending, among other things, receipt of 
all regulatory and government approvals required to finalize the WGL Acquisition and confirmation that the parties to the Merger 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report12  
 
 
 
 
Agreement  are  able  to  complete  the  WGL  Acquisition  in  all  material  respects  in  accordance  with  the  terms  of  the  Merger 
Agreement, but for the payment of the purchase price, and AltaGas has available to it all other funds required to complete the 
WGL Acquisition. If the escrow release notice and direction is not delivered on or prior to 5:00 pm (Calgary time) on September 
4, 2018, the Corporation will be required to make a termination payment equal to the aggregate issue price of such holder’s 
subscription receipts plus any unpaid Dividend Equivalent Payments owing to such holders of subscription receipts. 

GROWTH CAPITAL   

Based on projects currently under review, development or construction, AltaGas expects net capital expenditures in the range of 
$500 to $600 million (excluding WGL) for 2018. AltaGas’ Gas segment will account for approximately 55 to 60 percent of the total 
capital expenditures, while AltaGas' Utilities segment will account for approximately 25 to 30 percent and the Power segment will 
account for the remainder. Gas and Power maintenance capital is expected to be approximately $25 to $35 million of the total 
capital expenditures in 2018. The majority of AltaGas’ capital expenditures is focused on the continued construction at RIPET as 

well as maintaining and growing rate base at its existing utilities. The Corporation continues to focus on enhancing productivity 
and streamlining businesses, including the disposition of smaller non-core assets.   

AltaGas’  2018  committed  capital  program is  expected  to  be  funded  through  internally-generated cash  flow  and  the  DRIP.  If 
required, the Corporation also has sufficient borrowing capacity available under its credit facilities, as well as access to capital 
markets. 

Following  the  close  of  the WGL  Acquisition  (expected  close  date in  mid-2018),  the  consolidated 2018 capital program  on a 
combined basis including capital for WGL, is expected to be in the range of approximately $1.0 to $1.3 billion. Close to half of this 

total will be allocated to the Gas segment, with the majority of the remaining expected capital for the Utilities segment, followed 
by the Power segment. AltaGas expects that the largest portion of WGL's 2018 capital program subsequent to close  will be 
allocated to investments in the Central Penn and Mountain Valley gas pipeline developments in the Marcellus region. Capital 
allocated  to  WGL’s  utilities  business  will  represent  most  of  the  remaining  2018  capital  subsequent  to  close,  with  spending 
consistent with recent levels.   

Ridley Island Propane Export Terminal   

On January 3, 2017, AltaGas reached a positive FID on RIPET, having received approval from federal regulators. AltaGas has 
executed long-term agreements securing land tenure along with rail and marine infrastructure on Ridley Island.     

RIPET is expected to be the first propane export facility off the west coast of Canada. The site is near Prince Rupert, British 
Columbia,  and  is  subleased  from  Ridley  Terminals  Inc.  (RTI),  which  has  a  headlease  with  the  Prince  Rupert  Port  Authority 
(PRPA). The site has a locational advantage given very short shipping distances to markets in Asia, notably a 10-day shipping 
time compared to 25 days from the U.S. Gulf Coast. The brownfield site also benefits from excellent railway access and ample 
deep water access to the Pacific Ocean. AltaGas’ arrangements with RTI give AltaGas access to extensive land and water rights 
and a world class marine jetty,  which allows for the efficient loading of Very Large Gas Carriers that can access key global 
markets. Propane from British Columbia and Alberta will be transported to the facility using 50-60 rail cars per day through the 

existing CN rail network. The construction cost of RIPET is estimated to be approximately $450 to $500 million and RIPET is 
expected  to  ship  1.2  million  tonnes  of  propane  per  annum  (which  is  equivalent  to  approximately  40,000  Bbls/d  of  export 
capacity).   

On May 5, 2017, AltaGas LPG, a wholly-owned subsidiary of AltaGas, and Vopak, a wholly-owned subsidiary of Royal Vopak, a 
public company incorporated under the laws of the Netherlands, formed RILE LP to develop, own, and operate RIPET. AltaGas’ 
subsidiaries hold a 70 percent interest while Vopak holds a 30 percent interest in RILE LP. The construction cost of RIPET will be 
funded by AltaGas LPG and Vopak in proportion to their respective interests in RILE LP. As part of the arrangements, AltaGas 
entered into a long-term agreement for the capacity of RIPET  with RILE LP, and AltaGas and certain of its subsidiaries will 

provide construction and operating services to RILE LP. RILE LP will be consolidated by AltaGas.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report13  
 
 
 
 
 
 
 
Based on production from its existing facilities and forecasts from new plants under construction and in active development, 
AltaGas anticipates having physical volumes equal to approximately 50 percent of the expected capacity of 1.2 million tonnes 
per annum. The remaining 50 percent is expected to be supplied by producers and other suppliers. AltaGas has entered into 
negotiations  with  a  number  of  producers  and  other  suppliers  and  expects  to  underpin  approximately  40  percent  of  RIPET’s 
annual expected capacity under tolling arrangements with producers and other suppliers. 

AltaGas LPG and Astomos have entered into a multi-year agreement for the purchase of at least 50 percent of the 1.2 million 
tonnes  per annum  of propane  expected  to  be available  to be  shipped  from  RIPET  each  year.  Commercial  discussions  with 
Astomos and several third party off-takers for further capacity commitments are proceeding.   

Construction of RIPET commenced during the second quarter of 2017 and is proceeding pursuant to an agreement with RILE 
LP. AltaGas is using its self-perform model that has been successfully used to execute its other projects on time and on budget. 
Crews have completed work on the concrete outer wall for the propane tank and the inner steel tank roof was installed at the end 

of January 2018. The balance of plant fabrication and civil work is on track and the first modules are scheduled to be installed in 
the  first  quarter  of  2018.  All  long-lead  equipment  has  been  ordered  with  delivery  schedules  aligned  with  the  construction 
schedule. RIPET is expected to be in-service in the first quarter of 2019.   

Alton Natural Gas Storage Project   

Solution mining for cavern development of the Alton Natural Gas Storage Project, located near Truro, Nova Scotia is considered 
feasible to begin in 2018. The Nova Scotia Minister of Environment is expected to make a decision on the Industrial Approval (IA) 
appeal by Sipekne’katik First Nation (SFN) in the first half of 2018. In the meantime, the IA remains in effect for the project. 
AltaGas  continues  to  work  constructively  with  governments,  regulators,  and  SFN.  The  Alton  Natural  Gas  Storage  Project  is 

expected  to  provide  up  to  10  Bcf  of  natural  gas  storage  capacity.  The  first  phase  of  storage  service  is  now  expected  to 
commence in 2021.   

Marquette Connector Pipeline   

On August 23, 2017, the MPSC approved SEMCO Gas’ application to construct, own, and operate the MCP. The MCP is a 
proposed new pipeline that will connect the Great Lakes Gas Transmission Pipeline to the Northern Natural Gas Pipeline in 
Marquette,  Michigan,  which  will  provide  system  redundancy  and  increase  deliverability,  reliability  and  diversity  of  supply  to 
SEMCO Gas' approximately 35,000 customers in Michigan's Western Upper Peninsula. The MCP is estimated to cost between 
US$135 to $140 million. Engineering and property acquisitions are expected to begin in 2018 and construction is expected to be 

completed in 2019, with an anticipated in-service date by the end of the fourth quarter of 2019, which is earlier than the initial 
estimate of mid-2020.   

GAS   

Description of Assets 

AltaGas’ Gas segment serves customers primarily in the Western Canada Sedimentary Basin (WCSB) and transacts more than 
2 Bcf/d of natural gas including natural gas gathering and processing, NGL extraction and fractionation, transmission, storage, 

and  natural  gas  and  NGL  marketing.  Gas  gathering  systems  move  natural  gas  from  producing  wells  to  processing  facilities 
where impurities and certain hydrocarbon components are removed. The gas is then compressed to meet downstream pipelines' 
operating specifications for transportation. Extraction and fractionation facilities reprocess natural gas to extract and recover 
ethane  and  NGL.  As  at  December  31,  2017,  AltaGas  owned  approximately  1.7  Bcf/d  of  extraction  processing  capacity  and 
approximately 1.1 Bcf/d of raw field gas processing capacity. The Gas segment also includes an equity investment in Petrogas 
through AltaGas Idemitsu Joint Venture Limited Partnership (AIJVLP).   

Transmission pipelines deliver natural gas and NGL to distribution systems, end-users or other downstream pipelines. AltaGas 
uses  its  market  knowledge  and  expertise  to  create  value  by  buying  and  reselling  natural  gas;  providing  gas  transportation, 

storage, and gas and NGL marketing for producers; and sourcing gas supply for some of the Corporation's processing assets. 
The Gas segment also includes expansion and greenfield projects under development or construction, including RIPET and the 
Alton Natural Gas Storage Project discussed under the Growth Capital section of this MD&A.     

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report14  
 
 
 
 
 
 
 
Specifically, the Gas segment includes:   

 

 

 

 

 
 

 
 

Interests in five NGL extraction plants with net licensed inlet capacity of 1.7 Bcf/d. The extraction assets provide stable 

fixed-fee or cost-of-service type revenues and margin based revenues. The natural gas supply to AltaGas' extraction 
plants,  with  the  exception  of  Harmattan  and  Younger  extraction  plants,  depends  on  natural  gas  demand  pull  from 
residential, commercial and industrial usage inside and outside of Western Canada, and gas liquids demand pull from 
the Alberta petrochemical market and propane heating. Natural gas supply to Younger extraction plant (Younger) is 
dependent on the amount of raw natural gas processed at the McMahon gas plant, which is based on the robust natural 
gas  producing  region  of  northeastern  British  Columbia.  Harmattan’s  raw  natural  gas  supply  is  based  on  producer 
activity in the west-central region of Alberta. Harmattan is the only deep-cut and full fractionation plant in the area;   

Four  natural  gas  transmission  systems  with  combined  transportation  capacity  of  approximately  0.6  Bcf/d.  The 
transmission assets provide stable take-or-pay based revenues;   

Approximately 30 gathering and processing facilities in Western Canada and a network of approximately 5,000 km of 

gathering  and  sales  lines  that  gather  natural  gas  upstream  of  processing  facilities  and  deliver  natural  gas  into 
downstream pipeline systems that feed North American natural gas markets. The field facilities provide fee-for-service 
revenues based on volumes processed as well as revenues based on take-or-pay contracts. A significant portion of 
contracts flow through operating costs to the producers;   

50 percent ownership of the 5.3 Bcf Sarnia natural gas storage facility connected to the Dawn Hub in Eastern Canada;   

The Alton Natural Gas Storage Project under construction; 

Natural gas and NGL marketing and gas transportation services to optimize the value of the infrastructure assets and 

meet customer needs; 

50 percent ownership in AIJVLP, with the remaining 50 percent owned by Idemitsu; 

AIJVLP holds a two-thirds ownership interest in Petrogas, a leading North American integrated midstream company, 

with  an  extensive  logistics  network  consisting  of  over  1,800  rail  cars  and  24  rail  and  truck  terminals  providing  key 
infrastructure, supply logistics and marketing expertise. Petrogas also owns and operates the Ferndale Terminal;     

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report15 
 
 

 

 
 

A 15-year strategic alliance between  AltaGas and Painted Pony Energy Ltd. (Painted Pony) for the development of 

processing infrastructure and marketing services for natural gas and NGL. Since the formation of the strategic alliance 
in 2014, AltaGas completed the 198 Mmcf/d shallow-cut gas processing facility (the Townsend Facility) including the 
related  egress  pipelines  and truck  terminal,  and  the 99  Mmcf/d  Townsend  2A  (collectively  the  Townsend  facilities). 
AltaGas is the operator of these facilities and is also the marketer for Painted Pony’s gas and NGL;   

The first train of the North Pine Facility near Fort St. John, British Columbia with capacity to fractionate 10,000 Bbls/d of 

propane plus NGL mix, and 6,000 Bbls/d of condensate terminaling capacity and two eight inch diameter NGL supply 
pipelines (the North Pine Pipelines), each approximately 40 km in length;   

The Ridley Island Propane Export Terminal in British Columbia under construction; and 

A regional liquefied natural gas (RLNG) facility in Dawson Creek, British Columbia, which came into service in February 

2018.     

Capitalize on Opportunities 

AltaGas plans to grow its gas business by expanding and optimizing strategically-located assets and by adding new assets to 
serve customers by providing access to new markets, including Asia. New infrastructure is expected to be larger scale facilities 
supporting the vast reserves in North America. While providing safe and reliable service, AltaGas pursues opportunities in the 

Gas segment to deliver value to its customers and enhance long-term shareholder value. The Corporation's objectives are to: 

 

 

 

 
 

 
 

Capitalize on the infrastructure growth opportunities associated with growing natural gas and liquids supply in North 
America; 

Provide a fully-integrated midstream service offering including gas and NGL gathering and processing, fractionation, 

and transportation facilities, and logistics and marketing services to its customers across the energy value chain, with 
higher producer netbacks resulting from export access to higher value markets, including Asia; 

Maintain strong relationships with local communities, Aboriginal peoples, governments, and regulatory bodies; 

Maximize profitability of existing facilities by increasing capacity, utilization and efficiency; 

Mitigate volume risk through contractual structures, redeployment of equipment and expansion of geographic reach; 

Coordinate between facilities, business segments and product lines to improve efficiencies and maximize profits; and   

Expand into new natural gas infrastructure markets such as RLNG. 

In recent years, the WCSB has changed from a maturing basin to one capable of sustainable long-term growth via new low cost 
gas formations such as the Montney. The emergence of unconventional gas plays in the WCSB such as the Montney, as well as 
increased focus on horizontal multi-fracturing and completions technology, have resulted in abundant  natural gas supply and 
associated liquids. Market demand, including the demand generated from the LPG and potential LNG export projects on the 
west coast of North America, provides significant long-term growth opportunities for the Corporation’s Gas segment. AltaGas 

expects  to  capitalize  on  these  opportunities by  increasing  throughput  at  facilities,  by  increasing  working interests  in  existing 
plants, and by acquiring and constructing new facilities such as liquefaction, refrigeration, natural gas processing, extraction, 
fractionation, storage and transmission pipelines. AltaGas' 15-year strategic alliance with Painted Pony is an example of the 
Corporation's ability to partner with producers to provide a fully-integrated service offering.   

The Corporation also expects there to be opportunities to increase volumes by tying-in new wells and building or purchasing 
adjoining  facilities  and  systems  to  create  larger  processing  infrastructure  to  capture  operating  synergies  and  enhance  its 
competitive advantage. The strategic location of some of its existing gas processing infrastructure is expected to benefit from 
growing  natural  gas  production  in  northeastern  British  Columbia  and  western  Alberta,  in  response  to  the  development  of 

unconventional  sources  of  gas,  such  as  the  Montney  and  Duvernay  shale  plays.  The  Townsend  facilities  and  the  related 
infrastructure are examples of AltaGas' ability to capitalize on energy infrastructure growth opportunities. In December 2017, 
AltaGas entered commercial operations at the first train of the North Pine Facility, which provides NGL processing capacity to 
producers in the area and is connected to the Townsend facilities through pipelines. The North Pine Facility is well connected by 
rail to Canada’s west coast including RIPET. Through the Townsend facilities, the North Pine Facility and RIPET currently under 
construction, AltaGas is well positioned to provide a fully integrated midstream service offering while also providing access to 
higher netback markets for producer NGL. The Gordondale facility and the Blair Creek facility are also meeting liquids extraction 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report16  
 
 
 
needs in the Montney area as producers seek to increase netbacks by capitalizing on liquids-rich gas in this prolific area. Overall, 
the diverse nature of AltaGas' natural gas and NGL infrastructure is expected to provide ongoing opportunities for AltaGas to 
increase throughput, utilization and profitability.   

Due  to  the  integrated  nature  of  AltaGas'  gas  gathering  and  processing  assets,  transmission  services  are  often  offered  in 

combination with gathering and processing, natural gas marketing and extraction services. AltaGas is uniquely positioned to 
work with producers providing services across the integrated value chain, from wellhead to the coast and on to export markets. 
This is particularly the case with producers in the vast Montney, Deep Basin, and Duvernay resource plays under development in 
northeastern  British  Columbia  and  western  Alberta.  With  RIPET  near  Prince  Rupert,  British  Columbia  currently  under 
construction and the Petrogas Ferndale Terminal in the State of Washington, AltaGas can provide multiple outlets for producers 
to deliver their products to the highest value markets, including Asia. AltaGas also pursues additional opportunities to enhance 
the value of its infrastructure through services ancillary to its infrastructure based businesses. These include maintaining the cost 
effective flow of gas through extraction plants and increasing services provided to producers. AltaGas is also reviewing plant 

optimization  opportunities  which  will  generate  another  source  of  cash  flow  and  improve  customer  netbacks.  AltaGas  has 
significant gas market knowledge, which it employs across all its assets to enhance returns along the energy value chain and 
more effectively serve customers' needs.    

POWER   

Description of Assets 

AltaGas’  Power  segment  is  engaged  in  the  generation  and  sale  of  capacity,  electricity,  and  ancillary  services  and  related 
products in Alberta, British Columbia, California, Colorado, Michigan, and North Carolina, all of which are under contracts with 

the exception of the Alberta assets. AltaGas continues to expand its geographic footprint to capitalize on the demand for clean 
energy sources, while increasing earnings, cash flow stability, and predictability. 

As at December 31, 2017, the Power segment included 1,688 MW of gross power generation capacity from hydro, gas-fired, 
wind and biomass, 20 MW of energy storage capacity, along with an additional 450 MW of assets under development.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report17 
  
 
 
 
Specifically, the Power segment includes:   

 

 

 

 
 

 

Six  natural  gas-fired  plants  with  1,150  MW of  generating capacity  in  the  United  States,  including  the  523  MW  San 

Joaquin Facilities (Tracy, Hanford and Henrietta), the 507 MW Blythe Energy Center, and the 50 MW Ripon facility, all 
of  which  are  located  in  California,  and  the  70  MW  Brush  II  facility  in  Colorado.  All  facilities  are  under  PPAs  with 
creditworthy utilities;   

277  MW  of  operating  run-of-river  generation  in  British  Columbia  (the  Northwest  Hydro  Facilities),  contracted  under 

60-year Electricity Purchase Agreements (EPA) to 2074 for Forrest Kerr and Volcano, and to 2075 for McLymont, fully 
indexed to the Consumer Price Index (CPI) with BC Hydro;   

117 MW of wind generation, of which 102 MW is in British Columbia and 15 MW is in Colorado. All operating wind 
generation is sold via long-term EPAs; 

45 MW of cogeneration and 20 MW of gas-fired peaking plant capacity in Alberta;   

35 MW of biomass generation in the United States. The Grayling facility is under a long-term PPA with CMS Energy 

through 2027 while the Craven facility is contracted through 2027 with Duke Energy; and   

20 MW of lithium ion battery storage in Pomona, California, with a 10 year agreement for capacity under contract with 
SCE,  and  a  44  MW  gas-fired  facility  also  in  Pomona,  California  which  is  under  an  extended  outage  as  AltaGas 
evaluates repowering opportunities.     

On  November  30,  2015,  AltaGas  acquired  three  northern  California  natural  gas-fired  power  assets  (Tracy,  Hanford  and 
Henrietta) with total generating capacity of 523 MW,  located in the San Joaquin Valley. All three assets are fully contracted 
through 2022 with Pacific Gas & Electric Company (PG&E) under PPAs which are structured as tolling arrangements for 100 
percent  of  facility  energy,  capacity  and  ancillary  services.  This  is  in  addition  to  Ripon  acquired  in  early  2015,  which  is  also 
contracted with PG&E until May 31, 2018. Following the expiry of the PPA at Ripon, AltaGas has been awarded an RA contract 
for June through September 2018. Concurrently, AltaGas is also continuing to pursue battery storage opportunities at this site. 

In southern California, the existing 507 MW Blythe Energy Center is currently operating under a long-term PPA with SCE until 

July 31, 2020, serving the CAISO market. The facility is directly connected to a Southern California Gas Company natural gas 
pipeline for its supply and has reactivated an El Paso Gas Company connection as a second supply source, and interconnects to 
SCE and CAISO via its 67-mile transmission line. Development activities are ongoing that could potentially result in a significant 
expansion  in  AltaGas’  generation  capacity  in  the  vicinity  of  the  Blythe  Energy  Center.  The  Blythe  Energy  Center  also 
successfully implemented a Low Load Turn Down (LLTD) package in 2017, which reduced the minimum operating level from 
173 MW to 125 MW and increased the level of ancillary services certified by the CAISO by over 60 percent. The implementation 
of the LLTD coupled with the ability to draw gas from two gas pipeline systems has provided for increased reliability through a 
redundant gas source and led to a significant increase in capacity factor that is expected to continue into the future.   

In  early  2015,  AltaGas  acquired  Pomona,  which  is strategically  located  in  the east Los  Angeles  basin  load  pocket.  AltaGas 
constructed, owns and operates a 20 MW (80 MWh) lithium-ion battery storage facility at the Pomona site (the Pomona Energy 
Storage Facility) which entered service in December of 2016 and is under contract for 20 MW of resource adequacy capacity with 
SCE under a 10-year ESA. AltaGas retains the rights to the energy and ancillary service attributes of the facility, which are sold 
on a merchant basis into the CAISO. AltaGas is continuing to work on incremental development of additional energy storage at 
the existing Pomona site. 

AltaGas owns and operates the Northwest Hydro Facilities in northwest British Columbia with total generation capacity of 277 

MW. The three facilities include Forrest Kerr, Volcano, and McLymont. These facilities are each underpinned by 60-year EPAs, 
fully indexed to CPI. The EPA for Forrest Kerr and Volcano expires in 2074 and the EPA for McLymont expires in 2075. Impact 
Benefit Agreements are in place for all three facilities, ensuring a cooperative and mutually beneficial relationship between the 
Tahltan Nation and AltaGas. 

AltaGas  also  owns  the  102  MW Bear  Mountain Wind  Park (Bear  Mountain)  in  British  Columbia,  which  came  into  service  in 
October 2009 and has a 25-year EPA with BC Hydro, and a 50 percent interest in the Busch Ranch wind farm (Busch Ranch), a 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report18  
 
 
 
 
 
 
29  MW  wind  farm  in  Colorado  with  a  25-year  EPA  with  the  local  utility,  which  came  into  service  in  October  2012.  AltaGas’ 
biomass assets include a 30 percent working interest in a 37 MW wood biomass power facility in Grayling, Michigan and a 50 
percent  working  interest in a 48  MW  wood  biomass  power  facility  in  Craven  County,  North  Carolina.  The  Grayling  facility  is 
contracted under a long term PPA through 2027 with CMS Energy and the Craven facility is contracted through 2027 with Duke 
Energy.   

AltaGas also sells power to Commercial and Industrial (C&I) end-users in Alberta. Counterparties are subject to credit reviews 
and  credit  thresholds  in  the  normal  course  of  business.  AltaGas  actively  markets  electricity  and  gas  directly  to  end-users, 
enabling  the  Corporation  to  secure  fixed-price  sales  at  competitive  market  prices  while  earning  fees  associated  with  the 
administration of the metered data and billing. These C&I sales are typically for three to five year terms. A portion of the electricity 
sales are used to secure long-term power sales for AltaGas' Alberta generation portfolio, offering AltaGas price certainty. 

Capitalize on Opportunities   

While providing safe and reliable service, AltaGas pursues opportunities in the Power segment to deliver value to its customers 
and enhance long-term shareholder value. The Corporation's objectives are to: 

 
 

 

 

 

 
 

 

Capitalize on North American demand for clean energy; 

Further grow and diversify the power generation portfolio by geography and fuel source; 

Optimize  the  value  of  the  existing  gas-fired  facilities  in  California  through  active  management,  origination,  and 
additional technological and operational enhancements; 

Leverage  the  success  from  the  Pomona  Energy  Storage  Facility  to  secure  contracts  to  build  new  energy  storage 

projects both within California and outside of the existing AltaGas footprint; 

Assess  and  pursue  new  technology  offerings  with  solar  and  energy  storage  projects  in  California  and  the  Desert 

Southwest markets; 

Maintain strong relationships with local communities, Aboriginal peoples, governments, and regulatory bodies; 

Acquire and develop power infrastructure backstopped by long-term PPAs or supported by strong power supply and 

demand fundamentals; and 

Explore opportunities for new natural gas-fired and renewable power generation in Alberta.   

AltaGas' strategy is to develop, build, own and operate long-life, low-risk power infrastructure assets to deliver strong, stable 
returns for investors. Growth is focused on renewable sources of clean energy as the Corporation seeks to capitalize on the 
increasing demand for clean power while reducing its carbon footprint. 

The demand for clean energy continues to be strong across North America as the industry addresses climate change legislation 
and utilities are faced with the renewable portfolio standards. Utilities’ reliance on coal is lessening as its market share continues 
to decrease for environmental and economic reasons, with low cost natural gas and increasing renewables providing a cost 
competitive option to coal as a source of fuel on a marginal cost basis in many parts of North America.   

Opportunities to develop and own additional power generation are likely to arise with the growing North American demand for 
cleaner  energy  sources  such  as  natural  gas,  solar,  wind,  and  hydro.  AltaGas  has  significant  opportunities  to  expand  its 
generating assets in California and across the United States. Specifically in California,  the CPUC mandated the state’s three 
largest utilities to procure 1,325 MW of energy storage by 2020. In addition, the three utilities are to explore up to a combined 500 
MW of additional distributed energy storage systems. AltaGas expects to continue to leverage its existing sites as well as identify 
greenfield development opportunities to capitalize on these opportunities in California. In Alberta,  the Government of Alberta 
(GOA) is moving forward with phasing out coal-fired electricity generation by 2030, creating the potential opportunity for AltaGas 

to develop new gas-fired and renewable generation assets in the province.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report19 
 
 
 
 
 
UTILITIES   

Description of Assets 

AltaGas  owns  and  operates  utility  assets  that  store  and  deliver  natural  gas  to  end-users  in  Alberta,  British  Columbia,  Nova 
Scotia, Michigan and Alaska. AltaGas also owns a one-third equity interest in the utility that delivers natural gas to end-users in 

Inuvik, Northwest Territories. AltaGas' utility businesses serve over 580,000 customers and have a rate base of approximately 
$1.9 billion.   

The utilities are underpinned by regulated returns and regulatory regimes that generally provide stable earnings and cash flows. 
The  Utilities  segment  enhances  the  diversification  of  AltaGas'  portfolio  of  energy  infrastructure  assets  and  strengthens  the 
Corporation’s business profile, thus allowing the Corporation to meet its objective of generating economic returns by investing in 
regulated, long-life assets with stable earnings. 

The Utilities segment includes:   

 
 

 
 

 
 

 

SEMCO Gas in Michigan;   

ENSTAR in Alaska;   

65 percent interest in Cook Inlet Natural Gas Storage Alaska LLC (CINGSA) in Alaska;   

AUI in Alberta; 

PNG in British Columbia; 

Heritage Gas in Nova Scotia; and 

One-third interest in Inuvik Gas Ltd. (Inuvik Gas) and the Ikhil Joint Venture in the Northwest Territories. 

All of the utilities are allowed the opportunity to earn regulated returns. This return on rate base is composed of regulator-allowed 
financing costs and return on equity (ROE). Whether or not the utility is under a cost-of-service regulation or Performance Based 
Regulation (PBR) regulation, if actual costs are different from those recoverable through approved rates, the utility bears the risk 
of this difference other than for certain costs that are subject to deferral treatment. Inuvik Gas operates a natural gas distribution 

franchise in a regulatory environment where delivery service and natural gas pricing are market-based. 

Earnings in the Utilities segment are seasonal, as revenues are primarily based on the demand for space heating in the winter 
months, mainly from November to March. Costs, on the other hand, are generally incurred more uniformly over the year. This 
typically results in stronger first and fourth quarters and weaker second and third quarters. In Alberta, Nova Scotia, Michigan and 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report20  
 
 
 
 
 
 
Alaska,  earnings  can  be  impacted  by  variations  from  normal  weather  resulting  in  delivered  volumes  being  different  than 
anticipated. Increases in the number of customers or changes in customer usage are other factors that might typically affect 
delivered volumes, and hence actual earned returns for the Utilities segment. PNG is authorized by the BCUC to maintain a 
Revenue Stabilization Adjustment Mechanism regulatory account primarily to mitigate the effect of weather on earnings.   

SEMCO Gas 
SEMCO owns and operates a regulated natural gas distribution utility in Michigan under the name SEMCO Gas and has an 
interest in a regulated natural gas storage facility in Michigan. At the end of 2017, SEMCO Gas had approximately 309,000 
customers. Of these customers, approximately 91 percent are residential. In 2017, SEMCO Gas experienced customer growth 
of approximately 1 percent reflecting growth in the franchise areas and customer conversions with the favorable price of natural 
gas. The rate base at year end was approximately US$497 million. In 2017, the approved regulated ROE for SEMCO Gas was 
10.35 percent with an approved capital structure based on 49 percent equity. 

SEMCO Gas is regulated by the MPSC. It operates under cost-of-service regulation and utilizes actual results from the most 
recently completed fiscal year along with known and measurable changes in its application for new rates.   

SEMCO Gas has a Main Replacement Program (MRP) surcharge to recover a stated amount of accelerated main replacement 
capital expenditures in excess of what is authorized in its current base rates. The MRP began in 2011, was expanded in 2013 
and renewed for an additional five years in 2015. The anticipated annual average capital spending over the final five year period 
is approximately US$10 million. 

SEMCO Gas is required by Michigan law to establish an Energy Optimization Program (an EO plan) for their customers and to 

implement and fund various energy efficiency and conservation matters.  The costs of the measures offered through the EO 
program are recovered through surcharges imposed on all customers of SEMCO Gas. EO plans and reconciliations are subject 
to review and approval by the MPSC. SEMCO Gas also has the ability to earn a performance incentive if certain EO goals and 
objectives are met annually. During 2017, the MPSC issued an order for SEMCO Gas to collect US$1 million for the 2016 EO 
plan year performance incentive. During 2016, the MPSC issued an order for SEMCO Gas to collect US$1 million for the 2015 
EO plan year performance incentive.   

In  December  2016,  SEMCO  Gas  filed  an  application  with  the  MPSC  seeking  approval  to  construct,  own,  and  operate  the 
Marquette  Connector  Pipeline.  In  August  2017,  the  MPSC  approved  SEMCO’s  application.  Engineering  and  property 

acquisitions are expected to begin in 2018 and construction is expected to be completed in 2019, with an in-service date during 
the fourth quarter of 2019. Please refer to the Growth Capital section of this MD&A for further information. 

As required by an order issued by the MPSC in September 2012, SEMCO Gas filed a depreciation study with the MPSC in 
September 2017, using 2016 data. A MPSC order is expected in mid-2018. SEMCO Gas is also expected to file its next rate case 
in 2019. 

On December 27, 2017, the MPSC issued an order instructing all regulated utilities in Michigan to track the impact of the Tax 

Cuts and Jobs Act effective January 1, 2018 and sought comments from the utilities by January 19, 2018 on how any resulting 
benefit should flow back to customers. The Michigan utilities separately filed comments on January 19, 2018 and interested 
parties will have until February 2, 2018 to respond to the comments. The MPSC will then determine the appropriate process to 
establish how and when the savings will flow back to ratepayers. On February 22, 2018, the MPSC ordered the Michigan utilities 
to file an application no later than March 30, 2018 to determine the going forward tax credit to customers, with a goal for final 
commission determination no later than June 30, 2018 so that new rates can take effect on July 1, 2018. Within sixty days of the 
commission determination of the go-forward tax credit, the Michigan utilities are to submit a second application to determine the 
tax credit to customers for the prior period commencing January 1, 2018. Finally, no later than October 1, 2018, the utilities have 
to submit a third application to determine the deferred tax impact resulting from the tax law change and the method to flow the 

benefits to customers. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report21 
 
 
 
 
 
 
ENSTAR and CINGSA 
SEMCO owns and operates a regulated natural gas distribution utility in Alaska under the name ENSTAR. SEMCO, through a 
subsidiary, holds a 65 percent interest in CINGSA, a regulated natural gas storage utility in Alaska. At the end of 2017, ENSTAR 
had  approximately  144,000  customers  including  residential,  commercial  and  transportation  and  of  these  customers, 

approximately 91 percent are residential. In 2017, ENSTAR experienced customer growth of approximately 1 percent reflecting 
growth in the franchise areas and customer conversions with the favorable price of natural gas. The rate base at year end was 
approximately US$277 million for ENSTAR and US$74 million for CINGSA (SEMCO's 65 percent share).   

ENSTAR and CINGSA are regulated by the RCA and operate under cost-of-service regulation utilizing actual results from the 
most recently completed fiscal year along with known and measureable changes in their application for new rates. 

On June 1, 2016, ENSTAR filed the 2016 rate case requesting an overall annual base rate increase of approximately US$12 

million, or 3.9 percent on total revenues. On July 18, 2016, the RCA approved ENSTAR’s request for an additional 1.6 percent 
interim and refundable rate increase on total revenues, effective August 1, 2016. On September 22, 2017, the RCA issued a final 
order  (Rate  Order) deciding matters  in  ENSTAR’s  2016  rate  case,  including  granting  ENSTAR  a  return  on equity  of 11.875 
percent and return on total capital of 8.59 percent. The Rate Order also requires ENSTAR to file another rate case based upon 
calendar year 2020 by June 1, 2021. ENSTAR was further directed to file revised revenue requirement schedules, cost of service 
study, and tariff sheets reflecting the RCA’s decisions in its Rate Order, which ENSTAR filed on October 3, 2017. The net result 
of the changes showed an overall rate deficiency which was approximately US$1 million higher than provided for by the interim 
rates or an additional increase of approximately 0.3 percent on total test year revenues. On October 25, 2017, the RCA issued an 
order accepting ENSTAR’s filing, approving the revised rates effective November 1, 2017. 

CINGSA is required to file a rate case by April 30, 2018 using the 2017 historical test year. 

In  2013,  CINGSA  detected  higher  than  expected  pressure  during  its  biannual  shut-in.  CINGSA  determined  that  it  had 
encountered  a  pocket  of  gas  that  was  at  or  near  the  initial  reservoir  pressure.  Following  extensive  analysis,  CINGSA  has 
determined that the pocket of found gas it discovered totalled approximately 14.5 Bcf. In August 2015, CINGSA entered into a 
stipulation  with  most  of  its  customers  regarding  the  disposition  of  the  found  gas. Hearings  before  the  RCA  were  held  in 
September 2015. On December 4, 2015, the RCA issued an order that denied the stipulation, allowed CINGSA to sell up to 2 Bcf 
of  the  gas  and  required  that approximately  87  percent  of  the  net  proceeds  of  any  such  sale  be  allocated  to  CINGSA’s  firm 

customers. On January 4, 2016, CINGSA appealed the RCA decision to the Superior Court of Alaska. On August 17, 2017, the 
Alaska superior court issued a decision upholding each facet of the RCA’s decision. CINGSA did not exercise its right to appeal 
the superior court’s decision to the Alaska Supreme Court; the RCA’s decision and allocation of proceeds stands. 

AltaGas Utilities Inc. 
AUI  owns  and  operates  a  regulated  natural  gas  distribution  utility  in  Alberta.  At  the  end  of  2017,  AUI  served  approximately 
80,000  customers.  AUI’s customers  are  primarily  residential  and small  commercial  consumers located in  smaller  population 
centers or rural areas of Alberta. Customer growth in 2017 was 1 percent and AUI's rate base at year end was approximately 
$329 million. For 2017, the Alberta Utilities Commission (AUC) approved an ROE of 8.5 percent on 41 percent equity. For 2016, 

the AUC approved an ROE of 8.3 percent on 41 percent equity.     

AUI  is  currently  operating  under  a  revenue  cap  per  customer  formula  under  PBR.  The  first  generation  PBR  plan  was 
implemented for all Alberta electric and natural gas distribution companies, and was effective for AUI as of January 1, 2013. The 
first generation PBR term was from 2013 to 2017. The PBR framework is intended to incentivize utilities to be more efficient. 
Rates  are  adjusted  annually  based  on  a  customer  growth  factor  and  inflation  factor  less  expected  productivity.  Although 
formulaic, the first generation PBR mechanism allowed for recovery of costs determined to flow through directly to customers 
and related to material exogenous events. In addition, incremental capital funding was available for specific applied-for capital 
projects and programs meeting certain criteria. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report22  
 
 
 
 
 
 
 
Effective January 1, 2018, the AUC approved a second PBR term from 2018 to 2022. Under the second generation PBR plan, 
rates continue to be set under a revenue cap per customer formula with annual adjustments for customer growth and inflation 
less expected productivity. In addition, the PBR mechanism continues to allow for recovery of costs determined to flow through 
directly to customers and related to material exogenous events. Incremental capital funding continues to be available, however, 
it is now largely established under a formula based on historical capital additions rather than for specific applied-for projects and 

programs. 

On July 5, 2017, the AUC confirmed the final issues list for the Generic Cost of Capital (GCOC) proceeding to establish ROE and 
deemed equity  ratios for 2018  to 2020.  The scope of  the proceeding  will also include  income  tax  methods used  in  revenue 
requirement calculations, relevant issues regarding long-term debt and effect of ROE and deemed equity ratios on municipally 
owned utilities. The AUC intends to issue a GCOC decision before the end of 2018.     

Pacific Northern Gas Ltd. 

PNG operates a transmission and distribution system in the west central portion of northern British Columbia (PNG West) and in 
the areas of Fort St. John and Dawson Creek (FSJ/DC) and Tumbler Ridge (TR) in northeastern British Columbia (PNG(N.E.)). 
At  the  end  of  2017,  PNG  served  approximately  42,000  customers.  Approximately  87  percent  of  PNG’s  total  customers  are 
residential. PNG’s rate base at year end was approximately $205 million. The allowed ROE for PNG West and PNG(N.E.) TR is 
9.50 percent and for PNG(N.E.) FSJ/DC is 9.25 percent. The approved common equity ratio for PNG West and PNG(N.E.) TR is 
46.5 percent and for PNG(N.E.) FSJ/DC is 41 percent.   

PNG operates under a cost of service regulatory model whereby customer rates are set based on revenues that allow for the 
recovery of forecast costs plus an established rate of return on deemed common equity of PNG.   

During  2016,  the  BCUC  approved  PNG’s  2016  to  2017  Revenue  Requirements  Application  and  determined  final  customer 
delivery rates for 2016 and 2017. On November 30, 2017, PNG also submitted Revenue Requirements Applications for 2018 
and 2019 and received approvals for interim and refundable delivery rate increases effective January 1, 2018.  Coupled with 
forecast  changes  in  the  Revenue  Stabilization  Adjustment Mechanism  (RSAM)  rate  riders  and decreases  in  the  natural  gas 
commodity costs, core customers will see net decreases in annualized bundled rates of 9 percent in the PNG West service area, 
a 1 percent decrease in the Northeast Fort St. John and Dawson Creek service area and no rate changes in the Northeast 
Tumbler Ridge service area. 

Heritage Gas Limited 
Heritage Gas has the exclusive rights to distribute natural gas through its distribution system to all or part of seven counties in 
Nova Scotia, including the Halifax Regional Municipality. In 2017, Heritage Gas’ customer base grew by 6 percent and ended the 
year  at  approximately  6,900  customers.  Heritage  Gas  has  a  mix  of  residential,  small  commercial  and  large  commercial 
customers. Heritage Gas' rate base at year end was approximately $300 million. For 2017 and 2016, Heritage Gas’ approved 
regulated ROE was 11 percent with a prescribed capital structure of 45 percent equity and 55 percent debt.   

Heritage Gas operates under cost-of-service regulation and is regulated by the NSUARB. In order to maintain competitive pricing 

and customer  retention,  Heritage  Gas  filed a  Customer  Retention  Program  application  with  the  NSUARB  on  March  2, 2016 
requesting a decrease in distribution rates for commercial customers with consumption between 500 and 4,999 GJ per year and 
allowing for flexible rate increases from time to time for these customers up to their previously approved distribution rates while 
the  Customer  Retention  Program  is  in  place.  Heritage  Gas  also  requested  a  suspension  of  depreciation  and  a  50  percent 
capitalization rate for operating, maintenance and administrative expenses while the Customer Retention Program is in place. In 
September 2016, the NSUARB approved Heritage Gas’ Customer Retention Program application. The approval included all of 
the items requested by Heritage Gas as well as a reduction to residential customer rates of $0.50 per GJ during the 2016 to 2017 
and 2017 to 2018 winter seasons and a return on the deferred depreciation and operating expense balances arising from the 
Customer Retention Program of 4 percent.   

The competitive position of natural gas pricing relative to propane improved in the Atlantic region throughout 2017 and into early 
2018. Through enhanced gas procurement strategies and changes in market fundamentals, the average price of natural gas for 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report23 
 
 
 
 
 
 
Heritage Gas customers declined by over 20 percent in 2017 compared to 2016 and 2015, while the 2017 Sarnia benchmark 
price for propane increased by over 30 percent compared to 2016 and 40 percent compared to 2015. Accordingly, in November 
2017, Heritage Gas exercised the flexibility  provided for in the Customer Retention Program to increase the rates that were 
previously reduced as part of the Customer Retention Program, which has partially restored the rates to previously approved 
cost of service levels. Heritage Gas estimates that the Customer Retention Program will be in place through to 2021.   

Inuvik Gas Ltd. & Ikhil Joint Venture 
AltaGas  has  a  one-third  equity  interest  in  Inuvik  Gas  and  the  Ikhil  Joint  Venture  (Ikhil)  natural  gas  reserves,  which  have 
historically supplied Inuvik Gas with natural gas for the Town of Inuvik. The Ikhil natural gas reserves have depleted more rapidly 
than expected. As such, a propane air mixture system producing synthetic natural gas is currently the main source of energy 
supply for Inuvik Gas with Ikhil serving as a back-up. On December 7, 2016, Inuvik Gas notified the Town of Inuvik of its intention 
to terminate the gas distribution franchise agreement effective December 2018. Inuvik Gas is working with the Town of Inuvik 
over the course of the remaining term to transition ownership to the Town of Inuvik.     

Capitalize on Opportunities   

While providing safe and reliable service, AltaGas pursues opportunities in the Utilities segment to deliver value to its customers 
and enhance long-term shareholder value. The Corporation’s objectives are to:   

 

 
 

 
 

 

Maximize use of existing infrastructure and increase market penetration in order to maintain cost-effective rates; 

Invest in the safety and reliability of existing infrastructure, including delivery system upgrade programs; 

Expand  infrastructure  to  new  markets  to  bring  the  economic  and  environmental  benefits  of  gas  to  new  customers, 

without unduly burdening existing customers;   

Maintain strong relationships with local communities, Aboriginal peoples, governments, and regulatory bodies; 

Maintain strong community and regulatory relationships while ensuring fair returns to shareholders; and 

Acquire new franchises when the opportunities arise. 

AltaGas expects to grow its existing utility infrastructure through continued investment and capital improvements in franchise 
areas,  which  will  result  in  rate  base  growth  and  continued  customer  growth  including  the  conversion  of  users  of  alternative 
energy  sources  to  natural  gas.  AltaGas’  utilities  have  averaged  3  percent  rate  base  growth  over  the  past  three  years  after 
adjusting for the impact of foreign exchange translation. The average rate base growth was approximately 6 percent over the 
past three years prior to adjusting for the impact of foreign exchange translation. The growth in rate base is a direct result of 
prudent investments in current areas of operations, as well as the addition of new customers. The growth rate of new customers 
varies  amongst  the  Corporation’s  utilities  with  mature  utilities  seeing  more  moderate  growth  rates,  which  are  generally  tied 
closely to the economic growth of the respective franchise regions, while less mature utilities are experiencing higher average 

growth rates as market penetration rates increase. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report24  
 
 
 
 
CONSOLIDATED FINANCIAL REVIEW 

($ millions)   
Revenue 
Normalized EBITDA(1)  
Net income (loss) applicable to common shares 
Normalized net income(1) 
Total assets 
Total long-term liabilities 
Net additions to property, plant and equipment 
Dividends declared(2) 
Normalized funds from operations(1) 

($ per share, except shares outstanding)   
Net income (loss) per common share - basic 
Net income (loss) per common share - diluted 
Normalized net income - basic(1) 
Dividends declared(2) 
Normalized funds from operations(1) 
Shares outstanding - basic (millions) 

During the period(3) 
End of period 

Three Months Ended   
December 31 
2016 
  661  
  194  
  38  
  48  
  10,201  
  4,589  
  121  
  87  
  172  

2017 
  745  
  213  
  (11) 
  63  
  10,032  
  4,578  
  114  
  94  
  179  

Three Months Ended   
December 31 
2016 
  0.23  
  0.23  
  0.29  
  0.53  
  1.04  

2017 
  (0.06) 
  (0.06) 
  0.36  
  0.54  
  1.03  

  174  
  175  

  166  
  167  

Year Ended   
December 31 
2016 
  2,190  
  701  
  155  
  153  
  10,201  
  4,589  
  405  
  320  
  554  

Year Ended   
December 31 
2016 
  0.99  
  0.99  
  0.98  
  2.03  
  3.52  

  157  
  167  

2017 
  2,556  
  797  
  30  
  204  
  10,032  
  4,578  
  388  
  362  
  615  

2017 
  0.18  
  0.18  
  1.19  
  2.12  
  3.60  

  171  
  175  

(1)  Non-GAAP financial measure; see discussion in Non-GAAP Financial Measures section of this MD&A. 

(2)  Dividends declared per common share per month: $0.165 beginning on October 26, 2015, $0.175 beginning on August 25, 2016, and $0.1825 beginning on 

November 27, 2017. 

(3)  Weighted average. 

Three Months Ended December 31 

Normalized EBITDA for the fourth quarter of 2017 was $213 million, compared to $194 million for the same quarter in 2016. The 
increase was mainly due to higher realized frac spread and frac exposed volumes, higher river flows and prices at the Northwest 

Hydro Facilities, commencement of commercial operations at Townsend 2A, contributions from the  Pomona Energy Storage 
Facility, shorter planned outages at the Craven facility, higher NGL marketing revenue, colder weather in Michigan and Alberta, 
and higher rates at ENSTAR. These increases were partially offset by the impact from the weaker U.S. dollar on reported results 
from U.S. assets, higher operating and administrative expenses, the  impact of the sale of the EDS and the JFP transmission 
assets, and lower ethane revenue. For the three months ended December 31, 2017, the average Canadian/U.S. dollar exchange 
rate decreased to 1.27 from an average of 1.33 in the same quarter of 2016, resulting in a decrease in normalized EBITDA of 
approximately $5 million.             

Normalized funds from operations for the fourth quarter of 2017 were $179 million ($1.03 per share), compared to $172 million 

($1.04 per  share)  for  the same  quarter  in  2016,  reflecting  the  same  drivers  as  normalized  EBITDA,  partially  offset  by  lower 
distributions from Petrogas and higher current income tax expense. In the fourth quarter of 2017, AltaGas received $3 million of 
dividend  income  from  the  Petrogas  Preferred  Shares  (2016  -  $3  million)  and  $1  million  of  common  share  dividends  from 
Petrogas (2016 - $6 million).   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report25 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
Operating and administrative expenses for the fourth quarter of 2017 were $152 million, compared to $131 million for the same 
quarter in 2016. The increase was mainly due to transaction costs incurred on the pending WGL Acquisition of approximately 
$15 million and new assets placed into service, partially offset by the absence of the costs incurred in the fourth quarter of 2016 
related to the termination of the Sundance B Power Purchase Arrangements (Sundance B PPAs) of approximately $16 million. 
Depreciation and amortization expense for the fourth quarter of 2017 was $71 million, compared to $70 million for the same 

quarter in 2016. The increase was mainly due to new assets placed into service. Interest expense for the fourth quarter of 2017 
was  $44  million,  compared  to  $40  million  for  the  same  quarter  in  2016.  The  increase  was  mainly  due  to  financing  costs  of 
approximately  $4  million  (pre-tax)  associated  with  the  bridge  facility  for  the  pending  WGL  Acquisition,  and  higher  average 
interest rates, partially offset by lower average debt outstanding and higher capitalized interest. For further information  on the 
bridge facility please see Developments Relating to the Pending WGL Acquisition section of this MD&A.   

In the fourth quarter of 2017, AltaGas recorded pre-tax provisions on assets of approximately $138 million (after-tax $84 million) 
related to the Hanford and Henrietta gas-fired peaking facilities in California, a non-core gas processing facility in Alberta that has 

been classified as held for sale, and a non-core development stage peaking project in California.   

AltaGas recorded an income tax recovery of $76 million for the fourth quarter of 2017 compared to income tax expense of $6 
million in the same quarter of 2016. The decrease in income tax expense was mainly due to the tax recovery recognized on 
provisions on assets taken during the quarter of approximately $54 million, and the impact of the Tax Cuts and Jobs Act (the U.S. 
tax reform), which was enacted on December 22, 2017, and required the Corporation to revalue its U.S. deferred tax assets and 
liabilities using the lower federal corporate tax rate of 21 percent. The revaluation resulted in a decrease in income tax expense 
of approximately $34 million for AltaGas' non-regulated U.S. businesses. As AltaGas' U.S. utilities are subject to rate regulation, 
$102 million of deferred tax remeasurement was recorded as a deferred regulatory liability on the consolidated balance sheet. 

The  decreases  to  income  tax  expense  were  partially  offset  by  the  absence  of  the  $8  million  tax  recovery  recorded  on  the 
dissolution of ASTC Power Partnership (ASTC) in the fourth quarter of 2016 and a portion of transaction costs incurred on the 
pending WGL Acquisition not being tax deductible.   

Net loss applicable to common shares for the fourth quarter of 2017 was $11 million ($0.06 per share) compared to net income 
applicable to common shares of $38 million ($0.23 per share) for the same quarter in 2016. The decrease was mainly due to the 
provisions  on  assets  recognized  during  the  quarter  as  discussed  above,  transaction  costs  incurred  on  the  pending  WGL 
Acquisition of approximately $14 million after-tax, and higher interest expense, preferred share dividends and unrealized losses 
on  risk  management  contracts.  These  decreases  were  partially  offset  by  the  impact  of  the  U.S.  tax  reform,  higher  gains  on 

long-term investments, and the same previously referenced factors resulting in the increase in normalized EBITDA.   

Normalized net income was $63 million ($0.36 per share) for the fourth quarter of 2017, compared to $48 million ($0.29 per 
share) reported for the same quarter in 2016. The increase was mainly due to the same previously referenced factors resulting in 
the increase in normalized EBITDA, partially offset by higher interest expense and preferred share dividends. Normalizing items 
in the fourth quarter of 2017 included after-tax amounts related to transaction costs on acquisitions, unrealized losses on risk 
management contracts, gains on long-term investments, provisions on assets, development costs, financing costs associated 
with the bridge facility for the pending WGL Acquisition, and the  impact of the U.S. tax reform. In the fourth quarter of 2016, 

normalizing items included after-tax amounts related to transaction costs on acquisitions, unrealized losses on risk management 
contracts, losses on long-term investments, the Sundance B PPAs termination costs, and the tax recovery on the dissolution of 
ASTC.      

Year Ended December 31 

Normalized EBITDA for the year ended December 31, 2017 was $797 million, compared to $701 million in 2016. The increase 
was  primarily  due  to  a  full  year  of  EBITDA  generated  from  the  Townsend  Facility  and  the  commencement  of  commercial 
operations  at  Townsend  2A  in  October  2017,  higher  realized  frac  spread  and  frac  exposed  volumes,  higher  earnings  from 
Petrogas including a full year of dividend income from the Petrogas Preferred Shares, colder weather experienced at Alaska, 
Alberta, and Michigan, rate and customer growth at the Utilities, contributions from the Pomona Energy Storage Facility, higher 
contractual prices at the Northwest Hydro Facilities, higher NGL marketing revenue and storage margins, one-time income from 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report26  
 
 
 
 
 
 
SEMCO’s  non-regulated  business  related  to  a  customer  contract  and  insurance  proceeds,  and  shorter  planned  outages  at 
Craven. These increases were partially offset by the impact of the sale of the EDS and JFP transmission assets of approximately 
$11 million, the impact from the weaker U.S. dollar on reported results from U.S. assets, lower ethane revenue due to lower 
volumes, and lower rates at the Blair Creek facility. For the year ended December 31, 2017, the average Canadian/U.S. dollar 
exchange rate decreased to 1.29 from an average of 1.33 in the same period of 2016, resulting in a decrease in normalized 
EBITDA of approximately $10 million.             

Normalized funds from operations for the  year ended December 31, 2017 were $615 million ($3.60 per share), compared to 
$554 million ($3.52 per share) in 2016, reflecting the same drivers as normalized EBITDA, partially offset by lower distributions 
from Petrogas and higher current income tax expense. For the year ended December 31, 2017, AltaGas received $13 million of 
dividend income from Petrogas Preferred Shares (2016 - $6 million) and $5 million in common share dividends from Petrogas 
(2016 - $24 million). Petrogas retained cash to fund its growth capital program and for general corporate purposes.     

Operating and administrative expenses for the year ended December 31, 2017 were $574 million, compared to $509 million in 
2016. The increase was primarily due to transaction costs incurred on the pending WGL Acquisition of approximately $66 million, 
and new assets placed into service. This was partially offset by the absence of the Sundance B PPAs termination costs in the 
fourth quarter of 2016 of approximately $16 million and the non-utility workforce restructuring costs of approximately $7 million 
incurred in the second quarter of 2016. Depreciation and amortization expense for the year ended December 31, 2017 increased 
to $282 million, compared to $272 million in 2016 mainly due to new assets placed into service. Interest expense for the year 
ended December 31, 2017 was $170 million, compared to $151 million in 2016. The increase was mainly due to financing costs 
of approximately $19 million (pre-tax) associated with the bridge facility for the pending WGL Acquisition, and higher average 
interest  rates,  partially  offset  by  lower  average  debt  outstanding.  For  further  information  on  the  bridge  facility  please  see 
Developments Relating to the Pending WGL Acquisition section of this MD&A. 

In March 2017, AltaGas completed the sale of the EDS and the JFP transmission assets to Nova Chemicals for net proceeds of 
approximately  $67  million,  resulting  in  a  pre-tax  loss  on  disposition  of  $3  million.  In  the  second  quarter  of  2017,  the  Power 

segment  disposed  of  certain  non-core  development  stage  wind  assets  in  Alberta  for  proceeds  of  approximately  $1  million, 
resulting in a pre-tax gain on disposition of approximately $1 million.   

At  the  end  of  May  2017,  AltaGas  concluded  that  it  no  longer  exercised  significant  influence  over  Tidewater  Midstream  and 
Infrastructure Ltd. (Tidewater). Consequently, AltaGas ceased accounting for the investment under the equity method and now 
accounts  for  the  Tidewater  common  shares  at  fair  value.  For  the  year  ended  December  31,  2017,  AltaGas  recorded  an 
unrealized pre-tax gain of approximately $1 million representing the change in fair value of the investment in Tidewater.   

In 2017, AltaGas recorded pre-tax provisions on assets of $133 million (after-tax $80 million) related to the Hanford and Henrietta 
gas-fired peaking facilities in California and certain  non-core development stage projects in the Power segment. In addition, 
AltaGas recorded a pre-tax provision on asset of $7 million (after-tax $5 million) related to a non-core gas processing facility that 
has been classified as held for sale in the Gas segment.   

AltaGas recorded an income tax recovery of $34 million for the year ended December 31, 2017 compared to income tax expense 
of $33 million in 2016. Income tax expense decreased primarily due to the tax recovery recognized on provisions on assets taken 
during 2017 and the impact of the U.S. tax reform as discussed earlier. These decreases were partially offset by higher income 
tax expense due to a portion of transaction costs incurred on the pending WGL Acquisition and the unrealized losses on certain 

risk management contracts not being tax deductible, the absence of a $10 million tax recovery related to the disposition of certain 
non-core natural gas gathering and processing assets in Alberta to Tidewater (the Tidewater Gas Asset Disposition) in the first 
quarter of 2016, and the absence of a $8 million tax recovery related to the dissolution of ASTC in the fourth quarter of 2016.   

Net income applicable to common shares for the year ended December 31, 2017 was $30 million ($0.18 per share) compared to 
$155  million  ($0.99  per  share)  in  2016.  The  decrease  in  net  income  applicable  to  common  shares  for  the  year  ended 
December 31, 2017 was mainly due to the transaction costs  incurred on the pending WGL Acquisition of approximately $53 
million  after-tax,  higher  unrealized  losses  on  risk  management  contracts,  higher  interest  and  depreciation  and  amortization 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report27 
 
 
 
 
 
 
expense, higher losses on sale of assets, higher preferred share dividends, and provisions on assets, partially offset by the lower 
income tax expense and the same previously referenced factors resulting in the increase in normalized EBITDA. In addition, net 
income per common share decreased for the year ended December 31, 2017 compared to the same period in 2016 as a result of 
the same factors impacting net income, as well as the increase in common shares outstanding in 2017.   

Normalized net income for the year ended December 31, 2017 was $204 million ($1.19 per share), compared to $153 million 
($0.98 per share) in 2016. The increase was driven by the same factors impacting normalized EBITDA, partially offset by higher 
preferred  share  dividends,  interest  and  depreciation  and  amortization  expense.  For  the  year  ended  December 31,  2017, 
normalizing items included after-tax amounts related to unrealized losses on risk management contracts, the impact of the U.S. 
tax reform, transaction costs on acquisitions, financing costs associated with the bridge facility for the pending WGL Acquisition, 
losses on sale of assets, provisions on assets, gains on long-term investments, and development costs. For the year ended 
December 31, 2016, normalizing items included after-tax amounts related to unrealized losses on risk management contracts, 
transaction  costs  related  to  acquisitions,  gains  on  sale  of  assets  and  related  tax  recovery,  a  dilution  loss  recognized  on  an 

investment accounted for by the equity method, provision on investment accounted for by the equity method, restructuring costs, 
development costs, the Sundance B PPAs termination costs, the tax recovery on the dissolution of ASTC, and the recovery of 
development costs for the PNG Pipeline Looping Project.   

NON-GAAP FINANCIAL MEASURES 

This  MD&A  contains  references  to  certain  financial  measures  used  by  AltaGas  that  do  not  have  a  standardized  meaning 
prescribed by GAAP and may not be comparable to similar measures presented by other entities.  Readers are cautioned that 
these non-GAAP measures should not be construed as alternatives to other measures of financial performance calculated in 

accordance with GAAP. The non-GAAP measures and their reconciliation to GAAP financial measures are shown below. These 
non-GAAP measures provide additional information that Management believes is meaningful in describing AltaGas' operational 
performance, liquidity and capacity to fund dividends, capital expenditures, and other investing activities. The specific rationale 
for, and incremental information associated with, each non-GAAP measure is discussed below. 

References to normalized EBITDA, normalized net income, normalized funds from operations, net debt, and net debt to total 
capitalization throughout this MD&A have the meanings as set out in this section. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report28  
 
  
 
 
 
Normalized EBITDA 

($ millions) 
Normalized EBITDA 
Add (deduct): 

Three Months Ended 
December 31 
2016 
  194   $ 

2017 
  213   $ 

Year Ended   
December 31 
2016 
  701  

2017 
  797   $ 

$ 

Transaction costs related to acquisitions 
Unrealized losses on risk management contracts 
Gains (losses) on long-term investments 
Gains (losses) on sale of assets 
Provisions on assets 
Dilution loss on investment accounted for by the equity method 
Provision on investment accounted for by the equity method 
Development costs 
Restructuring costs 
Accretion expenses 
Sundance B PPAs termination costs 
Foreign exchange gains   
Recovery of pipeline looping project development costs at PNG 

EBITDA 
Add (deduct): 

Depreciation and amortization 
Interest expense 
Income tax recovery (expense) 

  (15) 
  (16) 
  7  
  — 
  (138) 
  — 
  — 
  (1) 
  — 
  (3) 
  — 
  — 
  — 
  47   $ 

  (71) 
  (44) 
  76  

$ 

Net income after taxes (GAAP financial measure) 

$ 

  8   $ 

  (2) 
  (12) 
  (1) 
  — 
  — 
  — 
  — 
  — 
  — 
  (3) 
  (8) 
  — 
  — 
  168   $ 

  (66) 
  (63) 
  4  
  (3) 
  (140) 
  — 
  — 
  (2) 
  — 
  (11) 
  — 
  2  
  — 
  518   $ 

  (3) 
  (11) 
  — 
  4  
  — 
  (1) 
  (5) 
  (1) 
  (7) 
  (11) 
  (8) 
  4  
  7  
  669  

  (70) 
  (40) 
  (6) 
  52   $ 

  (282) 
  (170) 
  34  
  100   $ 

  (272) 
  (151) 
  (33) 
  213  

EBITDA is a measure of AltaGas’ operating profitability prior to how business activities are financed, assets are amortized, or 
earnings are taxed. EBITDA is calculated from the Consolidated Statement of Income using net income adjusted for pre-tax 
depreciation and amortization, interest expense, and income tax expense. 

Normalized EBITDA includes additional adjustments for unrealized gains (losses) on risk management contracts, gains (losses) 
on long-term investments, transaction costs related to acquisitions, gains (losses) on the sale of assets, accretion expenses, 
foreign exchange gains (losses), provision on investment accounted for by the equity method, provisions on assets, restructuring 
costs, dilution loss on an investment accounted for by the equity method, the Sundance B PPAs termination costs, the recovery 
of development costs for the PNG Pipeline Looping Project, and certain non-capitalizable project development costs. AltaGas 
presents normalized EBITDA as a supplemental measure. Normalized EBITDA is frequently used by analysts and investors in 
the evaluation of entities within the industry as it excludes items that can vary substantially between entities depending on the 
accounting policies chosen, the book value of assets and the capital structure. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report29 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Normalized Net Income 

($ millions) 
Normalized net income 
Add (deduct) after-tax:         

Three Months Ended 
December 31 
2016 
  48   $ 

2017 
  63   $ 

Year Ended   
December 31 
2016 
  153  

2017 
  204   $ 

$ 

Transaction costs related to acquisitions 
Unrealized losses on risk management contracts 
Gains (losses) on long-term investments 
Gains (losses) on sale of assets 
Provisions on assets 
Dilution loss on investment accounted for by the equity method 
Provision on investment accounted for by the equity method 
Development costs 
Restructuring costs 
Sundance B PPAs termination costs 
Tax recovery on dissolution of ASTC 
Financing costs associated with the bridge facility 
Impact of U.S. tax reform 
Recovery of pipeline looping project development costs at PNG 

Net income (loss) applicable to common shares (GAAP financial measure)  $ 

  (14) 
  (12) 
  6  
  — 
  (84) 
  — 
  — 
  (1) 
  — 
  — 
  — 
  (3) 
  34  
  — 
  (11)  $ 

  (1) 
  (9) 
  (1) 
  — 
  — 
  — 
  — 
  — 
  — 
  (7) 
  8  
  — 
  — 
  — 
  38   $ 

  (53) 
  (55) 
  3  
  (3) 
  (85) 
  — 
  — 
  (1) 
  — 
  — 
  — 
  (14) 
  34  
  — 
  30   $ 

  (2) 
  (8) 
  — 
  15  
  — 
  (1) 
  (2) 
  (1) 
  (5) 
  (7) 
  8  
  — 
  — 
  5  
  155  

Normalized net income represents net income (loss) applicable to common shares adjusted for the after-tax impact of unrealized 

gains (losses) on risk management contracts, gains (losses) on long-term investments, transaction costs related to acquisitions, 
gains  (losses)  on  the  sale  of  assets,  provisions  on  investments  accounted  for  by  the  equity  method,  provisions  on  assets, 
restructuring costs, dilution loss on investment accounted for by the equity method, the Sundance B PPAs termination costs, the 
tax  recovery  on  the  dissolution  of  ASTC,  the  recovery  of  development  costs  for  the  PNG  Pipeline  Looping  Project,  certain 
non-capitalizable project development costs, financing costs associated with the bridge facility for the pending WGL Acquisition, 
and the impact of the U.S. tax reform. This measure is presented in order to enhance the comparability of AltaGas’ earnings, as 
it reflects the underlying performance of AltaGas’ business activities.   

Normalized Funds from Operations 

($ millions) 
Normalized funds from operations 
Add (deduct): 

Development costs 
Transaction and financing costs related to acquisitions 
Restructuring costs 
Sundance B PPAs termination costs 
Recovery of pipeline looping project development costs at PNG 

Funds from operations 
Add (deduct): 

Net change in operating assets and liabilities 
Asset retirement obligations settled 

Cash from operations (GAAP financial measure) 

Three Months Ended 
December 31 
2016 
  172   $ 

2017 
  179   $ 

Year Ended 
December 31 
2016 
  554  

2017 
  615   $ 

$ 

  (1) 
  (17) 
  — 
  — 
  — 
  161  

  — 
  (2) 
  — 
  (11) 
  — 
  159  

  (1) 
  (71) 
  — 
  — 
  — 
  543  

  (9) 
  (1) 
  151   $ 

  (21) 
  (2) 
  136   $ 

  6  
  (4) 
  545   $ 

$ 

  — 
  (3) 
  (7) 
  (11) 
  5  
  538  

  (78) 
  (4) 
  456  

Normalized  funds  from  operations  is  used  to  assist  Management  and  investors  in  analyzing  the  liquidity  of  the  Corporation 
without regard to changes in operating assets and liabilities in the period and non-operating related expenses (net of current 
taxes) such as transaction costs related to acquisitions, the Sundance B PPAs termination costs, the recovery of development 
costs for the PNG Pipeline Looping Project, certain non-capitalizable development costs, and restructuring costs.   

Funds from operations are calculated from the Consolidated Statement of Cash Flows and are defined as cash from operations 
before  net  changes  in  operating  assets  and  liabilities  and  expenditures  incurred  to  settle  asset  retirement  obligations. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report30  
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
Management uses this measure to understand the ability to generate funds for capital investments, debt repayment, dividend 
payments and other investing activities.   

Funds from operations and normalized funds from operations as presented should not be viewed as an alternative to cash from 
operations or other cash flow measures calculated in accordance with GAAP. 

Net Debt and Net Debt to Total Capitalization 

Net  debt  and  net  debt  to  total  capitalization  are  used  by  the  Corporation  to  monitor  its  capital  structure  and  financing 
requirements. It is also used as a measure of the Corporation’s overall financial strength. Net debt is defined as short-term debt, 
plus current and long-term portions of long-term debt, less cash and cash equivalents. Total capitalization is defined as net debt 
plus  shareholders’  equity  and  non-controlling  interests.  Additional  information  regarding  these  non-GAAP  measures  can  be 
found under the section Capital Resources of this MD&A.   

RESULTS OF OPERATIONS BY REPORTING SEGMENT 

Normalized EBITDA (1) 
($ millions) 
Gas 
Power 
Utilities 
Sub-total: Operating Segments 
Corporate   

Three Months Ended   
December 31 
2016 
  49   $ 
  63  
  90  
  202  
  (8) 
  194   $ 

2017 
  61   $ 
  72  
  90  
  223  
  (10) 
  213   $ 

Year Ended   
December 31 
2016 
  163  
  285  
  277  
  725  
  (24) 
  701  

2017 
  221   $ 
  303  
  298  
  822  
  (25) 
  797   $ 

$ 

$ 

(1)  Non-GAAP financial measure; See discussion in Non-GAAP Financial Measures section of this MD&A.   

GAS   

OPERATING STATISTICS 

Extraction inlet gas processed (Mmcf/d)(1) 
FG&P inlet gas processed (Mmcf/d)(1)   
Total inlet gas processed (Mmcf/d)(1)  
Extraction ethane volumes (Bbls/d)(1)   
Extraction NGL volumes (Bbls/d)(1) (2) 
Total extraction volumes (Bbls/d)(1) (3) 
Frac spread - realized ($/Bbl)(1) (4) 
Frac spread - average spot price ($/Bbl)(1) (5) 
(1)  Average for the period.     

(2)  NGL volumes refer to propane, butane and condensate. 

Three Months Ended 
December 31 
2016 

2017 

Year Ended   
December 31 
2016 

2017 

  983  
  441  

  1,424  
  26,125  

  42,181  
  68,306  

  18.02  
  30.66  

  972  
  365  

  1,337  
  32,233  

  37,454  
  69,687  

  6.11  
  8.40  

  970  
  392  

  1,362  
  27,493  

  37,850  
  65,343  

  13.40  
  20.50  

  918  
  312  

  1,230  
  30,211  

  34,224  
  64,435  

  7.41  
  8.27  

Includes Harmattan NGL processed on behalf of customers.   

(3) 
(4)  Realized frac spread or NGL margin, expressed in dollars per barrel of NGL, is derived from sales recorded by the segment during the period for frac exposed 
volumes plus the settlement value of frac hedges settled in the period less extraction premiums, divided by the total frac exposed volumes produced during the 
period. 

(5)  Average spot frac spread or NGL margin, expressed in dollars per barrel of NGL, is indicative of the average sales price that AltaGas receives for propane, 

butane and condensate less extraction premiums, before accounting for hedges, divided by the respective frac exposed volumes for the period. 

Inlet gas volumes processed at the extraction facilities for the three months ended December 31, 2017 increased by 11 Mmcf/d, 
compared to the same period in 2016. The increase was due to higher processed volumes at EEEP late in the fourth quarter of 
2017 due to higher available gas flows. Inlet gas volumes processed at the field gathering and processing (FG&P) facilities for 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
the  three  months  ended  December 31,  2017  increased  by  76  Mmcf/d  primarily  due  to  volumes  at  the  newly  constructed 
Townsend 2A, higher take-or-pay volumes at the Townsend Facility, and higher incentive volumes at the Gordondale facility. 

Inlet  gas  volumes  processed  at  the  extraction  facilities  for  the  year  ended  December 31,  2017  increased  by  52  Mmcf/d, 
compared to the same period in 2016. The increase was primarily due to higher processed volumes at EEEP and JEEP, due to 

reinjections and temporary shut-ins driven by low commodity prices in 2016. Inlet gas volumes processed at the FG&P facilities 
for the year ended December 31, 2017 increased by 80 Mmcf/d primarily due to volumes received at the Townsend facilities, 
partially offset by the impact from the Tidewater Gas Asset Disposition on February 29, 2016. 

Average  ethane  volumes  for  the  three  months  ended  December 31,  2017  decreased  by  6,108  Bbls/d,  while  average  NGL 
volumes increased by 4,727 Bbls/d compared to the same period in 2016. Lower ethane volumes were as a result of rejecting 
production at the Pembina Empress Extraction Plant (PEEP) and EEEP due to uneconomic pricing. Higher NGL volumes were 
primarily due to increased volumes produced at the Townsend facilities, and at the Gordondale facility. 

Average ethane volumes for the year ended December 31, 2017 decreased by 2,718 Bbls/d compared to the same period in 
2016. Lower ethane volumes were as a result of rejecting production at PEEP and EEEP due to uneconomic pricing, partially 
offset by normal operations at JEEP compared to temporary plant shut-ins and reinjections driven by lower commodity prices in 
the first half of 2016. Average NGL volumes for the year ended December 31, 2017 increased by 3,626 Bbls/d compared to the 
same  period  in  2016.  Higher  NGL  volumes  were  primarily  due  volumes  produced  at  the  Townsend  facilities,  and  normal 
operations at EEEP compared to temporary plant shut-ins and reinjections driven by lower commodity prices in the same period 
in 2016. 

Three Months Ended December 31 

The Gas segment reported normalized EBITDA of $61 million in the fourth quarter of 2017, compared to $49 million for the same 
quarter in 2016. In the fourth quarter of 2017, normalized EBITDA increased due to higher realized frac spread and frac exposed 
volumes, commencement of commercial operations at Townsend 2A, higher NGL marketing revenues,  and higher revenues 
from the Gordondale facility due to higher incentive volumes, partially offset by the sale of the EDS and JFP transmission assets 
in the first quarter of 2017, lower ethane revenue in the fourth quarter of 2017 due to lower volumes and pricing, and lower rates 
at the Blair Creek facility.   

AltaGas recorded equity earnings of $6 million from Petrogas, compared to $5 million in the same quarter of 2016. The increase 

in equity earnings from Petrogas was mainly due to higher volumes exported from the Ferndale Terminal and strengthening of 
Petrogas’ business lines supporting the upstream sector.   

During the fourth quarter of 2017, AltaGas hedged 6,500 Bbls/d of NGL at an average frac spread of $24/Bbl, excluding basis 
differentials. During the fourth quarter of 2016, AltaGas hedged approximately 3,100 Bbls/d of NGL at an average frac spread of 
$21/Bbl,  excluding  basis  differentials.  The  average  indicative  spot  NGL  frac  spread  for  the  fourth  quarter  of  2017  was 
approximately $31/Bbl compared to $8/Bbl in the same quarter of 2016 inclusive of basis differentials. The realized frac spread 
(based on average spot price and realized hedging losses inclusive of basis differential) of $18/Bbl (2016 - $6/Bbl) in the fourth 

quarter of 2017 was higher than the same quarter in 2016 due to improved commodity prices. 

During  the  fourth quarter  of  2017,  AltaGas  recognized  a  pre-tax  provision on  assets of  $7  million  related  to a  non-core  gas 
processing facility in Alberta, which has been classified as held for sale. No provisions were recorded during the fourth quarter of 
2016. 

Year Ended December 31 

The Gas segment reported normalized EBITDA of $221 million for the year ended December 31, 2017, compared to $163 million 
in  2016.  The  increase  in  normalized  EBITDA  was  due  a  full  year  of  contributions  from  the  Townsend  Facility  and  the 

commencement  of  commercial  operations  at  Townsend  2A  in  October  2017,  higher  realized  frac  spread  and  frac  exposed 
volumes, higher equity earnings from Petrogas, higher NGL marketing revenue, and higher natural gas storage margins, partially 
offset by the impact of the sale of the EDS and JFP transmission assets, lower ethane revenue due to lower volumes, and lower 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report32  
 
 
 
 
 
 
 
 
rates at the Blair Creek facility. Operating expenses related to the planned turnarounds at EEEP and the Turin facility in the 
second quarter of 2017 were fully offset by lower operating expenses at the Harmattan facility throughout the year. 

For the year ended December 31, 2017,  AltaGas recorded equity earnings of $25 million from Petrogas as compared to $12 
million  in  2016.  The  increase  in  Petrogas  earnings  was  due  to  dividend  income  earned  by  AltaGas  from  the  investment  in 

Petrogas Preferred Shares in June 2016 and solid contributions from all of Petrogas’ business segments.   

For the year ended December 31, 2017, AltaGas hedged 5,800 Bbls/d of NGL at an average frac spread of $23/Bbl, excluding 
basis differentials. For the year ended year ended December 31, 2016, AltaGas hedged approximately 1,100 Bbls/d of NGL 
volumes at an average frac spread of $24/Bbl, excluding basis differentials. The average indicative spot NGL frac spread for the 
year ended December 31, 2017 was approximately $21/Bbl compared to $8/Bbl in 2016 inclusive of basis differentials. Realized 
frac spread (based on average spot price and realized hedging losses inclusive of basis differentials) of $13/Bbl in 2017 (2016 - 
$7/Bbl) was higher than 2016 due to improved commodity prices. 

At  the  end  of  May  2017,  AltaGas  concluded  that  it  no  longer  exercised  significant  influence  over  Tidewater.  Consequently, 
AltaGas ceased accounting for the investment under the equity method and now accounts for the Tidewater common shares at 
fair value. For the year ended December 31, 2017, AltaGas recorded an unrealized pre-tax gain of approximately $1 million 
representing the change in fair value of the investment in Tidewater. 

For the year ended December 31, 2017, AltaGas recognized a pre-tax provision on assets of $7 million related to a non-core gas 
processing facility that has been classified as held for sale. No provisions were recorded for the year ended December 31, 2016. 

In addition, for the year ended December 31, 2017, AltaGas recognized a pre-tax loss of $3 million on the sale of the EDS and 
JFP transmission assets while during the year ended December 31, 2016, AltaGas recognized a pre-tax gain of $5 million on the 
Tidewater Gas Asset Disposition. 

POWER 

OPERATING STATISTICS 

Renewable power sold (GWh) 

Three Months Ended 
December 31 
2016 
  196  

2017 
  301  

Year Ended 
December 31 
2016 
  1,551  

2017 
  1,629  

Conventional power sold (GWh) 
Renewable capacity factor (%) 
Contracted conventional equivalent availability factor (%) (1) 
  97.3  
(1)  Calculated as the availability factor contracted under long-term tolling arrangements adjusted for occasions where partial or excess capacity payments have 

  1,950  
  39.1  

  374  
  18.8  

  2,844  
  39.6  

  1,059  
  27.5  

  98.1  

  96.3  

  99.8  

been added or deducted. 

During the fourth quarter of 2017, the volume of renewable power sold increased by 105 GWh and the volume of conventional 
power sold increased by 685 GWh, compared to the same quarter in 2016. The increase in renewable volumes was due to a later 
end to seasonally higher river flows at the Northwest Hydro Facilities, increased generation at the Craven facility due to shorter 

planned outages, and stronger wind conditions at the Bear Mountain wind facility. The increase in conventional volumes sold 
was due to continued increased run time at the San Joaquin Facilities and Blythe as a result of increased dispatch under the 
respective power purchase agreements and greater operational and fuel flexibility at Blythe. 

For  the  year  ended  December 31,  2017,  the  volume  of  renewable  power  sold  increased  by  78  GWh  and  the  volume  of 
conventional power sold increased by 894 GWh compared to 2016. The increase in renewable volumes sold was due to stronger 
wind conditions at the Bear Mountain wind facility, increased generation at the Craven facility due to shorter planned outages, 
and  the  addition  of  the  Pomona  Energy  Storage  Facility.  The  increase  in  conventional  volumes  sold  was  due  to  volume 
contributions from the San Joaquin Facilities, and higher dispatch at Blythe as the facility increased its cost effectiveness by 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report33 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
adding a second source of gas supply and expanding its operating limits, partially offset by the impact of the termination of the 
Sundance B PPAs effective March 8, 2016. 

The contracted conventional equivalent availability factor was lower for the three months ended December 31, 2017 as a result 
of Blythe requiring maintenance in the fourth quarter of 2017 due to increased dispatch. The contracted conventional equivalent 

availability factor was higher for the year ended December 31, 2017 as Blythe increased its overall availability. 

The renewable capacity factor during the fourth quarter of 2017 was higher due to strong wind conditions at the Bear Mountain 
wind facility. The renewable capacity factor for the year ended December 31, 2017 was comparable to 2016. 

Three Months Ended December 31 

The Power segment reported normalized EBITDA of $72 million in the fourth quarter of  2017, compared to $63 million in the 
same quarter of 2016. Normalized EBITDA increased as a result of higher river flows and higher prices at the Northwest Hydro 

Facilities, shorter planned outages at the Craven facility, and the addition of Pomona Energy Storage Facility. These increases 
were partially offset by the outage at Blythe in the fourth quarter of 2017, and the weaker U.S. dollar. 

During  the  fourth  quarter  of  2017,  the  Power  segment  recorded  pre-tax  provisions  on  assets  of  $131  million  related  to  the 
Hanford and Henrietta gas-fired peaking facilities and a non-core development stage peaking project in California. No provisions 
were recorded in the fourth quarter of 2016.   

Year Ended December 31 

The Power segment reported normalized EBITDA of $303 million for the year ended December 31, 2017, compared to $285 

million in 2016. Normalized EBITDA increased as compared to the same period in 2016 as a result of the impact of the absence 
of  equity  losses  from  the  Sundance  B  PPAs,  contribution  from  the  Pomona  Energy  Storage  Facility,  higher  prices  at  the 
Northwest Hydro Facilities, and increased contribution from the Craven facility due shorter planned outages. These increases 
were partially offset by lower realized gains on hedges, the weaker U.S. dollar, and a one-time credit received by AltaGas San 
Joaquin Energy Inc. in the second quarter of 2016 from PG&E related to the San Bruno pipeline explosion on PG&E’s natural 
gas pipeline in 2010. 

During the year ended December 31, 2017, the Power segment recorded pre-tax provisions on assets of approximately $133 
million  related  to  the  Hanford  and  Henrietta  gas-fired  peaking  facilities  and  certain  non-core  development  stage  gas-fired 

peaking assets in California and Alberta. During the year ended December 31, 2016, ASTC exercised its right to terminate the 
Sundance B PPAs effective March 8, 2016, and as a result, AltaGas recognized a pre-tax provision of $4 million on its investment 
in ASTC to settle the working capital deficiency.   

In addition, during the year ended December 31, 2017, the Power segment disposed of certain non-core development stage 
wind assets for a pre-tax gain of $1 million.     

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report34  
 
 
 
 
 
 
 
  
UTILITIES 

OPERATING STATISTICS 

Canadian utilities   

Natural gas deliveries - end-use (PJ)(1) 
Natural gas deliveries - transportation (PJ)(1) 

U.S. utilities 

Natural gas deliveries - end-use (Bcf)(1) 
Natural gas deliveries - transportation (Bcf)(1) 

Service sites (2) 
Degree day variance from normal - AUI (%) (3) 
Degree day variance from normal - Heritage Gas (%) (3) 
Degree day variance from normal - SEMCO Gas (%) (4) 
Degree day variance from normal - ENSTAR (%) (4) 
(1)  Petajoule (PJ) is one million gigajoules. Bcf is one billion cubic feet. 

Three Months Ended 
December 31 
2016 

2017 

Year Ended   
December 31 
2016 

2017 

  11.2  

  1.6  

  10.8  

  1.5  

  33.2  

  6.3  

  30.0  

  5.9  

  24.3  

  22.8  

  70.8  

  65.3  

  14.2  
  581,518  

  14.2  
  574,875  

  52.0  
  581,518  

  51.5  
  574,875  

  4.0  

  (4.6) 
  4.8  

  (8.3) 

  (0.6) 

  (1.0) 
  (6.1) 

  (1.4) 

  (1.1) 

  (3.7) 
(5.3) 

  (1.6) 

  (12.6) 

  (3.2) 
  (6.9) 

  (16.3) 

(2)  Service sites reflect all of the service sites of AUI, PNG, Heritage Gas and U.S. utilities, including transportation and non-regulated business lines. 

(3)  A degree day for AUI and Heritage Gas is the cumulative extent to which the daily mean temperature falls below 15 degrees Celsius at AUI and 18 degrees 

Celsius at Heritage Gas. Normal degree days are based on a 20-year rolling average. Positive variances from normal lead to increased delivery volumes from 

normal  expectations. Degree day  variances  do not  materially  affect the results of PNG, as  the  BCUC  has  approved a rate stabilization  mechanism  for  its 

residential and small commercial customers. 

(4)  A degree day for U.S. utilities is a measure of coldness determined daily as the number of degrees the average temperature during the day in question is below 

65 degrees Fahrenheit. Degree days for a particular period are determined by adding the degree days incurred during each day of the period. Normal degree 

days for a particular period are the average of degree days during the prior 15 years for SEMCO Gas and during the prior 10 years for ENSTAR. 

REGULATORY METRICS 

Year Ended December 31 
Approved ROE (%) 

Canadian utilities (average) 
U.S. utilities (average) 

Approved return on debt (%) 
Canadian utilities (average) 
U.S. utilities (average) 
Rate base ($ millions)(1) 

Canadian utilities 
U.S. utilities(2)(3) 

2017 

  9.7  
  11.6  

  5.0  
  6.0  

  833  

2016 

  9.7  
  11.8  

  5.0  
  6.0  

  790  

  840  
(1)  Rate base is indicative of the earning potential of each utility over time. Approved revenue requirement for each utility is typically based on the rate base as 

  847  

approved by the regulator for the respective rate application, but may differ from the rate base indicated above.   
In U.S. dollars. 

(2) 
(3)  Reflects AltaGas’ 65 percent interest in Cook Inlet Natural Gas Storage Alaska LLC.   

Three Months Ended December 31 

The Utilities segment reported normalized EBITDA of $90 million in the fourth quarter of 2017, consistent with the same quarter 
in 2016. Colder weather in Michigan and Alberta, the impact of the rate case increases at ENSTAR, customer growth, and higher 
customer usage were offset by the weaker U.S. dollar, higher operating and administrative expenses, and warmer weather in 
Alaska and Nova Scotia. 

Year Ended December 31 

The Utilities segment reported normalized EBITDA of $298 million for the year ended December 31, 2017, compared to $277 
million  in  2016.  The  increase  was  mainly  due  to  the  impact  of  rate  and  customer  growth,  insurance  proceeds  received  by 

SEMCO’s non-regulated operations, an early termination payment of $2 million from one of SEMCO’s non-regulated customers 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report35 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
moving from a fixed fee to a volumetric based contract, and colder weather in Alaska, Alberta and Michigan. These variances 
were partially offset by the weaker U.S. dollar and higher operating and administrative expenses. 

CORPORATE 

Three Months Ended December 31 

In the Corporate segment, normalized EBITDA for the fourth quarter of 2017 was a loss of $10 million, compared to $8 million in 
2016. The increase was mainly due to higher employee-related costs incurred in the fourth quarter of 2017. 

Year Ended December 31 

In the Corporate segment, normalized EBITDA for the year ended December 31, 2017 was a loss of $25 million, compared to 
$24 million for the year ended December 31, 2016. The increase was mainly due to higher employee, software, and information 
technology related costs, partially offset by lower professional and consulting fees.   

INVESTED CAPITAL 

($ millions) 
Invested capital: 

Property, plant and equipment 
Intangible assets 
Contributions from non-controlling interest 

Invested capital 
Disposals: 

Property, plant and equipment 

Net invested capital 

Gas 

Power 

Utilities 

Three Months Ended 
December 31, 2017 
Total 

Corporate 

$ 

$ 

  65   $ 
  2  
  (5) 
  62  

  — 
  62   $ 

  3   $ 
  — 
  — 
  3  

  — 
  3   $ 

  46   $ 
  1  
  — 
  47  

  — 
  47   $ 

  —  $ 
  1  
  — 
  1  

  — 
  1   $ 

  114  
  4  
  (5) 
  113  

  — 
  113  

($ millions) 
Invested capital: 

Property, plant and equipment 
Intangible assets 

Invested capital 
Disposals: 

Gas 

Power 

Utilities 

$ 

  25   $ 

  51   $ 

  45   $ 

  1  
  26  

  1  
  52  

  1  
  46  

Property, plant and equipment 

Net invested capital 

  — 
  26   $ 

  (1) 
  51   $ 

  — 
  46   $ 

$ 

Three Months Ended 
December 31, 2016 
Total 

Corporate 

  1   $ 
  3  
  4  

  — 
  4   $ 

  122  
  6  
  128  

  (1) 
  127  

During the fourth quarter of 2017, AltaGas increased invested capital by  $113 million, compared to $128 million in the same 
quarter of 2016. The decrease in expenditures for property, plant and equipment in the fourth quarter of 2017 was mainly due to 
the timing of capital spending on certain growth projects. Contributions from non-controlling interest represents Vopak’s share of 
construction costs related to RIPET. 

The  invested  capital  in  the  fourth  quarter  of  2017  included  maintenance  capital  of  $2  million  (2016  -  $4  million)  in  the  Gas 
segment and $2 million (2016 - $4 million) in the Power segment. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report36  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
 
 
($ millions) 
Invested capital: 

Property, plant and equipment 
Intangible assets 
Long-term investments   
Contributions from non-controlling interest 

Invested capital 
Disposals: 

Property, plant and equipment 

Net invested capital 

($ millions) 
Invested capital: 

Property, plant and equipment 
Intangible assets 
Long-term investments   

Invested capital 
Disposals: 

Property, plant and equipment 

Net invested capital 

Year Ended 
December 31, 2017 

Gas 

Power 

Utilities 

Corporate 

Total 

  312   $ 
  3  
  17  
  (17) 
  315  

  19   $ 
  13  
  — 
  — 
  32  

  125   $ 
  2  
  — 
  — 
  127  

  (67) 
  248   $ 

  (2) 
  30   $ 

  (1) 
  126   $ 

  2   $ 
  2  
  — 
  — 
  4  

  — 
  4   $ 

  458  
  20  
  17  
  (17) 
  478  

  (70) 
  408  

Gas 

Power 

Utilities 

Year Ended 
December 31, 2016 
Total 

Corporate 

  287   $ 
  3  
  235  
  525  

  96   $ 
  15  
  — 
  111  

  114   $ 
  2  
  — 
  116  

  (94) 
  431   $ 

  (1) 
  110   $ 

  (1) 
  115   $ 

  4   $ 
  6  
  — 
  10  

  — 
  10   $ 

  501  
  26  
  235  
  762  

  (96) 
  666  

$ 

$ 

$ 

$ 

For the year ended December 31, 2017, AltaGas increased invested capital by $478 million, compared to $762 million in 2016. 
The  actual  net  capital  expenditures  incurred  in  2017  for  property,  plant  and  equipment  and  intangible  assets,  including 
contributions from Vopak, were $461 million as compared to AltaGas’ previous guidance of $500 million to $550 million. The 
lower actual net capital expenditures as compared to guidance was mainly due to timing of spending on certain growth projects 
and the completion of the first train of the North Pine Facility below budget.   

The decrease in expenditures for property, plant, and equipment for the year ended December 31, 2017 was mainly due to costs 
incurred in 2016 to complete the construction of the Townsend Facility as well as the purchase of the remaining 51 percent 
interest in EEEP, partially offset by the costs incurred during 2017 for the construction of Townsend 2A, RIPET, and the first train 
of  the  North  Pine  Facility,  as  well  as  the  costs  incurred  on  the  Gordondale  facility  turnaround.  The  decrease  in  long-term 
investments during the year ended December 31, 2017 was mainly due to the investment made in Tidewater in the first quarter 
of  2016 as  well  as  the  investment  made in  Petrogas  Preferred  Shares  in  the  second  quarter  of  2016,  partially  offset by  the 
contribution of $17 million to AIJVLP in 2017 to fund the scheduled principal and interest repayments of a note payable related to 
AIJVLP’s acquisition of its interest in Petrogas in 2014. The disposals of property, plant and equipment during the year ended 
December 31, 2017 primarily related to the sale of the EDS and JFP transmission assets, while during the year ended December 

31, 2016 the disposals of property, plant and equipment related to the Tidewater Gas Asset Disposition. 

The invested capital for the year ended December 31, 2017 included maintenance capital of $10 million (2016 - $5 million) in the 
Gas segment and $9 million (2016 - $15 million) in the Power segment. The maintenance capital for the Gas segment was mainly 
related to the costs incurred on the Gordondale facility turnaround in the third quarter of 2017 while the maintenance capital for 
the Power segment mainly related to the U.S assets.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report37 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
 
 
  
RISK MANAGEMENT 

AltaGas is exposed to various market risks in the normal course of operations that could impact earnings and cash flows. At 
times, AltaGas will enter into financial derivative contracts to manage exposure to fluctuations in commodity prices and foreign 
exchange rates. The Board of Directors of AltaGas has established a risk management policy for the Corporation establishing 

AltaGas’ risk management control framework. Financial derivative instruments are governed under, and subject to, this policy. 
As at December 31, 2017 and December 31, 2016, the fair values of the Corporation’s derivatives were as follows: 

($ millions) 
Natural gas 
Storage optimization 
NGL frac spread 
Power 
Foreign exchange 
Net derivative asset (liability) 

Commodity Price Contracts 

December 31, 
2017 

December 31, 
2016 
  4  
  (3) 
  (12) 
  30  
  — 
  19  

  6   $ 
  — 
  (24) 
  (1) 
  2  
  (17)  $ 

$ 

$ 

From time to time, the Corporation executes gas, power, and other commodity contracts to manage its asset portfolio and lock in 
margins  from  back-to-back  purchase  and  sale  agreements.  The  fair  value  of  power,  natural  gas,  and  NGL  derivatives  was 
calculated  using  estimated  forward  prices  from  published  sources  for  the  relevant  period.  AltaGas  has  not  elected  hedge 
accounting for any of its commodity derivative contracts currently in place. Changes in the fair value of these derivative contracts 

are recorded in the Consolidated Statements of Income in the period in which the change occurs.   

The Power segment has various fixed price power purchase and sale contracts in the Alberta market, which are expected to be 
settled over the next five years.   

The Corporation also executes fixed-for-floating NGL frac spread swaps to manage its exposure to frac spreads as the financial 
results of several extraction plants are affected by fluctuations in NGL frac spreads. The average indicative spot NGL frac spread 
for the year ended December 31, 2017 was approximately $21/Bbl (2016 - $8/bbl), inclusive of basis differentials. The average 
NGL frac spread realized by AltaGas (based on average spot price and realized hedging losses inclusive of basis differentials) 

for the year ended December 31, 2017 was approximately $13/Bbl (2016 - $7/Bbl). For 2018, AltaGas currently has frac hedges 
in place to hedge approximately 7,500 Bbls/d at an average price of $33/Bbl, excluding basis differentials. 

Foreign Exchange 

AltaGas has foreign operations whereby the functional currency is the U.S. dollar. As a result, the Corporation’s earnings, cash 
flows, and other comprehensive income are exposed to fluctuations resulting from changes in foreign exchange rates. This risk 
is partially mitigated to the extent that AltaGas has U.S. dollar-denominated debt and/or preferred shares outstanding. AltaGas 
may also enter into foreign exchange forward derivatives to manage the risk of fluctuating cash flows due to variations in foreign 

exchange rates.   

As at December 31, 2017, Management designated $nil of outstanding U.S. denominated long-term debt to hedge against the 
currency  translation  effect  of  its  foreign  investments  (December 31,  2016  -  US$301  million).  Designation  of  U.S.  dollar 
denominated long-term debt has the effect of mitigating volatility on net income by offsetting foreign exchange gains and losses 
on  U.S.  dollar  denominated  long-term  debt  and  foreign  net  investment.  For  the  year  ended  December 31,  2017,  AltaGas 
incurred an after-tax unrealized gain of $7 million arising from the translation of debt in other comprehensive income (2016 – 
after-tax unrealized gain of $34 million). 

To  mitigate  the  foreign  exchange  risks  associated  with  the  cash  purchase  price  of  WGL,  AltaGas  has  entered  into  foreign 
currency  option  contracts  with  an  aggregate  notional  value  of  approximately  US$1.2  billion.  These  foreign  currency  option 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report38  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
contracts do not qualify for hedge accounting. Therefore, all changes in fair value are recognized in net income. For the  year 
ended  December  31,  2017,  an  unrealized  loss  of  $34  million  was  recognized  under  “unrealized  gains  and  losses  from  risk 
management contracts” in relation to these contracts (2016 - $nil). 

The Effects of Derivative Instruments on the Consolidated Statements of Income   

The  following  table  presents  the  unrealized  gains  (losses)  on  derivative  instruments  as  recorded  in  the  Corporation’s 
Consolidated Statements of Income: 

($ millions) 
Natural gas 
Storage optimization 
NGL frac spread 
Power 
Heat rate 
Foreign exchange 

Three Months Ended   
December 31  
2016 

2017 

$ 

$ 

  6   $ 
  — 
  (11) 
  (9) 
  — 
  (2) 
  (16)  $ 

  2   $ 
  (2) 
  (9) 
  (3) 
  — 
  — 
  (12)  $ 

2017 

Year Ended   
December 31 
2016 
  — 
  (5) 
  (12) 
  5  
  — 
  1  
  (11) 

  2   $ 
  3  
  (12) 
  (21) 
  — 
  (35) 
  (63)  $ 

Please  refer  to  Note  20  of  the  2017  Annual  Consolidated  Financial  Statements  for  further  details  regarding  AltaGas’  risk 
management activities.   

Corporation Risks   

AltaGas manages its exposure to risks using the strategies outlined in the following table: 

Risks 
Operational 

Construction 

Liquidity 

Foreign 
exchange 

Interest rates 

 
 
 
 
 

 

 
 
 
 
 
 
 
 
 

 

 

 

 
 
 
 
 

Strategies and Organizational Capability to Mitigate Risks 

 Maintain diversification across Gas, Power and Utilities 
 Acquire large working interests to control and optimize operations and maximize efficiencies 
 Contractual provisions often provide for recovery of operating costs 
 Centralized procurement strategy to reduce costs 
 Maintain control over operational decisions, operating costs and capital expenditures by operating certain 
jointly-owned facilities 
 Maintain standard operating practices, assess and document employee competency, and maintain formal 
inspection, maintenance, safety and environmental programs 
 Purchase business interruption insurance 
 Fixed price operating and maintenance contracts with equipment manufacturers 
 Hedging strategy used to balance price and operating risk 
 Major projects group manages and monitors significant construction projects 
 Strong in-house project control and management framework 
 Appropriate internal management structure and processes 
 Engage specialists in designing and building major projects 
 Contractual arrangements to mitigate cost and schedule risks 
 Forecast cash flow on a continuous basis to maintain adequate cash balances to fund financial obligations 
as they come due and to support business operations 
 Maintain financial flexibility and liquidity needs through a variety of sources including internally-generated 
cash flows, DRIP, access to credit facilities, and long-term debt and equity issuances 
 Execute financing plans and strategies to maintain and improve credit ratings to minimize financing costs 
and support ready access to capital markets 
Issue long term debt and preferred shares in U.S. dollars which hedge the Corporation’s net investment in 
U.S. subsidiaries 
 Employ hedging practices such as entering foreign exchange forward contracts 
 Optimize financing plans to maintain and improve credit ratings to minimize interest costs 
 Monitor and proactively manage the Corporation’s debt maturity profile 
 Employ hedging practices such as entering into interest rate swaps 
 Maintain financial flexibility and access to multiple credit facilities and continually monitor covenant 
compliance 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report39 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
Risks 
Long-term 
natural gas 
volume 
declines 

Volume of 
power 
generated 

Commodity 
price 

Counterparty 

Weather 

Regulatory and 
Stakeholder 

Environment 
and safety 

Labour 
relations 
Cybersecurity 

Litigation 

Strategies and Organizational Capability to Mitigate Risks 
 Long-term contracts such as take-or-pay, area of mutual interest, geographic franchise with economic out 
Increase market share by expanding existing facilities or acquiring or constructing new facilities 
Increase geographic and customer diversity to reduce exposure to any one individual customer or area of 
the WCSB 
 Strategically locate facilities to provide secure access to gas supply 
 Capitalize on integrated aspects of AltaGas' business to increase volumes through its processing facilities 
 PPAs for the Blythe, San Joaquin, Ripon, and Brush facilities include specified target availability levels and 
pay fixed capacity payments upon achieving target availability, and as a result, volumes of power sold have 
a minimal impact on the Corporation 
 Diversification of fuel sources and geography 
 Hedging strategy to balance price and operating risk 
 Undertake extensive studies to support investment decisions 
 Contracting terms, processing, storage and transportation fees independent of commodity prices through 
fee-for-service, take-or-pay, fixed-fee or cost-of-service provisions 
 Hedging strategy with hedge targets approved by the Board of Directors 
 Monitor hedge transactions through Risk Management Committee 
 AltaGas' Commodity Risk Policy prohibits transactions for speculative purposes 
 Employ hedging practices to reduce exposure to commodity prices and volatility and lock in margins when 
the opportunity arises to increase profitability and reduce earnings volatility 
 Employ strong systems and processes for monitoring and reporting compliance with the Commodity Risk 
Policy 
In-depth knowledge and experience of transportation systems, natural gas, NGL and power markets where 
AltaGas operates 
 Hedge power costs 
 Direct marketing to end-use commercial and industrial customers 
 Execute long-term inflation adjusted electricity purchase arrangements with power buyers 
 Strong credit policies and procedures 
 Continuous review of counterparty creditworthiness 
 Establish credit thresholds using appropriate credit metrics 
 Closely monitor exposures and impact of price shocks on liquidity 
 Build a diverse customer and supplier base 
 Active accounts receivable monitoring and collections processes in place 
 Credit terms included in contracts 
 Anticipated volumes are determined based on the 20-year rolling average for weather for the Canadian 
utilities and 15 years for SEMCO Gas and 10 years for ENSTAR 
 PNG has a weather normalization account for residential and small commercial customers 
 Regulatory and commercial personnel monitor and manage regulatory issues 
 Proactive regulatory and government relations group, strong working relationships with Aboriginal peoples, 
stakeholders, and regulators 
 Build risk mitigation into contracts where appropriate 
 Skilled regulatory department retained 
 Use of expert third parties when needed 
 Strong safety and environmental management systems 
 Continuous process improvement strategy employed 
 Focus on mitigating the impact of the climate change regulations 
 Zero tolerance safety policies for staff and contractors and reviews of past safety practices for contractors 
 Purchase and maintain general liability and business interruption insurance 
 Pipeline and asset integrity programs are in place 
 Maintain access to strong labour markets to attract qualified talent 
 Positive employee relations to retain existing talent and maintain strong relations with unions 
 Continuous monitoring of the Corporations infrastructure, technologies and data 
 Ongoing cybersecurity communications and training to staff 
 Conducting third-party vulnerability and cybersecurity tests 
 Corporate threat detection and incident response protocols 
 Proactive management of lawsuits and other claims 
 Continuous monitoring of defense and settlement costs of lawsuits and claims 
 Strong in-house legal department 
 Use of expert third parties when needed 

 
 
 

 
 
 

 
 
 
 

 
 
 
 

 

 

 
 
 
 
 
 
 
 
 
 
 

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report40  
 
 
 
 
 
 
 
 
 

Risks 
External 
Stakeholder 
Relations 

 
 
Risks related to   
 
 
 
 
 

the WGL 
Acquisition 

 
 

 

 
 

 

Strategies and Organizational Capability to Mitigate Risks 
 Proactive stakeholder relations and communications groups, strong working relationships with Aboriginal 
peoples, stakeholders, and regulators 
 Strong commitment to creating social value 
 Strong safety and environmental management systems 
 WGL shareholder approval received on May 10, 2017 
 FERC approval received on July 6, 2017 
 CFIUS approval received on July 28, 2017 
 Waiting period for HSR Act expired on July 17, 2017 
 Virginia regulatory approval received on October 20, 2017 
 Announced settlement agreement with key stakeholders in Maryland on December 4, 2017. PSC of MD 
regulatory outcome expected on or before April 4, 2018 
 PSC of DC regulatory outcome expected in first half of 2018 
 Optimize the WGL financing plan to maintain and improve credit ratings to minimize interest costs, which 
includes proceeds from the Subscription Receipts as well as up to US$3 billion available under fully 
committed bridge facility, which can be drawn at the time of closing 
 Execution of foreign currency option contracts with an aggregate notional value of approximately US$1.2 
billion to mitigate the foreign exchange risks associated with the cash purchase price of WGL 
 AltaGas and WGL have worked constructively with regulators, community groups and local leaders 
 AltaGas  has  established  a  cross-functional  WGL  regulatory  team  focused  on  achieving  regulatory 
approvals 
 AltaGas has established a cross-functional WGL integration team focused on effectively integrating WGL 
into AltaGas its current operations 

LIQUIDITY 

($ millions) 
Cash from operations 
Investing activities 
Financing activities 
Increase (decrease) in cash and cash equivalents 

Cash from Operations 

$ 

$ 

Year Ended   
December 31 
2016 
  456  
  (752) 
  21  
  (275) 

2017 
  545   $ 
  (499) 
  (38) 

  8   $ 

Cash  from  operations  increased  by  $89  million  for  the  year  ended  December 31,  2017  compared  to  2016  primarily  due  to 
favorable variance in net change in operating assets and liabilities. The favorable variance in net change in operating assets and 
liabilities was primarily due to higher cash inflow in 2017 relating to changes in inventory and accounts payable at the Utilities due 

to weather, changes in accounts payable due to the pending WGL Acquisition and the first train of the North Pine Facility being 
commissioned in December 2017, and reimbursement for refundable payments. These increases in cash flow were partially 
offset by changes in accounts receivable due to increased NGL marketing activities and higher revenues compared to 2016, and 
higher prepayments on long-term service agreements related to RIPET.   

Working Capital 

($ millions except current ratio) 
Current assets 
Current liabilities 
Working capital (deficiency) 
Working capital ratio 

$ 

December 31, 
2017 
  702   $ 
  815  
  (113)  $ 
  0.86   

December 31, 
2016 
  739  
  996  
  (257) 
  0.74  

$ 

The  improvement  in  the  working  capital  ratio  was  primarily  due  to  a  lower  current  portion  of  long-term  debt  outstanding,  a 

decrease in short-term debt, and an increase in accounts receivable as compared to December 31, 2016, partially offset by a 
decrease in inventory, increase in accounts payable and accrued liabilities as well as the completion of the sale of the EDS and 
JFP transmission assets to Nova Chemicals, which were previously classified as assets held for sale. AltaGas’ working capital 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report41 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
will fluctuate in the normal course of business and the working capital deficiency will be funded using cash flow from operations, 
DRIP and available credit facilities as required. 

Investing Activities 

Cash used in investing activities for the year ended December 31, 2017 was $499 million, compared to $752 million in 2016. 

Investing  activities  for  the  year  ended  December 31,  2017  primarily  included  expenditures  of  approximately  $473  million  for 
property,  plant,  and  equipment  and  $20  million  for  intangible  assets,  approximately  $36  million  for  derivative  contracts, 
approximately $17 million of contributions to AltaGas’ equity investments, and a $13 million loan to Petrogas under the $100 
million interest bearing secured loan facility provided to Petrogas, partially offset by cash proceeds of approximately $71 million, 
net of transaction costs, primarily from the sale of the EDS and JFP transmission assets. Investing activities for the year ended 
December 31, 2016 primarily included approximately $507 million in additions to property, plant, and equipment, AltaGas’ $150 
million investment in Petrogas Preferred Shares, a $63 million loan to Petrogas under the $100 million interest bearing secured 
loan facility provided to Petrogas, approximately $24 million in additions to intangible assets, approximately $21 million for the 

purchase of EEEP, approximately $20 million of contributions to AltaGas’ equity investments, partially offset by cash inflow of 
approximately $32 million, net of transaction costs, primarily from the Tidewater Gas Asset Disposition. 

Financing Activities 

Cash  used  in  financing  activities  for  the  year  ended  December 31,  2017  was  $38  million,  compared  to  cash  from  financing 
activities  of  $21  million  in  2016.  Financing  activities  for  the  year  ended  December 31,  2017  were  primarily  comprised  of 
repayments of long-term debt and short-term debt of $862 million and $74 million, respectively, partially offset by net proceeds 
from the issuance of preferred shares of $293 million and common shares of $242 million (mainly from common shares issued 
through DRIP), net proceeds from the issuance of MTNs of $447 million, borrowings under the credit facilities of $311 million, and 

proceeds from the sale of a non-controlling interest in RIPET to Vopak of $24 million.  Financing activities for the year ended 
December 31, 2016 were primarily comprised of net proceeds from the issuance of common shares of $604 million (including 
common shares issued through the DRIP), net proceeds from the issuance of MTNs of $348 million, and borrowings from credit 
facilities of $327 million, partially offset by the repayment of $884 million of long-term debt. Total dividends paid to common and 
preferred shareholders of AltaGas for the year ended December 31, 2017 were $421 million (2016 - $365 million), of which $236 
million was reinvested through DRIP (2016 - $174 million). The increase in dividends paid was due to more common shares and 
preferred  shares  outstanding  and  dividend  increases  on  common  shares  declared  in  2017  and  2016.  The  increase  in  the 
amounts reinvested through the DRIP for the year ended December 31, 2017 compared to 2016 was due to the implementation 
of  the  Premium  DividendTM  component  of  the  plan  effective  May  17,  2016.  Please  refer  to  Note  21  of  the  2017  Annual 
Consolidated Financial Statements for more information about the DRIP. 

CAPITAL RESOURCES 

AltaGas' objective for managing capital is to maintain its investment grade credit ratings, ensure adequate liquidity, maximize the 
profitability  of  its  existing  assets  and  grow  its  energy  infrastructure  to  create  long-term  value  and  enhance  returns  for  its 
investors.  AltaGas' capital  structure  is  comprised  of shareholders'  equity  (including  non-controlling interests), short-term  and 
long-term debt (including current portion) less cash and cash equivalents. 

TM Denotes trademark of Canaccord Genuity Corp. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report42  
 
 
 
 
 
                                                           
The use of debt or equity funding is based on AltaGas’ capital structure, which is determined by considering the norms and risks 
associated with operations and cash flow stability and sustainability. 

($ millions) 

Short-term debt 
Current portion of long-term debt 
Long-term debt(1) 

Total debt  

Less: cash and cash equivalents 

Net debt 
Shareholders' equity 
Non-controlling interests 
Total capitalization 

Net debt to total capitalization (%) 
(1)  Net of debt issuance costs of $14 million as at December 31, 2017 (December 31, 2016 - $14 million).     

December 31, 
2017 
  47   $ 

$ 

  189  
  3,437  

December 31, 
2016 
  129  
  383  
  3,367  

$ 

$ 

  3,673  
  (27) 
  3,646   $ 
  4,573  
  66  
  8,285   $ 

  3,879  
  (19) 
  3,860  
  4,581  
  35  
  8,476  

  44  

  46  

On  February  22,  2017,  AltaGas  closed  a  public  offering  of  12,000,000  cumulative  5-year  minimum  rate  reset  redeemable 
preferred shares, Series K, at a price of $25 per Series K preferred share for aggregate gross proceeds of $300 million. Net 
proceeds were used to reduce existing indebtedness and for general corporate purposes. 

On October 4, 2017, AltaGas issued an aggregate of $450 million of MTNs consisting of $200 million of MTNs with a coupon rate 
of 3.98 percent maturing on October 4, 2027, and $250 million of MTNs with a coupon rate of 4.99 percent maturing on October 

4,  2047.  The  net  proceeds  were  used  to  pay  down  existing  indebtedness  including,  without  limitations,  indebtedness  under 
AltaGas’ credit facility and the repayment at maturity of other outstanding debt obligations, and for general corporate purposes.   

As at December 31, 2017, AltaGas’ total debt primarily consisted of outstanding MTNs of $2.9 billion (December 31, 2016 - $2.8 
billion),  PNG  debenture  notes  of  $34  million  (December 31,  2016  -  $43  million),  SEMCO  long-term  debt  of  $462  million 
(December 31, 2016 - $500 million) and $260 million drawn under the bank credit facilities (December 31, 2016 - $501 million). In 
addition, AltaGas had $120 million of letters of credit (December 31, 2016 - $161 million) outstanding. 

As at December 31, 2017, AltaGas’ total market capitalization was approximately $5.0 billion based on approximately 175 million 

common shares outstanding and a closing trading price on December 31, 2017 of $28.62 per common share. 

AltaGas'  earnings  interest  coverage  for  the  rolling  12  months  ended  December 31,  2017  was  1.3  times  (12  months  ended 
December 31, 2016 – 2.4 times).   

Credit Facilities 

Drawn at 

Drawn at 

Borrowing 
capacity 

($ millions) 
Demand operating facilities 
Extendible revolving letter of credit facility 
Letter of credit demand facility   
PNG operating facility 
AltaGas Ltd. revolving credit facility (1)   
AltaGas Ltd. revolving US$ credit facility (1) (2) 
SEMCO Energy US$ unsecured credit facility (1) (2)   

December 31, 
2016 
  4  
  49  
  104  
  10  
  378  
  — 
  117  
  662  
(1)  Amount drawn at December 31, 2017 converted at the month-end rate of 1 U.S. dollar = 1.2545 Canadian dollar (December 31, 2016 - 1 U.S. dollar = 1.3427 

  150  
  150  
  25  
  1,400  
  376  
  188  
  2,359   $ 

  41  
  71  
  13  
  219  
  — 
  32  
  380   $ 

December 31, 
2017 

  70   $ 

  4   $ 

$ 

$ 

Canadian dollar). 

(2)  Borrowing capacity was converted at the December 31, 2017 U.S./Canadian dollar month-end exchange rate. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report43 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
All of the borrowing facilities have covenants customary for these types of facilities, which must be met at each quarter end. 
AltaGas and its subsidiaries have been in compliance with all financial covenants each quarter since the establishment of the 
facilities.   

The following table summarizes the Corporation's primary financial covenants as defined by the credit facility agreements:   

Ratios   
Bank debt-to-capitalization(1)   
Bank EBITDA-to-interest expense (1) (2)   
Bank debt-to-capitalization (SEMCO)(3) 
Bank EBITDA-to-interest expense (SEMCO)(3) 
(1)  Calculated in accordance with the Corporation’s credit facility agreement, which is available on SEDAR at www.sedar.com. 
(2)  Estimated, subject to final adjustments.   
(3)  Bank EBITDA-to-interest expense (SEMCO) and Bank debt-to-capitalization (SEMCO) are calculated based on SEMCO’s consolidated financial statements 

not less than 2.5x 
not greater than 60 percent 

not less than 2.25x 

3.9 
39.7% 

7.6 

Debt covenant   
requirements 
not greater than 65 percent 

As at 
December 31, 2017 
43.8% 

and are calculated similar to Bank debt-to-capitalization and Bank EBITDA-to-interest expense.   

On September 7, 2017, a $5 billion base shelf prospectus was filed. The purpose of the base shelf prospectus is to facilitate 
timely offerings of certain types of future public debt and/or equity issuances during the 25-month period that the base shelf 
prospectus  remains  effective.  As  at  December  31,  2017,  approximately  $4.6  billion  was  available  under  the  base  shelf 
prospectus.  

CONTRACTUAL OBLIGATIONS 

December 31, 2017 

Payments Due by Period 

($ millions) 
Short-term debt (1) 
Long-term debt (1) 
Operating leases   
Purchase obligations   
Capital project commitments 
Pension plan and retiree benefits (2) 
Other liabilities 
Total contractual obligations (3) 

Total 
  47   $ 

  3,640  
  55  
  2,190  
  105  
  18  
  169  
  6,224   $ 

$ 

$ 

Less than 
1 year 

1 - 3 
years 

4 - 5 
years 

  47   $ 
  189  
  9  
  377  
  105  
  18  
  22  
  767   $ 

  —  $ 

  —  $ 

  1,009  
  24  
  742  
  — 
  — 
  26  
  1,801   $ 

  364  
  10  
  638  
  — 
  — 
  21  
  1,033   $ 

After 5 
years 
  — 
  2,078  
  12  
  433  
  — 
  — 
  100  
  2,623  

(1)  Excludes interest payments and deferred financing costs.     

(2)  Assumes only required payments will be made into the pension plans in 2018. Contributions are made in accordance with independent actuarial valuations.   
(3)  U.S. dollar commitments have been converted to Canadian dollar using the December 31, 2017 exchange rate.     

RELATED PARTY TRANSACTIONS 

In the normal course of business, AltaGas transacts with its subsidiaries, affiliates and joint ventures. Refer  to Note 27 of the 

2017 Annual Consolidated Financial Statements for the amounts due to or from related parties on the Consolidated Balance 
Sheets and the classification of revenue, income, and expenses in the Consolidated Statements of Income. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report44  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
CREDIT RATINGS   

On November 6, 2017, DBRS Limited (DBRS) maintained its status of Under Review with Developing Implications. 

On February 15, 2017, Standard & Poor’s (S&P) commenced rating of the Series K Preferred Shares with a rating of P-3 (High). 

On February 17, 2017, DBRS commenced rating of the Series K Preferred Shares with a rating of Pfd-3 Under Review with 
Developing Implications.   

On January 26, 2017, S&P reaffirmed the BBB with a Negative Outlook and P-3 (High) ratings for AltaGas. 

On January 26, 2017, DBRS revised the BBB and the Pfd-3 rating of AltaGas to Under Review with Developing Implications. 

According to the DBRS rating system, debt securities rated BBB are of adequate credit quality. The capacity for the payment of 
financial obligations is considered acceptable, but the entity may be vulnerable to future events, which reduce the strength of the 
entity and its rated securities. “High” or “low” grades are used to indicate the relative standing within a particular rating category. 
A Pfd-3 rating by DBRS is the third highest of six categories granted by DBRS. According to the DBRS rating system, preferred 
shares rated Pfd-3 are of adequate credit quality. While protection of dividends and principal is still considered acceptable, the 
issuing entity is more susceptible to adverse changes in financial and economic conditions, and there may be other adversities 
present which detract from debt protection. Pfd-3 ratings normally correspond with companies whose bonds are rated in the 
higher end of the BBB category. “High” or “low” grades are used to indicate the relative standing within a rating category. The 
absence of either a “high” or “low” designation indicates the rating is in the middle of the category.   

The ratings action “Under Review” is applied, among other things, when a significant event occurs that directly impacts the credit 
quality of a particular entity or group of entities and there is uncertainty regarding the outcome of the event such that DBRS is 
unable to provide an objective, forward-looking opinion in a timely fashion. A rating that is “Under Review” remains outstanding; 
however, this status acts as a warning signal indicating that the outstanding rating may no longer be appropriate. When a rating 
is placed “Under Review”, DBRS will generally provide initial guidance as to the opinion of DBRS by noting whether the Under 
Review action has positive (Under Review – Positive), negative (Under Review – Negative) or developing implications (Under 
Review – Developing). These qualifications indicate the preliminary evaluation of DBRS of the impact on the credit quality of the 
security or issuer; however as situations and potential rating implications may vary, its final rating conclusion may depart from the 

preliminary assessment. DBRS will further review the Corporation’s ratings as more information becomes available and aims to 
resolve the Under Review status of the ratings once financing details are known and the WGL Acquisition has closed. 

According  to  the  S&P  rating  system,  an  obligation  rated  BBB  exhibits  adequate  protection  parameters.  However,  adverse 
economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial 
commitment on the obligation. The ratings from AA to CCC may be modified by the addition of a plus (+) or minus (-) sign to show 
relative standing within the major rating categories. A P-3 rating by S&P is the third highest of eight categories granted by S&P. 
According to the S&P rating system, while securities rated P-3 are regarded as having significant speculative characteristics, 

they are less vulnerable to non-payment than other speculative issues. However, it faces ongoing uncertainties or exposure to 
adverse business, financial, or economic conditions which could lead to the obligor’s inadequate capacity to meet its financial 
commitment on the obligation. The ratings from P-1 to P-5 may be modified by “high” and “low” grades which indicate relative 
standing within the major rating categories.   

The  credit  ratings  accorded  to  the  securities  by  the  rating  agencies  are  not  recommendations  to  purchase,  hold  or  sell  the 
securities  in  as much  as  such  ratings  do  not  comment as  to  market  price  or  suitability  for  a  particular  investor.  There  is  no 
assurance that any rating will remain in effect for any given period of time or that any rating will not be revised or withdrawn 
entirely by a rating agency in the future if, in its judgment, circumstances so warrant. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report45 
 
 
 
 
 
 
 
 
  
SHARE INFORMATION 

Issued and outstanding 
Common shares 
Preferred Shares 

Series A 
Series B 
Series C 
Series E 
Series G 
Series I 
Series K 

Subscription Receipts 
Issued 
Share options 
Share options exercisable 

DIVIDENDS 

As at February 23, 2018 

176,918,328 

5,511,220 
2,488,780 
8,000,000 
8,000,000 
8,000,000 
8,000,000 
12,000,000 
84,510,000 

4,507,136 
3,304,697 

AltaGas declares and pays a monthly dividend to its common shareholders. Dividends on preferred shares are paid quarterly. 
Dividends are at the discretion of the Board of Directors and dividend levels are reviewed periodically, giving consideration to the 
ongoing  sustainable  cash  flow  from  operating  activities,  maintenance  and  growth  capital  expenditures,  and  debt  repayment 

requirements of AltaGas.   

On February 22, 2017, AltaGas closed a public offering of the Series K preferred shares. Holders of the Series K preferred 
shares will be entitled to receive a cumulative quarterly fixed dividend for the initial period ending on but excluding March 31, 
2022 at an annual rate of 5.0 percent, payable on the last day of March, June, September and December, as and when declared 
by the Board of Directors of AltaGas. The first quarterly dividend payment was paid on June 30, 2017 in the amount of $0.4384 
per Series K preferred share. Unless otherwise redeemed or converted pursuant to the terms of the Series K preferred shares, 
the dividend rate will reset on March 31, 2022 and every five years thereafter at a rate equal to the sum of the then five-year 

Government of Canada bond yield plus 3.8 percent, provided that, in any event, such rate shall not be less than 5.0 percent per 
annum.   

On September 30, 2017, the annual fixed dividend rate for the Series C preferred shares was reset to 5.29 percent. The dividend 
rate will reset on September 30, 2022 and every five years thereafter at a rate equal to the sum of the then five-year United 
States Government bond yield plus 3.58 percent. 

On October 18, 2017, the Board of Directors approved an increase in the monthly dividend by $0.0075 per common share to 
$0.1825 ($2.19 per common share annualized) effective for the November 2017 dividend, a 4.3 percent increase. 

The following table summarizes AltaGas’ dividend declaration history: 

Dividends 
Year ended December 31 
($ per common share) 
First quarter   
Second quarter   
Third quarter 
Fourth quarter 
Total 

2017 

$ 

$ 

  0.525000   $ 
  0.525000  
  0.525000  
  0.540000  
  2.115000   $ 

2016 
  0.495000  
  0.495000  
  0.515000  
  0.525000  
  2.030000  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report46  
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Series A Preferred Share Dividends 
Year ended December 31 
($ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

Series B Preferred Share Dividends 
Year ended December 31 
($ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

Series C Preferred Share Dividends 
Year ended December 31 
(US$ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

Series E Preferred Share Dividends 
Year ended December 31 
($ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

Series G Preferred Share Dividends 
Year ended December 31 
($ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

Series I Preferred Share Dividends 
Year ended December 31 
($ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

2017 

  0.211250   $ 
  0.211250  
  0.211250  
  0.211250  
  0.845000   $ 

2016 
  0.211250  
  0.211250  
  0.211250  
  0.211250  
  0.845000  

2017 

  0.195410   $ 
  0.195710  
  0.201010  
  0.214250  
  0.806380   $ 

2016 
  0.192690  
  0.193930  
  0.201090  
  0.199210  
  0.786920  

2017 

  0.275000   $ 
  0.275000  
  0.275000  
  0.330625  
  1.155625   $ 

2016 
  0.275000  
  0.275000  
  0.275000  
  0.275000  
  1.100000  

2017 

  0.312500   $ 
  0.312500  
  0.312500  
  0.312500  
  1.250000   $ 

2016 
  0.312500  
  0.312500  
  0.312500  
  0.312500  
  1.250000  

2017 

  0.296875   $ 
  0.296875  
  0.296875  
  0.296875  
  1.187500   $ 

2016 
  0.296875  
  0.296875  
  0.296875  
  0.296875  
  1.187500  

2017 

  0.328125   $ 
  0.328125  
  0.328125  
  0.328125  
  1.312500   $ 

2016 
  0.463870  
  0.328125  
  0.328125  
  0.328125  
  1.448245  

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report47 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
Series K Preferred Share Dividends 
Year ended December 31 
($ per preferred share) 
First quarter   
Second quarter   
Third quarter   
Fourth quarter 
Total 

CRITICAL ACCOUNTING ESTIMATES 

2017 

  —  $ 

  0.438400  
  0.312500  
  0.312500  
  1.063400   $ 

$ 

$ 

2016 
  — 
  — 
  — 
  — 
  — 

Since  a  determination of the value  of many  assets,  liabilities,  revenues  and expenses  is dependent  upon future  events,  the 
preparation of AltaGas' Consolidated Financial Statements requires the use of estimates and assumptions that have been made 
using careful judgment. AltaGas’ significant accounting policies  are contained in the notes to the 2017 Annual Consolidated 
Financial  Statements.  Certain  of  these  policies  involve  critical  accounting  estimates  as  a  result  of  the  requirement  to  make 
particularly  subjective  or  complex  judgments  about  matters  that  are  inherently  uncertain,  and  because  of  the  likelihood  that 
materially different amounts could be reported under different conditions or using different assumptions. 

Significant estimates and judgments made by Management in the preparation of the Consolidated Financial Statements are 
outlined below:   

Regulatory Assets and Liabilities 

SEMCO  Gas,  ENSTAR  and CINGSA,  AUI,  Heritage  Gas, and  PNG  engage  in  the  delivery  and sale  of  natural  gas and  are 
regulated by the following regulatory agencies: MPSC, RCA, AUC, NSUARB and BCUC, respectively. 

The  regulatory  agencies  exercise  statutory  authority  over  matters  such  as  tariffs,  rates,  construction,  operations,  financing, 

returns and certain contracts with customers. In order to recognize the economic effects of the actions and decisions of the 
regulators, the timing of recognition of certain assets, liabilities, revenues and expenses as a result of regulation may differ from 
that otherwise expected using U.S. GAAP for entities not subject to rate regulation.   

Regulatory assets represent future revenues associated with certain costs incurred in the current period or in prior periods that 
are expected to be recovered from customers in future periods through the rate-setting process. Regulatory liabilities represent 
future reductions or limitations of increases in revenue associated with amounts that are expected to be refunded to customers 
through the rate-setting process. 

Asset Impairment 

AltaGas reviews long-lived assets and intangible assets with finite lives whenever events or changes in circumstances indicate 
that  the  carrying  value  of  such  assets  may  not  be  recoverable.  Recoverability  is  determined  based  on  an  estimate  of 
undiscounted cash flows, and measurement of an impairment loss is determined based on the fair value of the assets. The 
determination of fair value requires Management to make assumptions about future cash inflows and outflows over the life of an 
asset.  Any  changes  to  the  assumptions  used  for  the  future  cash  flow  could  result  in  revisions  to  the  evaluation  of  the 
recoverability of the long-lived assets or intangible assets and the recognition of an impairment loss in the Consolidated Financial 
Statements.     

AltaGas also tests goodwill for impairment annually or more frequently if events or changes in circumstances indicate that it is 
more likely than not that the fair value of a reporting unit is less than its carrying value. The Corporation has the option  to first 
assess qualitative factors to determine whether it is necessary to perform the two-step goodwill impairment test. If the two-step 
goodwill impairment test is performed, the first step is to compare the fair value of the Corporation’s reporting units and to the 
carrying values. If the carrying value of a reporting unit, including allocated goodwill exceeds its fair value, goodwill impairment is 
measured as the excess of the carrying value amount of the reporting unit’s allocated goodwill over the implied fair value of the 
goodwill.  The  fair  value  used in  the  quantitative impairment  test of goodwill  requires  estimating future cash flows  as  well  as 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report48  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
appropriate discount rates. AltaGas has assessed goodwill for impairment as at December 31, 2017 and determined that no 
write-down was required.   

Asset Retirement Obligations   

AltaGas records liabilities relating to asset retirement obligations when there is a legal obligation. In estimating the obligations, 

Management  is  required  to  make  assumptions  regarding  inflation  and  discount  rates,  ultimate  amounts  and  timing  of 
settlements, and expected changes in environmental laws and regulation. A change in any of these estimates could have a 
material impact on AltaGas' Consolidated Financial Statements. 

Income Taxes 

The Corporation is subject to the provisions of the Income Tax Act (Canada) for purposes of determining the amount of income 
that will be subject to tax in Canada and the Internal Revenue Code (U.S.) for the purposes of determining the amount of income 
that will be subject to tax in the United States. The determination of AltaGas’ and its subsidiaries’ provision for income taxes 

requires the application of these complex rules.   

Substantial deferred income tax assets and liabilities are recognized in the Consolidated Financial Statements. The recognition 
of  deferred  tax  assets  depends  on  the  assumption  that  future  earnings  will  be  sufficient  to  realize  the  deferred  benefit.  A 
valuation allowance is recorded against deferred tax assets where all or a portion of that asset is not expected to be realized. The 
amount of the deferred tax asset or liability recorded is based on Management’s best estimate of the timing of the realization of 
the assets or liabilities.   

If Management’s interpretation of tax legislation differs from that of tax authorities, or if timing of reversals is not as anticipated, 

the  provision  for  income  taxes  could  increase  or  decrease in  future  periods.  See  Note  17  to  the 2017  Annual  Consolidated 
Financial Statements. 

Pension Plans and Post-Retirement Benefits 

The determination of pension plan obligations and expense is based on a number of actuarial assumptions. Critical assumptions 
include  the  expected  long-term  rate-of-return  on  plan  assets,  the  discount  rate  applied  to  pension  plan  obligations,  and  the 
expected rate of compensation increase. For post-retirement benefit plans, which provide for certain health care premiums and 
life  insurance  benefits  for  qualifying  retired  employees  and  which  are  not  funded,  critical  assumptions  in  determining 
post-retirement obligations and expense are the discount rate and the assumed health care cost trend rates. Notes 2 and 25 to 

the 2017 Annual Consolidated Financial Statements include information on the assumptions used for the purposes of recording 
the funding status of the plans and the associated expenses. 

Depreciation and Amortization   

Depreciation and amortization of property, plant, and equipment and intangible assets are based on Management’s judgment of 
the estimated useful life of the assets. When it is determined that assigned asset lives do not reflect the estimated remaining 
period of benefit, prospective changes are made to the depreciable lives of those assets. For regulated entities, amortization 
rates are generally prescribed by the applicable regulatory authority. There are a number of uncertainties inherent in estimating 

the remaining useful life of certain assets and changes in assumptions could result in material adjustments to the amount of 
amortization that AltaGas recognizes from period to period.   

Loss Contingencies 

AltaGas and its subsidiaries are subject to various legal claims and actions arising in the normal course of business. Liabilities for 
loss contingencies are determined on a case-by-case basis and are accrued for when it is probable that a liability has been 
incurred and the amount can be reasonably estimated. Significant judgement is required to determine the probability of having 
incurred the liability and the estimated amount. Estimates are reviewed regularly and updated as new information is received.   
As at December 31, 2017, no provisions on loss contingencies have been recorded by the Corporation. However, due to the 

inherent uncertainty of the litigation process, the resolution of any particular contingencies could have a material adverse effect 
on the Corporation’s results of operations or financial position.     

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report49 
 
 
 
 
 
 
 
Fair Value of Financial Instruments 

Fair value is defined as the amount of consideration that would be agreed upon in an arms-length transaction, other than a forced 
sale or liquidation, between knowledgeable, willing parties who are under no compulsion to act. The best evidence of fair value is 
a quoted bid or ask price, as appropriate, in an active market. Fair value based on unadjusted quoted prices in an active market 
requires  minimal  judgment  by  Management.  Where  bid  or  ask  prices  in  an  active  market  are  not  available,  Management’s 

judgment  on  valuation  inputs  is  necessary  to  determine  fair  value.  AltaGas  uses  over-the-counter  derivative  instruments  to 
manage fluctuations in commodity prices and foreign exchange rates. AltaGas estimates forward prices based on published 
sources  adjusted  for  factors  specific  to  the  asset  or  liability,  including  basis  and  location  differentials,  discount  rates,  and 
currency exchange. The forward curves used to mark these derivative instruments to market are vetted against public sources. 
Where  observable  market  data  is  not  available,  AltaGas  uses  valuation  techniques  which  require  significant  judgment  by 
Management. Changes in estimates and assumptions about these inputs could affect the reported fair value. 

ADOPTION OF NEW ACCOUNTING STANDARDS 

Effective  January  1,  2017,  AltaGas  adopted  the  following  Financial  Accounting  Standards  Board  (FASB)  issued  Accounting 
Standards Updates (ASU): 

  ASU No. 2015-11 “Inventory: Simplifying the Measurement of Inventory”. The amendments in this ASU require an entity 
to measure inventory at the lower of cost and net realizable value. The adoption of this ASU did not have a material 
impact on AltaGas' consolidated financial statements; 

  ASU No. 2016-05 “Derivatives and Hedging: Effect of Derivative Contract Novations on Existing Hedge Accounting 
Relationships”. The amendments in this ASU clarify that a change in the counterparty to a derivative instrument that has 
been designated as the hedging instrument under Topic 815 does not, in and of itself, require de-designation of that 
hedging relationship provided that all other hedge accounting criteria continue to be met. The adoption of this ASU did 
not have a material impact on AltaGas' consolidated financial statements; 

  ASU No. 2016-06, “Derivatives and Hedging: Contingent Put and Call Options in Debt Instruments”. The amendments 
in this ASU clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment 

of principal on debt instruments are clearly and closely related to their debt hosts. The adoption of this ASU did not have 
a material impact on AltaGas' consolidated financial statements; 

  ASU  No.  2016-07  “Investments  -  Equity  Method  and  Joint  Ventures  Investments:  Simplifying  the  Transition  to  the 
Equity  Method  of  Accounting”.  The  amendments in  this  ASU  eliminate  the  requirement  to  retrospectively  apply  the 
equity method as a result of an increase in the level of ownership interest or degree of influence. The adoption of this 
ASU did not have a material impact on AltaGas' consolidated financial statements; and 

  ASU  No.  2016-09  “Stock  Compensation:  Improvements  to  Employee  Share-Based  Payment  Accounting”.  The 
amendments in this ASU focus on simplifying several areas of the accounting for share-based payment transactions, 
including  the  accounting  for  income  taxes,  forfeitures,  and  statutory  withholding  requirements,  as  well  as  the 
classification on the statement of cash flow. Upon adoption of this ASU, AltaGas elected as an accounting policy to 
account for forfeitures when they occur instead of estimating the number of awards that are expected to vest. The ASU 
requires this change  to be  adopted  using  the modified  retrospective approach  and as  a  result,  AltaGas  recorded a 
decrease  to  accumulated  retained  earnings  of  approximately  $1  million  and  an  increase  to  contributed  surplus  of 

approximately $1 million. The deferred tax impact was immaterial. The remaining amendments to this ASU did not have 
a material impact on AltaGas' consolidated financial statements. 

FUTURE CHANGES IN ACCOUNTING PRINCIPLES 

In  May  2014,  FASB  issued  ASU  No.  2014-09  “Revenue  from  Contracts  with  Customers”,  which  will  replace  numerous 
requirements in U.S. GAAP, including industry-specific requirements, and provide companies with a single revenue recognition 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report50  
 
 
 
 
 
 
 
 
 
model for recognizing revenue from contracts with customers. The core principle of the amendments in this ASU is that an entity 
should  recognize  revenue  to  depict  the  transfer  of  promised  goods  or  services  to  customers  in  an  amount  that  reflects  the 
consideration  to  which  the  entity  expects  to  be  entitled  in  exchange  for  those  goods  or  services.  The  amendments  specify 
various disclosure requirements that would enable users of financial statements to understand the nature, amount, timing, and 
uncertainty of revenue and cash flows arising from contracts with customers. In March 2016, FASB issued ASU No. 2016-08 

“Principal versus Agent Consideration”. The amendments in this ASU clarify the implementation guidance on the principal versus 
agent  considerations  in  the  new  revenue  recognition  standard.  In  April  2016,  FASB  issued  ASU  No.  2016-10  “Identifying 
Performance Obligation and Licensing”, which reduces the complexity when applying the guidance for identifying performance 
obligations  and  improves  the  operability  and  understandability  of  the  license  implementation  guidance.  In  May  2016,  FASB 
issued  ASU  No.  2016-12  “Narrow  Scope  Improvements  and  Practical  Expedients”,  clarifying  several implementation  issues, 
including  collectability,  presentation  of  sales  taxes,  non-cash  consideration,  contract  modification,  completed  contracts,  and 
transition. In December 2016, FASB issued ASU No. 2016-20 “Technical Corrections and Improvements”, which makes minor 
technical corrections and improvements to the new revenue standard. The new revenue standard will be effective for annual and 

interim periods beginning on or after December 15, 2017. The ASU permits the use of either the full retrospective or modified 
retrospective  transition  method  and  AltaGas  has  elected  the  modified  retrospective  transition  method.  In  2016,  AltaGas 
established  a  cross-functional  implementation  team  consisting  of  representatives  from  across  all  the  operating  segments.  A 
scoping exercise was completed for each of AltaGas’ operating segments and AltaGas selected all material contracts or contract 
groups for review to identify potential impacts under the new standard. AltaGas has completed the contracts review and have not 
identified  any  material  changes  in  how  revenues  are  recognized  under  the  new  standard.  AltaGas  has  started  a process  to 
compile the information needed to meet the new disclosure requirements and noted that there will be changes to the revenue 
disclosures based on additional requirements under the new standard regarding the disaggregation of revenue as well as details 
about performance obligations, and contracts assets and liabilities.   

In January 2016, FASB issued ASU No. 2016-01 “Recognition and Measurement of Financial Assets and Financial Liabilities” 
which revises an entity’s accounting related to (1) the classification and measurement of investments in equity securities and (2) 
the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure 
requirements associated with the fair value of financial instruments. The amendments in this ASU are effective for fiscal years 
beginning after December 15, 2017, including interim periods within those fiscal years. Upon adoption, entities will be required to 
make a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which 
the guidance is effective. The guidance on equity securities without readily determinable fair value will be applied prospectively 
to all equity investments that exist as of the date of adoption of the standard. Upon adoption, AltaGas will no longer be able to 

classify equity securities with readily determinable fair values as available-for-sale and any changes in fair value will be reported 
through earnings instead of other comprehensive income. The remaining provisions of this ASU are not expected to have a 
material impact on AltaGas’ financial statements.     

In  February  2016,  FASB  issued  ASU  No.  2016-02  “Leases”,  which  requires  lessees  to  recognize  on  the  balance  sheet  a 
right-of-use  asset  and  a  lease  liability  for  all  leases  with  lease  terms  greater  than  12  months.  Lessor  accounting  remains 
substantially unchanged, however, the ASU modifies what qualifies as a sales-type and direct financing lease and eliminates the 
real  estate-specific  provisions  included  in  ASC  840.  The  ASU  also  requires  additional  disclosures  regarding  leasing 

arrangements. In January 2018, FASB issued ASU No. 2018-01 “Land Easement Practical Expedient for Transition to Topic 
842” providing entities with an optional election not to evaluate existing and expired land easements not previously accounted for 
as leases under ASC 840 using the provisions of ASC 842. The amendments to the new leases standard are effective for fiscal 
years beginning after December 15, 2018, including interim periods within those fiscal years. In transition, lessees and lessors 
are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective 
approach. AltaGas is currently performing a scoping exercise by gathering a complete inventory of lease contracts in order to 
evaluate the impact of adopting ASC 842 on its consolidated financial statements, but expects that the new standard will have an 
impact on the Corporation’s balance sheet as all operating leases will need to be reflected on the balance sheet upon adoption. 
In addition, AltaGas currently expects to utilize the transition practical expedients which allow entities to not have to reassess 

whether an arrangement contains a lease under the provisions of ASC 842. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report51 
 
 
In  June  2016,  FASB  issued  ASU  No.  2016-13  “Financial  Instruments  –  Credit  Losses:  Measurement  of  Credit  Losses  on 
Financial  Instruments”.  The  amendments  in  this  ASU  replace  the  current  “incurred  loss”  impairment  methodology  with  an 
“expected loss” model for financial assets measured at amortized cost. The amendments in this ASU are effective for fiscal 
periods beginning after December 15, 2020, and interim periods within those fiscal periods. Early adoption is permitted. AltaGas 
is currently assessing the impact of this ASU on its consolidated financial statements. 

In August 2016, FASB issued ASU No. 2016-15 “Statement of Cash Flows: Classification of Certain Cash Receipts and Cash 
Payments”. The amendments in this ASU clarify the classification of certain cash flow transactions on the statement of cash flow. 

The amendments in this ASU are effective for fiscal periods beginning after December 15, 2017, and interim periods within those 
fiscal  periods.  Early  adoption is  permitted.  The  adoption  of  this  ASU  is  not expected  to have  a  material impact on  AltaGas’ 
consolidated financial statements. 

In October 2016, FASB issued ASU No. 2016-16 “Income Taxes: Intra-Entity Transfers of Assets Other Than Inventory”. The 

amendments in this ASU revise the accounting for income tax consequences on intra-entity transfers of assets by requiring an 
entity to recognize current and deferred tax on intra-entity transfers of assets other than inventory when the transfer occurs. The 
amendment in this ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those 
annual  periods.  An  entity  should  apply  the  amendments  in  this  ASU  on  a  modified  retrospective  basis  through  a 
cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this ASU 
is not expected to have a material impact on AltaGas’ consolidated financial statements. 

In November 2016, FASB issued ASU No. 2016-18 “Statement of Cash Flows: Restricted Cash”. The amendments in this ASU 
require  those  amounts  deemed  to  be  restricted  cash  and  restricted  cash  equivalents  to  be  included  in  the  cash  and  cash 

equivalents balance on the statement of cash flows. The amendments in this ASU are effective for annual periods beginning 
after December 15, 2017, and interim periods within those annual periods. An entity should apply the amendments in this ASU 
retrospectively to each period presented. Early adoption is also permitted. The adoption of this ASU is not expected to have  a 
material impact on AltaGas’ consolidated cash flow statements. 

In  January  2017,  FASB  issued  ASU  No.  2017-01  “Business  Combinations:  Clarifying  the  Definition  of  a  Business”.  The 
amendments in this ASU change the definition of a business to assist entities with evaluating when a set of transferred assets 
and activities is a business. The amendments in this ASU are effective for annual periods beginning after December 15, 2017, 
and interim periods within those annual periods. An entity should apply the amendments in this ASU on a prospective basis on or 

after the effective date. AltaGas will apply the amendments prospectively. 

In  January  2017,  FASB  issued  ASU  No.  2017-04  “Intangibles  –  Goodwill  and  Other:  Simplifying  the  Test  for  Goodwill 
Impairment”. The ASU removes Step 2 of the goodwill impairment test, eliminating the requirement to determine the fair value of 
individual assets and liabilities of a reporting unit to measure the goodwill impairment. An entity should adopt the amendments in 
this  ASU  for annual  periods  beginning after  December  15, 2020, and  interim  periods  within  those annual  periods.  An entity 
should apply the amendments in this ASU on a prospective basis. Early adoption is permitted. AltaGas currently expects to apply 
the amendments prospectively. 

In February 2017, FASB issued ASU No. 2017-05 “Other Income – Gains and Losses from the De-recognition of Nonfinancial 
Assets: Clarifying the Scope of Asset De-recognition Guidance and Accounting for Partial Sales of Nonfinancial Assets”. The 
amendments in this ASU clarify the scope of ASC 610-20 as well as the accounting for partial sales of nonfinancial assets. The 
effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition 
requirements for ASU No. 2014-09, which is effective for fiscal years and interim periods beginning on or after December 15, 
2017. The adoption of this ASU is not expected to have a material impact on AltaGas’ consolidated financial statements. 

In  March  2017,  FASB  issued  ASU  No.  2017-07  “Compensation  –  Retirement  Benefits:  Improving  the  Presentation  of  Net 

Periodic Pension Cost and Net Periodic Postretirement Benefit Cost”. The amendments in this ASU revise the presentation of 
net periodic pension cost and net periodic postretirement benefit cost on the income statement and limit the components that are 
eligible for capitalization in assets to only the service cost component. The amendments in this ASU are effective for annual 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report52  
 
 
 
 
 
 
 
periods beginning  after  December  15,  2017,  and  interim periods  within  those  annual  periods.  The amendments  in  this  ASU 
should be applied retrospectively for the presentation of the service cost component and the other components of net benefit 
cost  in  the  income  statement  and  prospectively,  on  and  after  the  effective  date,  for  the  capitalization  of  the  service  cost 
component. The adoption of this ASU is not expected to have a material impact on AltaGas’ consolidated financial statements. 

In May 2017, FASB issued ASU No. 2017-09 “Compensation – Stock Compensation: Scope of Modifications Accounting”. The 
amendments  in  this  ASU  provide  guidance  on  the  types  of  changes  to  the  terms  or  conditions  of  share-based  payment 
arrangements to which an entity would be required to apply modification accounting. The amendments in this ASU are effective 
for annual periods beginning after December 15, 2017, and interim periods within those annual periods. An entity should apply 
the amendments in this ASU on a prospective basis on or after the effective date. Early adoption is permitted. AltaGas will apply 
the amendments prospectively. 

In August 2017, FASB issued ASU No. 2017-12 “Derivatives and Hedging – Targeted Improvements to Accounting for Hedging 

Activities”. The amendments in this ASU improves the financial reporting of hedging relationships to better portray the economic 
results of an entity’s risk management activities in its financial statements and make certain targeted improvements to simplify 
the application of hedge accounting. The amendments in this ASU are effective for annual periods beginning after December 15, 
2018, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this ASU is not expected to 
have a material impact on AltaGas’ consolidated financial statements.   

OFF-BALANCE SHEET ARRANGEMENTS 

In the first quarter of 2017, AltaGas completed the sale of approximately 84.5 million subscription receipts, the net proceeds 
thereof are held in escrow as described under the Developments Relating to the Pending WGL Acquisition section of this MD&A. 

In May 2009, the National Energy Board (NEB) issued a decision that set out guiding principles for a mechanism that would set 
aside funds for pipeline abandonment. It also established a five-year action plan for all NEB-regulated companies. In May 2014, 
the NEB issued a decision establishing that, by January 1, 2015, all NEB-regulated companies must have a mechanism in place 
for  the  accumulation  of  funds  to  pay  for  future  pipeline  abandonment.  AltaGas  Holdings  Inc.,  a  wholly-owned  subsidiary  of 
AltaGas, opted to comply with the NEB decision with a surety bond supplied by a surety company regulated by the Office of the 
Superintendent of Financial Institutions in the amount of $30 million.   

In  October  2014,  AltaGas  issued  two  guarantees  with  an  aggregate  maximum  liability  of  approximately  US$92  million, 
guaranteeing Heritage Gas’ payment obligations under a transportation agreement entered into by Heritage Gas with Enbridge 
Inc.  (formerly  Spectra  Energy)  for  the  use  of  the  expansion  of  its  Algonquin  Gas  Transmission  and  Maritimes  &  Northeast 
Pipeline systems. 

AltaGas is not party to any contractual arrangements with unconsolidated entities that have, or are reasonably likely to have, a 
current or future material effect on the Corporation’s financial performance or financial condition including liquidity and capital 
resources.     

DISCLOSURE  CONTROLS  AND  PROCEDURES  (DCP)  AND  INTERNAL  CONTROL  OVER  FINANCIAL  REPORTING 
(ICFR) 

Management, including the Chief Executive Officer and Chief Financial Officer, is responsible for establishing and maintaining 
DCP and ICFR, as those terms are defined in National Instrument 52-109 "Certification of Disclosure in Issuers' Annual and 
Interim Filings". The objective of this instrument is to improve the quality, reliability, and transparency of information that is filed or 
submitted under securities legislation. 

Management, including the Chief Executive Officer and the Chief Financial Officer, have designed, or caused to be designed 
under their supervision, DCP and ICFR to provide reasonable assurance that information required to be disclosed by AltaGas in 
its annual filings, interim filings or other reports to be filed or submitted by it under securities legislation is made known to them, 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report53 
 
  
 
 
 
 
  
 
 
is  reported  on  a  timely  basis,  financial  reporting  is  reliable,  and  financial  statements  prepared  for  external  purposes  are  in 
accordance with U.S. GAAP. 

The ICFR has been designed based on the framework established in the 2013 Internal Control - Integrated Framework issued by 
the Committee of Sponsoring Organizations of the Treadway Commission (COSO). 

The  Chief  Executive  Officer  and  the  Chief Financial  Officer  have  evaluated,  with  the  assistance of  AltaGas'  employees,  the 
effectiveness of AltaGas’ DCP and ICFR as at December 31, 2017 and concluded that as at December 31, 2017, AltaGas' DCP 
and ICFR were effective.   

It should be noted that a control system, no matter how well conceived and operated, can provide only reasonable, not absolute, 
assurance  that  the  objectives  of  the  control  system  are  met.  Because  of  the  inherent  limitations  in  all  control  systems,  no 
evaluation of controls can provide absolute assurance that all control issues, including instances of fraud, if any, have been 
detected. The design of any system of controls is also based in part on certain assumptions about the likelihood of future events, 
and there can be no assurances that any design will succeed in achieving its stated goals under all potential conditions. 

SUMMARY OF CONSOLIDATED RESULTS FOR THE EIGHT MOST RECENT QUARTERS (1) 

($ millions) 
Total revenue 
Normalized EBITDA(2) 
Net income (loss) applicable to   
        common shares   
($ per share) 
Net income (loss) per common share 

Basic   
Diluted 

Dividends declared 
(1)  Amounts may not add due to rounding.   

Q4-17  Q3-17  Q2-17  Q1-17  Q4-16  Q3-16  Q2-16  Q1-16 
  745  
  611  
  213  
  178  

  492  
  176  

  661  
  194  

  502  
  190  

  771  
  228  

  539  
  166  

  426  
  153  

  (11) 

  55  
Q4-17  Q3-17  Q2-17  Q1-17  Q4-16  Q3-16  Q2-16  Q1-16 

  46  

  18  

  32  

  38  

  16  

  (8) 

  (0.06) 
  (0.06) 
  0.54  

  0.10  
  0.10  
  0.53  

  (0.05) 
  (0.05) 
  0.53  

  0.19  
  0.19  
  0.53  

  0.23  
  0.23  
  0.53  

  0.28  
  0.28  
  0.52  

  0.10  
  0.10  
  0.50  

  0.38  
  0.38  
  0.50  

(2)  Non-GAAP financial measure. See discussion in the "Non-GAAP Financial Measures" section of this MD&A. 

AltaGas’  quarter-over-quarter  financial  results  are  impacted  by  seasonality,  fluctuations  in  commodity  prices,  weather,  the 

U.S./Canadian  dollar  exchange  rate,  planned  and  unplanned  plant  outages,  timing  of  in-service  dates  of  new  projects,  and 
acquisition and divestiture activities.   

Revenue for the Utilities is generally the highest in the first and fourth quarters of any given year as the majority of natural gas 
demand  occurs  during  the  winter  heating  season,  which  typically  extends  from  November  to  March.  The  run-of-river 
hydroelectric facilities in British Columbia are also impacted by seasonal precipitation and snowpack melt, which create periods 
of high flow during the spring and summer months. 

Other significant items that impacted quarter-over-quarter revenue during the periods noted include: 

 
 

 
 

 

 

The weak NGL commodity prices throughout 2016;   

The closing of the Tidewater Gas Asset Disposition on February 29, 2016; 

The weak Alberta power pool prices throughout 2016; 

The stronger U.S. dollar throughout 2016 and the weaker U.S. dollar in the second half of 2017 on translated results of 

the U.S. assets;   

The seasonally warmer weather experienced at all of the Utilities in the first quarter of 2016 and the colder weather in 
the fourth quarter of 2017; 

The commencement of commercial operations early in the third quarter of 2016 at the integrated midstream complex at 
Townsend in northeast British Columbia, including the Townsend Facility, gas gathering line, NGL egress pipelines and 
truck terminal;   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report54  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 

 
 

 

The recovery of $7 million of development costs related to the PNG Pipeline Looping Project in the third quarter of 2016. 

The commissioning of the Pomona Energy Storage Facility on December 31, 2016;   

The closing of the sale of the EDS and the JFP transmission assets to Nova Chemicals in March of 2017;   

The commencement of commercial operations on October 1, 2017 at Townsend 2A; 

The commencement of commercial operations at the first train of the North Pine Facility on December 1, 2017; and   

Unrealized  losses  on  risk  management  contracts  recorded  in  2017  related  to  the  foreign  currency  option  contracts 
entered into to mitigate the foreign exchange risks associated with the cash purchase price of WGL.   

Net income (loss) applicable to common shares is also affected by non-cash items such as deferred income tax, depreciation 
and  amortization  expense,  accretion  expense,  provision  on  assets,  gains  or  losses  on  long-term  investments,  and  gains  or 
losses on the sale of assets. In addition, net income (loss) applicable to common shares is also impacted by preferred share 
dividends. For these reasons, the net income (loss) may not necessarily reflect the same trends as revenue. Net income (loss) 
applicable to common shares during the periods noted was impacted by: 

 

 
 

 

 

 

 

 

 

Higher depreciation and amortization expense due to new assets placed into service; 

Higher interest expense throughout 2017 mainly due to higher financing costs associated with the bridge facility; 

An after-tax gain on sale of $14 million in the first quarter of 2016 related to the Tidewater Gas Asset Disposition;   

After-tax restructuring charges of $5 million related to the non-utility workforce restructuring in the second quarter of 
2016;   

The  termination  of  the  Sundance  B  PPAs  effective  March  8,  2016  pursuant  to  the  change  in  law  provision  of  the 

Sundance B PPAs and as a result, AltaGas recognized an after-tax provision of $4 million on its investment in ASTC to 
settle the working capital deficiency in the first quarter of 2016. In addition, AltaGas recognized a pre-tax termination 
expense of $8 million (after-tax $7 million) upon reaching a definitive settlement agreement with the GOA regarding the 
termination of the Sundance B PPAs in the fourth quarter of 2016. Including the tax recovery on the dissolution of ASTC 
of $8 million, the after-tax impact on the termination of the Sundance B PPAs was approximately $3 million.   

The unrealized loss of approximately $8 million recognized upon ceasing to account for the Tidewater investment using 
the equity method in the second quarter of 2017;   

After-tax provisions totaling $84 million recognized in the fourth quarter of 2017 related to the Hanford and Henrietta 

gas-fired peaking facilities, a non-core gas processing facility in Alberta, and a non-core development stage peaking 
project in California;   

Impact of the U.S. tax reform resulting in a decrease in tax expense of approximately $34 million in the fourth quarter of 

2017; and 

After-tax transaction costs incurred throughout 2017 related to the pending WGL Acquisition.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report55 
 
SELECTED ANNUAL FINANCIAL INFORMATION 

($ millions, except where noted) 
Revenue 
Net income applicable to common shares 

Basic ($ per share) 
Diluted ($ per share) 

Total assets 
Total long-term financial liabilities 
Weighted average number of common shares outstanding (millions) 
Dividends declared per common share ($ per share) 
Preferred share dividends declared ($ per share) 

Series A   
Series B 
Series C 
Series E 
Series G 
Series I 
Series K 

2017 
  2,556  
  30  
  0.18  
  0.18  
  10,032  
  3,596  
  171  
  2.115000  

  0.845000  
  0.806380  
  1.155625  
  1.250000  
  1.187500  
  1.312500  
  1.063400  

2016 
  2,190  
  155  
  0.99  
  0.99  
  10,201  
  3,532  
  157  
  2.030000  

  0.845000  
  0.786920  
  1.100000  
  1.250000  
  1.187500  
  1.448245  
  — 

2015 
  2,193  
  10  
  0.07  
  0.07  
  10,100  
  3,899  
  138  
  1.885000  

  1.148750  
  0.191560  
  1.100000  
  1.250000  
  1.187500  
  — 
  — 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report56  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
Other Information 

DEFINITIONS 

Bbls/d 
Bcf 
GJ 
GWh 

Mcf 
Mmcf/d 
MW 
MWh 
MMBTU 
PJ 
US$ 

barrels per day 
billion cubic feet 
gigajoule 
gigawatt-hour 

thousand cubic feet 
million cubic feet per day 
megawatt 
megawatt-hour 
million British thermal unit 
petajoule 
United States dollar 

ABOUT ALTAGAS 

AltaGas is an energy infrastructure business with a focus on natural gas, power and regulated utilities. The Corporation creates 
value  by  acquiring,  growing  and  optimizing  its  energy  infrastructure,  including  a  focus  on  clean  energy  sources.  For  more 
information visit: www.altagas.ca. 

For further information contact: 

Investment Community 

1-877-691-7199 
investor.relations@altagas.ca 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report57 
 
 
 
 
 
 
 
 
Management’s Responsibility for Consolidated Financial 
Statements 

The Consolidated Financial Statements and Management’s Discussion and Analysis (MD&A) of AltaGas Ltd. (AltaGas or the 
Corporation) are the responsibility of Management and have been approved by the Board of Directors of the Corporation. The 
Consolidated Financial Statements have been prepared by Management in accordance with United States Generally Accepted 
Accounting Principles (U.S. GAAP) and include amounts that are based on Management’s best estimates and judgments.   

Management  is  responsible  for  establishing  and  maintaining  adequate  internal  controls  over  financial  reporting  for  the 
Corporation. Management has designed and maintains a system of internal controls over financial reporting, including a program 

of internal audits to carry out its responsibility. Management believes these controls provide reasonable assurance that financial 
records are reliable and form a proper basis for the preparation of financial statements. Management undertakes communication 
to employees of policies that govern ethical business conduct. 

The  MD&A  and  Consolidated  Financial  Statements  are  approved  by  the  Board  of  Directors  after  considering  the 
recommendation  of  the  Audit  Committee.  The  Audit  Committee  of  the  Board  of  Directors  is  composed  of  independent 
non-management directors. 

The Audit Committee meets with Management regularly and meets independently with internal and external auditors and as a 

group to review any significant accounting, internal controls and auditing matters in accordance with the terms of the Charter of 
the Audit Committee, which is set out in the Annual Information Form. The Audit Committee’s responsibilities include overseeing 
Management’s  performance  in  carrying  out  its  financial  reporting  responsibilities  and  reviewing  the  Consolidated  Financial 
Statements  and  MD&A,  before  these  documents  are  submitted  to  the  Board  of  Directors  for  approval.  The  internal  and 
independent external auditors have access to the Audit Committee without obtaining prior Management approval. 

The Audit Committee approves the terms of engagement of the independent external auditors and reviews the annual audit plan, 
the Auditors’ Report and the results of the audit. It also recommends to the Board of Directors the firm of external auditors to be 

appointed by the shareholders. 

The shareholders have appointed Ernst & Young LLP as independent external auditors to express an opinion as to whether the 
Consolidated  Financial  Statements  present  fairly,  in  all  material  respects,  the  Corporation’s  consolidated  financial  position, 
results of operations and cash flows in accordance with U.S. GAAP. The report of Ernst & Young LLP outlines the scope of its 
examination and its opinion on the Consolidated Financial Statements. 

(signed) “David Harris” 

DAVID HARRIS   
President and 
Chief Executive Officer of 
AltaGas Ltd. 

February 28, 2018 

(signed) “Tim Watson” 

TIM WATSON 
Executive Vice President and 
Chief Financial Officer of 
AltaGas Ltd. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report58 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
Independent Auditors' Report 

To the Shareholders of AltaGas Ltd. 

We  have  audited  the  accompanying  Consolidated  Financial  Statements  of  AltaGas  Ltd.,  which  comprise  the  consolidated 
balance sheets as at December 31, 2017 and 2016, and the consolidated statements of income, comprehensive income (loss), 
equity  and  cash  flows  for  the  years  then  ended,  and  a  summary  of  significant  accounting  policies  and  other  explanatory 
information. 

Management's Responsibility for the Consolidated Financial Statements 

Management is responsible for the preparation and fair presentation of these Consolidated Financial Statements in accordance 
with  United  States  Generally  Accepted  Accounting  Principles,  and  for  such  internal  control  as  management  determines  is 
necessary to enable the preparation of Consolidated Financial Statements that are free from material misstatement, whether due 
to fraud or error. 

Auditors’ Responsibility 

Our responsibility is to express an opinion on these Consolidated Financial Statements based on our audits. We conducted our 
audits  in  accordance  with  Canadian  Generally  Accepted  Auditing  Standards.  Those  standards  require  that  we  comply  with 

ethical requirements and plan and perform the audit to obtain reasonable assurance about whether the Consolidated Financial 
Statements are free from material misstatement. 

An  audit  involves  performing  procedures  to  obtain  audit  evidence  about  the  amounts  and  disclosures  in  the  Consolidated 
Financial  Statements.  The  procedures  selected  depend  on  the  auditors’  judgment,  including  the  assessment  of  the  risks  of 
material  misstatement  of  the  Consolidated  Financial  Statements,  whether  due  to  fraud  or  error.  In  making  those  risk 
assessments, the auditors consider internal control relevant to the entity's preparation and fair presentation of the Consolidated 
Financial Statements in order to design audit procedures that are appropriate in the circumstances, but not for the purpose  of 
expressing an opinion on the effectiveness of the entity's internal control. An audit also includes evaluating the appropriateness 

of accounting policies used and the reasonableness of accounting estimates made by management, as well as evaluating the 
overall presentation of the Consolidated Financial Statements. 

We believe that the audit evidence we have obtained in our audits is sufficient and appropriate to provide a basis for our audit 
opinion.   

Opinion 

In our opinion, the Consolidated Financial Statements present fairly, in all material respects, the financial position of AltaGas Ltd. 

as at December 31, 2017 and 2016 and the results of its operations and its cash flows for the years then ended in accordance 
with United States Generally Accepted Accounting Principles. 

Calgary, Canada 

February 28, 2018 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report59  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Balance Sheets 

As at ($ millions) 

ASSETS 
Current assets 

Cash and cash equivalents 
Accounts receivable, net of allowances (notes 4 and 20) 
Inventory (note 5) 
Restricted cash holdings from customers 
Regulatory assets (note 18) 
Risk management assets (note 20) 
Prepaid expenses and other current assets 
Assets held for sale (note 4) 

Property, plant and equipment (notes 4 and 6) 
Intangible assets (notes 4 and 7) 
Goodwill (notes 4 and 8)   
Regulatory assets (note 18) 
Risk management assets (note 20) 
Deferred income taxes (note 17) 
Restricted cash holdings from customers 
Long-term investments and other assets (note 10) 
Investments accounted for by the equity method (note 12) 

LIABILITIES AND SHAREHOLDERS' EQUITY 
Current liabilities 

Accounts payable and accrued liabilities (note 20) 
Dividends payable (note 20) 
Short-term debt (notes 13 and 20) 
Current portion of long-term debt (notes 14 and 20)   
Customer deposits 
Regulatory liabilities (note 18) 
Risk management liabilities (note 20) 
Other current liabilities (notes 16 and 20) 
Liabilities associated with assets held for sale (note 4) 

Long-term debt (notes 14 and 20)   
Asset retirement obligations (notes 4 and 15) 
Deferred income taxes (note 17) 
Regulatory liabilities (note 18) 
Risk management liabilities (note 20)   
Other long-term liabilities (notes 16 and 20) 
Future employee obligations (note 25) 

December 31, 
2017 

December 31, 
2016 

$ 

  27.3   $ 

  382.9  
  201.1  
  8.9  
  1.1  
  38.6  
  36.0  
  6.0  
  701.9  

  19.0  
  338.8  
  221.0  
  5.0  
  0.9  
  40.4  
  42.8  
  70.7  
  738.6  

  6,689.8  
  588.8  
  817.3  
  328.6  
  15.9  
  2.8  
  7.5  
  312.6  
  567.0  
  10,032.2   $ 

  6,734.9  
  694.3  
  856.0  
  329.1  
  24.1  
  2.8  
  10.1  
  189.3  
  621.4  
  10,200.6  

  415.3   $ 
  32.0  
  46.8  
  188.9  
  30.8  
  10.9  
  57.6  
  32.6  
  0.3   
  815.2  

  3,436.5  
  88.3  
  444.2  
  268.6  
  13.8  
  201.9  
  124.5  
  5,393.0   $ 

  345.8  
  29.2  
  128.7  
  383.4  
  35.5  
  16.6  
  32.9  
  23.6  
  0.4  
  996.1  

  3,366.9  
  81.6  
  621.7  
  170.5  
  12.6  
  206.3  
  129.5  
  5,585.2  

$ 

$ 

$ 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report60 
 
 
 
 
 
 
 
 
 
  
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As at ($ millions) 
Shareholders' equity 

Common shares, no par values, unlimited shares authorized;   
     2017 - 175.3 million and 2016 - 166.9 million issued and outstanding (note 21)   
Preferred shares (note 21)   
Contributed surplus 
Accumulated deficit 
Accumulated other comprehensive income (AOCI) (note 19) 

Total shareholders' equity 
Non-controlling interests   
Total equity 

December 31, 
2017 

December 31, 
2016 

$ 

  4,007.9   $ 
  1,277.7  
  22.3  
  (933.6) 
  199.1  
  4,573.4  
  65.8  
  4,639.2  

$ 

  10,032.2   $ 

  3,773.4  
  985.1  
  17.4  
  (600.4) 
  405.1  
  4,580.6  

  34.8  
  4,615.4  
  10,200.6  

Variable interest entity (note 11). 
Commitments, contingencies and guarantees (note 26). 
Subsequent events (note 30). 

See accompanying notes to the Consolidated Financial Statements. 

Approved by the Board of Directors of AltaGas Ltd. 

(signed) “David W. Cornhill” 

(signed) “Robert B. Hodgins” 

DAVID W. CORNHILL   
Director 

ROBERT B. HODGINS 
Director 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report61  
 
 
 
 
 
 
 
 
  
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
Consolidated Statements of Income 

For the year ended December 31 ($ millions except per share amounts) 

2017 

2016 

REVENUE   

Regulated operations 
Services (note 24) 
Sales 
Other revenue 
Unrealized losses on risk management contracts (note 20) 

$ 

  1,119.1   $ 
  903.3  
  595.9   
  0.4  
  (62.5) 
  2,556.2  

EXPENSES 

Cost of sales, exclusive of items shown separately 
Operating and administrative 
Accretion expenses (notes 15 and 16) 
Depreciation and amortization (notes 6 and 7) 
Provisions on assets (note 9) 

Income from equity investments (note 12) 
Other income (note 23) 
Foreign exchange gains   
Interest expense 
Short-term debt 
Long-term debt 

Income before income taxes 
Income tax expense (recovery) (note 17) 

Current 
Deferred   

Net income after taxes 

Net income applicable to non-controlling interests 
Net income applicable to controlling interests 
Preferred share dividends 
Net income applicable to common shares 

Net income per common share (note 22) 

Basic 
Diluted 

Weighted average number of common shares   
   outstanding (millions) (note 22) 

Basic 
Diluted 

See accompanying notes to the Consolidated Financial Statements. 

$ 

$ 
$ 

  1,049.9  
  828.4  
  315.6  
  7.2  
  (11.4) 
  2,189.7  

  1,016.9  
  509.3  
  11.0  
  271.5  
  — 
  1,808.7  

  3.4  
  8.6  
  4.0  

  (3.1) 
  (147.7) 
  246.2  

  24.4  
  8.4  
  213.4  

  9.9  
  203.5  
  (48.1) 
  155.4  

  1,357.1  
  573.8  
  10.9  
  282.4  
  139.6  
  2,363.8  

  31.4  
  11.2  
  1.7  

  (3.7) 
  (166.6) 
  66.4  

  30.5  
  (64.0) 
  99.9  

  8.3  
  91.6  
  (61.3) 
  30.3   $ 

  0.18   $ 
  0.18   $ 

  0.99  
  0.99  

  171.0  
  171.3  

  157.2  
  157.6  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report62 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
  
  
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
  
  
  
  
 
  
  
 
 
  
 
 
 
 
 
 
 
Consolidated Statements of Comprehensive Income (Loss)   

For the year ended December 31 ($ millions) 
Net income after taxes 
Other comprehensive income (loss), net of taxes 

Loss on foreign currency translation   
Unrealized gain on net investment hedge (note 20) 
Actuarial losses on pension plans and post-retirement benefit (PRB) plans (note 25) 

Reclassification of actuarial losses and prior service costs on defined benefit and PRB 

plans to net income (note 25) 
Settlement of PRB plan (note 25) 
Unrealized gain (loss) on available-for-sale assets 
Other comprehensive income (loss) from equity investees   
Total other comprehensive loss (OCI), net of taxes (note 19) 

2017 
  99.9   $ 

2016 
  213.4  

$ 

  (183.4) 
  6.6  
  (1.0) 

  0.7  
  0.2  
  (26.9) 
  (2.2) 
  (206.0) 

  (84.2) 
  34.0  
  (2.4) 

  0.7  
  — 
  22.2  
  1.3  
  (28.4) 

Comprehensive income (loss) attributable to controlling interests and 
non-controlling interests, net of taxes 

$ 

  (106.1)  $ 

  185.0  

Comprehensive income (loss) attributable to: 

Non-controlling interests 
Controlling interests 

 See accompanying notes to the Consolidated Financial Statements. 

$ 

$ 

  8.3   $ 

  (114.4) 
  (106.1)  $ 

  9.9  
  175.1  
  185.0  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report63  
 
 
 
 
 
 
 
 
 
 
  
  
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
Consolidated Statements of Equity 

For the year ended December 31 ($ millions) 

2017 

2016 

Common shares (note 21)   
Balance, beginning of year 
Shares issued for cash on exercise of options 
Shares issued under DRIP (1) 
Deferred taxes on share issuance costs 
Shares issued on public offering, net of issuance costs 
Balance, end of year 
Preferred shares (note 21) 
Balance, beginning of year 
Series K Issued 
Deferred taxes on share issuance costs 
Balance, end of year 
Contributed surplus 
Balance, beginning of year 
Share options expense 
Exercise of share options 
Forfeiture of share options 
Adoption of ASU No. 2016-09 (note 2) 
Sale of non-controlling interest (note 11) 
Balance, end of year 
Accumulated deficit   
Balance, beginning of year 
Net income applicable to controlling interests 
Common share dividends 
Preferred share dividends 
Adoption of ASU No. 2016-09 (note 2) 
Balance, end of year 
AOCI (note 19) 
Balance, beginning of year 
Other comprehensive loss 
Balance, end of year 
Total shareholders' equity 

Non-controlling interests 
Balance, beginning of year 
Net income applicable to non-controlling interests 
Sale of non-controlling interest (note 11) 
Contributions from non-controlling interests to subsidiaries 
Distributions by subsidiaries to non-controlling interests 
Balance, end of year 
Total equity 
(1)  Premium Dividend™, Dividend Reinvestment and Optional Cash Purchase Plan. 

See accompanying notes to the Consolidated Financial Statements. 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 
$ 

$ 

$ 

  3,773.4   $ 
  6.5  
  236.3  
  (8.3) 
  — 

  4,007.9   $ 

  985.1   $ 
  293.4  
  (0.8) 
  1,277.7   $ 

  17.4   $ 
  1.4  
  (0.5) 
  (0.1) 
  1.1  
  3.0  
  22.3   $ 

  (600.4)  $ 
  91.6  
  (362.4) 
  (61.3) 
  (1.1) 
  (933.6)  $ 

  3,168.1  
  9.3  
  173.6  
  0.2  
  422.2  
  3,773.4  

  985.1  
  — 
  — 
  985.1  

  16.7  
  1.6  
  (0.7) 
  (0.2) 
  — 
  — 
  17.4  

  (435.4) 
  203.5  
  (320.4) 
  (48.1) 
  — 
  (600.4) 

  405.1   $ 
  (206.0) 
  199.1   $ 
  4,573.4   $ 

  433.5  
  (28.4) 
  405.1  
  4,580.6  

  34.8   $ 
  8.3  
  20.0  
  11.0  
  (8.3) 
  65.8  
  4,639.2   $ 

  34.9  
  9.9  
  — 
  — 
  (10.0) 
  34.8  
  4,615.4  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report64 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
  
  
 
 
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
  
 
Consolidated Statements of Cash Flows 

For the year ended December 31 ($ millions) 
Cash from operations   
Net income after taxes 
Items not involving cash: 

Depreciation and amortization (notes 6 and 7) 
Provisions on assets (note 9) 
Accretion expenses (notes 15 and 16) 
Share-based compensation (note 21) 
Deferred income tax expense (recovery) (note 17) 
Losses (gains) on sale of assets (notes 3 and 23) 
Income from equity investments (note 12) 
Unrealized losses on risk management contracts (note 20) 
Unrealized gains on long-term investments (note 23) 
Amortization of deferred financing costs 
Other 

Asset retirement obligations settled (note 15) 
Distributions from equity investments 
Changes in operating assets and liabilities (note 28) 

Investing activities 
Business acquisitions, net of cash acquired (note 3) 
Acquisition of property, plant and equipment 
Acquisition of intangible assets 
Acquisition of investment in a publicly traded entity 
Contributions to equity investments 
Loan to affiliate, net of repayment (note 27) 
Change in restricted cash holdings from customers 
Investment in Petrogas preferred shares (note 12) 
Payment for derivative contracts 
Proceeds from disposition of assets, net of transaction costs (note 3) 

Financing activities 

Net issuance (repayment) of short-term debt 
Issuance of long-term debt, net of debt issuance costs 
Repayment of long-term debt 
Dividends - common shares   
Dividends - preferred shares   
Distributions to non-controlling interest   
Contributions from non-controlling interests 
Net proceeds from shares issued on exercise of options 
Net proceeds from issuance of common shares 
Net proceeds from issuance of preferred shares 
Proceeds from sale of non-controlling interest 
Other 

Change in cash and cash equivalents 
Effect of exchange rate changes on cash and cash equivalents 
Cash and cash equivalents, beginning of year 
Cash and cash equivalents, end of year 

See accompanying notes to the Consolidated Financial Statements.  

2017 

2016 

$ 

  99.9   $ 

  213.4  

  282.4  
  139.6  
  10.9  
  1.3  
  (64.0) 
  2.7  
  (31.4) 
  62.5  
  (3.6) 
  16.9  
  (4.1) 
  (4.0) 
  30.2  
  5.9   
  545.2   $ 

  — 
  (473.0) 
  (20.3) 
  (7.0) 
  (16.8) 
  (12.5) 
  (4.2) 
  — 
  (36.0) 
  70.5  
  (499.3)  $ 

  (74.2) 
  758.1  
  (861.6) 
  (359.6) 
  (61.3) 
  (8.3) 
  11.0  
  6.0  
  236.3  
  293.4  
  24.1  
  (1.9) 
  (38.0)  $ 
  7.9  
  0.4  
  19.0  
  27.3   $ 

  271.5  
  — 
  11.0  
  1.4  
  8.4  
  (4.2) 
  (3.4) 
  11.4  
  (0.5) 
  2.7  
  (0.2) 
  (3.8) 
  26.0  
  (77.5) 
  456.2  

  (20.0) 
  (507.2) 
  (24.4) 
  — 
  (20.2) 
  (62.5) 
  0.2  
  (150.0) 
  — 
  31.9  
  (752.2) 

  1.4  
  674.5  
  (884.3) 
  (315.3) 
  (49.2) 
  (10.0) 
  — 
  8.5  
  595.8  
  — 
  — 
  — 
  21.4  
  (274.6) 
  0.2  
  293.4  
  19.0  

$ 

$ 

$ 

$ 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report65  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to the Consolidated Financial Statements     

(Tabular amounts and amounts in footnotes to tables are in millions of Canadian dollars unless otherwise indicated.) 

1.  ORGANIZATION AND OVERVIEW OF THE BUSINESS 

The businesses of AltaGas Ltd. (AltaGas or Corporation) are operated by AltaGas and a number of its subsidiaries including, 
without limitation, AltaGas Services (U.S.) Inc.; in regards to the gas business, AltaGas Extraction and Transmission Limited 
Partnership, AltaGas Pipeline Partnership, AltaGas Processing Partnership, AltaGas Northwest Processing Limited Partnership 
and  Harmattan  Gas  Processing  Limited  Partnership;  in  regards  to  the  power  business,  Coast  Mountain  Hydro  Limited 

Partnership, Blythe Energy Inc. (Blythe), and AltaGas San Joaquin Energy Inc.; and, in regards to the utility business, AltaGas 
Utilities Inc. (AUI), Heritage Gas Limited (Heritage Gas), Pacific Northern Gas Ltd. (PNG), and SEMCO Energy, Inc. (SEMCO). 
SEMCO conducts its Michigan natural gas distribution business under the name SEMCO Energy Gas Company (SEMCO Gas) 
and its Alaska natural gas distribution business under the name ENSTAR Natural Gas Company (ENSTAR).   

AltaGas, a Canadian corporation, is a North American diversified energy infrastructure business with a focus on owning and 
operating assets to provide clean and affordable energy to its customers. AltaGas has three business segments: Gas, Power 
and Utilities. 

AltaGas' Gas segment serves producers in the Western Canada Sedimentary Basin (WCSB) and includes natural gas gathering 
and  processing,  natural  gas  liquids  (NGL)  extraction  and  fractionation,  gas  transmission,  gas  storage,  natural  gas  and  NGL 
marketing, and the one-third ownership investment, through AltaGas Idemitsu Joint Venture Limited Partnership (AIJVLP), in 
Petrogas Energy Corp. (Petrogas).   

The Power segment includes 1,708 MW of gross capacity from natural gas-fired, hydro, wind, and biomass generation facilities, 
and energy storage assets in Canada and the United States (U.S.). 

The Utilities segment is predominantly comprised of natural gas distribution rate regulated utilities in Canada and the United 
States. The utilities are generally allowed the opportunity to earn regulated returns that provide for recovery of costs and a return 
on, and of, capital from the regulator-approved capital investment base. 

2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

BASIS OF PRESENTATION 

These  Consolidated  Financial  Statements  have  been prepared  by  Management in  accordance  with  United  States  Generally 
Accepted Accounting Principles (U.S. GAAP).   

Pursuant to National Instrument 52-107, "Acceptable Accounting Principles and Auditing Standards" (NI 52-107), U.S. GAAP 
reporting is generally permitted by Canadian securities laws for companies subject to reporting obligations under U.S. securities 
laws. However, given that AltaGas is not subject to such reporting obligations and could not therefore rely on the provisions of NI 
52-107 to that effect, AltaGas sought and obtained exemptive relief by the securities regulators in Alberta and Ontario to permit 
it to prepare its financial statements in accordance with U.S. GAAP. The Alberta Securities Commission exemption will terminate 
on or after the earlier of January 1, 2024, the date to which AltaGas ceases to have activities subject to rate regulation, or the 

effective date prescribed by the International Accounting Standards Board for the mandatory application of a standard within the 
International Financial Reporting Standard for entities with activities subject to rate-regulated accounting.   

PRINCIPLES OF CONSOLIDATION 

These Consolidated Financial Statements of AltaGas include the accounts of the Corporation, its subsidiaries, variable interest 
entities (VIEs) for which the Corporation is the primary beneficiary, and its interest in various partnerships and joint ventures 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report66 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
where AltaGas has an undivided interest in the assets and liabilities. Investments in unconsolidated companies that AltaGas has 
significant influence over, but not control, are accounted for using the equity method. 

All  intercompany  balances  and  transactions  are  eliminated  on  consolidation.  Where  there  is  a  party  with  a  non-controlling 
interest  in  a  subsidiary  that  AltaGas  controls,  that  non-controlling  interest  is  reflected  as  “Non-controlling  interests”  in  the 

Consolidated Financial Statements. The non-controlling interests in net income (or loss) of consolidated subsidiaries are shown 
as  an  allocation  of  the  consolidated  net  income  and  are  presented  separately  in  "Net  income  applicable  to  non-controlling 
interests". 

USE OF ESTIMATES AND MEASUREMENT UNCERTAINTY   

The preparation of Consolidated Financial Statements in accordance with U.S. GAAP requires Management to make estimates 
and assumptions that affect the reported amounts of assets and liabilities and the reported amounts of revenue and expenses 

during  the  period.  Key  areas  where  Management  has  made  complex  or  subjective  judgments,  when  matters  are  inherently 
uncertain, include but are not limited to: depreciation and amortization rates, fair value of asset retirement obligations, fair value 
of property, plant and equipment and goodwill for impairment assessments, fair value of financial instruments, provisions for 
income  taxes,  assumptions  used  to  measure  employee  future  benefits,  provisions  for  contingencies,  and  carrying  value  of 
regulatory assets and liabilities. Certain estimates are necessary for the regulatory environment in which AltaGas' subsidiaries or 
affiliates operate, which often require amounts to be recorded at estimated values until these amounts are finalized pursuant to 
regulatory decisions or other regulatory proceedings. By their nature, these estimates are subject to measurement uncertainty 
and may impact the Consolidated Financial Statements of future periods. 

SIGNIFICANT ACCOUNTING POLICIES 

Rate-Regulated Operations 

SEMCO Gas, ENSTAR, AUI, PNG, and Heritage Gas (collectively Utilities) engage in the delivery and sale of natural gas and are 
regulated  by  the  Michigan  Public  Service  Commission  (MPSC),  Regulatory  Commission  of  Alaska  (RCA),  Alberta  Utilities 
Commission (AUC), British Columbia Utilities Commission (BCUC), and the Nova Scotia Utility and Review Board (NSUARB), 
respectively.       

The  MPSC,  RCA,  AUC,  BCUC,  and  NSUARB  exercise  statutory  authority  over  matters  such  as  tariffs,  rates,  construction, 

operations, financing, returns, accounting and certain contracts with customers. In order to recognize the economic effects of the 
actions and decisions of the MPSC, RCA, AUC, BCUC, and NSUARB, the timing of recognition of certain assets, liabilities, 
revenues and expenses as a result of regulation may differ from that otherwise expected using U.S. GAAP for entities not subject 
to rate regulation.     

Regulatory assets represent future revenues associated with certain costs incurred in the current period or in prior periods that 
are expected to be recovered from customers in future periods through the rate setting process. Regulatory liabilities represent 
future reductions or limitations of increases in revenue associated with amounts that are expected to be refunded to customers 

through the rate setting process. 

Cash and Cash Equivalents 

Cash and cash equivalents consist of cash on hand, balances with banks, and investments in money market instruments with 
original maturities of less than three months. 

Restricted Cash Holdings from Customers 

Cash deposited, which is restricted and is not available for general use by AltaGas, is separately presented as restricted cash 
holdings in the Consolidated Balance Sheets.     

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report67  
 
 
 
 
 
 
 
 
 
 
 
 
Accounts Receivable 

Receivables are recorded net of the allowance for doubtful accounts in the Consolidated Balance Sheets. AltaGas regularly 
analyzes and evaluates the collectability of the accounts receivable based on a combination of factors. If circumstances related 
to the collectability change, the allowance for doubtful accounts is further adjusted. Accounts are written off when collection 
efforts are complete and future recovery is unlikely. 

Inventory 

Inventory consists of materials, supplies, and natural gas, which are valued at the lower of cost or net realizable value. Cost of 
inventory is assigned using a weighted average cost formula. In general, commodity costs and variable transportation costs are 
capitalized as gas in underground storage. Fixed costs, primarily pipeline demand charges and storage charges, are expensed 
as incurred through the cost of gas. 

Property, Plant, and Equipment (PP&E), Depreciation and Amortization 

Property, plant, and equipment are carried at cost. The Corporation depreciates the cost of capital assets, net of salvage value, 
on a straight-line basis over the estimated useful life of the assets, with the exception of rate regulated utilities assets, where 
depreciation is calculated on a straight-line basis or over the contract term of a specific agreement at rates as approved by the 
regulatory authorities.     

The U.S. utilities include in depreciation expense an amount allowed for regulatory purposes to be collected in current rates for 
future removal and site restoration costs. The Canadian utilities that collect future removal and site restoration costs in rates 
defer the revenue until the costs are incurred.     

Interest costs are capitalized on major additions to property, plant, and equipment until the asset is ready for its intended use. 
The interest rate used for calculating the interest costs to be capitalized is based on AltaGas' prior quarter actual borrowing 
long-term interest rate. 

Utilities capitalize an imputed carrying cost on assets during construction as authorized by regulatory authorities and the amount 
so  capitalized  is  an  allowance  for  funds  used  during  construction  (AFUDC).  AFUDC  is  the  amount  that  a  rate  regulated 
enterprise  is  allowed  to  recover  for  its  cost  of  financing  assets  under  construction.  Capitalized  overhead,  administrative 
expenses and AFUDC are included in the cost of the related assets and are recovered in rates charged to customers through 
depreciation expense, as allowed by the regulators. 

The range of useful lives for AltaGas’ PP&E is as follows: 

Gas assets 
Power generation assets 
Utilities assets 

Corporate assets 

3 - 45 years 
2 - 120 years 
3 - 80 years 

1-7 years 

As required by the respective regulatory authorities, net additions to utility assets at Heritage Gas and PNG are not depreciated 
until the year after they are brought into active service. Net additions to SEMCO's utility assets are amortized for one half year in 
the year in which they are brought into active service. Net additions to AUI's utility assets are amortized in the month they are 
brought into active service. 

Generally, when a regulated asset is retired or disposed of, there is no gain or loss recorded in the Consolidated Statement of 
Income. Any difference between the cost and accumulated depreciation of the asset, net of salvage proceeds, is charged to 
accumulated depreciation or another regulatory asset or liability account. It is expected that any gain or loss that is charged to 
accumulated depreciation or another regulatory account will be reflected in future depreciation expense when it is refunded or 
collected in rates. When a non-regulated asset is retired or disposed of from PP&E, the original cost and related accumulated 
depreciation and amortization are derecognized and any gain or loss is recorded in the Consolidated Statement of Income.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report68 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Leases are classified as either capital or operating. Leases that transfer substantially all the benefits and risks of ownership of 
property to AltaGas are accounted for as capital leases. 

Intangible Assets 

Intangible assets are recorded at cost. Intangible assets which have a finite useful life are amortized on a straight-line basis over 

their term or estimated useful life. The range of useful lives for intangible assets with a finite life is as follows: 

Energy services relationships     
Electricity service agreements 
Software 

Land rights 
Franchises and consents 
Extraction and Transmission (E&T) Contracts 

15 -19 years 
2 - 60 years 
3 - 10 years 

5 - 64 years 
9 - 25 years 
15 - 25 years 

Assets Held for Sale 

The Corporation classifies assets as held for sale when the carrying amount will be recovered through a sale transaction rather 
than through continuing use. This condition is met when Management approves and commits to a formal plan to sell the assets, 
the assets are available for immediate sale in their present condition, and Management expects the sale to close within the next 

12 months. Upon classifying an asset as held for sale, an asset is recorded at the lower of its carrying value or the estimated fair 
value less cost to sell. Assets held for sale are not depreciated or amortized. 

Business Acquisitions   

Business acquisitions are accounted for using the acquisition method. Under the acquisition method, assets and liabilities of the 
acquired entity are recorded at fair value at the date of acquisition. Acquisition-related costs are expensed as incurred. Goodwill 
represents the excess of purchase price over the fair value of the net assets acquired.   

Provision on Assets 

If facts and circumstances suggest that a long-lived asset or an intangible asset may be impaired, the carrying value is reviewed. 
If this review indicates that the value of the asset is not recoverable, as determined by the projected undiscounted cash flows 
related to the asset over its  remaining life, then the carrying value of the asset is reduced to its estimated fair value and an 
impairment loss is recognized.   

Goodwill is not subject to amortization, but assessed at least annually for impairment, or more often when events or changes in 
circumstances indicate that goodwill may be impaired. The annual assessment of goodwill is performed at the reporting unit 
level, which is an operating segment or one level below. The Corporation has the option to first assess qualitative factors to 
determine whether events or changes in circumstances indicate that the goodwill may be impaired. If a quantitative impairment 

test is performed, the first step of the two-step impairment test is to compare the fair value of the reporting unit to its carrying 
value (including goodwill). If the carrying value of the reporting unit exceeds the fair value, goodwill is reduced to its implied fair 
value and an impairment loss would be recorded in the Consolidated Statement of Income. 

Development Costs 

AltaGas  expenses  development  costs  as  incurred  unless  such  development  costs  meet  certain  criteria  related  to  technical, 
market, regulatory and financial feasibility for capitalization. Development costs are examined annually to ensure capitalization 
criteria continue to be met. When the criteria that previously justified the deferral of costs are no longer met, the unamortized 

balance is taken as a charge to income in the period when this determination is made. Development costs are amortized based 
on the expected period of benefit, beginning at the commencement of commercial operations. 

Investments Accounted for by the Equity Method   

The equity method of accounting is used for investments in which AltaGas has the ability to exercise significant influence, but 
does not have a controlling interest. Equity investments are initially measured at cost and are adjusted for the Corporation’s 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report69  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
proportionate  share  of  earnings  or  losses.  Equity  investments  are  increased  for  contributions  made  and  decreased  for 
distributions received. To the extent an investee undertakes activities necessary to commence its planned principal operations, 
the Corporation will capitalize interest costs associated with its investment during such period. 

An equity method investment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying 

amount of the investment may not be recoverable. When such condition is deemed other than temporary, the carrying value of 
the investment is written down to its fair value, and an impairment charge is recorded in the Consolidated Statement of Income. 

Financial Instruments 

All financial instruments are initially recorded at fair value unless they qualify for, and are designated under, a normal purchase 
and normal sale (NPNS) exemption. Subsequent measurement of the financial instruments is based on their classification. The 
financial assets are classified as "held-for-trading", "held-to-maturity", "loans and receivables", or "available-for-sale". Financial 
liabilities  are  classified  as  "held-for-trading"  or  other  financial  liabilities.  Subsequent  measurement  is  determined  by 

classification.     

A physical contract generally qualifies for the NPNS exemption if the transaction is reasonable in relation to AltaGas’ business 
needs and AltaGas has the ability, and intent, to deliver or take delivery of the underlying item. AltaGas continually assesses the 
contracts designated under the NPNS exemption and will discontinue the treatment of these contracts under this exemption 
where the criteria are no longer met. 

Held-for-trading financial assets and liabilities  may consist of swaps, options, forwards and equity securities. These financial 
instruments  are  initially  recorded  at  their  fair  value,  with  subsequent  changes  in  fair  value  recorded  in  net  income  under 

“unrealized gains and losses from risk management contracts” or “other income (loss)”. Held-to-maturity, loans and receivables, 
and other financial liabilities are recognized at amortized cost using the effective interest method.   

The available-for-sale classification includes non-derivative financial assets that are designated as available-for-sale or are not 
included in the other three classifications. Available-for-sale instruments are initially recorded at fair value, and changes to fair 
value are recorded through "Other comprehensive income" (OCI). Declines in fair value below the amortized cost basis that are 
other than temporary are reclassified out of OCI to earnings for the period. 

Investments in equity instruments not accounted for under the equity method that do not have a quoted market price in an active 

market are measured at cost. Income earned from these investments is included in the Consolidated Statement of Income under 
"Other income (loss)".   

Derivatives  embedded  in  other  financial  instruments  or  contracts  (the  host  instrument)  are  recorded  separately  and  are 
measured at fair value if the economic characteristics of the embedded derivative are not closely related to the host instrument, 
the  terms  of  the  embedded  derivative  are  the  same  as  those  of  a  standalone  derivative  and  the  entire  contract  is  not 
held-for-trading or accounted for at fair value. Changes in fair value are included in earnings.   

The fair values recorded on the Consolidated Balance Sheet reflect netting of the asset and liability positions where counterparty 
master netting arrangements contain provisions for net settlement.   

Transaction costs related to the acquisition of held-for-trading financial assets and liabilities are expensed as incurred.     

Transaction costs for obtaining debt financing other than line-of-credit arrangements are recognized as a direct deduction from 
the  related  debt  liability  on  the  Consolidated  Balance  Sheet.  Transaction  costs  related  to  line-of-credit  arrangements  are 
capitalized and included under "Long-term investments and other assets" on the Consolidated Balance Sheet. Premiums and 
discounts are netted against long-term debt on the Consolidated Balance Sheets. The deferred charges are amortized over the 

life of the related debt on an effective interest basis and included in “Interest expense” on the Consolidated Statement of Income. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report70 
 
 
 
 
 
 
 
 
 
 
 
   
Asset Retirement Obligations 

AltaGas recognizes asset retirement obligations in the period in which the legal obligation is incurred and a reasonable estimate 
of fair value can be determined. The associated asset retirement costs are capitalized as part of the carrying amount of the asset 
and are depreciated over the estimated useful life of the asset. The liability is increased due to the passage of time over the 
estimated period until the settlement of the obligation, with a corresponding charge to accretion expense for asset retirement 

obligations. 

Certain utility assets will have future legal obligations on retirement, but an asset retirement obligation has not been recorded 
due to its indeterminate life and corresponding indeterminable timing and scope of these asset retirement obligations. The U.S. 
Utilities recognize asset retirement obligations for some interim retirements, as expected by their regulators, whereas Canadian 
Utilities do not.   

Revenue Recognition 

The  Utilities  reporting  segment  recognizes  revenue,  presented  as  "revenue  from  regulated  operations"  in  the  Consolidated 
Statement of Income, when the product or services are delivered on the basis of regular meter readings or estimates of usage 
and  is  consistent  with  the  underlying  rate  setting  mechanism  mandated  by  the  applicable  regulatory  authority.  The  Utilities 
reporting segment bills gas distribution customers monthly, on a cycle basis and accrues revenue for service rendered to its 
customers but not billed at month-end. Storage customers are billed monthly for services provided in the preceding month and 
revenue is accrued for services rendered but not billed at month end. 

Revenue from services represents the proceeds from operating leases in the Gas and Power reporting segments where AltaGas 
is the lessor, and fees from the gathering, transportation, processing, and marketing of natural gas. Revenue from services are 

recognized at the time the service is rendered.   

Revenue  from  sales  represents  the proceeds  from  the commodity  sales  in the  Gas  and Power  reporting segments  and  are 
recognized at the time the product is delivered.   

Foreign Currency Translation 

Monetary assets and liabilities denominated in a foreign currency are converted to the functional currency using the exchange 
rate in effect at the balance sheet date. Adjustments resulting from the conversion are recorded in the Consolidated Statement of 
Income.  Non-monetary  assets  and  liabilities  are  converted  at  the  historical  exchange  rate  in  effect  at  the  transaction  date. 

Revenues and expenses are converted at the exchange rate applicable at the transaction date. 

For foreign entities with a functional currency other than Canadian dollars, AltaGas’ reporting currency, assets, and liabilities are 
translated into Canadian dollars at the rate in effect at the reporting date. Revenues and expenses are translated at average 
exchange rates during the reporting period. All adjustments resulting from the translation of the foreign operations are recorded 
in OCI.   

AltaGas may designate some of its U.S. dollar denominated long-term debt as a foreign currency hedge of its investment in 

foreign operations. Accordingly, foreign exchange gains and losses, from the dates of designation, on the translation of the U.S. 
dollar denominated long-term debt are included in OCI. 

Share Options and Other Compensation Plans 

Share options granted are recorded using fair value. Compensation expense is measured at the date of the grant using the 
Black-Scholes-Merton model and is recognized over the vesting period of the options. Consideration received by AltaGas on 
exercise of the share options is credited to shareholders’ equity. 

AltaGas has a medium-term incentive plan (MTIP) for employees and executive officers which includes two types of awards: 

restricted units (RUs) and performance units (PUs). Both RUs and PUs are valued based on the dividends declared during the 
vesting period and the weighted average share price of AltaGas' common shares multiplied by the units outstanding at the end of 
the vesting period. Upon vesting, the RUs and PUs are paid in cash or, at the election of AltaGas, its equivalent in common 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report71  
 
 
 
 
 
 
 
 
 
 
 
shares purchased from the market. The PUs are also subject to a performance multiplier ranging from 0 to 2 dependent on the 
Corporation's performance relative to performance targets agreed between the Corporation and the employees. Compensation 
expense  is  recognized  using  the  liability  method  and  is  recorded  as  operating  and  administrative  expense  over  the  vesting 
period. A change in value of the RUs or PUs is recognized in the period the change occurs. 

In addition, AltaGas has a deferred share unit plan (DSUP) for directors, officer and employees as an additional form of long-term 
variable compensation incentive. Although the DSUP is available to directors, officers and employees, AltaGas currently only 
grants deferred share units (DSUs) under the DSUP as a form of director compensation. The DSUs granted are fully vested upon 
being credited to a participant’s account, and the participant is entitled to payment at his or her termination date, and payment is 
not subject to satisfaction of any requirements as to any minimum period of membership or employment or other conditions. 
DSUs are accounted for at fair value. Compensation expense is determined based on the fair value of the DSUs on the date of 
the grant and fluctuations in fair value are recognized in the period the change occurs.   

Pension Plans and Post-Retirement Benefits 

AltaGas maintains defined benefit pension plans, defined contribution plans, and other post-retirement benefit plans for eligible 
employees. Contributions made by the Corporation to the defined contribution plans are expensed in the period in which the 
contribution occurs. 

The  cost  of  defined  benefit  pension  plans  and  post-retirement  benefits  is  actuarially  determined  using  the  projected  benefit 
method  prorated  based  on  service  and  Management’s  best  estimate  of  expected  plan  investment  performance,  salary 
escalation, retirement ages of employees and expected health care costs. Pension plan assets are measured at fair value. The 
expected return on plan assets is based on historical and projected rates of return for each asset class in the plan portfolio. The 

projected  benefit  obligation  is  discounted  using  the  market  interest  rate  on  high-quality  debt  instruments  with  cash  flows 
matching the timing and amount of benefit payments. Unrecognized actuarial gains and losses in excess of 10 percent of the 
greater of the benefit obligation and the fair value of plan assets along with any unamortized past service costs are amortized on 
a straight-line basis over the expected average remaining service life of active employees.  The expected average remaining 
service period of the active members covered by the defined benefit pension plans and post-retirement benefit plans is 12.7 
years and 13.5 years, respectively. 

AltaGas recognizes the overfunded or underfunded status of its pension and post-retirement benefit plans as either assets or 
liabilities in the Consolidated Balance Sheet. Unrecognized actuarial gains and losses and past service costs and credits that 

arise during the period are recognized in OCI.   

For certain regulated Utilities, the Corporation expects to recover pension expense in future rates and therefore records actuarial 
gains and losses as either regulatory assets or liabilities. The regulatory assets or liabilities are amortized on a straight-line basis 
over the expected average remaining service life of active employees. 

Income Taxes 

Income taxes for the Corporation and its subsidiaries are calculated using the liability method of accounting for income taxes. 

Under this method, deferred income tax assets and liabilities are determined based on differences between the carrying value 
and the tax basis of assets and liabilities and are measured using the enacted tax rates and laws that are in effect in the periods 
in which the differences are expected to be settled or realized. Deferred income tax assets are routinely reviewed and a valuation 
allowance is recorded to reduce the deferred tax assets if it is more likely than not that deferred tax assets will not be realized. 
The financial statement effects of an uncertain tax position are recognized when it is more likely than not, based on technical 
merits, that the position will be sustained upon examination by a taxing authority. The current and deferred tax impact is equal to 
the  largest  amount,  considering  possible  settlement  outcomes,  that  is  greater  than  50  percent  likely  of  being  realized  upon 
settlement with the taxing authorities.   

Investment tax credits are deferred and amortized over the estimated service lives of the related properties. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report72 
 
 
 
 
 
 
 
 
 
The  rate-regulated  natural  gas  distribution  subsidiaries  recognize  a  separate  regulatory  asset  or  liability  for  the  amount  of 
deferred income taxes expected to be recovered from, or paid to, customers in the future.     

Net Income per Share 

Basic net income per common share is computed using the weighted average number of common shares outstanding during the 

period. Dilutive net income per common share is calculated using the weighted average number of common shares outstanding 
adjusted for dilutive common shares related to the Corporation’s share-based compensation awards.   

The potentially dilutive impact of the share-based compensation awards is determined using the treasury stock method. Under 
the treasury stock method, awards are treated as if they had been exercised with any proceeds used to repurchase common 
stock at the average market price during the period. Any incremental difference between the assumed number of shares issued 
and purchased is included in the diluted share computation.     

Contingencies 

Liabilities for loss contingencies arising from claims, assessments, litigation and other sources are recorded when it is probable 
that a liability has been incurred and the amount can be reasonably estimated. Any such accruals are adjusted thereafter as 
additional information becomes available or circumstances change. 

ADOPTION OF NEW ACCOUNTING STANDARDS 

Effective  January  1,  2017,  AltaGas  adopted  the  following  Financial  Accounting  Standards  Board  (FASB)  issued  Accounting 
Standards Updates (ASU): 

  ASU No. 2015-11 “Inventory: Simplifying the Measurement of Inventory”. The amendments in this ASU require an entity 
to measure inventory at the lower of cost and net realizable value. The  adoption of this ASU did not have a material 
impact on AltaGas' consolidated financial statements; 

  ASU No. 2016-05 “Derivatives and Hedging: Effect of Derivative Contract Novations on Existing Hedge Accounting 
Relationships”. The amendments in this ASU clarify that a change in the counterparty to a derivative instrument that has 
been designated as the hedging instrument under Topic 815 does not, in and of itself, require de-designation of that 

hedging relationship provided that all other hedge accounting criteria continue to be met. The adoption of this ASU did 
not have a material impact on AltaGas' consolidated financial statements; 

  ASU No. 2016-06, “Derivatives and Hedging: Contingent Put and Call Options in Debt Instruments”. The amendments 
in this ASU clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment 
of principal on debt instruments are clearly and closely related to their debt hosts. The adoption of this ASU did not have 
a material impact on AltaGas' consolidated financial statements; 

  ASU  No.  2016-07  “Investments  -  Equity  Method  and  Joint  Ventures  Investments:  Simplifying  the  Transition  to  the 
Equity  Method  of  Accounting”.  The  amendments in  this  ASU  eliminate  the  requirement  to  retrospectively  apply  the 
equity method as a result of an increase in the level of ownership interest or degree of influence. The adoption of this 
ASU did not have a material impact on AltaGas' consolidated financial statements; and 

  ASU  No.  2016-09  “Stock  Compensation:  Improvements  to  Employee  Share-Based  Payment  Accounting”.  The 
amendments in this ASU focus on simplifying several areas of the accounting for share-based payment transactions, 
including  the  accounting  for  income  taxes,  forfeitures,  and  statutory  withholding  requirements,  as  well  as  the 
classification on the statement of cash flow. Upon adoption of this ASU, AltaGas elected as an accounting policy to 
account for forfeitures when they occur instead of estimating the number of awards that are expected to vest. The ASU 
requires this change  to be  adopted  using  the modified  retrospective approach  and as  a  result,  AltaGas  recorded a 
decrease  to  accumulated  retained  earnings  of  approximately  $1  million  and  an  increase  to  contributed  surplus  of 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report73  
 
 
 
 
 
 
 
 
 
 
 
 
approximately $1 million. The deferred tax impact was immaterial. The remaining amendments to this ASU did not have 
a material impact on AltaGas' consolidated financial statements. 

FUTURE CHANGES IN ACCOUNTING PRINCIPLES 

In  May  2014,  FASB  issued  ASU  No.  2014-09  “Revenue  from  Contracts  with  Customers”,  which  will  replace  numerous 
requirements in U.S. GAAP, including industry-specific requirements, and provide companies with a single revenue recognition 
model for recognizing revenue from contracts with customers. The core principle of the amendments in this ASU is that an entity 
should  recognize  revenue  to  depict  the  transfer  of  promised  goods  or  services  to  customers  in  an  amount  that  reflects  the 
consideration  to  which  the  entity  expects  to  be  entitled  in  exchange  for  those  goods  or  services.  The  amendments  specify 
various disclosure requirements that would enable users of financial statements to understand the nature, amount, timing, and 
uncertainty of revenue and cash flows arising from contracts with customers.  In March 2016, FASB issued ASU No. 2016-08 
“Principal versus Agent Consideration”. The amendments in this ASU clarify the implementation guidance on the principal versus 

agent  considerations  in  the  new  revenue  recognition  standard.  In  April  2016,  FASB  issued  ASU  No.  2016-10  “Identifying 
Performance Obligation and Licensing”, which reduces the complexity when applying the guidance for identifying performance 
obligations  and  improves  the  operability  and  understandability  of  the  license  implementation  guidance.  In  May  2016,  FASB 
issued  ASU  No.  2016-12  “Narrow  Scope  Improvements  and  Practical  Expedients”,  clarifying  several implementation  issues, 
including  collectability,  presentation  of  sales  taxes,  non-cash  consideration,  contract  modification,  completed  contracts,  and 
transition. In December 2016, FASB issued ASU No. 2016-20 “Technical Corrections and Improvements”, which makes minor 
technical corrections and improvements to the new revenue standard. The new revenue standard will be effective for annual and 
interim periods beginning on or after December 15, 2017. The ASU permits the use of either the full retrospective or modified 
retrospective  transition  method  and  AltaGas  has  elected  the  modified  retrospective  transition  method.  In  2016,  AltaGas 

established  a  cross-functional  implementation  team  consisting  of  representatives  from  across  all  the  operating  segments.  A 
scoping exercise was completed for each of AltaGas’ operating segments and AltaGas selected all material contracts or contract 
groups for review to identify potential impacts under the new standard. AltaGas has completed the contracts review and have not 
identified  any  material  changes  in  how  revenues  are  recognized  under  the  new  standard.  AltaGas  has  started  a process  to 
compile the information needed to meet the new disclosure requirements and noted that there will be changes to the revenue 
disclosures based on additional requirements under the new standard regarding the disaggregation of revenue as well as details 
about performance obligations, and contracts assets and liabilities.   

In January 2016, FASB issued ASU No. 2016-01 “Recognition and Measurement of Financial Assets and Financial Liabilities” 

which revises an entity’s accounting related to (1) the classification and measurement of investments in equity securities and (2) 
the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure 
requirements associated with the fair value of financial instruments. The amendments in this ASU are effective for fiscal years 
beginning after December 15, 2017, including interim periods within those fiscal years. Upon adoption, entities will be required to 
make a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which 
the guidance is effective. The guidance on equity securities without readily determinable fair value will be applied prospectively 
to all equity investments that exist as of the date of adoption of the standard. Upon adoption, AltaGas will no longer be able to 
classify equity securities with readily determinable fair values as available-for-sale and any changes in fair value will be reported 

through earnings instead of other comprehensive income. The remaining provisions of this ASU are not expected to have a 
material impact on AltaGas’ financial statements.     

In  February  2016,  FASB  issued  ASU  No.  2016-02  “Leases”,  which  requires  lessees  to  recognize  on  the  balance  sheet  a 
right-of-use  asset  and  a  lease  liability  for  all  leases  with  lease  terms  greater  than  12  months.  Lessor  accounting  remains 
substantially unchanged, however, the ASU modifies what qualifies as a sales-type and direct financing lease and eliminates the 
real  estate-specific  provisions  included  in  ASC  840.  The  ASU  also  requires  additional  disclosures  regarding  leasing 
arrangements. In January 2018, FASB issued ASU No. 2018-01 “Land Easement Practical Expedient for Transition to Topic 
842” providing entities with an optional election not to evaluate existing and expired land easements not previously accounted for 

as leases under ASC 840 using the provisions of ASC 842. The amendments to the new leases standard are effective for fiscal 
years beginning after December 15, 2018, including interim periods within those fiscal years. In transition, lessees and lessors 
are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report74 
 
 
 
 
 
approach. AltaGas is currently performing a scoping exercise by gathering a complete inventory of lease contracts in order to 
evaluate the impact of adopting ASC 842 on its consolidated financial statements, but expects that the new standard will have an 
impact on the Corporation’s balance sheet as all operating leases will need to be reflected on the balance sheet upon adoption. 
In addition, AltaGas currently expects to utilize the transition practical expedients which allow entities to not have to reassess 
whether an arrangement contains a lease under the provisions of ASC 842. 

In  June  2016,  FASB  issued  ASU  No.  2016-13  “Financial  Instruments  –  Credit  Losses:  Measurement  of  Credit  Losses  on 
Financial  Instruments”.  The  amendments  in  this  ASU  replace  the  current  “incurred  loss”  impairment  methodology  with  an 
“expected loss” model for financial assets measured at amortized cost. The amendments in this ASU are effective for fiscal 
periods beginning after December 15, 2020, and interim periods within those fiscal periods. Early adoption is permitted. AltaGas 
is currently assessing the impact of this ASU on its consolidated financial statements. 

In August 2016, FASB issued ASU No. 2016-15 “Statement of Cash Flows: Classification of Certain Cash Receipts and Cash 

Payments”. The amendments in this ASU clarify the classification of certain cash flow transactions on the statement of cash flow. 

The amendments in this ASU are effective for fiscal periods beginning after December 15, 2017, and interim periods within those 
fiscal  periods.  Early  adoption is  permitted.  The  adoption  of this  ASU  is  not expected  to have  a  material impact on  AltaGas’ 
consolidated financial statements. 

In October 2016, FASB issued ASU No. 2016-16 “Income Taxes: Intra-Entity Transfers of Assets Other Than Inventory”. The 
amendments in this ASU revise the accounting for income tax consequences on intra-entity transfers of assets by requiring an 
entity to recognize current and deferred tax on intra-entity transfers of assets other than inventory when the transfer occurs. The 
amendment in this ASU is effective for annual periods beginning after December 15, 2017, and interim periods within those 

annual  periods.  An  entity  should  apply  the  amendments  in  this  ASU  on  a  modified  retrospective  basis  through  a 
cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this ASU 
is not expected to have a material impact on AltaGas’ consolidated financial statements. 

In November 2016, FASB issued ASU No. 2016-18 “Statement of Cash Flows: Restricted Cash”. The amendments in this ASU 
require  those  amounts  deemed  to  be  restricted  cash  and  restricted  cash  equivalents  to  be  included  in  the  cash  and  cash 
equivalents balance on the statement of cash flows. The amendments in this ASU are effective for annual periods beginning 
after December 15, 2017, and interim periods within those annual periods. An entity should apply the amendments in this ASU 
retrospectively to each period presented. Early adoption is also permitted. The adoption of this ASU is not expected to have  a 

material impact on AltaGas’ consolidated cash flow statements. 

In  January  2017,  FASB  issued  ASU  No.  2017-01  “Business  Combinations:  Clarifying  the  Definition  of  a  Business”.  The 
amendments in this ASU change the definition of a business to assist entities with evaluating when a set of transferred assets 
and activities is a business. The amendments in this ASU are effective for annual periods beginning after December 15, 2017, 
and interim periods within those annual periods. An entity should apply the amendments in this ASU on a prospective basis on or 
after the effective date. AltaGas will apply the amendments prospectively. 

In  January  2017,  FASB  issued  ASU  No.  2017-04  “Intangibles  –  Goodwill  and  Other:  Simplifying  the  Test  for  Goodwill 
Impairment”. The ASU removes Step 2 of the goodwill impairment test, eliminating the requirement to determine the fair value of 
individual assets and liabilities of a reporting unit to measure the goodwill impairment. An entity should adopt the amendments in 
this  ASU  for annual  periods  beginning after  December  15, 2020, and  interim  periods  within  those annual  periods.  An entity 
should apply the amendments in this ASU on a prospective basis. Early adoption is permitted. AltaGas currently expects to apply 
the amendments prospectively. 

In February 2017, FASB issued ASU No. 2017-05 “Other Income – Gains and Losses from the De-recognition of Nonfinancial 
Assets: Clarifying the Scope of Asset De-recognition Guidance and Accounting for Partial Sales of Nonfinancial Assets”. The 

amendments in this ASU clarify the scope of ASC 610-20 as well as the accounting for partial sales of nonfinancial assets. The 
effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report75  
 
 
 
 
 
 
 
 
 
requirements for ASU No. 2014-09, which is effective for fiscal years and interim periods beginning on or after December 15, 
2017. The adoption of this ASU is not expected to have a material impact on AltaGas’ consolidated financial statements. 

In  March  2017,  FASB  issued  ASU  No.  2017-07  “Compensation  –  Retirement  Benefits:  Improving  the  Presentation  of  Net 
Periodic Pension Cost and Net Periodic Postretirement Benefit Cost”. The amendments in this ASU revise the presentation of 

net periodic pension cost and net periodic postretirement benefit cost on the income statement and limit the components that are 
eligible for capitalization in assets to only the service cost component. The amendments in this ASU are effective for annual 
periods beginning  after  December  15,  2017,  and  interim periods  within  those  annual  periods.  The amendments  in  this  ASU 
should be applied retrospectively for the presentation of the service cost component and the other components of net benefit 
cost  in  the  income  statement  and  prospectively,  on  and  after  the  effective  date,  for  the  capitalization  of  the  service  cost 
component. The adoption of this ASU is not expected to have a material impact on AltaGas’ consolidated financial statements. 

In May 2017, FASB issued ASU No. 2017-09 “Compensation – Stock Compensation: Scope of Modifications Accounting”. The 

amendments  in  this  ASU  provide  guidance  on  the  types  of  changes  to  the  terms  or  conditions  of  share-based  payment 
arrangements to which an entity would be required to apply modification accounting. The amendments in this ASU are effective 
for annual periods beginning after December 15, 2017, and interim periods within those annual periods. An entity should apply 
the amendments in this ASU on a prospective basis on or after the effective date. Early adoption is permitted. AltaGas will apply 
the amendments prospectively. 

In August 2017, FASB issued ASU No. 2017-12 “Derivatives and Hedging – Targeted Improvements to Accounting for Hedging 
Activities”. The amendments in this ASU improves the financial reporting of hedging relationships to better portray the economic 
results of an entity’s risk management activities in its financial statements and make certain targeted improvements to simplify 

the application of hedge accounting. The amendments in this ASU are effective for annual periods beginning after December 15, 
2018, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this ASU is not expected to 
have a material impact on AltaGas’ consolidated financial statements.   

3.  ACQUISITIONS AND DISPOSITIONS 

Pending Acquisition of WGL Holdings, Inc. (WGL)   

On January 25, 2017, the Corporation entered into the Merger Agreement to indirectly acquire WGL. Pursuant to the Merger 
Agreement,  following  the  consummation  of  the  WGL  Acquisition,  WGL  common  shareholders  will  receive  US$88.25  per 

common share in cash, which represents a total enterprise value of approximately US$7.2 billion, including the assumption of 
approximately US$2.7 billion of debt as at December 31, 2017.   

WGL is a diversified energy infrastructure company and the sole common shareholder of Washington Gas, a regulated natural 
gas utility headquartered in Washington, D.C., serving approximately 1.2 million customers in Maryland, Virginia, and the District 
of Columbia. WGL has a growing midstream business with investments in natural gas gathering infrastructure and regulated gas 
pipelines  in  the  Marcellus/Utica  gas  formation  located  in  the  northeast  United  States,  with  capabilities  for  connections  to 
marine-based  energy  export  opportunities  via  the  North  American  Atlantic  coast  through  the  Cove  Point  LNG  Terminal  in 

Maryland being developed by a third party, which is currently in the final stages of commissioning. WGL also owns contracted 
clean  power  assets,  with  a  focus  on  distributed  generation  and  energy  efficiency  assets  throughout  the  United  States.  In 
addition, WGL  has  a  retail  gas  and  power  marketing  business  with  approximately  222,000  customers  in  Maryland,  Virginia, 
Delaware, Pennsylvania and the District of Columbia. Upon completion of the WGL Acquisition, AltaGas expects that it will have 
over $22 billion of assets and approximately 1.8 million rate regulated gas customers. 

Consummation  of  the WGL  Acquisition  is  subject  to  certain  closing  conditions,  including  certain  regulatory  and  government 
approvals, including approval by the Public Service Commission of the District of Columbia (PSC of DC), the Maryland Public 
Service Commission (PSC of MD), the Commonwealth of Virginia State Corporation Commission (SCC of VA), the United States 

Federal Energy Regulatory Commission (FERC), and the Committee on Foreign Investment in the United States (CFIUS), as 
well as expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 
1976, as amended (HSR Act).   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report76 
 
 
 
 
 
 
 
 
Regulatory applications were filed with the PSC of DC, the PSC of MD, and the SCC of VA on April 24, 2017. On the same date, 
AltaGas and WGL also filed their voluntary Joint Notice to the CFIUS, and an application with FERC. On May 10, 2017, WGL 
common shareholders voted in favor of the Merger Agreement governing the proposed WGL Acquisition. On July 6, 2017, FERC 
approved the transaction, finding it to be consistent with the public interest. Also as of July 17, 2017, when the waiting period 

required by Section 7A(b)(1) of the HSR Act expired, the merger was deemed approved by the Federal Trade Commission and 
the Department of Justice, such approval being valid for one year. On July 28, 2017, CFIUS provided its approval for the WGL 
Acquisition. On October 20, 2017, the SCC of VA approved the WGL Acquisition. In Maryland, the hearing before the PSC of MD 
concluded on October 16, 2017, and on December 4, 2017 AltaGas and WGL announced that they had reached a settlement 
agreement with several of the intervenors in the Maryland proceeding. As a result, AltaGas and WGL filed a stipulation with the 
PSC of MD to extend the deadline for issuing its decision. The PSC of MD approved this request moving the date for a decision 
to on or before April 4, 2018. The hearing before the PSC of DC concluded on December 13, 2017, and a decision is expected to 
follow in the first half of 2018. On January 11, 2018, pursuant to the terms of the Merger Agreement, AltaGas elected to extend 

the Outside Date (as defined in the Merger Agreement) to July 23, 2018. 

AltaGas believes that closing of the WGL Acquisition will occur in mid-2018. AltaGas plans to fund the WGL Acquisition with the 
proceeds from its aggregate $2.6 billion bought deal and private placement of subscription receipts, which closed in the first 
quarter  of  2017  (see  Subscription  Receipts  section  below).  In  addition,  AltaGas  has  US$3  billion  available  under  its  fully 

committed  bridge  facility,  which  can  be  drawn  at  the  time  of  closing. With  all  funding  required  for  the  closing  of  the  WGL 
Acquisition in place, AltaGas can evaluate and pursue its asset sale process in a prudent and timely fashion in step  with the 
regulatory process and consistent with AltaGas’ long term strategic vision. Management has presently identified a total of over 
$4.0  billion  of  assets  from  AltaGas’  Gas,  Power  and  Utilities  business  segments  in  respect  of  which  it  is  evaluating  various 

options for monetization that could include the sale of either minority and/or controlling interests. Management expects to realize 
over $2 billion from its asset sale process in 2018. With the present optionality available to AltaGas and in light of a number of 
factors including recent developments in the California Resource Adequacy markets, AltaGas has discontinued the previously 
announced sale process of its California power assets. AltaGas will instead continue to pursue other structuring and commercial 
opportunities to unlock the value of the California assets. Additional financing steps could include offerings of senior debt, hybrid 
securities, and equity-linked securities (including preferred shares), subject to prevailing market conditions. 

Subscription Receipts 

On February 3, 2017, the Corporation issued approximately 80.7 million subscription receipts pursuant to a private placement 
and public offering to partially fund the WGL Acquisition at a price of $31 each for total gross proceeds of approximately $2.5 
billion. On March 3, 2017, the over-allotment option was partially exercised for an additional 3.8 million subscription receipts for 
gross proceeds of approximately $118 million. The sale of the additional subscription receipts pursuant to the over-allotment 
option  brings  the  aggregate  gross  proceeds  to  approximately  $2.6  billion.  Each  subscription  receipt  entitles  the  holder  to 
automatically  receive  one  common  share  upon  closing  of  the  WGL  Acquisition.  While  the  subscription  receipts  remain 

outstanding, holders will be entitled to receive cash payments (Dividend Equivalent Payments) per subscription receipt that are 
equal to dividends declared on each common share. Such Dividend Equivalent Payments will have the same record date as the 
related common share dividend and will be paid to holders of the subscription receipts concurrently with the payment date of 
each such common share dividend. The Dividend Equivalent Payments will be paid first out of any interest on the escrowed 
funds and then out of the escrowed funds. If the Merger Agreement is terminated after the common share dividend declaration 
date, but before the common share dividend record date, subscription receipt holders of record on the termination date shall 
receive a pro-rata payment of the dividend as the Dividend Equivalent Payment. If the Merger Agreement is terminated on a 
record date or following a record date but on or prior to the dividend payment date, holders will be entitled to receive the  full 

Dividend Equivalent Payment.   

The net proceeds from the sale of the subscription receipts are held by an escrow agent pending, among other things, receipt of 
all regulatory and government approvals required to finalize the WGL Acquisition and confirmation that the parties to the Merger 
Agreement  are  able  to  complete  the  WGL  Acquisition  in  all  material  respects  in  accordance  with  the  terms  of  the  Merger 
Agreement, but for the payment of the purchase price, and AltaGas has available to it all other funds required to complete the 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report77  
 
 
 
 
 
 
 
WGL Acquisition. If the escrow release notice and direction is not delivered on or prior to 5:00 pm (Calgary time) on September 
4, 2018, the Corporation will be required to make a termination payment equal to the aggregate issue price of such holder’s 
subscription receipts plus any unpaid Dividend Equivalent Payments owing to such holders of subscription receipts. 

Edmonton Ethane Extraction Plant (EEEP) 

Effective January 1, 2016, AltaGas acquired the remaining 51 percent interest in EEEP for cash consideration of approximately 
$21.0 million, increasing its ownership interest to 100 percent. AltaGas accounted for the acquisition as a business combination 
achieved in stages and remeasured the previously held 49 percent interest in EEEP at fair value on the acquisition date using the 
discounted  cash  flow  approach.  The  significant  inputs  included  contracted  cash  flows  for  the  facility,  forecasted  commodity 
prices, and projected operating costs based on historical pattern. No gain or loss was recorded as a result of the remeasurement. 
Upon  the  acquisition  of  control,  AltaGas  began  consolidating  the  results  of  EEEP.  Prior  to  the  acquisition,  AltaGas 
proportionately consolidated the 49 percent interest in EEEP. 

Below is the final purchase price allocation: 

Fair value of net assets acquired 
Property, plant and equipment 
Asset retirement obligations 
Deferred income taxes 

$ 

$ 

  67.1  
  (15.0) 
  (3.3) 
  48.8  

The total estimated fair value of $48.8 million included $21.0 million of cash paid to acquire the remaining 51 percent interest and 
$27.8 million related to the previously held interest.   

Dispositions 

In March 2017, AltaGas completed the disposition of the Ethylene Delivery Systems (EDS) and the Joffre Feedstock Pipeline 
(JFP) transmission assets in the Gas segment to Nova Chemicals Corporation for gross proceeds of approximately $67.0 million. 

AltaGas recognized a pre-tax loss on disposition of approximately $3.4 million in the consolidated statement of income under the 
line item “Other income” for the year ended December 31, 2017 related to this disposition. 

On February 29, 2016, AltaGas completed the disposition of certain non-core natural gas gathering and processing assets in the 
Gas segment to Tidewater Midstream and Infrastructure Ltd. (Tidewater) for total gross consideration of $30.0 million in cash and 
approximately 43.7 million of common shares of Tidewater valued at $1.48 per share (the Tidewater Gas Asset Disposition). The 
assets were located primarily in central and north central Alberta and totaled approximately 490 Mmcf/d of gross licensed natural 
gas  processing  capacity.  AltaGas  recognized  a  pre-tax  gain  on  disposition  of  $4.5  million  in  the  Consolidated  Statement  of 
Income under the line item “Other income” for the year ended December 31, 2016. In addition, AltaGas recorded a tax recovery 

of $10.3 million related to the asset sale for the year ended December 31, 2016. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report78 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
4.  ASSETS HELD FOR SALE 

As at 
Assets held for sale 
Accounts receivable 
Property, plant and equipment 
Intangible assets 
Goodwill 

Liabilities associated with assets held for sale 
Asset retirement obligations 

December 31, 
2017 

December 31, 
2016 

$ 

$ 

$ 
$ 

  0.3   $ 
  5.3   
  0.1  
  0.3  
  6.0   $ 

  0.3   $ 
  0.3   $ 

  — 
  67.3  
  — 
  3.4  
  70.7  

  0.4  
  0.4  

As  at  December  31,  2017,  AltaGas  committed  to  the  sale  of  certain  non-core  facilities  in  the  Gas  segment  in  two  separate 
transactions. Accordingly, the carrying value of the assets and liabilities were classified as held for sale. A pre‑tax provision of 

$6.4 million on property, plant and equipment and a pre‑tax provision of $0.2 million on allocated goodwill were recognized due 

to the reduction of the carrying value of the assets to fair value less costs to sell. Both transactions closed in early 2018. 

In March 2017, AltaGas completed the sale of the EDS and JFP transmission assets in the Gas segment to Nova Chemicals 
Corporation that were presented as assets held for sale as at December 31, 2016. Please refer to Note 3 for further details.   

5.  INVENTORY 

As at 
Natural gas held in storage 
Other inventory 

6.  PROPERTY, PLANT AND EQUIPMENT 

$ 

December 31, 
2017 
  133.9   $ 
  67.2  
  201.1   $ 

December 31, 
2016 
  172.6  
  48.4  
  221.0  

$ 

As at 

December 31, 2017 

December 31, 2016 

Gas 
Power 
Utilities 
Corporate 
Reclassified to assets held for sale (note 4) 

Cost 

Accumulated 
amortization 

Net book 
value 
  (630.8)  $    1,985.0  
    2,725.1  
  (232.1) 
    2,056.9  
  (193.5) 
  35.2  
  (30.1) 
  (67.3) 
  58.9  
$    7,970.8   $    (1,281.0)  $    6,689.8   $    7,762.5   $    (1,027.6)  $    6,734.9  

Net book 
value 
  (636.3)  $    2,165.1   $    2,615.8   $ 
  (392.3) 
  (226.1) 
  (37.7) 
  11.4  

$    2,801.4   $ 
    2,874.8  
    2,245.4  
  65.9  
  (16.7) 

    2,957.2  
    2,250.4  
  65.3  
  (126.2) 

    2,482.5  
    2,019.3  
  28.2  
  (5.3) 

Accumulated 
amortization 

Cost 

Interest  capitalized  on  long-term  capital  construction  projects  for  the  year  ended  December 31,  2017  was  $10.8  million 
(2016 - $10.9 million).   

As at December 31, 2017, the Corporation had approximately $269.5 million (December 31, 2016 - $183.4 million) of capital 
projects under construction that were not yet subject to amortization.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report79  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Depreciation  expense  related  to  property,  plant  and  equipment  (including  assets  under  capital  leases)  for  the  year  ended 
December 31, 2017 was $239.7 million (2016 - $229.3 million).   

7.  INTANGIBLE ASSETS 

As at   

December 31, 2017 

December 31, 2016 

Accumulated 
amortization 

Net book 
value 
  13.2   $ 

Accumulated 
amortization 

Cost 
  53.7   $ 

E&T contracts 
Electricity service agreements 
Energy services relationships 
Software 
Land rights 
Franchises and consents 
Reclassified to assets held for sale (note 4) 

$ 

$ 

Cost 
  26.6   $ 

  603.1  
  10.2  
  126.8  
  11.0  
  7.4  
  (0.1) 
  785.0   $ 

  (13.4)  $ 

  (108.5) 
  (8.1) 
  (61.6) 
  (2.4) 
  (2.2) 
  — 
  (196.2)  $ 

  494.6  
  2.1  
  65.2  
  8.6  
  5.2  
  (0.1) 
  588.8   $ 

  628.8  
  10.2  
  118.7  
  10.9  
  5.6  
  (27.1) 
  800.8   $ 

Net book 
value 
  14.5  
  591.6  
  2.8  
  73.1  
  8.7  
  3.6  
  — 
  694.3  

  (39.2)  $ 
  (37.2) 
  (7.4) 
  (45.6) 
  (2.2) 
  (2.0) 
  27.1  
  (106.5)  $ 

Amortization  expense  related  to  intangible  assets  for  the  year  ended  December 31,  2017  was  $42.7  million  (2016  -  $42.2 

million). 

As at December 31, 2017, the Corporation excluded $11.2 million (December 31, 2016 - $8.0 million) of software assets under 
development as well as assets with indefinite life from the asset base subject to amortization. 

The following table sets forth the estimated amortization expense of intangible assets, excluding any amortization of assets not 
yet subject to amortization as well as assets with indefinite life, for the years ended December 31: 

2018 
2019 
2020 
2021 
2022 
Thereafter 

8.  GOODWILL 

As at   
Balance, beginning of year 
Foreign exchange translation 
Reclassified to assets held for sale (note 4) 
Balance, end of year 

9.  PROVISIONS ON ASSETS 

Year ended December 31 
Power   
Gas   

Power 

$ 
$ 
$ 
$ 
$ 
$ 

  40.0  
  38.9  
  34.8  
  32.9  
  30.2  
  400.8  

$ 

December 31,  December 31, 
2016 
  877.3  
  (17.9) 
  (3.4) 
  856.0  

2017 
  856.0   $ 
  (38.4) 
  (0.3) 
  817.3   $ 

$ 

2017 
  133.0   $ 
  6.6   
  139.6   $ 

$ 

$ 

2016 
  — 
  — 
  — 

In  2017,  AltaGas  recorded  pre-tax  provisions  on  assets  related  to  the  Hanford  and  Henrietta  gas-fired  peaking  plants  in 
California and certain non-core development stage gas-fired peaking projects in California and Alberta for $133.0 million. The 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report80 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
pre-tax provisions of $133.0 million were comprised of $48.5 million on intangible assets and $84.5 million on property, plant and 
equipment. No provisions on assets were recorded in 2016 for the Power segment.   

Gas 

In 2017, AltaGas recorded a pre-tax provision on assets of $6.6 million on a non-core gas processing facility that was classified 

as held for sale (See Note 4). No provisions on assets were recorded in 2016 for the Gas segment.    

10.  LONG-TERM INVESTMENTS AND OTHER ASSETS 

As at   
Investments in publicly-traded entities 
Loan to affiliate (see note 27) 
Deferred lease receivable 
Debt issuance costs associated with credit facilities 
Refundable deposits 
Loan to employee (see note 27) 
Prepayment on long-term service agreements 
Post-retirement benefit (see note 25) 
Subscription receipts issuance costs 
Other 

$ 

December 31, 
2017 
  95.0   $ 
  75.0  
  29.0  
  20.3  
  14.9  
  — 
  68.1  
  — 
  1.7  
  8.6  
  312.6   $ 

December 31, 
2016 
  49.4  
  62.5  
  16.3  
  5.1  
  39.0  
  0.8  
  8.7  
  2.8  
  — 
  4.7  
  189.3  

$ 

The following table summarizes the Corporation’s available-for-sale investments in equity securities: 

As at   

Amortized cost 
Gross unrealized gains 
Gross unrealized losses 

Fair value 

11. VARIABLE INTEREST ENTITY 

$ 

December 31, 
2017 
  28.7   $ 
  2.5  
  (9.6) 
  21.6   $ 

December 31, 
2016 
  21.7  
  23.2  
  — 
  44.9  

$ 

On  May  5,  2017,  AltaGas  LPG  Limited  Partnership  (AltaGas  LPG),  a  wholly-owned  subsidiary  of  AltaGas,  and  Vopak 
Development  Canada  Inc.  (Vopak),  a  wholly-owned  subsidiary  of  Koninklijke  Vopak  N.V.  (Royal  Vopak),  a  public  company 
incorporated under the laws of the Netherlands, formed the Ridley Island LPG Export Limited Partnership (RILE LP) to develop, 
own and operate the Ridley Island Propane Export Terminal (RIPET). AltaGas’ subsidiaries hold a 70 percent interest while 

Vopak holds a 30 percent interest in RILE LP. The construction cost of RIPET, which is estimated to be $450 to $500 million, will 
be funded by AltaGas LPG and Vopak in proportion to their respective interests in RILE LP. As part of the arrangements, AltaGas 
entered into a long-term agreement for the capacity of RIPET  with  RILE LP, and AltaGas and certain of its subsidiaries will 
provide construction and operating services to RILE LP.   

AltaGas  has  determined  that  RILE  LP  is  a  VIE  in  which  it  holds  variable  interests  and  is  the  primary  beneficiary.  In  the 
determination that AltaGas is the primary beneficiary of the VIE, AltaGas noted that it has the power to direct the activities that 
most significantly impact the VIE’s economic performance through the construction, operating and marketing services provided 
to RILE LP. In addition, AltaGas has the obligation to absorb the losses and the right to receive the benefits that could potentially 

be significant to RILE LP through the long-term agreement for the capacity of RIPET. As such, AltaGas has consolidated RILE 
LP and recorded $20.0 million of the $24.1 million proceeds received from Vopak on formation of RILE LP as a non-controlling 
interest with the remainder of the proceeds less deferred tax recognized as contributed surplus in the amount of $3.0 million. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report81  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
The following table represents amounts included in the consolidated balance sheets attributable to this VIE: 

As at   

Accounts receivable 

Property, plant and equipment 

Long-term investments and other assets 

Net assets   

December 31, 

December 31, 

$ 

$ 

$ 

2017 

1.4 
84.3  

48.0 

133.7 

$ 

2016 

  — 

  — 

  — 

  — 

The assets of RILE LP are the property of RILE LP and are not available to AltaGas for any other purpose.  RILE LP’s asset 
balances can only be used to settle its own obligations. The liabilities of  RILE LP do not represent additional claims against 
AltaGas’ general assets. AltaGas’ exposure to loss as a result of its interest as a limited partner is its net investment. AltaGas and 
Royal Vopak have provided limited guarantees for the obligations of their respective subsidiaries for the construction cost of 
RIPET.  Upon  commencement  of  commercial  operations  at  RIPET,  the  terms  of  the  long-term  capacity  agreement  between 
AltaGas LPG and RILE LP provide for a return on and of capital and reimbursement of RIPET operating costs by AltaGas LPG in 
accordance with the terms set out in the agreement. 

12. INVESTMENTS ACCOUNTED FOR BY THE EQUITY METHOD 

Description 
AltaGas Idemitsu Joint Venture LP (AIJVLP) 
ASTC Power Partnership (ASTC) (a) 
Craven County Wood Energy LP 
Eaton Rapids Gas Storage System 
Grayling Generating Station LP 
Inuvik Gas Ltd.   
Sarnia Airport Storage Pool LP 
Petrogas Preferred Shares 
Tidewater Midstream and Infrastructure Ltd.   

Location 
Canada 

Canada 
United States 
United States 
United States 
Canada 
Canada 
Canada 
Canada 

(a) 

  ASTC was dissolved in 2016. 

Carrying value as at 
December 31  

2017 
  323.3   $ 
  — 
  20.9  
  26.4  
  27.6  
  — 
  18.8  
  150.0  
  — 
  567.0   $ 

2016  
  307.2   $ 
  — 
  22.9  
  27.9  
  30.1  
  — 
  19.2  
  150.0  
  64.1  
  621.4   $ 

Ownership 
Percentage  

50  $ 
n/a 
50 
50 
50 
33.333 
50 
n/a 
n/a 

$ 

Equity income (loss) 
for the   
  year ended   
December 31 

2017 
  6.6   $ 
  — 
  3.3  
  2.5  
  3.5  
  — 
  1.0  
  12.8  
  1.7  
  31.4   $ 

2016 
  (0.4) 

  (11.1) 
  0.2  
  2.6  
  4.1  
  — 
  0.9  
  5.9  
  1.2  
  3.4  

Summarized  combined  financial  information,  assuming  a  100  percent  ownership  interest  in  the  AltaGas’  equity  investments 
listed above, is as follows: 

Year ended December 31 
Revenues 
Expenses 

As at December 31 
Current assets 
Property, plant and equipment 
Intangible assets 
Long-term investments and other assets 
Current liabilities 
Other long-term liabilities 

2017  
  110.6   $ 
  (74.2) 
  36.4   $ 

2017 
  24.8   $ 
  82.8   $ 
  5.6   $ 
  843.3   $ 
  (41.7)  $ 
  (189.1)  $ 

2016 
  178.6  
  (147.9) 
  30.7  

2016 
  67.2  
  528.6  
  28.3  
  834.1  
  (53.5) 
  (361.1) 

$ 

$ 

$ 
$ 
$ 
$ 
$ 
$ 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report82 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Petrogas Preferred Shares 

AltaGas, indirectly through its investment in AIJVLP holds a one-third equity interest in Petrogas. On June 29, 2016, AltaGas, 
directly  invested  $150.0  million  to  subscribe  for  6,000,000 cumulative  redeemable convertible preferred shares  of  Petrogas. 
These  preferred  shares  form  part  of  AltaGas’  overall  investment  in  Petrogas  and  entitle  AltaGas  to  a  fixed,  cumulative, 
preferential  cash  dividend  at  a  rate  of  8.5  percent  per  annum  payable  quarterly.  These  preferred  shares  are,  in  the  normal 

course, redeemable at any time on or after January 1, 2018 and convertible into a specified number of common shares at the 
option of either holder at any time on or after April 19, 2018. For the year ended December 31, 2017, AltaGas received dividend 
income of $12.8 million (2016 - $5.9 million) from the Petrogas preferred shares, which has been included in the Consolidated 
Statement of Income under the line item “Income from equity investments”. 

ASTC and the Sundance B PPAs 

In the first quarter of 2016, ASTC exercised its right to terminate the Sundance B Power Purchase Arrangements for Sundance 
B Unit 3 and Unit 4 (collectively, the Sundance B PPAs) effective March 8, 2016 pursuant to the change in law provisions. As a 

result,  AltaGas  recognized  a  pre-tax  provision  of  $4.0  million  in  the  Consolidated  Statement  of  Income  under  the  line  item 
“Income  from  equity  investments”  for  the  year  ended  December  31,  2016  on  its  investment  in  ASTC  to  settle  the  working 
deficiency. 

In  December  2016,  AltaGas  Pipeline  Partnership  and  TransCanada  Energy  Ltd.  dissolved  ASTC.  On  December  16,  2016, 
AltaGas  Pipeline  Partnership  and  the  Government  of  Alberta  reached  a  definitive  settlement  agreement  regarding  the 
termination of the Sundance B PPAs. Under the settlement agreement, AltaGas has agreed to contribute 391,879 self-generated 
carbon offsets and make a total of $6.0 million in cash payments payable in equal installments over three years starting in 2018. 
AltaGas Pipeline Partnership and ASTC were granted a full release from all past, present and future obligations respecting the 

Sundance B PPAs by the Government of Alberta. As a result of the settlement, AltaGas recorded an overall pre-tax termination 
expense of approximately $8.4 million for the year ended December 31, 2016, which included the $6.0 million of future cash 
payments, the costs of the self-generated carbon offsets and associated revenue (See Note 16).   

Tidewater   

AltaGas  received  43.7  million  of  common  shares  of  Tidewater  valued  at  $1.48  per  share  as  part  of  the  proceeds  from  the 
Tidewater Gas Asset Disposition on February 29, 2016 (see Note 3). AltaGas accounted for its investment in Tidewater common 
shares using the equity method up until the end of May 2017 when AltaGas concluded that it no longer exercised significant 
influence over Tidewater. Consequently, AltaGas ceased accounting for the investment under the equity method and reclassified 

the carrying value of the investment of approximately $65.4 million to “Long-term investments and other assets”. The Tidewater 
common  shares  are  now  recorded  at  fair  value  and  subsequent  changes  in  fair  value  are  recognized  in  the  Consolidated 
Statement of Income under “Other income”. 

Provisions on investments accounted for by the equity method 

No provisions were recorded for the year ended December 31, 2017. For the year ended December 31, 2016, pre-tax provision 
of $4.0 million was recorded on the investment in ASTC.  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report83  
 
 
 
 
 
 
 
13.  SHORT-TERM DEBT 

As at   
Bank indebtedness (a) 
US$150 million operating facility (b) 
$25 million operating facility (c) 

December 31, 
2017 
  6.2   $ 

$ 

December 31, 
2016 

  6.0  
  116.8  

  31.7  

  5.9  
  128.7  
(a)  Bank indebtedness bears interest at the lender's prime rate or at the interest rate applicable to bankers' acceptances. The prime lending rate at December 31, 

  8.9  
  46.8   $ 

$ 

2017 was 3.2 percent (December 31, 2016 – 2.7 percent). 

(b)  As  at  December 31,  2017,  SEMCO  held  a  US$150  million  (December 31,  2016  -  US$150.0  million)  unsecured  revolving  operating  credit  facility  with  a 

Canadian chartered bank with a maturity date of December 15, 2022. Draws on the facility can be by way of U.S. base-rate loans, letters of credit and LIBOR 

loans. Letters of credit outstanding under this facility as at December 31, 2017 were $0.6 million (December 31, 2016 - $0.7 million). 

(c)  As  at  December 31,  2017,  AltaGas  held  a  $25.0  million  (December 31,  2016  -  $25.0  million)  bank  operating  facility  which  is  available  for  working  capital 
purposes and expires on May 22, 2018. Draws on the facility are by way of prime-rate advances, bankers’ acceptances or letters of credit at the bank’s prime 
rate or for a fee. Letters of credit outstanding under this facility as at December 31, 2017 were $3.7 million (December 31, 2016 - $3.9 million). 

Other Credit Facilities 

As  at  December 31,  2017,  the  Corporation  held  a  $50.0  million  (December 31,  2016  -  $50.0  million)  unsecured  demand 

revolving operating credit facility with a Canadian chartered bank. Draws on the facility bear interest at the lender's prime rate or 
at the bankers' acceptance rate plus a stamping fee. Letters of credit outstanding under this facility as at December 31, 2017 
were $nil (December 31, 2016 - $nil). 

As  at  December 31,  2017,  AltaGas  Utility  Group  Inc.  held  a  $20.0  million  (December 31,  2016  -  $20.0  million)  unsecured, 
uncommitted demand operating credit facility with a Canadian chartered bank. Draws on the facility can be by way of prime rate 
loans, U.S. base-rate loans, letters of credit, bankers' acceptances and LIBOR loans. Letters of credit outstanding under this 
facility as at December 31, 2017 were $3.5 million (December 31, 2016 - $3.7 million). 

As at December 31, 2017, AltaGas held a $150.0 million (December 31, 2016 - $150.0 million) unsecured four-year extendible 
revolving letter of credit facility. Draws on the facility can be by way of prime loans, U.S. base-rate loans, LIBOR loans, bankers’ 
acceptances  or  letters of credit.  Letters  of credit  outstanding  under  this  facility  as  at  December 31, 2017  were  $40.8  million 
(December 31, 2016 - $49.1 million).   

As at December 31, 2017, AltaGas held a $150.0 million (December 31, 2016 - $150.0 million) unsecured bilateral letter of credit 
demand facility with a Canadian chartered bank. Borrowings on the facility incur fees and interest at rates relevant to the nature 
of the draws made. Letters of credit outstanding under this facility as at December 31, 2017 were $71.3 million (December 31, 

2016 - $104.0 million). 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report84 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
14.  LONG-TERM DEBT 

As at 
Credit facilities 

$1,400 million unsecured extendible revolving(a) 
US$300 million unsecured extendible revolving(b) 

Medium-term notes (MTNs) 

$200 million Senior unsecured - 5.49 percent 
$175 million Senior unsecured - 4.60 percent 
$200 million Senior unsecured - 4.55 percent 
$200 million Senior unsecured - 4.07 percent 
$350 million Senior unsecured - 3.72 percent 
$300 million Senior unsecured - 3.57 percent 
$200 million Senior unsecured - 4.40 percent 
$300 million Senior unsecured - 3.84 percent 
$100 million Senior unsecured - 5.16 percent 
$300 million Senior unsecured - 4.50 percent 
$350 million Senior unsecured - 4.12 percent 
$200 million Senior unsecured - 3.98 percent 
$250 million Senior unsecured - 4.99 percent 
US$125 million Senior unsecured - floating(c) 

SEMCO long-term debt 

US$300 million SEMCO Senior secured - 5.15 percent(d) 
US$82 million CINGSA Senior secured - 4.48 percent(e) 

Debenture notes 

Maturity date 

 December 31, 
2017 

 December 31, 
2016 

15-Dec-2020 

$ 

8-Dec-2019 

  219.1   $ 
  — 

27-Mar-2017 
15-Jan-2018 
17-Jan-2019 
1-Jun-2020 
28-Sep-2021 
12-Jun-2023 
15-Mar-2024 
15-Jan-2025 
13-Jan-2044 
15-Aug-2044 
7-Apr-2026 
4-Oct-2027 
4-Oct-2047 
17-Apr-2017 

21-Apr-2020 
2-Mar-2032 

15-Sep-2017 
15-Nov-2018 

  — 
  175.0  
  200.0  
  200.0  
  350.0  
  300.0  
  200.0  
  299.9  
  100.0  
  299.8  
  349.8  
  199.9  
  250.0  
  — 

  376.4  
  85.2  

  — 
  7.0  

  377.9  

  — 

  200.0  
  175.0  
  200.0  
  200.0  
  350.0  
  300.0  
  200.0  
  299.9  
  100.0  
  299.8  
  349.8  
  — 
  — 
  167.8  

  402.8  
  97.5  

  7.4  
  8.0  

PNG RoyNat Debenture(f) 
PNG 2018 Series Debenture - 8.75 percent(f) 
PNG 2025 Series Debenture - 9.30 percent(f) 
PNG 2027 Series Debenture - 6.90 percent(f) 
CINGSA capital lease - 3.50 percent 
CINGSA capital lease - 4.48 percent 

  13.5  
  14.5  
  0.6  
  0.2  
  3,764.7  
  (14.4) 
  3,750.3  
  (383.4) 
  3,366.9  
(a)  Borrowings on the facility can be by way of prime loans, U.S. base-rate loans, LIBOR loans, bankers' acceptances or letters of credit. Borrowings on the facility 

  13.0  
  14.0  
  0.5  
  0.2  
  3,639.8   $ 
  (14.4) 
  3,625.4  
  (188.9) 
  3,436.5   $ 

18-Jul-2025 
2-Dec-2027 
1-May-2040 
4-Jun-2068 

Less debt issuance costs 

Less current portion 

$ 

$ 

have fees and interest at rates relevant to the nature of the draw made.   

(b)  Borrowings on the facility can be by way of U.S. base rate loans, U.S. prime loans, LIBOR loans or letters of credit.   
(c)  The notes carried a floating rate coupon of three months LIBOR plus 0.85 percent. 
(d)  Collateral for the US$ MTNs is certain SEMCO assets. 

(e)  Collateral  for  the  CINGSA  Senior  secured  loan  is  certain  CINGSA  assets.  Alaska  Storage  Holding  Company,  LLC,  a  subsidiary  in  which  AltaGas  has  a 

controlling interest, is the non-recourse guarantor of this loan. 

(f)  Collateral for the Secured Debentures consists of a specific first mortgage on substantially all of PNG's property, plant and equipment, and gas purchase and 

gas sales contracts, and a first floating charge on other property, assets and undertakings. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report85  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
15.  ASSET RETIREMENT OBLIGATIONS 

As at 

Balance, beginning of year 
Obligations acquired 
New obligations 
Obligations settled 
Revision in estimated cash flow 
Accretion expense 
Foreign exchange translation 
Reclassified to liabilities associated with assets held for sale (note 4) 
Balance, end of year 

December 31, 
2017 

December 31, 
2016 

$ 

$ 

  81.6   $ 
  — 
  1.5  
  (4.0) 
  6.0  
  4.4  
  (0.9) 
  (0.3)  
  88.3   $ 

  67.9  
  11.3  
  0.7  
  (3.8) 
  2.1  
  4.2  
  (0.4) 
  (0.4) 
  81.6  

The majority of the asset retirement obligations are associated with gas processing facilities in the Gas segment.   

AltaGas estimates the undiscounted cash required to settle the asset retirement obligations, excluding growth for inflation,  at 
December 31, 2017 was $232.9 million (December 31, 2016 - $225.9 million).   

The asset retirement obligations have been recorded in the Consolidated Financial Statements at estimated values discounted 
at rates between 4.0 and 8.5 percent and are expected to be incurred between 2018 and 2164. No assets have been legally 
restricted for settlement of the estimated liability. 

In  May  2014,  the  National  Energy  Board  (NEB)  issued  a  decision  establishing  that,  by  January  1,  2015,  all  NEB-regulated 

companies must have a mechanism in place for the accumulation of funds to pay for future pipeline abandonment. AltaGas 
Holdings Inc., a wholly-owned subsidiary of AltaGas, opted to comply with the NEB decision with a surety bond supplied by a 
surety company regulated by the Office of the Superintendent of Financial Institutions in the amount of $30.3 million. 

16.  OTHER LONG-TERM LIABILITIES 

As at   
Deferred lease payable 
Deferred revenue 
Customer advances for construction 
NTL liability   
Sundance B PPA termination expense (a) 
Lease Inducement 
Other long-term liabilities 

December 31, 
2016 
  0.7  
  4.0  
  43.9  
  146.8  
  6.0  
  3.1  
  1.8  
  206.3  
(a)  On December 16, 2016, AltaGas Pipeline Partnership and the Government of Alberta reached a definitive settlement agreement regarding the termination of 
the Sundance B PPAs. Under the settlement agreement, AltaGas has agreed to make a total of $6.0 million in cash payments in equal annual installments over 
three years starting in 2018, $2.0 million of which have been recorded under “Accounts payable and accrued liabilities”.   

December 31, 
2017 
  2.4   $ 
  3.8  
  40.9  
  142.0  
  4.0  
  3.1  
  5.7  
  201.9   $ 

$ 

$ 

NTL Liability 

In 2010, AltaGas entered into a 60-year CPI-indexed Electricity Purchase Agreement (EPA) and other related agreements with 
BC Hydro for the 195-MW Forrest Kerr run-of-river hydroelectric facility. As part of the related agreements, AltaGas agreed to 

pay BC Hydro annual payments of approximately $11.0 million per year, adjusted for inflation, in support of the construction and 
operation of the Northwest Transmission Line (NTL) until 2034.   

The fair value of the firm commitment on initial recognition was measured using an estimated 2 percent inflation rate and 4.27 
percent discount rate.  As at December 31, 2017, the NTL liability has been recorded within other current liabilities for $11.5 
million  (December 31,  2016  -  $11.3  million)  and  other  long-term  liabilities  for  $142.0  million  (December 31,  2016  -  $146.8 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report86 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
million). Accretion expense for the year ended December 31, 2017 was $6.5 million (2016 - $6.8 million). The initial consideration 
and  the  fair  value  of  the  future  consideration  of  $258.5  million  has  been  recognized  within  intangible  assets  and  is  being 
depreciated over 60 years, the term of the EPA with BC Hydro. 

17.  INCOME TAXES   

Year ended December 31 
Income before income taxes - consolidated 
Statutory income tax rate (%) 
Expected taxes at statutory rates 
Add (deduct) the tax effect of: 

Permanent differences 
Statutory and other rate differences 
Rate adjustment for change in tax rates 
Deferred income tax recovery on regulated assets 
Other 

Income tax provision 

Current 

Canada 
United States 

Deferred 
Canada 
United States 

Effective income tax rate (%) 

Net deferred income tax liabilities were composed of the following: 

As at   
PP&E and intangible assets 
Regulatory assets 
Tax pools, deferred financing and compensation 
Other 
Valuation allowance 

$ 

$ 

$ 

$ 

$ 

2017  
  66.4   $ 
  27.0  
  17.9   $ 

  9.5  
  (25.5) 
  (34.1) 
  (7.4) 
  6.1  
  (33.5)  $ 

  18.0  
  12.5  
  30.5   $ 

  (7.4) 
  (56.6) 
  (64.0)  $ 
  (50.5)  

2016 
  246.2  
  27.0  
  66.5  
  — 
  (1.9) 
  (0.3) 
  — 
  (5.7) 
  (25.8) 
  32.8  

  10.0  
  14.4  
  24.4  

  (28.7) 
  37.1  
  8.4  
  13.3  

$ 

December 31, 
2017 
  726.5   $ 
  22.8  
  (302.3) 
  (59.3) 
  53.7  
  441.4   $ 

December 31, 
2016 
  737.0  
  37.3  
  (208.2) 
  8.9  
  43.9  
  618.9  

$ 

The  amount  shown  on  the  Consolidated  Balance  Sheets  as  deferred  income  tax  liabilities  represents  the  net  differences 
between the tax basis and book carrying values on the Corporation's balance sheets at enacted tax rates. 

The Tax Cuts and Jobs Act (the U.S. tax reform) in the U.S. became law on December 22, 2017. The law includes significant 
changes to the U.S. corporate income tax system, including a federal corporate rate reduction from 35 percent to 21 percent 
beginning  in  2018,  changes  to  capital  depreciation,  limitations  on  the  deductibility  of  interest  expense  and  executive 
compensation, and the transition of U.S. international taxation from a worldwide tax system to a territorial tax system. 

At December 31, 2017, as a result of the U.S. tax reform, the Corporation remeasured its U.S. deferred tax liability based upon 
the new statutory federal rate of 21 percent. This remeasurement resulted in a net reduction to the deferred tax liability in the 
amount of $135.9 million. As the Corporation’s U.S.  utilities are subject to rate regulation, $101.8 million of the deferred tax 

remeasurement  was  recorded  as  a  deferred  regulatory  liability  on  the  Corporation’s  Consolidated  Balance  Sheet.  For  the 
Corporation’s  non-regulated  U.S.  businesses,  the  remeasurement  was  recorded  as  a  $34.1  million  reduction  to  income  tax 
expense.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report87  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In addition to the U.S. federal rate change, the government of British Columbia increased the corporate tax rate to 12 percent 
from 11 percent beginning in 2018. 

As at December 31, 2017, the Corporation had tax-effected non-capital losses of approximately $233.8 million for tax purposes, 
which will be available to offset future taxable income. If not used, these losses will expire between 2023 and 2037. 

Uncertain Tax Positions 

On an annual basis the Corporation and its subsidiaries file tax returns in Canada and various foreign jurisdictions. In Canada 
AltaGas' federal and provincial tax returns for the years 2009 to 2016 remain subject to examination by taxation authorities. In the 
United States both the federal and state tax returns filed for the years 2011 to 2016 remain subject to examination by the taxation 
authorities.   

Management determined that the following provision was required for uncertainty on income taxes during the year: 

Year ended December 31 
Balance, beginning of year 
Net changes during the year 
Balance, end of year 

18.  REGULATORY ASSETS AND LIABILITIES 

$ 

$ 

2017  
  2.2   $ 
  3.7  
  5.9   $ 

2016 
  3.7  
  (1.5) 
  2.2  

AltaGas accounts for certain transactions in accordance with ASC 980, Regulated Operations. AltaGas refers to this accounting 
guidance for regulated entities as “regulatory accounting”. Under regulatory accounting, utilities are permitted to defer expenses 
and income as regulatory assets and liabilities, respectively, in the Consolidated Balance Sheet when it is probable that those 
expenses and income will be allowed in the rate-setting process in a period different from the period in which they would have 

been reflected in the Consolidated Statement of Income by a non-rate-regulated entity. These deferred regulatory assets and 
liabilities are included in the Consolidated Statement of Income in future periods when the amounts are reflected in customer 
rates.  Management’s  assessment  of  the  probability  of  recovery  or  pass-through  of  regulatory  assets  and  liabilities  requires 
judgment and interpretation of laws and regulatory agency orders, rules, and rate-making conventions. The relevant regulatory 
bodies are the AUC, BCUC, and NSUARB in Canada, and the MPSC and RCA in the United States. 

If,  for  any  reason,  the  Corporation  ceases  to  meet  the  criteria  for  application  of  regulatory  accounting  for  all  or  part  of  its 
operations, the regulatory assets and liabilities related to those portions ceasing to meet such criteria would be de-recognized 

from  the  Consolidated  Balance  Sheet  and  included  in  the  Consolidated  Statement  of  Income  for  the  period  in  which  the 
discontinuance of regulatory accounting occurs. Criteria that give rise to the discontinuance of regulatory accounting include: (i) 
increasing competition that restricts the ability of the Corporation to charge prices sufficient to recover specific costs, and (ii) a 
significant change in the manner in which rates are set by regulatory agencies from cost-based regulation to another form of 
regulation. The Corporation’s review of these criteria currently supports the continued application of regulatory accounting for all 
its utilities.     

The following table summarizes the regulatory assets and liabilities recorded in the Consolidated Balance Sheets, as well as the 
remaining period,  as  of  December 31,  2017 and  2016,  over  which the  Corporation expects  to  realize or settle  the  assets  or 

liabilities: 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report88 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
As at 
Regulatory assets - current 

Deferred cost of gas 
Deferred property taxes 
Energy optimization costs 

Regulatory assets - non-current 

Deferred regulatory costs and rate stabilization adjustment mechanism  $ 
Pipeline rehabilitation costs 
Future recovery of pension and other retirement benefits (a) 
Deferred environmental costs 
Deferred loss on reacquired debt 
Deferred depreciation and amortization (b) 
Deferred future income taxes (c)   
Deferred customer retention program amortization (d) 
Revenue deficiency account (e) 
Other 

Regulatory liabilities - current 

Deferred cost of gas 
Energy optimization costs 
Interruptible storage service revenue 
Refundable tax credit (f) 

Regulatory liabilities - non-current 

Option fees deferral (g) 
Refundable tax credit (f) 
Future removal and site restoration costs (h) 
Federal income tax rate change (i) 
Insurance recovery of environmental costs 
Other 

$ 

$ 

$ 

$ 

$ 

December 31, 
2017 

December 31, 
2016 

Recovery 
Period 

$ 

$ 

  0.5   $ 
  0.3  
  0.3  
  1.1   $ 

  20.5   $ 
  0.3  
  113.9  
  13.9  
  2.5  
  23.3  
  104.7  
  16.5  
  31.0  
  2.0  
  328.6   $ 

  9.0   $ 
  — 
  — 
  1.9  
  10.9   $ 

  4.3   $ 
  7.5  
  153.3  
  101.8  
  0.3  
  1.4  
  268.6   $ 

  0.8   Less than one year 
  0.1   Less than one year 
  —  Less than one year 

  0.9     

  18.0  
  6.7  
  114.7  
  18.0  
  3.4  
  24.0  
  104.7  

  6.4    

  29.2  
  4.0  
  329.1     

1 - 28 years 
1-3 years 
Various 
1-10 years 
2-14 years 
Various 
Various 
Various 
Various 
Various 

  13.7   Less than one year 
  0.6   Less than one year 
  0.3   Less than one year 
  2.0   Less than one year 

  16.6     

  4.1  
  10.1  
  154.9  
  — 
  0.5  
  0.9  
  170.5     

Various 
4 years 
Various 
Various 
1 year 
Various 

(a)  Certain utilities have recovered pension costs related to regulated operations in rates, and as such the Corporation has recorded a regulatory asset for the 

unamortized costs associated with the defined benefit and post-retirement benefit plans. Depending on the method utilized by the utility the recovery period can 

be either the expected service life of the employees or the benefit period for employees or a specific recovery period as approved by the respective regulator. 

(b)  Pursuant to the NSUARB decisions in 2009 and 2011, Heritage Gas was ordered to suspend amortization of property, plant and equipment and intangible 

assets for regulatory purposes for the fiscal periods from 2009 to 2013. The NSUARB, in its decision dated November 24, 2011, directed amortization to be 

phased in over a four year period at the following rates: 2014 at 25 percent of the authorized rates; 2015 at 50 percent of the authorized rates; 2016 at 75 

percent of the authorized rates; and 2017 at 100 percent of the authorized rates. As a result of this order, the Heritage Gas recognizes a regulatory asset equal 

to the amortization that would have otherwise been included in rates.   

(c)  This regulatory asset reflects the amount of deferred income taxes expected to be refunded, or recovered from, customers in future rates.   
(d) 

In September 2016, the NSUARB approved Heritage Gas’ Customer Retention Program application to decrease distribution rates for certain commercial and 

residential customers, suspend depreciation and to increase the capitalization rate for operating, maintenance and administrative expenses effective March 22, 
2016. 

(e)  Heritage Gas has an approval from the NSUARB to use a revenue deficiency account (RDA) until it is fully recovered, subject to a cap of $50 million, imposed 
in 2010, which may be increased subject to approval by the NSUARB. The RDA is the cumulative difference between the revenue requirements and the actual 

amounts billed to customers. 

(f)  On September 18, 2013, CINGSA received a US$15.0 million gas storage facility tax credit from the State of Alaska for the benefit of its firm storage service 
customers.  CINGSA  will  derive  no  direct  or  indirect  benefit  from  the  tax  credit.  Following  receipt  of  the  tax  credit,  CINGSA  deposited  it  in  a  separate 
interest-bearing account. CINGSA will act as a custodian of the tax credit and any interest earned for the benefit of CINGSA's customers. On an annual basis, 
covering the years 2012 through 2021, CINGSA will disburse to the customers 1/10th of the amount of the tax credit not subject to refund to the State and 
interest earned. The RCA has approved the disbursement methodology. 

(g)  Pursuant to BCUC approved negotiated settlement agreement. 

(h)  This amount and timing of draw down is dependent upon the cost of removal of underlying utility property, plant and equipment and the life of property, plant and 

equipment. 
The Tax Cuts and Jobs Act (the U.S. tax reform) was enacted on December 22, 2017, and required the Corporation to revalue its U.S. deferred tax assets and 

(i) 

liabilities to the lower federal corporate tax rate of 21 percent resulting in excess accumulated deferred income taxes. The tax rate reduction created a reduction 

in deferred tax liability, which SEMCO Gas is required to refund to its ratepayers. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report89  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
19.  ACCUMULATED OTHER COMPREHENSIVE INCOME 

($ millions) 

Defined 
benefit 
pension 
and PRB 
plans 

Available- 
for-sale 

Hedge net 
investments 

Translation 
foreign 
operations 

Equity 
investee 

Total 

Opening balance, January 1, 2017 

$ 

  19.8   $ 

  (11.3) 

$ 

  (135.6)  $ 

  526.3   $ 

  5.9   $ 

  405.1  

OCI before reclassification 

Amounts reclassified from OCI   

Current period OCI (pre-tax) 

Income tax on amounts retained in 
   AOCI 

Income tax on amounts reclassified 
   to earnings 

Net current period OCI 

Ending balance, December 31, 2017 

Opening balance, January 1, 2016 

OCI before reclassification 
Amounts reclassified from OCI   

Current period OCI (pre-tax) 

Income tax on amounts retained in 
   AOCI 

Income tax on amounts reclassified 
   to earnings 

Net current period OCI 
Ending balance, December 31, 2016 

$ 

$ 

$ 

  (30.3) 

  — 

  (30.3) 

  (1.3) 

  1.3  

  — 

  3.4  

  0.3  

  — 

  (26.9) 

  (0.4) 

  (0.1) 

  6.6  

  — 

  6.6  

  — 

  — 

  6.6  

  (183.4) 

  (2.2) 

    (210.6) 

  — 

  — 

  1.3  

  (183.4) 

  (2.2) 

    (209.3) 

  — 

  — 

  — 

  3.7  

  — 

  (0.4) 

  (183.4) 

  (2.2) 

    (206.0) 

  (7.1)  $ 

  (11.4) 

$ 

  (129.0)  $ 

  342.9   $ 

  3.7   $ 

  199.1  

  (2.4)  $ 

  (9.6) 

$ 

  (169.6)  $ 

  610.5   $ 

  4.6   $ 

  433.5  

  25.6  
  — 
  25.6  

  (3.4) 
  1.0  
  (2.4) 

  44.6  
  — 
  44.6  

  (84.2) 
  — 
  (84.2) 

  1.3  
  — 
  1.3  

  (16.1) 
  1.0  
  (15.1) 

  (3.4) 

  1.0  

  (10.6) 

  — 

  — 

  (13.0) 

  — 
  22.2  
  19.8   $ 

  (0.3) 
  (1.7) 
  (11.3) 

  — 
  34.0  
  (135.6)  $ 

$ 

  — 
  (84.2) 
  526.3   $ 

  — 
  1.3  
  5.9   $ 

  (0.3) 
  (28.4) 
  405.1  

Reclassification From Accumulated Other Comprehensive Income     

AOCI components reclassified 

Income statement line item 

Defined benefit pension and PRB 

plans 

Deferred income taxes 

Operating and administrative expense 
Income tax expenses – deferred 

20.  FINANCIAL INSTRUMENTS AND FINANCIAL RISK MANAGEMENT 

For the year ended 
December 31 

2017 

  1.3   $ 
  (0.4) 
  0.9   $ 

2016 

  1.0  
  (0.3) 
  0.7  

$ 

$ 

The Corporation’s financial instruments consist of cash and cash equivalents, accounts receivable, risk management contracts, 

certain long-term investments  and  other  assets,  accounts  payable  and  accrued  liabilities,  dividends payable, short-term  and 
long-term debt and certain other current and long-term liabilities.     

Fair Value Hierarchy   

AltaGas categorizes its financial assets and financial liabilities into one of three levels based on fair value measurements  and 
inputs used to determine the fair value.   

Level 1 - fair values are based on unadjusted quoted prices in active markets for identical assets or liabilities. Fair values are 

based on direct observations of transactions involving the same assets or liabilities and no assumptions are used. Included in 

this category are publicly traded shares valued at the closing price as at the balance sheet date. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report90 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
Level 2 - fair values are determined based on valuation models and techniques where inputs other than quoted prices included 

within  level  1  are  observable  for  the  asset  or  liability  either  directly  or  indirectly.  AltaGas  uses  over-the-counter  derivative 
instruments to manage fluctuations in commodity prices and foreign exchange rates. AltaGas estimates forward prices based on 
published sources adjusted for factors specific to the asset or liability, including basis and location differentials, discount rates, 

and  currency  exchange.  The  forward  curves  used  to  mark-to-market  these  derivative  instruments  are  vetted  against  public 
sources. 

Level 3 - fair values are based on inputs for the asset or liability that are not based on observable market data. AltaGas uses 

valuation techniques when observable market data is not available.   

The following methods and assumptions were used to estimate the fair value of each significant class of financial instruments: 

Cash and  cash  equivalents,  Accounts  receivable,  Accounts payable,  Other  current  liabilities,  Short-term  debt and  Dividends 
payable - the carrying amounts approximate fair value because of the short maturity of these instruments. 

Current portion of  long-term  debt, Long-term  debt  and  Other  long-term  liabilities  -  the fair  value of  these  liabilities  has been 

estimated based on discounted future interest and principal payments using the current market interest rates of instruments with 
similar terms. 

Risk management assets and liabilities - the fair values of power, natural gas and NGL derivative contracts were calculated using 

forward  prices  from  published  sources  for  the  relevant  period.  The  fair  value  of  foreign  exchange  derivative  contracts  was 

calculated using quoted market rates. The fair value of foreign exchange option contracts was calculated using a variation of the 
Black-Scholes pricing model 

Financial assets 

Cash and cash equivalents 
Risk management assets - current 
Risk management assets - non-current 
Long-term investments and other assets (a)  

Financial liabilities 

Risk management liabilities - current 
Risk management liabilities - non-current 
Current portion of long-term debt 
Long-term debt 
Other current liabilities (b) 
Other long-term liabilities (b)   

(a)  Excludes non-financial assets.   

(b)  Excludes non-financial liabilities. 

December 31, 2017 

Carrying   
Amount 

Level 1 

Level 2 

Level 3 

Total 
Fair Value 

$ 

$ 

  27.3   $ 
  38.6   
  15.9  
  170.0  
  251.8   $ 

  27.3   $ 
  —  
  — 
  95.0  
  122.3   $ 

  —  $ 

  38.6   
  15.9  
  85.6  
  140.1   $ 

$ 

  57.6   $ 
  13.8  
  188.9  
   3,436.5  
  22.4  

  146.0  
$   3,865.2   $ 

  —  $ 
  — 
  — 
  — 
  — 

  57.6   $ 
  13.8  
  189.6  
    3,568.3  
  22.4  

  — 
  —  $    3,999.4   $ 

  147.7  

  —  $ 
  — 
  — 
  — 
  —  $ 

  27.3  
  38.6  
  15.9  
  180.6  
  262.4  

  —  $ 
  — 
  — 
  — 
  — 

  57.6  
  13.8  
  189.6  
   3,568.3  
  22.4  

  147.7  
  — 
  —  $   3,999.4  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report91  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Financial assets 

Cash and cash equivalents 
Risk management assets - current 
Risk management assets - non-current 
Long-term investments and other assets (a)   

Financial liabilities 

Risk management liabilities - current 
Risk management liabilities - non-current 
Current portion of long-term debt 
Long-term debt 
Other current liabilities (b)   
Other long-term liabilities (b)   

(a)  Excludes non-financial assets.   

(b)  Excludes non-financial liabilities. 

December 31, 2016 

Carrying   
Amount 

Level 1 

Level 2 

Level 3 

Total 
Fair Value 

$ 

$ 

  19.0   $ 
  40.4  
  24.1  
  113.0   
  196.5   $ 

  19.0   $ 
  — 
  — 
  49.4  
  68.4   $ 

  —  $ 

  40.4  
  24.1  
  63.6  
  128.1   $ 

$ 

  32.9   $ 
  12.6  
  383.4  
    3,366.9  
  22.3  

  152.8  
$    3,970.9   $ 

  —  $ 
  — 
  — 
  — 
  — 

  32.9  
  12.6  
  385.3  
    3,500.9  
  22.0  

  — 
  —  $    4,106.1   $ 

  152.4  

  —  $ 
  — 
  — 
  — 
  —  $ 

  19.0  
  40.4  
  24.1  
  113.0  
  196.5  

  —  $ 
  — 
  — 
  — 
  — 

  32.9  
  12.6  
  385.3  
    3,500.9  
  22.0  

  — 
  152.4  
  —  $    4,106.1  

Summary of Unrealized Gains (Losses) on Risk Management Contracts Recognized in Net Income 

For the year ended December 31 
Natural gas 
Storage optimization 
NGL frac spread 
Power 
Heat rate 
Foreign exchange 
Embedded derivative 

2017 
  2.2   $ 
  2.7  
  (11.7) 
  (20.8) 
  — 
  (34.9) 
  — 
  (62.5)  $ 

2016 
  0.2  
  (5.3) 
  (12.2) 
  4.7  
  (0.1) 
  1.0  
  0.3  
  (11.4) 

$ 

$ 

Offsetting of Derivative Assets and Derivative Liabilities 

Certain AltaGas risk management contracts are subject to master netting arrangements that create a legally enforceable right to 

offset by counterparty the related financial assets and financial liabilities. 

Risk management assets (a)   
Natural gas 
NGL frac spread 
Power 
Foreign exchange 

December 31, 2017 

Gross amounts of 
recognized 
assets/liabilities 

Gross amounts 
  offset in   
balance sheet 

$ 

$ 

  41.0   $ 

  1.3  
  17.7  
  1.7  

  61.7   $ 

  (6.2)  $ 
  (0.3) 
  (0.7) 
  — 
  (7.2)  $ 

Net amounts 
presented in 
balance sheet 
  34.8  
  1.0  
  17.0  
  1.7  
  54.5  

Risk management liabilities (b) 
Natural gas 
NGL frac spread 
Power 

  28.9  
  25.0  
  17.5  
  71.4  
(a)  Net amount of risk management assets on the Balance Sheet is comprised of risk management assets (current) balance of $38.6 million and risk management 

  35.1   $ 
  25.3  
  18.2  
  78.6   $ 

  (6.2)  $ 
  (0.3) 
  (0.7) 
  (7.2)  $ 

$ 

$ 

assets (non-current) balance of $15.9 million.   

(b)  Net  amount  of  risk  management  liabilities  on  the  Balance  Sheet  is  comprised  of  risk  management  liabilities  (current)  balance  of  $57.6  million  and  risk 

management liabilities (non-current) balance of $13.8 million.   

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Risk management assets (a) 
Natural gas 
Storage optimization 
NGL frac spread 
Power 
Foreign exchange 

December 31, 2016 

Gross amounts of 
recognized 
assets/liabilities 

Gross amounts 
  offset in   
balance sheet 

$ 

$ 

  20.1   $ 

  0.7  
  3.4  
  43.5  
  1.8  

  69.5   $ 

  (2.9)  $ 
  (0.7) 
  — 
  — 
  (1.4) 
  (5.0)  $ 

Net amounts 
presented in 
balance sheet 
  17.2  
  — 
  3.4  
  43.5  
  0.4  
  64.5  

Risk management liabilities (b) 
Natural gas 
Storage optimization 
NGL frac spread 
Power 
Foreign exchange 

  13.6  
  2.8  
  15.7  
  13.4  
  — 
  45.5  
(a)  Net amount of risk management assets on the Balance Sheet is comprised of risk management assets (current) balance of $40.4 million and risk management 

  (2.9)  $ 
  (0.7) 
  — 
  — 
  (1.4) 
  (5.0)  $ 

  3.5  
  15.7  
  13.4  
  1.4  

  50.5   $ 

  16.5   $ 

$ 

$ 

assets (non-current) balance of $24.1 million.   

(b)  Net  amount  of  risk  management  liabilities  on  the  Balance  Sheet  is  comprised  of  risk  management  liabilities  (current)  balance  of  $32.9  million  and  risk 

management liabilities (non-current) balance of $12.6 million.   

Risks associated with financial instruments 

AltaGas is exposed to various financial risks in the normal course of operations such as market risks resulting from fluctuations in 
commodity prices, currency exchange rates and interest rates as well as credit risk and liquidity risk.   

Commodity Price Risk   

AltaGas enters into financial derivative contracts to manage exposure to fluctuations in commodity prices. The use of derivative 
instruments  is  governed  under  formal  risk  management  policies  and  is  subject  to  parameters  set  out  by  AltaGas’  Risk 
Management Committee and Board of Directors. AltaGas does not make use of derivative instruments for speculative purposes.   

Natural Gas 

In the normal course of business, AltaGas purchases and sells natural gas to support its infrastructure business. The fixed price 
and market price contracts for both the purchase and sale of natural gas extend to  2022. AltaGas had the following  forward 
contracts and commodity swaps outstanding related to the activities in the energy services business as at December 31, 2017 
and 2016: 

December 31, 2017 

Sales 
Purchases 
Swaps 

December 31, 2016 

Sales 
Purchases 
Swaps 

Fixed price 
(per GJ) 
0.42 to 6.89 
0.52 to 6.40 
2.86 to 9.38 

Fixed price 
(per GJ) 
1.96 to 8.46 
1.94 to 6.50 
8.78 to 9.91 

Period 
(months) 
1-60 
1-48 
1-10 

Period 
(months) 
1-60 
1-60 
1-3 

Notional volume 
(GJ) 
  94,804,039  
  61,980,315  
  6,039,642  

Notional volume 
(GJ) 
  63,209,420  
  58,913,082  
  474,037  

Fair Value   
($ millions) 
  14.8  
  (16.8) 
  7.9  

Fair Value 
($ millions) 
  6.6  
  (4.4) 
  1.4  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report93  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NGL Frac Spread 
AltaGas entered into a series of swaps to lock in a portion of the volumes exposed to NGL frac spread. AltaGas had the 
following contracts outstanding as at December 31, 2017 and 2016: 

December 31, 2017 

Propane swaps 
Butane swaps 
Crude oil swaps 
Natural gas swaps 

Fixed price   
$28.77 to $49.21 /Bbl 
$47.83 to $54.67 /Bbl 
$61.05 to $75.64 /Bbl 
$0.42 to $2.27 /GJ 

December 31, 2016 

Propane swaps 
Butane swaps 
Crude oil swaps 
Natural gas swaps 

Power   

Fixed price   
$25.51 to $29.92 /Bbl 
$29.88 /Bbl 
$56.40 to $70.75 /Bbl 
$2.23 to $2.88 /GJ 

Period 
(months) 
1-12 
1-12 
1-12 
1-12 

Period 
(months) 
1-12 
1-3 
1-12 
1-12 

Notional volume 
1,992,927 Bbl 
130,088 Bbl 
518,665 Bbl 
11,428,515 GJ 

Notional volume 
1,330,063 Bbl 
49,500 Bbl 
302,710 Bbl 
7,639,175 GJ 

Fair Value   
($ millions) 
  (10.9) 
  (0.3) 
  (4.4) 
  (8.4) 

Fair Value 
($ millions) 
  (12.5) 
  (1.0) 
  (2.2) 
  3.4  

AltaGas sells power to the Alberta Electric System Operator at market prices as well as to commercial and industrial users in 
Alberta at fixed prices. AltaGas' strategy is to mitigate the cash flow risk to Alberta power prices to provide predictable earnings. 
Therefore, AltaGas uses third party swaps and purchase contracts to fix the prices over time on a portion of the volumes to 

mitigate financial exposure associated with the sale contracts. These power purchase and sale contracts extend to 2022. As at 
December  31,  2017,  AltaGas had no  intention  to  terminate any  contracts  prior  to  maturity.  AltaGas  had  the  following  power 
commodity forward contracts and commodity swaps outstanding as at December 31, 2017 and 2016: 

December 31, 2017 

Power sales 
Power purchases 
Swap purchases 

December 31, 2016 

Power sales 
Power purchases 
Swap purchases 

Fixed price 
(per MWh) 
38.20 to 95.03 
58.50 
37.50 to 63.50 

Fixed price 
(per MWh) 
34.00 to 99.25 
52.68 to 69.72 
30.00 to 58.50 

Period 
(months) 
1-60 
1-12 
1-48 

Period 
(months) 
1-60 
1-24 
1-60 

Notional volume 
(MWh) 
  2,169,321  
  17,520  
  1,563,160  

Notional volume 
(MWh) 
  2,671,748  
  217,520  
  1,472,040  

Fair Value   
($ millions) 
  (2.5) 
  (4.5) 
  6.5  

Fair Value   
($ millions) 
  36.2  
  0.5  
  (6.6) 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report94 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The table below provides the potential impact on pre-tax income due to changes in the fair value of risk management contracts in 
place as at December 31, 2017:     

Factor   
Alberta power price 
AECO natural gas price 
NGL frac spread: 
          Propane 
          Butane 
          Western Texas Intermediate (WTI) crude oil 
          Natural gas 

Foreign Exchange Risk   

Increase or   
  decrease to   
forward prices 
$1/MWh 
$0.50/GJ 

$1/Bbl 
$1/Bbl 
$1/Bbl 
$0.50/GJ 

Increase or decrease to   
  income before tax   
($ millions) 
  0.6  
  2.2  

  2.0  
  0.1  
  0.8  
  5.8  

AltaGas is exposed to foreign exchange risk as changes in foreign exchange rates may affect the fair value or future cash flows 

of the Corporation’s financial instruments. AltaGas has foreign operations whereby the functional currency is the U.S. dollar. As 
a result, the Corporation’s earnings, cash flows, and OCI are exposed to fluctuations resulting from changes in foreign exchange 
rates.  This  risk  is  partially  mitigated  to  the  extent  that  AltaGas  has  U.S.  dollar-denominated  debt  and/or  preferred  shares 
outstanding. AltaGas may also enter into foreign exchange forward derivatives to manage the risk of fluctuating cash flows due 
to  variations  in  foreign  exchange  rates.  As  at  December 31,  2017,  AltaGas  did  not  have  any  outstanding  foreign  exchange 
forward contracts. As at December 31, 2016, AltaGas had outstanding foreign exchange forward contracts for US$5.1 million at 
an average rate of $1.26 Canadian per U.S. dollar which settled in 2017. 

AltaGas  may  also  designate  its  U.S.  dollar-denominated  debt  as  a  net  investment  hedge  of  its  U.S.  subsidiaries.  As  at 
December 31, 2017, AltaGas designated $nil of outstanding debt as a net investment hedge (December 31, 2016 - US$301.0 
million). For the year ended December 31, 2017, AltaGas incurred an after-tax unrealized gain of $6.6 million arising from the 
translation of debt in OCI (2016 - after-tax unrealized gain of $34.0 million).   

To  mitigate  the  foreign  exchange  risks  associated  with  the  cash  purchase  price  of  WGL,  AltaGas  has  entered  into  foreign 
currency  option  contracts  with  an  aggregate  notional  value  of  approximately  US$1.2  billion.  These  foreign  currency  option 
contracts do not qualify for hedge accounting. Therefore, all changes in fair value are recognized in net income. For the  year 
ended December 31, 2017, an unrealized loss of $34.3 million was recognized under the line item “unrealized losses from risk 

management contracts” in the consolidated statement of income in relation to these contracts (2016 - $nil).   

Interest Rate Risk 

AltaGas is exposed to interest rate risk as changes in interest rates may impact future cash flows and the fair value of its financial 
instruments. The Corporation manages its interest rate risk by holding a mix of both fixed and floating interest rate debt. As at 
December 31, 2017, approximately 93 percent of AltaGas’ total outstanding short-term and long-term debt was at fixed rates. In 
addition,  from  time  to  time,  AltaGas  may  enter  into interest  rate  swap  agreements  to  fix  the  interest  rate  on  a  portion  of  its 
banker’s acceptances issued under its credit facilities. There were no outstanding interest rate swaps as at December 31, 2017. 

Credit Risk   

Credit risk results from the possibility that a counterparty to a financial instrument fails to fulfill its obligations in accordance with 
the terms of the contract.   

AltaGas' credit policy details the parameters used to grant, measure, monitor and report on credit provided to counterparties. 
AltaGas minimizes counterparty risk by conducting credit reviews on counterparties in order to establish specific credit limits, 
both prior to providing products or services and on a recurring basis. In addition, most contracts include credit mitigation clauses 

that  allow  AltaGas  to  obtain  financial  or  performance  assurances  from  counterparties  under  certain  circumstances.  AltaGas 
maintains an allowance for doubtful accounts in the normal course of its business.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report95  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AltaGas' maximum credit exposure consists primarily of the carrying value of the non-derivative financial assets and the fair 
value  of  derivative  financial  assets.  As  at  December 31,  2017,  AltaGas  had  no  concentration  of  credit  risk  with  a  single 
counterparty. 

Accounts Receivable Past Due or Impaired 

AltaGas had the following past due or impaired accounts receivable (AR): 

As at December 31, 2017 
Trade receivable 
Other 
Allowance for credit losses 

As at December 31, 2016 
Trade receivable 
Other 
Allowance for credit losses 

Total 
  383.0   $ 
  2.3  
  (2.4) 
  382.9   $ 

Total 
  339.1   $ 
  2.2  
  (2.5) 
  338.8   $ 

$ 

$ 

$ 

$ 

AR 
accruals 

Receivables 
impaired 

Less than 
30 days 
  187.0   $ 
  2.3  
  — 
  189.3   $ 

  2.4   $ 
  — 
  (2.4) 

  —  $ 

  184.6   $ 
  — 
  — 
  184.6   $ 

AR 
accruals 
  160.4   $ 
  — 
  — 
  160.4   $ 

Receivables 
impaired 

Less than 
30 days 
  166.1   $ 
  2.2  
  — 
  168.3   $ 

  2.5   $ 
  — 
  (2.5) 

  —  $ 

31 to 
60 days 

61 to   
90 days 

  7.9   $ 
  — 
  — 
  7.9   $ 

  1.4   $ 
  — 
  — 
  1.4   $ 

Over 
90 days 
  (0.3) 
  — 
  — 
  (0.3) 

31 to 
60 days 

61 to   
90 days 

  6.4   $ 
  — 
  — 
  6.4   $ 

  2.4   $ 
  — 
  — 
  2.4   $ 

Over 
90 days 
  1.3  
  — 
  — 
  1.3  

Allowance for credit losses 
Balance, beginning of year 
Foreign exchange translation 
New allowance 
Allowance applied to uncollectible customer accounts 
Balance, end of year 

Liquidity Risk   

$ 

December 31, 
2017 
  2.5  
  (0.1) 
  0.4  
  (0.4) 
  2.4  

$ 

$ 

December 31, 
2016 
  2.7  
  — 
  0.4  
  (0.6) 
  2.5  

$ 

Liquidity risk is the risk that AltaGas will not be able to meet its financial obligations as they come due. AltaGas manages this risk 
through its extensive budgeting and monitoring process to ensure it has sufficient cash and credit facilities to meet its obligations. 
AltaGas' objective is to maintain its investment-grade ratings to ensure it has access to debt and equity funding as required. 

AltaGas had the following contractual maturities with respect to financial liabilities: 

Payments due by period 

As at December 31, 2017 
Accounts payable and accrued liabilities 
Dividends payable 
Short-term debt 
Other current liabilities (a) 
Other long-term liabilities (a) 
Risk management contract liabilities 
Current portion of long-term debt (b) 
Long-term debt (b) 

(a)  Excludes non-financial liabilities 
(b)  Excludes deferred financing costs and discounts 

$ 

Total 
  415.3   $ 
  32.0  
  46.8  
  22.4  
  146.0  
  71.4  
  188.9  
    3,450.9  
$    4,373.7   $ 

Less than 
1 year 
  415.3   $ 
  32.0  
  46.8  
  22.4  
  — 
  57.6  
  188.9  
  — 

1-3 years 

  —  $ 
  — 
  — 
  — 
  25.7  
  11.1  
  — 
    1,009.1  

  763.0   $    1,045.9   $ 

4-5 years 

After 
5 years 
  — 
  —  $ 
  — 
  — 
  — 
  — 
  — 
  — 
  99.5  
  20.8  
  — 
  2.7  
  — 
  — 
  363.8  
    2,078.0  
  387.3   $    2,177.5  

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Payments due by period 

Total 
  345.8   $ 
  29.2  
  128.7  
  22.3  
  152.8  
  45.5  
  383.5  
  3,381.2  
  4,489.0   $ 

$ 

$ 

Less than 
1 year 
  345.8   $ 
  29.2  
  128.7  
  22.3  
  — 
  32.9  
  383.5  
  — 
  942.4   $ 

1-3 years 

4-5 years 

  —  $ 
  — 
  — 
  — 
  25.2  
  9.1  
  — 
  396.6  
  430.9   $ 

  —  $ 
  — 
  — 
  — 
  22.4  
  3.5  
  — 
  1,345.2  
  1,371.1   $ 

After 
5 years 
  — 
  — 
  — 
  — 
  105.2  
  — 
  — 
  1,639.4  
  1,744.6  

As at December 31, 2016 
Accounts payable and accrued liabilities 
Dividends payable 
Short-term debt 
Other current liabilities (a) 
Other long-term liabilities (a) 
Risk management contract liabilities 
Current portion of long-term debt (b) 
Long-term debt (b) 

(a)  Excludes non-financial liabilities 

(b)  Excludes deferred financing costs and discounts 

21.  SHAREHOLDERS’ EQUITY 

Authorization 

AltaGas is authorized to issue an unlimited number of voting common shares. AltaGas is also authorized to issue preferred 
shares not to exceed 50 percent of the voting rights attached to the issued and outstanding common shares. 

Common Shares 

On June 6, 2016, AltaGas closed a public offering of 14,685,000 common shares, on a bought deal basis, at an issue price of 
$30 per common share, for total gross proceeds of approximately $440.6 million. 

Premium DividendTM, Dividend Reinvestment and Optional Cash Purchase Plan (DRIP or the Plan) 
The  Plan  consists  of  three  components:  a  Premium  Dividend™  component,  a  Dividend  Reinvestment  component  and  an 
Optional Cash Purchase component. 

The  Plan  provides  eligible  holders  of  common  shares  with  the  opportunity  to,  at  their  election,  either:  (1)  reinvest  the  cash 
dividends paid by AltaGas on their common shares towards the purchase of new common shares at a 3 percent discount to the 
average  market  price  (as  defined  below)  of  the  common  shares  on  the  applicable  dividend  payment  date  (the  Dividend 

Reinvestment component of the Plan); or (2) reinvest the cash dividends paid by AltaGas on their common shares towards the 
purchase  of  new  common shares at  a 3  percent  discount to  the average market price  (as  defined  below)  on  the  applicable 
dividend  payment  date  and  have  these  additional  common  shares  of  AltaGas  exchanged  for  a  cash  payment  equal  to  101 
percent of the reinvested amount (the Premium DividendTM component of the Plan).   

In  addition,  the  Plan  provides  shareholders  who  are  enrolled  in  the  Dividend  Reinvestment  component  of  the  Plan  with  the 
opportunity to purchase new common shares at the average market price (with no discount) on the applicable dividend payment 
date (the Optional Cash Purchase component of the Plan). 

Each of the components of the Plan are subject to prorating and other limitations on availability of new common shares in certain 
events. The "average market price", in respect of a particular dividend payment date, refers to the arithmetic average (calculated 
to four decimal places) of the daily volume weighted average trading prices of common shares on the Toronto Stock Exchange 
for  the  trading  days  on  which  at  least  one  board  lot  of  common  shares  is  traded  during  the  10  business  days  immediately 
preceding the applicable dividend payment date. Such trading prices will be appropriately adjusted for certain capital changes 
(including  common  share  subdivisions,  common  share  consolidations,  certain  rights  offerings  and  certain  dividends). 
Shareholders  resident  outside  of  Canada  are  not  entitled  to  participate  in  the  Premium  DividendTM  component  of  the  Plan. 
Shareholders resident outside of Canada (other than the U.S.) may participate in the Dividend Reinvestment component or the 
Optional Cash Purchase component of the Plan only if their participation is permitted by the laws of the jurisdiction in which they 

TM Denotes trademark of Canaccord Genuity Corp. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report97  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
                                                           
reside and provided that AltaGas is satisfied in its sole discretion, that such laws do not subject the Plan or AltaGas to additional 
legal or regulatory requirements.   

Common Shares Issued and Outstanding 
January 1, 2016 
Shares issued on public offering, net of issuance costs 
Shares issued for cash on exercise of options   
Deferred taxes on share issuance cost 
Shares issued under DRIP 
December 31, 2016 
Shares issued for cash on exercise of options 
Deferred taxes on share issuance costs 
Shares issued under DRIP 
Issued and outstanding at December 31, 2017 

Preferred Shares 

Number of 
 shares 

  146,281,247   $ 

  14,685,000  
  337,750  
  — 
  5,602,836  
  166,906,833  
  240,125  
  — 
  8,132,258  
  175,279,216   $ 

Amount   
  3,168.1  
  422.2  
  9.3  
  0.2  
  173.6  
  3,773.4  
  6.5  
  (8.3) 
  236.3  
  4,007.9  

As at 

  December 31, 2017 

December 31, 2016 

Issued and Outstanding 

Number of shares 

Amount  Number of shares 

Series A   

Series B 

Series C 

Series E   

Series G 

Series I 

Series K 

Share issuance costs, net of taxes  

  5,511,220   $ 

  2,488,780  

  8,000,000  

  8,000,000  

  8,000,000  

  8,000,000  

  12,000,000  

  137.8  

  62.2  

  205.6  

  200.0  

  200.0  

  200.0  

  300.0  

  (27.9)  

  5,511,220   $ 

  2,488,780  

  8,000,000  

  8,000,000  

  8,000,000  

  8,000,000  

  — 

  52,000,000   $ 

  1,277.7  

  40,000,000   $ 

Amount 

  137.8  

  62.2  

  205.6  

  200.0  

  200.0  

  200.0  

  — 

  (20.5) 

  985.1  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report98 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table outlines the characteristics of the cumulative redeemable preferred shares (a): 

Right to convert 
into(d) 
Series B 
Series A 

Current 
yield 

Redemption price 
per share 

Annual dividend 
per share(b) 
$0.845 
Floating (f) 
US$1.3225 
$1.25 

Redemption and conversion 
option date(c)(d) 
September 30, 2020 
September 30, 2020 (g) 
September 30, 2022 
December 31, 2018 

3.38% 
Floating (f) 
5.29% 
5.00% 

Series A (e) 
Series B (f) 
Series C (h) 
Series E (e) 
Series G (e) 
Series I (i) 
Series K (j) 
Series L 
(a)  The table above only includes those series of preferred shares that are currently issued and outstanding. The Corporation is authorized to issue up to 8,000,000 

September 30, 2019 
December 31, 2020 

Series D 
Series F 

Series H 
Series J 

$1.1875 
$1.3125 

US$25 
$25 

4.75% 
5.25% 

March 31, 2022 

$25 
$25 

$25 
$25 

5.00% 

$1.25 

$25 

of each of Series D Shares, Series F Shares, Series H Shares, and Series J Shares, and up to 12,000,000 of Series L Shares, subject to certain conditions, 

upon conversion by the holders of the applicable currently issued and outstanding series of preferred shares noted opposite such series in the table on the 

applicable conversion option date. If issued upon the conversion of the applicable series of preferred shares, Series F Shares, Series H Shares, Series J 

Shares, and Series L Shares are also redeemable for $25.50, and Series D Shares are redeemable for US$25.50 on any date after the applicable conversion 

option date, plus all accrued but unpaid dividends to, but excluding, the date fixed for redemption.     

(b)  The holders of Series A Shares, Series C Shares, Series E Shares, Series G Shares, Series I Shares and Series K Shares are entitled to receive a cumulative 

quarterly fixed dividend as and when declared by the Board of Directors. The holders of Series B Shares are entitled to receive a quarterly floating dividend as 
and when declared by the Board of Directors. If issued upon the conversion of the applicable series of Preferred Shares, the holders of Series D Shares, Series 

F Shares, Series H Shares, Series J Shares and Series L Shares will be entitled to receive a quarterly floating dividend as and when declared by the Board of 

Directors. 

(c)  AltaGas may, at its option, redeem all or a portion of the outstanding shares for the redemption price per share, plus all accrued and unpaid dividends on the 

applicable redemption option date and on every fifth anniversary thereafter. 

(d)  The holder will have the right, subject to certain conditions, to convert their preferred shares of a specified series into Preferred Shares of that other specified 

series as noted in this column of the table on the applicable conversion option date and every fifth anniversary thereafter. 

(e)  Holders will be entitled to receive cumulative quarterly fixed dividends, which will reset on the redemption and conversion option date  and every fifth year 

thereafter, at a rate equal to the sum of the then five-year Government of Canada bond yield plus 2.66 percent (Series A Shares), 3.17 percent (Series E 

Shares), and 3.06 percent (Series G Shares).     

(f)  Holders of Series B Shares will be entitled to receive cumulative quarterly floating dividends, which will reset each quarter thereafter at a rate equal to the sum 

of the then 90-day government of Canada Treasury Bill rate plus 2.66 percent. Each quarterly dividend is calculated as the annualized amount multiplied by the 

number of days in the quarter, divided by the number of days in the year. Commencing December 31, 2017, the floating quarterly dividend rate for Series B 

Shares is $0.21760 per share for the period starting December 31, 2017 to, but excluding, March 31, 2018.   

(g)  Series B Shares can be redeemed for $25.50 per share on any date after September 30, 2015 that is not a Series B conversion date, plus all accrued and 

unpaid dividends to, but excluding, the date fixed for redemption. 

(h)  Holders of Series C Shares will be entitled to receive cumulative quarterly fixed dividends, which will reset on the redeemable and conversion option date and 

every fifth year thereafter, at a rate equal to the sum of the five-year U.S. Government bond yield plus 3.58 percent.   

(i)  Holders of Series I Shares will be entitled to receive cumulative quarterly fixed dividends, which will reset on the redeemable and conversion option date and 

every fifth year thereafter, at a rate equal to the then five-year Government of Canada bond yield plus 4.19 percent, provided that, in any event, such rate shall 

not be less than 5.25 percent per annum. 

(j)  Holders of Series K Shares will be entitled to receive cumulative quarterly fixed dividends, which will reset on the redeemable and conversion option date and 

every fifth year thereafter, at a rate equal to the then five-year Government of Canada bond yield plus 3.80 percent, provided that, in any event, such rate shall 

not be less than 5.00 percent per annum. 

Share Option Plan 

AltaGas  has  an  employee  share  option  plan  under  which  employees  and  directors  are  eligible  to  receive  grants.  As  at 
December 31, 2017, 12,994,161 shares were reserved for issuance under the plan. As at December 31, 2017, options granted 
under the plan have a term between six and ten years until expiry and vest no longer than over a four-year period. 

As at December 31, 2017, unexpensed fair value of share option compensation cost associated with future periods was $1.3 
million (December 31, 2016 - $1.0 million). 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report99  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table summarizes information about the Corporation’s share options: 

As at 

Share options outstanding, beginning of year 
Granted 
Exercised 
Forfeited 
Share options outstanding, end of year 
Share options exercisable, end of year 
(a)  Weighted average. 

December 31, 2017 

December 31, 2016 

Options outstanding 

Options outstanding 

Number of 
options 
  4,119,386   $ 
  848,000  
  (240,125) 
  (193,500) 
  4,533,761   $ 
  3,326,197   $ 

Exercise 
price(a)   
  32.39  
  30.80  
  24.63  
  36.36  
  32.35  
  31.93  

Number of 
options 
  4,559,261   $ 
  89,500  
  (337,750) 
  (191,625) 
  4,119,386   $ 
  3,279,133   $ 

Exercise 
price(a)   
  32.02  
  31.45  
  25.28  
  35.60  
  32.39  
  30.56  

As at December 31, 2017, the aggregate intrinsic value of the total options exercisable was $6.0 million (December 31, 2016 - 
$16.5 million), the total intrinsic value of options outstanding was $6.0 million (December 31, 2016 - $16.8 million) and the total 

intrinsic value of options exercised was $1.4 million (December 31, 2016 - $2.6 million). 

The following table summarizes the employee share option plan as at December 31, 2017: 

Options outstanding 

Options exercisable 

$14.24 to $18.00 
$18.01 to $25.08 
$25.09 to $50.89 

Number 
  outstanding 

  157,750   $ 
  480,975  
  3,895,036  
  4,533,761   $ 

average 
  exercise price 
  15.22  
  20.88  
  34.45  
  32.35  

Weighted  Weighted average  
remaining 

Number 
contractual life  exercisable 

Weighted  Weighted average 
remaining 
contractual life 
  1.29  
  2.69  
  3.75  
  3.48  

average 
  exercise price 
  15.22  
  20.88  
  34.89  
  31.93  

  1.29  
  2.69  
  4.04  
  3.80  

  157,750   $ 
  480,975  
  2,687,472  
  3,326,197   $ 

The fair value of each option granted is estimated on the date of grant using the Black-Scholes-Merton option pricing model. The 
weighted average grant date fair value and assumptions are as follows: 

2016 
Year ended December 31 
  2.09  
Fair value per option ($) 
  1.12  
Risk-free interest rate (%) 
  6  
Expected life (years) 
  20.65  
Expected volatility (%) 
  1.98  
Annual dividend per share ($) 
Forfeiture rate (%) (a) 
  16.00  
(a)  Effective January 1, 2017, AltaGas adopted ASU No. 2016-09 and elected to account for forfeitures when they occur instead of estimating the number of 

2017 
  1.91  
  1.31  
  6  
  21.05  
  2.12  
  — 

awards that are expected to vest. Refer to Note 2.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report100 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
MTIP and DSUP 

AltaGas has a MTIP for employees and executive officers, which includes RUs and PUs with vesting periods between 36 to 44 
months from the grant date. In addition, AltaGas has a DSUP, which allows granting of DSUs to directors. DSUs granted under 
the DSUP vests immediately but settlement of the DSUs occur when the individual ceases to be a director.   

PUs, RUs, and DSUs 
(number of units) 
Balance, beginning of year 
Granted 
Additional units added by performance factor 
Vested and paid out 
Forfeited   
Units in lieu of dividends 
Outstanding, end of year 

  December 31, 2017 

December 31, 2016 

  364,839  
  386,126  
  24,301  
  (221,775) 
  (27,279) 
  38,337  
  564,549  

  409,037  
  91,288  
  — 
  (136,359) 
  (13,565) 
  14,438  
  364,839  

For  the  year  ended  December 31,  2017,  the  compensation  expense  recorded  for  the  MTIP  and  DSUP  was  $9.1  million 

(2016  -  $7.0  million).  As  at  December 31,  2017,  the  unrecognized  compensation  expense  relating  to  the  remaining  vesting 
period for the MTIP was $8.4 million (December 31, 2016 - $11.9 million) and is expected to be recognized over the vesting 
period. 

22.  NET INCOME PER COMMON SHARE 

The following table summarizes the computation of net income per common share: 

For the year ended December 31 
Numerator: 

Net income applicable to controlling interests 
Less: Preferred share dividends 
Net income applicable to common shares 

Denominator: 
(millions) 

Weighted average number of common shares outstanding 
Dilutive equity instruments(a) 
Weighted average number of common shares   
   outstanding - diluted 

Basic net income per common share 
Diluted net income per common share 
(a) 

2017 

2016 

  91.6   $ 
  (61.3) 
  30.3   $ 

  203.5  
  (48.1) 
  155.4  

  171.0  
  0.3  

  171.3  

  0.18   $ 
  0.18   $ 

  157.2  
  0.4  

  157.6  
  0.99  
  0.99  

$ 

$ 

$ 
$ 

Includes all options that have a strike price lower than the share price of AltaGas' common shares as at December 31, 2017 and 2016. 

For the year ended December 31, 2017, 2.8 million of share options (2016 – 2.2 million) were excluded from the diluted net 
income per share calculation as their effects were anti-dilutive. 

23.  OTHER INCOME   

Year ended December 31 
Gains (losses) from sale of assets 
Interest income and other revenue 
Unrealized gains from held-for-trading assets 

$ 

$ 

2017 
  (2.7)  $ 
  10.3   
  3.6   

  11.2   $ 

2016 
  4.2  
  3.9  
  0.5  
  8.6  

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report101  
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
24.  OPERATING LEASES 

Certain of AltaGas’ revenues are obtained through power purchase agreements or take-or-pay contracts whereby AltaGas is the 
lessor in these operating  lease  arrangements.  Minimum  lease payments  received are amortized over  the  term of  the lease. 
Contingent rentals are recorded when the condition that created the present obligation to make such payments occurs such as 

when actual electricity is generated and delivered. The carrying value of property, plant, and equipment associated with these 
leases was $3.0 billion as at December 31, 2017 (December 31, 2016 - $3.1 billion). For the year ended December 31, 2017, the 
total revenue earned from minimum lease payments was $290.8 million (2016 - $238.2 million) and from contingent rentals was 
$175.6 million (2016 - $116.3 million). 

The following table sets forth the future fixed minimum revenue related to the operating leases for the years ended December 31: 

2018 
2019 
2020 
2021 
2022 

  289.7  
  287.4  
  250.2  
  208.8  
  194.5  

25.  PENSION PLANS AND RETIREE BENEFITS 

The costs of the defined benefit and post-retirement benefit plans are based on management's estimate of the future rate of 
return on the fair value of pension plan assets, salary escalations, mortality rates and other factors affecting the payment of future 
benefits. 

Defined Contribution Plan 

AltaGas has a defined contribution (DC) pension plan for substantially all employees who are not members of defined benefit 
plans. The pension cost recorded for the DC plan was $8.4 million for the year ended December 31, 2017 (2016 - $8.1 million). 

Defined Benefit Plans   

AltaGas has several defined benefit pension plans in Canada and the United States for unionized and non-unionized employees. 
These benefit plans are funded. 

Supplemental Executive Retirement Plan (SERP) 

AltaGas has non-registered, defined benefit plans that provide defined benefit pension benefits to eligible executives based on 
average  earnings,  years  of  service  and  age  at  retirement.  The  SERP  benefits  will  be  paid  from  the  general  revenue  of  the 
Corporation as payments come due. Security will be provided for the SERP benefits through a letter of credit within a retirement 
compensation arrangement trust account.   

Post-Retirement Benefits 

AltaGas has several post-retirement benefit plans for unionized and non-unionized employees in Canada and the United States. 
Benefits provided to retired employees are limited to the payment of life insurance and health insurance premiums. These benefit 
plans  are  not  funded,  except  for  one  plan.  Post-retirement  benefit  plans  in  the  United  States  provide  certain  medical  and 
prescription  drug  benefits  to  eligible  retired  employees,  their  spouses  and  covered  dependents.  Benefits  are  based  on  a 
combination of the retiree's age and years of service at retirement. These benefit plans are funded. 

AltaGas’ most recent actuarial valuation of the Canadian defined benefit plans for funding purposes was completed in 2016. 

AltaGas is required to file an actuarial valuation of its Canadian defined benefit plans with the pension regulators at least every 
three years. The next actuarial valuation for funding purposes is required to be completed as of a date no later than December 
31, 2019 and is expected to be filed with the pension regulators in 2020. Actuarial valuations are required annually for AltaGas’ 
U.S. defined benefit plans. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report102 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table summarizes the details of the defined benefit plans, including the SERP and post-retirement plans in Canada 
and the United States: 

Year ended December 31, 2017 
Accrued benefit obligation 
Balance, beginning of year   
Actuarial loss (gain) 
Current service cost 
Member contributions 
Interest cost 
Benefits paid 
Expenses paid 
Plan settlements 
Foreign exchange translation 
Balance, end of year 

Plan assets 
Fair value, beginning of year   
Actual return on plan assets 
Employer contributions 
Member contributions 
Benefits paid 
Expenses paid 
Foreign exchange translation 
Fair value, end of year   
Net amount recognized 

Canada 

United States 

Total   

Post-   

Post-   

Defined    Retirement 
Benefits 
Benefit 

Defined  Retirement 
Benefits 
  Benefit 

Post- 
Defined  Retirement 
Benefits 
  Benefit 

$ 

$ 

$ 

$ 
$ 

  150.0   $ 
  8.3  
  7.9  
  0.2  
  5.8  
  (6.3) 
  (0.3) 
  — 
  — 
  165.6   $ 

  101.5   $ 
  8.5  
  11.6  
  0.2  
  (6.3) 
  (0.3) 
  — 
  115.2   $ 
  (50.4)  $ 

  16.4   $ 
  (1.6) 
  0.7  
  — 
  0.6  
  (0.3) 
  — 
  — 
  — 
  15.8   $ 

  6.8   $ 
  0.4  
  1.2  
  — 
  (0.3) 
  — 
  — 
  8.1   $ 
  (7.7)  $ 

  290.5   $ 
  23.2  
  8.0  
  — 
  11.7  
  (8.6) 
  (0.8) 
  — 
  (20.2) 
  303.8   $ 

  226.9   $ 
  37.9  
  9.5  
  — 
  (8.6) 
  (0.8) 
  (16.2) 
  248.7   $ 
  (55.1)  $ 

  72.7   $ 
  14.4  
  1.8  
  — 
  2.9  
  (3.2) 
  (0.1) 
  (0.5) 
  (5.3) 
  82.7   $ 

  440.5   $ 
  31.5  
  15.9  
  0.2  
  17.5  
  (14.9) 
  (1.1) 
  — 
  (20.2) 
  469.4   $ 

  67.2   $ 
  11.0  
  0.6  
  — 
  (3.2) 
  (0.1) 
  (4.7) 
  70.8   $ 
  (11.9)  $ 

  328.4   $ 
  46.4  
  21.1  
  0.2  
  (14.9) 
  (1.1) 
  (16.2) 
  363.9   $ 
  (105.5)  $ 

  89.1  
  12.8  
  2.5  
  — 
  3.5  
  (3.5) 
  (0.1) 
  (0.5) 
  (5.3) 
  98.5  

  74.0  
  11.4  
  1.8  
  — 
  (3.5) 
  (0.1) 
  (4.7) 
  78.9  
  (19.6) 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report103  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2016 
Accrued benefit obligation 
Balance, beginning of year   
Actuarial loss (gain) 
Current service cost 
Member contributions 
Interest cost 
Benefits paid 
Expenses paid 
Net transfer in (out) (including the effect of 

acquisitions/divestitures) 

Plan amendments 
Plan settlements 
Foreign exchange translation 
Balance, end of year 

Plan assets 
Fair value, beginning of year   
Actual return on plan assets 
Employer contributions 
Member contributions 
Benefits paid 
Expenses paid 
Acquisitions/ divestitures 
Plan settlements 
Foreign exchange translation 
Fair value, end of year   
Net amount recognized 

Canada 

United States 

Total   

Post-   

Post-   

Defined    Retirement 
Benefits 
Benefit 

Defined  Retirement 
Benefits 
  Benefit 

Post- 
Defined  Retirement 
Benefits 
  Benefit 

$ 

$ 

$ 

$ 
$ 

  135.1   $ 
  7.9  
  7.0  
  0.2  
  5.6  
  (5.7) 
  (0.3) 

  0.2  
  — 
  — 
  — 
  150.0   $ 

  93.5   $ 
  6.1  
  7.5  
  0.2  
  (5.7) 
  (0.3) 
  0.2  
  — 
  — 
  101.5   $ 
  (48.5)  $ 

  14.7   $ 
  0.8  
  0.6  
  — 
  0.6  
  (0.3) 
  — 

  — 
  — 
  — 
  — 
  16.4   $ 

  5.7   $ 
  0.2  
  1.2  
  — 
  (0.3) 
  — 
  — 
  — 
  — 
  6.8   $ 
  (9.6)  $ 

  280.0   $ 
  8.8  
  7.1  
  — 
  11.8  
  (8.2) 
  — 

  — 
  — 
  (0.9) 
  (8.1) 
  290.5   $ 

  214.8   $ 
  15.9  
  11.5  
  — 
  (8.2) 
  — 
  — 
  (0.9) 
  (6.2) 
  226.9   $ 
  (63.6)  $ 

  88.0   $ 
  (13.4) 
  1.9  
  — 
  3.9  
  (2.9) 
  — 

  — 
  (2.0) 
  — 
  (2.8) 
  72.7   $ 

  415.1   $ 
  16.7  
  14.1  
  0.2  
  17.4  
  (13.9) 
  (0.3) 

  0.2  
  — 
  (0.9) 
  (8.1) 
  440.5   $ 

  66.2   $ 
  4.9  
  0.9  
  — 
  (2.9) 
  — 
  — 
  — 
  (1.9) 
  67.2   $ 
  (5.5)  $ 

  308.3   $ 
  22.0  
  19.0  
  0.2  
  (13.9) 
  (0.3) 
  0.2  
  (0.9) 
  (6.2) 
  328.4   $ 
  (112.1)  $ 

  102.7  
  (12.6) 
  2.5  
  — 
  4.5  
  (3.2) 
  — 

  — 
  (2.0) 
  — 
  (2.8) 
  89.1  

  71.9  
  5.1  
  2.1  
  — 
  (3.2) 
  — 
  — 
  — 
  (1.9) 
  74.0  
  (15.1) 

The following amounts were included in the Consolidated Balance Sheets: 

December 31, 2017 

December 31, 2016 

Defined 
Benefit 

Post- 
 Retirement 
  Benefits 

  Defined 
  Benefit 

Total 

Post- 
 Retirement 
  Benefits 

Other assets (note 10) 
Accounts payable and accrued liabilities 
Future employee obligations 

$ 

$ 

  —  $ 

  (0.6) 
  (104.9) 
  (105.5)  $ 

  —  $ 
  — 
  (19.6) 
  (19.6)  $ 

  —  $ 

  —  $ 

  (0.6) 
  (124.5) 
  (125.1)  $ 

  (0.5) 
  (111.6) 
  (112.1)  $ 

The funded status based on the accumulated benefit obligation for all defined benefit plans were: 

Total 
  2.8   $ 
  2.8  
  (0.5) 
  — 
  (17.9) 
    (129.5) 
  (15.1)  $    (127.2) 

Accumulated benefit obligation (a) 
Fair value of plan assets 
Funded status 
(a)  Accumulated benefit obligation differs from accrued benefit obligation in that it does not include an assumption with respect to future compensation levels. 

$ 

$ 

Canada 
  (143.9)  $ 
  115.2  
  (28.7)  $ 

United 
States 
  (274.2)  $ 
  248.7  
  (25.5)  $ 

December 31, 2016 
Canada 
  (128.9)  $ 
  101.5  
  (27.4)  $ 

 United States 
  (262.1) 
  226.9  
  (35.2) 

December 31, 2017 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report104 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following amounts were not recognized in the net periodic benefit cost and recorded in the other comprehensive losses: 

Canada 

United States 

Total 

Year ended December 31, 2017 
Past service cost 
Net actuarial loss 
Recognized in AOCI pre-tax 

Increase (decrease) by the amount   
   included in deferred tax liabilities 
Net amount in AOCI after-tax 

Year ended December 31, 2016 
Past service cost 
Net actuarial loss 
Recognized in AOCI pre-tax 

Increase (decrease) by the amount   
   included in deferred tax liabilities 
Net amount in AOCI after-tax 

$ 

$ 

$ 

$ 

$ 

$ 

Post-   

Post-   

Defined    Retirement 
Benefits 
Benefit 

Defined  Retirement 
Benefits 
  Benefit 

  (0.4)  $ 

  (13.9) 
  (14.3)  $ 

  —  $ 

  (1.3) 
  (1.3)  $ 

  —  $ 
  — 
  —  $ 

  —  $ 
  — 
  —  $ 

Post- 
Defined  Retirement 
Benefits 
  Benefit 
  — 
  (1.3) 
  (1.3) 

  (13.9) 
  (14.3)  $ 

  (0.4)  $ 

  4.0  
  (10.3)  $ 

  0.3  
  (1.0)  $ 

  (0.1) 
  (0.1)  $ 

  — 
  —  $ 

  3.9  
  (10.4)  $ 

  0.3  
  (1.0) 

Canada 

United States 

Total 

Post-   

Post-   

Defined    Retirement 
Benefits 
Benefit 

Defined  Retirement 
Benefits 
  Benefit 

  (0.5)  $ 

  (13.7) 
  (14.2)  $ 

  —  $ 

  (1.0) 
  (1.0)  $ 

  —  $ 
  — 
  —  $ 

  (0.3)  $ 
  — 
  (0.3)  $ 

Post- 
Defined  Retirement 
Benefits 
  Benefit 
  (0.3) 
  (1.0) 
  (1.3) 

  (13.7) 
  (14.2)  $ 

  (0.5)  $ 

  3.8  
  (10.4)  $ 

  0.3  
  (0.7)  $ 

  — 
  —  $ 

  0.1  
  (0.2)  $ 

  3.8  
  (10.4)  $ 

  0.4  
  (0.9) 

The costs of the defined benefit and post-retirement benefit plans are based on Management's estimate of the future rate of 
return on the fair value of pension plan assets, salary escalations, mortality rates and other factors affecting the payment of future 
benefits.   

Amounts to be amortized in the next fiscal year from AOCI 
Past service costs 
Actuarial losses 
Total 

The net pension expense by plan for the period was as follows: 

Defined 
  Benefit 
  0.1  
  0.9  
  1.0  

$ 

$ 

$ 

$ 

Post- 
Retirement 
Benefits 
  — 
  — 
  — 

Year ended December 31, 2017 

Canada 

United States 

Total 

Post- 
Defined    retirement   
Benefits 
Benefit 

Post- 
Defined    retirement   
Benefits 
Benefit 

$ 

$ 

  7.9   $ 
  5.8  
  (5.9) 
  — 
  0.2  
  0.7  
  1.3  
  10.0   $ 

  0.7   $ 
  0.6  
  (0.2) 
  — 
  — 
  — 
  0.1  
  1.2   $ 

  8.0   $ 

  11.7  
  (16.9) 
  — 
  — 
  — 
  6.5  
  9.3   $ 

  1.8   $ 
  2.9  
  (4.7) 
  0.2  
  — 
  — 
  (0.3) 
  (0.1)  $ 

Post- 
Defined    retirement   
Benefits 
Benefit 
  2.5  
  3.5  
  (4.9) 
  0.2  
  — 
  — 
  (0.2) 
  1.1  

  15.9   $ 
  17.5  
  (22.8) 
  — 
  0.2  
  0.7  
  7.8  
  19.3   $ 

Current service cost 
Interest cost 
Expected return on plan assets 
Settlement of plan 
Amortization of past service cost 
Amortization of net actuarial loss 
Amortization of regulatory asset/liability 
Net benefit cost (income) recognized 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report105  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2016 

Canada 

United States 

Total 

Defined   
Benefit 

Post- 
retirement   
Benefits 

  7.0   $ 
  5.6  
  (5.3) 
  — 
  0.2  
  0.8  
  1.2  
  9.5   $ 

  0.6   $ 
  0.6  
  (0.2) 
  — 
  — 
  0.1  
  — 
  1.1   $ 

$ 

$ 

Defined   
Benefit 

  7.1   $ 

  11.8  
  (15.1) 
  0.1  
  — 
  — 
  6.3  
  10.2   $ 

Post- 
retirement   
Benefits 

  1.9   $ 
  3.9  
  (4.5) 
  — 
  — 
  — 
  0.8  
  2.1   $ 

Defined   
Benefit 
  14.1  $ 
  17.4   
  (20.4)  
  0.1   
  0.2   
  0.8   
  7.5   
  19.7   

Post- 
retirement   
Benefits 
  2.5  
  4.5  
  (4.7) 
  — 
  — 
  0.1  
  0.8  
  3.2  

Current service cost 
Interest cost 
Expected return on plan assets 
Settlement (gain) loss 
Amortization of past service cost 
Amortization of net actuarial loss 
Amortization of regulatory asset 
Net benefit cost recognized 

The objective of the Corporation's investment policy is to maximize long-term total return while protecting the capital value of the 
fund from major market fluctuations through diversification and selection of investments. 

The objective for fund returns, over three to five-year periods, is the sum of two components - a passive component, which is the 
benchmark index market returns for the asset mix in effect, plus the added value expected from active management. It is the 
Corporation’s belief that the potential additional returns justify the additional risk associated with active management. The risk 

inherent in the investment strategy over a market cycle (a three-to five-year period) is two-fold. There is a risk that the market 
returns, as measured by the benchmark returns, will not be in line with expectations. The other risk is that the expected added 
value  of  active  management  over  passive  management  will  not  be  realized  over  the  time  period  prescribed  in  each  fund 
manager's mandate. There is also the risk of annual volatility in returns, which means that in any one year the actual return may 
be very different from the expected return. 

Cash and money market investments may be held from time to time as short-term investment decisions at the discretion of the 
fund manager(s) within the constraints prescribed by their mandate(s).   

The Corporation has a target asset mix for the Canadian plans of 45 percent to 55 percent fixed income assets. The target asset 
mix for the U.S. plans is 33 percent fixed income assets. These objectives have taken into account the nature of the liabilities and 
the risk-reward tolerance of the Corporation.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report106 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The collective investment mixes for the plans are as follows as at December 31, 2017: 

Canada 
Cash and short-term equivalents 
Canadian equities 
Foreign equities 
Fixed income 
Real estate 

United States 
Cash and short-term equivalents 
Foreign equities 
Fixed income 

Total 
Cash and short-term equivalents 
Canadian equities 
Foreign equities 
Fixed income 
Real estate 

Fair value 

  6.2   $ 

  40.8  
  22.7  
  47.1  
  6.5  
  123.3   $ 

Level 1 

  6.2   $ 

  40.8  
  22.7  
  47.0  
  — 
  116.7   $ 

Fair value 

  0.8   $ 

  212.0  
  106.7  
  319.5   $ 

Level 1 

  0.8   $ 

  212.0  
  106.7  
  319.5   $ 

Fair value 

  7.0   $ 

  40.8  
  234.7  
  153.8  
  6.5  
  442.8   $ 

Level 1 

  7.0   $ 

  40.8  
  234.7  
  153.7  
  — 
  436.2   $ 

$ 

$ 

$ 

$ 

$ 

$ 

Percentage of   
Plan Assets 
(%) 
  5.0  
  33.1  
  18.4  
  38.2  
  5.3  
  100.0  

Level 2 
  — 
  — 
  — 
  0.1  
  6.5  
  6.6  

Percentage of   
Plan Assets 
(%) 
  0.3  
  66.3  
  33.4  
  100.0  

Level 2 
  — 
  — 
  — 
  — 

Percentage of   
Plan Assets 
(%) 
  1.6  
  9.2  
  53.0  
  34.7  
  1.5  
  100.0  

Level 2 
  — 
  — 
  — 
  0.1  
  6.5  
  6.6  

Significant actuarial assumptions used in measuring   
      net benefit plan costs   
For the year ended December 31 
Discount rate (%) 
Expected long-term rate of return on plan assets (%) (a) 
Rate of compensation increase (%) 
Average remaining service life of active employees (years) 

(a) Only applicable for funded plans 

Significant actuarial assumptions used in measuring   
      benefit obligations   
As at December 31 
Discount rate (%) 
Rate of compensation increase (%) 

Defined 
Benefit 

2017 

2.65 - 4.20 
6.18 - 7.30 
2.75 - 4.00 
  12.7  

Post- 
Retirement 
Benefits 

4.00 - 4.20 
3.10 - 7.30 
3.25 
13.5 

Defined 
  Benefit 

2016 

2.70 - 4.50 
6.00 - 7.30 
2.75 - 4.00 
12.5 

Post- 
Retirement 
Benefits 

Defined 
Benefit 

2017 

Defined 
  Benefit 

2016 

Post- 
Retirement 
Benefits 

4.20 - 4.60 
3.10 - 7.30 
3.25 
13.6 

Post- 
Retirement 
Benefits 

2.80 - 3.70 
2.75 - 4.00 

3.60 - 3.70 
3.25 

2.65 - 4.20 
2.75 - 4.00 

4.00 - 4.20 
3.25 

The expected rate of return on assets is based on the current level of expected returns on risk free investments, the historical 
level of risk premium associated with other asset classes in which the portfolio is invested, and the expectations for future returns 
of each asset class. The expected return for each asset class was then weighted based on the target asset allocation to develop 

the expected rate of return on assets assumption for the portfolio.     

The discount rate is based on high-quality long-term corporate bonds, with maturities matching the estimated timing and amount 
of expected benefit payments. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report107  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The estimates for health care benefits take into consideration increased health care benefits due to aging and cost increases in 
the future. The assumed health care cost trend rates used to measure the expected cost of benefits  for the next year  were 
between 6.5 and 6.7 percent. The health care cost trend rates were assumed to decline to between 4.5 and 5 percent by 2029. 

The  assumed  health  care  cost  trend  rates  have  a  significant  effect  on  the  amounts  reported  for  health  care  plans.  A  one 
percentage point change in the assumed health care trend rates would have the following effects for 2017: 

Service and interest costs 
Accrued benefit obligation 

$ 
$ 

Increase 
  1.5  
  19.3  

$ 
$ 

Decrease 
  (1.1) 
  (15.0) 

The following table shows the expected cash flows for defined benefit pension and other-post retirement plans: 

Expected employer contributions: 

2018 

Expected benefit payments: 

2018 
2019 
2020 
2021 
2022 
2023 - 2027 

Defined  
Benefit  

  15.2  

  16.4  
  17.6  
  19.1  
  20.2  
  21.6  
  124.4  

$ 

$ 

$ 

$ 

$ 

$ 

Post- 
Retirement 
Benefits 

  3.0  

  3.2  
  3.3  
  3.5  
  3.7  
  3.9  
  21.7  

26.  COMMITMENTS, CONTINGENCIES AND GUARANTEES   

Commitments 

AltaGas  has  long-term  natural  gas  purchase  and  transportation  arrangements,  service  agreements,  storage  contract  and 
operating leases for office space, office equipment, rail cars, and automobile equipment, all of which are transacted at market 
prices and in the normal course of business. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report108 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
  
 
 
Future payments of these commitments at December 31, 2017 are estimated as follows: 

Gas purchase(a) 
Service agreement(b)(c)(d) 
Storage services(e) 
Capital projects(f) 
Operating leases(g) 

$ 

2018 
  362.4   $ 
  11.1  
  3.5  

2019 
  349.9   $ 
  21.2  
  3.5  

2020 
  342.2   $ 
  21.2  
  3.5  

2021 
  317.5   $ 
  14.9  
  3.6  

2022 
  285.3   $ 
  12.8  
  3.6  

2023 and 
beyond 
  224.6   $ 
  183.0  
  25.8  

Total 
  1,881.9  

  264.2  
  43.5  

  105.0  
  55.6  
  2,350.2  
(a)  AltaGas  enters  into  contracts  to  purchase  natural  gas  and  natural  gas  transportation  and  storage  services  from  various  suppliers  for  its  utilities.  These 

  105.0  
  9.0  
  491.0   $ 

  — 
  5.5  
  341.5   $ 

  — 
  4.6  
  306.3   $ 

  — 
  6.1  
  373.0   $ 

  — 
  18.3  
  392.9   $ 

  — 
  12.1  
  445.5   $ 

$ 

contracts, which have expiration dates that range from 2018 to 2033, are used to ensure that there is an adequate supply of natural gas to meet the needs of 

customers and to minimize exposure to market price fluctuations. 

(b) 

In 2014, AltaGas' Blythe facility entered into a Long-Term Service Agreement with Siemens to complete various upgrade and maintenance services on the 

Combustion Turbines (CT) at the Blythe facility over 116,000 equivalent operating hour per CT, or 20 years, whichever comes first. The LTSA has fixed fees 

that will be incurred in the five years following December 31, 2014 and variable fees on a per equivalent operating hour basis. As at December 31, 2017, the 

total commitment was $196.5 million payable over the next 17 years, of which $55.1 million is expected to be paid over the next five years.     

(c) 

In 2007, AltaGas entered into a service and maintenance agreement with Enercon GmbH for the wind turbines for Bear Mountain. AltaGas has an obligation to 

pay a minimum of $7.6 million over the next four years.   

(d) 
(e) 

In 2017, AltaGas entered into a 12-year service agreement for tug services to support the marine operations of RIPET. 
In 2009, AltaGas entered into a 20-year storage contract at the Dawn Hub in southwest Ontario. AltaGas is obligated to pay approximately $3.5 million per 

annum over the term of the contract for storage services. 

(f)  Commitments for capital projects. Estimated amounts are subject to variability depending on the actual construction costs. 

(g)  Operating leases include lease arrangements for office spaces, vehicles, rail cars, office and other equipment. 

Guarantees   

On October 2014, Heritage Gas Limited, a wholly-owned subsidiary of AltaGas, entered into a throughput service contract with 
Enbridge Inc. (formerly Spectra Energy Corp.) for the use of the expansion of its Algonquin Gas Transmission and Maritimes & 
Northeast Pipeline systems (the Atlantic Bridge Project). The contract will commence upon completion of the construction of the 
pipelines and it will expire 15 years thereafter. AltaGas has two guarantees outstanding that total US$91.7 million to stand by all 
payment obligations under the transportation agreement. 

Contingencies 

AltaGas and its subsidiaries are subject to various legal claims and actions arising in the normal course of business. While  the 
final outcome of such legal claims and actions cannot be predicted with certainty, the Corporation does not believe that the 
resolution of such claims and actions will have a material impact on the Corporation’s consolidated financial position or results of 
operations.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report109  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
27.  RELATED PARTY TRANSACTIONS 

In the normal course of business, AltaGas transacts with its subsidiaries, affiliates and joint ventures. Amounts due to or from 

related parties on the Consolidated Balance Sheets were measured at the exchange amount and were as follows: 

As at 
Due from related parties 
Accounts receivable (a) 
Long-term investments and other assets (b)(c)  

Due to related parties 
Accounts payable (d) 

(a)  Receivable from joint ventures.   

December 31, 
2017 

December 31, 
2016 

$ 

$ 

$ 

  0.8   $ 
  75.0  
  75.8   $ 

  3.2  
  3.2   $ 

  0.7  

  63.3  
  64.0  

  3.2  
  3.2  

(b)  AltaGas and one of its executives agreed to a loan in the principal amount of $0.8 million to be paid in full with accrued interest at the rate prescribed by the 

Income Tax Act (Canada) on the earlier of the date of employment termination and February 8, 2021. The provisions of the loan were amended in 2015 to 
include provision for forgiveness of the loan. In 2017, the loan was forgiven. 

(c)  AltaGas has provided a $100.0 million interest bearing secured loan facility to Petrogas of which $50.0 million is committed. The facility is available for Petrogas 

to draw  upon from time to  time  for  general  corporate  purposes. The  facility is subject to annual  renewal  and  has  a  maturity  date  of June  27, 2021. As  at 

December 31, 2017, Petrogas had drawn $75.0 million (December 31, 2016 - $62.5 million) under the facility.   

(d)  Payables to joint ventures. 

The following transactions with related parties have been recorded on the Consolidated Statements of Income for the year ended 
December 31, 2017 and 2016: 

Year ended December 31 

Revenue (a)(b) 
Cost of sales (c) 
Operating and administrative expenses (d) 
Other income (e) 

2017 
  15.0   $ 
  (6.5)  $ 
  —  $ 
  4.4   $ 

2016 

  16.1  
  (6.5) 

  0.7  
  1.3  

$ 
$ 

$ 
$ 

(a) 

(b) 

In the ordinary course of business, AltaGas sold natural gas and natural gas liquids to a joint venture and an affiliate.   

In 2016, PNG  recognized  revenue  of $6.8  million related to the recovery of development costs from  Triton LNG  Limited  Partnership for the PNG Pipeline 

Looping Project. 

(c) 

In the ordinary course of business, AltaGas obtained natural gas storage services from a joint venture as well as incurred costs related to the sale of natural gas 

liquids to an affiliate.   

(d)  Administrative costs recovered from joint ventures. In 2017, amount was offset by the expense associated with the forgiveness of the loan to an executive. 

(e) 

Interest income from an affiliate.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report110 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
28.  SUPPLEMENTAL CASH FLOW INFORMATION 

The following table details the changes in operating assets and liabilities from operating activities:   

For the year ended December 31 
Source (use) of cash: 
Accounts receivable 
Inventory 
Other current assets 
Regulatory assets (current) 
Accounts payable and accrued liabilities 
Customer deposits 
Regulatory liabilities (current) 
Other current liabilities 
Other operating assets and liabilities 

Changes in operating assets and liabilities   

The following cash payments have been included in the determination of earnings: 

For the year ended December 31 
Interest paid (net of capitalized interest) 
Income taxes paid 

2017 

2016 

  (55.5)  $ 
  4.7  
  7.0  
  (0.2) 
  85.5  
  (2.8) 
  (4.8) 
  13.0  
  (41.0) 

  5.9   $ 

  (6.1) 
  (14.4) 
  (20.8) 
  3.3  
  (4.6) 
  (4.6) 
  (4.1) 
  4.3  
  (30.5) 
  (77.5) 

2017 
  151.1   $ 
  36.3   $ 

2016 
  141.5  
  35.9  

$ 

$ 

$ 
$ 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report111  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
29.  SEGMENTED INFORMATION 

AltaGas  owns  and  operates  a  portfolio  of  assets  and  services  used  to  move  energy  from  the  source  to  the  end-user.  The 
following describes the Corporation’s four reporting segments: 

Gas 

  –   NGL processing and extraction plants; 

  –   transmission pipelines to transport natural gas and NGL; 
  –   natural gas gathering lines and field processing facilities; 
  –   purchase and sale of natural gas, including to commercial and industrial users; 
  –   natural gas storage facilities; 
  –  
  –  
  –   equity investment in Petrogas, a North American entity engaged in the marketing, storage and 

liquefied petroleum gas (LPG) terminal currently under construction; 
natural gas and NGL marketing; and 

distribution of NGL, drilling fluids, crude oil and condensate diluents. 

Power 

  –   natural  gas-fired,  wind,  biomass  and  hydro  power  generation  assets,  whereby  outputs  are 
generally  sold  under  long  term  power  purchase  agreements,  both  operational  and  under 
development; 
  –   energy storage; and 
  –   sale of power to commercial and industrial users in Alberta. 

Utilities 

  –   rate-regulated natural gas distribution assets in Michigan, Alaska, Alberta, British Columbia and 

Nova Scotia; and 

  –   rate-regulated natural gas storage in Michigan and Alaska. 

Corporate 

  –   the cost of providing corporate services, financing and general corporate overhead, investments 
in certain public and private entities, corporate assets, financing other segments and the effects 
of changes in the fair value of risk management contracts. 

Geographic Information 

Year ended December 31   
Revenue(a)     
Canada 
United States 

Total 
(a)  Operating revenue from external customers, excluding unrealized gains (losses) on risk management contracts. 

As at December 31 
Property, plant and equipment 

Canada 
United States 

Total 

2017  

2016 

  1,508.8   $ 
  1,109.9  
  2,618.7   $ 

  1,192.3  
  1,008.8  
  2,201.1  

2017 

2016 

  4,320.5   $ 
  2,369.3  
  6,689.8   $ 

  4,080.3  
  2,654.6  
  6,734.9  

$ 

$ 

$ 

$ 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report112 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
The following tables show the composition by segment:   

Year ended December 31, 2017 

Revenue 

Unrealized losses on risk management 

contracts 
Cost of sales 
Operating and administrative 
Accretion expenses 
Depreciation and amortization 
Provisions on assets (note 9) 
Income from equity investments   
Other income (loss) 
Foreign exchange gains   
Interest expense 
Income (loss) before income taxes 
Net additions (reductions) to:   

Gas 

$   1,008.0   $ 

Power 
  631.7   $   1,127.6   $ 

Utilities  Corporate 

Total 
  (151.8)  $    2,618.7  

Intersegment 
Elimination(a) 

  —  
  (647.0)  
  (165.0)  
  (3.9)  
  (68.6)  
  (6.6)  
  22.0   
  (0.9)  
  0.2   
  —  
  138.2   $ 

  —  
  (242.8)  
  (93.1)  
  (6.9)  
  (118.0)  
  (133.0)  
  6.8   
  0.8   
  —  
  — 
— 
  45.5   $ 

  (0.9)  
  (610.1)  
  (226.1)  
  (0.1)  
  (81.8)  
  —  
  2.6   
  3.9   
  —  
  — 
— 
  215.1   $ 

$ 

  3.2   $ 

  (61.6)  
  —  
  (99.1)  
  —  
  (14.0)  
  —  
  —  
  7.9   
  1.5   
  (170.3) 
— 
  (332.4)  $ 

  —  
  142.8   
  9.5   
  —  
  —  
  —  
  —  
  (0.5)  
  —  
  —  
  —  $ 

  (62.5) 
  (1,357.1) 
  (573.8) 
  (10.9) 
  (282.4) 
  (139.6) 
  31.4  
  11.2  
  1.7  
  (170.3) 
  66.4  

Property, plant and equipment(b) 
Intangible assets 

$ 
$ 
Intersegment transactions are recorded at market value.   

(a) 

  245.3   $ 
  2.8   $ 

  16.5   $ 
  13.2   $ 

  124.3   $ 
  2.1   $ 

  1.5   $ 
  2.2   $ 

  —  $ 
  —  $ 

  387.6  
  20.3  

(b)  Net additions to property, plant, and equipment, and intangible assets may not agree to changes reflected in the Consolidated Statement of Cash flow due to 

classification of business acquisition and foreign exchange changes on U.S. assets. 

Year ended December 31, 2016 

Corporate 

Intersegment 
Elimination(a) 

Total 
  (255.2)  $    2,201.1  

Revenue 

Unrealized gains (losses) on risk management 

contracts 
Cost of sales 
Operating and administrative 
Accretion expenses 
Depreciation and amortization 
Income (loss) from equity investments   
Other income (loss) 
Foreign exchange gains   
Interest expense 
Income (loss) before income taxes 
Net additions (reductions) to: 

Gas 
  804.1   $ 

Power 
  574.7   $   1,065.8   $ 

Utilities 

$ 

  — 
    (496.1) 
    (154.3) 
  (3.9) 
  (65.8) 
  7.6  
  4.8  
  — 
  — 
  96.4   $ 

  — 
    (200.5) 
    (100.1) 
  (7.0) 
    (108.7) 
  (6.8) 
  — 
  — 
  — 
  151.6   $ 

  0.5  
    (557.1) 
    (229.7) 
  (0.1) 
  (82.3) 
  2.6  
  1.7  
  — 
  — 
  201.4   $ 

$ 

  11.7   $ 

  (11.9) 
  — 
  (44.1) 
  — 
  (14.7) 
  — 
  2.6  
  4.0  
  (150.8) 
  (203.2)  $ 

  — 
  236.8  
  18.9  
  — 
  — 
  — 
  (0.5) 
  — 
  — 
  —  $ 

  (11.4) 
   (1,016.9) 
  (509.3) 
  (11.0) 
  (271.5) 
  3.4  
  8.6  
  4.0  
  (150.8) 
  246.2  

Property, plant and equipment(b) 
Intangible assets 

$ 
$ 
Intersegment transactions are recorded at market value.   

  193.0   $ 
  2.6   $ 

  95.0   $ 
  15.1   $ 

  112.7   $ 
  2.4   $ 

  4.3   $ 
  5.9   $ 

  —  $ 
  —  $ 

  405.0  
  26.0  

(a) 
(b)  Net additions to property, plant, and equipment, and intangible assets may not agree to changes reflected in the Consolidated Statement of Cash flow due to 

classification of business acquisition and foreign exchange changes on U.S. assets. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report113  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
The following table shows goodwill and total assets by segment: 

Gas 

Power 

Utilities 

Corporate 

Total 

As at December 31, 2017 

Goodwill 
Segmented assets 
As at December 31, 2016 

Goodwill 
Segmented assets 

30.  SUBSEQUENT EVENTS 

  152.6   $ 

$ 
  664.7   $ 
$    3,096.8   $    3,192.5   $    3,460.2   $ 

  —  $ 

  152.9   $ 

$ 
  703.1   $ 
$    2,826.3   $    3,501.3   $    3,586.4   $ 

  —  $ 

  —  $ 
  282.7   $ 

  817.3  
  10,032.2  

  —  $ 
  286.6   $ 

  856.0  
  10,200.6  

Subsequent events have been reviewed through February 28, 2018, the date these Consolidated Financial Statements  were 
issued. There were no subsequent events requiring disclosure or adjustment to the Consolidated Financial Statements. 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report114 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
 
 
 
  
Supplementary Quarterly Operating Information 

OPERATING HIGHLIGHTS 
GAS 

Total inlet gas processed (Mmcf/d)(1)   
Extraction volumes (Bbls/d)(1)(2) 
Frac spread - realized ($/Bbl)(1)(3) 
Frac spread - average spot price ($/Bbl)(1)(4) 

POWER 

Renewable power sold (GWh) 
Conventional power sold (GWh) 
Renewable capacity factor (%) 
Contracted conventional availability factor (%)(5) 

UTILITIES 

Canadian utilities 

Natural gas deliveries - end-use (PJ)(6) 
Natural gas deliveries - transportation (PJ)(6) 

U.S. utilities 

Natural gas deliveries end use (Bcf) (6) 
Natural gas deliveries transportation (Bcf)(6) 

Service sites(7) 

Degree day variance from normal - AUI (%)(8) 
Degree day variance from normal - Heritage Gas (%)(8) 
Degree day variance from normal - SEMCO Gas (%)(9) 
Degree day variance from normal - ENSTAR (%)(9)  

(1)  Average for the period. 

(2)  Includes Harmattan NGL processed on behalf of customers. 

Q4-17 

Q3-17 

Q2-17 

Q1-17 

Q4-16 

  1,424  
  68,306  

  1,322  
  64,026  

  1,300  
  58,885  

  1,404  
  71,958  

  1,337  
  69,687  

  18.02  
  30.66  

  14.96  
  21.28  

  9.06  
  10.98  

  10.56  
  17.26  

  301  
  1,059  
  27.5  

  96.3  

  681  
  992  
  70.3  

  99.6  

  499  
  409  
  50.7  

  99.9  

  148  
  385  
  9.5  

  96.0  

  6.11  
  8.40  

  196  
  374  
  18.8  

  99.8  

  11.2  

  1.6  

  3.7  

  1.3  

  4.8  

  1.5  

  13.5  

  1.9  

  10.8  

  1.5  

  24.3  

  5.9  

  10.3  

  30.2  

  22.8  

  14.2  

  10.9  
  581,518     575,602  
  (16.9) 
  (20.4) 

  4.0  
  (4.6) 

  4.8  
  (8.3) 

  5.7  
  (16.6) 

  11.5  
  575,084  

  15.4  

  14.2  
  576,829     574,875  

  (7.4) 
  (4.3) 

  (8.4) 
  (5.4) 

  (2.2) 
  (1.9) 

  (11.8) 
  9.6  

  (0.6) 
  (1.0) 

  (6.1) 
  (1.4) 

(3)  Realized frac spread or NGL margin, expressed in dollars per barrel of NGL, is derived from sales recorded by the segment during the period for frac 

exposed volumes plus the settlement value of frac hedges settled in the period less extraction premiums, divided by the total frac exposed volumes 

produced during the period. 

(4)  Average spot frac spread or NGL margin, expressed in dollars per barrel of NGL, is indicative of the average sales price that AltaGas receives for 

propane, butane and condensate less extraction premiums, before accounting for hedges,  divided by the respective frac exposed  volumes for the 

period.   

(5)  Calculated as the availability factor contracted under long-term tolling arrangements adjusted for occasions where partial or excess capacity payments 

have been added or deducted. 

(6)  Petajoule (PJ) is one million gigajoules (GJ). Bcf is one billion cubic feet.   

(7)  Service sites reflect all of the service sites of AUI, PNG, Heritage Gas, and U.S. Utilities, including transportation and non-regulated business lines. 

(8)  A degree day for AUI and Heritage Gas is the cumulative extent to which the daily mean temperature falls below 15 degrees Celsius at AUI and 18 
degrees  Celsius  at Heritage Gas.  Normal degree days are based  on a 20-year rolling  average. Positive variances from normal lead to increased 
delivery  volumes  from  normal  expectations.  Degree  day  variances  do  not  materially  affect  the  results  of  PNG  as  the  British  Columbia  Utilities 
Commission (BCUC) has approved a rate stabilization mechanism for its residential and small commercial customers. 

(9)  A degree day for U.S. Utilities is a measure of coldness, determined daily as the number of degrees the average temperature during the day in question 
is below 65 degrees Fahrenheit. Degree days for a particular period are determined by adding the degree days incurred during each day of the period. 

Normal degree days for a particular period are the average of degree days during the prior 15 years for SEMCO Energy Gas Company and during the 
prior 10 years for ENSTAR.   

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report115  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
Other Information 

DEFINITIONS 

Bbls/d 
Bcf 
GJ 
GWh 

Mcf 
Mmcf/d 
MW 
MWh 
MMBTU 
PJ 
US$ 

barrels per day 
billion cubic feet 
gigajoule 
gigawatt-hour 

thousand cubic feet 
million cubic feet per day 
megawatt 
megawatt-hour 
million British thermal unit 
petajoule 
United States dollar 

ABOUT ALTAGAS 

AltaGas is an energy infrastructure business with a focus on natural gas, power and regulated utilities. The Corporation creates 
value  by  acquiring,  growing  and  optimizing  its  energy  infrastructure,  including  a  focus  on  clean  energy  sources.  For  more 
information visit: www.altagas.ca. 

For further information contact: 

Investment Community 

1-877-691-7199 
investor.relations@altagas.ca 

AltaGas Ltd. Fourth Quarter and Full Year 2017 Report116 
 
 
 
 
 
 
 
 
 
 
For investor relations enquiries contact:
Tel: 1.403.691.7100
Toll Free: 1.877.691.7199
Email: investor.relations@altagas.ca
1700, 355 - 4th Avenue SW  Calgary, Alberta T2P 0J1

altagas.ca