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Northwest Natural Company

nwn · NYSE Utilities
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Employees 1001-5000
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FY2013 Annual Report · Northwest Natural Company
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AN ENVIRONMENT RICH WITH
POSSIBILITIES

2013 ANNUAL REPORT

CORPORATE PROFILE

NW Natural (NYSE: NWN) is a 

155-year-old natural gas local  

distribution and storage company 

headquartered in Portland, Oregon. 

NW Natural serves about 695,000  

utility customers in Oregon and 

OVERVIEW 

FINANCIAL

Financial facts ($000):

Operating revenues 

Utility margin 

Net income 

Southwest Washington, and provides 

Financial ratios (%): 

gas storage to customers on the 

Return on average common equity 

West Coast. In keeping with its steady 

Capital structure at year-end: 

growth, the company has increased 

dividends paid to shareholders for  

58 consecutive years.

SERVICE TERRITORY
AND STORAGE FACILITIES

WASHINGTON

ASTORIA

MIST STORAGE

VANCOUVER
GASCO LNG

PORTLAND

TRAINING
CENTER

LINCOLN CITY

SALEM

ALBANY

NEWPORT LNG

  Long-term debt 

  Common stock equity 

COMMON STOCK 

Shareholder data (000): 

Average shares outstanding – diluted 

Year-end shares outstanding 

Per share data ($): 

Diluted earnings 

Dividends paid 

Book value at year-end 

Market value at year-end 

Degree days 

Customers at year-end 

Employees at year-end 

THE DALLES

OPERATING

Gas sales and transportation deliveries (000 therms) 

1,146,431 

1,111,769 

EUGENE

OREGON

DIVIDENDS PAID ON COMMON STOCK (per share)
February 15 

COOS BAY

KEY

NW NATURAL SERVICE TERRITORY
TRAINING CENTER
REGIONAL RESOURCE CENTER
LNG PLANT
MIST STORAGE
GILL RANCH STORAGE
HEADQUARTERS

May 15    

August 15 

November 15 

Total dividends paid 

$ 1.825 

$ 1.790 

2013 

2012 

PERCENT
INCREASE
(DECREASE )

4 

3 

3 

- 

(2 ) 

2 

 -

1

3 

2

2 

(3 )

3 

5

 1

(1 )

 758,518 

353,884 

60,538 

730,607 

 344,527 

 58,779 

8.2 

47.6 

52.4 

27,027 

27,075 

2.24 

1.83 

27.77 

42.82 

8.2 

48.7 

51.3 

26,907    

26,917 

2.18 

1.79 

27.11 

44.20 

4,379 

694,873 

1,081 

4,152 

685,941   

1,092 

$ 0.455  

 $ 0.445  

0.455  

0.455  

0.460 

 0.445 

 0.445  

0.455 

NEVADA

DILUTED EARNINGS PER SHARE
(in dollars)

DIVIDENDS PAID PER SHARE
(in dollars)

SAN FRANCISCO

GILL RANCH

FRESNO

CALIFORNIA

$3.00

$2.50

$2.00

$1.50

$1.00

$0.50

$0.00

LOS ANGELES

2009

2010

2011

2012

2013

Diluted earnings per share were $2.24 in 2013, 
up 3% over 2012.

$1.85

$1.80

$1.75

$1.70

$1.65

$1.60

$1.55

$1.50

$1.45

2009

2010

2011

2012

2013

Annual dividends paid per share in 2013 
increased for the 58th consecutive year. The 
current indicated annual dividend is $1.84 per 
share.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3
LETTER TO SHAREHOLDERS

Gregg Kantor, 
President and CEO

We were one of the nation’s first utilities to replace all of our cast iron pipes, and will be one of the first to replace all bare steel pipes.

In 2013, NW Natural delivered earnings of $2.24 per share, achieved a number of important  
operating milestones and worked to bring its customers the many economic and environmental 
opportunities that natural gas offers.

The Pacific Northwest is known for its ability to foster 

economic progress in ways that support a vibrant, 

healthy environment. And it’s that intersection of en-

vironmental stewardship and the drive for economic 

growth that provide new and exciting opportunities 

for natural gas and NW Natural. 

No other energy option today can match the advantages 

that clean, affordable natural gas provides for homes, 

businesses, vehicle transportation or the power genera-

tion sector. But to capitalize on these opportunities  

NW Natural must continue to execute effectively, 

maintaining our focus on providing safe, reliable and 

affordable service.

2013 HIGHLIGHTS

(cid:116)  Reported net income of $61 million or $2.24 per share, 
compared to $59 million or $2.18 per share in 2012.

(cid:116)  Posted the highest score in the nation among large 
utilities in the J.D. Power and Associates’ Gas Utility 

Residential Customer Satisfaction Study.

(cid:116)  Invested $54 million in long-term gas reserves, bringing 
our cumulative three-year investment to $161 million.

(cid:116)  Grew utility revenues by adding customers and invest-

ments driven by a strong price advantage for natural gas 

To that end, last year we made significant investments  

and industry-leading online tools.

in our system. We completed several major system 

reinforcement projects and continued our proactive 

pipe replacement efforts. With the support of regula-

tors and customer advocates, we were one of the first 

(cid:116)  Received Public Utility Commission of Oregon (OPUC) 

approval to earn on $40 million of working gas inventory 

in rate base, effective Nov. 1, 2013.

utilities in the country to have replaced all cast iron in 

(cid:116)  Increased common stock dividends paid for the 58th 

our system, and we will soon complete the removal 

consecutive year, one of the longest dividend increase 

of all bare steel pipe as well. Currently, we have about 

records of any company on the NYSE.

10 miles of bare steel pipe left, and we expect to 

eliminate it by the end of 2015.

But system safety doesn’t end with pipe replacement. 

We also advanced many of our other safety initia-

4
LETTER TO SHAREHOLDERS

tives, including the completion 

of our new training center in 

Sherwood, Oregon. Last year, 

hundreds of company field em-

ployees and several municipal 

fire departments participated 

in hands-on, scenario-based 

safety training at our new facil-

ity. And we hosted a number 

of emergency preparedness 

events for families and organiza-

tions in local venues throughout 

our service territory.

Ensuring the safety of our 

system is job one, but providing 

excellent customer service is 

a close second. We are proud 

to say that our commitment to 

BARE STEEL AND CAST IRON REPLACEMENT

materialized in two impor-

1,250

1,000

L
E
E
T
S
E
R
A
B
F
O
S
E
L
M

I

750

500

250

0

1986

1991

1996

2001

2006

2013

BARE STEEL

CAST IRON

250

200

150

100

50

0

N
O
R

I

T
S
A
C
F
O
S
E
L
M

I

The company has only about 10 miles of bare steel main left in its system. 
All cast iron pipe was removed by 2000.

tant ways. 

The Portland metropolitan 

area’s unemployment rate 

dropped to a five-year low 

of 6.6 percent, with the 

labor market expanding 

by 1.6 percent over 12 

months. That positive mo-

mentum was also reflected 

in the housing sector 

numbers. By December, 

home sales were up 14 

percent and average home 

prices rose 13 percent. And 

with more movement of 

existing housing stock, new 

construction activity also 

safety and service continues to be recognized by 

rebounded. Housing permits in 2013 were up 46 percent compared to 2012. 

our customers. 

These gains helped drive an uptick in our customer growth rate to 1.3 percent 

For the third time in six years, NW Natural ranked 

in 2013.

first in the West among large utilities, and posted 

the highest score in the nation in J.D. Power and 

Associates’ Gas Utility Residential Customer Satis-

faction Study. We’ve worked hard to be an organi-

zation focused on continuous improvement, and 

these consistently strong results are a testament to 

To better position us for the housing recovery, NW Natural has developed new 

tools to more aggressively compete in the residential housing market. With the 

price of natural gas as much as 60 percent less expensive than oil and elec-

tricity in our high-growth areas, we plan to leverage this advantage by ensuring 

gas service is convenient and easy to access.

that work and to our talented workforce.

Last year, we launched the new Customer Connection Portal that provides a 

(cid:58)(cid:83)(cid:86)(cid:94)(cid:3)(cid:73)(cid:92)(cid:91)(cid:3)(cid:90)(cid:91)(cid:76)(cid:72)(cid:75)(cid:96)(cid:3)(cid:89)(cid:76)(cid:74)(cid:86)(cid:93)(cid:76)(cid:89)(cid:96)

In recent years, we’ve seen slow but consistent 

progress toward economic recovery in our service 

territory. In 2013, improvement in the local economy 

unique online resource for potential customers. This web-based portal auto-

mates and enhances a prospective customer’s shopping experience. 

Now, potential customers can go online from a computer, smartphone or  

tablet to learn within a few clicks if they can get natural gas to their home.  

As part of our commitment to safety, we built a new center that provides hands-on, scenario-based training for employees. The site also allows us to 
partner with first responders, including local fire departments, to conduct emergency preparedness exercises.

 
 
 
 
 
 
5
LETTER TO SHAREHOLDERS

Last year we implemented the Customer Connection Portal, allowing consumers to check for gas availability and schedule a contractor, all from the 
convenience of a smartphone, computer or tablet.

NW Natural will analyze these inquiries to see where demand for gas service goes 

Last fall, we received OPUC approval to add $40 

beyond our existing system, so we can more effectively plan for future growth.

million of working gas inventory to rate base, clos-

Using the portal, consumers can also find everything they need to connect to 

gas: special offers on equipment, contractor information and a tool to compare 

the cost of natural gas to oil and electricity.

In 2014, we will be expanding the portal to provide special features for our 

trade allies. Through a secure, personalized account, builders and HVAC con-

tractors will be able to go online to order service, track the progress of their 

orders and manage multiple projects.

A full regulatory agenda

Last year, we continued to work through a number of regulatory dockets stem-

ing that docket. The associated costs were placed 

into rates on Nov. 1.

We also announced an all-parties settlement that 

addressed several implementation issues related to 

our new environmental cost recovery mechanism. 

In reviewing the settlement, the Commission voiced 

support for certain aspects of it, but also expressed 

a desire to reassess how an earnings test would be 

applied. As a result, we will be working through the 

remainder of that proceeding this year. 

ming from our recent rate case. Specifically, the OPUC opened proceedings: to 

Through a separate stipulation, the OPUC did 

resolve implementation issues related to our new environmental cost recovery 

rule on one aspect of the environmental docket, 

mechanism; to determine whether working gas inventory balances should be 

allowing $19 million of capital costs related to the 

added to rate base; to review the current revenue-sharing agreement for inter-

construction of a water treatment plant associated 

state storage and optimization services; and to determine whether prepaid  

with our cleanup efforts to be placed into rates  

pension assets should be added to rate base.

on Nov. 1. 

UTILITY CUSTOMERS AT YEAR-END

OREGON & WASHINGTON RESIDENTIAL RATES
(in dollars per therm)

720,000

700,000

680,000

660,000

640,000

620,000

600,000

580,000

560,000

540,000

2009

2010

2011

2012

2013

$1.60

$1.40

$1.20

$1.00

$0.80

$0.60

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

INDUSTRIAL

COMMERCIAL

RESIDENTIAL

OREGON RESIDENTIAL RATES

WASHINGTON RESIDENTIAL RATES

We added 8,932 new customers in 2013, and now serve 694,873 
customers.

Today’s residential rates are lower than they were 10 years ago.

6
LETTER TO SHAREHOLDERS

Abundant, domestic natural gas is providing new economic 
and environmental opportunities, benefitting homes and 
businesses nationwide.

On a related matter, we made significant progress on  

a lawsuit the company filed in 2010 against several 

insurance carriers to recover on claims for the envi-

ronmental cleanup effort. By the end of last year, we 

reached settlements or agreements-in-principle with all 

but three of the insurers in the litigation. This January 

In 2014, we will continue to work through the remaining regulatory proceed-

ings carried over from our 2012 rate case. We expect these issues to be 

resolved this year.

New avenues for growth

Without question, abundant, domestic supplies of natural gas have created  

an environment rich with possibilities.

Last year, we continued to reap the long-term advantages of low natural gas 

prices through our gas reserves investment in Wyoming. Through year-end, 

our cumulative investment totaled $161 million. These investments are ex-

pected to provide stable prices for a portion of our utility gas supply for  

years to come. 

Today, like never before, low natural gas prices make it possible to reduce  

environmental emissions while decreasing our country’s dependence on 

foreign oil. For example, by switching to compressed natural gas (CNG), fleet 

operators can cut their fuel costs nearly in half while significantly reducing 

greenhouse gas emissions.

Given these cost and environmental benefits, it’s no surprise that many com-

petitively minded Northwest businesses have been looking for a way to move 

their vehicles to CNG. Unfortunately, there is little refueling infrastructure  

currently available in the Pacific Northwest that would allow them to make  

the switch. 

we concluded the litigation effort with signed settle-

In response, NW Natural proposed a new tariff to provide high-pressure 

ments from those remaining insurers. 

natural gas service to business customers interested in switching their fleet 

We are pleased with this outcome. Including all 

settlements to date, we now have recovered  

$150 million for investigation and remediation of 

vehicles to CNG. The tariff was approved by the OPUC in January of this year. 

We believe it provides an important first step in allowing local businesses to 

save on fuel costs and transition to a cleaner, domestic energy resource.

environmental sites, while avoiding the significant 

Generating power with natural gas is another opportunity to further the North-

costs associated with trials and the potential for 

west’s greenhouse gas reduction goals. By 2025, the two coal plants operating 

years of appeals.

in the Northwest are scheduled to be shut down. These significant moves 

NW Natural is working to meet the demand for CNG refueling infrastructure. A new tariff allows us to provide high-pressure natural gas service, which will help 
businesses save fuel costs and transition to a cleaner, domestic fuel.

7
LETTER TO SHAREHOLDERS

We believe storage will play an important role in serving demand growth as the nation turns increasingly to natural gas for power generation, transpor-
tation and manufacturing. 

away from coal will drive the region’s electric generation mix to even more 

new, proactive way for NW Natural to invest in proj-

renewables and a much greater reliance on natural gas. 

ects that have quantifiable environmental benefits for 

Supporting that generation shift is a possible expansion at NW Natural’s Mist 

underground storage facility. The concept is to use new storage capacity at 

customers – projects that otherwise would not  

move forward.

Mist to provide a flexible, on-demand fuel source for a local electric utility’s 

The bill took effect Jan. 1, 2014, and a rule-making 

gas-fired generating plants – plants designed to integrate wind resources into 

effort with the OPUC to establish project and invest-

the electric system.

Last year, we worked through many of the engineering details for this potential 

expansion, which would include new storage wells, a compressor station, and 

additional pipeline facilities. In 2014, we’ll be working to refine cost estimates 

and determine whether the expansion will move forward.

While the Northwest storage situation continues to offer near-term potential, 

storage values in many other parts of the country remained low in 2013. Despite 

these conditions, we continue to work hard to find opportunities that add 

value to our Gill Ranch facility in California.  

ment criteria is under way. We are pleased to have 

this framework in place, and we look forward to 

finding those untapped opportunities where natural 

gas can provide significant environmental benefits 

for Oregon.

The shale gas revolution is clearly a transforma-

tional change for our country, one that offers great 

economic and environmental opportunities. Now 

it’s our job to make sure NW Natural is positioned 

to thrive in this new environment, and to deliver 

California’s renewable portfolio standard requires that 33 percent of the state’s 

those opportunities to our customers and the com-

power be generated by renewables by 2020. This change in California’s gen-

munities we serve, as well as to our shareholders. 

eration mix is increasing the need for flexible power resources to handle the 

That remains our focus in 2014 – and beyond. 

intermittency of wind and solar energy. Our Gill Ranch facility has the potential 

to support this type of flexible resource.

Once again, thank you for the confidence and trust 

you place in NW Natural. We look forward to con-

Overall, we continue to believe that as the nation moves increasingly to natural 

tinuing to work on your behalf.

gas for power generation, transportation and industrial processes, storage will 

provide long-term value. And whether it’s through storage, in vehicles or at the 

burner tip, the environmental and economic advantages natural gas provides 

has caught the interest of policymakers.

Last year, Oregon’s Governor and one of the state’s Public Utility Commis-

sioners led the effort to get Senate Bill 844 passed. We believe this innovative 

legislation (known as the greenhouse gas emission reduction bill) provides a 

Gregg S. Kantor

President and CEO

8
CORPORATE OFFICERS

Front
MARGARET D. KIRKPATRICK
Senior Vice President and 
General Counsel

Back
GRANT M. YOSHIHARA
Vice President  
Utility Operations

DAVID H. ANDERSON
Executive Vice President 
and Chief Operating Officer

GREGG S. KANTOR
President and Chief 
Executive Officer

LEA ANNE DOOLITTLE
Senior Vice President and 
Chief Administrative Officer

STEPHEN P. FELTZ
Senior Vice President and 
Chief Financial Officer

MARDILYN SAATHOFF
Vice President Legal, 
Risk and Compliance  
and Corporate  
Secretary

C. ALEX MILLER
Vice President 
Regulation and 
Treasurer

DAVID R. WILLIAMS
Vice President
Utility Services

J. KEITH WHITE
Vice President Business 
Development and  
Energy Supply and 
Chief Strategic Officer

BRODY J. WILSON
Controller and 
Chief Accounting 
Officer

BOARD OF DIRECTORS

TIMOTHY P. BOYLE
President and Chief 
Executive Officer
Columbia Sportswear 
Company

MARTHA L.  
“STORMY” BYORUM
Director, Tecnoglass, Inc.

JOHN D. CARTER
Chairman  
of the Board 
Schnitzer Steel  
Industries, Inc.

MARK S. DODSON
Former Chief  
Executive Officer 
NW Natural

C. SCOTT GIBSON
President 
Gibson Enterprises

TOD R. HAMACHEK
Chairman of the Board
NW Natural

GREGG S. KANTOR
President and Chief 
Executive Officer 
NW Natural

JANE L. PEVERETT
Former President and 
Chief Executive Officer 
British Columbia Trans-
mission Corporation

KENNETH THRASHER
Chairman  
of the Board 
Compli Corporation

9
SHAREHOLDER INFORMATION

Notice of annual meeting

The 2014 Annual Meeting will be held at 2 p.m., Thursday, May 22, at the company’s headquarters, One Pacific Square, 220 NW 2nd Ave., 

4th floor, Portland, Oregon 97209. A meeting notice and proxy statement will be sent to all shareholders in April. If you plan to attend the 

annual meeting, you will need to detach and retain the admission ticket attached to your proxy card mailed to you with the notice of the 

annual meeting and the proxy statement. As space is limited, you may bring only one guest to the meeting. If you hold your stock through 

a broker, bank, or other nominee, please bring evidence to the meeting showing that you owned NW Natural Common Stock as of the 

record date, April 3, 2014, and we will provide you with an admission ticket. A form of government-issued photograph identification will 

be required for both you and your guest to enter the meeting.

Contact the NW Natural Board

the Corporate Secretary at NW Natural’s 

Dividend reinvestment and  
direct stock purchase plan 

Concerns may be directed to the non-

Participants may make an initial invest-

management directors by writing to  

ment in company stock and common 

NW Natural Board of Directors,  

shareholders of record may reinvest all or 

c/o Corporate Secretary.  

part of their dividends in additional shares 

under the company’s plan. Cash pur-

Forward-looking statements

address: Annual Report; Form 10-K; Form 

10-Q; Corporate Governance Standards; 

Director Independence Standards; Code 

of Ethics; and Board Committee Charters. 

These publications, as well as other filings 

made with the SEC, are also available on 

our website at nwnatural.com. Our SEC fil-

ings are also available by request through 

the SEC by mail at U.S. Securities and 

Exchange Commission, Office of FOIA/PA 

Operations, 100 F Street, N.E., Wash-

ington, D.C. 20549, or online at sec.gov. 

You can obtain information about access 

to the Public Reference Room and how 

to access or request records by calling 

the SEC at (202) 551-8090.

COMPARISON OF FIVE-YEAR  
CUMULATIVE TOTAL RETURN
(Based on $100 invested on 12/31/2008)

$250

$200

$150

$100

$50

$0

2008

2009

2010

2011

2012

2013

S&P 500 INDEX

S&P UTILITIES INDEX

NWN

chases may also be made. Participants in 

the plan bear the cost of brokerage fees 

and commissions for shares purchased 

on the open market to fulfill purchases 

under the plan. A prospectus will be sent 

upon request. 

Scheduled dividend payment dates 

February 14, 2014

May 15, 2014

August 15, 2014

November 14, 2014

Certifications 

The Chief Executive Officer certified to 

the NYSE on June 24, 2013, that, as of 

that date, he was not aware of any viola-

tion by the company of NYSE’s corporate 

governance listing standards, and the 

company had filed with the Securities and 

Exchange Commission (SEC), as exhibits 

31.1 and 31.2 to its Annual Report on  

Form 10-K for the year ended December 31,  

2012, the certificates of the Chief Execu-

tive Officer and the Chief Financial Officer 

of the company certifying the quality of 

the company’s public disclosure. For 

the year ended December 31, 2013, the 

certificates of the Chief Executive Officer 

and Chief Financial Officer are attached 

as exhibits 31.1 and 31.2 to the Form  

10-K included in this Annual Report.

The statements made in this Annual 

Report that are not purely historical, 

including statements regarding strategy, 

growth, future demand for gas, com-

modity costs, fuel savings, revenues, gas 

supplies and reserves, investments and 

returns, business development, potential 

projects and project timelines, pipeline 

replacement and safety programs, system 

reliability, storage performance values, 

recovery and expansion, governmental 

policy and legislation, regulatory cost 

recovery mechanisms, regulatory prudence 

reviews, regulatory proceedings and ac-

tions, economic recovery factors, market 

trends and the competitive environment are 

forward-looking statements within the “safe 

harbor” provisions of the Private Securities 

Litigation Reform Act of 1995. NW Natural’s 

actual results could differ materially from 

those anticipated in these forward-looking 

statements as a result of risks and uncer-

tainties, including those described in the 

attached report on Form 10-K.

For a more complete description of these 

risks and uncertainties, please refer to 

our filings with the SEC on Forms 10-K 

and 10-Q.

Request for publications

The following publications may be 

obtained without charge by contacting 

Total shareholder return (annualized) over the five  
years ending December 31, 2013, for NW Natural  
was 3.2%, compared to Standard & Poor’s (S&P) 
Utilities Index return of 10.2%, and the S&P 500 
Index return of 17.9%.

10
LIVING OUR MISSION & VALUES

We provide safe, reliable and  
affordable energy in an environmentally 
responsible way to better the lives of 
the public we serve.

Integrity
Safety
Service Ethic
Caring
Environmental Stewardship

Produced by NW Natural’s Corporate Communications
PHOTO CREDITS

Page 3 - Gregg Kantor: Todd Eckelman.

Page 4 - Get Ready Safety: Corky Miller; Sherwood Training Facility: Courtesy Judd Girard.

Page 6 - CNG Refilling Station: Corky Miller.

Page 7 - Gas Pipeline Installation: Robbie McClaran.

Page 8 - Corporate Officers: Jeff Lee; Board of Directors: Robbie McClaran.

Page 11 - Robert Hess and Chu Lee: Robbie McClaran; NW Natural Headquarters: Corky Miller.

PRINTING

RR Donnelley

Form 10-K
Annual Report

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K

(Mark One)
[X]       ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2013
OR

[  ]       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ___________ to____________
Commission file number 1-15973

NORTHWEST NATURAL GAS COMPANY
(Exact name of registrant as specified in its charter) 

 Oregon 

(State or other jurisdiction of    

incorporation or organization)  

93-0256722

(I.R.S. Employer

Identification No.)

220 N.W. Second Avenue, Portland, Oregon 97209
(Address of principal executive offices)  (Zip Code)
Registrant’s telephone number, including area code:  (503) 226-4211

Securities registered pursuant to Section 12(b) of the Act:
Title of each class                                                                                   Name of each exchange on which registered
Common Stock                                                                                       New York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act:  None.

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

Yes  [ X ]    No  [    ]

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

Yes  [   ]    No  [ X ]

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the 
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to 
file such reports), and (2) has been subject to such filing requirements for the past 90 days. 
Yes  [ X ]    No  [    ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every 

Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) 
during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). 
Yes [ X ]     No  [   ]

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

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

Large Accelerated Filer [ X ]                                                                      Accelerated Filer [    ]
Non-accelerated Filer [    ]                                                                         Smaller Reporting Company [    ]
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes  [   ]    No  [ X ]

As of June 28, 2013, the registrant had 26,972,022 shares of its Common Stock outstanding, of which 26,636,200 shares 
were held by non-affiliates. The aggregate market value of the shares of Common Stock (based upon the closing price of these 
shares on the New York Stock Exchange on that date) held by non-affiliates was $1,131,505,776.

At February 21, 2014, 27,099,729 shares of the registrant’s Common Stock (the only class of Common Stock) were 

outstanding.

Portions of the Proxy Statement of the registrant, to be filed in connection with the 2014 Annual Meeting of Shareholders, are 
incorporated by reference in Part III.

DOCUMENTS INCORPORATED BY REFERENCE

NORTHWEST NATURAL GAS COMPANY
Annual Report to Securities and Exchange Commission on Form 10-K
For the Fiscal Year Ended December 31, 2013

TABLE OF CONTENTS

PART I

Glossary of Terms

Forward-Looking Statements

Item 1.

Business

Overview

Local Gas Distribution

Gas Storage

Other

Environmental Issues

Employees

Additions to Infrastructure

Executive Officers of the Registrant

Available Information

Item 1A. Risk Factors

Item 1B. Unresolved Staff Comments

Properties

Legal Proceedings

Mine Safety Disclosures

Item 2.

Item 3.

Item 4.

PART II

Item 5.

Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer

Item 6.

Item 7.

Purchases of Equity Securities

Selected Financial Data

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Item 8.
Item 9.

Financial Statements and Supplementary Data

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

Item 9A. Controls and Procedures

Item 9B. Other Information

PART III

Item 10. Directors, Executive Officers and Corporate Governance

Item 11. Executive Compensation
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

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

Item 14. Principal Accountant Fees and Services

PART IV  

Item 15. Exhibits and Financial Statement Schedules

SIGNATURES

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GLOSSARY OF TERMS

AVERAGE WEATHER: equal to the 25-year average degree 
days based on temperatures established in our last Oregon 
general rate case.

Bcf: one billion cubic feet, a volumetric measure of natural 
gas, roughly equal to 10 million therms.

Btu: British thermal unit, a basic unit of thermal energy 
measurement. One Btu equals the energy required to raise 
one pound of water one degree Fahrenheit at an 
atmospheric pressure of one and 60 degrees Fahrenheit. 
One hundred thousand Btu’s equal one therm.

CALIFORNIA PUBLIC UTILITIES COMMISSION (CPUC): entity 
that regulates our California gas storage business at our Gill 
Ranch facility with respect to rates and terms of service, 
among other matters.

CORE UTILITY CUSTOMERS: residential, commercial and 
industrial customers receiving firm service from the utility.

COST OF GAS: the delivered cost of natural gas sold to 
customers, including the cost of gas purchased or 
withdrawn/produced from storage inventory or reserves, 
gains and losses from gas commodity hedges, pipeline 
demand costs, seasonal demand cost balancing 
adjustments, regulatory gas cost deferrals and company 
gas use.

DECOUPLING: a rate mechanism, also referred to as our 
conservation tariff, which is designed to break the link 
between earnings and the quantity of natural gas consumed 
by customers. The design is intended to allow the utility to 
encourage customers to conserve energy while not 
adversely affecting its earnings due to reductions in sales 
volumes.

HEATING DEGREE DAYS: units of measure that reflect 
temperature-sensitive consumption of natural gas, 
calculated by subtracting the average of a day’s high and 
low temperatures from 65 degrees Fahrenheit.

DEMAND COST: a component in core utility customer rates 
that covers the cost of securing firm pipeline capacity, 
whether that capacity is used or not.

FEDERAL ENERGY REGULATORY COMMISSION (FERC): 
entity that regulates interstate storage services offered by 
our Mist gas storage facility as part of our gas storage 
segment. 

FIRM SERVICE: natural gas service offered to customers 
under contracts or rate schedules that will not be disrupted 
to meet the needs of other customers. 

GENERAL RATE CASE: a periodic filing with state or federal 
regulators to establish billing rates for all classes of utility 
customers.

INTERRUPTIBLE SERVICE: natural gas service offered to 
customers (usually large commercial or industrial users) 
under contracts or rate schedules that allow for interruptions 

when necessary to meet the needs of firm service 
customers.

LIQUEFIED NATURAL GAS (LNG): the cryogenic liquid form of 
natural gas. To reach a liquid form at atmospheric pressure, 
natural gas must be cooled to approximately negative 260 
degrees Fahrenheit.

PUBLIC UTILITY COMMISSION OF OREGON (OPUC): entity 
that regulates our Oregon utility business with respect to 
rates and terms of service, among other matters. The 
OPUC also regulates our Mist gas storage facility's 
intrastate storage services.

PURCHASED GAS ADJUSTMENT (PGA): a regulatory 
mechanism which adjusts customer rates to reflect changes 
in the forecasted cost of gas and differences between 
forecasted and actual gas costs from the prior year.

RETURN ON EQUITY (ROE): a measure of corporate 
profitability, calculated as net income divided by average 
common stock equity. Authorized ROE refers to the equity 
rate approved by a regulatory agency for use in determining 
revenue requirements.

SALES SERVICE: service provided whereby a customer 
purchases both natural gas commodity supply and 
transportation from the utility.

SITE REMEDIATION AND RECOVERY MECHANISM (SRRM): an 
Oregon rate mechanism for recovering prudently incurred 
environmental site remediation costs through customer 
billings, subject to an earnings test. 

SYSTEM INTEGRITY PROGRAM (SIP): an Oregon rate 
mechanism that provides cost recovery of pipeline and 
system integrity programs, which are required under various 
safety standards prescribed by both state and federal 
regulators.

THERM: the basic unit of natural gas measurement, equal to 
one hundred thousand Btu’s.

TRANSPORTATION SERVICE: service provided whereby a 
customer purchases natural gas commodity directly from a 
supplier but pays the utility to transport the gas over its 
distribution system to the customer’s facility.

UTILITY MARGIN: a financial measure consisting of utility 
operating revenues less the associated cost of gas.

WASHINGTON UTILITIES AND TRANSPORTATION 
COMMISSION (WUTC): entity that regulates our Washington 
utility business with respect to rates and terms of service, 
among other matters.

WEATHER NORMALIZATION: an Oregon rate mechanism 
applied to residential and commercial customers’ bills to 
adjust for temperature variances from average weather, with 
rate decreases when the weather is colder than average 
and rate increases when the weather is warmer than 
average. The mechanism is applied to bills from December 
through May of each heating season.

1

FORWARD-LOOKING STATEMENTS 

This report contains forward-looking statements within the 
meaning of the U.S. Private Securities Litigation Reform Act 
of 1995. Forward-looking statements can be identified by 
words such as anticipates, intends, plans, seeks, believes, 
estimates, expects, and similar references to future periods. 
Examples of forward-looking statements include, but are not 
limited to statements regarding the following:
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

plans;
objectives;
goals;
strategies;
assumptions and estimates;
future events or performance;
trends;
timing and cyclicality;
earnings and dividends;
growth;
customer rates;
commodity costs;
gas reserves;
operational performance and costs;
efficacy of derivatives and hedges;
liquidity and financial positions;
project development and expansion;
competition;
procurement and development of gas supplies;
estimated expenditures;
costs of compliance;
credit exposures;
potential efficiencies;
rate recovery and refunds;
impacts of laws, rules and regulations;
tax liabilities or refunds;
levels and pricing of gas storage contracts;
outcomes and effects of potential claims, litigation, 
regulatory actions, and other administrative matters;
projected obligations under retirement plans;
availability, adequacy, and shift in mix, of gas supplies;
approval and adequacy of regulatory deferrals;
effects of regulatory mechanisms; and
environmental, regulatory, litigation and insurance costs 
and recoveries, and timing thereof.

• 
• 
• 
• 
• 

Forward-looking statements are based on our current 
expectations and assumptions regarding our business, the 
economy and other future conditions. Because forward-
looking statements relate to the future, they are subject to 
inherent uncertainties, risks and changes in circumstances 
that are difficult to predict. Our actual results may differ 
materially from those contemplated by the forward-looking 
statements. We therefore caution you against relying on any 
of these forward-looking statements. They are neither 
statements of historical fact nor guarantees or assurances 
of future performance. Important factors that could cause 
actual results to differ materially from those in the forward-
looking statements are discussed at Item 1A., "Risk 
Factors" of Part I and Item 7. and Item 7A., "Management’s 
Discussion and Analysis of Financial Condition and Results 
of Operations" and "Quantitative and Qualitative Disclosures 
About Market Risk", respectively, of Part II of this report.

Any forward-looking statement made by us in this report 
speaks only as of the date on which it is made. Factors or 
events that could cause our actual results to differ may 
emerge from time to time, and it is not possible for us to 
predict all of them. We undertake no obligation to publicly 
update any forward-looking statement, whether as a result 
of new information, future developments or otherwise, 
except as may be required by law.

2

 
NORTHWEST NATURAL GAS 
COMPANY
PART I

ITEM 1. BUSINESS

OVERVIEW

Northwest Natural Gas Company (NW Natural or the 
Company) was incorporated under the laws of Oregon in 
1910. However, our company and its predecessors have 
supplied gas service to the public since 1859, and we have 
been doing business as NW Natural since 1997. We 
maintain operations in Oregon, Washington and California 
and conduct business through NW Natural and its 
subsidiaries. References in this discussion to "Notes" are 
the Notes to the Consolidated Financial Statements in Item 
8 of this report.

We have two core businesses: our regulated local gas 
distribution business, referred to as the utility segment, 
which serves residential, commercial, and industrial 
customers in Oregon and southwest Washington; and our 
gas storage businesses, referred to as the gas storage 
segment, which provides storage services for utilities, gas 
marketers, electric generators, and large industrial users 
from storage facilities located in Oregon and California. In 
addition, we have investments and other non-utility activities 
that we aggregate and report as other. 

The utility business is our largest segment, while our gas 
storage businesses account for a majority of our remaining 
net income. The following table reflects the percentage 
allocation between segments and other as of December 31, 
2013:

Non-Utility(1)

Utility

Gas 
Storage(2)

Other

Total

Assets

89.0%

10.4%

0.6%

100.0%

9.2%

0.1%

90.7%

100.0%
Net Income
(1) We refer to our gas storage segment and other as non-utility as 
they are not included in our regulated gas distribution business; 
however, certain aspects of the gas storage segment and other 
may be regulated by the OPUC, WUTC, CPUC, or FERC. 
 (2) Gas Storage segment includes asset management services for 
both the utility and non-utility portion of our Mist gas storage facility. 

LOCAL GAS DISTRIBUTION "UTILITY"

The utility is principally engaged in the regulated distribution 
of natural gas in Oregon and southwest Washington to 
approximately 695,000 customers with around 90% of our 
customers located in Oregon and 10% located in 
Washington. In total, we provide natural gas service to over 
100 cities in 18 counties with an estimated population of 3.4 
million in our service territory.

The OPUC and WUTC have allocated us an exclusive 
service territory, which includes a major portion of western 
Oregon, including the Portland metropolitan area, most of 
the Willamette Valley, the Coastal area from Astoria to Coos 
Bay, and portions of Washington along the Columbia River. 

3

Portland serves as one of the largest international ports on 
the West Coast and is a key distribution center due to its 
comprehensive transportation system that comprises ocean 
and river shipping, transcontinental railways and highways, 
and an international airport. The area is a major retail and 
manufacturing center and home to high-technology 
industries. 

Customers
We serve residential, commercial and industrial customers 
with no individual customer or industry accounting for over 
10% of our utility revenues. On an annual basis, residential 
and commercial customers typically account for around 60% 
of our utility’s total volumes delivered and 90% of our utility’s 
margin. Industrial customers largely account for the 
remaining volumes and utility margin. A small amount of 
utility margin is also derived from other items. The following 
table presents summary customer information as of 
December 31, 2013:

Residential

Commercial

Industrial
Other(1)

Number of
Customers

% of
Volumes

% of Utility
Margin

628,634

65,321

918

N/A

36%

22%

42%

N/A

64%

27%

8%

1%

Total

694,873
(1) Other is derived from miscellaneous services, gains or losses 
from our incentive gas cost sharing mechanism and other service 
fees.

100%

100%

Generally residential and commercial customers purchase 
both their natural gas commodity (gas sales) and natural 
gas delivery services (transportation services) from the 
utility. Industrial customers also purchase transportation 
services from the utility, but may buy the gas commodity 
either from the utility or directly from a third-party gas 
marketer or supplier. Our gas commodity cost is primarily a 
pass-through cost to customers; therefore, our profit 
margins are not materially affected by an industrial 
customer's decision to purchase gas from us or from third 
parties. Industrial and large commercial customers may also 
select between firm and interruptible service levels, with firm 
services generally providing higher profit margins compared 
to interruptible services.

To help manage gas supplies, our industrial tariffs are 
designed to provide some certainty regarding industrial 
customers' volumes by requiring an annual election of 
services, special charges for changes between elections, 
and in some cases, meeting a minimum or maximum 
volume requirement before changing options. 

  
  
Customer growth rates for natural gas utilities in the Pacific 
Northwest are generally among the highest in the nation 
due to lower market saturation as natural gas became 
widely available as a residential heating source after other 
fuel options. We estimate that natural gas is in less than 
60% of residential single-family dwellings in our service 
territory. Therefore, growth in the region comes from both 
new housing construction and existing homes converting to 
natural gas. Prior to the most recent recession, our 
customer growth rate averaged around 3% or higher. From 
2009 to 2012, growth dipped below 1%, but in 2013, the  
12-month growth rate increased to 1.3%. With natural gas' 
continued price advantage, operating convenience, and 
environmental benefits, we believe there is potential for 
continued growth in all customer categories as the economy 
recovers. See Note 4 for information on the utility's assets 
and results of operations.

Competitive Conditions
In our service areas, we have no direct competition from 
other natural gas distributors, but we compete with other 
forms of energy supply in each customer class. This 
competition among energy suppliers is based on price, 
efficiency, reliability, performance, market conditions, 
technology, federal and state energy policy, and 
environmental impacts. 

For residential and small to mid-size commercial customers, 
we compete primarily with electricity, fuel oil, propane and 
renewable energy providers. 

In the industrial and large commercial markets, we compete 
with all forms of energy, including competition from 
wholesale natural gas marketers. In addition, large industrial 
customers could bypass our local gas distribution system by 
installing their own direct pipeline connection to the 
interstate pipeline system. We have designed custom 
transportation service agreements with several of our 
largest industrial customers to provide transportation service 
rates that are competitive with the customer’s costs of 
installing their own pipeline. These agreements generally 
prohibit bypass. Due to the cost pressures that confront a 
number of our largest customers that compete in global 
markets, bypass continues to be a competitive 
threat. Although we do not expect a significant number of 
our large customers to bypass our system in the 
foreseeable future, we could experience deterioration of 
margin if customers bypass or switch over to custom 
contracts that provide lower profit margins.

Seasonality of Business
Our utility business is seasonal in nature due to higher gas 
usage by residential and commercial customers during the 
cold winter heating months.

Regulation and Rates
The utility is subject to regulation by the OPUC, WUTC, and 
FERC. These regulatory agencies authorize rates and allow 
recovery mechanisms to provide our utility the opportunity to 
recover prudently incurred capital and operating costs from 
customers, while also earning a reasonable return on 
investment for investors. In addition, the OPUC and WUTC 
also regulate the system of accounts and issuance of 
securities by our utility.

4

We file general rate cases and rate tariff requests 
periodically with the commissions to establish approved 
rates, an authorized ROE, an overall rate of return on rate 
base (ROR), an authorized utility capital structure, and other 
revenue/cost deferral and recovery mechanisms.

In addition, under our Mist interstate storage certificate with 
FERC, the utility is required to file either a petition for rate 
approval or a cost and revenue study every five years to 
change or justify maintaining the existing rates for the 
interstate storage service. In December 2013, we filed a 
rate petition and received approval in 2014 for new 
maximum cost-based rates effective January 1, 2014. 
The utility's most recent general rate case in Oregon was 
effective November 1, 2012, and the latest Washington rate 
case was effective January 1, 2009. Our current approved 
rates and recovery mechanisms for each service area 
include:

Authorized Rate Structure:

ROE

ROR

Oregon

Washington(1)

9.5%

7.8%

10.1%

8.4%

Debt/Equity Ratio

50%/50%

49%/51%

Key Regulatory Mechanisms:

PGA

Incentive Sharing

Weather Normalization Tariff

Decoupling

SIP

Pension Balancing

Environmental Cost Deferral

SRRM

X

X

X

X

X

X

X

X

X

X

(1)Although we do not have the same specific regulatory 
mechanisms in Washington, we do have approved regulatory 
deferral orders that allow us to defer certain costs for future 
recovery through the PGA or future general rate cases, such as our 
environmental cost deferral order. 

In general, these rates and regulatory mechanisms do not 
provide for the utility to earn a profit or incur a loss on our 
gas commodity purchases. This means gas commodity 
purchase costs are primarily a pass-through cost in 
customer rates, with the exception of our incentive cost 
sharing mechanism in Oregon. Under this mechanism, we 
can either increase or decrease margin revenues based on 
higher or lower actual gas purchase costs compared to gas 
purchase costs embedded in the PGA and our gas reserve 
investment. We can earn an authorized return on the 
equivalent rate base investment on our gas reserves.

For a complete discussion of regulatory matters, open 
dockets, current regulatory activities, and additional details 
on each rate mechanism, see Part II, Item 7, "Results of 
Operations—Regulatory Matters" and "Gas Storage" below.

Gas Supply
The utility strives to secure sufficient, reliable supplies of 
natural gas to meet the needs of customers at the lowest 
reasonable cost through a comprehensive strategy that is 
focused on the following items:
•  Diverse Supply - providing diversity of supply sources;
•  Diverse Contracts - maintaining a variety of contract 

durations and types; and 

•  Cost Management - employing gas cost management 

strategies. 

Diversity of Supply Sources 
We purchase our gas supplies primarily from the Alberta 
and British Columbia areas of Canada and multiple receipt 
points in the U.S. Rocky Mountains to protect against 
regional supply disruptions and to optimize price 
differentials. Currently, about 63% of our supply comes from 
Canada, with the balance coming primarily from the U.S. 
Rocky Mountain region. We believe that gas supplies 
available in the western United States and Canada are 
adequate to serve our core utility requirements for the 
foreseeable future. We continue to evaluate the long-term 
supply mix based on projections of gas production and 
pricing in the U.S. Rocky Mountain region as well as other 
regions in North America. We believe that the cost of natural 
gas coming from western Canada and the U.S. Rocky 
Mountain region will continue to track with broader U.S. 
market pricing. Additionally, we have seen increased 
availability of gas supplies throughout North America as a 
result of the extraction of shale gas and the building of new 
transmission pipelines to increase transportation capacity 
out of the U.S. Rocky Mountain region.

We supplement our firm gas supply purchases with gas 
withdrawals from gas storage facilities, including 
underground reservoirs, and LNG storage facilities. These 
storage facilities are generally injected with natural gas 
during off-peak months during the spring and summer and 
are withdrawn for use during peak demand months in the 
winter. 

The following table presents the storage facilities available 
for our utility supply:

Maximum 
Daily 
Deliverability 
(therms in 
millions)

Capacity 
(Bcf)

Gas Storage Facilities:

Owned Facility:
Mist, Oregon(1)

Contracted Facilities:

Jackson Prairie, Washington(2)
Alberta, Canada(3)

LNG Facilities:

Owned Facilities:

Newport, Oregon

Portland, Oregon

Contracted Facility:

Plymouth, Washington(4)

Total

2.7

0.5

0.5

0.6

1.2

0.6

6.1

10.0

1.1

2.8

0.9

0.6

0.5

15.9

t1) The Mist gas storage facility has a total maximum daily 
deliverability of 5.2 million therms and a total working gas capacity 
of about 16 Bcf, of which 2.7 million therms of daily deliverability 
and 10 Bcf of storage capacity are reserved for core utility 
customers. 
(2) The storage facility is located near Chehalis, Washington and is 
contracted from Northwest Pipeline, a subsidiary of The Williams 
Companies. 
(3) This resource does not add to our total peak day capacity, but 
does help to manage price risks as it displaces equivalent volumes 
of spot purchases. 
(4) On certain days in December 2013, pipeline transportation 
service from the Plymouth facility was curtailed. As a result, we no 
longer assume that the resource will contribute to total peak day 
capacity beginning with the 2014-2015 heating season. We are 
currently evaluating this resource and alternative options, but will 
continue to utilize the facility to manage price risks in the coming 
year.

The Mist facility is used for both utility and non-utility 
purposes. Under our regulatory agreement with the OPUC, 
non-utility gas storage at Mist can be developed in advance 
of core utility customer needs, but is subject to recall by the 
utility when needed to serve utility customers as their 
demand increases. 

In addition, we have the ability to recall pipeline capacity 
and supply resources from certain customers if needed.

Diverse Contract Durations and Types
We have a diverse portfolio of short-, medium-, and long-
term firm gas supply contracts and a variety of contract 
types including firm and interruptible supplies plus 
supplemental supplies from gas storage facilities. 

Our portfolio of firm gas supply contracts typically includes 
the following gas purchase contracts: year-round and 
winter-only baseload supplies; seasonal supply with an 
option to call on additional daily supplies during the winter 
heating season; and daily or monthly spot purchases.

5

 
During 2013, we purchased a total of 762 million therms 
under contracts with durations outlined in the chart below:

Contract Duration (primary term)

Long-term (one year or longer)

Short-term (more than one month, less than one
year)

Spot (one month or less)

Total

Percent of
Purchases

28%

24

48

100%

We renew or replace gas supply contracts as they expire. 
Aside from the gas supplies provided by an independent 
energy marketing company as part of asset management 
services, our largest individual supplier provided just over 
10% of our gas supply requirements in 2013. 

Gas Cost Management Strategy 
The cost of gas sold to utility customers primarily consists of 
the following items, which are included in annual PGA rates: 
purchase price paid to suppliers; charges paid to pipeline 
companies to store and transport gas to our distribution 
system; our gas reserves contract; and gains or losses 
related to gas commodity derivative contracts.

We employ a number of strategies to mitigate the cost of 
gas sold to utility customers. Our primary strategies for 
managing gas commodity price risk include:
• 
• 

negotiating fixed prices directly with gas suppliers;
negotiating financial derivative contracts that effectively 
(1) convert floating index prices in physical gas supply 
contracts to fixed prices (referred to as commodity price 
swaps) or (2) effectively set a ceiling or floor price, or 
both, on floating index priced physical supply contracts 
(referred to as commodity price options such as calls, 
puts, and collars) See Part II, Item 7A, "Quantitative 
and Qualitative Disclosures About Market Risk—Credit 
Risk—Credit Exposure to Financial Derivative 
Counterparties";
buying physical gas supplies at a set price and injecting 
it into storage for price stability and to minimize pipeline 
capacity demand costs;
investing in gas reserves for longer term price stability 
with Encana Oil & Gas (USA) Inc. (Encana). See Note 
11; and
using an asset management service provider to 
produce incremental revenues that are used to reduce 
our utility’s net cost of gas.

• 

• 

• 

We contract with an independent energy marketing 
company to capture opportunities regarding our unused 
storage and pipeline capacity when those assets are not 
serving the needs of our core utility customers. Our asset 
management activities provide cost savings that reduce our 
utility customer's cost of gas and an opportunity to generate 
incremental revenues for NW Natural's shareholders from a 
regulatory incentive-sharing mechanism, which are included 
in our gas storage segment.

Transportation of Gas Supplies
Our local gas distribution system is reliant on a single, bi-
directional interstate transmission pipeline to bring gas 
supplies into our distribution system. Although we are 
dependent on a single pipeline, the pipeline’s gas flows into 
the Portland metropolitan market from two directions: (1) the 
north, which brings supplies from the British Columbia and 
Alberta supply basins; and (2) the east, which brings 
supplies from Alberta as well as the U.S. Rocky Mountain 
supply basins. 

In 2003, a federal order requiring Northwest Pipeline to 
replace its 26-inch mainline from the Canadian border to our 
service territory underscored the potential need for pipeline 
transportation diversity. That replacement project was 
completed by Northwest Pipeline in November 2006. We 
are pursuing options to further diversify the pipeline 
transportation system into our service territory. Specifically, 
we are jointly developing plans to build a pipeline that would 
connect TransCanada Pipelines Limited’s (TransCanada) 
Gas Transmission Northwest (GTN) interstate transmission 
line to our local gas distribution system. If constructed, this 
pipeline would provide another transportation path for gas 
purchases from Alberta and the U.S. Rocky Mountains in 
addition to the one that currently moves gas through the 
Northwest Pipeline system. See Part II, Item 7, "2014 
Outlook".

We incur monthly demand charges related to our firm 
pipeline transportation contracts. Our largest pipeline 
agreements are with Northwest Pipeline for firm 
transportation capacity, which provides access to supplies in 
British Columbia and the U.S. Rocky Mountains by 
connecting us with the Northwest Pipeline and GTN 
systems. These contracts are multi-year contracts with 
expirations ranging from 2014 to 2044. We actively work 
with Northwest Pipeline and others to renew contracts in 
advance of expiration and ensure gas transportation 
capacity is sufficient to meet our needs. 

Rates for interstate pipeline transportation services are 
established by FERC within the U.S. and by Canadian 
authorities for services on Canadian pipelines.

Gas Distribution
The goals of our gas distribution operations are:
•  Safety - Building and maintaining a safe pipeline 

distribution system;

• 

•  Reliability - Ensuring gas resource portfolios that are 
sufficient to satisfy customer requirements under 
extremely cold weather conditions; and
Lowest Reasonable Cost - Acquiring gas supplies at 
the lowest reasonable cost for utility customers;
Price Stability - Managing commodity price volatility by 
making the best use of physical assets and financial 
instruments; and

• 

•  Cost Recovery - Managing gas purchase costs to 
minimize risks associated with regulatory prudence 
reviews and cost recovery.

These goals are discussed more fully in the following 
sections.

6

Safety 
Safety and the protection of our employees, our customers 
and the public at large are and will remain a top priority. We 
monitor and maintain our pipeline distribution system and 
storage operations with the goal of ensuring that natural gas 
is stored and delivered safely, reliably and efficiently. We 
have had various cost recovery mechanisms since 2004 
and currently have a program that integrates the 
Company’s programs for bare steel replacement, 
transmission pipeline integrity management, and distribution 
pipeline integrity management into a single program. See 
Part II, Item 7, "Results of Operations—Regulatory Matters
—System Integrity Program". 

Natural gas distribution businesses are likely to be subject 
to even greater federal and state regulation in the future due 
to recent pipeline incidents involving other companies. Most 
recently, additional regulations from the U.S. Department of 
Transportation’s Pipeline and Hazardous Materials Safety 
Administration (PHMSA) were drafted in 2013 with final 
regulations expected in 2015 and an effective date in 
2016. We will continue to work diligently with industry 
associations as well as federal and state regulators to 
ensure the safety of our system and compliance with new 
laws and regulations. We expect that costs associated with 
compliance to federal, state, and local rules would be 
recoverable in rates.

Reliability
The effectiveness of our gas distribution system ultimately 
rests on whether we provide reliable service to our core 
utility customers. To ensure our effectiveness, we develop a 
composite design year, including a three day design peak 
event that is based on the most severe cold weather 
experienced during the last 25 years in our service territory. 

Our projected maximum design day firm utility customer 
sendout totals approximately 9.3 million therms. Of this 
total, we are currently capable of meeting over 50% of our 
maximum design day requirements with gas from storage 
located within or adjacent to our service territory, while the 
remaining supply requirements would be met by gas 
purchases under firm and recall gas purchase contracts. 

On February 6, 2014, we experienced our current record 
customer sendout of 9.0 million therms, which included 7.4 
million firm therms. This record day was approximately 9 
degrees Fahrenheit warmer than the design day 
temperature. 

We believe that our gas supplies would be sufficient to meet 
existing firm customer demand if we were to experience 
maximum design day weather conditions. We will continue 
to evaluate and update our forecasted requirements and 
incorporate changes in our integrated resource plan (IRP) 
process.  

The following table shows the sources of supply that are 
projected to be used to satisfy the design day sendout for 
the 2013-2014 winter heating season:

 Therms in millions

Sources of utility supply:

Firm supply purchases

Mist underground storage (utility only)

Company-owned LNG storage

Off-system firm storage contract
Other off-system storage contract(1)

Recall agreements

Total

Therms

Percent

3.3

2.7

1.8

0.5

0.6

0.4

9.3

37%

29

19

5

6

4

100%

(1)  On certain days in December 2013, pipeline transportation 
service from the Plymouth storage facility was curtailed. We were 
able to use this service in February 2014 primarily through other 
transportation agreements. We are currently evaluating this 
resource and alternative options for the 2014-2015 heating season.

The OPUC and WUTC have IRP processes in which utilities 
define different growth scenarios and corresponding 
resource acquisition strategies in an effort to evaluate 
supply and demand resource requirements, consider 
uncertainties in the planning process and the need for 
flexibility to respond to changes, and establish a plan for 
providing reliable service at the least cost.

In general, the IRP is filed biannually with both the OPUC 
and the WUTC. An update is filed in Oregon in the off 
year. The OPUC acknowledges receipt of the IRP; whereas 
the WUTC provides notice that our IRP met the 
requirements of the Washington Administrative 
Code. Commission acknowledgment of the IRP does not 
constitute ratemaking approval of any specific resource 
acquisition strategy or expenditure. However, the OPUC 
generally indicates that it would give considerable weight in 
prudence reviews to utility actions that are consistent with 
acknowledged plans. The WUTC has indicated that the IRP 
process is one factor it will consider in a prudence 
review. We plan to file our 2014 IRP in both Oregon and 
Washington in May 2014. 

Lowest Reasonable Cost
We apply cost management strategies, including fixed-price 
contracts, financial derivative instruments, storage supplies, 
acquisition of gas reserves, and asset management, to 
acquire gas supplies at the lowest reasonable cost for utility 
customers. See "Gas Supply—Gas Cost Management 
Strategy" above.

Price Stability
We use physical assets and financial instruments to 
manage commodity price volatility. We purchase gas for our 
storage facility generally during the summer months when 
gas prices are typically lower. In addition, our gas reserves 
provide long-term gas price protection for our utility 
customers. We also mitigate year-to-year commodity price 
volatility through financial hedge contracts such as 
commodity price swaps and options. 

7

Cost Recovery
Mechanisms for gas cost recovery are designed to be fair 
and reasonable, with an appropriate balance between the 
interests of our customers and shareholders. In general, 
utility rates are designed to recover the costs, but not to 
earn a return on, the gas commodity sold. We minimize 
risks associated with gas cost recovery by resetting 
customer rates annually through the PGA and aligning 
customer and shareholder interests through the use of 
sharing, weather normalization, and conservation 
mechanisms in Oregon. See Part II, Item 7, "Results of 
Operations—Regulatory Matters—Rate Mechanisms" and 
"Results of Operations—Business Segments—Local Gas 
Distribution Utility Operations—Cost of Gas."

GAS STORAGE

The gas storage segment includes the following:
• 

the non-utility portion of the Mist gas storage facility 
near Mist, Oregon;
our 75% share of the Gill Ranch gas storage facility 
near Fresno, California; and
asset management services provided by an 
independent energy marketing company. 

• 

• 

In general, the supply of natural gas remains relatively 
stable over the course of a year, while the demand for 
natural gas typically fluctuates seasonally. Storage facilities 
allow customers to purchase and inject natural gas supplies 
during periods of low demand and withdraw these supplies 
for use or resale during periods of higher demand. These 
facilities allow us to capitalize on the imbalance of supply 
and demand and price volatility for natural gas. 

In recent years, as a result of the abundant supply of natural 
gas in North America, we have seen lower, more stable 
natural gas prices, which has created a challenging gas 
storage environment. In late 2013 and early 2014, we saw 
gas price volatility due to the colder than normal winter 
throughout North America. In the short-term, this gas price 
volatility increased the demand for, and value of, holding 
gas storage. However, future gas storage demand and 
pricing have been negatively affected by projections of 
spring and summer natural gas prices that are equal to 
projected gas prices for the winter of 2014-15, making the 
purchase of spring and summer gas for injection into 
storage less desirable. As a result of these current trends, 
we anticipate contracting for the upcoming storage year at 
lower market prices than in previous periods, especially at 
our California facility, where some multi-year contracts are 
expiring. In the longer term, increased demand for natural 
gas and/or decreased drilling activity could change the 
current supply/demand imbalance and result in higher gas 
prices or increased market volatility, which could position 
this segment for growth.

See Note 4 for more information on gas storage assets and 
results of operations and "Financial Condition—Liquidity 
and Capital Resources".

Gas Storage Facilities
The following table provides information concerning the 
Company’s non-utility gas storage facilities:

Maximum

Storage
Capacity 
(Bcf)

Deliverability
(Bcf/day)(3)

Injection
(Bcf/day)(3)

Mist Storage(1)

6

0.2

0.1

0.5

Gill Ranch Storage(2)
0.2
15
(1) Approximately 6 Bcf of a total 16 Bcf at Mist is currently available 
to our gas storage segment. The remaining 10 Bcf is used to 
provide gas storage for our local distribution business and its utility 
customers. All storage capacity and daily deliverability currently 
developed for the gas storage segment at Mist is available for recall 
by the utility.
(2) Our share of the Gill Ranch facility is currently 15 Bcf out of a 
total capacity of 20 Bcf.
(3) Our share of the expected daily maximum injection and 
deliverability rates.

Mist Storage Facility
The Mist storage facility began operations in 1989 and 
currently consists of seven depleted natural gas reservoirs, 
22 injection and withdrawal wells, a compressor station, 
dehydration and control equipment, gathering lines and 
other related facilities.

SERVICES. Mist provides multi-cycle gas storage services to 
customers in the interstate and intrastate markets from its 
facility located in Columbia County, Oregon, near the town 
of Mist. The Mist field was converted to storage operations 
for our utility customers in 1989. Since 2001, gas storage 
capacity at Mist has been made available to interstate 
customers by developing new incremental capacity in 
advance of core utility customer requirements to meet the 
demands for interstate storage service. These interstate 
storage services are offered under a limited jurisdiction 
blanket certificate issued by FERC. In addition, since 2005 
we have offered intrastate firm storage services in Oregon 
under an OPUC-approved rate schedule as an optional 
service to eligible non-residential utility customers. 

CUSTOMERS. For Mist interstate storage services, firm 
service agreements with customers are entered into with 
terms typically ranging from 1 to 10 years. Currently, our 
gas storage revenues from Mist are derived primarily from 
firm service customers who provide energy related services, 
including natural gas production or distribution, electric 
generation, and energy marketing. Three storage customers 
currently account for over 90% of our existing non-utility gas 
storage capacity at Mist, with the largest customer 
accounting for about half of the total capacity. These three 
customers have contracts that expire at various dates 
through 2018. 

COMPETITIVE CONDITIONS. Our Mist gas storage facility 
benefits from limited competition from other Pacific 
Northwest storage facilities primarily because of its 
geographic location. However, competition from other 
storage providers in Washington and Canada, as well as 
competition for interstate pipeline capacity, does exist. In the 
future, we could face increased competition from new or 
expanded gas storage facilities as well as from new natural 
gas pipelines, marketers, and alternative energy sources.

8

 
 
SEASONALITY. Mist gas storage revenues generally do not 
follow seasonal patterns similar to those experienced by the 
utility because most of the storage capacity is contracted 
with customers for firm service, which are primarily in the 
form of fixed monthly reservation charges and are not 
affected by customer usage. However, there is seasonal 
variation with Mist storage capacity related to utility 
customers' lower demand during the spring and summer 
months. This surplus storage capacity and related 
transportation capacity can be optimized under regulatory 
sharing agreements with the OPUC and WUTC. See "Asset 
Management" below.

REGULATION. Our Mist facility is subject to regulation by the 
OPUC and WUTC. In addition, FERC has approved 
maximum cost-based rates under our Mist interstate storage 
certificate. We are required to file either a petition for rate 
approval or a cost and revenue study with FERC at least 
every five years to change or justify maintaining the existing 
rates for the interstate storage service. See Part II, Item 7, 
"Results of Operations–Regulatory Matters".

EXPANSION OPPORTUNITIES. The Pacific Northwest storage 
markets have been impacted by lower gas prices and lack 
of price volatility, although less than other areas of the 
country. The need for new, flexible gas-fired generation has 
been identified in the Pacific Northwest region to integrate 
intermittent wind resources into the power system, thereby 
increasing the associated need for gas storage. To address 
this need, we are in the early planning stages of a potential 
expansion of our Mist storage facility. If completed, this 
expansion would be anchored by an agreement to provide 
gas storage services to Portland General Electric (PGE) to 
support their gas-fired generation facilities at Port 
Westward, Oregon. The Mist expansion project is subject to 
PGE's approval of projected costs and various other 
approvals, regulatory requirements, and other conditions. 

Gill Ranch Facility
Gill Ranch Storage, LLC (Gill Ranch), our subsidiary, has a 
joint project agreement with Pacific Gas and Electric 
Company (PG&E) to develop and own the Gill Ranch 
underground natural gas storage facility near Fresno, 
California. Currently, Gill Ranch is the sole operator of the 
facility. The facility began operations in the fourth quarter of 
2010 and currently consists of three depleted natural gas 
reservoirs, 12 injection and withdrawal wells, a compressor 
station, dehydration and control equipment, gathering lines, 
an electric substation, a natural gas transmission pipeline 
extending 27 miles from the storage field to an 
interconnection with the PG&E transmission system, and 
other related facilities. Gill Ranch owns the rights to 75% of 
the available storage capacity at the facility. Gill Ranch’s 
share of the facility currently provides 15 Bcf of working gas 
capacity.

California has been impacted by challenging market 
conditions for gas storage, with contract prices in the region 
at historic lows and a greater number of competitors in the 
area compared to the Pacific Northwest region. As a result, 
we anticipate contracting at lower market prices than we 
have in the previous years. We are committed to using a 
variety of contracting tools to maximize the value from the 
Gill Ranch facility. In the longer term, the recovery of the 
California economy and potentially an increased demand for 

9

flexible generation could increase demand for natural gas 
storage and increase price volatility. 

SERVICES. Gill Ranch provides intrastate, multi-cycle 
storage services in California at market-based rates under a 
CPUC-approved tariff that includes firm storage service, 
interruptible storage service, and park and loan storage 
services. The Gill Ranch facility is not currently authorized 
to provide interstate gas storage services.

CUSTOMERS. Customer contracts for firm storage capacity 
at Gill Ranch are as long as 28 years in duration; however, 
the majority of the contracted capacity is shorter term in 
nature due to current market conditions. In the near-term, 
we expect Gill Ranch to contract for terms mostly ranging 
from one to five years. For the 2013-14 gas storage year, 
Gill Ranch has several storage customers, with the largest 
single contract accounting for approximately 13% of our 
storage capacity. We are currently in the process of 
contracting available capacity for the upcoming 2014-15 gas 
storage year and expect shorter contract lengths and lower 
prices reflecting current market trends. 

The California market served by Gill Ranch is larger, and 
has a greater diversity of prospective customers, than the 
Pacific Northwest market served by Mist. Therefore, we 
expect less sensitivity to any single customer or group of 
customers at Gill Ranch. Current Gill Ranch customers 
provide energy related services, including natural gas 
production, marketing, and electric generation.

COMPETITIVE CONDITIONS. The Gill Ranch storage facility 
competes with a number of other storage providers, 
including local integrated gas companies and other 
independent storage operators in the northern California 
market. There could also be expansions and proposed new 
construction of storage capacity in northern California that 
may create increased competition.

SEASONALITY. Although we expect much of the storage 
revenue at Gill Ranch to be in the form of fixed monthly 
demand charges, cash flows can fluctuate due to timing of 
asset management revenues. In addition, a significant 
portion of operating costs at Gill Ranch are subject to 
seasonality based on periods when storage customers elect 
to inject or withdraw.

REGULATION. Gill Ranch has a tariff on file with the CPUC 
authorizing it to charge market-based rates for the storage 
services offered. See Part II, Item 7, "Results of 
Operations–Regulatory Matters".

EXPANSION OPPORTUNITIES. Subject to market demand, 
project execution, available financing, receipt of future 
permits, and other rights, the Gill Ranch storage facility can 
be expanded beyond the current combined permitted 
capacity of 20 Bcf without further expansion of the takeaway 
pipeline system. Taking these considerations into account 
and with certain infrastructure modifications, we currently 
estimate that the Gill Ranch storage facility could support an 
additional 25 Bcf of storage capacity, bringing the total 
storage capacity to approximately 45 Bcf, of which our 
current rights would give us up to an additional 7.5 Bcf or 
ownership of a total of approximately 22.5 Bcf.

These factors include, but are not limited to, the following:
• 
• 

the complexity of the site;
changes in environmental laws and regulations at the 
federal, state and local levels;
the number of regulatory agencies or other parties 
involved;
new technology that renders previous technology 
obsolete, or experience with existing technology that 
proves ineffective;
the ultimate selection of a particular technology;
the level of remediation required; and
variations between the estimated and actual period of 
time that must be dedicated to respond to an 
environmentally-contaminated site.

• 

• 

• 
• 
• 

We seek recovery of environmental costs through insurance 
and customer rates, and we believe recovery of these costs 
is probable. We currently have an open proceeding with the 
OPUC to resolve implementation issues for the SRRM, 
which allows for regulatory environmental cost recovery. As 
there is uncertainty surrounding the outcome of this 
proceeding, we will continue to carefully assess these 
environmental assets for recoverability. If it is determined 
that insurance recoveries for environmental costs are 
insufficient and future rate recovery of such costs are not 
probable, the costs will be charged to expense in the period 
such determination is made. See Note 17 and Item 3 "Legal 
Proceedings" for information regarding the recent 
settlement with remaining defendant insurance companies. 
See also "Results of Operations—Rate Matters—Rate 
Mechanisms—Environmental Costs" below and Note 15. 

Greenhouse Gas Issues
We recognize that our businesses are likely to be impacted 
by future requirements to address greenhouse gas 
emissions. Future federal and/or state requirements may 
seek to limit future emissions of greenhouse gases, 
including both carbon dioxide (CO2) and methane. These 
future laws and regulations may require certain activities to 
reduce emissions and/or increase the price paid for energy 
based on its carbon content. 

Current federal rules require the reporting of greenhouse 
gas emissions. In September 2009, the EPA issued a final 
rule requiring the annual reporting of greenhouse gas 
emissions from certain industries, specified large 
greenhouse gas emission sources, and facilities that emit 
25,000 metric tons or more of CO2 equivalents per year. We 
began reporting emission information in 2011. Under this 
reporting rule, local gas distribution companies like NW 
Natural are required to report system throughput to the EPA 
on an annual basis. The EPA also issued additional 
greenhouse gas reporting regulations requiring the annual 
reporting of fugitive emissions from our operations. 

Asset Management
We contract with an independent energy marketing 
company to provide asset management services, primarily 
through the use of commodity transactions and pipeline 
capacity release transactions, the results of which are 
included in the gas storage segment, except for amounts 
allocated to our utility pursuant to regulatory sharing 
agreements involving the use of utility assets. Utility pre-tax 
income from third-party asset management services is 
subject to revenue sharing with core utility customers. See 
Part II, Item 7, "Results of Operations—Business Segments
—Gas Storage".

OTHER 

We have immaterial non-utility investments and other 
business activities which are aggregated and reported as 
other. Other primarily consists of: 
• 

an equity method investment in a joint venture to build 
and operate a gas transmission pipeline in Oregon.  
Palomar Gas Holdings, LLC (PGH) is owned 50% by 
NWN Energy, a wholly-owned subsidiary of NW 
Natural, and 50% by TransCanada American 
Investments Ltd., an indirect wholly-owned subsidiary 
of TransCanada Corporation. See Part II, Item 7, "2014 
Outlook";
a minority interest in Kelso-Beaver Pipeline held by our 
wholly-owned subsidiary NNG Financial Corporation 
(NNG Financial); and 
other operating and non-operating income and 
expenses of the parent company that are not included 
in utility or gas storage operations. 

• 

• 

The pipelines referred to above are regulated by FERC. 
Less than 1% of our consolidated assets and consolidated 
net income are related to activities in other. See Note 4 for 
summary information for these assets and results of 
operations.

ENVIRONMENTAL ISSUES 

Properties and Facilities  
We own, or previously owned, properties and facilities that 
are currently being investigated that may require 
environmental remediation and are subject to federal, state 
and local laws and regulations related to environmental 
matters. These laws and regulations may require 
expenditures over a long timeframe to address certain 
environmental impacts. Estimates of liabilities for 
environmental costs are difficult to determine with precision 
because of the various factors that can affect their ultimate 
disposition. 

10

 
The outcome of federal and state policy development in the 
area of climate change cannot be determined at this time, 
but these initiatives could produce a number of results 
including new regulations, legal actions, additional charges 
to fund energy efficiency activities, or other regulatory 
actions. The adoption and implementation of any 
regulations limiting emissions of greenhouse gas from our 
operations could require us to incur costs to reduce 
emissions of greenhouse gases associated with our 
operations, which could result in an increase in the prices 
we charge our customers or a decline in the demand for 
natural gas. On the other hand, because natural gas is a 
fossil fuel with relatively low carbon content, it is also 
possible that future carbon constraints could create 
additional demand for natural gas for electric generation, 
direct use of natural gas in homes and businesses, and as a 
reliable and relatively low-emission back-up fuel source for 
alternative energy sources. Requirements to reduce 
greenhouse gas emissions from the transportation sector, 
such as those in Oregon’s clean fuel standard, could also 
result in additional demand for natural gas for use in 
vehicles.

We continue to take steps to address future greenhouse 
gas emission issues, including actively participating in policy 
development through participation on various Oregon 
taskforces and, at the federal level, within the American Gas 
Association. We engage in policy development and in 
identifying ways to reduce greenhouse gas emissions 
associated with our operations and our customers’ gas use, 
including offering the Smart Energy program, which allows 
customers to voluntarily contribute funds to projects such as 
biodigesters on dairy farms that offset the greenhouse 
gases produced from their natural gas use.

EMPLOYEES 

At December 31, 2013, the utility workforce consisted of 612 
members of the Office and Professional Employees 
International Union (OPEIU) Local No. 11, AFL-CIO, and 
469 non-union employees. Our labor agreement with 
members of OPEIU that covers wages, benefits and 
working conditions extends to May 31, 2014, and thereafter 
from year to year unless either party serves notice of its 
intent to negotiate modifications to the collective bargaining 
agreement. In 2013, each party served notice of intent to 
negotiate the terms of an agreement prior to the May 31, 
2014 expiration date. We are currently engaged in 
negotiations to meet this schedule.

At December 31, 2013, our subsidiaries had a combined 
workforce of 19 non-union employees. Our subsidiaries 
receive certain services from centralized operations at the 
utility, and the utility is reimbursed for those services 
pursuant to a Shared Services Agreement.

ADDITIONS TO INFRASTRUCTURE

We make capital expenditures in order to maintain and 
enhance the safety and integrity of our pipelines, gate 
stations, storage facilities and related assets, to expand the 
reach or capacity of those assets, or improve the efficiency 
of our operations. We expect to make a significant level of 
capital expenditures for additions to utility and gas storage 
infrastructure over the next five years, reflecting continued 
investments in customer growth, technology, and 
distribution system improvements. In 2014, utility capital 
expenditures are estimated to be between $115 and $135 
million, and non-utility capital investments are estimated to 
be less than $10 million. Additional non-utility spend for gas 
storage and other investments during and after 2014 will 
depend largely on future decisions about potential 
expansion opportunities in gas storage and pipeline 
projects. For the five-year period ending in 2018, capital 
expenditures for the utility are estimated to be between 
$600 and $700 million, while the amount for gas storage 
and other investments after 2014 will depend largely on the 
factors discussed previously.

EXECUTIVE OFFICERS OF THE REGISTRANT

For information concerning our executive officers, see Part 
III, Item 10.

AVAILABLE INFORMATION

We file annual, quarterly and special reports and other 
information with the Securities and Exchange Commission 
(SEC). Reports, proxy statements and other information 
filed by us can be read and requested through the SEC by 
mail at U.S. Securities and Exchange Commission, Office of 
FOIA/PA Operations, 100 F Street, N.E., Washington, D.C. 
20549, by facsimile at (202) 772-9337, or online at its 
website (http://www.sec.gov). You can obtain information 
about access to the Public Reference Room and how to 
access or request records by calling the SEC at (202) 
551-8090. The SEC website contains reports, proxy and 
information statements and other information that we file 
electronically. In addition, we make available on our website 
(http://www.nwnatural.com), our annual report on Form 10-
K, quarterly reports on Form 10-Q, current reports on Form 
8-K, and amendments to those reports filed or furnished 
pursuant to Section 13(a) or 15(d) and proxy materials filed 
under Section 14 of the Securities Exchange Act of 1934, as 
amended (Exchange Act), as soon as reasonably 
practicable after we electronically file such material with, or 
furnish it to, the SEC. 

We have adopted a Code of Ethics for all employees and 
officers that is available on our website. We intend to 
disclose amendments to, and any waivers from the Code of 
Ethics on our website. Our Corporate Governance 
Standards, Director Independence Standards, charters of 
each of the committees of the Board of Directors and 
additional information about us are also available at the 
website. Copies of these documents may be requested, at 
no cost, by writing or calling Shareholder Services, NW 
Natural, One Pacific Square, 220 N.W. Second Avenue, 
Portland, Oregon 97209, telephone 503-226-4211 ext. 
2402.

11

ITEM 1A. RISK FACTORS

Our business and financial results are subject to a number 
of risks and uncertainties, many of which are not within our 
control. When considering any investment in our securities, 
investors should carefully consider the following information, 
as well as information contained in the caption "Forward-
Looking Statements", Item 7A, and other documents we file 
with the SEC. This list is not exhaustive and the order of 
presentation does not reflect management’s determination 
of priority or likelihood. Additionally, our listing of risk factors 
that primarily affects one of our business segments does not 
indicate that such risk factor is inapplicable to our other 
business segments.

Risks Related to our Business Generally
REGULATORY RISK. Regulation of our businesses, including 
changes in the regulatory environment, failure of regulatory 
authorities to approve rates which provide for timely 
recovery of our costs and an adequate return on invested 
capital, or an unfavorable outcome in regulatory 
proceedings may adversely impact our financial condition 
and results of operations.

The OPUC and WUTC have general regulatory authority 
over our utility business in Oregon and Washington, 
respectively, including the rates charged to customers, 
authorized rates of return on rate base, including ROE, the 
amounts and types of securities we may issue, services we 
provide and the manner in which we provide them, the 
nature of investments we make, actions investors may take 
with respect to our company, and deferral and recovery of 
various expenses, including, but not limited to, pipeline 
replacement, environmental remediation costs, pension 
expense, transactions with affiliated interests, and other 
matters. Similarly, in our gas storage businesses FERC has 
regulatory authority over interstate storage services, and the 
CPUC has regulatory authority over our Gill Ranch storage 
operations.

The prices that the OPUC and WUTC allow us to charge for 
retail service, and the tariff rate that FERC permits us to 
charge for transmission, are the most significant factors 
affecting our financial position, results of operations and 
liquidity. The OPUC and WUTC have the authority to 
disallow recovery of costs they find imprudently incurred. 
For example, in our most recent Oregon rate case 
concluding in 2012, the OPUC disallowed certain deferred 
tax amounts for which the deferral was not previously 
reviewed by the OPUC, resulting in an after tax charge to 
net income when the order was received. Additionally, the 
rates allowed by the FERC may be insufficient for recovery 
of costs incurred. We expect to continue to make 
expenditures to expand, improve and operate our utility 
distribution and gas storage systems. Regulators can find 
such expansions or improvements of expenditures were not 
prudently incurred, and deny recovery. Additionally, while 
the OPUC and WUTC have established an authorized rate 
of return for our utility through the ratemaking process, the 
regulatory process does not provide assurance that we will 
be able to achieve the earnings level authorized.

Moreover, in the normal course of business we may place 
assets in service or incur higher than expected levels of 
operating expense before rate cases can be filed to recover 

12

those costs—this is commonly referred to as regulatory lag. 
The failure of any regulatory commission to approve 
requested rate increases on a timely basis to recover 
increased costs or to allow an adequate return could 
adversely impact our financial condition and results of 
operations.

In our latest general rate case with the OPUC, various items 
were deferred for future resolution in separate proceedings, 
including the definition of the earnings test under the SRRM, 
the prudence of environmental expenditures we have 
deferred to date, recovery of prepaid pension costs, and our 
revenue-sharing arrangement on the utility's interstate 
storage activities. The regulatory proceedings in which 
these issues will be resolved typically involve multiple 
parties, including governmental agencies, consumer 
advocacy groups, and others who are impacted by the use 
of natural gas. Each party has differing concerns, but all 
generally have the common objective of limiting amounts 
included in rates. We cannot predict the outcome of these 
deferred proceedings or the effects of those outcomes on 
our results of operations and financial condition.

ENVIRONMENTAL LIABILITY RISK. Certain of our properties 
and facilities may pose environmental risks requiring 
remediation, the costs of which are difficult to estimate and 
which could adversely affect our financial condition, results 
of operations, and cash flows.

We own, or previously owned, properties that require 
environmental remediation or other action. We accrue all 
material loss contingencies relating to these properties. A 
regulatory asset at the utility has already been recorded for 
estimated costs pursuant to a deferral order from the OPUC 
and WUTC. In addition to maintaining regulatory deferrals, 
we initiated litigation against certain of our historical liability 
insurers for a portion of the costs we have incurred to date 
and expect to incur in the future. To the extent amounts we 
recover from insurance are inadequate or we are unable to 
recover these deferred costs in utility customer rates, we 
would be required to reduce our regulatory asset which 
would result in a charge to current year earnings. In 
addition, in our most recent Oregon general rate case, the 
OPUC approved the SRRM, which limits recovery of our 
deferred amounts to those amounts which satisfy an annual 
prudence review and an earnings test, the definition of 
which was deferred to a later regulatory proceeding. These 
prudence reviews and earnings tests could reduce the 
amounts we are allowed to recover, and which could 
adversely affect our financial condition, results of operations 
and cash flows.

In addition to litigation against historical insurers, we may 
have disputes with regulators and other parties as to the 
severity of particular environmental matters and what 
remediation efforts are appropriate. We cannot predict with 
certainty the amount or timing of future expenditures related 
to environmental investigation, remediation or other action, 
or disputes or litigation arising in relation thereto. Our 
liability estimates are based on current remediation 
technology, industry experience gained at similar sites, an 
assessment of the probable level of involvement, and 
financial condition of other potentially responsible parties. 
However, it is difficult to estimate such costs due to 
uncertainties surrounding the course of environmental 

remediation, the preliminary nature of certain of our site 
investigations, and the application of environmental laws 
that impose joint and several liabilities on all potentially 
responsible parties. These uncertainties and disputes 
arising therefrom could lead to further adversarial 
administrative proceedings or litigation, with associated 
costs and uncertain outcomes, all of which could adversely 
affect our financial condition, results of operations and cash 
flows. 

ENVIRONMENTAL REGULATION COMPLIANCE RISK. We are 
subject to environmental regulations for our ongoing 
operations, compliance with which could adversely affect 
our operations or financial results.

We are subject to laws, regulations and other legal 
requirements enacted or adopted by federal, state and local 
governmental authorities relating to protection of the 
environment, including those legal requirements that govern 
discharges of substances into the air and water, the 
management and disposal of hazardous substances and 
waste, groundwater quality and availability, plant and wildlife 
protection, and other aspects of environmental regulation. 
Current and additional environmental regulations could 
result in increased compliance costs or additional operating 
restrictions and could have an adverse effect on our 
financial condition and results of operations, particularly if 
those costs are not fully recoverable from insurance or 
through utility customer rates.

GLOBAL CLIMATE CHANGE RISK. Future legislation to 
address global climate change may expose us to regulatory 
and financial risk. Additionally, our business may be subject 
to physical risks associated with climate change, all of which 
could adversely affect our financial condition, results of 
operations and cash flows.

There are a number of international, federal and state 
legislative and regulatory initiatives being proposed and 
adopted in an attempt to measure, control or limit the effects 
of global warming and overall climate change, including 
greenhouse gas emissions such as carbon dioxide and 
methane. Such current or future legislation or regulation 
could impose on us operational requirements, additional 
charges to fund energy efficiency initiatives, or levy a tax 
based on carbon content. Such initiatives could result in us 
incurring additional costs to comply with the imposed 
restrictions, provide a cost advantage to energy sources 
other than natural gas, reduce demand for natural gas, 
impose costs or restrictions on end users of natural gas, 
impact the prices we charge our customers, impose 
increased costs on us associated with the adoption of new 
infrastructure and technology to respond to such 
requirements, and may impact cultural perception of our 
service or products negatively, diminishing the value of our 
brand, all of which could adversely affect our business 
practices, financial condition and results of operations.

Climate change may cause physical risks, including an 
increase in sea level, intensified storms, water scarcity and 
changes in weather conditions, such as changes in 
precipitation, average temperatures and extreme wind or 
other climate conditions. A significant portion of the nation’s 
gas infrastructure is located in areas susceptible to storm 
damage that could be aggravated by wetland and barrier 

13

island erosion, which could give rise to gas supply 
interruptions and price spikes.

These and other physical changes could result in 
disruptions to natural gas production and transportation 
systems potentially increasing the cost of gas beyond that 
assumed in our PGA and affecting our ability to procure gas 
to meet our customer demand. These changes could also 
affect our distribution systems resulting in increased 
maintenance and capital costs, disruption of service, 
regulatory actions and lower customer satisfaction. 
Additionally, to the extent that climate change adversely 
impacts the economic health or weather conditions of our 
service territory directly, it could adversely impact customer 
demand or our customers' ability to pay. Such physical risks 
could have an adverse effect on our financial condition, 
results of operations, and cash flows.

BUSINESS DEVELOPMENT RISK. Our business development 
projects may encounter unanticipated obstacles, costs, 
changes or delays that could result in a project becoming 
impaired, which could negatively impact our financial 
condition, results of operations and cash flows.

Business development projects involve many risks. We are 
currently engaged in several business development 
projects, including, but not limited to, the early planning and 
development stages for a regional cross-Cascades pipeline 
in Oregon, and a potential expansion of our gas storage 
facility at Mist. We may also engage in other business 
development projects such as investment in additional long-
term gas reserves or CNG refueling stations. With respect 
to these projects, we may not be able to obtain required 
governmental permits and approvals to complete our 
projects in a cost-efficient or timely manner potentially 
resulting in delays or abandonment of the projects. We 
could also experience startup and construction delays, 
construction cost overruns, inability to negotiate acceptable 
agreements such as rights-of-way, easements, construction, 
gas supply or other material contracts, changes in customer 
demand or commitment, public opposition to projects, 
changes in market prices, and operating cost increases. 
Additionally, we may be unable to finance our business 
development projects at acceptable interest rates or within a 
scheduled time frame necessary for completing the project. 
One or more of these events could result in the project 
becoming impaired, and such impairment could have an 
adverse effect on our financial condition and results of 
operations.

JOINT PARTNER RISK. Investing in business development 
projects through partnerships, joint ventures or other 
business arrangements affects our ability to manage certain 
risks and could adversely impact our financial condition, 
results of operations and cash flows.

We use joint ventures and other business arrangements to 
manage and diversify the risks of certain utility and non-
utility development projects, including our cross-Cascades 
pipeline, Gill Ranch storage and Encana gas reserves. We 
may acquire or develop part-ownership interests in other 
similar projects in the future. Under these arrangements, we 
may not be able to fully direct the management and policies 
of the business relationships, and other participants in those 
relationships may take action contrary to our interests 

 
including making operational decisions that could affect our 
costs and liabilities. In addition, other participants may 
withdraw from the project, divest important assets, become 
financially distressed or bankrupt, or have economic or 
other business interests or goals that are inconsistent with 
ours. 

For example, our gas reserves venture with Encana, which 
operates as a hedge backed by physical gas supplies, 
involves a number of risks. These risks include gas 
production that is significantly less than the expected 
volumes, or no gas volumes; operating costs that are higher 
than expected; changes in our consolidated tax position or 
tax law that could affect our ability to take, or timing of, 
certain tax benefits that impact the financial outcome of this 
transaction; inherent risks of gas production, including 
disruption to operations or complete shut-in of the field; and 
a participant in one of these business arrangements acting 
contrary to our interests. In addition, while the cost of the 
gas reserves venture with Encana is currently included in 
customer rates, the occurrence of one or more of these 
risks, could affect our ability to recover this hedge in rates, 
which could adversely impact the project as well as our 
financial condition, results of operations and cash flows. 

OPERATING RISK. Transporting and storing natural gas 
involves numerous risks that may result in accidents and 
other operating risks and costs, some or all of which may 
not be fully covered by insurance, and which could 
adversely affect our financial condition, results of operations 
and cash flows.

• 

• 

• 
• 

• 

Our operations are subject to all of the risks and hazards 
inherent in the businesses of local gas distribution and 
storage, including:
• 

earthquakes, floods, storms, landslides and other 
adverse weather conditions and hazards;
leaks or other losses of natural gas or other 
hydrocarbons as a result of the malfunction of 
equipment or facilities;
damages from third parties, including construction, farm 
and utility equipment or other surface users;
operator errors;
negative unpredicted performance by our storage 
reservoirs that could cause us to fail to meet expected 
or forecasted operational levels or contractual 
commitments to our customers;
problems maintaining, or the malfunction of, pipelines, 
wellbores and related equipment and facilities that form 
a part of the infrastructure that is critical to the 
operation of our gas distribution and storage facilities;
collapse of underground storage caverns;

• 
•  migration of natural gas through faults in the rock or to 
some area of the reservoir where existing wells cannot 
drain the gas effectively resulting in loss of the gas;
blowouts (uncontrolled escapes of gas from a pipeline 
or well) or other accidents, fires and explosions; and
risks and hazards inherent in the drilling operations 
associated with the development of the gas storage 
facilities and/or wells.

• 

• 

These risks could result in personal injury or loss of human 
life, damage to and destruction of property and equipment, 
pollution or other environmental damage, breaches of our 
contractual commitments, and may result in curtailment or 
suspension of our operations, which in turn could lead to 

14

significant costs and lost revenues. Further, because our 
pipeline, storage and distribution facilities are in or near 
populated areas, including residential areas, commercial 
business centers, and industrial sites, any loss of human life 
or adverse financial outcome resulting from such events 
could be significant. Additionally, we may not be able to 
obtain the level or types of insurance we desire, and the 
insurance coverage we do obtain may contain large 
deductibles or fail to cover certain hazards or cover all 
potential losses. The occurrence of any operating risks not 
covered by insurance could adversely affect our financial 
condition, results of operations and cash flows.

BUSINESS CONTINUITY RISK. We may be adversely 
impacted by local or national disasters, pandemic illness, 
terrorist activities, including cyber attacks, and other 
extreme events to which we may not able to promptly 
respond.

Local or national disasters, pandemic illness, terrorist 
activities, including cyber attacks, and other extreme events 
are a threat to our assets and operations. Companies in our 
industry may face a heightened risk due to exposure to acts 
of terrorism, including physical and cyber attacks, which 
could target or impact our natural gas distribution, 
transmission or storage facilities and result in a disruption in 
our operations and ability to meet customer requirements. In 
addition, the threat of terrorist activities could lead to 
increased economic instability and volatility in the price of 
natural gas that could affect our operations. Threatened or 
actual national disasters or terrorist activities may also 
disrupt capital markets and our ability to raise capital, or 
impact our suppliers or our customers directly. Local 
disaster or pandemic illness could result in part of our 
workforce being unable to operate or maintain our 
infrastructure or perform other tasks necessary to conduct 
our business. A slow or inadequate response to events may 
have an adverse impact on operations and earnings. We 
may not be able to obtain sufficient insurance to cover all 
risks associated with local and national disasters, pandemic 
illness, terrorist activities and other events, which could 
increase the risk that an event could adversely affect our 
operations or financial results.

EMPLOYEE BENEFIT RISK. The cost of providing pension 
and postretirement healthcare benefits is subject to changes 
in pension assets and liabilities, changing employee 
demographics and changing actuarial assumptions, which 
may have an adverse effect on our financial condition, 
results of operations and cash flows.

Until we closed the plans to new hires, which for non-union 
employees was in 2006 and for union employees was in 
2009, we provided pension plans and postretirement 
healthcare benefits to eligible full-time utility employees and 
retirees. Most of our current utility employees were hired 
prior to these dates, and therefore remain eligible for these 
plans. Our cost of providing such benefits is subject to 
changes in the market value of our pension assets, changes 
in employee demographics including longer life 
expectancies, increases in healthcare costs, current and 
future legislative changes, and various actuarial calculations 
and assumptions. The actuarial assumptions used to 
calculate our future pension and postretirement healthcare 
expense may differ materially from actual results due to 

significant market fluctuations and changing withdrawal 
rates, wage rates, interest rates and other factors. These 
differences may result in an adverse impact on the amount 
of pension contributions, pension expense or other 
postretirement benefit costs recorded in future periods. 
Sustained declines in equity markets and reductions in bond 
rates may have a material adverse effect on the value of our 
pension fund assets. In these circumstances, we may be 
required to recognize increased contributions and pension 
expense earlier than we had planned to the extent that the 
value of pension assets is less than the total anticipated 
liability under the plans, which could have a negative impact 
on financial condition, results of operations and cash flows.

WORKFORCE RISK. Our business is heavily dependent on 
being able to attract and retain qualified employees and 
maintain a competitive cost structure with market-based 
salaries and employee benefits, and workforce disruptions 
could adversely affect our operations and results.

Our ability to implement our business strategy and serve our 
customers is dependent upon our continuing ability to attract 
and retain talented professionals and a technically skilled 
workforce, and being able to transfer the knowledge and 
expertise of our workforce to new employees as our aging 
employees retire. Without an appropriately skilled 
workforce, our ability to provide quality service and meet our 
regulatory requirements will be challenged and this could 
negatively impact our earnings. Additionally, within our utility 
segment a majority of our workers are represented by the 
OPEIU Local No.11 AFL-CIO (the Union), and are covered 
by a collective bargaining agreement that extends to May 
31, 2014. Disputes with the Union over terms and conditions 
of the agreement could result in instability in our labor 
relationship and work stoppages that could impact the 
timely delivery of gas and other services from our utility and 
Mist gas storage, which could strain relationships with 
customers and state regulators and cause a loss of 
revenues. Our collective bargaining agreement may also 
increase the cost of employing our Union workforce, affect 
our ability to continue offering market-based salaries and 
employee benefits, limit our flexibility in dealing with our 
workforce, and limit our ability to change work rules and 
practices and implement other efficiency-related 
improvements to successfully compete in today’s 
challenging marketplace, which may negatively affect our 
financial condition and results of operations.

LEGISLATIVE, COMPLIANCE AND TAXING AUTHORITY RISK. 
We are subject to governmental regulation, and compliance 
with local, state and federal requirements, including taxing 
requirements, and unforeseen changes in or interpretations 
of such requirements could affect our financial condition and 
results of operations.

We are subject to regulation by federal, state and local 
governmental authorities. We are required to comply with a 
variety of laws and regulations and to obtain authorizations, 
permits, approvals and certificates from governmental 
agencies in various aspects of our business. We cannot 
predict with certainty the impact of any future revisions or 
changes in interpretations of existing regulations or the 
adoption of new laws and regulations applicable to them. 
Additionally, any failure to comply with existing or new laws 
and regulations could result in fines, penalties or injunctive 

15

measures that could affect operating assets. For example, 
under the Energy Policy Act of 2005, the FERC has civil 
authority under the Natural Gas Act to impose penalties for 
current violations of up to $1 million per day for each 
violation. In addition, as the regulatory environment for our 
industry increases in complexity, the risk of inadvertent 
noncompliance may also increase. Changes in regulations, 
the imposition of additional regulations, and the failure to 
comply with laws and regulations could negatively influence 
our operating environment and results of operations. 

Additionally, changes in federal, state or local tax laws and 
their related regulations, or differing interpretation or 
enforcement of applicable law by a federal, state or local 
taxing authority, could result in substantial cost to us and 
negatively affect our results of operations. Tax law and its 
related regulations and case law are inherently complex and 
dynamic. Disputes over interpretations of tax laws may be 
settled with the taxing authority in examination, upon appeal 
or through litigation. Our judgments may include reserves 
for potential adverse outcomes regarding tax positions that 
have been taken that may be subject to challenge by taxing 
authorities. Changes in laws, regulations or adverse 
judgments may negatively affect our financial condition and 
results of operations.

SAFETY REGULATION RISK. We may experience increased 
federal, state and local regulation of the safety of our 
systems and operations, which could adversely affect our 
operating costs and financial results.

The safety and protection of the public, our customers and 
our employees is and will remain our top priority. We are 
committed to consistently monitoring and maintaining our 
distribution system and storage operations to ensure that 
natural gas is acquired, stored and delivered safely, reliably 
and efficiently. Given recent high-profile natural gas 
explosions and accidents in other parts of the country, we 
anticipate that the natural gas industry may be the subject of 
even greater federal, state and local regulatory oversight. 
We intend to work diligently with industry associations and 
federal and state regulators to ensure compliance with the 
new laws. We expect there to be increased costs 
associated with compliance these laws, and those costs 
could be significant. If these costs are not recoverable in our 
customer rates, they could have a negative impact on our 
operating costs and financial results.

HEDGING RISK. Our risk management policies and hedging 
activities cannot eliminate the risk of commodity price 
movements and other financial market risks, and our 
hedging activities may expose us to additional liabilities for 
which rate recovery may be disallowed, which could result 
in an adverse impact on our operating revenues, costs, 
derivative assets and liabilities and operating cash flows.

Our gas purchasing requirements expose us to risks of 
commodity price movements, while our use of debt and 
equity financing exposes us to interest rate, liquidity and 
other financial market risks. In our Utility segment, we 
attempt to manage these exposures with both financial and 
physical hedging mechanisms, including our gas reserve 
transaction with Encana which is a hedge backed by 
physical gas supplies. While we have risk management 
procedures for hedging in place, they may not always work 

 
as planned and cannot entirely eliminate the risks 
associated with hedging. Additionally, our hedging activities 
may cause us to incur additional expenses to obtain the 
hedge. We do not hedge our entire interest rate or 
commodity cost exposure, and the unhedged exposure will 
vary over time. Gains or losses experienced through 
hedging activities, including carrying costs, generally flow 
through the PGA mechanism or are recovered in future 
general rate cases. However, the hedge transactions we 
enter into for the utility are subject to a prudence review by 
the OPUC and WUTC, and, if found imprudent, those 
expenses may be disallowed, which could have an adverse 
effect on our financial condition and results of operations. 

In addition, our actual business requirements and available 
resources may vary from forecasts, which are used as the 
basis for our hedging decisions, and could cause our 
exposure to be more or less than we anticipated. Moreover, 
if our derivative instruments and hedging transactions do 
not qualify for hedge accounting under generally accepted 
accounting standards, our hedges may not be effective and 
our results of operations and financial condition could be 
adversely affected.

We also have credit-related exposure to derivative 
counterparties. In general, we require our counterparties to 
have an investment-grade credit rating at the time the 
derivative instrument is entered into, and we specify limits 
on the contract amount and duration based on each 
counterparty’s credit rating. Nevertheless, counterparties 
owing us money or physical natural gas commodities could 
breach their obligations. Should the counterparties to these 
arrangements fail to perform, we may be forced to enter into 
alternative arrangements to meet our normal business 
requirements. In that event, our financial results could be 
adversely affected. Additionally, under most of our hedging 
arrangements, any downgrade of our senior unsecured 
long-term debt credit rating could allow our counterparties to 
require us to post cash, a letter of credit or other form of 
collateral, which would expose us to additional costs and 
may trigger significant increases in borrowing from our 
credit facilities if the credit rating downgrade is below 
investment grade.

INABILITY TO ACCESS CAPITAL MARKET RISK. Our inability 
to access capital, or significant increases in the cost of 
capital, could adversely affect our financial condition and 
results of operations.

Our ability to obtain adequate and cost effective short-term 
and long-term financing depends on maintaining investment 
grade credit ratings as well as the existence of liquid and 
stable financial markets. Our businesses rely on access to 
capital markets, including commercial paper, bond and 
equity markets, to finance our operations, construction 
expenditures and other business requirements, and to 
refund maturing debt that cannot be funded entirely by 
internal cash flows. Disruptions in capital markets could 
adversely affect our ability to access short-term and long-
term financing. Our access to funds under committed short-
term credit facilities, which are currently provided by a 
number of banks, is dependent on the ability of the 
participating banks to meet their funding commitments. 
Those banks may not be able to meet their funding 
commitments if they experience shortages of capital and 

16

liquidity. Disruptions in the bank or capital financing markets 
as a result of economic uncertainty, changing or increased 
regulation of the financial sector, or failure of major financial 
institutions could adversely affect our access to capital and 
negatively impact our ability to run our business and make 
strategic investments.

A negative change in our current credit ratings, particularly 
below investment grade, could adversely affect our cost of 
borrowing and access to sources of liquidity and capital. 
Such a downgrade could further limit our access to 
borrowing under available credit lines. Additionally, 
downgrades in our current credit ratings below investment 
grade could cause additional delays in accessing the capital 
markets by the utility while we seek supplemental state 
regulatory approval, which could hamper our ability to 
access credit markets on a timely basis. A credit downgrade 
could also require additional support in the form of letters of 
credit, cash or other forms of collateral and otherwise 
adversely affect our financial condition and results of 
operations.

Risks Related Primarily to Our Local Utility Business
GAS PRICE RISK. Higher natural gas commodity prices and 
volatility in the price of gas may adversely affect our results 
of operations and cash flows.

The cost of natural gas is affected by a variety of factors, 
including weather, changes in demand, the level of 
production and availability of natural gas supplies, 
transportation constraints, availability and cost of pipeline 
capacity, federal and state energy and environmental 
regulation and legislation, natural disasters and other 
catastrophic events, national and worldwide economic and 
political conditions, and the price and availability of 
alternative fuels. In our utility segment, the cost we pay for 
natural gas is generally passed through to our customers 
through an annual PGA rate adjustment. If gas prices were 
to increase significantly, it would raise the cost of energy to 
our utility customers, potentially causing those customers to 
conserve or switch to alternate sources of energy. 
Significant price increases could also cause new home 
builders and commercial developers to select alternative 
fuel sources. Decreases in the volume of gas we sell could 
reduce our earnings, and a decline in customers could slow 
growth in our future earnings. Additionally, because a 
portion of any 10% or 20% difference between the 
estimated average PGA gas cost in rates and the actual 
average gas cost incurred is recognized as current income 
or expense, higher average gas costs than those assumed 
in setting rates can adversely affect our operating cash 
flows, liquidity and results of operations. Additionally, 
notwithstanding our current rate structure, higher gas costs 
could result in increased pressure on the OPUC or the 
WUTC to seek other means to reduce rates, which also 
could adversely affect our results of operations and cash 
flows.

Higher gas prices may also cause us to experience an 
increase in short-term debt and temporarily reduce liquidity 
because we pay suppliers for gas when it is purchased, 
which can be in advance of when these costs are recovered 
through rates. Significant increases in the price of gas can 
also slow our collection efforts as customers experience 
increased difficulty in paying their higher energy bills, 

leading to higher than normal delinquent accounts 
receivable resulting in greater expense associated with 
collection efforts and increased bad debt expense.

CUSTOMER GROWTH RISK. Our utility margin, earnings and 
cash flow may be negatively affected if we are unable to 
sustain customer growth rates in our local gas distribution 
segment.

Our utility margins and earnings growth have largely 
depended upon the sustained growth of our residential and 
commercial customer base due, in part, to the new 
construction housing market, conversions of customers to 
natural gas from other fuel sources and growing commercial 
use of natural gas. Insufficient growth in these markets, for 
economic, political or other reason could result in an 
adverse long-term impact on our utility margin, earnings and 
cash flows.

RISK OF COMPETITION. Our gas distribution business is 
subject to increased competition which could negatively 
affect our results of operations.

In the residential and commercial markets, our gas 
distribution business competes primarily with suppliers of 
electricity, fuel oil, propane, and renewable energy 
providers. In the industrial market, we compete with 
suppliers of all forms of energy. Competition among these 
forms of energy is based on price, efficiency, reliability, 
performance, market conditions, technology, environmental 
impacts and public perception.

Technological improvements in other energy sources such 
as heat pumps could also erode our competitive advantage. 
If natural gas prices rise relative to other energy sources, or 
if the cost, environmental impact or public perception of 
such other energy sources improves relative to natural gas, 
it may negatively affect our ability to attract new customers 
or retain our existing residential, commercial and industrial 
customers, which could have a negative impact on our 
customer growth rate and results of operations.

RELIANCE ON THIRD PARTIES TO SUPPLY NATURAL GAS 
RISK. We rely on third parties to supply the natural gas in 
our distribution segment, and limitations on our ability to 
obtain supplies, or failure to receive expected supplies for 
which we have contracted, could have an adverse impact 
on our financial results.

Our ability to secure natural gas for current and future sales 
depends upon our ability to purchase and receive delivery of 
supplies of natural gas from third parties. We, and in some 
cases, our suppliers of natural gas do not have control over 
the availability of natural gas supplies, competition for those 
supplies, disruptions in those supplies, priority allocations 
on transmission pipelines, or pricing of those supplies. 
Additionally, third parties on which we rely may fail to deliver 
gas for which we have contracted. If we are unable to 
obtain, or are limited in our ability to obtain, natural gas from 
our current suppliers or new sources, we may not be able to 
meet our customers' gas requirements and would likely 
incur costs associated with actions necessary to mitigate 
services disruptions, both of which could significantly and 
negatively impact our results of operations.

SINGLE TRANSPORTATION PIPELINE RISK. We rely on a 
single pipeline company for the transportation of gas to our 
service territory, a disruption of which could adversely 
impact our ability to meet our customers’ gas requirements.

Our distribution system is directly connected to a single 
interstate pipeline, which is owned and operated by 
Northwest Pipeline. The pipeline’s gas flows are bi-
directional, transporting gas into the Portland metropolitan 
market from two directions: (1) the north, which brings 
supplies from the British Columbia and Alberta supply 
basins; and (2) the east, which brings supplies from the 
Alberta and the U.S. Rocky Mountain supply basins. If there 
is a rupture or inadequate capacity in the pipeline, we may 
not be able to meet our customers’ gas requirements and 
we would likely incur costs associated with actions 
necessary to mitigate service disruptions, both of which 
could significantly and negatively impact our results of 
operations.

WEATHER RISK. Warmer than average weather may have a 
negative impact on our revenues and results of operations.

We are exposed to weather risk primarily in our utility 
segment. A majority of our volume is driven by gas sales to 
space heating residential and commercial customers during 
the winter heating season. Current utility rates are based on 
an assumption of average weather. Warmer than average 
weather typically results in lower gas sales. Colder weather 
typically results in higher gas sales. Although the effects of 
warmer or colder weather on utility margin in Oregon are 
expected to be mitigated through the operation of our 
weather normalization mechanism, weather variations from 
normal could adversely affect utility margin because we may 
be required to purchase more or less gas at spot rates, 
which may be higher or lower than the rates assumed in our 
PGA. Also, a portion of our Oregon residential and 
commercial customers (usually less than 10%) have opted 
out of the weather normalization mechanism, and 10% of 
our customers are located in Washington where we do not 
have a weather normalization mechanism. These effects 
could have an adverse effect on our financial condition, 
results of operations and cash flows.

CUSTOMER CONSERVATION RISK. Customers’ conservation 
efforts may have a negative impact on our revenues.

An increasing national focus on energy conservation, 
including improved building practices and appliance 
efficiencies may result in increased energy conservation by 
customers. This can decrease our sales of natural gas and 
adversely affect our results of operations because revenues 
are collected mostly through volumetric rates, based on the 
amount of gas sold. In Oregon, we have a conservation 
tariff which is designed to recover lost utility margin due to 
declines in residential and commercial customers’ 
consumption. However, we do not have a conservation tariff 
in Washington that provides us this protection.

RELIANCE ON TECHNOLOGY RISK. Our efforts to integrate, 
consolidate and streamline our operations have resulted in 
increased reliance on technology, the failure or security 
breach of which could adversely affect our financial 
condition and results of operations.

17

Over the last several years we have undertaken a variety of 
initiatives to integrate, standardize, centralize and 
streamline our operations. These efforts have resulted in 
greater reliance on technological tools such as: an 
enterprise resource planning system, an automated 
dispatch system, an automated meter reading system, a 
customer information system, and other similar 
technological tools and initiatives. The failure of any of these 
or other similarly important technologies, or our inability to 
have these technologies supported, updated, expanded or 
integrated into other technologies, could adversely impact 
our operations. Additionally, our utility could experience 
breaches of security pertaining to sensitive customer, 
employee and vendor information maintained by the utility in 
the normal course of business which could adversely affect 
the utility’s reputation, diminish customer confidence, disrupt 
operations, and subject us to possible financial liability or 
increased regulation or litigation, any of which could 
adversely affect our financial condition and results of 
operations.

Furthermore, we rely on information technology systems in 
our operations of our distribution and storage operations. 
There are various risks associated with these systems, 
including, hardware and software failure, communications 
failure, data distortion or destruction, unauthorized access 
to data, misuse of proprietary or confidential data, 
unauthorized control through electronic means, 
programming mistakes and other inadvertent errors or 
deliberate human acts. In particular, cyber security attacks, 
terrorism or other malicious acts could damage, destroy or 
disrupt all of our business systems. Any failure of 
information technology systems could result in a loss of 
operating revenues, an increase in operating expenses and 
costs to repair or replace damaged assets. As these 
potential cyber security attacks become more common and 
sophisticated, we could be required to incur costs to 
strengthen our systems or obtain specific insurance 
coverage against potential losses.

Risks Related Primarily to Our Gas Storage 
Businesses
LONG-TERM LOW OR STABILIZATION OF GAS PRICE RISK. 
Any significant stabilization of natural gas prices or long-
term low gas prices could have a negative impact on the 
demand for our natural gas storage services, which could 
adversely affect our financial results.

Storage businesses benefit from price volatility, which 
impacts the level of demand for services and the rates that 
can be charged for storage services. On a system-wide 
basis, natural gas is typically injected into storage between 
April and October when natural gas prices are generally 
lower and withdrawn during the winter months of November 
through March when natural gas prices are typically higher. 
Largely due to the abundant supply of natural gas made 
available by hydraulic fracturing techniques, natural gas 
prices have dropped significantly to levels that are near 
historic lows. If prices and volatility remain low or decline 
further, then the demand for storage services, and the 
prices that we will be able to charge for those services, may 
decline or be depressed for a prolonged period of time. 
Prices below the costs to operate the storage facility could 
result in a decision to shut in all or a portion of the facility. A 
sustained decline in these prices or a shut-in of all or a 

18

portion of the facility could have an adverse impact on our 
financial condition, results of operations and cash flows.

NATURAL GAS STORAGE COMPETITION RISK. Increasing 
competition in the natural gas storage business could 
reduce the demand for our storage services and drive prices 
down for storage, which could adversely affect our financial 
condition, results of operation and cash flows.

Our natural gas storage segment competes primarily with 
other storage facilities and pipelines. Natural gas storage is 
an increasingly competitive business, with ongoing 
expansions and proposed construction of new storage 
capacity in California, the U.S. Rocky Mountains and 
elsewhere in the United States and Canada. Increased 
competition in the natural gas storage business could 
reduce the demand for our natural gas storage services, 
drive prices down for our storage business, and adversely 
affect our ability to renew or replace existing contracts at 
rates sufficient to maintain current revenues and cash flows, 
which could adversely affect our financial condition, results 
of operations and cash flows.

THIRD-PARTY PIPELINE RISK. Our gas storage businesses 
depends on third-party pipelines that connect our storage 
facilities to interstate pipelines, the failure or unavailability of 
which could adversely affect our financial condition, results 
of operations and cash flows.

Our gas storage facilities are reliant on the continued 
operation of a third-party pipeline and other facilities that 
provide delivery options to and from our storage facilities. 
Because we do not own all of these pipelines, their 
operation is not within our control. If the third-party pipeline 
to which we are connected were to become unavailable for 
current or future withdrawals or injections of natural gas due 
to repairs, damage to the infrastructure, lack of capacity or 
other reason, our ability to operate efficiently and satisfy our 
customers’ needs could be compromised, thereby 
potentially could have an adverse impact on our financial 
condition, results of operations and cash flows.

OPERATIONS AT NEW STORAGE FACILITY RISK. Operations 
at our new Gill Ranch storage facility involves numerous 
operational risks that may result in a failure to meet 
expectations or contractual obligations, additional or 
unexpected costs and other business risks that could 
adversely impact our financial condition, results of 
operations and cash flows.

In October 2010, we commenced operations at our Gill 
Ranch storage facility. Operations at a new storage facility 
involve many risks. Although we believe that Gill Ranch 
storage facility has been successfully completed to meet our 
contractual obligations and project specifications with 
respect to injection, withdrawal and gas specifications, the 
facility is new, and has a limited operating history. If we fail 
to inject or withdraw natural gas at the levels we expect or 
at contracted rates, or cannot deliver natural gas consistent 
with our expectations or contractual specifications, or 
otherwise operate as expected, or if operating costs are 
substantially higher than we expect or if we fail to control 
those costs, we may not be able to contract for storage at 
the levels and on the terms we expect, and we could incur 
higher than expected costs to satisfy our contractual 

obligations under contracts we obtain, and this could 
adversely impact our financial condition, results of 
operations and cash flows. 

ITEM 1B. UNRESOLVED STAFF COMMENTS

We have no unresolved comments.

ITEM 2. PROPERTIES

Utility Properties
Our natural gas pipeline system consists of approximately 
14,000 miles of distribution and transmission mains located 
in our service territory in Oregon and Washington. In 
addition, the pipeline system includes service pipelines, 
meters and regulators, and gas regulating and metering 
stations. Pipeline mains are located in municipal streets or 
alleys pursuant to franchise or occupation ordinances, in 
county roads or state highways pursuant to agreements or 
permits granted pursuant to statute, or on lands of others 
pursuant to easements obtained from the owners of such 
lands. We also hold permits for the crossing of numerous 
navigable waterways and smaller tributaries throughout our 
entire service territory.

We own service building facilities in Portland, as well as 
various satellite service centers, garages, warehouses and 
other buildings necessary and useful in the conduct of our 
business. We also lease office space in Portland for our 
corporate headquarters, which expires on May 31, 2018. 
Resource centers are maintained on owned or leased 
premises at convenient points in the distribution system to 
provide service within our utility service territory. We also 
own LNG storage facilities in Portland and near Newport, 
Oregon.

In order to reduce risks associated with gas leakage in older 
parts of our system, we undertook an accelerated pipe 
replacement program under which we removed and 
replaced 100% of our cast iron mains by the end of 2000. In 
2001, we initiated an accelerated pipe replacement program 
under which we expect to eliminate all remaining bare steel 
mains and services in the system by the end of 2015.

Gas Storage Properties 
We hold leases and other property interests in 
approximately 12,000 net acres of underground natural gas 
storage in Oregon and approximately 5,000 net acres of 
underground natural gas storage in California, and 
easements and other property interests related to pipelines 
associated with those facilities. We own rights to depleted 
gas reservoirs near Mist, Oregon, that are continuing to be 
developed and operated as underground gas storage 
facilities. We also hold an option to purchase future storage 
rights in certain other areas of the Mist gas field in Oregon, 
as well as in California related to the Gill Ranch storage 
project.

We consider all of our properties currently used in our 
operations, both owned and leased, to be well maintained, 
in good operating condition, and, along with planned 
additions, adequate for our present and foreseeable future 
needs.

Our Mortgage and Deed of Trust (Mortgage) is a first 
mortgage lien on substantially all of the property constituting 
our utility plant.

ITEM 3. LEGAL PROCEEDINGS
Other than the proceedings disclosed in Note 15 and as 
discussed below, we have only nonmaterial litigation in the 
ordinary course of business.

In December 2010, NW Natural commenced litigation 
against certain of its historical liability insurers in Multnomah 
County Circuit Court, State of Oregon, Case Number 
1012-17532. The defendants include Associated Electric & 
Gas Insurance Services Limited, Allianz Global Risk US 
Insurance Company, certain underwriters at Lloyd's London, 
certain London market insurance companies and 10 other 
insurance companies. In the suit, NW Natural alleged that 
the defendant insurance companies issued third party 
liability insurance policies to NW Natural and that the 
defendants had breached the terms of those policies by 
failing to reimburse and indemnify NW Natural for liabilities 
arising from environmental contamination at certain sites 
caused or alleged to be caused by its historical operations. 

NW Natural sought damages in excess of $50 million in 
losses it had incurred through the date of the complaint, as 
well as declaratory relief for additional damages it expected 
to incur in the future. Settlements with certain of the 
defendant insurance companies resulted in payments 
received by NW Natural through December 31, 2013 of 
approximately $48 million. 

In January and February 2014, the remaining defendant 
insurance companies agreed to settle all of NW Natural’s 
claims for insurance recovery for past and future 
environmental remediation expenses. In 2014 the Company 
expects to receive additional payments aggregating 
approximately $102 million under these settlement 
agreements signed in 2013 and 2014. Such payments are 
to be made in the first and second quarters of 2014. As a 
result of such settlements, the Company anticipates 
dismissal of the litigation in the second quarter of 2014. See 
Note 17.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

19

 
  
  
 
 
  
PART II

ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS 
AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is listed and trades on the New York Stock Exchange under the symbol NWN.

The high and low closing trades for our common stock during the past two years were as follows:

Quarter Ended

March 31

June 30

September 30

December 31

2013

2012

High

Low

High

Low

$

46.55

$

43.40

$

49.49

$

45.89

45.15

44.35

41.17

39.96

40.75

48.56

50.16

50.80

44.40

43.90

46.04

41.01

The closing quotations for our common stock on December 31, 2013 and 2012 were $42.82 and $44.20, respectively. 

As of February 21, 2014, there were 6,178 holders of record of our common stock.

We have paid quarterly dividends on our common stock in each year since the stock first was issued to the public in 1951. 
Annual common dividend payments per share, adjusted for stock splits, have increased each year since 1956. Dividends per 
share paid during the past two years were as follows:

Payment Date

February 15

May 15

August 15

November 15

Total per share

2013

2012

$

$

0.455

$

0.455

0.455

0.460

1.825

$

0.445

0.445

0.445

0.455

1.790

The declaration and amount of future dividends depend upon our earnings, cash flows, financial condition and other factors. The 
amount and timing of dividends payable on our common stock are within the sole discretion of our Board of Directors. Subject to 
Board approval, we expect to continue paying cash dividends on our common stock on a quarterly basis. 

The following table provides information about purchases of our equity securities that are registered pursuant to Section 12 of 
the Securities Exchange Act of 1934 during the quarter ended December 31, 2013:

Period

Balance forward

10/01/13-10/31/13

11/01/13-11/30/13

12/01/13-12/31/13

Total

Issuer Purchases of Equity Securities

Total Number
of Shares Purchased(1)

Average
Price Paid per Share

Total Number of Shares
Purchased as Part of
Publicly Announced 
Plans or Programs(2)

Maximum Dollar Value of
Shares that May Yet Be
Purchased Under the 
Plans or Programs(2)

2,124,528

$

16,732,648

— $

3,406

231

3,637

$

—

42.31

43.16

42.37

—

—

—

—

—

—

2,124,528

$

16,732,648

(1)  During the quarter ended December 31, 2013, 3,637 shares of our common stock were purchased on the open market to meet the 

requirements of our share-based programs. During the quarter ended December 31, 2013, no shares of our common stock were accepted 
as payment for stock option exercises pursuant to our Restated SOP.

(2)  We have a common stock share repurchase program under which we purchase shares on the open market or through privately negotiated 
transactions. We currently have Board authorization through May 31, 2014 to repurchase up to an aggregate of 2.8 million shares or up to 
an aggregate of $100 million. During the quarter ended December 31, 2013, no shares of our common stock were repurchased pursuant to 
this program. Since the program’s inception in 2000, we have repurchased approximately 2.1 million shares of common stock at a total cost 
of approximately $83.3 million.

20

 
  
 
 
 
ITEM 6. SELECTED FINANCIAL DATA

In thousands, except share data
Operating revenues(1)
Net income(1)

2013

2012

2011

2010

2009

$

758,518

$

730,607

$

828,055

$

792,115

$

988,055

60,538

58,779

63,044

72,013

74,632

For the year ended December 31,

Earnings per share of common stock:
Basic(1)
Diluted(1)

Dividends paid per share of common stock

$

2.24

$

2.19

$

2.36

$

2.71

$

2.24

1.83

2.18

1.79

2.36

1.75

2.70

1.68

2.82

2.81

1.60

Total assets, end of period(1)
Total equity(1)

Long-term debt

$

2,970,911

$

2,813,120

$

2,742,718

$

2,614,172

$

2,397,890

751,872

681,700

729,627

691,700

712,158

641,700

691,625

591,700

659,283

601,700

(1) Prior period balances have been adjusted for a prior period error identified during the first quarter of 2013. See Note 16 for additional detail.

21

 
 
 
 
 
EXECUTIVE SUMMARY

During 2013 we continued to advance our long-term 
strategic directives. Highlights for the year include:
• 

increased customer count with close to 9,000 net 
customer additions for an annual customer growth rate 
of 1.3%;
developed new online tools for customers to compare 
energy cost and service options;
ranked number one in J.D. Power customer service 
survey among large gas utilities in the West;
pursued gas storage development opportunities at our 
Mist gas storage facility;
completed construction of a new operations service 
center, which also serves as a back-up business 
continuity center, and industry leading training facility;
completed construction of a new water treatment 
station at our Gasco site; and
received regulatory approval for an increased spending 
limit for our annual system integrity cap-ex tracker, 
which supports our safety investments. 

We manage our business and strategic initiatives with a 
long-term view on providing natural gas service safely and 
conveniently to our customers, working with regulators on 
key policy initiatives, and remaining focused on growing our 
business. See "2014 Outlook" below for more information. 

Key financial highlights include:

In millions, except per
share data
Consolidated net income

Consolidated EPS

Utility margin

2013

2012

2011

$

60.5

$

58.8

$

2.24

353.9

2.18

344.5

63.0

2.36

343.0

Results for 2013: 
• 

net income and EPS increased primarily due to higher 
utility margin in 2013 and a one-time tax charge taken 
in 2012;
gas storage net income increased primarily due to 
higher asset management revenues and lower 
operating costs; and
utility margin increased primarily due to customer 
growth and higher rate-base return on our gas reserve 
and other investments. 

See "Consolidated Earnings and Dividends" below for 
additional detail.

• 

• 

• 

• 

• 

• 

• 

• 

ITEM 7. MANAGEMENT'S DISCUSSION AND 
ANALYSIS OF FINANCIAL CONDITION AND 
RESULTS OF OPERATIONS

The following is management’s assessment of Northwest 
Natural Gas Company’s (NW Natural or the Company) 
financial condition, including the principal factors that affect 
results of operations. The discussion refers to our 
consolidated results for the years ended December 31, 
2013, 2012, and 2011. References in this discussion to 
"Notes" are the Notes to Consolidated Financial Statements 
in Item 8 of this report.

The consolidated financial statements include NW Natural 
and its direct and indirect wholly-owned subsidiaries which 
include: 
•  NW Natural Energy, LLC (NWN Energy), 
•  NW Natural Gas Storage, LLC (NWN Gas Storage),
•  Gill Ranch Storage, LLC (Gill Ranch), 
•  NNG Financial Corporation (NNG Financial),
•  Northwest Energy Corporation (Energy Corp), and
•  NW Natural Gas Reserves, LLC (NWN Gas Reserves).

We operate in two primary reportable business segments, 
local gas distribution and gas storage. We also have other 
investments and business activities not specifically related 
to one of these two reporting segments, which we 
aggregate and report as other. We refer to our local gas 
distribution business as the utility, and our gas storage 
segment and other as non-utility. Our utility segment 
includes our NW Natural local gas distribution
business, NWN Gas Reserves, which is a wholly-owned 
subsidiary of Energy Corp, and the utility portion of our
Mist underground storage facility in Oregon (Mist). Our gas 
storage segment includes NWN Gas Storage, which is a
wholly-owned subsidiary of NWN Energy, Gill Ranch, which 
is a wholly-owned subsidiary of NWN Gas Storage, the non-
utility portion of Mist, and asset management services. 
Other includes NWN Energy's equity investment in Palomar 
Gas Holdings, LLC (PGH), which is pursuing the 
development of a proposed natural gas pipeline through its 
wholly-owned subsidiary, Palomar Gas Transmission, LLC 
(Palomar), and NNG Financial's equity investment in Kelso-
Beaver Pipeline (KB Pipeline). For a further discussion of 
our business segments and other, see Note 4.

In addition to presenting results of operations and earnings 
amounts in total, certain financial measures are expressed 
in cents per share, which are non-GAAP financial 
measures. These amounts reflect factors that directly 
impact earnings. In calculating these financial disclosures, 
we allocate income tax expense based on the effective tax 
rate, where applicable. All references in this section to 
earnings per share (EPS) are on the basis of diluted shares. 
We use such non-GAAP measures in analyzing our 
financial performance because we believe they provide 
useful information to our investors and creditors in 
evaluating our financial condition and results of operations.

22

 
  
2014 OUTLOOK

We are focused on the long-term strategic goals for our business: delivering safe and reliable gas to our customers and growing 
our gas distribution and gas storage businesses. We believe our 2014 outlook leverages our resources and our history of 
innovative solutions to continue meeting the needs of customers, regulators, and shareholders. We consider the following 
components critical in achieving these long term goals:   

Deliver Gas

Ensure Safety and Reliability

Advance Regulatory Dockets and Policy

Collaborate on Regulatory Energy Policies

Grow Our Businesses

Grow Customer Base

Pursue Key Initiatives

Develop New Services

SAFETY AND RELIABILITY. Delivering natural gas safely and 
reliably to our customers and providing employees with a 
safe work environment are our top priorities. During 2014, 
we will continue ensuring our pipeline system and facilities 
are well maintained with ongoing facility improvements and 
additional investments in our system integrity program. We 
plan to continue removing the bare steel pipe in our system 
with complete removal targeted by the end of 2015. We are 
preparing for new regulations from the U.S. Department of 
Transportation’s Pipeline and Hazardous Materials Safety 
Administration (PHMSA) that are expected to be issued in 
2015 with a projected effective date of 2016.

Reliability of our system and delivering to our customers on 
design days is a key priority. In 2014, we plan to file our 
integrated resource plan with the OPUC and WUTC. This 
plan will help to define the required infrastructure 
improvements and expansions necessary to provide safe 
and reliable gas service to our customers.

REGULATION. Proper regulatory policies and support from 
our regulators helps ensure the utility can continue to 
effectively deliver gas to customers and earn a reasonable 
return for shareholders. During 2014, we plan to resolve 
open dockets from our 2012 Oregon general rate case, 
which include: a review of the interstate storage sharing 
arrangement; the implementation of our new SRRM; and 
the development of appropriate rate treatment for prepaid 
pension assets in rate base. In addition to these dockets, 
we plan to work closely with regulators to create an 
incentive mechanism for gas utilities to reduce greenhouse 
gas emissions.

ENERGY POLICIES. The Company is strengthened by 
innovatively addressing the needs of our customers, 
employees, and the communities we serve in a challenging 
economic and regulatory environment. In 2014, we will 
continue to work with state legislators to help build a strong 
energy plan for Oregon. In addition, we remain committed to 
working with environmental agencies to make significant 
progress towards remediation of our legacy environmental 
sites.

GROW CUSTOMER BASE. In the utility, we continue to 
leverage our resources to provide natural gas services to 
our residential, commercial, and industrial customers. We 
are beginning to see signs of improvement in the housing 
market and commercial development in our region and are 
committed to growing our customer base. We plan to 
investigate ways of potentially expanding the reach of our 
current distribution system, including development of new 
self-service online capabilities for builders, contractors, and 
homeowners. In our gas storage business, we will focus on 
maximizing the value of our storage capacity and optimizing 
revenue opportunities as they arise, while recognizing the 
unique challenges that currently low, seasonally stable 
natural gas prices bring to the storage market. 

We believe that investing in operating efficiencies and 
marketing opportunities for our core businesses best 
positions us for growth now and into the future.

KEY INITIATIVES. Increasing gas usage in our region is likely 
to require additional infrastructure locally as well as through 
new connections to gas supplies. Our utility operations and 
gas storage operations at Mist currently depend on a single 
bi-directional interstate transmission pipeline to transport 
gas supplies to customers. We continue to work with 
regulators and utilities in the Pacific Northwest to advance a 
new integrated, regional cross-Cascades pipeline to create 
regional diversity and increased reliability for our system. 
The need for new connections to gas supply increases as 
additional, potential large electric load generation and 
industrial projects are sited within the region.

The need for new flexible gas-fired electric generation has 
been identified in the Pacific Northwest region to integrate 
intermittent wind resources into the power system. Natural 
gas complements wind and solar renewable energy options 
as a reliable, on-call, electric generation resource. We 
believe natural gas storage for wind following electric 
generation plants is needed, and we are working on 
opportunities to expand our Mist storage facility to support 
an announced gas fired plant being built by Portland 
General Electric (PGE) at Port Westward, Oregon to follow 
wind. The Mist expansion project is subject to several 
conditions, including, but not limited to, PGE's approval of 
projected costs. 

NEW UTILITY SERVICES. We are currently working to provide 
the infrastructure necessary to support compressed natural 
gas (CNG) fleets, and are monitoring the new legislation 
expected during 2014 that may support natural gas projects 
such as conversions to natural gas, heavy-duty vehicle 
conversions to CNG, and industrial projects.

23

Issues, Challenges and Performance Measures 
ECONOMY. The local, national, and global economies 
showed signs of improvement during 2013. We saw 
increased utility customer growth and business demand for 
natural gas. Our utility’s customer growth rate was 1.3% in 
2013, compared to growth of 0.9% in 2012 and 0.8% in 
2011. The local Oregon economy is beginning to show signs 
of recovery as unemployment rates in the region dropped 
from approximately 8% in 2012 to under 7% at the end of 
2013. We believe our utility is well positioned for continued 
customer additions and increasing industrial demand as the 
economy continues to strengthen because of low, stable 
natural gas prices, our relatively low market penetration, 
and our ongoing marketing focus of converting homes and 
businesses to natural gas. Additional growth may also come 
with increased industrial load from new projects in the 
region and proposed legislation that favors lower carbon 
emissions and lower cost energy alternatives, such as 
natural gas. Our gas storage business is also impacted by 
the employment trends throughout the West coast, including 
California, which was among the hardest hit during the 
recession, but is experiencing lower unemployment levels in 
2013 and improvements in housing prices. 

GAS PRICES AND SUPPLIES. Our gas acquisition strategy is 
to secure sufficient supplies of natural gas to meet the 
needs of our utility customers and to hedge gas prices so 
we can effectively manage costs, reduce price volatility, and 
maintain a competitive price advantage. With recent 
developments in drilling technologies and the abundance of 
shale development around the U.S. and in Canada, the 
current outlook for North American natural gas supply is 
strong and is projected to remain this way well into the 
future. This projection is dependent upon a combination of 
supply outlook and demand factors as well as a regulatory 
environment that continues to support hydraulic fracturing 
and other drilling technologies.

Our utility's annual PGA mechanisms in Oregon and 
Washington, combined with our gas price hedging 
strategies, enable us to reduce earnings exposure for the 
Company and secure lower gas costs for our customers. 
We typically hedge gas prices on 75% of our utility's annual 
sales requirement based on normal weather, including both 
physical and financial hedges. We entered the 2013-14 gas 
year (November 1, 2013 - October 31, 2014) hedged at 
75% of our forecasted sales volumes, including 31% in 
financial swap and option contracts and 44% in physical gas 
supplies. For further discussion see "Regulatory Matters—
Rate Mechanisms—Purchased Gas Adjustment" below.

In addition to the amount hedged for the current gas 
contract year, we are also hedged at approximately 33% for 
the 2014-15 gas year as of December 31, 2013 and 
between 7% and 21% for annual requirements over the 
following five gas years. Our hedge levels are subject to 
change based on actual load volumes, which depend to a 
certain extent on weather and economic conditions, and 
estimated gas reserve production. Also, our storage 
inventory levels may increase or decrease based on storage 
expansion, storage contracts with third parties, or storage 
recall by the utility. 

Although less expensive and more stable gas prices provide 
opportunities to manage costs for our utility customers, they 
also present challenges for our gas storage businesses by 
lowering the price of, and reducing the demand for, storage 
services. Consequently, our ability to sign storage contracts 
with customers at favorable prices directly impacts our 
financial results. Increases in demand for natural gas, or 
decreases in supplies can put upward pressure on gas 
prices and gas price volatility. Similarly, decreases in 
demand and increases in supplies can cause downward 
pressure on gas prices and gas price volatility. Current 
storage prices remain low due to current low stable gas 
prices; as a result, in the short-term we are focused on 
lowering operating costs and finding opportunities in the 
market to increase revenues through enhanced services for 
storage customers.   

ENVIRONMENTAL COSTS. We accrue all material 
environmental loss contingencies related to environmental 
sites for which we are responsible. Due to numerous 
uncertainties surrounding the nature of environmental 
investigations and the approval of proposed remediation 
solutions by regulatory agencies, actual costs could vary 
significantly from our loss estimates. As a regulated utility, 
we have been allowed to defer certain costs pursuant to 
regulatory orders. In our general rate case, the OPUC 
approved our recovery of environmental costs from 
investigation and site remediation subject to certain 
conditions as noted in "Results of Operations—Regulatory 
Matters—Rate Mechanisms" below. 

We also recover some of our environmental costs from 
insurance policies and only seek recovery from customers 
for amounts not covered by insurance. Ultimate recovery of 
environmental costs from regulated utility rates will depend 
on our ability to effectively manage these costs and 
demonstrate that costs were prudently incurred, and 
understand the impact of the annual earnings test in 
Oregon. Environmental cost recovery and carrying charges 
on amounts charged to Washington customers will be 
determined in a future proceeding. 

CLIMATE CHANGE. We recognize that we are likely to be 
impacted by future carbon constraints. To address possible 
constraints, we are seeking clean energy growth 
opportunities that position us for long-term success in a 
lower carbon energy economy and to advance our 
customers’ interests in energy conservation, efficiency and 
environmental stewardship. A variety of federal, state, local 
and international climate change initiatives, including new 
regulations, are underway, but we cannot determine the 
impact of these initiatives at this time. For example, an array 
of Environmental Protection Agency (EPA) rules impacting 
coal plants has driven some coal plants to shut down early 
although the EPA is not mandating coal plant closures. Coal 
plant shut downs could increase the demand for natural gas 
as a lower carbon emission fuel and create opportunities for 
us. Similarly, because natural gas has a relatively low 
carbon content, it is also possible that future carbon 
constraints could create additional demand for natural gas 
for base load electric generation, direct use in homes and 
businesses, backing up intermittent renewable resources, 
and as a transportation fuel to displace gasoline and diesel 
fuels. 

24

 
As required under EPA greenhouse gas regulations, we 
annually report our system throughput and unintended 
greenhouse gas releases. While our carbon dioxide 
equivalent emission levels are relatively small, the adoption 
and implementation of any regulations imposing reporting 
obligations, or limiting emissions of greenhouse gases 
associated with our operations, could result in an increase 
in the prices we charge our customers or a decline in the 
demand for natural gas.

PERFORMANCE MEASURES. We measure our performance 
and monitor progress on relevant metrics including, but not 
limited to:
• 
• 
•  ROE; and
• 

earnings per share growth;
utility margin;

various operational metrics.

CONSOLIDATED EARNINGS AND DIVIDENDS

Consolidated Earnings
Consolidated highlights include:

In millions, except EPS
data

Net income

EPS

ROE

2013

2012

2011

$

60.5

2.24

$

58.8

2.18

$

63.0

2.36

8.2%

8.2%

9.0%

• 

• 

2012 COMPARED TO 2011. The most significant factors 
contributing to the $4.3 million decrease in consolidated net 
income were:
• 

a $4.1 million increase in operations and maintenance 
expense primarily due to increases in utility payroll and 
employee benefit costs, utility training costs, and utility 
expenses related to our Oregon general rate case;
a $3.0 million increase in depreciation and amortization 
expenses primarily due to higher levels of investment in 
property, plant, and equipment at the utility; and
a $2.7 million after-tax charge to income tax expense 
related to a regulatory disallowance from the Oregon 
general rate case. 

• 

• 

Partially offsetting the above factors were:
• 

a $1.6 million increase in utility margin primarily due to 
a $7.4 million net charge in 2011 results related to a 
utility tax law change in Oregon  as well as residential 
and commercial customer growth, partially offset by a 
decrease in margin primarily due to timing differences 
from the new billing rate structure resulting from the 
Oregon general rate case and the effects of warmer 
weather;
a $4.1 million increase in gas storage operating income 
primarily attributable to revenue increases from 
additional contracted storage capacity at Gill Ranch, 
partially offset by $2.8 million increase in interest 
expense due to the full year impact of Gill Ranch notes; 
and
a $0.9 million increase in net income from our other 
non-utility businesses.

2013 COMPARED TO 2012. The primary factors contributing 
to the $1.8 million increase in consolidated net income 
were:
• 

a $9.4 million increase in utility margin primarily due to 
customer growth and the rate-base return on our gas 
reserve and other investments; and
a $2.7 million after-tax charge taken in 2012 from an 
Oregon general rate case disallowance. 

• 

Partially offsetting the above factors were:
• 

a $7.1 million increase in operations and maintenance 
expense primarily due to increased utility payroll and 
system maintenance and safety program costs; and
a $2.9 million increase in depreciation and amortization 
expenses primarily due to higher levels of investment in 
property, plant, and equipment at the utility.

• 

Dividends
Dividend highlights include:  

Per common share

Dividends paid

2013

2012

2011

$

1.83

$

1.79

$

1.75

The Board of Directors declared a quarterly dividend on our 
common stock of 46.0 cents per share, payable on February 
14, 2014, reflecting an indicated annual dividend rate of 
$1.84 per share.

25

RESULTS OF OPERATIONS

Regulatory Matters

Regulation and Rates 
UTILITY. Our utility business is subject to regulation by the 
OPUC, WUTC, and FERC with respect to, among other 
matters, rates and terms of service. The OPUC and WUTC 
also regulate the system of accounts and issuance of 
securities by our utility. In 2013, approximately 90% of our 
utility gas volumes and revenues were derived from Oregon 
customers, with the remaining 10% from Washington 
customers. Earnings and cash flows from utility operations 
are largely determined by rates set in general rate cases 
and other proceedings in Oregon and Washington, but are 
also affected by the local economies in Oregon and 
Washington, the pace of customer growth in the residential, 
commercial, and industrial markets, and our ability to remain 
price competitive, control expenses, and obtain reasonable 
and timely regulatory recovery of our utility-related costs, 
including operating expenses and investment costs in utility 
plant and other regulatory assets. See "Most Recent 
General Rate Cases" below.

GAS STORAGE. Our gas storage businesses are subject to 
regulation by the OPUC, CPUC, and FERC with respect to, 
among other matters, rates and terms of service. The 
OPUC and CPUC also regulate the issuance of securities 
and system of accounts. The OPUC and FERC regulate 
intrastate and interstate storage services, respectively, 
under a maximum cost of service model which allows for 
gas storage prices to be set at or below the cost of service 
as approved by each agency in the last regulatory filing. The 
CPUC regulates Gill Ranch under a market-based rate 
model which allows for the price of storage services to be 
set by the marketplace. In 2013, approximately 56% of our 
storage revenues were derived from FERC and Oregon 
regulated operations and approximately 44% from California 
operations.

Most Recent General Rate Cases  
OREGON. Effective November 1, 2012, the OPUC  
authorized rates to customers based on an ROE of 9.5%, 
an overall rate of return of 7.78%, and a capital structure of 
50% common equity and 50% long-term debt. 

WASHINGTON. In 2008, the WUTC authorized rates to 
customers based on an ROE of 10.1% and an overall rate 
of return of 8.4% with a capital structure of 51% common 
equity, 5% short-term debt, and 44% long-term debt. These 
customer rates went into effect on January 1, 2009.

FERC. We are required under our Mist interstate storage 
certificate authority and rate approval orders to file every 
five years either a petition for rate approval or a cost and 
revenue study to change or justify maintaining the existing 
rates for our interstate storage services. In December 2013 
we filed a rate petition, which was approved in 2014 and 
allows for the maximum cost-based rates for our interstate 
gas storage services. These rates are effective January 1, 
2014, with the rate changes having no significant impact on 
our revenues.

2013 Regulatory Activities  
WORKING GAS INVENTORY SETTLEMENT. On September 30, 
2013, the OPUC approved an all-party settlement 
agreement that allows the Company to include $39.5 million 
of inventory in rate base and recover $4.5 million in carrying 
costs. Previously, the Company had been accruing earnings 
of $4.0 million related to working gas carrying costs for 2013 
based on the amount of working gas inventory proposed in 
our 2012 general rate case. The carrying costs were 
included in PGA rates beginning November 1, 2013.

GASCO WATER TREATMENT STATION. On October 28, 2013, 
the OPUC approved placing $19.0 million of capital costs 
associated with constructing a water treatment station at our 
Gasco environmental site into rates beginning November 1, 
2013. These amounts are subject to refund, with interest, in 
the event the Commission determines, through a separate 
docket, that any of these costs were incurred imprudently. 
On February 13, 2014, NW Natural filed an all-party 
stipulation in the proceeding with the OPUC, which if 
approved, would deem Gasco construction costs prudent 
and would also approve applying $2.5 million of insurance 
proceeds plus interest to reduce the Gasco costs included 
in rates beginning November 1, 2014.

SITE REMEDIATION AND RECOVERY MECHANISM (SRRM). In 
the 2012 Oregon general rate case, this new mechanism 
was approved to recover the Company's deferred 
environmental costs. The Commission ordered a separate 
docket to determine the prudence of deferred costs, the 
allocation of insurance proceeds, and an earnings test that 
would be applied to past and future deferred costs. In July 
2013, all parties filed a settlement agreement with the 
OPUC to address how to apply the new mechanism. In 
November, the Commission rejected the settlement and 
ordered further proceedings. We have established a 
schedule for 2014 and are working toward resolving this 
matter.

INTERSTATE STORAGE SHARING. A docket has been 
opened to review the current revenue sharing arrangement 
that allocates a portion of the net revenues generated from 
non-utility Mist storage services and third-party asset 
management services to utility customers. We anticipate 
resolution of this docket in 2014.

PREPAID PENSION ASSETS. The Company requested in its 
last rate case that prepaid pension assets be included in 
rate base and allowed a return on the investment. A 
separate docket was ordered by the OPUC to review the 
rate treatment of pensions on a general, non-utility-specific 
basis. This pension docket is currently open and we 
anticipate resolution in 2014. The OPUC has authorized NW 
Natural to continue collecting pension expense based on 
the amounts set in our 2003 Oregon general rate case and 
to defer into a regulatory balancing account the difference 
between actual expense and collected expense for future 
rate recovery. We anticipate resolution of this docket in 
2014. 

CNG TARIFF APPROVED. In January 2014, we received 
approval from the OPUC to offer business customers a 
service to install, own, and maintain gas compression 
equipment that enables them to fuel their vehicle fleets with 
CNG. NW Natural filed the tariff in June 2013 after receiving 

26

 
requests from businesses interested in switching or 
increasing the number of their fleet vehicles fueled by CNG. 
Costs associated with providing this service will be directly 
paid by business customers using the service. The OPUC 
will review the tariff in two years to assess the market for 
CNG at that time.

Rate Mechanisms
PURCHASED GAS ADJUSTMENT. Rate changes are 
established for the utility each year under PGA mechanisms 
in Oregon and Washington to reflect changes in the 
expected cost of natural gas commodity purchases. This 
includes gas prices under spot purchases as well as 
contract supplies, gas prices hedged with financial 
derivatives, gas prices from the withdrawal of storage 
inventories, the production of gas reserves, interstate 
pipeline demand costs, a permanent rate adjustment for our 
SIP program, temporary rate adjustments, which amortize 
balances of deferred regulatory accounts, and the removal 
of temporary rate adjustments effective for the previous 
year.

In October 2013, the OPUC and WUTC authorized PGA 
rate changes effective November 1, 2013. The effect of 
these rate changes was an increase in the average monthly 
bills of both Oregon and Washington residential customers 
by 1.5%. This was the first rate increase in five years for 
both states, reflecting annual adjustments for changes in 
wholesale costs of natural gas as well as some additional 
changes to Oregon rate base.

Under the current PGA mechanism in Oregon, there is an 
incentive sharing provision whereby we are required to 
select each year either an 80% deferral or a 90% deferral of 
higher or lower actual gas costs compared to estimated 
PGA prices, such that the impact on current earnings from 
the incentive sharing is either 20% or 10% of the difference 
between actual and estimated gas costs, respectively. 
Under the Washington PGA mechanism, we defer 100% of 
the higher or lower actual gas costs, and those gas cost 
differences are normally passed on to customers through 
the annual PGA rate adjustment. 

EARNINGS TEST REVIEW. We are subject to an annual 
earnings review in Oregon to determine if the utility is 
earning above its authorized ROE threshold. If utility 
earnings exceed a specific ROE level, then 33% of the 
amount above that level is required to be deferred for refund 
to customers. Under this provision, if we select the 80% 
deferral option, then we retain all of our earnings up to 150 
basis points above the currently authorized ROE. If we 
select the 90% deferral option, then we retain all of our 
earnings up to 100 basis points above the currently 
authorized ROE. We selected the 90% deferral option for 
the 2011-2012, 2012-2013, and 2013-2014 PGA years. The 
ROE threshold is subject to adjustment annually based on 
movements in long-term interest rates. For calendar years 
2011 and 2012, the ROE threshold after adjustment for 
long-term interest rates was 10.92% for both years. We 
refunded $0.7 million to customers based on the 2011 utility 
earnings test, and there were no refunds required based on 
the 2012 utility earnings test. For calendar year 2013, the 
ROE threshold was 10.58% with no refund expected to be 
required based on our results of operations. The 2013 test 
is expected to be filed in May of 2014.

27

GAS RESERVES. In 2011 the OPUC approved the Encana 
gas reserve transaction to provide long-term gas price 
protection for our utility customers and determined that the 
Company's costs under the agreement will be recovered, 
plus a rate base return on our investment, on an ongoing 
basis through our annual PGA mechanism, including the 
regulatory deferral and incentive sharing process for the 
commodity cost of gas. Gas produced from our interests is 
sold by Encana at then prevailing market prices with 
revenues from such sales, net of associated production 
costs, credited to our cost of gas. Annually, a forecast is 
established for the amounts related to revenues, costs, and 
production volumes expected, and any variances between 
forecasted and actual results are subject to our PGA 
incentive sharing in Oregon.

DECOUPLING. Decoupling is intended to break the link 
between utility earnings and the quantity of gas consumed 
by customers, removing any financial incentive by the utility 
to discourage customers’ efforts to conserve energy.

The Oregon decoupling mechanism was reauthorized in the 
Oregon general rate case with the difference between our 
2003 baseline consumption and the consumption decided in 
our 2012 general rate case being calculated within base 
rates. This employs a use-per-customer decoupling 
mechanism, which adjusts margin revenues to account for 
the difference between actual and expected customer 
volumes. The margin adjustment resulting from differences 
between actual and expected volumes under the decoupling 
component is recorded to a deferral account, which is 
included in the annual PGA filing. Baseline consumption 
reflects forecasted customer consumption data used in the 
Oregon general rate case. In Washington, customer use is 
not covered by such a tariff. See "Business Segments—
Local Gas Distribution Utility Operations" below.

WEATHER NORMALIZATION TARIFF. In Oregon, we have an 
approved weather normalization mechanism, which is 
applied to residential and commercial customer bills. This 
mechanism is designed to help stabilize the collection of 
fixed costs by adjusting residential and commercial 
customer billings based on temperature variances from 
average weather, with rate decreases when the weather is 
colder than average and rate increases when the weather is 
warmer than average. The mechanism is applied to bills 
from December through May of each heating season. The 
mechanism adjusts the margin component of customers’ 
rates to reflect average weather, which uses the 25-year 
average temperature for each day of the billing period. Daily 
average temperatures and 25-year average temperatures 
are based on a set point temperature of 59 degrees 
Fahrenheit for residential customers and 58 degrees 
Fahrenheit for commercial customers. This weather 
normalization mechanism was reauthorized in the 2012 
Oregon general rate case without an expiration date. 
Residential and commercial customers in Oregon are 
allowed to opt out of the weather normalization mechanism, 
and as of December 31, 2013, 8% had opted out. We do not 
have a weather normalization mechanism approved for 
residential and commercial Washington customers, which 
account for about 10% of total customers. See "Business 
Segments—Local Gas Distribution Utility Operations" below.

 
 
INDUSTRIAL TARIFFS. The OPUC and WUTC have 
approved tariffs covering utility service to our major 
industrial customers, including terms which are intended to 
give us certainty in the level of gas supplies we need to 
acquire to serve this customer group. The terms include, 
among other things, an annual election period, special 
pricing provisions for out-of-cycle changes, and a 
requirement that industrial customers under our annual PGA 
tariff complete the term of their service election.

SYSTEM INTEGRITY PROGRAM (SIP). Since 2002, various 
laws requiring minimum standards for integrity management 
programs and SIPs for natural gas transmission and 
distribution pipelines have been enacted. Most recently, in 
January 2012 the Pipeline Safety, Regulatory Certainty, and 
Job Creation Act of 2011 was signed into law and requires 
increased civil penalties for pipeline safety violations, 
improvements in prevention programs for pipelines, and 
additional review and analysis of various aspects of gas 
transmission lines. We are working diligently with industry 
associations and federal and state regulators to ensure our 
compliance with the provisions of this new law. 

The OPUC approved specific accounting treatment and cost 
recovery for our transmission pipeline integrity management 
program, our SIP, and for related pipeline safety rules 
adopted by the U.S. Department of Transportation’s 
PHMSA. In addition, the OPUC has provided a two-year 
extension beginning in November 2012 of our capital 
expenditure tracking mechanism to recover capital costs 
related to SIP. We record the costs related to the integrity 
management program as either capital expenditures or 
regulatory assets, accumulate the costs over each 12-
month period, and recover the revenue requirement 
associated with these costs, subject to audit, through rate 
changes effective with the Oregon annual PGA. Our SIP 
costs are tracked into rates annually, with rate base 
recovery after the first $4 million of capital costs. An annual 
cap for expenditures has been set at $12 million, but 
extraordinary costs above the cap may be approved with 
written consent of the OPUC staff and other interested 
parties and approval of the OPUC. During 2013, the 
Commission approved a temporary increase to the annual 
cap, authorizing an additional $13.7 million of expenditures  
above the cap over the next two years to be tracked into 
rates. With the increased cap, we plan to substantially 
complete our bare steel replacement by the end of 2015, 
and as a result this stipulation precludes us from tracking 
any additional bare steel replacement costs into rates after 
2015. We do not have any special accounting or rate 
treatment for our SIP costs incurred in the state of 
Washington.

ENVIRONMENTAL COST DEFERRAL. The OPUC has 
authorized the deferral of environmental costs associated 
with certain named sites and to accrue carrying costs on 
amounts deferred, subject to an annual demonstration that 
we have maximized our insurance recovery or made 
substantial progress in securing insurance recovery for 
unrecovered environmental expenses. Through a series of 
extensions, the OPUC has authorized us to defer 
environmental costs and accrued carrying costs through 
January 2014. We filed a request with the OPUC in January 
2014 to continue our deferral of costs through January 
2015. See Note 15 and 17 for further discussion of our 

28

regulatory and insurance recovery of environmental costs 
and "2013 Regulatory Activities" above for information 
regarding SRRM.

The WUTC also authorized the deferral of environmental 
costs, if any, that are appropriately allocated to Washington 
customers. This order was effective January 26, 2011 with 
cost recovery and a carrying charge to be determined in a 
future proceeding. 

PENSION COST DEFERRAL. Effective January 1, 2011, the 
OPUC approved our request to defer annual pension 
expenses above the amount set in rates, with recovery of 
these deferred amounts through the implementation of a 
balancing account, which includes the expectation of higher 
and lower pension expenses in future years. Our recovery 
of these deferred balances includes accrued interest on the 
account balance at the utility’s authorized rate of return, 
which is currently 7.78%. Future years’ deferrals will depend 
on changes in plan assets and projected benefit liabilities 
based on a number of key assumptions, and our pension 
contributions. Pension expense deferrals were $9.1 million 
and $7.9 million in 2013 and 2012, respectively. See 
"Application of Critical Accounting Policies and Estimates", 
below. As noted above, the Company continues to seek rate 
treatment for amounts invested in prepaid pension assets.

CUSTOMER CREDITS FOR GAS STORAGE SHARING. On an 
annual basis, we credit amounts to Oregon and Washington 
customers as part of our regulatory incentive sharing 
mechanism related to revenues from gas storage and asset 
management of pipeline capacity and gas storage at Mist. 
Generally amounts are credited to Oregon customers in 
June, while credits are given to customers in Washington 
through reductions in rates in the annual PGA filing in 
November. See "Business Segments—Gas Storage" below.

The following table presents the credits to customers: 

In millions

Oregon utility
customer credit

Washington utility
customer credit

2013

2012

2011

$

8.8

$

9.2

$

12.5

0.5

0.8

0.9

Business Segments - Local Gas Distribution Utility 
Operations
Our utility margin results are largely affected by customer 
growth and, to a certain extent, by changes in volume due 
to weather and customers’ gas usage patterns. In Oregon, 
we have a conservation tariff, which adjusts utility margin up 
or down through deferred accounting to offset changes 
resulting from increases or decreases in average use by 
residential and commercial customers. We also have a 
weather normalization tariff in Oregon, which adjusts 
customer bills up or down to offset changes in utility margin 
resulting from above- or below-average temperatures during 
the winter heating season. Both mechanisms are designed 
to reduce the volatility of our utility’s earnings and customer 
charges. See "Regulatory Matters—Rate Mechanisms" 
above. 

  
 
                                                                                                                 
Utility segment highlights include:  

Dollars and therms in
millions, except EPS data

2013

2012

2011

Utility net income

$

54.9

$

54.0

$

EPS - utility segment

2.03

2.01

59.7

2.23

Gas sold and delivered
(in therms)
Utility margin(1)

1,146

1,112

1,152

$

353.9

$

344.5

$

343.0

(1) See Utility Margin Table below for a reconciliation and additional 
detail. 

• 

2013 COMPARED TO 2012. The primary factors contributing 
to the $0.9 million or $0.02 per share increase in net income 
were as follows:
• 

a $9.4 million net increase in utility margin primarily due 
to:

a $10.8 million increase related to customer growth 
and the rate-base return on our gas reserve and 
other investments, such as our pipeline integrity 
tracker; and
a $3.9 million increase related to the timing 
impacts of changes in fixed monthly charges and 
decoupling baselines in the 2012 Oregon general 
rate case. As a result of changes to the decoupling 
baseline for average use per customer included in 
the 2012 rate case, the decoupling mechanism's 
results this year will not be comparable to last year, 
although the overall impact on revenues will 
generally be the same on an annualized basis.
These increases in margin were partially offset by:
a $3.9 million decrease in gains from gas cost 
incentive sharing due to actual gas prices that 
were roughly equivalent to estimated PGA prices 
for the current year as compared to actual gas 
prices that were lower than estimated PGA prices 
for the prior year; and
a $1.4 million decrease primarily related to the 
lower Oregon Authorized ROE of 9.5% from the 
2012 general rate case.

a $1.5 million increase in other income and expense, 
net primarily due to interest on higher average 
regulatory account balances; and
a $2.7 million one-time tax charge taken in 2012 from 
an Oregon general rate case disallowance. See 
"Application of Critical Accounting Policies and 
Estimates—Regulatory Accounting" below. 

These factors were partially offset by:
a $7.4 increase in operations and maintenance 
expense primarily due to increased utility payroll and 
system maintenance and safety program costs; 
a $2.9 million increase in depreciation and amortization 
expense primarily due to a higher level of investment in 
utility property, plant, and equipment; and
a $2.4 million increase in interest expense primarily due 
to increases in long-term debt outstanding.

• 

• 

• 

• 

• 

Total utility volumes sold and delivered in 2013 increased 
3.1% over last year primarily due to the impact of colder 
weather on residential and commercial use. 

2012 COMPARED TO 2011. The primary factors contributing 
to the $5.6 million or $0.22 per share decrease in net 
income were as follows:
• 

an $8.4 million increase in operating expenses, 
excluding cost of gas, primarily due to higher 
operations and maintenance expense and depreciation 
and amortization expense; and 
a $2.7 million one-time tax charge related to the 
Oregon general rate case. See "Application of Critical 
Accounting Policies and Estimates—Regulatory 
Accounting" below. 

These factors were partially offset by:
• 

a $1.6 million net increase in utility margin primarily due 
to:

a $7.4 million one-time, pre-tax charge in 2011 
related to the repeal of Senate Bill (SB) 408, which 
did not reoccur in 2012;
a 0.9% increase in customers over last year;
a $3.4 million increase from the allowed return on 
our gas reserves investment;
a $2.5 million increase in other margin 
adjustments; and
a $1.7 million increase in contribution from our gas 
cost incentive sharing mechanism.

These increases in margin were partially offset by a 
$9.3 million decrease in our residential and commercial 
margin primarily reflecting:

a $3.9 million decrease due to timing differences 
from the new billing rate structure resulting from 
the Oregon general rate case;
an $8.4 million decrease due to weather from the 
following three items: (1) positive margin impact 
realized in the second quarter of 2011 when colder 
weather was not fully offset by our Oregon weather 
normalization mechanism, (2) warmer weather 
during 2012 in Washington, which does not have 
normalization mechanisms in place, and  (3) the 
effect of warmer weather on margin for Oregon 
customers that opt out of weather normalization; 
and
a $0.5 million decrease in operating revenues 
primarily due to rate case impacts including a 
decrease in our authorized ROE.

• 

• 

a $1.5 million decrease in utility interest expense due to 
lower interest rates on both short-term and long-term 
debt balances.
a $3.5 million decrease, excluding the $2.7 million one-
time tax charge mentioned above, in income taxes due 
to lower pre-tax utility income.

Total utility volumes sold and delivered in 2012 decreased 
3.5% over last year primarily due to the impact of warmer 
weather on residential and commercial use. 

29

 
 
 
 
 
 
 
 
UTILITY MARGIN TABLE. The following table summarizes the composition of utility gas volumes, revenues, and cost of sales: 

In thousands, except degree day and customer data

2013

2012

2011

Favorable/(Unfavorable)

2013 vs.
2012

2012 vs.
2011

Utility volumes (therms):

Residential and commercial sales

Industrial sales and transportation

671,906

474,525

637,885

473,884

681,621

470,733

34,021

(43,736)

641

3,151

Total utility volumes sold and delivered

1,146,431

1,111,769

1,152,354

34,662

(40,585)

Utility operating revenues:

Residential and commercial sales

Industrial sales and transportation
Regulatory adjustment for income taxes paid(1)

Other revenues

Less: Revenue taxes

Total utility operating revenues

Less: Cost of gas

Utility margin

Utility margin:(2)

Residential and commercial sales

Industrial sales and transportation

Miscellaneous revenues

Gain (loss) from gas cost incentive sharing

Other margin adjustments
Regulatory adjustment for income taxes paid(1)

Utility margin

Customers - end of period:

Residential customers

Commercial customers

Industrial customers

Total number of customers

Actual degree days
Percent colder (warmer) than average weather(3)

$ 673,250

$ 642,337

$

744,355

$ 30,913

$ (102,018)

68,880

70,020

—

4,054

19,002

727,182

373,298

—

5,935

18,430

699,862

355,335

81,313

(7,162)

3,713

20,741

801,478

458,508

(1,140)

(11,293)

—

(1,881)

7,162

2,222

572

(2,311)

27,320

17,963

(101,616)

(103,173)

$ 353,884

$ 344,527

$

342,970

$

9,357

$

1,557

$ 321,608

$ 306,382

$

315,688

$ 15,226

$

(9,306)

28,335

4,308

(41)

(326)

—

28,586

4,452

3,811

1,296

—

28,635

4,875

2,107

(1,173)

(7,162)

(251)

(144)

(3,852)

(1,622)

—

(49)

(423)

1,704

2,469

7,162

$ 353,884

$ 344,527

$

342,970

$

9,357

$

1,557

628,634

65,321

918

621,399

63,619

923

694,873

685,941

4,379

4,152

615,670

62,948

925

679,543

4,652

3%

(3)%

9%

7,235

1,702

(5)

5,729

671

(2)

8,932

6,398

(1)  See "Regulatory Adjustment for Income Taxes Paid" below for additional information.
(2)  Amounts reported as margin for each category of customers are operating revenues, which are net of revenue taxes, less cost of gas.
(3)  Average weather represents the 25-year average degree days, as determined in our Oregon general rate case. For 2013, average weather 

represents the 25-year average degree days as set in our 2012 Oregon general rate case. For 2012, average weather represents degree 
days based on the 25-year average set in our 2003 Oregon general rate for the months of January through October, plus the 25-year 
average set in the 2012 Oregon general rate case for the months of November and December. For 2011, average weather represents the 
25-year average degree days as set in the 2003 Oregon general rate case.

30

a $3.9 million increase related to the timing 
impacts of changes in fixed monthly charges and 
decoupling baselines in the 2012 Oregon general 
rate case.
Partially offsetting these increases was a $1.4 
million decrease primarily related to the lower 
Oregon Authorized ROE of 9.5% from the 2012 
general rate case.

2012 COMPARED TO 2011. The primary factors contributing 
to changes in the residential and commercial markets were 
as follows:
• 

sales volumes decreased 43.7 million therms, or 6%, 
primarily reflecting 11% warmer weather;
operating revenues decreased $102.0 million, or 14%,  
due to a 6% decrease in sales volumes, a 7% decrease 
in average gas prices, which flowed through the 
Company's PGA rates, and $36.2 million of credits on 
customers’ bills in 2012 related to the refund of gas 
cost savings; and
utility margin decreased $9.3 million, or 3%, primarily 
reflecting the following:

• 

• 

a $3.9 million decrease due to timing differences 
from the new billing rate structure resulting from 
the Oregon general rate case;
an $8.4 million decrease due to the following 
weather impacts: (1) a $3.0 million of positive 
margin impact realized in the second quarter of 
2011 when colder weather was not fully offset by 
our Oregon weather normalization mechanism, (2) 
a $3.2 million decrease due to warmer weather in 
Washington, which does not have normalization 
mechanisms in place, and (3) a $2.2 million 
decrease due to  the effect of warmer weather on 
margin for Oregon customers that opt out of 
weather normalization; 
a $0.5 million decrease in operating revenues 
primarily due to rate case impacts including a 
decrease in our authorized ROE; and
a $3.4 million margin increase from our gas 
reserves investment.

Industrial Sales and Transportation
Operating revenues from industrial customers include the 
commodity cost component of gas sold under sales service 
but not under transportation service. Therefore, operating 
revenues from industrial customers can increase or 
decrease when customers switch between sales service 
and transportation service, but generally our margins from 
these customers are unaffected by these changes because 
we do not typically include a profit mark-up for the cost of 
gas. As such, we believe volumes delivered and margins 
are better measures of performance for the industrial sector. 

Residential and Commercial Sales
The primary factors that impact results of operations in the 
residential and commercial markets are customer growth, 
seasonal weather patterns, energy prices, competition from 
other energy sources, and economic conditions in our 
service areas. The impact of weather on margin is 
significantly reduced through our weather normalization 
mechanism in Oregon. Approximately 80% of our total 
customers are covered under this mechanism. The 
remaining customers either opt out of the mechanism or are 
located in Washington, which does not have a similar 
mechanism in place. For more information on our weather 
mechanism, see "Regulatory Matters—Rate Mechanisms—
Weather Normalization Tariff" above.

Residential and commercial sales highlights include:

In millions

Volumes (therms):

Residential sales

Commercial sales

Total volumes

Operating revenues:

2013

2012

2011

418.6

253.3

671.9

395.5

242.4

637.9

424.9

256.7

681.6

Residential sales

$

447.4

$

428.5

$

497.2

Commercial sales

225.9

213.8

247.2

Total operating
revenues

Utility margin:

Residential:

Sales

Weather normalization

Decoupling

Total residential utility
margin

Commercial:

Sales

Weather normalization

Decoupling

Total commercial utility
margin

$

673.3

$

642.3

$

744.4

$

234.1

$

211.6

$

222.5

(9.0)

2.6

(0.1)

8.6

(10.2)

16.7

227.7

220.1

229.0

92.1

(4.0)

5.8

93.9

84.0

0.2

2.1

86.3

87.0

(2.9)

2.6

86.7

Total utility margin

$

321.6

$

306.4

$

315.7

2013 COMPARED TO 2012. The primary factors contributing 
to changes in the residential and commercial markets were 
as follows:
• 

sales volumes increased 34.0 million therms, or 5%, 
primarily reflecting 5% colder weather and customer 
growth;
operating revenues increased $30.9 million, or 5%,  
due to a 5% increase in sales volumes and $36.2 
million of credits from gas cost savings which were 
applied to customer billings in 2012, partially offset by 
an 9% decrease in average gas prices, which flowed 
through the Company's PGA rates; and
utility margin increased $15.2 million, or 5%, primarily 
reflecting the following:

• 

• 

a $10.8 million increase related to customer growth 
and the rate-base return on our gas reserve and 
other investments; and

31

 
 
 
 
 
Industrial sales and transportation highlights include:

Other revenue highlights include:

In millions

2013

2012

2011

In millions

2013

2012

2011

Volumes (therms):

Other operating revenues

$

4.1

$

5.9

$

3.7

Industrial - firm sales

34.3

34.9

37.6

Industrial - firm
transportation

Industrial - interruptible
sales

Industrial - interruptible
transportation

Total volumes

Utility margin:

Industrial - sales and
transportation

144.5

131.2

133.0

59.5

59.6

59.1

236.2

474.5

248.2

473.9

241.0

470.7

$

28.3

$

28.6

$

28.6

2013 COMPARED TO 2012. The primary factors contributing 
to changes in the industrial sales and transportation markets 
were as follows:
• 

sales volumes remained relatively flat for 2013 
compared to 2012; and
utility margin decreased 1%, primarily due to lower 
demand from customers in the pulp and paper 
segment. These decreases were partially offset by 
contributions from new customers and added load from 
existing customers.

• 

2012 COMPARED TO 2011. The primary factors contributing 
to changes in the industrial sales and transportation markets 
were as follows:
• 

sales volumes increased 3.2 million therms, or 1%, 
primarily reflecting the impact of customers switching to 
natural gas due to the lower prices of natural gas 
compared to oil; and
utility margin remained flat primarily reflecting the loss 
of a few large industrial customers in 2011 due to the 
economy. Partially offsetting this decrease was an 
increase in customers switching to natural gas 
throughout 2012 due to its price advantage.

• 

Regulatory Adjustment for Income Taxes Paid 
Oregon Senate Bill (SB) 408 was in effect from 2007 
through 2010 and was a regulatory mechanism for truing up 
income taxes paid. In May 2011, SB 967 effectively 
repealed the SB 408 regulatory adjustment for income taxes 
paid for the 2010 tax year and all years thereafter. Due to 
the repeal, the Company recorded a $7.4 million write-off 
including interest in 2011. For additional information, see 
"Application of Critical Accounting Policies and Estimates—
Revenue Recognition" below.

Other Revenues
Other revenues include miscellaneous fee income as well 
as regulatory revenue adjustments, which reflect current 
period deferrals to and prior year amortizations from 
regulatory asset and liability accounts, except for gas cost 
deferrals which flow through cost of gas. Decoupling 
amortizations and other regulatory amortizations from prior 
year deferrals are included in current or future revenues 
from residential, commercial and industrial firm customers.

32

2013 COMPARED TO 2012. The primary factors contributing 
to changes in other revenues were as follows:
• 

other revenues decreased $1.9 million primarily due to 
a positive 2012 regulatory adjustment which did not 
reoccur in 2013.

2012 COMPARED TO 2011. The primary factors contributing 
to changes in other revenues were as follows:
• 

other revenues increased $2.2 million primarily due to a 
net increase in revenues from various regulatory 
adjustments of approximately $2.7 million, partially 
offset by a decrease of $0.4 million of miscellaneous 
fee income.

Cost of Gas
Cost of gas as reported by the utility includes gas 
purchases, gas withdrawn from storage inventory, gains and 
losses from commodity hedges, pipeline demand costs, 
seasonal demand cost balancing adjustments, regulatory 
gas cost deferrals, production from gas reserves, and 
company gas use. The OPUC and WUTC generally require 
natural gas commodity costs to be billed to customers at the 
actual cost incurred, or expected to be incurred, by the 
utility. Customer rates are set each year so that if cost 
estimates were met we would not earn a profit or incur a 
loss on gas commodity purchases; however, in Oregon we 
have an incentive sharing mechanism whereby we either 
increase or decrease margin results based on a percentage 
of actual gas costs as compared to embedded gas costs in 
the PGA. Under this provision, our net income can be 
affected by differences between actual and expected gas 
costs, which occur primarily because of market fluctuations 
and volatility affecting unhedged gas purchases in the PGA. 
In addition, we have a regulatory agreement where we earn 
a rate-base return on our investment in gas reserves, which 
is reflected in utility margin. See "Regulatory Matters—Rate 
Mechanisms—Purchased Gas Adjustment and Gas 
Reserves" above. 

We use natural gas commodity hedge contracts (derivative 
instruments), primarily fixed-price commodity swaps, 
consistent with our financial derivatives policies to help 
manage gas price stability. Gains and losses from these 
financial hedge contracts are generally included in our PGA 
and normally do not impact net income because the hedged 
prices are reflected in our annual PGA rates, subject to a 
regulatory prudence review. However, hedge contracts 
entered into after the annual PGA rates are set for Oregon 
customers can impact net income because we would be 
required to share in any gains or losses as compared to the 
corresponding commodity prices built into rates in the PGA. 
In Washington, 100% of the actual gas costs, including 
hedge gains and losses allocated to Washington gas sales, 
are passed through in customer rates. See "Application of 
Critical Accounting Policies and Estimates—Accounting for 
Derivative Instruments and Hedging Activities" below,  
"Regulatory Matters—Rate Mechanisms—Purchased Gas 
Adjustment" above, and Note 13.

 
Cost of gas highlights include:

Dollars and therms in
millions

2013

2012

2011

Cost of gas

$

373.3

$

355.3

$

458.5

Total volumes sold and
delivered (therms)

Average cost of gas
(cents per therm)

Gain from gas cost
incentive sharing

1,146

1,112

1,152

$

0.49

$

0.54

$

0.59

—

3.8

2.1

2013 COMPARED TO 2012. The primary factors contributing 
to changes in cost of gas were as follows:
• 

cost of gas increased $18.0 million, or 5%, including the 
$37.7 million of credits applied to customer billings in 
2012 related to the refund of gas cost savings. 
Excluding the customer credits, total cost of gas 
decreased $19.7 million, or 5%, primarily due to a 3% 
increase in volumes offset by an 9% decrease in 
average cost of gas collected through rates, reflecting 
lower market prices for natural gas.

2012 COMPARED TO 2011. The primary factors contributing 
to changes in cost of gas were as follows:
• 

cost of gas decreased $103.2 million, or 23%, including 
the $37.7 million of credits applied to customer billings 
in 2012 related to the refund of gas cost savings. 
Excluding the customer credits, total cost of gas 
decreased $65.5 million, or 14%, primarily reflecting 
lower usage due to 11% warmer weather and PGA rate 
decreases in 2012 and 2011; and
average cost of gas collected through rates decreased  
5 cents per therm, primarily reflecting lower gas prices 
that were passed on to customers through PGA rate 
decreases effective November 1, 2011 and 2012.

• 

The effect on net income from our gas cost incentive 
sharing mechanism was a pre-tax loss in margin of less 
than $0.1 million in 2013 compared to a pre-tax gain in 
margin of $3.8 million in 2012 and $2.1 million in 2011. For 
a discussion of our gas cost incentive sharing mechanism, 
see "Regulatory Matters—Rate Mechanisms—Purchased 
Gas Adjustment" above.

Business Segments - Gas Storage
Our gas storage segment primarily consists of the non-utility 
portion of our Mist underground storage facility in Oregon 
and our 75% ownership interest in the Gill Ranch 
underground storage facility in California. 

At Mist, we provide gas storage services to customers in the 
interstate and intrastate markets primarily using storage 
capacity that has been developed in advance of core utility 
customers’ requirements. We also contract with an 
independent energy marketing company to provide asset 
management services using our utility and non-utility 
storage and transportation capacity, the results of which are 
included in the gas storage businesses segment. Pre-tax 
income from gas storage at Mist and asset management 
services using our utility's storage or transportation capacity 

33

is subject to revenue sharing with core utility 
customers. Under this regulatory incentive sharing 
mechanism in Oregon, we retain 80% of pre-tax income 
from Mist gas storage services and from asset management 
services when the underlying costs of the capacity being 
used are not included in our utility rates, and 33% of pre-tax 
income from such storage and asset management services 
when the capacity being used is included in utility rates. The 
remaining 20% and 67%, respectively, are credited to a 
deferred regulatory account for credit to our core utility 
customers. We have a similar sharing mechanism in 
Washington for pre-tax income derived from gas storage 
and asset management services. 

Our 75% undivided ownership interest in the Gill Ranch 
facility is held by our wholly-owned subsidiary Gill Ranch, 
which is also the operator of the facility. Our portion of the 
facility is currently providing 15 Bcf of gas storage capacity. 
Gill Ranch commenced operations at the end of 2010, with 
the first full storage injection season beginning on April 1, 
2011. We also contract with an independent energy 
marketing company to manage the value of our storage 
assets at Gill Ranch. See Note 4.

Gas storage segment highlights include:

In millions, except EPS
data

2013

2012

2011

Gas storage net income

$

5.6

$

4.5

$

4.1

EPS - gas storage
segment
Average gas storage
contracted capacity (Bcf)

0.21

21

0.17

21

0.15

16

2013 COMPARED TO 2012. Our gas storage segment net 
income increased $1.0 million primarily due to higher 
revenues from asset management services and lower 
operating costs.

2012 COMPARED TO 2011. Our gas storage segment net 
income increased $0.4 million primarily due to revenue 
increases at Gill Ranch from additional contracted storage 
capacity. This increase was partially offset by a full year of 
interest expense from Gill Ranch's senior secured debt, 
which was issued in November 2011.

For the 2013-2014 gas storage year we are fully contracted 
at Gill Ranch and at Mist. We are in the process of 
contracting for the upcoming 2014-2015 gas storage year, 
which begins in April 2014. The market outlook for gas 
storage in 2014 remains challenging. In recent months, the 
country has seen significant storage withdrawals and gas 
price volatility due to the extreme cold weather nationally, 
but current storage values have been negatively impacted 
by the increase in spring and summer prices as they are 
similar to winter prices, thus reducing the desirability of 
purchasing gas. As a result we anticipate contracting for the 
upcoming storage year at lower market prices than in 
previous periods, especially at our California facility where 
some multi-year contracts are expiring. See, "Financial 
Condition—Liquidity and Capital Resources" for more 
information.

Other
Other primarily consists of NNG Financial's equity 
investment in KB Pipeline, an equity investment in PGH, 
which in turn has invested in a cross-Cascades pipeline 
project, and other miscellaneous non-utility investments and 
business activities. See Note 4 and Note 12 for further 
details on other activities and our investment in PGH.

Other highlights include:

In millions, except EPS
data

2013

2012

2011

Other net income (loss)

$

— $

0.2

$

EPS - other

—

—

(0.7)

(0.02)

2013 COMPARED TO 2012. Other remained relatively flat over 
2013 compared to 2012, as anticipated.

2012 COMPARED TO 2011. Other net income increased $0.9 
million as our investment in PGH had a $1.3 million 
impairment charge in 2011, which did not reoccur in 2012. 

Consolidated Operations

Operations and Maintenance
Operations and maintenance highlights include:

In millions

2013

2012

2011

Operations and maintenance

$ 136.6

$ 129.5

$ 125.4

2013 COMPARED TO 2012. Operations and maintenance 
expense increased $7.1 million or 6% in 2013 compared to 
2012. The following summarizes the major factors that 
contributed to this increase:
• 

a $5.9 million increase in utility payroll expense 
primarily related to additional customer service 
positions for new programs and higher incentive 
compensation; and
a $2.7 million increase in utility expenses related to 
system maintenance and safety program costs.

• 

Partially offsetting the above factors were: 
• 

a $0.9 million decrease in utility bad debt expense. See 
further discussion below.

2012 COMPARED TO 2011. Operations and maintenance 
expense increased $4.1 million or 3% in 2012 compared to 
2011. The following summarizes the major factors that 
contributed to this increase:
• 

a $3.7 million increase in utility payroll expense 
primarily related to an increase in field service 
employees;
a $1.7 million increase in utility non-payroll expense 
including higher costs for new employee training, 
expenses related to the Oregon general rate case, 
higher costs for information technology system 
maintenance and other general customer service cost 
increases; and
a $0.9 million increase in utility employee benefit 
expense, principally related to health care and pension 
costs, which were driven by an increase in employee 
count. See below for additional discussion on pension 
costs.

• 

• 

Partially offsetting the above factors were: 
• 

a $1.1 million reduction in gas storage general and 
administrative expense primarily reflecting lower costs 
compared to 2011 when Gill Ranch incurred higher 
start-up costs; and
a $0.8 million decrease in utility bad debt expense.

• 

The utility's bad debt expense remains well below 0.5% of 
operating revenues and has decreased compared to 2012. 
This decrease is primarily due to lower levels of delinquent 
account balances during the period and a continuation of 
lower delinquency rates resulting in an overall decrease to 
our allowance for uncollectible accounts. Our bad debt 
expense results are at historically low levels for the 
Company. 

Our accounting expense for pension costs increased in 
2013 largely due to lower discount rates; however, the 
OPUC approved a deferral of our utility pension costs for 
amounts in excess of what is currently recovered in 
customer rates. The pension cost deferral is recorded to a 
regulatory balancing account, which reduces operations and 
maintenance expense. For the year ended December 31, 
2013 and 2012, we deferred pension expenses totaling $9.1 
million and $7.9 million, respectively. See Note 8. As a 
result, increased pension costs had a minimal effect on 
operations and maintenance expense in 2013 and 2012, 
with the increase principally related to the cost allocation to 
our Washington operations, which are not covered by the 
pension balancing account. For further explanation of the 
pension balancing account, see "Regulatory Matters—Rate 
Mechanisms—Pension Deferral" above.

General Taxes
General taxes principally consist of property and payroll 
taxes and regulatory fees. 

General tax highlights include:

In millions

General taxes

2013

2012

2011

$

30.0

$

30.6

$

29.3

2013 COMPARED TO 2012. General taxes remained relatively 
flat for 2013 compared to 2012, as anticipated.

2012 COMPARED TO 2011. General taxes increased $1.3 
million or 4% in 2012 compared to 2011 primarily due to a 
$0.7 increase in property taxes at Gill Ranch, which reflect 
increased capital investments added to assessed property 
tax values during 2012, as well as a $0.4 increase in payroll 
tax expense at the utility. 

Depreciation and Amortization
Depreciation and amortization highlights include:

In millions

2013

2012

2011

Depreciation and amortization

$

75.9

$

73.0

$

70.0

2013 COMPARED TO 2012. Depreciation and amortization 
expense for 2013 increased by $2.9 million compared to 
2012 due to an increase in utility depreciation expense on 
investments in utility plant for system improvements and 
training facilities. 

34

Income Tax Expense
Income tax expense highlights include:

In millions

2013

2012

2011

Income tax expense

$ 41.7

$ 43.4

$ 42.8

Effective tax rate

40.8%

42.5%

40.5%

2013 COMPARED TO 2012. The decrease in income tax 
expense of $1.7 million or 4% was primarily due to a $2.7 
million one-time tax charge taken in 2012 from an Oregon 
general rate case disallowance.

2012 COMPARED TO 2011. The increase in income tax 
expense of $0.6 million or 1% was primarily due to a one-
time $2.7 million tax charge related to the 2012 Oregon 
general rate case. This increase in taxes was partially offset 
by lower pre-tax consolidated earnings. 

EFFECTIVE TAX RATES. The effective tax rate in 2013 was 
lower due to the tax charge taken in 2012 but consistent 
with expectations and historical rates. The higher effective 
tax rate in 2012 was primarily due to the $2.7 million tax 
charge related to the Oregon general rate case. For more 
information on our income taxes, including a reconciliation 
between the statutory federal and state income tax rates 
and the effective tax rate, see Note 2 and Note 9.

FINANCIAL CONDITION

Capital Structure
One of our long-term goals is to maintain a strong 
consolidated capital structure, generally consisting of 45% 
to 50% common stock equity and 50% to 55% long-term 
and short-term debt. When additional capital is required, 
debt or equity securities are issued depending upon both 
the target capital structure and market conditions. These 
sources of capital are also used to fund long-term debt 
retirements and short-term commercial paper maturities. 
See "Liquidity and Capital Resources" below and Note 7. 

Achieving the target capital structure and maintaining 
sufficient liquidity to meet operating requirements are 
necessary to maintain attractive credit ratings and provide 
access to capital markets at reasonable costs. Our 
consolidated capital structure was as follows:

Common stock equity

Long-term debt

Short-term debt, including current
maturities of long-term debt

Total

December 31,

2013

2012

44.7%

45.3%

40.5

14.8

42.9

11.8

100.0%

100.0%

2012 COMPARED TO 2011. Depreciation and amortization 
expense for 2012 increased by $3.0 million compared to 
2011 primarily due to a $2.7 million increase in investments 
in utility plant for system improvements and training 
facilities. 

Other Income and Expense, Net
Other income and expense, net highlights include:

In millions

2013

2012

2011

Gains from company-
owned life insurance

$

Interest income

Gain on sale of
investments

Income (loss) from equity
investments

Net interest on deferred 
regulatory accounts(1)

Other non-operating

Total other income and
expense, net

2.5

0.1

—

(0.1)

4.5

(2.3)

$

$

2.3

0.2

(0.2)

—

3.0

(2.1)

2.2

0.1

(0.1)

(1.6)

4.6

(2.1)

$

4.7

$

3.2

$

3.1

(1) Prior period balances have been adjusted for a prior period error 
identified during the first quarter of 2013. See Note 16 for additional 
detail.

2013 COMPARED TO 2012. Other income and expense, net 
increased $1.5 million in 2013 primarily due to interest on 
higher average regulatory account balances. 

2012 COMPARED TO 2011. Other income and expense, net 
remained relatively flat for 2012 compared to 2011.

Interest Expense, Net 
Interest expense, net highlights include:

In millions

2013

2012

2011

Interest expense, net

$

45.2

$

43.2

$

42.1

2013 COMPARED TO 2012. Interest expense, net of amounts 
capitalized, increased $2.0 million in 2013 primarily due to 
an increase of $2.3 million at the utility from the issuance of 
long-term debt. The utility issued $50 million of debt with a 
coupon rate of 3.542% in August 2013 and $50 million of 
debt with a coupon rate of 4.00% in October 2012. This 
increase was partially offset by a $0.7 million reduction in 
2013 interest expense at the utility from the retirement of 
$40 million of long-term debt with a coupon rate of 7.13% in 
2012. See Note 7 for further detail.

2012 COMPARED TO 2011. Interest expense, net of amounts 
capitalized, in 2012 increased $1.1 million primarily due to a 
$2.8 million increase in interest expense at Gill Ranch from 
the issuance of $40 million of subsidiary senior secured 
debt in November 2011, partially offset by a $1.5 million 
decrease in interest expense at the utility due to lower 
interest rates on new short-term and long-term debt 
issuances. 

Interest expense also reflects a lower average interest rate 
used in calculating the allowance for funds used during 
construction (AFUDC). AFUDC rates, consists of short-term 
and long-term capital costs as appropriate, were 0.3% in 
both 2013 and 2012, and 0.5% in 2011.

35

 
Liquidity and Capital Resources 
At December 31, 2013, we had $9.5 million of cash and 
cash equivalents compared to $8.9 million at December 31, 
2012. We also had $4.0 million in restricted cash at Gill 
Ranch as of December 31, 2013 and 2012, which is being 
held as collateral for its long-term debt outstanding. In order 
to maintain sufficient liquidity during periods when capital 
markets are volatile, we may elect to maintain higher cash 
balances and add short-term borrowing capacity. In 
addition, we may also pre-fund utility capital expenditures 
when long-term fixed rate environments are attractive. As a 
regulated entity, our issuance of equity securities and most 
forms of debt securities are subject to approval by the 
OPUC and WUTC. Our use of retained earnings is not 
subject to those same restrictions.

For the utility segment, the short-term borrowing 
requirements typically peak during colder months when the 
utility borrows money to cover the lag between when it 
purchases natural gas and when customers pay for the gas. 
Our short-term liquidity is supported by cash balances, 
internal cash flow from operations, proceeds from the sale 
of commercial paper notes, borrowings from multi-year 
credit facilities, cash available from surrender value in 
company-owned life insurance policies, and proceeds from 
the sale of long-term debt. We use utility long-term debt 
proceeds to finance utility capital expenditures, refinance 
maturing debt of the utility and provide for general corporate 
purposes of the utility. 

Market conditions have improved over the past few years as 
reflected by tighter credit spreads and increased access to 
financing for investment grade issuers. Based on our 
current debt ratings (see "Credit Ratings" below), we have 
been able to issue commercial paper and long-term debt at 
attractive rates and have not needed to borrow from our 
back-up credit facility. In the event that we are not able to 
issue new debt due to adverse market conditions or other 
reasons, we expect that our near term liquidity needs can 
be met using internal cash flows or, for the utility segment, 
drawing upon our committed credit facility. We also have a 
universal shelf registration filed with the SEC for the 
issuance of secured and unsecured debt or equity 
securities, subject to market conditions and certain 
regulatory approvals. As of December 31, 2013, we have 
Board authorization to issue up to $325 million of additional 
first mortgage bonds. We currently have OPUC approval to 
issue up to $25 million of additional long-term debt for 
approved purposes. We plan to file an application with the 
OPUC in early 2014 to increase our OPUC long-term debt 
authorization to $325 million.

In the event that our senior unsecured long-term debt  
ratings are downgraded, or our outstanding derivative 
position exceeds a certain credit threshold, our 
counterparties under derivative contracts could require us to 
post cash, a letter of credit or other form of collateral, which 
could expose us to additional cash requirements and may 
trigger increases in short-term borrowings. However, based 
upon current financial swap and option contracts 
outstanding, we do not have any collateral demand 
exposure as the Company had unrealized gains of $5.4 
million at December 31, 2013.

The "Dodd-Frank Wall Street Reform and Consumer 
Protection Act" (Dodd-Frank Act or DFA) establishes a 
statutory framework for the comprehensive regulation of 
financial institutions that participate in the swaps market 
and, among other things, requires additional government 
regulation of derivative and over-the-counter transactions 
and expanded collateral requirements. The Company is not 
currently subject to regulation as a Swap Dealer under the 
DFA nor do we expect that it will be in the future based on 
current or as yet unfinalized rules. Further, we believe we 
are eligible for and have taken appropriate steps to be an 
exempt end-user and as such we are exempt from certain 
reporting obligations under the DFA. We will continue to 
monitor interpretations and Commodity Futures Trading 
Commission guidance to determine the impact, if any, on 
our hedging policies, procedures, results of operations, 
financial position and liquidity.

Other recent developments that may have a significant 
impact on our liquidity and capital resources include pension 
contribution requirements, current tax benefits from bonus 
depreciation and other tax advantaged investments, 
environmental expenditures and insurance recoveries, and 
strategic growth initiatives. 

With respect to pensions, we expect to make significant 
contributions to our company-sponsored defined benefit 
plan, which is closed to new employees, over the next 
several years until we are fully funded under the Pension 
Protection Act rules, including the new rules issued under 
the Moving Ahead for Progress in the 21st Century Act 
(MAP-21). See "Application of Critical Accounting Policies—
Accounting for Pensions and Postretirement Benefits" 
below. 

Regarding federal income tax liabilities, extensions were 
granted allowing us to take 100% bonus depreciation on 
qualified expenditures during 2011 and 50% bonus 
depreciation on a majority of our capital expenditures in 
2012 and 2013, which significantly reduced our tax liability 
for those tax years and is expected to provide cash flow 
benefits in subsequent years.

Concerning environmental expenditures, we expect to 
continue using cash resources to fund our environmental 
liabilities, but we also anticipate recovering amounts through 
our insurance settlements and utility rates. The amount and 
timing of these expenditures is uncertain with additional 
insurance recoveries expected in 2014. See Note 15, Note 
17, and "Results of Operations—Regulatory Matters—
Environmental Costs".

The Company did not issue any one-time refunds or credits 
to customers from gas cost savings in 2013. In 2012, due to 
significantly lower gas prices from November 2011 to March 
2012, the Company was able to provide $35 million of 
credits to its Oregon utility customers' bills and $4 million in 
credits to its Washington customers. See "Results of 
Operations—Regulatory Matters—Regulatory Mechanisms
—Purchased Gas Adjustment and —Customer Credits for 
Gas Cost Incentive Sharing" above. In addition, the 
Company may also provide its Oregon utility customers with 
interstate storage credits from the regulatory incentive 

36

  
  
sharing mechanism related to gas storage and asset 
management services. See "Results of Operations—
Regulatory Matters—Regulatory Mechanisms—Customer 
Credits for Gas Storage Sharing" above. 

Short-term liquidity for our gas storage segment is 
supported by cash balances, internal cash flow from 
operations, external financing, and, to a certain extent, 
equity investments from its parent company. Gill Ranch has 
limited operational history, with operations commencing in 
October 2010. The abundant supply of natural gas, low 
volatility of natural gas prices, and available gas storage 
capacity in California have resulted in lower storage market 
prices than we have seen in previous years. As a result, we 
are anticipating lower estimated future earnings and cash 
flows for Gill Ranch. The amount and timing of these cash 
flows from year to year are uncertain as the majority of Gill 
Ranch's storage contracts are short-term. While we expect 
short-term storage prices to be challenging, we do not 
anticipate material changes in our sources of short-term 
liquidity and anticipate our operating cash flows will be 
sufficient. 

In November 2011, Gill Ranch issued $40 million of senior 
secured debt, with a fixed interest rate on $20 million and a 
variable interest rate on the remaining $20 million. The 
average combined interest rate on the debt was 7.38% per 
annum through December 31, 2013. This debt is secured by 
all of the membership interests in Gill Ranch and is 
nonrecourse to NW Natural and other entities of the 
consolidated group. The maturity date of the debt is 
November 30, 2016.

Under the debt agreements, Gill Ranch is subject to certain 
covenants and restrictions, including but not limited to a 
financial covenant that requires Gill Ranch to maintain 
minimum adjusted EBITDA at various levels over the term of 
the debt. The minimum adjusted EBITDA increases 
incrementally over the first few years, reaching its highest 
level in the 12-month period beginning April 1, 2015. Under 
the agreements, Gill Ranch is also subject to a debt service 
reserve requirement of 10% of the outstanding principal 
amount, certain prepayment penalties, restrictions on 
dividends out of Gill Ranch unless certain earnings ratios 
are met, and restrictions on the incurrence of additional 
debt. At December 31, 2013, we were in compliance with all 
covenants and restrictions under the debt agreements.

Based on several factors, we believe our Company's 
liquidity is sufficient to meet anticipated near-term cash 
requirements, including all contractual obligations, investing 
and financing activities discussed below.

Dividend Policy 
We have paid quarterly dividends on our common stock 
each year since stock was first issued to the public in 1951. 
Annual common stock dividend payments per share, 
adjusted for stock splits, have increased each year since 
1956. The declarations and amount of future dividends will 
depend upon our earnings, cash flows, financial condition 
and other factors. The amount and timing of dividends 
payable on our common stock is at the sole discretion of our 
Board of Directors.

Off-Balance Sheet Arrangements  
Except for certain lease and purchase commitments, we 
have no material off-balance sheet financing arrangements. 
See "Contractual Obligations" below.

37

Contractual Obligations
The following table shows our contractual obligations at December 31, 2013 by maturity and type of obligation:

In millions

Commercial paper

Long-term debt maturities

Interest on long-term debt
Postretirement benefit payments(1)

Capital leases

Operating leases
Gas purchases(2)

Gas pipeline capacity commitments
Gas reserves(3)
Other purchase commitments(4)
Other long-term liabilities(5)

Payments Due in Years Ending December 31,

2014

2015

2016

2017

2018

Thereafter

Total

$

188.2

$

— $

— $

— $

— $

— $

60.0

41.8

21.9

0.5

5.6

60.7

98.7

49.2

0.5

15.2

40.0

40.3

22.5

0.2

5.5

—

77.4

41.8

0.1

—

65.0

37.3

23.3

0.1

5.5

—

66.1

—

—

—

40.0

32.1

24.1

—

5.5

—

52.1

—

—

—

22.0

29.2

25.0

—

2.9

—

42.3

—

—

—

514.7

271.3

148.7

—

34.9

—

217.0

—

13.6

—

188.2

741.7

452.0

265.5

0.8

59.9

60.7

553.6

91.0

14.2

15.2

Total

$

542.3

$

227.8

$

197.3

$

153.8

$

121.4

$

1,200.2

$

2,442.8

(1)  Postretirement benefit payments primarily consists of two items: (1) estimated qualified defined benefit pension plan payments, which are 
funded by plan assets and future cash contributions, and (2) required payments to the Western States multiemployer pension plan due to 
the Company withdrawing from the plan in December 2013. See Note 8.

(2)  Gas purchases include contracts which use price formulas tied to monthly index prices, plus hedged derivative liabilities. Commitment 
amounts are based on futures prices as of December 31, 2013. For a summary of derivatives, see Note 13. For a summary of gas 
purchase and gas pipeline capacity commitments, see Note 14.

(3)  Gas reserves payments reflect contractual obligations to invest in additional gas reserves under our agreements. The contracts for such 
reserves include termination provisions, under which investments in additional reserves would not be required, if conditions for such 
provisions were met. We have assumed no cancellation for disclosure of gas reserve commitments.

(4)  Other purchase commitments primarily consist of base gas requirements and remaining balances under existing purchase orders. 
(5)  Other long-term liabilities includes accrued vacation liabilities for management employees and deferred compensation plan liabilities for 
executives and directors. The timing of these payments are uncertain; however, these payments are unlikely to all occur in the next 12 
months.

In addition to known contractual obligations listed in the 
above table, we have also recognized liabilities for future 
environmental remediation or action. The exact timing of 
payments beyond 12 months with respect to those liabilities 
cannot be reasonably estimated due to numerous 
uncertainties surrounding the course of environmental 
remediation and the preliminary nature of site investigations. 
See Note 15 for a further discussion of environmental 
remediation cost liabilities.

At December 31, 2013, 612 of our utility employees were 
members of the Office and Professional Employees 
International Union (OPEIU) Local No. 11. In July 2009, 
these union employees and the Company agreed to a five-
year labor agreement called the Joint Accord. The 2009 
Joint Accord provides for a 1% automatic wage increase 
each year, plus the potential for up to an additional 2% 
based on wage inflation and other factors. It also provides 
competitive health benefits while limiting the cost increases 
for these benefits to the same level as the annual wage 
increases. The 2009 Joint Accord extends to May 31, 2014. 
In 2013, each party served notice of intent to negotiate the 
terms of an agreement prior to the May 31, 2014 expiration 
date. We are currently engaged in negotiations to meet this 
schedule.

Short-Term Debt
Our primary source of utility short-term liquidity is from 
internal cash flows and the sale of commercial paper. In 
addition to issuing commercial paper to meet working 
capital requirements, including seasonal requirements to 
finance gas purchases and accounts receivable, short-term 
debt may also be used to temporarily fund utility capital 
requirements. Commercial paper is periodically refinanced
through the sale of long-term debt or equity securities. Our 
outstanding commercial paper, which is sold through two 
commercial banks under an issuing and paying agency 
agreement, is supported by one or more unsecured 
revolving credit facilities. See "Credit Agreements" below. At 
December 31, 2013 and 2012, our utility had commercial 
paper outstanding of $188.2 million and $190.3 million, 
respectively. The effective interest rate on the utility’s 
commercial paper outstanding at December 31, 2013 and 
2012 was 0.3%.

38

 
 
 
 
Credit Agreements
In December 2012, we entered into a new multi-year credit 
agreement for unsecured revolving loans totaling $300 
million and an available extension of commitments for two 
additional one-year periods, subject to lender approval. In 
December 2013, we extended our commitment for an 
additional year with an updated maturity date of December 
20, 2018. All lenders under the new agreement are major 
financial institutions with committed balances and 
investment grade credit ratings as of December 31, 2013 as 
follows:

In millions

Lender rating, by category

Loan Commitment

AA/Aa

A/A

BBB/Baa

Total

$

$

189

111

—

300

Based on credit market conditions, it is possible that one or 
more lending commitments could be unavailable to us if the 
lender defaulted due to lack of funds or insolvency; 
however, the Company does not believe this risk to be 
eminent due to the lenders' strong investment grade credit 
ratings.

Our credit agreement allows us to request increases in the 
total commitment amount, up to a maximum of $450 million. 
The agreement also permits the issuance of letters of credit 
in an aggregate amount of up to $200 million. Any principal 
and unpaid interest amounts owed on borrowings under the 
credit agreements is due and payable on or before the 
maturity date. There were no outstanding balances under 
this or our prior credit agreement at December 31, 2013 or 
2012. The credit agreement requires us to maintain a 
consolidated indebtedness to total capitalization ratio of 
70% or less. Failure to comply with this covenant would 
entitle the lenders to terminate their lending commitments 
and accelerate the maturity of all amounts outstanding. We 
were in compliance with this covenant at December 31, 
2013 and 2012, with consolidated indebtedness to total 
capitalization ratios of 55.3% and 54.7%, respectively.

The agreement also requires us to maintain credit ratings 
with Standard & Poor's (S&P) and Moody's Investors 
Service, Inc. (Moody’s) and notify the lenders of any change 
in our senior unsecured debt ratings or senior secured debt 

ratings, as applicable, by such rating agencies. A change in 
our debt ratings by S&P or Moody’s is not an event of 
default, nor is the maintenance of a specific minimum level 
of debt rating a condition of drawing upon the credit 
agreement. In addition, interest rates on any loans 
outstanding under the credit agreements are tied to debt 
ratings and therefore a change in the debt rating would 
increase or decrease the cost of any loans under the credit 
agreements when ratings are changed. See "Credit 
Ratings" below.

Credit Ratings
Our credit ratings are a factor in our liquidity, affecting our 
access to the capital markets including the commercial 
paper market. Our credit ratings also have an impact on the 
cost of funds and the need to post collateral under 
derivative contracts. In February 2014, Moody's revised our 
ratings outlook from negative to stable. The following table 
summarizes our current debt ratings from S&P and 
Moody’s:

Commercial paper (short-term debt)

Senior secured (long-term debt)

Senior unsecured (long-term debt)

Corporate credit rating

Ratings outlook

S&P

Moody's

A-1

AA-

n/a

A+

P-2

A1

A3

n/a

Stable

Stable

The above credit ratings are dependent upon a number of 
factors, both qualitative and quantitative, and are subject to 
change at any time. The disclosure of these credit ratings is 
not a recommendation to buy, sell or hold NW Natural 
securities. Each rating should be evaluated independently of 
any other rating.

Retirements of Long-Term Debt
The following FMBs were retired:

In millions

Company First Mortgage Bonds

6.665% Series B due 2011

7.13% Series B due 2012

Years Ended December 31,

2013

2012

2011

$

$

— $

— $

—

— $

40

40

$

10

—

10

39

 
 
 
 
Cash Flows

Operating Activities
Year-over-year changes in our operating cash flows are 
primarily affected by net income, changes in working capital 
requirements, and other cash and non-cash adjustments to 
operating results. 

Operating activity highlights include:

In millions

2013

2012

2011

Cash provided by operating
activities

$ 176.4

$ 168.8

$ 233.5

2013 COMPARED TO 2012. The significant factors 
contributing to the $7.6 million increase in operating cash 
flows were as follows:
•  an increase of $15.8 million in other, net primarily due to 
inflows from changes in net regulatory balances offset by 
a decrease in pension liabilities;

•  an increase of $12.4 million from net changes in gas cost 
balances, which primarily reflects $39 million in credits 
refunded to customers in 2012;

•  an increase of $11.8 million due to lower cash 

contributions to qualified defined benefit pension plans as 
a result of new IRS funding rules, commonly referred to 
as MAP-21; 

•  an increase of $8.0 million from changes in accounts 

payable balances; and

•  an increase of $4.7 million due to changes in the 

amortization of gas reserves balance.
 Partially offsetting these increases was:
•  a decrease of $48.3 million from changes in the accounts 
receivable balance, primarily due to customer growth and 
29% colder weather in December 2013.

During the year ended December 31, 2013, we contributed 
$11.7 million to our utility's qualified defined benefit pension 
plans, which was significantly higher than the $5.7 million in 
non-cash expense recognized on the income statement. In 
2012, we contributed $23.5 million and had $5.4 million in 
non-cash expense. We expect pension contributions to 
exceed non-cash expense for the next few years, but 
contribution amounts will be less than previously anticipated 
due to the new federal funding requirements under MAP-21. 
The amounts and timing of future contributions will depend 
on market interest rates and investment returns on the 
plans’ assets. See Note 8.

Also significantly affecting cash flows over the past few 
years has been income tax relief, including the Tax Relief, 
Unemployment Insurance Reauthorization, and Job 
Creation Act of 2010 (2010 Act) and American Taxpayer 
Relief Act of 2012 (2012 Act). The 2010 Act allowed 100% 
bonus depreciation on qualified property placed in service 
between September 9, 2010 and December 31, 2011, and 
also extended the 50% bonus depreciation deduction to 
qualifying property placed in service during 2012. The 2012 
Act extended 50% bonus depreciation through 2013 for 

modified accelerated cost recovery system (MACRS) 
property with a recovery period of 20 years or less. These 
and other tax benefits resulted in a net operating loss for 
2010, which was carried back to the tax year 2009 and 
resulted in a federal income tax refund of $22.3 million 
received in 2011 and an additional $2.1 million received in 
2012. We generated taxable income in 2011 that was fully 
offset by the net operating loss (NOL) carried forward from 
2010. We generated NOL carryforwards during 2012 and  
2013. As of December 31, 2013, we had an estimated 
federal income tax receivable balance of $3.2 million and an 
estimated NOL carryforward balance of $113.0 million. In 
2011, Oregon conformed with federal bonus depreciation, 
contributing to a state NOL carryforward of $113.7 million. 
We anticipate being able to use the full amount of both NOL 
carryforward balances in future years prior to expiration. 
The NOLs would otherwise expire in 20 years for federal 
and 15 years for Oregon.

Final tangible property regulations applicable to all 
taxpayers were issued by the Treasury Department on 
September 13, 2013. These regulations are generally 
effective for taxable years beginning on or after January 1, 
2014. In addition, procedural guidance related to the 
regulations was recently issued under which taxpayers may 
make accounting method changes to comply with the 
regulations. We have evaluated the regulations and do not 
anticipate any material impact. However, unit-of-property 
guidance applicable to natural gas distribution networks has 
not yet been issued and is expected in 2014. We will 
evaluate the impact of this guidance once it is finalized.

2012 COMPARED TO 2011. The significant factors 
contributing to the $64.6 million decrease in operating cash 
flow for 2012 compared to 2011 are as follows: 

•  a decrease of $38.1 million in deferred environmental 

expenditures, net of recoveries, primarily due to insurance 
recoveries for environmental claims received in 2011;
•  a decrease of $30.9 million in taxes accrued, primarily 

due to federal tax refunds totaling $36.6 million received 
in 2011; and

•  a decrease of  $26.2 million from changes in the deferred 

gas cost savings balance, which was reduced when 
approximately $39 million was refunded to customers in 
June and July 2012.

Partially offsetting these decreases was:
•  an increase of $28.4 million from reductions in receivable 
balances primarily due to higher receivable balances from 
colder weather at the end of 2011, which were collected 
early in 2012.

We have lease and purchase commitments relating to our 
operating activities that are financed with cash flows from 
operations. For information on cash flow requirements 
related to leases and other purchase commitments, see 
“Financial Condition—Contractual Obligations” above and 
Note 14.

40

Investing Activities
Investing activity highlights include:

In millions

2013

2012

2011

Total cash used in investing
activities

$ 182.1

$ 184.7

$ 153.1

Capital expenditures

138.9

132.0

100.5

Proceeds from sale of
assets

Utility gas reserves

(8.6)

54.1

—

54.1

—

50.6

2013 COMPARED TO 2012. The $2.5 million decrease in cash 
used in investing activities was due to proceeds received 
from the sale of assets. This decrease was partially offset 
by higher capital expenditures, reflecting increased 
investments for new customer acquisitions, completion of 
our Gasco Source Control water treatment station, and 
additional expenditures for system integrity and bare steel 
pipe removal.

2012 COMPARED TO 2011. The $31.6 million increase in cash 
used in investing activities was due to higher capital 
expenditures reflecting expenditures relating to a new utility 
training and back-up emergency operations facility, and 
several upgrades to existing building facilities. In addition, 
we also invested additional monies in utility gas reserves.

Over the five-year period 2014 through 2018, total utility 
capital expenditures are estimated to be between $600 and 
$700 million and utility expenditures under the existing gas 
reserves agreement are estimated to be around $90 million. 
The estimated level of utility capital expenditures over the 
next five years reflects assumptions for continued customer 
growth, technology, distribution system improvements and 
gas storage facilities. Most of the required funds are 
expected to be internally generated over the five-year 
period, and any remaining funding will be obtained through 
the issuance of long-term debt or equity securities, with 
short-term debt providing liquidity and bridge financing. In 
2014, utility capital expenditures are estimated to be 
between $115 and $135 million, and non-utility capital 
investments are estimated to be less than $10 million. 
Additional non-utility spend for gas storage and other 
investments during and after 2014 will depend largely on 
future decisions about potential expansion opportunities in 
gas storage and pipeline projects. Gas storage segment 
capital expenditures in 2014 are expected to be paid from 
working capital, and additional equity contributions from NW 
Natural as needed.

Financing Activities
Financing activity highlights include:

In millions

2013

2012

2011

Total cash provided by (used
in) financing activities

$

6.3

$

18.9

$

(78.0)

Change in short-term debt

Change in long-term debt

(2.1)

50.0

48.7

10.0

(115.8)

80.0

2013 COMPARED TO 2012. The $12.6 million decrease in 
cash provided by financing activities was primarily due to 
changes in our short-term debt balances, which decreased 
$2.1 million in 2013 compared to an increase of $48.7 
million in 2012. This decrease was partially offset by 
changes in our long-term debt balances, which increased 
due to $40 million of long-term debt retired in 2012. We 
continue to use long-term debt proceeds to finance capital 
expenditures, refinance maturing short-term or long-term 
debt maturities, and to fund other general corporate 
purposes.

2012 COMPARED TO 2011. The $97.0 million increase to 
cash provided by financing activity was primarily due to 
changes in our short-term debt balances, which increased 
$48.7 million in 2012 compared to a decrease of $115.8 
million in 2011. In 2012, we retired $40 million of long-term 
debt and issued $50 million of long-term debt. 

We have a stock repurchase program approved through 
May 2014 which provides authorization to repurchase up to 
2.8 million shares of NW Natural common stock or up to 
$100 million. The purchases may be made in the open 
market or through privately negotiated transactions. No 
repurchases were made in 2013, 2012 or 2011 under the 
program. Since the program's inception, we have 
repurchased an aggregate 2.1 million shares of common 
stock at a total cost of $83.3 million, at an average price of 
$39.19 per share. See Part II, Item 5, “Market for the 
Registrant's Common Equity, Related Stockholder Matters 
and Issuer Purchases of Equity Securities” above.

PENSION COST AND FUNDING STATUS OF QUALIFIED 
RETIREMENT PLANS. Pension costs are determined in 
accordance with accounting standards for compensation 
and retirement benefits. See “Application of Critical 
Accounting Policies and Estimates – Accounting for 
Pensions and Postretirement Benefits” below. Pension 
expense for our qualified defined benefit plan, which are 
allocated between operation and maintenance expenses, 
capital expenditures, and the deferred regulatory balancing 
account, totaled $21.5 million in 2013, an increase of $2.4 
million from 2012. The fair market value of pension assets in 
this plan increased to $267.1 million at December 31, 2013 
from $249.6 million at December 31, 2012. The increase 
was due to a return on plan assets of $22.9 million plus 
$11.7 million in employer contributions, partially offset by 
benefit payments of $17.1 million.

We make contributions to company-sponsored qualified 
defined benefit pension plans based on actuarial 
assumptions and estimates, tax regulations and funding 
requirements under federal law. Our qualified defined 
benefit pension plans were underfunded by $95.3 million at 
December 31, 2013. We plan to make contributions during 
2014 of $15 million. 

41

  
 
We also contributed to a multiemployer pension plan for our 
union employees (the Union Plan, or otherwise known as 
Western States Plan) pursuant to our collective bargaining 
agreement. We made contributions totaling $0.5 million to 
the Union Plan in 2013 and $0.4 million in 2012. Effective 
December 22, 2013, we withdrew from the plan and have 
been assessed a withdrawal liability of approximately $8.3 
million, which requires NW Natural to contribute $0.6 million 
each year to the plan for the next 20 years. See Note 8 for 
further pension disclosures.

Ratios of Earnings to Fixed Charges
For the years ended December 31, 2013, 2012, and 2011, 
our ratios of earnings to fixed charges, computed using the 
Securities and Exchange Commission (SEC) method, 
were 3.16, 3.26, and 3.38, respectively. For this purpose, 
earnings consist of net income before taxes plus fixed 
charges, and fixed charges consist of interest on all 
indebtedness, the amortization of debt expense and 
discount or premium and the estimated interest portion of 
rentals charged to income. The prior period amounts have 
been corrected for the prior period error identified in the first 
quarter of 2013. See Note 16 for detail on the prior period 
correction and Exhibit 12 for the detailed ratio calculation.

Contingent Liabilities
Loss contingencies are recorded as liabilities when it is 
probable that a liability has been incurred and the amount of 
the loss is reasonably estimable in accordance with 
accounting standards for contingencies. See Part II, Item 7, 
“Application of Critical Accounting Policies and Estimates” 
below. At December 31, 2013, we had a regulatory asset of 
$148.4 million for deferred environmental costs, which 
includes $98.1 million for additional costs expected to be 
paid in the future and $20.3 million of accrued interest. 
Additionally, in 2014, a settlement was reached in our 
environmental insurance recovery litigation with remaining 
insurers. If it is determined that insurance recoveries for 
environmental costs are insufficient and future rate recovery 
of such costs are not probable, the costs will be charged to 
expense in the period such determination is made. For 
further discussion of contingent liabilities see Note 15, for an 
update regarding insurance settlements see Note 17, and 
see also "Results of Operations—Regulatory Matters—Rate 
Mechanisms—Environmental Costs".

New Accounting Pronouncements 
For a description of recent accounting pronouncements that 
may have an impact on our financial condition, results of 
operations or cash flows, see Note 2.

42

APPLICATION OF CRITICAL ACCOUNTING POLICIES 
AND ESTIMATES

In preparing our financial statements using GAAP, 
management exercises judgment in the selection and 
application of accounting principles, including making 
estimates and assumptions that affect reported amounts of 
assets, liabilities, revenues, expenses and related 
disclosures in the financial statements. Management 
considers our critical accounting policies to be those which 
are most important to the representation of our financial 
condition and results of operations and which require 
management’s most difficult and subjective or complex 
judgments, including accounting estimates that could result 
in materially different amounts if we reported under different 
conditions or used different assumptions. Our most critical 
estimates and judgments include accounting for:
•  regulatory accounting;
•  revenue recognition;
•  derivative instruments and hedging activities;
•  pensions and postretirement benefits;
•  income taxes; and
•  environmental contingencies.

Management has discussed its current estimates and 
judgments used in the application of critical accounting 
policies with the Audit Committee of the Board. Within the 
context of our critical accounting policies and estimates, 
management is not aware of any reasonably likely events or 
circumstances that would result in materially different 
amounts being reported. For a description of recent 
accounting pronouncements that could have an impact on 
our financial condition, results of operations or cash flows, 
see Note 2.

Regulatory Accounting
Our utility is regulated by the OPUC and WUTC, which 
establish the rates and rules governing utility services 
provided to customers, and, to a certain extent, set forth 
special accounting treatment for certain regulatory 
transactions. In general, we use the same accounting 
principles as non-regulated companies reporting under 
GAAP. However, authoritative guidance for regulated 
operations (regulatory accounting) requires different 
accounting treatment for regulated companies to show the 
effects of such regulation. For example, we account for the 
cost of gas using a PGA deferral and cost recovery 
mechanism, which is submitted for approval annually to the 
OPUC and WUTC. See "Results of Operations—Regulatory 
Matters—Rate Mechanisms—Purchased Gas Adjustment" 
above. There are other expenses and revenues that the 
OPUC or WUTC may require us to defer for recovery or 
refund in future periods. Regulatory accounting requires us 
to account for these types of deferred expenses (or deferred 
revenues) as regulatory assets (or regulatory liabilities) on 
the balance sheet. When we are allowed to recover these 
regulatory assets from, or are required to refund regulatory 
liabilities to, customers, we recognize the expense or 
revenue on the income statement at the same time we 
realize the adjustment to amounts included in utility rates 
charged to customers.

43

The conditions we must satisfy to adopt the accounting policies 
and practices of regulatory accounting include:
an independent regulator sets rates;
• 
the  regulator  sets  the  rates  to  cover  specific  costs  of 
• 
delivering service; and
the service territory lacks competitive pressures to reduce 
rates below the rates set by the regulator. 

• 

Because our utility satisfies all three conditions, we continue 
to apply regulatory accounting to our utility operations. 
Future accounting changes, regulatory changes or changes 
in the competitive environment could require us to 
discontinue the application of regulatory accounting for 
some or all of our regulated businesses. This would require 
the write-off of those regulatory assets and liabilities that 
would no longer be probable of recovery from or refund to 
customers. 

Based on current accounting, regulatory and competitive 
conditions, we believe that it is reasonable to expect 
continued application of regulatory accounting for our utility 
activities, and that our regulatory assets and liabilities at 
December 31, 2013 are reasonably likely to be recovered or 
refunded through future customer rates. If we should 
determine that all or a portion of these regulatory assets or 
liabilities no longer meet the criteria for continued 
application of regulatory accounting, then we would be 
required to write-off the net unrecoverable balances against 
earnings in the period such determination is made. The net 
balance in regulatory asset and liability accounts as of 
December 31, 2013 and 2012 was $60.4 million and $125.8 
million, respectively. See Note 2 "Industry Regulation".

Revenue Recognition 
Utility and non-utility revenues, which are derived primarily 
from the sale, transportation, and storage of natural gas, are 
recognized upon the delivery of gas commodity or services 
rendered to customers. 

ACCRUED UNBILLED REVENUE. Revenues are accrued for 
gas delivered and services rendered to customers, but not 
yet billed, based on estimates from the last meter reading 
date to month end (accrued unbilled revenue). Accrued 
unbilled revenue is based on a percentage estimate of 
amounts unbilled each month, which is dependent upon a 
number of factors, some of which require management’s 
judgment. These factors include:
• 
• 
• 
•  weather. 

total gas receipts and deliveries; 
customer meter reading dates; 
customer usage patterns; and

Accrued unbilled revenue estimates are reversed the 
following month when actual billings occur. Accrued unbilled 
revenue at December 31, 2013 and 2012 was $61.5 million 
and $57.0 million, respectively. The increase in accrued 
unbilled revenue at year-end 2013 was primarily due to 
higher volumes in December 2013, reflecting colder weather 
late in the month, and higher customer billing rates.

 
The following table presents changes in key metrics if the 
estimated percentage of unbilled volume at December 31 
was adjusted up or down by 1%:

In millions

Unbilled revenue increase (decrease)
Utility margin increase (decrease) (1)

Net income increase (decrease)
(1) Includes impact of regulatory mechanisms including decoupling 
mechanism.

—

2013

Up 1%

Down 1%

$

0.6

$

(0.6)

—

—

—

SENATE BILL 408 AND 967. From 2007 through 2010, utility 
revenues included the recognition of a regulatory 
adjustment for income taxes paid (SB 408). Under Oregon 
SB 408, utilities were required to automatically implement a 
rate refund, or a rate surcharge, to utility customers on an 
annual basis. The refund or surcharge amount was based 
on estimated differences between income taxes paid and 
income taxes collected in customer rates. We recorded the 
refund, or surcharge, each quarter based on the annual 
amount to be recognized. 

In 2011, SB 967 effectively repealed SB 408. The new law 
required utilities in Oregon to reverse amounts accrued for 
the 2010 and 2011 tax years, which resulted in us recording 
a one-time pre-tax charge to earnings in the second quarter 
of 2011 in the amount of $7.4 million ($4.4 million after-tax 
or 17 cents per share). For further discussion, see "Results 
of Operations—Business Segments-Local Gas Distribution 
Utility Operations—Regulatory Adjustment for Income Taxes 
Paid" above.

NON-UTILITY REVENUES. Non-utility revenues, derived 
primarily from our gas storage segment, are recognized 
upon delivery of service to customers. Revenues from our 
asset management partner are recognized as earned based 
on multiple revenue elements, which is generally over the 
period of each asset management deal, except for contracts 
with a guaranteed amount, which are amortized pro-rata 
over the life of the contract.

Derivative Instruments and Hedging Activities  
Our gas acquisition and hedging policies set forth guidelines 
for using financial derivative instruments to support prudent 
risk management strategies. These policies specifically 
prohibit the use of derivatives for trading or speculative 
purposes. The accounting rules for determining whether a 
contract meets the definition of a derivative instrument or 
qualifies for hedge accounting treatment are complex. The 
contracts that meet the definition of a derivative instrument 
are recorded on our balance sheet at fair value. If certain 
regulatory conditions are met, then the derivative instrument 
fair value is recorded together with an offsetting entry to a 
regulatory asset or liability account pursuant to regulatory 
accounting (see Note 2, "Industry Regulation"), and no 
unrealized gain or loss is recognized in current income. The 
gain or loss from the fair value of a derivative instrument 
subject to regulatory deferral is included in the recovery 
from, or refund to, utility customers in future periods (see 
"Regulatory Accounting", above). If a derivative contract is 
not subject to regulatory deferral, then the accounting 
treatment for unrealized gains and losses is recorded in 
accordance with accounting standards for derivatives and 

44

hedging (see Note 2, "Derivatives” and "Industry 
Regulation") which is either in current income or in 
accumulated other comprehensive income (AOCI) under 
common stock equity on the balance sheet. Our derivative 
contracts outstanding at December 31, 2013 were 
measured at fair value using models or other market 
accepted valuation methodologies derived from observable 
market data. Our estimate of fair value may change 
significantly from period-to-period depending on market 
conditions and prices. These changes may have an impact 
on our results of operations, but the impact would largely be 
mitigated due to the majority of our derivative activities 
being subject to regulatory deferral treatment. For estimated 
fair value of unrealized gains and losses, see Note 13.

Commodity-based derivative contracts entered into by the 
utility after our annual PGA filing for the current gas contract 
period are subject to a regulatory incentive sharing 
mechanism in Oregon. See "Results of Operations—
Regulatory Matters—Rate Mechanisms—Purchased Gas 
Adjustment" above. The portion not deferred to a regulatory 
account pursuant to that sharing agreement is recognized 
either in current income for contracts not qualifying for 
hedge accounting or in AOCI for contracts qualifying for 
hedge accounting.

The following table summarizes the amount of gains and 
losses realized from commodity price, and currency hedge 
transactions for the last three years:

In millions

Net utility loss on:

Commodity

Swaps

Options

Total net loss realized

2013

2012

2011

$

$

(11.0) $

(69.5) $

(53.8)

—

(0.7)

(2.7)

(11.0) $

(70.2) $

(56.5)

Realized losses from commodity hedges shown above were 
recorded as increases to cost of gas and were included in 
our annual PGA rates.

Pensions and Postretirement Benefits
We maintain a qualified non-contributory defined benefit 
pension plan, several non-qualified supplemental pension 
plans for eligible executive officers and certain key 
employees, and other postretirement employee benefit 
plans covering certain non-union employees. We also have 
a qualified defined contribution plan (Retirement K Savings 
Plan) for all eligible employees. Only the qualified defined 
benefit pension plan and Retirement K Savings Plan have 
plan assets, which are held in qualified trusts to fund the 
respective retirement benefits. Effective December 31, 
2012, the defined benefit pension plans for union and non-
union employees were merged into one plan. The qualified 
defined benefit retirement plans for union and non-union 
employees were closed to new participants several years 
ago. These plans are not available to employees at any of 
our subsidiary companies. Non-union and union employees 
hired or re-hired after December 31, 2006 and 2009, 
respectively, and employees of NW Natural subsidiaries are 
provided an enhanced Retirement K Savings Plan benefit. 
The postretirement Welfare Benefit Plan for non-union 

  
  
 
  
  
employees was also closed to new participants several 
years ago.

Net periodic pension and postretirement benefit costs 
(retirement benefit costs) and projected benefit obligations 
(benefit obligations) are determined using a number of key 
assumptions including discount rates, rate of compensation 
increases, retirement ages, mortality rates and an expected 
long-term return on plan assets. See Note 8. These key 
assumptions have a significant impact on the pension 
amounts recorded and disclosed. Retirement benefit costs 
consist of service costs, interest costs, the amortization of 
actuarial gains, losses and prior service costs, the expected 
returns on plan assets and, in part, on a market-related 
valuation of assets, if applicable. The market-related asset 
valuation reflects differences between expected returns and 
actual investment returns, which we recognize over a three-
year period or less from the year in which they occur, 
thereby reducing year-to-year volatility in retirement benefit 
costs.

Accounting standards also require balance sheet 
recognition of the overfunded or underfunded status of 
pension and postretirement benefit plans in AOCI or AOCL, 
net of tax, based on the fair value of plan assets compared 
to the actuarial value of future benefit obligations. However, 
the retirement benefit costs related to our qualified defined 
benefit pension and postretirement benefit plans are 
generally recovered in utility rates, which are set based on 
accounting standards for pensions and postretirement 
benefit expenses. As such, we received approval from the 
OPUC to recognize the overfunded or underfunded status 
as a regulatory asset or regulatory liability based on 
expected rate recovery, rather than including it as AOCI or 
AOCL under common equity. See "Regulatory Accounting" 
above and Note 2, "Industry Regulation".

In 2011, we received regulatory approval from the OPUC 
and began deferring a portion of our pension expense 
above or below the amount set in rates to a regulatory 
balancing account on the balance sheet. At December 31, 
2013, the cumulative amount deferred for future pension 
cost recovery was $25.7 million. The regulatory balancing 
account includes the recognition of accrued interest on the 
account balance at the utility's actual cost of long-term debt.

A number of factors, as discussed above, are considered in 
developing pension and postretirement benefit assumptions. 
For the December 31, 2013 measurement date, we 
reviewed and updated:
• 

our weighted-average discount rate assumptions for 
pensions went from 3.85% in 2012 to 4.73% in 2013, 
and our weighted-average discount rate assumptions 
for other postretirement benefits went from 3.56% in 
2012 to 4.45% in 2013. The new rate assumptions 
were determined for each plan based on a matching of 
benchmark interest rates to the estimated cash flows, 
which reflect the timing and amount of future benefit 
payments. Benchmark interest rates are drawn from the 
Citigroup Above Median Curve, which consists of high 
quality bonds rated AA- or higher by S&P or Aa3 or 
higher by Moody’s;
our expected annual rate of future compensation 
increases, which remained unchanged at a range of 
3.25% to 5.0%;

• 

• 

• 

our expected long-term return on qualified defined 
benefit plan assets, which remained unchanged at a 
rate of 7.50%; and
other key assumptions, which were based on actual 
plan experience and actuarial recommendations.

At December 31, 2013, our net pension liability (benefit 
obligations less market value of plan assets) for the 
qualified defined benefit plan decreased $59.1 million 
compared to 2012. The decrease in our net pension liability 
is primarily due to the $41.6 million decrease in our pension 
benefit obligation and an increase of $17.5 million in plan 
assets. The liability for non-qualified plans decreased $3.2 
million, and the liability for other postretirement benefits 
decreased $4.4 million in 2013.

We determine the expected long-term rate of return on plan 
assets by averaging the expected earnings for the target 
asset portfolio. In developing our expected return, we 
analyze historical actual performance and long-term return 
projections, which gives consideration to the current asset 
mix and our target asset allocation. As of December 31, 
2013, the actual annualized returns on plan assets, net of 
management fees, for the past one-year, five-years, and 10-
years were 9.8%, 9.6%, and 5.6%, respectively.

We believe our pension assumptions to be appropriate 
based on plan design and an assessment of market 
conditions. However, the following shows the sensitivity of 
our retirement benefit costs and benefit obligations to future 
changes in certain actuarial assumptions:

Change in
Assumption

(0.25)%

Impact on
2013
Retirement
Benefit
Costs

Impact on
Retirement
Benefit
Obligations
at Dec. 31,
2013

$

1.0

$

—

—

11.4

0.7

0.7

(0.25)

0.7

N/A

Dollars in millions

Discount rate:

Qualified defined
benefit plans

Non-qualified plans

Other
postretirement
benefits

Expected long-term
return on plan assets:

Qualified defined
benefit plans

In July 2012, President Obama signed into law the MAP-21 
Act. This legislation changes several provisions affecting 
pension plans, including temporary funding relief and 
Pension Benefit Guaranty Corporation (PBGC) premium 
increases, which reduces the level of minimum required 
contributions in the near-term but generally increases 
contributions in the long-run as well as increasing the 
operational costs of running a pension plan. Prior to the 
MAP-21 Act, we were using interest rates based on a 24-
month average yield of investment grade corporate bonds 
(also referred to as "segment rate") to calculate minimum 
contribution requirements. MAP-21 Act established a new 
minimum and maximum corridor for segment rates based 
on a 25-year average of bond yields, which is to be used in 
calculating contribution requirements. In 2014, we expect to 

45

  
contribute approximately $15 million under the adjusted 24-
month segment rate using MAP-21 corridor.   

Income Taxes
We account for income taxes in accordance with accounting 
standards that require the recognition of deferred tax assets 
and liabilities for the expected future tax consequences of 
temporary differences between financial statement carrying 
amount and tax basis of assets and liabilities. Deferred tax 
assets and liabilities are measured using enacted tax rates 
expected to apply to taxable income in the years in which 
those temporary differences are expected to be recovered 
or settled. At December 31, 2013 and 2012, our net long-
term deferred tax liability totaled $486.8 million and $444.4 
million, respectively. After application of the federal statutory 
tax rate to book income, judgment is required with respect 
to the timing and deductibility of expense in our tax returns. 
For state and local income taxes, judgment is also required 
with respect to the apportionment among the various 
jurisdictions. A valuation allowance is recorded if we expect 
that it is more likely than not that our deferred tax assets will 
not be realized. At December 31, 2013, we did not record a 
valuation allowance due to our expectation that all of these 
assets and liabilities will be realized.

These accounting standards also require the recognition of 
deferred income tax assets and liabilities for temporary 
differences where regulators require us to flow through 
deferred income tax benefits or expenses in the ratemaking 
process of the regulated utility (regulatory tax assets and 
liabilities). This is consistent with the ratemaking policies of 
the OPUC and WUTC. Regulatory tax assets and liabilities 
are recorded to the extent we believe they will be 
recoverable from, or refunded to, customers in future rates. 
As part of the Oregon general rate case, the OPUC ruled 
that we cannot recover deferred amounts that represent the 
increase in deferred income taxes caused by the 2009 
Oregon tax rate change. As a result, we recognized a one 
time, after tax charge of $2.7 million in 2012 to write off the 
regulatory asset related to this rate change. At December 
31, 2013 and 2012, we had regulatory assets representing 
differences between book and tax basis related to pre-1981 
property of $56.2 million and $60.3 million, respectively, and 
recorded an offsetting deferred tax liability. We are currently 
recovering these pre-1981 deferred tax assets over a period 
of approximately 25 years. See Note 2 and Note 9.

Uncertain tax positions are accounted for in accordance 
with accounting standards that require management’s 
assessment of the expected treatment of a tax position 
taken in a filed tax return, or planned to be taken in a future 
tax return, that has not been reflected in measuring income 
tax expense for financial reporting purposes. Until such 
positions are sustained by the taxing authorities, we would 
not recognize the tax benefits resulting from such positions 
and would report the tax effect as a liability in the 
Company’s consolidated balance sheet. As of December 
31, 2013, we had no reserves for uncertain tax positions.

In 2012, the Company settled an examination of tax years 
2006 through 2009 with the state of Oregon. This settlement 
resulted in an additional $0.2 million state tax expense due 
to Oregon, including interest. However, the Company also 
filed an amended tax return with the state of California for 
tax year 2007 in which it claimed a refund of $0.2 million 

46

and recognized a reduction in state tax expense of $0.2 
million. The net effect of these two state tax changes was 
negligible. 

The Company is currently under IRS examination for tax 
years 2009-2011 and we expect resolution in 2014. The 
Company is also subject to examination for tax year 2012.
To date, the IRS has not proposed any material 
adjustments.

Interest and penalties related to any future income tax 
deficiencies would be recorded in income tax expense in 
our consolidated statements of income.

Environmental Contingencies  
Loss contingencies are recorded as liabilities when it is 
probable that a liability has been incurred and the amount of 
the loss is reasonably estimable in accordance with 
accounting standards for contingencies. Estimates of loss 
contingencies, including estimates of legal costs when such 
costs are probable of being incurred and are reasonably 
estimable and related disclosures are updated when new 
information becomes available. Estimating probable losses 
requires an analysis of uncertainties that often depends 
upon judgments about potential actions by third parties. 
Accruals for loss contingencies are recorded based on an 
analysis of potential results. When information is sufficient 
to estimate only a range of potential liabilities, and no point 
within the range is more likely than any other, we recognize 
an accrued liability at the low end of the range and disclose 
the range. See "Contingent Liabilities" above. It is possible, 
however, that the actual range of potential liabilities could be 
significantly different than estimated amounts currently 
accrued and disclosed, with the result that our financial 
condition and results of operations could be materially 
affected by changes in the assumptions or estimates related 
to these contingencies.

With respect to environmental liabilities and related costs, 
we develop estimates based on a review of information 
available from numerous sources, including completed 
studies and site specific negotiations. Using sampling data, 
feasibility studies, existing technology, and enacted laws 
and regulations, we estimate that the total future 
expenditures for environmental investigation, monitoring 
and remediation are $98.1 million as of December 31, 2013. 
It is our policy to accrue the full amount of such liability 
when information is sufficient to reasonably estimate the 
amount of probable liability. When information is not 
available to reasonably estimate the probable liability, or 
when only the range of probable liabilities can be estimated 
and no amount within the range is more likely than another, 
then it is our policy to accrue at the low end of the range. 
Accordingly, due to numerous uncertainties surrounding the 
course of environmental remediation and the preliminary 
nature of several site investigations, in some cases, we may 
not be able to reasonably estimate the high end of the range 
of possible loss. In those cases we have disclosed the 
nature of the potential loss and the fact that the high end of 
the range cannot be reasonably estimated.

We continue to seek recovery of such costs through 
insurance and through customer rates, and we believe 
recovery of these costs is probable. In 2014, a settlement 
was reached in our environmental insurance recovery 

 
 
 
 
 
litigation with remaining insurers. In addition, we have a new 
SRRM in Oregon with a proceeding currently open to 
resolve implementation issues including the prudence of 
deferred costs, the allocation of insurance proceeds, and an 
earnings test that would be applied to past and future 
deferred costs. As there is uncertainty surrounding this 
mechanism and the open proceeding, we will continue to 
carefully assess these environmental assets for 
recoverability. If it is determined that insurance recoveries 
for environmental costs are insufficient and future rate 
recovery of such costs are not probable, the costs will be 
charged to expense in the period such determination is 
made. See "Results of Operations—Rate Matters—Rate 
Mechanisms—Environmental Costs" above, Note 15, and 
Note 17.

ITEM 7A. QUANTITATIVE AND QUALITATIVE 
DISCLOSURES ABOUT MARKET RISK

We are exposed to various forms of market risk including 
commodity supply risk, commodity price risk, interest rate 
risk, foreign currency risk, credit risk and weather risk. The 
following describes our exposure to these risks.

Commodity Supply Risk
We enter into spot, short-term, and long-term natural gas 
supply contracts, along with associated pipeline 
transportation contracts, to manage our commodity supply 
risk. Historically, we have arranged for physical delivery of 
an adequate supply of gas, including gas in our Mist storage 
facility, to meet expected requirements of our core utility 
customers. Our gas purchase contracts are primarily index-
based and subject to monthly re-pricing, a strategy that is 
intended to substantially mitigate credit exposure to our 
physical gas counterparties.

Commodity Price and Storage Value Risk
Natural gas commodity prices and storage values are 
subject to market fluctuations due to unpredictable factors 
including weather, pipeline transportation congestion, drilling 
technologies, potential market speculation and other factors 
that affect supply and demand. In addition to managing 
storage positions through a combination of short- and long-
term fixed price contracts, we use financial swap and option 
contracts to convert certain natural gas supply contracts 
from floating prices to fixed or capped prices. We also 
manage risk with physical gas reserves from a long-term 
investment in working interests in gas leases operated by 
Encana. These financial hedge contracts and gas reserve 
volumes are generally included in our annual PGA filing for 
recovery, subject to a regulatory prudence review. We also 
regularly monitor and manage the financial exposure and 
liquidity risk of our storage position.

Interest Rate Risk
We are exposed to interest rate risk primarily associated 
with new debt financing needed to fund capital 
requirements, including future contractual obligations and 
maturities of long-term and short-term debt. Interest rate risk 

is primarily managed through the issuance of fixed-rate debt 
with varying maturities. We may also enter into financial 
derivative instruments, including interest rate swaps, options 
and other hedging instruments, to manage and mitigate 
interest rate exposure.

Foreign Currency Risk
The costs of certain natural gas commodity supplies and 
certain pipeline services purchased from Canadian 
suppliers are subject to changes in the value of the 
Canadian currency in relation to the U.S. currency. Foreign 
currency forward contracts are used to hedge against 
fluctuations in exchange rates for our commodity and 
commodity-related demand charges paid in Canadian 
dollars. If all of the foreign currency forward contracts had 
been settled on December 31, 2013, a loss of $0.3 million 
would have been realized. See Note 13.

Credit Risk
CREDIT EXPOSURE TO NATURAL GAS SUPPLIERS. Certain 
gas suppliers have either relatively low credit ratings or are 
not rated by major credit rating agencies. To manage this 
supply risk, we purchase gas from a number of different 
suppliers at liquid exchange points. We evaluate and 
monitor suppliers’ creditworthiness and maintain the ability 
to require additional financial assurances, including 
deposits, letters of credit, or surety bonds, in case a supplier 
defaults. In the event of a supplier’s failure to deliver 
contracted volumes of gas, the regulated utility would need 
to replace those volumes at prevailing market prices, which 
may be higher or lower than the original transaction prices. 
We expect these costs would be subject to our PGA sharing 
mechanism discussed above. Since most of our commodity 
supply contracts are priced at the monthly market index 
price tied to liquid exchange points, and we have adequate 
storage flexibility, we believe that it is unlikely that a supplier 
default would have an adverse effect on our financial 
condition or results of operations.

CREDIT EXPOSURE TO FINANCIAL DERIVATIVE 
COUNTERPARTIES. Based on estimated fair value at 
December 31, 2013, our overall credit exposure relating to 
commodity contracts is considered to be immaterial as it 
reflects amounts we owed to our financial derivative 
counterparties (see table below). However, changes in 
natural gas prices could result in counterparties owing us 
money. Therefore, our financial derivatives policy requires 
counterparties to have at least an investment-grade credit 
rating at the time the derivative instrument is entered into 
and specific limits on the contract amount and duration 
based on each counterparty’s credit rating. Due to potential 
changes in market conditions and credit concerns, we 
continue to enforce strong credit requirements. We actively 
monitor and manage our derivative credit exposure and 
place counterparties on hold for trading purposes or require 
cash collateral, letters of credit, or guarantees as 
circumstances warrant. As of December 31, 2013, actual 
financial swap and option derivative credit risk exposure 
totals $5.4 million, which reflects amounts that  
counterparties owe to us.

47

  
  
  
 
  
 
The following table summarizes our overall financial swap 
and option credit exposure, based on estimated fair value, 
and the corresponding counterparty credit ratings. The table 
uses credit ratings from S&P and Moody’s, reflecting the 
higher of the S&P or Moody’s rating or a middle rating if the 
entity is split-rated with more than one rating level 
difference:

In millions

AAA/Aaa

AA/Aa

A/A

BBB/Baa

Total

Financial Derivative Position by Credit Rating
Unrealized Fair Value Gain (Loss)

2013

2012

$

$

— $

4.5

0.9

—

5.4

$

—

(5.0)

—

—

(5.0)

In most cases, we also mitigate the credit risk of financial 
derivatives by having master netting arrangements with our 
counterparties which provide for making or receiving net 
cash settlements. Generally, transactions of the same type 
in the same currency that have a settlement on the same 
day with a single counterparty are netted and a single 
payment is delivered or received depending on which party
is due funds.

 Additionally we have master contracts in place with each 
of our derivative counterparties that include provisions for 
posting or calling for collateral. Generally we can obtain 
cash or marketable securities as collateral with one day’s 
notice. We use various collateral management strategies to 
reduce liquidity risk. The collateral provisions vary by 
counterparty but are not expected to result in the significant 
posting of collateral, if any. We have performed stress tests 
on the portfolio and concluded that the liquidity risk from 
collateral calls is not material. Our derivative credit exposure 
is primarily with investment grade counterparties rated AA-/
Aa3 or higher. Contracts are diversified across 
counterparties to reduce credit and liquidity risk.

CREDIT EXPOSURE TO INSURANCE COMPANIES FOR 
ENVIRONMENTAL DAMAGE CLAIMS. We regularly monitor 
the financial condition of insurance companies who provide 
or provided general liability insurance policy coverage to 

NW Natural and its predecessors with respect to 
environmental damage claims. We have filed claims for our 
environmental costs with a number of insurance companies. 
The majority of these companies have credit ratings of A or 
better from A.M. Best Co. (AM Best). AM Best is a global 
independent credit rating agency who has provided 
quantitative and qualitative analysis of insurance company 
balance sheet strength for over 100 years. AM Best uses a 
rating scale that ranges from A++ (Superior financial 
strength) to F (In Liquidation), with a rating of A considered 
Excellent. A strong credit rating from AM Best is not a 
guarantee that an insurance company will be able to meet 
its contractual obligations. The remaining insurance 
companies who do not have credit ratings of A or better are 
expected to have sufficient funds in reserves to cover these 
claims. Our credit exposure to insurance companies for 
environmental claims could be material; however, we have 
recently settled with remaining insurers for these claims with 
payment expected in 2014. See Note 17. In the event we 
are unable to recover environmental expenses from these 
insurance policies, we will seek recovery of unreimbursed 
amounts through customer rates.

Weather Risk 
We are exposed to weather risk primarily from our regulated 
utility business. A large percentage of our utility margin is 
volume driven, and current rates are based on an 
assumption of average weather. We have a weather 
normalization mechanism for residential and commercial 
customers, which is intended to stabilize the recovery of our 
utility’s fixed costs and reduce fluctuations in customers’ 
bills due to colder or warmer than average weather. 
Customers in Oregon are allowed to opt out of the weather 
normalization mechanism. As of December 31, 2013, 
approximately 8% of our Oregon customers had opted out. 
In addition to the Oregon customers opting out, our 
Washington residential and commercial customers account 
for approximately 10% of our total customer base and are 
not covered by weather normalization. The combination of 
Oregon and Washington customers not covered by a 
weather normalization mechanism is less than 20% of all 
residential and commercial customers. See "Results of 
Operations—Regulatory Matters—Rate Mechanism—
Weather Normalization Tariff" above.

48

[THIS PAGE INTENTIONALLY LEFT BLANK]

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

TABLE OF CONTENTS

1.

2.

3.

4.

5.

Management's Report on Internal Control Over Financial Reporting

Report of Independent Registered Public Accounting Firm

Consolidated Financial Statements:

Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2013, 2012, and 2011

Consolidated Balance Sheets at December 31, 2013 and 2012

Consolidated Statements of Shareholders' Equity for the Years Ended December 31, 2013, 2012, and 2011

Consolidated Statements of Cash Flows for the Years Ended December 31, 2013, 2012, and 2011

Notes to Consolidated Financial Statements

Quarterly Financial Information (Unaudited)

Supplementary Data for the Years Ended December 31, 2013, 2012, and 2011:

Financial Statement Schedule

Schedule II - Valuation and Qualifying Accounts and Reserves

Supplemental Schedules Omitted

Page

50

51

52

53

55

56

57

86

86

All other schedules are omitted because of the absence of the conditions under which they are required or because the required 
information is included elsewhere in the financial statements.

49

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in 
Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended. Our internal control over financial 
reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of 
financial statements for external purposes in accordance with generally accepted accounting principles in the United States of 
America (GAAP). Our internal control over financial reporting includes those policies and procedures that:

(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 
involving company assets;

(ii) provide reasonable assurance that transactions are recorded as necessary to permit the preparation of financial statements 
in accordance with GAAP, and that receipts and expenditures are being made only in accordance with authorizations of 
management and the Board of Directors; and

(iii) provide reasonable assurance regarding prevention or timely detection of the unauthorized acquisition, use or disposition of 
our assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements or fraud. 
Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2013. In making this 
assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway 
Commission (COSO) in Internal Control-Integrated Framework (1992).

Based on our assessment and those criteria, management has concluded that we maintained effective internal control over 
financial reporting as of December 31, 2013.

The effectiveness of internal control over financial reporting as of December 31, 2013 has been audited by 
PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which appears in this 
annual report.

/s/ Gregg S. Kantor        
Gregg S. Kantor
President and Chief Executive Officer

/s/ Stephen P. Feltz     
Stephen P. Feltz
Senior Vice President and Chief Financial Officer

February 28, 2014

50

 
 
 
  
 
 
 
 
  
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of
Northwest Natural Gas Company:

In our opinion, the consolidated financial statements listed in the accompanying table of contents present fairly, in all material 
respects, the financial position of Northwest Natural Gas Company and its subsidiaries at December 31, 2013 and 2012, and the 
results of their operations and their cash flows for each of the three years in the period ended December 31, 2013 in conformity 
with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement 
schedule listed in the accompanying table of contents presents fairly, in all material respects, the information set forth therein 
when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company maintained, in all 
material respects, effective internal control over financial reporting as of December 31, 2013, based on criteria established in 
Internal Control - Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway 
Commission (COSO). The Company's management is responsible for these financial statements and financial statement 
schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal 
control over financial reporting, included in the accompanying Management's Report on Internal Control over Financial 
Reporting. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on 
the Company's internal control over financial reporting based on our integrated audits. We conducted our audits in accordance 
with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan 
and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement 
and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial 
statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, 
assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial 
statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal 
control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and 
operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other 
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our 
opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that 
(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 
of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit 
preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and 
expenditures of the company are being made only in accordance with authorizations of management and directors of the 
company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or 
disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Portland, Oregon
February 28, 2014 

51

 
  
 
 
 
NORTHWEST NATURAL GAS COMPANY
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

In thousands, except per share data

Operating revenues

Operating expenses:

Cost of gas

Operations and maintenance

General taxes

Depreciation and amortization

Total operating expenses

Income from operations

Other income and expense, net

Interest expense, net

Income before income taxes

Income tax expense

Net income

Other comprehensive income:

Change in employee benefit plan liability, net of taxes of ($1,304) for 2013,
$1,339 for 2012, and $1,161 for 2011
Amortization of non-qualified employee benefit plan liability, net of taxes of ($608)
for 2013, ($434) for 2012, and ($383) for 2011

Comprehensive income

Average common shares outstanding:

Basic

Diluted

Earnings per share of common stock:

Basic

Diluted

Dividends declared per share of common stock

Year Ended December 31,

2013

2012

2011

$ 758,518

$ 730,607

$ 828,055

373,298

136,613

29,956

75,905

615,772

142,746

4,669

45,172

355,335

129,477

30,598

73,017

588,427

142,180

3,159

43,157

458,508

125,417

29,281

70,004

683,210

144,845

3,112

42,088

102,243

102,182

105,869

41,705

60,538

43,403

58,779

42,825

63,044

1,998

(2,156)

(1,779)

935

665

583

$

63,471

$

57,288

$

61,848

26,974

27,027

26,831

26,907

26,687

26,744

$

$

2.24

2.24

1.83

$

2.19

2.18

1.79

2.36

2.36

1.75

See Notes to Consolidated Financial Statements

52

NORTHWEST NATURAL GAS COMPANY
CONSOLIDATED BALANCE SHEETS

In thousands

Assets:

Current assets:

Cash and cash equivalents

Accounts receivable

Accrued unbilled revenue

Allowance for uncollectible accounts

Regulatory assets

Derivative instruments

Inventories

Gas reserves

Income taxes receivable

Deferred tax assets

Other current assets

Total current assets

Non-current assets:

Property, plant, and equipment

Less: Accumulated depreciation

Total property, plant, and equipment, net

Gas reserves

Regulatory assets

Derivative instruments

Other investments

Restricted cash

Other non-current assets

Total non-current assets

Total assets

As of December 31,

2013

2012

$

9,471

$

81,889

61,527

(1,656)

22,635

5,311

60,669

20,646

3,534

45,241

21,181

330,448

8,923

61,229

56,955

(2,518)

52,448

1,950

67,602

14,966

2,552

—

19,592

283,699

2,918,739

2,786,008

855,865

812,396

2,062,874

1,973,612

121,998

369,603

1,880

67,851

4,000

12,257

84,693

382,255

3,639

67,667

4,000

13,555

2,640,463

2,529,421

$

2,970,911

$

2,813,120

See Notes to Consolidated Financial Statements

53

NORTHWEST NATURAL GAS COMPANY
CONSOLIDATED BALANCE SHEETS

In thousands

Liabilities and equity:

Current liabilities:

Short-term debt

Current maturities of long-term debt

Accounts payable

Taxes accrued

Interest accrued

Regulatory liabilities

Derivative instruments

Other current liabilities

Total current liabilities

Long-term debt

Deferred credits and other non-current liabilities:

Deferred tax liabilities

Regulatory liabilities

Pension and other postretirement benefit liabilities

Derivative instruments

Other non-current liabilities

Total deferred credits and other non-current liabilities

Commitments and contingencies (see Note 14 and Note 15)

Equity:

Common stock - no par value; authorized 100,000 shares; issued and outstanding 27,075
and 26,917 at December 31, 2013 and 2012, respectively

Retained earnings

Accumulated other comprehensive loss

Total equity

Total liabilities and equity

See Notes to Consolidated Financial Statements

As of December 31,

2013

2012

$

188,200

$

190,250

60,000

96,126

10,856

7,103

28,335

1,891

40,280

432,791

681,700

532,036

303,485

149,354

615

119,058

—

85,613

9,588

5,953

20,792

10,796

45,444

368,436

691,700

444,377

288,113

215,792

578

74,497

1,104,548

1,023,357

—

—

364,549

393,681

(6,358)

751,872

356,571

382,347

(9,291)

729,627

$

2,970,911

$

2,813,120

54

 
NORTHWEST NATURAL GAS COMPANY
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY

In thousands

Balance at Dec. 31, 2010

   Comprehensive income (loss)

   Dividends paid on common stock

   Tax expense from employee stock option plan

   Stock-based compensation

   Issuance of common stock

   Common stock expense

Balance at Dec. 31, 2011

   Comprehensive income (loss)

   Dividends paid on common stock

   Tax expense from employee stock option plan

   Stock-based compensation

   Issuance of common stock

Balance at Dec. 31, 2012

   Comprehensive income

   Dividends paid on common stock

   Tax expense from employee stock option plan

   Stock-based compensation

   Issuance of common stock

Balance at Dec. 31, 2013

Common
Stock

Retained
Earnings

Accumulated
Other
Comprehensive
Income (Loss)

Total
Equity

$

342,978

$

355,251

$

(6,604) $

691,625

—

—

(26)

1,769

3,632

30

348,383

—

—

(149)

1,291

7,046

356,571

—

—

(242)

2,169

6,051

63,044

(46,690)

—

—

—

(30)

371,575

58,779

(48,007)

—

—

—

382,347

60,538

(49,204)

—

—

—

(1,196)

—

—

—

—

—

(7,800)

(1,491)

—

—

—

—

(9,291)

2,933

—

—

—

—

61,848

(46,690)

(26)

1,769

3,632

—

712,158

57,288

(48,007)

(149)

1,291

7,046

729,627

63,471

(49,204)

(242)

2,169

6,051

$

364,549

$

393,681

$

(6,358) $

751,872

See Notes to Consolidated Financial Statements

55

NORTHWEST NATURAL GAS COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS

In thousands

Operating activities:

Net income

Adjustments to reconcile net income to cash provided by operations:

Depreciation and amortization

Regulatory amortization of gas reserves

Deferred tax liabilities, net

Non-cash expenses related to qualified defined benefit pension plans

Contributions to qualified defined benefit pension plans

Deferred environmental expenditures, net of recoveries

Other

Changes in assets and liabilities:

Receivables

Inventories

Taxes accrued

Accounts payable

Interest accrued

Deferred gas costs

Other, net

Cash provided by operating activities

Investing activities:

Capital expenditures

Utility gas reserves

Proceeds from sale of assets

Restricted cash

Other

Cash used in investing activities

Financing activities:

Common stock issued, net

Long-term debt issued

Long-term debt retired

Change in short-term debt

Cash dividend payments on common stock

Other

Cash provided by (used in) financing activities

Increase in cash and cash equivalents

Cash and cash equivalents, beginning of period

Cash and cash equivalents, end of period

Supplemental disclosure of cash flow information:

Interest paid

Income taxes paid

See Notes to Consolidated Financial Statements

56

Year Ended December 31,

2013

2012

2011

$ 60,538

$ 58,779

$ 63,044

75,905

11,089

46,483

5,666

73,017

6,340

42,079

5,448

70,004

1,143

46,319

7,191

(11,700)

(23,500)

(22,045)

(16,679)

(12,503)

25,586

(2,580)

(2,350)

(863)

(26,094)

22,170

(6,246)

6,933

286

7,422

1,150

6,761

3,334

(602)

96

(5,245)

(17,644)

23,216

7,413

6,022

34,189

148

675

8,565

(270)

176,390

168,838

233,462

(138,924)

(132,029)

(100,534)

(54,077)

(54,085)

(50,597)

8,638

—

2,231

—

—

1,437

—

(3,076)

1,142

(182,132)

(184,677)

(153,065)

5,964

50,000

6,758

50,000

3,040

90,000

—

(40,000)

(10,000)

(2,050)

48,650

(115,835)

(49,204)

(48,007)

(46,690)

1,580

6,290

548

8,923

1,528

18,929

3,090

5,833

$

9,471

$

8,923

$

1,464

(78,021)

2,376

3,457

5,833

$ 44,022

$ 43,061

$ 41,413

870

2,979

1,756

NORTHWEST NATURAL GAS 
COMPANY
NOTES TO CONSOLIDATED FINANCIAL 
STATEMENTS

1. ORGANIZATION AND PRINCIPLES OF 
CONSOLIDATION

The accompanying consolidated financial statements 
represent the consolidated results of Northwest Natural Gas 
Company (NW Natural or the Company) and all companies 
that we directly or indirectly control, either through majority 
ownership or otherwise. We have two core businesses: our 
regulated local gas distribution business, referred to as the 
utility segment, which serves residential, commercial, and 
industrial customers in Oregon and southwest Washington; 
and our gas storage businesses, referred to as the gas 
storage segment, which provides storage services for 
utilities, gas marketers, electric generators, and large 
industrial users from storage facilities located in Oregon and 
California. In addition, we have investments and other non-
utility activities that we aggregate and report as other. 

Our direct and indirect wholly-owned subsidiaries include 
NW Natural Energy, LLC (NWN Energy), NW Natural Gas 
Storage, LLC (NWN Gas Storage), Gill Ranch Storage, LLC 
(Gill Ranch), NNG Financial Corporation (NNG Financial), 
Northwest Energy Corporation (Energy Corp), and NW 
Natural Gas Reserves, LLC (NWN Gas Reserves). 
Investments in corporate joint ventures and partnerships 
that we do not directly or indirectly control, and for which we 
are not the primary beneficiary, are accounted for under the 
equity method, which includes NWN Energy’s investment in 
Palomar Gas Holdings, LLC (PGH) and NNG Financial's 
investment in Kelso-Beaver (KB) Pipeline. NW Natural and 
its affiliated companies are collectively referred to herein as 
NW Natural. The consolidated financial statements are 
presented after elimination of all significant intercompany 
balances and transactions, except for amounts required to 
be included under regulatory accounting standards to reflect 
the effect of such regulation. In this report, the term “utility” 
is used to describe our regulated gas distribution business, 
and the term “non-utility” is used to describe our gas storage 
businesses and other non-utility investments and business 
activities.

During the first quarter of 2013, we identified an error in the 
rate used to calculate interest on regulatory assets. We 
assessed the materiality of this error on prior period 
financial statements and concluded it was not material to 
any prior annual or interim periods; however, the cumulative 
impact would have been material to the annual and interim 
periods for 2013, if corrected in 2013. As a result, in 
accordance with accounting standards, we have revised our 
prior period financial statements as shown in Note 16 to 
correct this error. 

57

Certain prior year balances in our consolidated financial 
statements and notes have been reclassified to conform 
with the current presentation. These reclassifications had no 
impact on our prior year’s consolidated results of 
operations, financial condition or cash flows.

2. SIGNIFICANT ACCOUNTING POLICIES UPDATE

Use of Estimates 
The preparation of financial statements in conformity with 
generally accepted accounting principles in the United 
States of America (GAAP) requires management to make 
estimates and assumptions that affect reported amounts in 
the consolidated financial statements and accompanying 
notes. Actual amounts could differ from those estimates, and 
changes would most likely be reported in future periods. 
Management believes that the estimates and assumptions 
used are reasonable.

Industry Regulation  
Our principal businesses are the distribution of natural gas, 
which is regulated by the OPUC and WUTC, and natural gas 
storage services, which are regulated by either the FERC or 
the CPUC, and to a certain extent by the OPUC. Accounting 
records and practices of our regulated businesses conform 
to the requirements and uniform system of accounts 
prescribed by these regulatory authorities in accordance with 
GAAP. Our businesses regulated by the OPUC, WUTC and 
FERC earn a reasonable return on invested capital from 
approved cost-based rates, while our business regulated by 
the CPUC earns a return to the extent we are able to charge 
competitive prices above our costs (i.e. market-based rates).

In applying regulatory accounting principles, we capitalize or 
defer certain costs and revenues as regulatory assets and 
liabilities pursuant to orders of the OPUC or WUTC, which 
provides for the recovery of revenues or expenses from, or 
refunds to, utility customers in future periods, including a 
return or a carrying charge in certain cases.

  
 
The amortization period for our regulatory assets and 
liabilities ranges from less than one year to an 
indeterminable period. Our regulatory deferrals for gas costs 
payable are generally amortized over 12 months beginning 
each November 1 following the gas contract year during 
which the deferred gas costs are recorded. Similarly, most of 
our regulatory deferred accounts are amortized over 12 
months. However, certain regulatory account balances, such 
as income taxes, environmental costs, pension liabilities and 
accrued asset removal costs, are large and tend to be 
amortized over longer periods once we have agreed upon an 
amortization period with the respective regulatory agency.

We believe all costs incurred and deferred at December 31, 
2013 are prudent. We annually review all regulatory assets 
and liabilities for recoverability and more often if 
circumstances warrant. If we should determine that all or a 
portion of these regulatory assets or liabilities no longer meet 
the criteria for continued application of regulatory 
accounting, then we would be required to write off the net 
unrecoverable balances in the period such determination is 
made.

New Accounting Standards 

Recently Adopted Standards
BALANCE SHEET OFFSETTING. In December 2011, the 
Financial Accounting Standards Board (FASB) issued 
authoritative guidance regarding the offsetting of assets and 
liabilities on the balance sheet. The standard is intended to 
provide more comparable guidance between the GAAP and 
international accounting standards by requiring entities to 
disclose both gross and net amounts for assets and liabilities 
offset on the balance sheet as well as other disclosures 
concerning their enforceable master netting arrangements. 
This guidance was effective for annual reporting periods 
beginning on or after January 1, 2013. The adoption of this 
standard did not have a material effect on our financial 
statement disclosures. See Note 13.

RECLASSIFICATIONS FROM ACCUMULATED OTHER 
COMPREHENSIVE INCOME. In February 2013, the FASB 
issued authoritative guidance, which requires an entity to 
present significant amounts reclassified from each 
component of accumulated other comprehensive income 
(AOCI). This standard is intended to improve the reporting of 
these reclassifications by presenting the information 
concerning amounts reclassified into net income from AOCI 
in a single location. This information has historically has 
been presented throughout the financial statements. This 
guidance was effective for reporting periods beginning after 
December 15, 2012. The adoption of this standard did not 
have a material effect on our financial statement disclosures. 
See Note 8.

At December 31, the amounts deferred as regulatory assets 
and liabilities were as follows:

In thousands

Current:

Unrealized loss on derivatives(1)
Other(2)

Total current

Non-current:

Unrealized loss on derivatives(1)
Pension balancing(3)

Income tax asset

Pension and other postretirement 
benefit liabilities(3)
Environmental costs(4)
Other(2)

Regulatory Assets

2013

2012

$

1,891

$ 10,796

20,744

41,652

$ 22,635

$ 52,448

$

615

$

578

25,713

51,814

14,727

55,879

125,855

182,688

148,389

121,144

17,217

7,239

Total non-current

$ 369,603

$ 382,255

In thousands

Current:

Gas costs
Unrealized gain on derivatives(1)
Other(2)

Total current

Non-current:

Gas costs
Unrealized gain on derivatives(1)

Accrued asset removal costs
Other(2)

Regulatory Liabilities

2013

2012

$

7,510

$

9,100

5,290

15,535

1,950

9,742

$ 28,335

$ 20,792

$

2,172

$

—

1,880

3,639

296,294

281,213

3,139

3,261

Total non-current

$ 303,485

$ 288,113

(1)  Unrealized gains or losses on derivatives are non-cash items 
and, therefore, do not earn a rate of return or a carrying 
charge. These amounts are recoverable through utility rates as 
part of the annual PGA mechanism when realized at 
settlement.

(2)  Other primarily consists of several deferrals and amortizations 

under other approved regulatory mechanisms. The accounts 
being amortized typically earn a rate of return or carrying 
charge. 

(3)  Certain utility pension costs are approved for regulatory 

deferral, including amounts recorded to the pension balancing 
account, to mitigate the effects of higher and lower pension 
expenses. Pension costs that are deferred include an interest 
component when recognized in net periodic benefit costs. See 
Note 8.

(4)  Environmental costs relate to specific sites approved for 

regulatory deferral by the OPUC and WUTC. In Oregon, we 
earn a carrying charge on amounts paid, whereas amounts 
accrued but not yet paid do not earn a carrying charge until 
expended. In Washington, a carrying charge related to deferred 
amounts will be determined in a future proceeding. For further 
information on environmental matters, see Note 15. 

58

Recently Issued Accounting Pronouncements
OBLIGATIONS RESULTING FROM JOINT AND SEVERAL 
LIABILITY ARRANGEMENTS. In February 2013, the FASB 
issued guidance regarding the recognition, measurement 
and disclosure of obligations resulting from joint and several 
liability arrangements for which the total amount of the 
obligation is fixed at the reporting date. Under the new 
guidance, an entity is required to measure fixed obligations 
as the sum of the amount the reporting entity agreed to pay 
on the basis of its arrangement among its co-obligors plus 
any additional amount the reporting entity expects to pay on 
behalf of its co-obligors. In addition, an entity must disclose 
the nature and amount of the obligation as well as other 
information about the obligations. The guidance is effective 
for fiscal years, and interim periods within those years, 
beginning after December 15, 2013. We are currently 
assessing the impact, if any, of this guidance on our financial 
position, results of operations, or disclosures.

PRESENTATION OF UNRECOGNIZED TAX BENEFIT. In July 
2013, the FASB issued guidance that requires an 
unrecognized tax benefit, or a portion of an unrecognized tax 
benefit, be presented in the financial statements as a 
reduction to a deferred tax asset for a net operating loss 
carryforward, a similar tax loss, or a tax credit carryforward, 
except under certain circumstances. The new guidance is 
effective for fiscal years and interim periods within those 
years, beginning after December 15, 2013. This guidance is 
not expected to have an impact on our financial position, 
results of operations, and disclosures.

Accounting Policies

Plant, Property and Accrued Asset Removal Costs 
Plant and property are stated at cost, including capitalized 
labor, materials and overhead. In accordance with regulatory 
accounting standards, the cost of acquiring and constructing 
long-lived plant and property generally includes an 
allowance for funds used during construction (AFUDC) or 
capitalized interest. AFUDC represents the regulatory 
financing cost incurred when debt and equity funds are used 
for construction (see “Allowance for Funds Used During 
Construction” below). When constructed assets are subject 
to market-based rates rather than cost-based rates, the 
financing costs incurred during construction are included in 
capitalized interest in accordance with GAAP, not as 
regulatory financing costs under AFUDC.

In accordance with long-standing regulatory treatment, our 
depreciation rates consist of three components: one based 
on the average service life of the asset, a second based on 
the estimated salvage value of the asset, and a third based 
on the asset’s estimated cost of removal. We collect, through 
rates, the estimated cost of removal on certain regulated 
properties through depreciation expense, with a 
corresponding offset to accumulated depreciation. These 
removal costs are non-legal obligations as defined by 
regulatory accounting guidance. Therefore, we have 
included these costs as non-current regulatory liabilities 
rather than as accumulated depreciation on our consolidated 
balance sheets. In the rate setting process, the liability for 
removal costs is treated as a reduction to the net rate base 
upon which the regulated utility has the opportunity to earn 
its allowed rate of return.

59

The costs of utility plant retired or otherwise disposed of are 
removed from utility plant and charged to accumulated 
depreciation for recovery or refund through future rates. 
Gains from the sale of regulated assets are generally 
deferred and refunded to customers. For non-utility assets, 
we record a gain or loss upon the disposal of the property 
that is recorded in other income and expense, net in the 
consolidated statements of comprehensive income.

Our provision for depreciation of utility property, plant and 
equipment is recorded under the group method on a straight-
line basis with rates computed in accordance with 
depreciation studies approved by regulatory authorities. The 
weighted average depreciation rate for utility assets in 
service was approximately 2.8% in 2013, 2012, and 2011, 
reflecting the approximate weighted average economic life of 
the property. This includes 2013 weighted average 
depreciation rates for the following asset categories: 2.7% 
for transmission and distribution plant, 2.2% for gas storage 
facilities, 4.3% for general plant, and 4.1% for intangible and 
other fixed assets.

AFUDC. Certain additions to utility plant include AFUDC, 
which represents the net cost of debt and equity funds used 
during construction. AFUDC is calculated using actual 
interest rates for debt and authorized rates for ROE, if 
applicable. If short-term debt balances are less than the total 
balance of construction work in progress, then a composite 
AFUDC rate is used to represent interest on all debt funds, 
shown as a reduction to interest charges, and on ROE 
funds, shown as other income. While cash is not 
immediately recognized from recording AFUDC, it is realized 
in future years through rate recovery resulting from the 
higher utility cost of service. Our composite AFUDC rates 
were 0.3% in 2013 and 2012, and 0.5% in 2011.

IMPAIRMENT OF LONG-LIVED ASSETS. We review the 
carrying value of long-lived assets whenever events or 
changes in circumstances indicate that the carrying amount 
of the assets might not be recoverable. Factors that would 
necessitate an impairment assessment of long-lived assets 
include a significant adverse change in the extent or manner 
in which the asset is used, a significant adverse change in 
legal factors or business climate that could affect the value of 
the asset, or a significant decline in the observable market 
value or expected future cash flows of the asset, among 
others. 

If such factors indicate a potential impairment, we assess the 
recoverability by determining if the carrying value of the 
asset exceeds the sum of the projected future cash flows 
over the remaining economic life of the asset. An asset is 
determined to be impaired when the carrying value is not 
recoverable through undiscounted future cash flows, and in 
those cases, we would estimate the fair value of the asset 
using appropriate valuation methodologies, which may 
include an estimate of discounted cash flows. Any 
impairment would be measured as the difference between 
the asset’s carrying amount and its estimated fair value.

While we determined there were no material impairments of 
long-lived assets during the year ended December 31, 2013, 
if our gas storage facilities experience sustained decreases 
in future cash flows due to a prolonged, slow recovery of the 

 
  
gas storage market, future assessments could result in an 
impairment.

Cash and Cash Equivalents  
For purposes of reporting cash flows, cash and cash 
equivalents include cash on hand plus highly liquid 
investment accounts with original maturity dates of three 
months or less. At December 31, 2013 and 2012, 
outstanding checks of approximately $2.8 million and $2.3 
million, respectively, were included in accounts payable.

Revenue Recognition and Accrued Unbilled Revenue
Utility revenues, derived primarily from the sale and 
transportation of natural gas, are recognized upon delivery of 
gas commodity or service to customers. Revenues include 
accruals for gas delivered but not yet billed to customers 
based on estimates of deliveries from meter reading dates to 
month end (accrued unbilled revenue). Accrued unbilled 
revenue is dependent upon a number of factors that require 
management’s judgment, including total gas receipts and 
deliveries, customer use by billing cycle and weather factors. 
Accrued unbilled revenue is reversed the following month 
when actual billings occur. Our accrued unbilled revenue at 
December 31, 2013 and 2012 was $61.5 million and $57.0 
million, respectively.

From 2007 through 2010, utility margin also included the 
recognition of a regulatory adjustment for income taxes paid 
pursuant to a legislative rule (commonly referred to as SB 
408) in effect for certain gas and electric utilities in Oregon. 
In 2011, SB 408 was repealed and replaced by Senate Bill 
SB 967. SB 967 required utilities to eliminate amounts 
accrued under SB 408, which resulted in a one-time pre-tax 
charge of $7.4 million in 2011.

Non-utility revenues are derived primarily from the gas 
storage segment. At our Mist underground storage facility, 
revenues are recognized upon delivery of services to 
customers. At our Gill Ranch facility, firm storage services 
resulting from short-term and long-term contracts are 
typically recognized in revenue ratably over the term of the 
contract regardless of the actual storage capacity utilized. In 
addition, we also have asset management service revenue 
primarily from an independent energy marketing company 
that optimizes commodity and pipeline capacity release 
transactions. Under this agreement, guaranteed asset 
management revenue is recognized using a straight-line, 
pro-rata methodology over the term of each contract. 
Revenues earned above the guaranteed amount are 
recognized as they are earned. See Note 4.

Revenue Taxes 
Revenue-based taxes are primarily franchise taxes, which 
are collected from customers and remitted to taxing 
authorities. Revenue taxes are included in operating 
revenues in the statement of comprehensive income.

Accounts Receivable and Allowance for Uncollectible 
Accounts 
Accounts receivable consist primarily of amounts due for 
natural gas sales and transportation services to utility 
customers, plus amounts due for gas storage services. With 
respect to these trade receivables, including accrued 
unbilled revenue, we establish an allowance for uncollectible 

60

accounts (allowance) based on the aging of receivables, 
collection experience of past due account balances including 
payment plans, and historical trends of write-offs as a 
percent of revenues. With respect to large individual 
customer receivables, a specific allowance is established 
and recorded when amounts are identified as unlikely to be 
partially or fully recovered. Inactive accounts are written-off 
against the allowance after they are 120 days past due or 
when deemed to be uncollectible. Differences between our 
estimated allowance and actual write-offs will occur based 
on a number of factors, including changes in economic 
conditions, customer creditworthiness and the level of 
natural gas prices. Each quarter the allowance for 
uncollectible accounts is adjusted, as necessary, based on 
information currently available.

Inventories  
Utility gas inventories, which consist of natural gas in storage 
for the utility, are stated at the lower of average cost or net 
realizable value. The regulatory treatment of utility gas 
inventories provides for cost recovery in customer rates. 
Utility gas inventories that are injected into storage are 
priced into inventory based on actual purchase costs. Utility 
gas inventories that are withdrawn from storage are charged 
to cost of gas during the current period at the weighted 
average inventory cost.

Gas storage inventories, which primarily represent 
inventories at the Gill Ranch storage facility, consist primarily 
of natural gas that we received as fuel-in-kind from storage 
customers. Gas storage inventories are valued at the lower 
of average cost or net realizable value. Cushion gas is not 
included in our inventory balances. It is recorded at original 
cost and classified as a long-term plant asset.

Material and supplies inventories consist of both utility and 
non-utility inventories and are stated at the lower of average 
cost or net realizable value.

Our utility and gas storage inventories totaled $51.4 million 
and $58.8 million at December 31, 2013 and 2012, 
respectively. At December 31, 2013 and 2012, our materials 
and supplies inventories totaled $9.3 million and $8.8 million, 
respectively.

Gas Reserves
Our gas reserves are stated at cost, adjusted for regulatory 
amortization, with the associated deferred tax benefits 
recorded as liabilities on the balance sheet. Transactional 
costs to enter into the agreement and payments by NW 
Natural to acquire gas reserves are recognized as gas 
reserves on the balance sheet. The current portion is 
calculated based on expected gas deliveries within the next 
fiscal year. We recognize regulatory amortization of this 
asset on a volumetric basis calculated using the estimated 
gas reserves and the estimated therms extracted and sold 
each month. The amortization of gas reserves is recorded to 
cost of gas along with gas production revenues and 
production costs. See Note 11.

Derivatives  
In accordance with accounting for derivatives and hedges, 
we measure derivatives at fair value and recognize them as 
either assets or liabilities on the balance sheet. Accounting 

 
When developing fair value measurements, it is our policy to 
use quoted market prices whenever available, or to 
maximize the use of observable inputs and minimize the use 
of unobservable inputs when quoted market prices are not 
available. Fair values are primarily developed using industry-
standard models that consider various inputs including: (a) 
quoted future prices for commodities; (b) forward currency 
prices; (c) time value; (d) volatility factors; (e) current market 
and contractual prices for underlying instruments; (f) market 
interest rates and yield curves; (g) credit spreads; (h) and 
other relevant economic measures.

Income Tax Expense  
NW Natural and its wholly-owned subsidiaries file 
consolidated federal, state, and local income tax returns. 
Income taxes are currently allocated based on each entity’s 
respective taxable income or loss and tax credits as if each 
entity filed a separate return. We account for income taxes in 
accordance with accounting standards for income taxes. 
Accounting for income taxes requires recognition of deferred 
tax liabilities and assets for the future tax consequences of 
events that have been included in the consolidated financial 
statements or tax returns. Under this method, deferred tax 
liabilities and assets are determined based on the difference 
between the financial statement and tax basis of assets and 
liabilities using enacted tax rates in effect for the year in 
which the differences are expected to reverse. See Note 9.

Accounting for income taxes also requires recognition of 
deferred income tax assets and liabilities for temporary 
differences where regulators prohibit deferred income tax 
treatment for ratemaking purposes. We have recorded 
deferred tax liabilities of $56.2 million and $60.3 million at 
December 31, 2013 and 2012, respectively, to recognize 
future taxes payable resulting from transactions that have 
previously been reflected in the financial statements for 
these temporary differences. Regulatory assets or liabilities 
corresponding to such additional deferred income tax assets 
or liabilities may be recorded to the extent we believe they 
will be recoverable from or payable to customers through the 
ratemaking process. A corresponding regulatory asset has 
been recorded which represents the probable future revenue 
that will result from inclusion in rates charged to customers 
for taxes which will be paid in the future. The probable future 
revenue to be recorded takes into consideration the 
additional future taxes which will be generated by that 
revenue. Amounts applicable to income taxes due from 
customers primarily represent differences between the 
financial statement and tax basis of net utility plant in service 
and actual removal costs incurred.

Deferred investment tax credits on utility plant additions, 
which reduce income taxes payable, are deferred for 
financial statement purposes and amortized over the life of 
the related plant or lease.

for derivatives requires that changes in the fair value be 
recognized currently in earnings unless specific hedge 
accounting criteria are met. Accounting for derivatives and 
hedges provides an exception for contracts intended for 
normal purchases and normal sales for which physical 
delivery is probable. In addition, certain derivative contracts 
are approved by regulatory authorities for recovery or refund 
through customer rates. Accordingly, the changes in fair 
value of these approved contracts are deferred as regulatory 
assets or liabilities pursuant to regulatory accounting 
principles. Our financial derivatives generally qualify for 
deferral under regulatory accounting. The Company’s index-
priced physical derivative contracts also qualify for regulatory 
deferral accounting treatment.

Derivative contracts entered into for utility requirements after 
the annual PGA rate has been set and that PGA year has 
begun are subject to the PGA incentive sharing mechanism. 
In Oregon we participate in a PGA sharing mechanism under 
which we are required to select either an 80% or 90% 
deferral of higher or lower gas costs such that the impact on 
current earnings from the gas cost sharing is either 20% or 
10% of gas cost differences compared to PGA prices, 
respectively. For the PGA years in Oregon beginning 
November 1, 2013, 2012 and 2011, we selected a 90% 
deferral of gas cost differences. In Washington, 100% of the 
differences between the PGA prices and actual gas costs are 
deferred. See Note 13.

Our financial derivatives policy sets forth the guidelines for 
using selected derivative products to support prudent risk 
management strategies within designated parameters. Our 
objective for using derivatives is to decrease the volatility of 
gas prices, earnings, and cash flows without speculative risk. 
The use of derivatives is permitted only after the risk 
exposures have been identified, are determined to exceed 
acceptable tolerance levels, and are determined necessary 
to support normal business activities. We do not enter into 
derivative instruments for trading purposes.

Fair Value  
In accordance with fair value accounting, we use the 
following fair value hierarchy for determining inputs for our 
debt, pension plan assets and our derivative fair value 
measurements:

• 

• 

• 

Level 1: Valuation is based upon quoted prices for 
identical instruments traded in active markets;
Level 2: Valuation is based upon quoted prices for 
similar instruments in active markets, quoted prices for 
identical or similar instruments in markets that are not 
active, and model-based valuation techniques for which 
all significant assumptions are observable in the market; 
and
Level 3: Valuation is generated from model-based 
techniques that use significant assumptions not 
observable in the market. These unobservable 
assumptions reflect our own estimates of assumptions 
that market participants would use in valuing the asset 
or liability.

61

  
Environmental Contingencies  
Loss contingencies are recorded as liabilities when it is 
probable that a liability has been incurred and the amount of 
the loss is reasonably estimable in accordance with 
accounting standards for contingencies. Estimating probable 
losses requires an analysis of uncertainties that often 
depend upon judgments about potential actions by third 
parties. Accruals for loss contingencies are recorded based 
on an analysis of potential results. 

With respect to environmental liabilities and related costs, 
we develop estimates based on a review of information 
available from numerous sources, including completed 
studies and site specific negotiations. It is our policy to 
accrue the full amount of such liability when information is 
sufficient to reasonably estimate the amount of probable 

3. EARNINGS PER SHARE

liability. When information is not available to reasonably 
estimate the probable liability, or when only the range of 
probable liabilities can be estimated and no amount within 
the range is more likely than another, then it is our policy to 
accrue at the low end of the range. Accordingly, due to 
numerous uncertainties surrounding the course of 
environmental remediation and the preliminary nature of 
several site investigations, in some cases, we may not be 
able to reasonably estimate the high end of the range of 
possible loss. In those cases we have disclosed the nature 
of the potential loss and the fact that the high end of the 
range cannot be reasonably estimated.

Subsequent Events
See Note 17 for information regarding the Company's 
environmental insurance settlements.

Basic earnings per share are computed using net income and the weighted average number of common shares outstanding for 
each period presented. Diluted earnings per share are computed in the same manner, except it uses the weighted average 
number of common shares outstanding plus the effects of the assumed exercise of stock options and the payment of estimated 
stock awards from other stock-based compensation plans that are outstanding at the end of each period presented. Diluted 
earnings per share are calculated as follows:

In thousands, except per share data

Net income

Average common shares outstanding - basic

Additional shares for stock-based compensation plans (See Note 6)

Average common shares outstanding - diluted

Earnings per share of common stock - basic

Earnings per share of common stock - diluted

Additional information:

2013

2012

2011

$

60,538

$

58,779

$

26,974

53

27,027

26,831

76

26,907

$

$

2.24

2.24

$

$

2.19

2.18

$

$

63,044

26,687

57

26,744

2.36

2.36

Antidilutive shares not included in net income per diluted common share calculation

26

1

2

4. SEGMENT INFORMATION

We operate in two primary reportable business segments, 
local gas distribution and gas storage. We also have other 
investments and business activities not specifically related 
to one of these two reporting segments, which we 
aggregate and report as other. We refer to our local gas 
distribution business as the utility, and our gas storage 
segment and other as non-utility. Our utility segment also 
includes NWN Gas Reserves, which is a wholly-owned 
subsidiary of Energy Corp, and the utility portion of Mist. 
Our gas storage segment includes NWN Gas Storage, 
which is a wholly-owned subsidiary of NWN Energy, Gill 
Ranch, which is a wholly-owned subsidiary of NWN Gas 
Storage, the non-utility portion of Mist, and all third-party 
asset management services. Other includes NNG Financial 
and NWN Energy's equity investment in PGH, which is 
pursuing development of a cross-Cascades pipeline project 
(see Other, below).

Local Gas Distribution
Our local gas distribution segment is a regulated utility 
principally engaged in the purchase, sale, and delivery of 
natural gas and related services to customers in Oregon 
and southwest Washington. As a regulated utility, we are 
responsible for building and maintaining a safe and reliable 

pipeline distribution system, purchasing sufficient gas 
supplies from producers and marketers, contracting for firm 
and interruptible transportation of gas over interstate 
pipelines to bring gas from the supply basins into our 
service territory, and re-selling the gas to customers subject 
to rates, terms, and conditions approved by the OPUC or 
WUTC. Gas distribution also includes taking customer-
owned gas and transporting it from interstate pipeline 
connections, or city gates, to the customers’ end-use 
facilities for a fee, which is approved by the OPUC or 
WUTC. Approximately 90% of our customers are located in 
Oregon and 10% in Washington. On an annual basis, 
residential and commercial customers typically account for 
around 60% of our utility’s total volumes delivered and 90% 
of our utility’s margin. Industrial customers largely account 
for the remaining volumes and utility margin. A small 
amount of utility margin is also derived from miscellaneous 
services, gains or losses from an incentive gas cost sharing 
mechanism and other service fees.

Industrial sectors we serve include: pulp, paper and other 
forest products; the manufacture of electronic, 
electrochemical and electrometallurgical products; the 
processing of farm and food products; the production of 
various mineral products; metal fabrication and casting; the 
production of machine tools, machinery and textiles; the 
manufacture of asphalt, concrete and rubber; printing and 

62

publishing; nurseries; government and educational 
institutions; and electric generation. No individual customer 
or industry group accounts for over 10% of our utility 
revenues or utility margins.

Gas Storage
Our gas storage segment includes natural gas storage 
services provided to customers primarily from two 
underground natural gas storage facilities, our Gill Ranch 
gas storage facility, and the non-utility portion of our Mist 
gas storage facility. In addition to earning revenue from 
customer storage contracts, we also use an independent 
energy marketing company to provide asset management 
services for utility and non-utility capacity under contractual 
arrangement, the results of which are included in this 
business segment. For the years ended December 31, 
2013, 2012 and 2011, this business segment derived a 
majority of its revenues from firm and interruptible gas 
storage contracts and from asset management services. 

Mist Gas Storage Facility
Earnings from non-utility assets at our Mist facility in 
Oregon are primarily related to firm storage capacity 
revenues. Earnings for the gas storage segment also 
include revenues, net of amounts shared with core utility 
customers, from management of utility assets at Mist and 
upstream capacity when not needed to serve utility 
customers. In Oregon, the gas storage segment retains 
80% of the pre-tax income from these services when the 
costs of the capacity have not been included in utility rates, 
or 33% of the pre-tax income when the costs have been 
included in utility rates. The remaining 20% and 67%, 
respectively, are credited to a deferred regulatory account 
for crediting back to utility customers. We have a similar 
sharing mechanism in Washington for revenue derived from 
storage and third party asset management services.

Gill Ranch Gas Storage Facility
Gill Ranch has a joint project agreement with Pacific 
Gas and Electric Company (PG&E) to own and operate the 
Gill Ranch underground natural gas storage facility near 
Fresno, California. Gill Ranch has a 75% undivided 
ownership interest in the facility and is also the operator of 
the facility, which offers storage services to the California 
market at market-based rates, subject to CPUC regulation 
including, but not limited to, service terms and conditions 
and tariff regulations. Although this is a jointly owned 
property, each owner is independently responsible for 
financing its share of the Gill Ranch natural gas storage 
facility.

Other
We have immaterial non-utility investments and other 
business activities which are aggregated and reported as 
other. Other primarily consists of an equity method 
investment in a joint venture to build and operate an 
interstate gas transmission pipeline in Oregon (Palomar) 
and other pipeline assets in NNG Financial. For more 
information on Palomar, see Note 12. Other also includes 
some operating and non-operating revenues and expenses 
of the parent company that cannot be allocated to utility 
operations.

NNG Financial holds certain non-utility financial 
investments, but its assets primarily consist of an active, 
wholly-owned subsidiary which owns a 10% interest in an 
18-mile interstate natural gas pipeline. NNG Financial’s 
total assets were $1.2 million and $1.1 million at December 
31, 2013 and 2012, respectively.

63

 
Segment Information Summary
The following table presents summary financial information concerning the reportable segments. Inter-segment transactions are 
insignificant.

In thousands

2013

Utility

Gas Storage

Other

Total

Operating revenues

$

727,182

$

31,112

$

224

$

Depreciation and amortization

Income from operations

Net income

Capital expenditures

Total assets at December 31, 2013

2012

69,420

128,066

54,920

137,466

2,644,367

6,485

14,669

5,569

1,458

310,097

Depreciation and amortization

Income from operations

Net income

Capital expenditures

Total assets at December 31, 2012

2011

66,545

128,854

54,049

130,151

2,505,655

6,472

13,226

4,521

1,541

291,568

Operating revenues

$

699,862

$

30,520

$

225

$

16,447

2,970,911

—

11

49

—

—

100

209

337

758,518

75,905

142,746

60,538

138,924

730,607

73,017

142,180

58,779

132,029

15,897

2,813,120

Operating revenues

$

801,478

$

26,354

$

223

$

Depreciation and amortization

Income from operations

Net income (loss)

Capital expenditures

63,843

135,722

59,673

94,049

6,161

9,090

4,101

6,485

—

33

(730)

—

828,055

70,004

144,845

63,044

100,534

Utility Margin
Utility margin is a financial measure consisting of utility operating revenues less revenue taxes and the associated cost of gas. 
Cost of gas purchased for utility customers is generally a pass-through cost in the amount of revenues billed to regulated utility 
customers. By netting costs of gas from utility operating revenues, utility margin provides a key metric used by our chief 
operating decision maker in assessing the performance of the utility segment. The following table presents additional segment 
information concerning utility margin. The gas storage and other segments emphasize growth in operating revenues and net 
income as opposed to margin because these segments do not incur commodity cost of sales like the utility and, therefore, use 
operating revenues and net income to assess performance.

In thousands

Utility margin calculation:

Utility operating revenues

Less: Utility cost of gas

Utility margin

2013

2012

2011

$

$

727,182

$

699,862

$

373,298

355,335

353,884

$

344,527

$

801,478

458,508

342,970

64

5. COMMON STOCK

6. STOCK-BASED COMPENSATION

Common Stock
As of December 31, 2013 and 2012, we had 100 million 
shares of common stock authorized. As of December 31, 
2013, we had reserved 122,184 shares for issuance of 
common stock under the Employee Stock Purchase Plan 
(ESPP) and 96,991 shares under our Dividend 
Reinvestment and Direct Stock Purchase Plan (DRPP). In 
the second quarter of 2012, our Restated Stock Option Plan 
(Restated SOP) was terminated for new stock option grants. 
There were 492,150 options outstanding at December 31, 
2013, which were granted prior to termination of the plan. 
These options will remain outstanding to the earlier of their 
forfeiture, exercise or expiration.

Stock Repurchase Program
We have a share repurchase program under which we may 
purchase our common shares on the open market or 
through privately negotiated transactions. We currently have 
Board authorization through May 2014 to repurchase up to 
an aggregate of 2.8 million shares, but not to exceed $100 
million. No shares of common stock were repurchased 
pursuant to this program during the year ended December 
31, 2013. Since the plan’s inception in 2000 a total of 2.1 
million shares have been repurchased at a total cost of 
$83.3 million.

Summary of Changes in Common Stock
The following table shows the changes in the number of 
shares of our common stock issued and outstanding:

In thousands

Balance, December 31, 2010

   Sales to employees under ESPP

Stock-based compensation

   Sales to shareholders under DRPP

Balance, December 31, 2011

   Sales to employees under ESPP

Stock-based compensation

   Sales to shareholders under DRPP

Balance, December 31, 2012

   Sales to employees under ESPP

Stock-based compensation

   Sales to shareholders under DRPP

Balance, December 31, 2013

Shares

26,668

15

24

49

26,756

18

47

96

26,917

16

42

100

27,075

65

Our stock-based compensation plans are designed to 
promote stock ownership in NW Natural by employees and 
officers. These compensation plans include a Long-Term 
Incentive Plan (LTIP), an ESPP, and a Restated SOP. A 
variety of equity programs may be granted under the 
LTIP. The Restated SOP was terminated for new stock 
option grants in 2012. 

Long-Term Incentive Plan
The LTIP is intended to provide a flexible, competitive 
compensation program for eligible officers and key 
employees. Under the LTIP, shares of common stock are 
authorized for equity incentive grants in the form of stock, 
restricted stock, restricted stock units, stock options, or 
performance shares. An aggregate of 850,000 shares were 
authorized for issuance as of December 31, 2013. Shares 
awarded under the LTIP may be purchased on the open 
market or issued as new shares. 

Of the 850,000 shares of common stock authorized for LTIP 
awards at December 31, 2013, there were 241,169 shares 
available for issuance under any type of award. This 
assumes that market, performance, and service based 
grants currently outstanding are awarded at the target level. 
Additionally, 250,000 shares of common stock were 
available for option grants at December 31, 2013. There 
were no outstanding grants of restricted stock or stock 
options under the LTIP at December 31, 2013 or 2012. The 
LTIP stock awards are compensatory awards for which 
compensation expense is based on the fair value of stock 
awards, with expense being recognized over the 
performance and vesting period of the outstanding awards.

Performance Shares
Since the LTIP’s inception in 2001, performance shares, 
which incorporate market, performance, and service-based 
factors, have been granted annually with three-year 
performance periods. The following table summarizes 
performance share expense information:

Expense in millions

Estimated award:

2011-2013 grant(2)

Actual award:

Shares (1) 

Expense 
During Award 
Year(3)

Total
Expense
for Award

9,516

$

0.4

$

1.0

2010-2012 grant

9,924

0.5

1.2

0.4

2009-2011 grant

0.8
8,428
(1) In addition to common stock shares, a participant also receives a 
dividend equivalent cash payment equal to the number of shares of 
common stock received on the award payout multiplied by the 
aggregate cash dividends paid per share during the performance 
period. 
(2) This represents the estimated number of shares to be awarded 
as of December 31, 2013 as certain performance share measures 
had been achieved. Amounts are subject to change with final 
payout amounts authorized by the Board of Directors in February 
2014.
(3)Amount represents the expense recognized in the third year of the 
vesting period noted above. 

The aggregate number of performance shares granted and outstanding at the target and maximum levels were as follows:

Dollars in thousands

Performance Period

Performance Share Awards Outstanding

Target

Maximum

2013

Expense

Cumulative Expense

December 31, 2013

2011-13

2012-14

2013-15

Total

37,950

35,340

37,300

110,590

75,900

$

390

$

70,680

74,600

221,180

$

603

486

1,479

960

1,238

486

For each of these performance periods, awards will be 
based on total shareholder return relative to a peer group of 
gas distribution companies over the three-year performance 
period and on performance results achieved relative to 
specific core and non-core strategies. Compensation 
expense is recognized in accordance with the accounting 
standard for stock-based compensation and calculated 
based on performance levels achieved and an estimated fair 
value using the Monte-Carlo method. The weighted-average 
grant date fair value of unvested shares at December 31, 
2013 and 2012 was $43.39 and $51.42 per share, 
respectively. The weighted-average grant date fair value of 
shares vested during the year was $30.86 per share and for 
shares granted during the year was $38.96 per share. As of 
December 31, 2013, there was $1.6 million of unrecognized 
compensation cost related to the unvested portion of 
performance awards expected to be recognized through 
2015.

Restricted Stock Units
In 2012, the Company began granting RSUs under the LTIP 
instead of stock options under the Restated SOP. The 
majority of RSUs include a performance-based threshold 
and generally have a vesting period of four years from the 
grant date. An RSU obligates the Company upon vesting to 
issue the RSU holder one share of common stock plus a 
cash payment equal to the total amount of dividends paid 
per share between the grant date and vesting date of the 
RSU. The fair value of the RSU is equal to the closing 
market price of the Company's common stock on the grant 
date.

Information regarding the RSU activity is summarized as 
follows:

Number
of
RSUs

Weighted -
Average
Price Per 
RSU

Nonvested, Dec. 31, 2011

— $

Granted

Vested

Forfeited

Nonvested, Dec. 31, 2012

Granted

Vested

Forfeited

Nonvested, Dec. 31, 2013

25,224

—

(360)

24,864

25,748

(5,455)

(590)

44,567

—

47.58

—

48.00

47.57

45.38

48.01

46.58

46.27

66

As of December 31, 2013, there was $1.5 million of 
unrecognized compensation cost from grants of RSUs, 
which is expected to be recognized over a period extending 
through 2017.

Restated Stock Option Plan
The Restated SOP was terminated for new option grants in 
2012; however, options that had been granted before the 
plan terminated will remain outstanding until the earlier of 
their expiration, forfeiture, or exercise. Any new grants of 
stock options would be made under the LTIP. We did not 
grant new stock options during 2012 or 2013.

At December 31, 2013, a total of 492,150 shares of 
common stock remained reserved for issuance under the 
Restated SOP. As the plan is closed, there are no additional 
shares available for grant. Options under the Restated SOP 
were granted only to officers and key employees designated 
by a committee of our Board of Directors. All options were 
granted at an option price equal to the closing market price 
on the date of grant and may be exercised for a period up to 
10 years and 7 days from the date of grant. Option holders 
may exchange shares they have owned for at least six 
months, valued at the current market price, to purchase 
shares at the option price.

The fair value of each stock option is estimated on the grant 
date using the Black-Scholes option pricing model with the 
following weighted average assumptions and outcomes:

Risk-free interest rate

Expected life (in years)

Expected market price volatility factor

Expected dividend yield

Forfeiture rate

2011

2.0%

4.5

24.5%

3.8%

3.1%

Weighted average grant date fair value

$ 6.73

The expected life of our grants was calculated based on our 
actual experience with previously exercised option 
grants. The risk-free interest rate was based on the implied 
yield currently available on U.S. Treasury zero-coupon 
issues with a life equal to the expected life of the 
options. Historical data was used to estimate the volatility 
factor, measured on a daily basis, for a period equal to the 
duration of the expected life of the option awards. The 
dividend yield was based on management’s current 
estimate for future dividend payouts at the time of grant. We 
expense the total cost of stock option awards granted to 
retirement eligible employees at the date of grant in 
accordance with stock option accounting guidance and the 
retirement vesting provisions of our option agreements.

 
 
Information regarding the Restated SOP activity is 
summarized as follows:

7. DEBT

Weighted -
Average
Price Per 
Share

Intrinsic
Value
(In millions)

Option
Shares

Balance outstanding,
Dec. 31, 2010

490,460

$

40.82

$

Granted

Exercised

Forfeited

Balance outstanding,
Dec. 31, 2011

Exercised

Forfeited

Balance outstanding,
Dec. 31, 2012
Exercised

Forfeited

Balance outstanding,
Dec. 31, 2013

Exercisable, 
Dec. 31, 2013

122,700

(24,185)

(9,750)

579,225

(46,825)

(2,475)

529,925

(33,800)

(3,975)

45.74

33.88

44.38

42.09

40.62

43.78

42.22

32.16

43.72

492,150

42.89

409,036

42.41

2.8

n/a

0.3

n/a

3.4

0.4

n/a

1.3

0.3

n/a

0.6

0.6

During 2013, cash of $1.1 million was received for option 
shares exercised and $0.2 million related tax benefit was 
realized. During 2013, 2012, and 2011, the total fair value of 
options that vested was $0.5 million, $0.6 million and $0.6 
million, respectively. The weighted average remaining life of 
options exercisable and outstanding at December 31, 2013, 
was 4.8 years and 5.1 years, respectively. As of December 
31, 2013, there was $0.2 million of unrecognized 
compensation cost related to the unvested portion of 
outstanding stock option awards expected to be recognized 
during 2014.

Employee Stock Purchase Plan
The ESPP allows employees to purchase common stock at 
85% of the closing price on the trading day immediately 
preceding the initial offering date, which is set annually. 
Each eligible employee may purchase up to $21,236 worth 
of stock through payroll deductions over a 12-month period, 
with shares issued at the end of the 12-month subscription 
period.

Stock-Based Compensation Expense
Stock-based compensation expense is recognized as 
operations and maintenance expense or is capitalized as 
part of construction overhead. The following table 
summarizes the financial statement impact of stock-based 
compensation under our LTIP, Restated SOP and ESPP:

In thousands

2013

2012

2011

Operations and maintenance
expense, for stock-based
compensation

$ 1,876 $ 1,668 $ 1,477

Income tax benefit

(765)

(707)

(597)

Net stock-based compensation
effect on net income

$ 1,111 $

961 $

880

Amounts capitalized for stock-based
compensation

$

331 $

294 $

261

Short-Term Debt
Our primary source of short-term funds is from the sale of 
commercial paper and bank loans. In addition to issuing 
commercial paper or bank loans to meet seasonal working 
capital requirements, short-term debt is used temporarily to 
fund capital requirements. Commercial paper and bank 
loans are periodically refinanced through the sale of long-
term debt or equity securities. Our commercial paper 
program is supported by one or more committed credit
facilities. At December 31, 2013 and 2012, the amounts of 
commercial paper debt outstanding were $188.2 million and 
$190.3 million, respectively, and the average interest rate 
was 0.3% at year-end for both periods. The carrying cost of 
our commercial paper approximates fair value using Level 2 
inputs, due to the short-term nature of the notes. See Note 2 
for a description of the fair value hierarchy. At December 31, 
2013, our commercial paper had a maximum maturity of 136 
days and an average maturity of 66 days. There were no 
bank loans outstanding at December 31, 2013 or 2012.

On December 20, 2012, NW Natural entered into a five-year 
$300 million credit agreement, pursuant to which we may 
extend commitments for two additional one-year periods 
subject to lender approval. In December 2013, we extended 
our commitment for an additional year with an updated 
maturity date of December 20, 2018. The credit agreement 
allows us to request increases in the total commitment 
amount up to a maximum amount of $450 million and 
permits letters of credit in an aggregate amount of up to 
$200 million. Any principal and unpaid interest owed on 
borrowings under the agreement are due and payable on or 
before the expiration date. There were no outstanding 
balances under the agreement and no letters of credit 
issued or outstanding at December 31, 2013 and 2012. 

The credit agreement requires that we maintain credit 
ratings with Standard & Poor’s (S&P) and Moody’s Investors 
Service, Inc. (Moody’s) and notify the lenders of any change 
in our senior unsecured debt ratings or senior secured debt 
ratings, as applicable, by such rating agencies. A change in 
our debt ratings is not an event of default, nor is the 
maintenance of a specific minimum level of debt rating a 
condition of drawing upon the credit facility. However, 
interest rates on any loans outstanding under the credit 
facility are tied to debt ratings, which would increase or 
decrease the cost of any loans under the credit facility when 
ratings are changed.

The credit agreement also requires us to maintain a 
consolidated indebtedness to total capitalization ratio of 
70% or less. Failure to comply with this covenant would 
entitle the lenders to terminate their lending commitments 
and accelerate the maturity of all amounts outstanding. We 
were in compliance with this covenant at December 31, 
2013 and 2012.

Long-Term Debt
The issuance of first mortgage bonds (FMBs), which 
includes our medium-term notes, under the Mortgage and 
Deed of Trust (Mortgage) is limited by eligible property, 
adjusted net earnings and other provisions of the Mortgage. 

67

 
 
 
First Mortgage Bonds
NW Natural issued $50 million of FMBs on August 19, 2013 
with a coupon rate of 3.542% and a 10-year maturity. In 
October 2012, the utility issued $50 million of FMBs with a 
coupon rate of 4.00% and a maturity date of October 31, 
2042. 

Subsidiary Senior Secured Debt
In November 2011, Gill Ranch issued $40 million of senior 
secured debt, which consists of $20 million of fixed rate debt 
with an interest rate of 7.75% and $20 million of variable 
interest rate debt with an interest rate of LIBOR plus 5.50%, 
or 7.00%, whichever is higher. At December 31, 2013, the 
variable interest rate was 7.00%. This debt is secured by all 
of the membership interests in Gill Ranch and is 
nonrecourse to NW Natural. The maturity date of this debt is 
November 30, 2016.

Under the debt agreements, Gill Ranch is subject to certain 
covenants and restrictions including, but not limited to, a 
financial covenant that requires Gill Ranch to maintain 
minimum adjusted earnings before interest, taxes, 
depreciation and amortization (EBITDA) at various levels 
over the term of the debt. The minimum adjusted EBITDA 
increases incrementally over the first few years, reaching its 
highest level in the 12-month period beginning April 1, 2015. 
Under the debt agreements, Gill Ranch is also subject to a 
debt service reserve requirement of 10% of the outstanding 
principal amount, certain prepayment penalties, restrictions 
on dividends out of Gill Ranch unless certain earnings ratios 
are met, and restrictions on incurrence of additional debt. 
Gill Ranch was in compliance with all existing debt 
provisions and covenants for the year ended December 31, 
2013.

Fair Value of Long-Term Debt
As our outstanding debt does not trade in active markets, 
we estimated the fair value of our outstanding long-term 
debt using outstanding debt issuances that actively trade in 
public markets and companies that have similar credit 
ratings, terms and remaining maturities to our debt. These 
valuations are based on Level 2 inputs as defined in the fair 
value hierarchy. See Note 2. 

The following table provides an estimate of the fair value of 
our long-term debt, including current maturities of long-term 
debt, using market prices in effect on the valuation date: 

In thousands

December 31,

2013

2012

Carrying amount

$

741,700

$

Estimated fair value

806,359

691,700

834,664

The Mortgage constitutes a first mortgage lien on 
substantially all of our utility property. In addition, our Gill 
Ranch subsidiary senior secured debt is secured by all of 
the membership interests in Gill Ranch as well as Gill 
Ranch’s debt service reserve account.

Retirement of long-term debt for each of the 12-month 
periods through December 31, 2018 are as follows: 

In thousands

Year

2014

2015

2016

2017

2018

$

60,000

40,000

65,000

40,000

22,000

The following table presents our debt outstanding as of 
December 31:

In thousands

First Mortgage Bonds

2013

2012

8.26 % Series B due 2014

$

10,000

$

10,000

3.95 % Series B due 2014

4.70 % Series B due 2015

5.15 % Series B due 2016

7.00 % Series B due 2017

6.60 % Series B due 2018

8.31 % Series B due 2019

7.63 % Series B due 2019

5.37 % Series B due 2020

9.05 % Series A due 2021

3.176 % Series B due 2021

3.542% Series B due 2023

5.62 % Series B due 2023

7.72 % Series B due 2025

6.52 % Series B due 2025

7.05 % Series B due 2026

7.00 % Series B due 2027

6.65 % Series B due 2027

6.65 % Series B due 2028

7.74 % Series B due 2030

7.85 % Series B due 2030

5.82 % Series B due 2032

5.66 % Series B due 2033

5.25 % Series B due 2035

4.00 % Series due 2042

50,000

40,000

25,000

40,000

22,000

10,000

20,000

75,000

10,000

50,000

50,000

40,000

20,000

10,000

20,000

20,000

19,700

10,000

20,000

10,000

30,000

40,000

10,000

50,000

50,000

40,000

25,000

40,000

22,000

10,000

20,000

75,000

10,000

50,000

—

40,000

20,000

10,000

20,000

20,000

19,700

10,000

20,000

10,000

30,000

40,000

10,000

50,000

Subsidiary Senior Secured Debt

Gill Ranch debt due 2016

701,700

651,700

40,000

40,000

741,700

691,700

Less: Current maturities of long-term
debt

Total long-term debt

60,000

—

$ 681,700

$ 691,700

68

  
 
 
 
 
 
 
 
8. PENSION AND OTHER POSTRETIREMENT BENEFIT COSTS

We maintain qualified non-contributory defined benefit pension plans, a few non-qualified supplemental pension plans for eligible 
executive officers and other key employees, and other postretirement employee benefit plans. We also have qualified defined 
contribution plans (Retirement K Savings Plan) for all eligible employees. Only the qualified defined benefit pension plan and 
Retirement K Savings Plan have plan assets, which are held in qualified trusts to fund retirement benefits. Effective December 
31, 2012, the defined benefit pension plans for non-union and union employees were merged into one plan. The qualified 
defined benefit retirement plan for non-union and union employees was closed to new participants effective January 1, 2007. 
The postretirement benefits plan for non-union employees was closed to new participants effective January 1, 2010. These plans 
were not available to employees of our non-utility subsidiaries. Non-union and union employees hired or re-hired after December 
31, 2006 and 2009, respectively, and employees of NW Natural subsidiaries are provided an enhanced Retirement K Savings 
Plan benefit.

The following table provides a reconciliation of the changes in benefit obligations and fair value of plan assets, as applicable, for 
the pension and other postretirement benefit plans, excluding the Retirement K Savings Plan, and a summary of the funded 
status and amounts recognized in the consolidated balance sheets as of December 31:

In thousands

Reconciliation of change in benefit obligation:

Obligation at January 1

Service cost

Interest cost

Net actuarial (gain) loss

Benefits paid

Obligation at December 31

Reconciliation of change in plan assets:

Fair value of plan assets at January 1

Actual return on plan assets

Employer contributions

Benefits paid

Fair value of plan assets at December 31

Funded status at December 31

Postretirement Benefit Plans

Pension Benefits

Other Benefits

2013

2012

2013

2012

$

435,889

$

391,127

$

33,119

$

30,049

8,698

16,400

(51,043)

(18,855)

8,047

17,295

37,615

(18,195)

656

1,157

(4,283)

(1,895)

592

1,267

3,182

(1,971)

$

391,089

$

435,889

$

28,754

$

33,119

$

249,603

$

215,970

$

22,872

13,442

26,683

25,145

(18,855)

(18,195)

— $

—

1,895

(1,895)

267,062

$

249,603

$

— $

—

—

1,971

(1,971)

—

(124,027) $

(186,286) $

(28,754) $

(33,119)

$

$

Our qualified defined benefit pension plan has an aggregate benefit obligation of $362.4 million and $404.0 million at December 
31, 2013 and 2012, respectively, and fair values of plan assets of $267.1 million and $249.6 million, respectively. 

The following table presents amounts realized through regulatory assets or in other comprehensive income for the years ended 
December 31:

Regulatory Assets

Other Comprehensive Income

Pension Benefits

Other Postretirement Benefits

Pension Benefits

In thousands

2013

2012

2011

2013

2012

2011

2013

2012

2011

Net actuarial (gain) loss

$ (51,892) $ 26,504

$ 66,404

$ (4,283) $

3,182

$

2,225

$ (3,302) $

3,511

$

2,948

Amortization of:

Transition obligation

Prior service cost

Actuarial loss

—

(230)

—

(230)

—

(230)

(16,744)

(14,482)

(10,731)

—

(197)

(733)

(411)

(197)

(435)

(411)

(197)

(289)

—

7

—

35

(1,550)

(1,150)

—

(122)

(854)

Total

$ (68,866) $ 11,792

$ 55,443

$ (5,213) $

2,139

$

1,328

$ (4,845) $

2,396

$

1,972

69

The following table presents amounts recognized in regulatory assets and accumulated other comprehensive loss (AOCL) at 
December 31:

In thousands

Prior service cost

Net actuarial loss

Total

Regulatory Assets

AOCL

Pension Benefits

Other Postretirement Benefits

Pension Benefits

2013

2012

2013

2012

2013

2012

$

$

867

$

1,097

$

685

$

882

$

(5) $

(12)

119,638

188,278

4,665

9,681

10,475

120,505

$

189,375

$

5,350

$

10,563

$

10,470

$

15,327

15,315

The following table presents amounts recognized in AOCL and the changes in AOCL related to our non-qualified employee 
benefit plans:

In thousands

Beginning balance

Amounts reclassified to AOCL

Amounts reclassified from AOCL:

Amortization of prior service costs

Amortization of actuarial losses

Total reclassifications before tax

Tax (benefit) expense

Total reclassifications for the period

Ending balance

In 2014, an estimated $9.8 million will be amortized from 
regulatory assets to net periodic benefit costs, consisting of 
$9.4 million of actuarial losses, and $0.4 million of prior 
service costs. A total of $1.0 million will be amortized from 
AOCL to earnings related to actuarial losses.

Our assumed discount rate was determined independently 
for each pension plan and other postretirement benefit plan 
based on the Citigroup Above Median Curve (discount rate 
curve), which uses high quality corporate bonds rated AA- 
or higher by S&P or Aa3 or higher by Moody’s. The discount 
rate curve was applied to match the estimated cash flows in 
each of the Company's plans to reflect the timing and 
amount of expected future benefit payments for these plans.

Our assumed expected long-term rate of return on plan 
assets was developed using a weighted average of the 
expected returns for the target asset portfolio. In developing 
the expected long-term rate of return assumption, 
consideration was given to the historical performance of 
each asset class in which the plans’ assets are invested and 
the target asset allocation for plan assets.

Our investment strategy and policies for qualified pension 
plan assets held in the retirement trust fund were approved 
by our retirement committee, which is composed of senior 
management employees with the assistance of an outside 
investment consultant. The policies set forth the guidelines 
and objectives governing the investment of plan assets. 
Plan assets are invested for total return with appropriate 
consideration for liquidity, portfolio risk, and return 
expectation. All investments are expected to satisfy the 
requirements of the rule of prudent investments as set forth 
under the Employee Retirement Income Security Act of 
1974. The approved asset classes include cash and short-
term investments, fixed income, common stock and 

Year Ended December 31,

2013

2012

(9,291) $

3,302

(7)

1,550

4,845

(1,912)

2,933

(6,358) $

(7,800)

(3,495)

(35)

1,134

(2,396)

905

(1,491)

(9,291)

$

$

convertible securities, absolute and real return strategies, 
real estate, and investments in NW Natural securities. Plan 
assets may be invested in separately managed accounts or 
in commingled or mutual funds. Investment re-balancing 
takes place periodically as needed, or when significant cash 
flows occur, in order to maintain the allocation of assets 
within the stated target ranges. Our expected long-term rate 
of return is based upon historical index returns by asset 
class, adjusted by a factor based on our historical return 
experience, diversified asset allocation and active portfolio 
management by professional investment managers. The 
retirement trust fund is not currently invested in any NW 
Natural securities.

The following is our pension plan asset target allocation at 
December 31, 2013:

Asset Category

U.S. large cap equity

U.S. small/mid cap equity

Non-U.S. equity

Emerging markets equity

Long government/credit

High yield bonds

Emerging market debt

Real estate funds

Absolute return strategy

Real return strategy

 Target Allocation

13.0%

8.5

13.0

3.5

30.0

5.0

5.0

6.0

11.0

5.0

Our non-qualified supplemental defined benefit plan 
obligations were $28.7 million and $31.9 million at 
December 31, 2013 and 2012, respectively. These plans 
are not subject to regulatory deferral, and the changes in 

70

 
 
 
actuarial gains and losses, prior service costs and transition 
assets or obligations are recognized in AOCL, net of tax, 
until they are amortized as a component of net periodic 
benefit cost. Although these are unfunded plans with no 
plan assets due to their nature as non-qualified plans, we 
indirectly fund a portion of our obligations with company- 
and trust-owned life insurance and other assets.

Our other postretirement benefit plans are unfunded plans 
but are subject to regulatory deferral. The actuarial gains 
and losses, prior service costs, and transition assets or 
obligations for these plans are recognized as a regulatory 

asset. Net periodic benefit costs consist of service costs, 
interest costs, and the amortization of actuarial gains and 
losses.

Net periodic benefit costs consist of service costs, interest 
costs, and the amortization of actuarial gains and losses.
the expected returns on plan assets and, in part, on a 
market-related valuation of assets. The market-related 
valuation reflects differences between expected returns and 
actual investment returns, of which the differences are 
recognized over a three-year period or less from the year in 
which they occur, thereby reducing year-to-year net periodic 
benefit cost volatility.

The following tables provide the components of net periodic benefit cost for the Company's pension and other postretirement 
benefit plans for the years ended December 31 and the assumptions used in measuring these costs and benefit obligations:

In thousands

Service cost

Interest cost

Expected return on plan assets

Amortization of transition obligations

Amortization of prior service costs

Amortization of net actuarial loss

Net periodic benefit cost

Amount allocated to construction
Amount deferred to regulatory balancing account(1)

Pension Benefits

Other Postretirement Benefits

2013

2012

2011

2013

2012

2011

$

8,698

$

8,047

$

7,122

$

656

$

592

$

16,400

(18,721)

—

223

18,294

24,894

(6,712)

(9,115)

17,295

18,134

1,157

1,267

(19,082)

(17,867)

—

195

15,631

22,086

(5,820)

(7,876)

—

352

11,584

19,325

(4,905)

(6,008)

—

—

197

734

2,744

(856)

—

—

411

197

435

2,902

(882)

—

614

1,404

—

411

197

289

2,915

(878)

—

Net amount charged to expense

$

9,067

$

8,390

$

8,412

$

1,888

$

2,020

$

2,037

(1) Effective January 1, 2011, the OPUC approved the deferral of certain pension expenses above or below the amount set in rates, with recovery 
of these deferred amounts through the implementation of a balancing account, which includes the expectation of lower net periodic benefit costs 
in future years. Deferred pension expense balances include accrued interest at the utility’s authorized rate of return. See Note 2.

Net periodic benefit costs above are reduced by amounts capitalized to utility plant based on approximately 30% to 40% payroll 
overhead charge to construction work orders. In addition, a certain amount of net periodic benefit costs are recorded to the 
regulatory balancing account for pensions, with the remaining net amount charged to expense and recognized in current 
earnings.

Pension Benefits

Other Postretirement Benefits

2013

2012

2011

2013

2012

2011

Assumptions for net periodic benefit cost:

Weighted-average discount rate

3.84%

4.51%

5.49%

3.56%

4.33%

5.16%

Rate of increase in compensation

3.25-5.0%

3.25-5.0%

3.25-5.0%

Expected long-term rate of return

7.50%

8.00%

8.25%

n/a

n/a

n/a

n/a

n/a

n/a

Assumptions for year-end funded status:

Weighted-average discount rate

4.73%

3.85%

4.51%

4.45%

3.56%

4.33%

Rate of increase in compensation

3.25-5.0%

3.25-5.0%

3.25-5.0%

Expected long-term rate of return

7.50%

7.50%

8.00%

n/a

n/a

n/a

n/a

n/a

n/a

The assumed annual increase in health care cost trend 
rates used in measuring other postretirement benefits as of 
December 31, 2013 was 9.0% for pre-65 and 7.9% for 
post-65 populations. These trend rates apply to both 
medical and prescription drugs. Medical costs and 
prescription drugs are assumed to decrease gradually each 
year to a rate of 5.0% by 2021.

Assumed health care cost trend rates can have a significant 
effect on the amounts reported for the health care plans. A 
one percentage point change in assumed health care cost 
trend rates would have the following effects:

In thousands

1% Increase

1% Decrease

Effect on net periodic
postretirement health care
benefit cost

Effect on the accumulated
postretirement benefit obligation

$

73

$

(64)

739

(660)

71

  
 
 
 
 
 
 
 
 
 
 
 
 
 
The impact of a change in retirement benefit costs on 
operating results would be less than the amounts shown 
above because a portion would be capitalized to utility plant, 
and a certain amount would be recorded to the regulatory 
balancing account with the remaining amount recognized in 
current earnings.

The following table provides information regarding employer 
contributions and benefit payments for the qualified pension 
plan, non-qualified pension plans and other postretirement 
benefit plans for the years ended December 31, and 
estimated future contributions and payments:

In thousands

Pension Benefits

Other Benefits

$

25,559

$

Employer Contributions:

2012

2013

2014 (estimated)

Benefit Payments:

2011

2012

2013

Estimated Future Benefit Payments:

2014

2015

2016

2017

2018

13,907

15,607

18,269

18,195

18,855

19,450

20,033

20,671

21,424

22,337

1,971

1,895

1,892

1,870

1,971

1,895

1,892

1,927

2,001

2,053

2,112

2019-2023

129,177

10,823

Employer Contributions to Company-Sponsored 
Defined Benefit Pension Plans
We make contributions to our qualified defined benefit 
pension plans based on actuarial assumptions and 
estimates, tax regulations, and funding requirements under 
federal law. The Pension Protection Act of 2006 (the Act) 
established new funding requirements for defined benefit 
plans. The Act establishes a 100% funding target over 
seven years for plan years beginning after December 31, 
2008. In addition, in July 2012 the Moving Ahead for 
Progress in the 21st Century Act (MAP-21) legislation 
changed several provisions affecting pension plans, 
including temporary funding relief and Pension Benefit 
Guaranty Corporation (PBGC) premium increases, which 
reduces the level of minimum required contributions in the 
near-term but generally increases contributions in the long-
run as well as increasing the operational costs of running a 
pension plan. Our qualified defined benefit pension plan is 
currently underfunded by $95.3 million at December 31, 
2013. Including the impacts of MAP-21, we expect to make 
contributions during 2014 of approximately $15 million.

Multiemployer Pension Plan
In addition to the Company-sponsored defined benefit plans 
referred to above, we contribute to a multiemployer pension 
plan for our utility's union employees known as the Western 
States Office and Professional Employees International 
Union Pension Fund (Western States Plan) in accordance 
with our collective bargaining agreement. The employer 
identification number of the plan is 94-6076144. The cost of 

72

this plan, and corresponding future liabilities, are in addition 
to pension amounts in the tables above. The Western 
States Plan is managed by a board of trustees that includes 
equal representation from participating employers and labor 
unions. Contribution rates are established by collective 
bargaining agreements, and benefit levels are set by the 
board of trustees based on the advice of an independent 
actuary regarding the level of benefits that agreed-upon 
contributions are expected to support. 

The Western States Plan has reported an accumulated 
funding deficit for the current plan year and remains in 
critical status. A plan is considered to be in critical status if 
its funded status is below 65%. Federal law requires 
pension plans in critical status to adopt a rehabilitation plan 
designed to restore the financial health of the plan. 
Rehabilitation plans may specify benefit reductions, 
contribution surcharges, or a combination of the two. The 
Western States Plan trustees adopted a rehabilitation plan 
that reduced benefit accrual rates and adjustable benefits 
for active employee participants and increased future 
employer contribution rates. These changes are expected to 
improve the funded status of the plan. Our contributions to 
the Western States Plan amounted to $0.5 million in 2013 
and $0.4 million in 2012, and 2011, which is approximately 
4% to 5% of the total contributions to the plan by all 
employer participants.

Under the terms of our current collective bargaining 
agreement, which became effective in July 2009, we could 
withdraw from the Western States Plan at any time. 
Effective December 22, 2013, we withdrew from the plan, 
which was a noncash transaction. Vested participants will 
receive all benefits accrued through the date of withdrawal. 
As the plan was underfunded at the time of withdrawal, we 
have been assessed a withdrawal liability of $8.3 million, 
which requires NW Natural to pay $0.6 million each year to 
the plan for the next 20 years. We have deferred the 
withdrawal liability to a regulatory account on the balance 
sheet.

Defined Contribution Plan
The Retirement K Savings Plan provided to our employees 
is a qualified defined contribution plan under Internal 
Revenue Code Section 401(k). Employer contributions to 
this plan totaled $2.2 million in 2013 and 2012, and $2.4 
million in 2011. The Retirement K Savings Plan includes an 
Employee Stock Ownership Plan. 

Deferred Compensation Plans
The supplemental deferred compensation plans for eligible 
officers and senior managers are non-qualified plans. These 
plans are designed to enhance the retirement savings of 
employees and to assist them in strengthening their 
financial security by providing an incentive to save and 
invest regularly. 

Fair Value
Following is a description of the valuation methodologies 
used for assets measured at fair value. In cases where the 
pension plan is invested through a collective trust fund or 
mutual fund, our custodian uses the fund's market value. 
The custodian also provides the market values for 
investments directly owned.

 
 
 
 
  
U.S. LARGE CAP EQUITY and U.S. SMALL/MID CAP 
EQUITY. These are level 1 and 2 assets. The level 1 assets 
consist of directly held stocks, and mutual funds with a 
readily determinable fair value, including a published net 
asset value (NAV). The level 2 assets consist of mutual 
funds where NAV is not published but the investment can be 
readily disposed of at NAV or market value. Directly held 
stocks are valued at the closing price reported in the active 
market on which the individual security is traded, and 
mutual funds are valued at NAV. This asset class includes 
investments primarily in U.S. common stocks.

NON-U.S. EQUITY. These are level 1 and 2 assets. The level 
1 assets consist of directly held stocks, and the level 2 
assets consist of an open-end mutual fund and a 
commingled trust where the NAV/unit price is not published 
but the investment can be readily disposed of at the NAV/
unit price. Directly held stocks are valued at the closing 
price reported in the active market on which the individual 
security is traded, and the mutual fund is valued at NAV, 
while the commingled trust is valued at the unit price of the 
trust. This asset class includes investments primarily in 
foreign equity common stocks.

EMERGING MARKETS EQUITY. These are level 1 assets 
representing a mutual fund with readily determinable fair 
value, including published NAV's. This asset class includes 
investments primarily in common stocks in emerging 
markets.

FIXED INCOME. This is a level 2 asset consisting of a mutual 
fund, valued at NAV, where NAV is not published, but the 
investment can be readily disposed of at NAV. This asset 
class includes investments primarily in investment grade 
debt and fixed income securities.

LONG GOVERNMENT/CREDIT. These are level 1 and 2 
assets. The level 1 assets consist of a fixed-income mutual 
fund with readily determinable fair value, including a 
published NAV. The level 2 assets consist of directly held 
fixed-income securities whose values are determined by 
closing prices if available and by matrix prices for illiquid 
securities. This asset class includes long duration fixed 
income investments primarily in U.S. treasuries, U.S. 
government agencies, municipal securities, mortgage-
backed securities, asset-backed securities, as well as U.S. 
and international investment-grade corporate bonds.

HIGH YIELD BONDS. These are level 2 assets consisting of a 
limited partnership where valuation is not published but the 
investment can be readily disposed of at market value. This 
asset class includes investments primarily in high yield 
bonds.

EMERGING MARKET DEBT. These are level 1 assets 
consisting of a mutual fund with a readily determinable fair 
value, including a published NAV. This asset class includes 
investments primarily in emerging market debt. 

REAL ESTATE FUNDS. These are level 1 assets consisting of 
a mutual fund with a readily determinable fair value, 
including a published NAV. This asset class includes 
investments primarily in real estate investment trust (REIT) 
securities. 

ABSOLUTE RETURN STRATEGY. These are level 2 assets 
consisting of a hedge fund of funds where valuation is not 
published but the investment can be readily disposed of at 
unit price. The hedge fund of funds is valued at the 
weighted average value of investments in various hedge 
funds which in turn are valued at the closing price of the 
underlying securities. This asset class includes investments 
primarily in common stocks and fixed income securities. 

REAL RETURN STRATEGY. These are level 1 assets 
representing a mutual fund with a readily determinable fair 
value, including a published NAV. This asset class includes 
an investment in a broad range of assets primarily including 
fixed income, high-yield bonds, and emerging market debt.

CASH AND CASH EQUIVALENTS. These are level 2 assets 
representing mutual funds without published NAV's but the 
investment can be readily disposed of at NAV. The mutual 
funds are valued at the NAV of the shares held by the plan 
at the valuation date. This asset class primarily includes 
money market mutual funds.

The preceding valuation methods may produce a fair value 
calculation that is not indicative of net realizable value or 
reflective of future fair values. Although we believe these 
valuation methods are appropriate and consistent with other 
market participants, the use of different methodologies or 
assumptions to determine the fair value of certain financial 
instruments could result in a different fair value 
measurement at the reporting date.

Investment securities are exposed to various financial risks 
including interest rate, market, and credit risks. Due to the 
level of risk associated with certain investment securities, it 
is reasonably possible that changes in the values of our 
investment securities will occur in the near term and that 
such changes could materially affect our investment 
account balances and the amounts reported as plan assets 
available for benefits payments.

73

  
The following table presents the fair value of plan assets, including outstanding receivables and liabilities, of the retirement trust 
fund:

In thousands

Investments

U.S. large cap equity

U.S. small/mid cap equity

Non-U.S. equity

Emerging markets equity

Fixed income

Long government/credit

High yield bonds

Emerging market debt

Real estate funds

Absolute return strategy

Real return strategy

Cash and cash equivalents

Total investments

Investments

U.S. large cap equity

U.S. small/mid cap equity

Non-U.S. equity

Emerging markets equity

Fixed income

Long government/credit

High yield bonds

Emerging market debt

Real estate funds

Absolute return strategy

Real return strategy

Cash and cash equivalents

Total investments

Receivables

Accrued interest and dividend income

Due from broker for securities sold

Total receivables

Liabilities

Due to broker for securities purchased

Total investment in retirement trust

December 31, 2013

Level 1

Level 2

Level 3

Total

$

39,124

$

30,465

16,782

7,405

—

33,152

—

9,987

16,559

—

13,031

—

$

79

55

17,202

—

367

32,763

12,890

—

—

35,339

—

1,418

— $

—

—

—

—

—

—

—

—

—

—

—

39,203

30,520

33,984

7,405

367

65,915

12,890

9,987

16,559

35,339

13,031

1,418

$

166,505

$

100,113

$

— $

266,618

December 31, 2012

Level 1

Level 2

Level 3

Total

$

29,047

$

1,891

$

— $

21,624

13,931

8,004

—

30,098

—

11,421

15,992

—

12,932

—

1,312

15,812

—

8,824

29,249

12,017

—

—

32,078

—

1,459

—

—

—

—

—

—

—

—

—

—

—

30,938

22,936

29,743

8,004

8,824

59,347

12,017

11,421

15,992

32,078

12,932

1,459

$

143,049

$

102,642

$

— $

245,691

December 31,

2013

2012

  $

468

$

1,154

  $

1,622

$

388

4,459

4,847

  $

  $

1,178

267,062

$

$

935

249,603

74

 
 
 
 
 
 
 
 
 
 
 
 
 
 
9. INCOME TAX

The following table provides a reconciliation between 
income taxes calculated at the statutory federal tax rate and 
the provision for income taxes reflected in the consolidated 
statements of comprehensive income for the three years 
ended December 31:

Dollars in thousands

2013

2012

2011

Income taxes at federal
statutory rate

Increase (decrease):

Current state income tax,
net of federal tax benefit

Amortization of investment
and energy tax credits

Differences required to be
flowed-through by
regulatory commissions

Gains on company and
trust-owned life insurance

Regulatory asset
impairment

Other, net

$ 35,785

$ 35,764

$ 37,056

4,674

4,773

4,945

(271)

(350)

(442)

2,357

1,718

1,647

(864)

(800)

(786)

—

24

2,700

(402)

—

405

Total provision for income
taxes

$ 41,705

$ 43,403

$ 42,825

Effective tax rate

40.8%

42.5%

40.5%

The decrease in the effective income tax rate for 2013 
compared to 2012 was primarily due to the one-time, after-
tax charge of $2.7 million in 2012 related to the OPUC's rate 
case order that the Company could not recover deferred tax 
amounts resulting from the 2009 Oregon income tax rate 
change.

The provision (benefit) for current and deferred income 
taxes consists of the following at December 31:

In thousands

Current

   Federal

   State

Deferred

   Federal

   State

2013

2012

2011

$

(62) $

1,693

$

(11)

(73)

99

1,792

130

(929)

(799)

35,109

6,669

41,778

31,187

10,424

41,611

35,021

8,603

43,624

Total provision for
income taxes

$ 41,705

$ 43,403

$ 42,825

   Total income taxes paid

$

870

$

2,979

$

1,756

The following table summarizes the total provision (benefit) 
for income taxes for the utility and non-utility business 
segments for the three years ended December 31:

In thousands

Utility:

   Current

   Deferred

Deferred investment
and energy tax credits

Non-utility business
segments:

   Current

   Deferred

2013

2012

2011

$

(73) $

1,909

$

(4,646)

38,073

39,163

49,595

(271)

(350)

(422)

37,729

40,722

44,527

—

3,976

3,976

(117)

2,798

2,681

3,846

(5,548)

(1,702)

Total provision for income
taxes

$ 41,705

$ 43,403

$ 42,825

The following table summarizes the tax effect of significant 
items comprising our deferred income tax accounts for the 
two years ended December 31:

In thousands

Deferred tax liabilities:

   Plant and property

   Regulatory income tax assets

   Regulatory liabilities

   Non-regulated deferred tax liabilities

      Total

Deferred tax assets:

   Regulatory assets

Unfunded pension and postretirement
obligations

   Non-regulated deferred tax assets

Alternative minimum tax credit
carryforward

   Loss and credit carryforwards

      Total

2013

2012

$ 362,160

$ 322,527

56,183

71,971

47,516

60,253

49,197

43,824

$ 537,830

$ 475,801

$

— $

(7,724)

4,112

—

1,939

45,351

51,402

6,024

(1,235)

1,986

32,997

32,048

Deferred income tax liabilities, net

486,428

443,753

Deferred investment tax credits

367

624

Deferred income taxes and investment
tax credits

$ 486,795

$ 444,377

We have determined that we are more likely than not to 
realize all recorded deferred tax assets as of December 31, 
2013.

On December 17, 2010, President Obama signed into law 
the Tax Relief, Unemployment Insurance Reauthorization, 
and Job Creation Act of 2010, which allows 100% bonus 
depreciation for qualified property placed in service between 
September 9, 2010 through December 31, 2011. It also 
extended the 50% bonus depreciation deduction to 
qualifying property placed in service through 2012. On 
January 2, 2013, President Obama signed into law the 
American Taxpayer Relief Act of 2012, which extended 50% 
bonus depreciation under §168(k) through 2013 for modified 
accelerated cost recovery system (MACRS) property with a 
recovery period of 20 years or less. 

75

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Company estimates that it has net operating loss (NOL) 
carryforwards of $113.0 million for federal taxes and $113.7 
million for Oregon taxes at December 31, 2013. The NOL 
carryforwards will be carried forward to reduce our current 
tax liability in future years. We anticipate that we will be able 
to utilize the entire NOL carryforwards before they expire in 
20 years for federal and 15 years for Oregon.

Uncertain tax positions are accounted for in accordance 
with accounting standards that require management’s 
assessment of the expected treatment of a tax position 
taken in a filed tax return, or planned to be taken in a future 
tax return, that has not been reflected in measuring income 
tax expense for financial reporting purposes. Until such 
positions are sustained by the taxing authorities, we would 
not recognize the tax benefits resulting from such positions 
and would report the tax effect as a liability in our 
consolidated balance sheet. As of December 31, 2013, we 
had no reserves for uncertain tax positions.

As of December 31, 2013, the Company was under 
examination by the Internal Revenue Service for tax years 
2009 through 2011, with resolution expected in 2014. The 
Company is also subject to examination for tax year 2012.

In 2012 the Company settled the Oregon Department of 
Revenue examination of tax years 2006 through 2009. This 
settlement resulted in an additional $0.2 million state tax 
expense, including interest, but that amount was offset by a 
corresponding refund claim with the state of California. 

Interest and penalties related to any future income tax 
deficiencies are recorded within income tax expense in the 
consolidated statements of comprehensive income.

10. PROPERTY, PLANT, AND EQUIPMENT

The following table sets forth the major classifications of our 
property, plant, and equipment and accumulated 
depreciation at December 31:

11. GAS RESERVES

Our gas reserves are stated at cost, net of regulatory 
amortization, with the associated deferred tax benefits 
recorded as liabilities on the balance sheet. 

We entered into our agreements with Encana Oil & Gas 
(USA) Inc. (Encana) to develop and produce physical gas 
reserves. These agreements are intended to provide long-
term gas price protection for our utility customers rather than 
serving as a source of gas supply. Encana began drilling in 
2011 under these agreements, and gas, which is currently 
being produced from our working interests in these gas 
fields, is sold by Encana at then prevailing market prices, 
with revenues from such sales, net of associated production 
costs, credited to our cost of gas. The cost of gas, including 
a carrying cost for the net rate base investment, is part of 
our annual Oregon PGA filing, which allows us to recover 
our costs through customer rates in a manner previously 
approved by the OPUC. This transaction acted to hedge the 
cost of gas for approximately 6% of our gas supplies for the 
year ended December 31, 2013. The following table outlines 
our net gas reserves investment at December 31:

In thousands

2013

2012

Gas reserves, current

$

20,646

$

14,966

Gas reserves, non-current

Less: Accumulated amortization

Total gas reserves

Less: Deferred taxes on gas reserves

140,573

18,575

142,644

42,117

92,179

7,486

99,659

28,329

Net investment in gas reserves

$ 100,527

$

71,330

Variable Interest Entity (VIE) Analysis
We concluded that the arrangement with Encana qualifies 
as a variable interest (VI) as our interest represents a minor 
portion of total extraction activities. Our investment is 
included on our balance sheet under gas reserves with our 
maximum loss exposure limited to our current investment 
balance.

In thousands

2013

2012

Utility plant in service

$2,585,901

$2,435,886

12. INVESTMENTS

Utility construction work in progress

28,855

46,831

Less: Accumulated depreciation

827,380

789,201

Utility plant, net

Non-utility plant in service

Non-utility construction work in
progress

Less: Accumulated depreciation

1,787,376

1,693,516

297,330

296,781

6,653

28,485

6,510

23,195

Non-utility plant, net

275,498

280,096

Total property, plant, and equipment

$2,062,874

$1,973,612

The weighted average depreciation rate was 2.8% for utility 
assets and 2.2% for non-utility assets in 2013, 2012, and 
2011.

Accumulated depreciation does not include the accumulated 
provision for asset removal costs of $296.3 million and 
$281.2 million at December 31, 2013 and 2012, 
respectively. These accrued asset removal costs are
reflected on the balance sheets as regulatory liabilities. See 
Note 2.

76

Investments include financial investments in life insurance 
policies, which are accounted for at cash surrender value, 
net of policy loans, and equity investments in certain 
partnerships and limited liability companies, which are 
accounted for under the equity method. The following table 
summarizes our other investments at December 31:

In thousands

2013

2012

Investments in life insurance policies

$ 51,791

$ 51,439

Investments in gas pipeline joint ventures

14,048

14,216

Other

2,012

2,012

   Total other investments

$ 67,851

$ 67,667

Investment in Life Insurance Policies
We have invested in key person life insurance contracts to 
provide an indirect funding vehicle for certain long-term 
employee and director benefit plan liabilities. The amount in 
the above table is reported at cash surrender value, net of 
policy loans.

 
Equity Method Investments
Palomar, a wholly-owned subsidiary of PGH, is pursuing the 
development of a new gas transmission pipeline that would 
provide an interconnection with our utility distribution 
system. PGH is owned 50% by NWN Energy, a wholly-
owned subsidiary of NW Natural, and 50% by TransCanada 
American Investments Ltd., an indirect wholly-owned 
subsidiary of TransCanada Corporation.

VIE Analysis
PGH is a development stage VIE. As of December 31, 
2013, there were no changes to our VIE analysis and, as 
such, we continue to report Palomar under equity method 
accounting based on the determination that we are not the 
primary beneficiary of PGH’s activities, as defined by the 
authoritative guidance related to consolidations, due to the 
fact that we have a 50% share and there are no stipulations 
that allow disproportionate influence over the entity. Our 
investment in PGH and Palomar are included in other 
investments on our balance sheet. Our maximum loss 
exposure related to PGH is limited to our equity investment 
balance, less our share of any cash or other assets 
available to us as a 50% owner.

Impairment Analysis
Our investments in nonconsolidated entities accounted for 
under the equity method are reviewed for impairment at 
each reporting period and following updates to our 
corporate planning assumptions. When it is determined that 
a loss in value is other than temporary, a charge is 
recognized for the difference between the investment’s 
carrying value and its estimated fair value. Fair value is 
based on quoted market prices when available, or on the 
present value of expected future cash flows. Differing 
assumptions could affect the timing and amount of a charge 
recorded in any period.

In 2011, Palomar withdrew its original application with the 
FERC for a proposed natural gas pipeline in Oregon and 
informed FERC that it intended to re-file an application to 
reflect changes in the project scope aligning the project with 
the region’s current and future gas infrastructure needs. 
Palomar continues working with customers in the Pacific  
Northwest to further understand their gas transportation 
needs and determine the commercial support for a revised 
pipeline proposal. A new FERC certificate application is 
expected to be filed to reflect a revised scope based on 
these regional needs.

Due to project scope changes in 2011, a portion of the 
assets were impaired and, as a result, we recorded a pre-
tax charge of $1.3 million for our share of these costs at 
December 31, 2011. There have been no significant 
changes or impairments to the project since 2011. Our 
remaining equity investment was not impaired at December 
31, 2013 as the fair value of expected cash flows from 
planned development exceeded our remaining equity 
investment of $13.4 million at December 31, 2013. 
However, if we learn that the project is not viable or will not 
go forward, then we could be required to recognize a 
maximum charge of up to approximately $13.2 million based 
on the current amount of our equity investment, net of cash 
and working capital at Palomar. We will continue to monitor 
and update our impairment analysis as required.

77

13. DERIVATIVE INSTRUMENTS

We enter into financial derivative contracts to meet our 
utility’s natural gas sales requirements. These contracts 
include swaps, options, and combinations of option 
contracts. We primarily use these derivative financial 
instruments to manage commodity price variability. A small 
portion of our derivative hedging strategy involves foreign 
currency exchange contracts. Our financial derivatives used 
to meet our utility's natural gas requirements qualify for 
regulatory accounting deferral. 

We enter into these financial derivatives, up to prescribed 
limits, to hedge price variability related to our physical gas
 supply contracts as well as to hedge spot purchases of 
natural gas. The foreign currency forward contracts are 
used to hedge the fluctuation in foreign currency exchange 
rates for pipeline demand charges paid in Canadian dollars. 

In the normal course of business, we also enter into 
indexed-price physical forward natural gas commodity 
purchase contracts and options to meet the requirements of 
utility customers. These contracts qualify for regulatory 
deferral accounting treatment. We also enter into exchange 
contracts related to the optimization of our gas portfolio, 
which are derivatives that do not qualify for hedge 
accounting or regulatory deferral, but are subject to our 
regulatory sharing agreement.

Notional Amounts
The following table presents the absolute notional amounts 
related to open positions on our derivative instruments:

In thousands

Natural gas (in therms):

Financial

Physical

Foreign exchange

At December 31,

2013

2012

389,225

395,820

552,500

398,250

$ 15,002

$ 13,231

PGA
Derivatives entered into by the utility for the procurement or 
hedging of natural gas for future gas years and prior to our 
annual PGA filing receive regulatory deferred accounting 
treatment. Derivative contracts entered into after the annual 
PGA rate is set for the current gas contract year are subject 
to our PGA incentive sharing mechanism, which provides for 
either an 80% or 90% deferral of any gains and losses as 
regulatory assets or liabilities, with the remaining 20% or 
10% recognized in current income. For the current gas year 
we have selected the 90% deferral option. In general, our 
commodity hedging for the current gas year is completed 
prior to the start of the upcoming gas year, and hedge prices 
are included in the Company's weighted-average cost of 
gas (WACOG) in the PGA filing. As of November 1, 2013, 
we reached our target hedge percentage for the 2013-14 
gas year, and these hedge prices were included in the PGA 
filing and qualified for regulatory deferral. 

 
Unrealized and Realized Gain/Loss
The following table reflects the income statement presentation for the unrealized gains and losses from our derivative 
instruments. Outstanding derivative instruments related to regulated utility operations are deferred in accordance with regulatory 
accounting standards. 

In thousands

Benefit (expense) to cost of gas
 Less:
 Amounts deferred to regulatory accounts on balance sheet

Total gain in pre-tax earnings

$

$

December 31, 2013

December 31, 2012

Natural gas
commodity

Foreign
exchange

Natural gas
commodity

Foreign
exchange

4,985

$

(300) $

(5,850) $

(4,964)

21

$

300

— $

5,850

— $

65

(65)

—

The cost of foreign currency forward and natural gas derivative contracts are recognized immediately in the cost of gas; however, 
costs above or below the amount embedded in the current year PGA are subject to a regulatory deferral tariff and therefore, are 
recorded as a regulatory asset or liability. 

We realized net losses of $11.0 million and $70.2 million for the years ended December 31, 2013 and 2012, respectively, from 
the settlement of natural gas financial derivative contracts. These realized losses were recorded as increases to the cost of gas. 

Credit Risk Management of Financial Derivatives 
Instruments
No collateral was posted with or by our counterparties as of 
December 31, 2013 or 2012. We attempt to minimize the 
potential exposure to collateral calls by counterparties 
to manage our liquidity risk. Counterparties generally allow a 
certain credit limit threshold before requiring us to post 
collateral against loss positions. Given our counterparty 
credit limits and portfolio diversification, we have not been 
subject to collateral calls in 2013 or 2012. Our collateral call 
exposure is set forth under credit support agreements, 
which generally contain credit limits. We could also be 
subject to collateral call exposure where we have agreed to 
provide adequate assurance, which is not specific as to the 
amount of credit limit allowed, but could potentially require 
additional collateral in the event of a material adverse 
change. Based upon current financial swap and option 
contracts outstanding, which reflect unrealized gains of $5.4 
million at December 31, 2013, we do not have any collateral 
demand exposure.

Our financial derivative instruments are subject to master 
netting arrangements; however, they are presented on a 
gross basis on the face of our statement of financial 
position. The Company and its counterparties have the 
ability to set-off their obligations to each other under 
specified circumstances. Such circumstances may include 
when there is a defaulting party or in the event of a credit 
change due to a merger that affects either party or any other 
termination event.

If netted by counterparty, our derivative position would result 
in an asset of $7.2 million and a liability of $2.5 million as of 
December 31, 2013. As of December 31, 2012, our 
derivative position would result in an asset of $5.6 million 
and a liability of $11.4 million.

We are exposed to derivative credit risk primarily through 
securing pay-fixed natural gas commodity swaps to hedge 
the risk of price increases for our natural gas purchases on 
behalf of customers. We utilize master netting arrangements 
through International Swaps and Derivatives Association 

78

contracts to minimize this risk along with collateral support 
agreements with counterparties based on their credit 
ratings. In certain cases we require guarantees or letters of 
credit from counterparties in order for them to meet our 
minimum credit requirement standards.

Our financial derivatives policy requires counterparties to 
have a certain investment-grade credit rating at the time the 
derivative instrument is entered into, and the policy specifies 
limits on the contract amount and duration based on each 
counterparty’s credit rating. We do not speculate with 
derivatives; instead we utilize derivatives to hedge our 
exposure above risk tolerance limits. Any increase in market 
risk created by the use of derivatives should be offset by the 
exposures they modify.

We actively monitor our derivative credit exposure and place 
counterparties on hold for trading purposes or require other 
forms of credit assurance, such as letters of credit, cash 
collateral or guarantees as circumstances warrant. Our 
ongoing assessment of counterparty credit risk includes 
consideration of credit ratings, credit default swap spreads, 
bond market credit spreads, financial condition, government 
actions and market news. We utilize a Monte-Carlo 
simulation model to estimate the change in credit and 
liquidity risk from the volatility of natural gas prices. We use 
the results of the model to establish earnings-at-risk trading 
limits. Our credit risk for all outstanding financial derivatives 
at December 31, 2013 currently does not extend beyond 
March 2016.

We could become materially exposed to credit risk with one 
or more of our counterparties if natural gas prices 
experience a significant increase. If a counterparty were to 
become insolvent or fail to perform on its obligations, we 
could suffer a material loss, but we would expect such loss 
to be eligible for regulatory deferral and rate recovery, 
subject to prudence review. All of our existing counterparties 
currently have investment-grade credit ratings.

  
 
Gas  Purchase  and  Pipeline  Capacity  Purchase  and 
Release Commitments
We have signed agreements providing for the reservation of 
firm pipeline capacity under which we are required to make 
fixed monthly payments for contracted capacity. The pricing 
component of the monthly payment is established, subject 
to change, by U.S. or Canadian regulatory bodies. In 
addition, we have entered into long-term sale agreements to 
release firm pipeline capacity. We also enter into short-term 
and long-term gas purchase agreements. 

The aggregate amounts of these agreements were as 
follows at December 31, 2013:

In thousands

2014

2015

2016

2017

2018

Thereafter

   Total

Less: Amount
representing
interest

Total at present
value

Gas
Purchase
Agreements

Pipeline
Capacity
Purchase
Agreements

Pipeline
Capacity
Release
Agreements

$

60,692

$

94,923

$

3,739

—

—

—

—

—

60,692

77,433

66,146

52,084

42,263

216,995

549,844

—

—

—

—

—

3,739

20

113,437

—

$

60,672

$

436,407

$

3,739

Our total payments for fixed charges under capacity 
purchase agreements were $98.2 million in 2013, $94.3 
million in 2012, and $94.2 million in 2011. Included in the 
amounts were reductions for capacity release sales of $4.5 
million for 2013, $4.2 million for 2012, and $3.1 million for 
2011. In addition, per-unit charges are required to be paid 
based on the actual quantities shipped under the 
agreements. In certain take-or-pay purchase commitments, 
annual deficiencies may be offset by prepayments subject 
to recovery over a longer term if future purchases exceed 
the minimum annual requirements.

Environmental Matters
See Note 15 Environmental Matters for a discussion of 
environmental commitments and contingencies.

Fair Value
In accordance with fair value accounting, we include 
nonperformance risk in calculating fair value adjustments. 
This includes a credit risk adjustment based on the credit 
spreads of our counterparties when we are in an unrealized 
gain position, or on our own credit spread when we are in an 
unrealized loss position. The inputs in our valuation 
techniques include natural gas futures, volatility, credit 
default swap spreads and interest rates. Additionally, our 
assessment of non-performance risk is generally derived 
from the credit default swap market and from bond market 
credit spreads. The impact of the credit risk adjustments for 
all outstanding derivatives was immaterial to the fair value 
calculation at December 31, 2013. As of December 31, 2013 
and 2012, the net fair value was an asset of $4.7 million and 
a liability of $5.8 million, respectively, using significant other 
observable, or level 2, inputs. We have used no level 3 
inputs in our derivative valuations. We did not have any 
transfers between level 1 or level 2 during the years ended 
December 31, 2013 and 2012. See Note 2.

14. COMMITMENTS AND CONTINGENCIES

Leases
We lease land, buildings, and equipment under agreements 
that expire in various years, including a 99-year land lease 
that extends through 2108. Rental expense under operating 
leases was $5.1 million, $4.8 million and $5.4 million for the 
years ended December 31, 2013, 2012 and 2011, 
respectively. The following table reflects the future minimum 
lease payments due under non-cancelable leases at 
December 31, 2013. These commitments relate principally 
to the lease of our office headquarters, underground gas 
storage facilities, and computer equipment.

In thousands

Operating
leases

Capital
leases

2014

2015

2016

2017

2018

Thereafter

   Total

$

5,611

$

462

$

5,530

5,510

5,506

2,858

34,836

196

82

12

—

—

Minimum
lease
payments

6,073

5,726

5,592

5,518

2,858

34,836

$

59,851

$

752

$

60,603

79

 
15. ENVIRONMENTAL MATTERS

We own, or previously owned, properties that may require 
environmental remediation or action. We estimate the range 
of loss for environmental liabilities based on current 
remediation technology, enacted laws and regulations, 
industry experience gained at similar sites and an 
assessment of the probable level of involvement and 
financial condition of other potentially responsible parties. 
Due to the numerous uncertainties surrounding the course 
of environmental remediation and the preliminary nature of 
several site investigations, in some cases, we may not be 
able to reasonably estimate the high end of the range of 
possible loss. In those cases, we have disclosed the nature 
of the possible loss and the fact that the high end of the 
range cannot be reasonably estimated. Unless there is an 
estimate within a range of possible losses that is more likely 
than other cost estimates within that range, we record the 
liability at the low end of this range. It is likely that changes 
in these estimates and ranges will occur throughout the 
remediation process for each of these sites due to our 
continued evaluation and clarification concerning our 
responsibility, the complexity of environmental laws and 
regulations and the determination by regulators of 
remediation alternatives. 

In the 2012 Oregon general rate case, the new SRRM 
mechanism was approved to recover the Company's 
deferred environmental costs. The Commission ordered a 
separate docket to determine the prudence of deferred 
costs, the allocation of insurance proceeds, and an earnings 
test that would be applied to past and future deferred costs. 

In July 2013, all parties filed a settlement agreement with 
the OPUC to address how to apply the new mechanism. In 
November, the Commission rejected the settlement and 
ordered further proceedings. We have established a 
schedule with parties for 2014 and are working toward 
resolution of this matter. 

In Washington, cost recovery and carrying charges on 
amounts deferred for costs associated with services 
provided to Washington customers will be determined in a 
future proceeding. We annually review all regulatory assets 
for recoverability and more often if circumstances warrant. If 
we should determine that all or a portion of these regulatory 
assets no longer meet the criteria for continued application 
of regulatory accounting, then we would be required to write 
off the net unrecoverable balances against earnings in the 
period such determination is made. 

In December 2010, NW Natural commenced litigation 
against certain of its historical liability insurers in Multnomah 
County Circuit Court, State of Oregon (see Part I, Item 3 
"Legal Proceedings"). In the complaint, NW Natural sought 
damages in excess of $50 million in losses it incurred 
through the date of the complaint, as well as declaratory 
relief for additional losses it expects to incur in the future. As 
of February 6, 2014, we had settled with all defendant 
insurance companies in this litigation. As a result of this 
settlement, the Company expects to receive additional 
payments aggregating approximately $102 million in 2014 
related to the settlements. Such payments are to be made in 
the first and second quarters of 2014. Through December 
31, 2013, we have received approximately $48 million. See 
Note 17 for additional information. 

Environmental Sites
The following table summarizes information regarding liabilities related to environmental sites, which are recorded in other 
current liabilities and other noncurrent liabilities on the balance sheet at December 31: 

In thousands

Portland Harbor site:

Gasco/Siltronic Sediments

Other Portland Harbor

Gasco Upland site

Siltronic Upland site

Central Service Center site

Front Street site

Oregon Steel Mills

Total

Current Liabilities

Non-Current Liabilities

2013

2012

2013

2012

$

1,278

$

2,207

$

37,954

$

36,087

1,766

11,010

763

85

1,274

—

1,767

18,722

3,478

39,508

637

140

993

—

406

248

122

179

3,160

5,028

379

396

—

185

$

16,176

$

24,466

$

81,895

$

45,235

80

The following table presents information regarding the total 
amount of cash paid for environmental sites and the total 
regulatory asset deferred as of December 31:

In thousands

Cash paid(1)

2013

2012

$

98,817

$

71,124

Total regulatory asset deferral(2)

148,389

121,144

(1) Includes $20.1 million reclassified to utility plant in 2013 
associated with the water treatment station of which a portion was 
paid in 2012.
(2) Includes cash paid, remaining liability, and interest, net of 
insurance reimbursement and amounts reclassified to utility plant 
for the water treatment station.

PORTLAND HARBOR SITE. The Portland Harbor is an 
EPA listed Superfund site that is approximately 11 miles 
long on the Willamette River and is adjacent to NW 
Natural's Gasco upland and Siltronic upland sites. We have 
been notified that we are a potentially responsible party to 
the Superfund site and we have joined with other potentially 
responsible parties (the Lower Willamette Group or LWG) to 
develop a Portland Harbor Remedial Investigation/
Feasibility Study (RI/FS). The LWG submitted a draft 
Feasibility Study (FS) to the Environmental Protection 
Agency (EPA) in March 2012 that provides a range of 
remedial costs for the entire Portland Harbor Superfund 
Site, which includes the Gasco/Siltronic Sediment site, 
discussed below. The range of costs estimated for various 
remedial alternatives for the entire Portland Harbor, as 
provided in the draft FS, is $169 million to $1.8 billion. NW 
Natural's potential liability is a portion of the costs of the 
remedy the EPA will select for the entire Portland Harbor 
Superfund site. The cost of that remedy is expected to be 
allocated among more than 100 potentially responsible 
parties. NW Natural is participating in a non-binding 
allocation process in an effort to settle this potential liability. 
We manage our liability related to the Superfund site as two 
distinct remediation projects, the Gasco/Siltronic Sediment 
and Other Portland Harbor projects.

Gasco/Siltronic Sediments. In 2009, NW Natural and Siltronic 
Corporation entered into a separate Administrative Order on 
Consent with the EPA to evaluate and design specific 
remedies for sediments adjacent to the Gasco upland and 
Siltronic upland sites. NW Natural submitted a draft 
Engineering Evaluation/Cost Analysis (EE/CA) to the EPA in 
May 2012 to provide the estimated cost of potential remedial
alternatives for this site. At this time, the estimated costs for 
the various sediment remedy alternatives in the draft EE/CA 
range from $39.2 million to $350 million. We have recorded 
a liability of $39.2 million for the sediment clean-up, which 
reflects the low end of the EE/CA range, as well as costs for 
the additional studies and design work needed before the 
clean-up can occur, and for regulatory oversight throughout 
the clean-up. At this time, we believe sediments at this site 
represent the largest portion of our liability related to the 
Portland Harbor site, discussed above. 

Other Portland Harbor. NW Natural incurs costs related to its 
membership in the LWG which is performing the RI/FS for 
the EPA. NW Natural also incurs costs related to natural 
resource damages from these sites. The Company and 

81

other parties have signed a cooperative agreement with the 
Portland Harbor Natural Resource Trustee council to 
participate in a phased natural resource damage 
assessment to estimate liabilities to support an early 
restoration-based settlement of natural resource damage 
claims. Natural resource damage claims may arise only 
after a remedy for clean-up has been settled. We have 
accrued a liability for these claims which is at the low end of 
the range of the potential liability and the high end of the 
range cannot be reasonably estimated. This liability is not 
included in the range of costs provided in the draft FS for 
the Portland Harbor.

Gasco upland site. NW Natural owns a former gas 
manufacturing plant that was closed in 1958 (Gasco site) 
and is adjacent to the Portland Harbor site described above. 
The Gasco site has been under investigation by us for 
environmental contamination under the ODEQ Voluntary 
Clean-Up Program. It is not included in the range of 
remedial costs for the Portland Harbor site. We manage the 
Gasco site in two parts, the uplands portion and the 
groundwater source control action. 

In May 2007, we completed a revised Remedial 
Investigation Report for the uplands portion and submitted it 
to ODEQ for review. We have recognized a liability for the 
remediation of the uplands portion of the site which is at the 
low end of the range of potential liability and the high end of 
the range cannot be reasonably estimated at this time.

In September 2013, we completed construction and placed 
into service a groundwater source control system, including 
a water treatment station, at the Gasco site. We are working 
with ODEQ on monitoring the effectiveness of the system 
and at this time it is unclear what, if any, additional actions 
ODEQ may require subsequent to the initial testing of the 
system or as part of the final remedy for the uplands portion 
of the Gasco site. We have estimated the cost associated 
with the ongoing operation of the system and have 
recognized a liability which is at the low end of the range of 
potential cost. We cannot estimate the high end of the range 
due to the uncertainty associated with the duration of 
running the water treatment station, which will be highly 
dependent upon the remedy determined for both the upland 
portion as well as the final remedy for our Gasco sediment 
exposure.  

On October 28, 2013, the OPUC approved placing $19.0 
million of capital costs associated with constructing a water 
treatment station at our Gasco environmental site into rates 
beginning November 1, 2013. These amounts are subject to 
refund, with interest, in the event the Commission 
determines, through a separate docket, that any of these 
costs were incurred imprudently. On February 13, 2014, NW 
Natural filed an all-party stipulation in the proceeding with 
the OPUC, which if approved would deem Gasco 
construction costs prudent and would also approve applying 
$2.5 million of insurance proceeds plus interest to reduce 
the Gasco costs included in rates beginning November 1, 
2014.

Other sites. In addition to those sites above, we have 
environmental exposures at four other sites: Siltronic, 
Central Service Center, Front Street, and Oregon Steel 
Mills. Due to the uncertainty of the design of remediation, 
regulation, timing of the liabilities, and in the case of the 
Oregon Steel Mills site, pending litigation, liabilities for each 
of these sites has been recognized at their respective low 
end of the range of potential liability; the high end of the 
range could not be reasonably estimated as of December 
31, 2013. 

Siltronic upland site. Siltronic is the location of a 
manufactured gas plant formerly owned by NW Natural. We 
are currently conducting an investigation of manufactured 
gas plant wastes on the uplands at this site for the ODEQ. 

Central Service Center site. We are currently performing an 
environmental investigation of the property under the 
ODEQ's Independent Cleanup Pathway. This site is on 
ODEQ's list of sites with confirmed releases of hazardous 
substances, and cleanup is necessary. 

Front Street site. The Front Street site was the former 
location of a gas manufacturing plant we operated. Studies 
for source control investigation have been presented to 
ODEQ and a final sampling plan required by ODEQ is 
currently being developed. 

Oregon Steel Mills site. See “Legal Proceedings,” below.

Legal Proceedings
NW Natural is subject to claims and litigation arising in the 
ordinary course of business. Although the final outcome of 
any of these legal proceedings cannot be predicted with 
certainty, including the matter described below, NW Natural 
does not expect that the ultimate disposition of any of these 
matters will have a material effect on our financial condition, 
results of operations or cash flows. See also Part I, Item 3, 
“Legal Proceedings.”

OREGON STEEL MILLS SITE. In 2004, NW Natural was 
served with a third-party complaint by the Port of Portland 
(the Port) in a Multnomah County Circuit Court case, 
Oregon Steel Mills, Inc. v. The Port of Portland. The Port 
alleges that in the 1940s and 1950s petroleum wastes 
generated by our predecessor, Portland Gas & Coke 
Company, and 10 other third-party defendants, were 
disposed of in a waste oil disposal facility operated by the 
United States or Shaver Transportation Company on 
property then owned by the Port and now owned by Oregon 
Steel Mills. The complaint seeks contribution for unspecified 
past remedial action costs incurred by the Port regarding the 
former waste oil disposal facility as well as a declaratory 
judgment allocating liability for future remedial action 
costs. No date has been set for trial. Although the final 
outcome of this proceeding cannot be predicted with 
certainty, we do not expect that the ultimate disposition of 
this matter will have a material effect on our financial 
condition, results of operations or cash flows.

82

 
 
 
16. REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS

During the first quarter of 2013, we identified an error in the rate used to calculate interest on certain regulatory assets. 
Accounting standards allow for the capitalization of all or part of an incurred cost that would otherwise be charged to expense if 
the regulator provides orders that create probable recovery of past costs through future revenues. Historically we had accrued 
interest as specified by regulatory order on certain regulatory balances at our authorized rate of return (ROR). This ROR 
includes both a debt and equity component, which we are allowed to recover from customers in the form of a carrying cost on 
regulatory deferred account balances. As the equity component of our ROR is not an incurred cost that would otherwise be 
charged to expense, this portion of the carrying cost should not have been capitalized for financial reporting purposes. 

We assessed the materiality of this error on prior period financial statements and concluded it was not material to any prior 
annual or interim periods; however, the cumulative impact would have been material to the annual and interim periods for 2013, 
if corrected in 2013. As a result, in accordance with accounting standards, we revised our prior period financial statements as 
described below to correct this error. The revision had no effect on reported cash flows.

The adjustment impacted years 2003 through 2012 with a cumulative pre-tax decrease over that period of $5.6 million to 
regulatory assets and other income and expense. The revision decreased net income by $1.1 million and $0.9 million for the 
years ended December 31, 2012 and 2011, respectively. The cumulative decrease to January 1, 2011 retained earnings was 
$1.4 million as a result of the revision. 

The following table presents the income statement impacts of this revision for the years ended December 31:

In thousands, except per share data

Other income and expense, net

Income before income taxes

Income tax expense

Net Income

Comprehensive income

Basic EPS

Diluted EPS

Reported
Balance

2012

Adjust-
ment

Adjusted
Balance

Reported
Balance

2011

Adjust-
ment

Adjusted
Balance

$

4,936

$

(1,777) $

3,159

$

4,523

$

(1,411) $

3,112

103,959

(1,777)

102,182

107,280

(1,411)

105,869

44,104

59,855

58,364

2.23

2.22

(701)

(1,076)

(1,076)

(0.04)

(0.04)

43,403

58,779

57,288

2.19

2.18

43,382

63,898

62,702

2.39

2.39

(557)

(854)

(854)

(0.03)

(0.03)

42,825

63,044

61,848

2.36

2.36

The following table presents the balance sheet impacts of this revision as of December 31:  

In thousands

Non-current assets:

Regulatory assets

Total non-current assets

Total assets

Liabilities and equity:

2012

2011

Reported
Balance

Adjustment

Adjusted
Balance

Reported
Balance

Adjustment

Adjusted
Balance

$

387,888

$

(5,633) $

2,535,054

2,818,753

(5,633)

(5,633)

382,255
2,529,421

2,813,120

$

371,392
2,397,885

$

2,746,574

(3,856) $
(3,856)
(3,856)

367,536

2,394,029

2,742,718

Deferred credits and other non-current liabilities:

Deferred tax liabilities

$

446,604

$

(2,227) $

444,377

$

413,209

$

(1,526) $

411,683

Total deferred credits and other non-current
liabilities

1,025,584

(2,227)

1,023,357

975,922

(1,526)

974,396

Equity:

Retained earnings

Total equity

Total liabilities and equity

385,753

733,033

2,818,753

(3,406)

(3,406)

(5,633)

382,347

729,627
2,813,120

373,905

714,488
2,746,574

(2,330)
(2,330)
(3,856)

371,575

712,158

2,742,718

83

The following tables present the income statement and balance sheet corrections for the following quarters:

First Quarter

Second Quarter

Third Quarter

Fourth Quarter

2012

In thousands, except per share data

Reported
Balance

Adjusted
Balance

Reported
Balance

Adjusted
Balance

Reported
Balance

Adjusted
Balance

Reported
Balance

Adjusted
Balance

Other income and expense, net

$

1,005

$

472

$

921

$

620

$

1,710

$

1,180

$

1,300

$

887

Income (loss) before income taxes

Income tax expense (benefit)

Net income (loss)

Comprehensive income (loss)

Basic EPS

Diluted EPS

Non-current assets:

Regulatory assets

68,480

27,873

40,607

40,773

1.52

1.51

67,947

27,663

40,284

40,450

1.50

1.50

2,296

887

1,409

1,575

0.05

0.05

1,995

768

1,227

1,393

0.05

0.05

(13,594)

(14,124)

(3,036)

(3,245)

(10,558)

(10,879)

(10,391)

(10,712)

(0.39)

(0.39)

(0.41)

(0.41)

46,777

18,380

28,397

26,407

1.06

1.05

46,364

18,217

28,147

26,157

1.05

1.04

$ 368,521

$ 364,132

$ 366,981

$ 362,290

$ 367,692

$ 362,472

$ 387,888

$ 382,255

Total non-current assets

2,416,372

2,411,983

2,448,359

2,443,668

2,492,467

2,487,247

2,535,054

2,529,421

Total assets

Liabilities and equity:

Deferred credits and other non-
current liabilities:
Deferred tax liabilities

Total deferred credits and other
non-current liabilities

Equity:

Retained earnings

Total equity

2,727,262

2,722,873

2,635,141

2,630,450

2,690,368

2,685,148

2,818,753

2,813,120

$ 438,486

$ 436,750

$ 440,073

$ 438,217

$ 430,885

$ 428,821

$ 446,604

$ 444,377

999,028

997,292

991,007

989,151

985,729

983,665

1,025,584

1,023,357

402,599

399,946

745,971

743,318

392,082

737,570

389,247

734,735

369,584

717,559

366,428

714,403

385,753

733,033

382,347

729,627

Total liabilities and equity

2,727,262

2,722,873

2,635,141

2,630,450

2,690,368

2,685,148

2,818,753

2,813,120

First Quarter

Second Quarter

Third Quarter

Fourth Quarter

2011

In thousands, except per share data

Reported
Balance

Adjusted
Balance

Reported
Balance

Adjusted
Balance

Reported
Balance

Adjusted
Balance

Reported
Balance

Adjusted
Balance

Other income and expense, net

$

1,214

$

1,291

$

1,122

$

779

$

1,781

$

1,426

$

406

$

(384)

Income (loss) before income taxes

Income tax expense (benefit)

Net income (loss)

Comprehensive income (loss)

Basic EPS

Diluted EPS

Non-current assets:

Regulatory assets

68,627

27,854

40,773

40,919

1.53

1.53

68,704

27,884

40,820

40,966

1.53

1.53

3,509

1,316

2,193

2,339

0.08

0.08

3,166

1,181

1,985

2,131

0.07

0.07

(14,012)

(14,367)

(5,700)

(8,312)

(8,166)

(0.31)

(0.31)

(5,840)

(8,527)

(8,381)

(0.32)

(0.32)

49,156

19,912

29,244

27,610

1.09

1.09

48,366

19,600

28,766

27,132

1.08

1.07

$ 345,452

$ 343,085

$ 326,081

$ 323,371

$ 328,757

$ 325,692

$ 371,392

$ 367,536

Total non-current assets

2,290,848

2,288,481

2,294,100

2,291,390

2,317,293

2,314,228

2,397,885

2,394,029

Total assets

2,571,553

2,569,186

2,521,994

2,519,284

2,567,840

2,564,775

2,746,574

2,742,718

Liabilities and equity:

Deferred credits and other non-
current liabilities:

Deferred tax liabilities

$ 396,357

$ 395,419

$ 398,825

$ 397,751

$ 394,217

$ 393,003

$ 413,209

$ 411,683

Total deferred credits and other
non-current liabilities

Equity:

Retained earnings

Total equity

873,714

872,776

874,842

873,768

866,927

865,713

975,922

974,396

385,899

384,470

376,489

374,853

356,574

354,723

373,905

371,575

723,228

721,799

714,628

712,992

696,605

694,754

714,488

712,158

Total liabilities and equity

2,571,553

2,569,186

2,521,994

2,519,284

2,567,840

2,564,775

2,746,574

2,742,718

84

17. SUBSEQUENT EVENT 

In December 2010, NW Natural commenced litigation 
against certain of its historical liability insurers. NW Natural 
alleged that the defendant insurance companies issued third 
party liability insurance policies to NW Natural and that the 
defendants had breached the terms of those policies by 
failing to reimburse and indemnify NW Natural for liabilities 
arising from environmental contamination at certain sites 
caused or alleged to be caused by its historical operations. 

NW Natural sought damages in excess of $50 million in 
losses it had incurred through the date of the complaint, as 
well as declaratory relief for additional damages it expected 
to incur in the future. Settlements with certain of the 
defendant insurance companies resulted in payments 
received by NW Natural through December 31, 2013 of 
approximately $48 million. 

In January and February 2014, the remaining defendant 
insurance companies agreed to settle all of NW Natural’s 
claims. In 2014 the Company expects to receive additional 
payments aggregating approximately $102 million under 
settlement agreements signed in 2013 and 2014. Such 
payments are to be made in the first and second quarters of 
2014. As a result of such settlements, the Company 
anticipates dismissal of the litigation in the second quarter of 
2014. 

The settlements are recognized in regulatory accounts with 
the treatment determined through the SRRM. We expect the 
open regulatory docket regarding SRRM to be resolved 
during 2014.

85

NORTHWEST NATURAL GAS COMPANY
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

Quarter ended

In thousands, except share data

March 31

June 30

September 30

December 31

2013

Operating revenues

Net income (loss)

Basic earnings (loss) per share(1)

Diluted earnings (loss) per share(1)

2012

Operating revenues
Net income (loss)(2)

Basic earnings (loss) per share(1)(2)

Diluted earnings (loss) per share(1)(2)

$

277,861

$

131,714

$

88,195

$

37,639

1.40

1.40

2,126

0.08

0.08

(8,233)

(0.31)

(0.31)

$

309,639

$

103,991

$

87,501

$

40,284

1.50

1.50

1,227

0.05

0.05

(10,879)

(0.41)

(0.41)

260,748

29,006

1.07

1.07

229,476

28,147

1.05

1.04

(1) Quarterly earnings (loss) per share are based upon the average number of common shares outstanding during each quarter. Variations in 
earnings between quarterly periods are due primarily to the seasonal nature of our business. 
(2) Prior period balances have been adjusted for a prior period error identified during the first quarter of 2013. See Note 16 for reconciliation to 
amounts previously reported.

NORTHWEST NATURAL GAS COMPANY
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

COLUMN A

COLUMN B

COLUMN C

Additions

COLUMN D

COLUMN E

Deductions

In thousands (year ended December 31)

2013

Reserves deducted in balance sheet from
assets to which they apply:

Allowance for uncollectible accounts

2012

Reserves deducted in balance sheet from
assets to which they apply:

Allowance for uncollectible accounts

2011

Reserves deducted in balance sheet from
assets to which they apply:

Allowance for uncollectible accounts

$

$

$

Balance at
beginning of
period

Charged to
costs and
expenses

Charged to
other accounts

Net write-offs

Balance at end
of period

2,518

$

199

$

— $

1,061

$

1,656

2,895

$

1,130

$

— $

1,507

$

2,518

2,950

$

1,919

$

— $

1,974

$

2,895

86

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 9. CHANGES IN AND DISAGREEMENTS 
WITH ACCOUNTANTS ON ACCOUNTING AND 
FINANCIAL DISCLOSURE

None.

periods specified in the Securities and Exchange 
Commission (SEC) rules and forms and that such 
information is accumulated and communicated to 
management, including the Chief Executive Officer and 
Chief Financial Officer, as appropriate to allow timely 
decisions regarding required disclosure.

ITEM 9A. CONTROLS AND PROCEDURES

(b) Changes in Internal Control Over Financial Reporting

(a) Evaluation of Disclosure Controls and Procedures

Our management, under the supervision and with the 
participation of our Chief Executive Officer and Chief 
Financial Officer, has completed an evaluation of the 
effectiveness of the design and operation of our disclosure 
controls and procedures (as defined in Rules 13a-15(e) and 
15d-15(e) of the Securities Exchange Act of 1934, as 
amended (the Exchange Act)). Based upon this evaluation, 
our Chief Executive Officer and Chief Financial Officer have 
concluded that, as of the end of the period covered by this 
report, our disclosure controls and procedures were 
effective to ensure that information required to be disclosed 
by us and included in our reports filed or submitted under 
the Exchange Act is recorded, processed, summarized and 
reported within the time 

Our management is responsible for establishing and 
maintaining adequate internal control over financial 
reporting, as such term is defined in the Exchange Act Rule 
13a-15(f).

There have been no changes in our internal control over 
financial reporting that occurred during the quarter ended 
December 31, 2013 that have materially affected, or are 
reasonably likely to materially affect, our internal control 
over financial reporting. The statements contained in Exhibit 
31.1 and Exhibit 31.2 should be considered in light of, and 
read together with, the information set forth in this Item 9(a).

ITEM 9B. OTHER INFORMATION

None.

87

 
 
 
 
 
PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information concerning our Board of Directors, its Committees and the Audit Committee financial expert contained in NW 
Natural’s definitive Proxy Statement for the May 22, 2014 Annual Meeting of Shareholders is hereby incorporated by reference. 
The information concerning "Section 16(a) Beneficial Ownership Reporting Compliance" and "Corporate Governance" contained 
in our definitive Proxy Statement for the May 22, 2014 Annual Meeting of Shareholders is hereby incorporated by reference.

Name

Gregg S. Kantor

David H. Anderson

Stephen P. Feltz

Margaret D. Kirkpatrick

Lea Anne Doolittle

J. Keith White

David R. Williams

Grant M. Yoshihara

C. Alex Miller

MardiLyn Saathoff

Brody J. Wilson

David A. Weber

Age at
Dec. 31,
2013
56

52

58

59

58

60

60

58

56

57

34

54

Positions held during last five years

President and Chief Executive Officer (2009-   ); President and Chief
Operating Officer (2007-2008); Executive Vice President (2006-2007);
Senior Vice President, Public and Regulatory Affairs (2003-2006).
Executive Vice President and Chief Operating Officer (2014-  );
Executive Vice President Operations and Regulation (2013-2014);
Senior Vice President and Chief Financial Officer (2004-2013).

Senior Vice President and Chief Financial Officer (2013-  ); Assistant
Secretary (2007- ); Treasurer and Controller (1999-2013).

Senior Vice President and General Counsel (2013-  ); Vice President
and General Counsel (2005-2013).

Senior Vice President and Chief Administrative Officer (2013-  ); Senior
Vice President (2008- ); Vice President, Human Resources
(2000-2007).

Vice President, Business Development and Energy Supply/Chief
Strategic Officer (2007-  ); Managing Director, Gas Operations and
Wholesale Services (2005-2006); Managing Director and Chief
Strategic Officer (2003-2005).

Vice President, Utility Services (2007-  ); Director of Utility Operations,
Districts and Managed Labor Relations (2004-2006).

Vice President, Utility Operations (2007-   ); Managing Director, Utility
Services (2005-2006); Director, Utility Services (2004-2005).

Vice President Regulation and Treasurer (2013-  ); Vice President,
Finance and Regulation (2009-2013); Assistant Treasurer (2008-2013);
General Manager of Rates and Regulatory Affairs (2002-2009).

Vice President Legal, Risk and Compliance (2013-  ); Deputy General
Counsel (2010-2013); Chief Governance Officer and Corporate
Secretary (2008-  ); Chief Compliance Officer and Assistant General
Counsel, Tektronix, Inc. (2005-2008).
Controller (2013-  ); Acting Controller (2013); Accounting Director
(2012-2013); Senior Manager, PriceWaterhouseCoopers LLP
(2009-2012); Manager, PriceWaterhouseCoopers LLP (2007-2009).

President and Chief Executive Officer, NW Natural Gas Storage, LLC
and Gill Ranch Storage, LLC (2012-  ); Interim President and Chief
Executive Officer, NW Natural Gas Storage LLC, and Gill Ranch
Storage, LLC (2011-2012); Chief Operating Officer NW Natural Gas
Storage, LLC and Gill Ranch Storage LLC (November 2010 - January
2011); Managing Director of Information Services and Chief
Information Officer (2005 - 2011); Director of Information Services and
Chief Information Officer (2001-2005).

Each executive officer serves successive annual terms; present terms end on May 22, 2014. There are no family relationships 
among our executive officers, directors or any person chosen to become one of our officers or directors.

NW Natural has adopted a Code of Ethics (Code) applicable to all employees and officers that is available on our website at 
www.nwnatural.com. We intend to disclose on our website at www.nwnatural.com any amendments to the Code or waivers of 
the Code for executive officers.

88

 
  
ITEM 11. EXECUTIVE COMPENSATION

The information concerning "Executive Compensation", "Report of the Organization and Executive Compensation Committee", 
and "Compensation Committee Interlocks and Insider Participation" contained in our definitive Proxy Statement for the May 22, 
2014 Annual Meeting of Shareholders is hereby incorporated by reference. Information related to Executive Officers as of 
December 31, 2013 is reflected in Part III, Item 10, above.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND 
RELATED STOCKHOLDER MATTERS

The following table sets forth information regarding compensation plans under which equity securities of NW Natural are 
authorized for issuance as of December 31, 2013 (see Note 6 to the Consolidated Financial Statements):

Plan Category

Equity compensation plans approved by security holders:
LTIP Performance Share Awards (Target Award)(1)(2)
LTIP Restricted Stock Units (Target Award)(1)(2)
LTIP Stock Options(2)

Restated Stock Option Plan

Employee Stock Purchase Plan

Equity compensation plans not approved by security holders:

Executive Deferred Compensation Plan (EDCP)(3)
Directors Deferred Compensation Plan (DDCP)(3)
Deferred Compensation Plan for Directors and Executives (DCP)(4)

Total

(a)

(b)

(c)

Number of securities
to be issued upon
exercise of
outstanding options,
warrants and rights

Weighted-average
exercise price of
outstanding options,
warrants and rights

Number of securities
remaining available
for future issuance
under equity
compensation plans
(excluding securities
reflected in column
(a))

152,007

50,972

—

492,150

$

26,191

1,326

55,253

134,711

912,610

n/a

n/a

—

42.89

35.69

n/a

n/a

n/a

443,198

443,198

250,000

—

95,993

n/a

n/a

n/a

789,191

(1)  Shares issued pursuant to Performance Share Awards and Restricted Stock Units under the LTIP do not include an exercise price, but are 
payable when the award criteria are satisfied. If the maximum awards were paid pursuant to the Performance Share Awards outstanding at 
December 31, 2013, the number of shares shown in column (a) would increase by 152,007 shares and the number of shares shown in 
column (c) would decrease by the same amount of shares.
The aggregate 443,198 shares are available for future issuance under the LTIP as Restricted Stock Units, Performance Share Awards, or 
LTIP Stock Options. An additional 250,000 shares are available for LTIP Stock Option Issuance at December 31, 2013, but those additional 
shares are not available for issuance of LTIP Restricted Stock Units or Performance Share Awards. 

(2) 

(3)  Prior to January 1, 2005, deferred amounts were credited, at the participant’s election, to either a “cash account” or a “stock account.” If 
deferred amounts were credited to stock accounts, such accounts were credited with a number of shares of NW Natural common stock 
based on the purchase price of the common stock on the next purchase date under our Dividend Reinvestment and Direct Stock Purchase 
Plan, and such accounts were credited with additional shares based on the deemed reinvestment of dividends. Cash accounts are credited 
quarterly with interest at a rate equal to Moody’s Average Corporate Bond Yield plus two percentage points, subject to a 6% minimum rate. 
At the election of the participant, deferred balances in the stock accounts are payable after termination of Board service or employment in a 
lump sum, in installments over a period not to exceed 10 years in the case of the DDCP, or 15 years in the case of the EDCP, or in a 
combination of lump sum and installments. Amounts credited to stock accounts are payable solely in shares of common stock and cash for 
fractional shares, and amounts in the above table represent the aggregate number of shares credited to participant's stock accounts. We 
have contributed common stock to the trustee of the Umbrella Trusts such that the Umbrella Trusts hold approximately the number of 
shares of common stock equal to the number of shares credited to all participants’ stock accounts.

(4)  Effective January 1, 2005, the EDCP and DDCP were closed to new participants and replaced with the DCP. The DCP continues the basic 
provisions of the EDCP and DDCP under which deferred amounts are credited to either a “cash account” or a “stock account.” Stock 
accounts represent a right to receive shares of NW Natural common stock on a deferred basis, and such accounts are credited with 
additional shares based on the deemed reinvestment of dividends. Effective January 1, 2007, cash accounts are credited quarterly with 
interest at a rate equal to Moody’s Average Corporate Bond Yield. Our obligation to pay deferred compensation in accordance with the 
terms of the DCP will generally become due on retirement, death, or other termination of service, and will be paid in a lump sum or in 
installments of five, 10, or 15 years as elected by the participant in accordance with the terms of the DCP. Amounts credited to stock 
accounts are payable solely in shares of common stock and cash for fractional shares, and amounts in the above table represent the 
aggregate number of shares credited to participant's stock accounts. We have contributed common stock to the trustee of the Supplemental 
Trust such that this trust holds approximately the number of common shares equal to the number of shares credited to all participants' stock 
accounts. The right of each participant in the DCP is that of a general, unsecured creditor of the Company.

The information captioned “Beneficial Ownership of Common Stock by Directors and Executive Officers” and "Security 
Ownership of Common Stock of Certain Beneficial Owners" contained in our definitive Proxy Statement for the May 22, 2014 
Annual Meeting of Shareholders is incorporated herein by reference.

89

  
 
 
 
 
 
 
 
 
ITEM 13. CERTAIN RELATIONSHIPS AND 
RELATED TRANSACTIONS, AND DIRECTOR 
INDEPENDENCE

The information captioned "Transactions with Related 
Persons" and "Corporate Governance" in the Company’s 
definitive Proxy Statement for the May 22, 2014 Annual 
Meeting of Shareholders is hereby incorporated by 
reference.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND 
SERVICES

The information captioned "2013 and 2012 Audit Firm Fees" 
in the Company’s definitive Proxy Statement for the May 22, 
2014 Annual Meeting of Shareholders is hereby 
incorporated by reference.

90

 
 
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)  The following documents are filed as part of this report:

PART IV

1.  A list of all Financial Statements and Supplemental Schedules is incorporated by reference to Item 8.

2.  List of Exhibits filed:

Reference is made to the Exhibit Index commencing on page 93.

91

  
 
SIGNATURES

Pursuant  to  the  requirements  of  Section  13  or  15(d)  of  the 
Securities  Exchange  Act  of  1934,  the  registrant  has  duly 
caused  this  report  to  be  signed  on  its  behalf  by  the 
undersigned, thereunto duly authorized.

NORTHWEST NATURAL GAS COMPANY

By: /s/ Gregg S. Kantor
Gregg S. Kantor
President and Chief Executive Officer
Date: February 28, 2014      

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons 
on behalf of the registrant and in the capacities and on the date indicated.

Signature

/s/ Gregg S. Kantor

Gregg S. Kantor

President and Chief Executive Officer

/s/ Stephen P. Feltz  

Stephen P. Feltz

Senior Vice President and Chief Financial Officer

/s/ Brody J. Wilson   

Brody J. Wilson

Controller

/s/ Timothy P. Boyle 

Timothy P. Boyle 

/s/ Martha L. Byorum     

Martha L. Byorum

/s/ John D. Carter     

John D. Carter

/s/ Mark S. Dodson

Mark S. Dodson

/s/ C. Scott Gibson

C. Scott Gibson

/s/ Tod R. Hamachek

Tod R. Hamachek

/s/ Jane L. Peverett 

Jane L. Peverett 

/s/ Kenneth Thrasher  

Kenneth Thrasher

Title

Date

Principal Executive Officer and Director

February 28, 2014

Principal Financial Officer

February 28, 2014

Principal Accounting Officer

February 28, 2014

)

)
)
)

)
)
)

)
)
)

)
February 28, 2014
)

)
)
)

)
)
)

)
)
)

)

  Director

  Director

  Director

  Director

  Director

  Director

  Director

  Director

92

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NORTHWEST NATURAL GAS COMPANY
 Exhibit Index to Annual Report on Form 10-K
For the Fiscal Year Ended December 31, 2013 

Exhibit Number                                                        Document

*3a.

*3b.

*4a.

*4b.

*4c.

*4d.

*4e.

*4f.

*4g.

*4h.

*4i.

*4j.

Restated Articles of Incorporation, as filed and effective May 31, 2006 and amended June 3, 2008 (incorporated
herein by reference to Exhibit 3.1 to Form 10-Q for the period ending June 30, 2008, File No. 1-15973).

Bylaws as amended May 24, 2012 (incorporated herein by reference to Exhibit 3.1 to Form 8-K dated May 24, 2012,
File No. 1-15973).

Copy of Mortgage and Deed of Trust, dated as of July 1, 1946, to Bankers Trust and R. G. Page (to whom Stanley
Burg is now successor), Trustees (incorporated herein by reference to Exhibit 7(j) in File No. 2-6494); and copies of
Supplemental Indentures Nos. 1 through 14 to the Mortgage and Deed of Trust, dated respectively, as of June 1,
1949, March 1, 1954, April 1, 1956, February 1, 1959, July 1, 1961, January 1, 1964, March 1, 1966, December 1,
1969, April 1, 1971, January 1, 1975, December 1, 1975, July 1, 1981, June 1, 1985 and November 1, 1985
(incorporated herein by reference to Exhibit 4(d) in File No. 33-1929); Supplemental Indenture No. 15 to the Mortgage
and Deed of Trust, dated as of July 1, 1986 (filed as Exhibit 4(c) in File No. 33-24168); Supplemental Indentures Nos.
16, 17 and 18 to the Mortgage and Deed of Trust, dated, respectively, as of November 1, 1988, October 1, 1989 and
July 1, 1990 (incorporated herein by reference to Exhibit 4(c) in File No. 33-40482); Supplemental Indenture No. 19 to
the Mortgage and Deed of Trust, dated as of June 1, 1991 (incorporated herein by reference to Exhibit 4(c) in File No.
33-64014); and Supplemental Indenture No. 20 to the Mortgage and Deed of Trust, dated as of June 1, 1993
(incorporated herein by reference to Exhibit 4(c) in File No. 33-53795).

Copy of Indenture, dated as of June 1, 1991, between the Company and Bankers Trust Company, Trustee, relating to
the Company’s Unsecured Medium-Term Notes (incorporated herein by reference to Exhibit 4(e) in File No.
33-64014).

Officers’ Certificate dated June 12, 1991 creating Series A of the Company’s Unsecured Medium-Term Notes
(incorporated herein by reference to Exhibit 4e. to Form 10-K for 1993, File No. 0-994).

Officers’ Certificate dated June 18, 1993 creating Series B of the Company’s Unsecured Medium-Term Notes
(incorporated herein by reference to Exhibit 4f. to Form 10-K for 1993, File No. 0-994).

Officers’ Certificate dated January 17, 2003 relating to Series B of the Company’s Unsecured Medium-Term Notes
and supplementing the Officers’ Certificate dated June 18, 1993 (incorporated herein by reference to Exhibit 4f.(1) to
Form 10-K for 2002, File No. 0-994).

Form of Secured Medium-Term Notes, Series B (incorporated herein by reference to Exhibit 4.1 to Form 8-K dated
October 4, 2004, File No. 1-15973).

Form of Unsecured Medium-Term Notes, Series B (incorporated herein by reference to Exhibit 4.2 to Form 8-K dated
October 4, 2004, File No. 1-15973).

Gill Ranch Note Purchase Agreement, dated November 30, 2011, among Gill Ranch Storage, LLC and the parties
listed thereto (incorporated herein by reference to Exhibit 4m. to Form 10-K for 2011, File No. 1-15973).

Twenty-First Supplemental Indenture, providing, among other things, for First Mortgage Bonds, 4.00% Series Due 
2042, dated as of October 15, 2012, by and between Northwest Natural Gas Company, Deutsche Bank Trust 
Company Americas (formerly known as Bankers Trust Company), and Stanley Burg (Successor to R.G. Page and 
J.C. Kennedy) (incorporated herein by reference to Exhibit 4.1 to Form 8-K dated October 26, 2012, File No.1-15973).

Form of Credit Agreement among Northwest Natural Gas Company and the parties thereto, with JPMorgan Chase 
Bank, N.A. as administrative agent and U.S. Bank, N.A. and Wells Fargo Bank, N.A. as co-syndication agents, dated 
as of December 20, 2012 (incorporated herein by reference to Exhibit 4.1 to Form 8-K dated December 20, 2012, File 
No.1-15973).

93

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4k.

Form of Letter Agreement, between each of JPMorgan Chase Bank, N.A., Bank of America, N.A., Canadian Imperial
Bank of Commerce, Royal Bank of Canada, TD Bank, N.A., Union Bank, N.A., US Bank, N.A., and Wells Fargo Bank,
N.A., with JPMorgan Chase Bank, N.A. as Administrative Agent, extending the Credit Agreement between Northwest
Natural Gas Company and each financial institutions, effective as of December 20, 2013.

*10a

Carry and Earning Agreement (incorporated herein by reference to Exhibit 10.1 to Form 10-Q for the quarter ended 
March 31, 2011, File No. 1-15973).

12

21

23

Statement re computation of ratios of earnings to fixed charges.

Subsidiaries of Northwest Natural Gas Company.

Consent of PricewaterhouseCoopers LLP.

31.1

Certification of Principal Executive Officer Pursuant to Rule 13a-14(a)/15-d-14(a), Section 302 of the Sarbanes-Oxley
Act of 2002.

31.2

Certification of Principal Financial Officer Pursuant to Rule 13a-14(a)/15-d-14(a), Section 302 of the Sarbanes-Oxley
Act of 2002.

32.1

Certification of Principal Executive Officer and Principal Financial Officer Pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002.

Executive Compensation Plans and Arrangements:

*10b.

Executive Supplemental Retirement Income Plan 2010 Restatement (incorporated herein by reference to Exhibit 10b.
to Form 10-K for 2009, File No. 1-15973).

*10c.

Supplemental Executive Retirement Plan, effective September 1, 2004 restated 2011 (incorporated herein by
reference to Exhibit 10.1 to Form 10-Q for the quarter ended September 30, 2011, File No. 1-15973).

*10d.

Northwest Natural Gas Company Supplemental Trust, effective January 1, 2005, restated as of December 15, 2005
(incorporated herein by reference to Exhibit 10.7 to Form 8-K dated December 16, 2005, File No. 1-15973).

*10e.

Northwest Natural Gas Company Umbrella Trust for Directors, effective January 1, 1991, restated as of December 15,
2005 (incorporated herein by reference to Exhibit 10.5 to Form 8-K dated December 16, 2005, File No. 1-15973).

*10f.

Northwest Natural Gas Company Umbrella Trust for Executives, effective January 1, 1988, restated as of December
15, 2005 (incorporated herein by reference to Exhibit 10.6 to Form 8-K dated December 16, 2005, File No. 1-15973).

*10g.

Restated Stock Option Plan, as amended effective December 14, 2006 (incorporated herein by reference to Exhibit
10c. to Form 10-K for 2006, File No. 1-15973).

*10h.

Form of Restated Stock Option Plan Agreement (incorporated herein by reference to Exhibit 10h. to Form 10-K for
2009, File No. 1-15973).

*10i.

Executive Deferred Compensation Plan, effective as of January 1, 1987, restated as of February 26, 2009
(incorporated herein by reference to Exhibit 10e. to Form 10-K for 2008, File No. 1-15973).

*10j.

Directors Deferred Compensation Plan, effective June 1, 1981, restated as of February 26, 2009 (incorporated herein
by reference to Exhibit 10f. to Form 10-K for 2008, File No. 1-15973).

*10k.

Deferred Compensation Plan for Directors and Executives effective January 1, 2005, restated as of January 1, 2012
(incorporated herein by reference to Exhibit 10k. to Form 10-K for 2011, File No. 1-15973).

94

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
*10l.

Form of Indemnity Agreement as entered into between the Company and each director and certain executive officers
(incorporated herein by reference to Exhibit 10l. to Form 10-K for 2009, File No. 1-15973).

*10l.(1) Form of Indemnity Agreement as entered into between the Company and certain executive officers (incorporated

herein by reference to Exhibit 10l.(1) to Form 10-K for 2009, File No. 1-15973).

*10m. Non-Employee Directors Stock Compensation Plan, as amended effective December 15, 2005 (incorporated herein

by reference to Exhibit 10.2 to Form 8-K dated December 16, 2005, File No. 1-15973).

*10n.

Executive Annual Incentive Plan, effective February 23, 2012 (incorporated herein by reference to Exhibit 10n. to
Form 10-K for 2011, File No. 1-15973).

*10o.

Form of Agreement to Recoupment Provisions of Executive Annual Incentive Plan, effective as of January 1, 2010
(incorporated herein by reference to Exhibit 10o. to Form 10-K for 2009, File No. 1-15973).

*10p.

Form of Change in Control Severance Agreement between the Company and each executive officer (incorporated
herein by reference to Exhibit 10o. to Form 10-K for 2008, File No. 1-15973).

*10q.

Severance agreement dated December 19, 2008 between the Company and Gregg S. Kantor (incorporated herein by
reference to Exhibit 10.1 to Form 8-K dated December 23, 2008, File No. 1-15973).

*10r.

Northwest Natural Gas Company Long-Term Incentive Plan, as amended and restated effective May 24, 2012
(incorporated herein by reference to Exhibit 10r to Form 10-K for 2013, File No. 1-15973)

*10s.

Form of Long-Term Incentive Award Agreement under the Long-Term Incentive Plan (2011-2013) (incorporated herein
by reference to Exhibit 10u. to Form 10-K for 2011, File No. 1-15973).

*10t.

Form of Long-Term Incentive Award Agreement under the Long-Term Incentive Plan (2012-2014) (incorporated herein
by reference to Exhibit 10v. to Form 10-K for 2011, File No. 1-15973).

*10u.

Form of Long-Term Incentive Award Agreement under the Long-Term Incentive Plan (2013-2015) (incorporated herein
by reference to Exhibit 10v. to Form 10K for 2012, File No. 1-15973).

10v.

Form of Long-Term Incentive Award Agreement under the Long-Term Incentive Plan (2014-2016).

*10w.

Form of Consent dated December 14, 2006 entered into by each executive officer (incorporated herein by reference
to Exhibit 10.1 to Form 8-K dated December 19, 2006, File No. 1-15973).

*10x.

Consent to Amendment of Deferred Compensation Plan for Directors and Executives, dated February 28, 2008
entered into by each executive officer (incorporated herein by reference to Exhibit 10bb to Form 10-K for 2007, File
No. 1-15973).

*10aa. Form of Restricted Stock Unit Award Agreement under the Long-Term Incentive Plan (2013) (incorporated herein by

reference to Exhibit 10aa. to Form 10-K for 2012, File No. 1-15978).

*10bb. Form of Restricted Stock Unit Award Agreement under the Long-Term Incentive Plan (2012) (incorporated herein by

reference to Exhibit 10.1 to Form 8-K dated December 14, 2011, File No. 1-15973).

*10cc. Form of Special Restricted Stock Unit Award Agreement under the Long-Term Incentive Plan between the Company
and an executive officer (incorporated herein by reference to Exhibit 10cc. to Form 10-Q for the period ending
September 30, 2013, File No. 1-15973)

*10dd. Annual Incentive Plan for NW Natural Gas Storage, LLC, as amended February 2, 2012 (incorporated herein by 

reference to Exhibit 10cc. to Form 10-K for 2012, File No. 1-15973).

*10ee. Long Term Incentive Plan for NW Natural Gas Storage, LLC (incorporated herein by reference to Exhibit 10dd. to 

Form 10-K for 2012, File No. 1-15973).

95

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
*10ff.

Form of Change in Control Severance Agreement between the Company and an executive officer (incorporated 
herein by reference to Exhibit 10ee. to Form 10-K for 2012, File No. 1-15973).

101.

The following materials from Northwest Natural Gas Company Annual Report on Form 10-K for the fiscal year ended 
December 31, 2013, formatted in Extensible Business Reporting Language (XBRL):

(i) Consolidated Statements of Income;
(ii) Consolidated Balance Sheets;
(iii) Consolidated Statements of Cash Flows; and
(iv) Related notes.

 *Incorporated herein by reference as indicated

96

NORTHWEST NATURAL GAS COMPANY 
Ratios of Earnings to Fixed Charges 
(Unaudited)

EXHIBIT 12

In thousands, except share data

Fixed Charges, as defined:

Interest on Long-Term Debt
Other Interest
Amortization of Debt Discount and Expense
Interest Portion of Rentals
Total Fixed Charges, as defined

Earnings, as defined:

Net Income(1)
Taxes on Income(1)
Fixed Charges, as above
Total Earnings, as defined

Ratios of Earnings to Fixed Charges

Year Ended December 31,

2013

2012

2011

2010

2009

$

$

40,825
2,709
1,877
1,910
47,321

$

39,175
2,314
1,848
1,864
45,201

$

37,515
2,976
1,729
2,213
44,433

$

39,198
1,587
1,766
2,130
44,681

37,447
1,937
1,503
1,735
42,622

60,538
41,705
47,321
$ 149,564
3.16

58,779
43,403
45,201
$ 147,383
3.26

63,044
42,825
44,433
$ 150,302
3.38

72,013
49,033
44,681
$ 165,727
3.71

74,632
46,349
42,622
$ 163,603
3.84

(1) Prior period balances have been adjusted for a prior period error identified during the first quarter of 2013. See Note 16 for additional detail 
on this error.

97

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

EXHIBIT 23

We hereby consent to the incorporation by reference in the Registration Statement on Form 
333-120955, 333-134973, 333-139819, 333-180350 and 333-187005) and in the Registration Statement on Form S-3 (No. 
333-192641) of Northwest Natural Gas Company of our report dated February 28, 2014 relating to the consolidated financial 
statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this 
Form 

(Nos. 333-70218, 333-100885, 

10-K.

S-8

/s/ PricewaterhouseCoopers LLP

Portland, Oregon
February 28, 2014 

98

 
CERTIFICATION

I, Gregg S. Kantor, certify that:

EXHIBIT 31.1

1.           I have reviewed this annual report on Form 10-K of Northwest Natural Gas Company;

2.           Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

3.           Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods 
presented in this report;

4.           The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined 
in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under 
our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made 
known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed 
under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of 
financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our 
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report 
based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the 
registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially 
affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.           The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons 
performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting 
which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial 
information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the 
registrant’s internal control over financial reporting.

Date:          February 28, 2014 

/s/ Gregg S. Kantor                                                   
Gregg S. Kantor
President and Chief Executive Officer

99

CERTIFICATION

I, Stephen P. Feltz, certify that:

EXHIBIT 31.2

1.           I have reviewed this annual report on Form 10-K for Northwest Natural Gas Company;

2.           Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

3.           Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods 
presented in this report;

4.           The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined 
in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under 
our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made 
known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed 
under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of 
financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our 
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report 
based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the 
registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially 
affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.           The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over 
financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons 
performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting 
which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial 
information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the 
registrant’s internal control over financial reporting.

Date:          February 28, 2014 

/s/ Stephen P. Feltz                                                                
Stephen P. Feltz
Senior Vice President and Chief Financial Officer

100

NORTHWEST NATURAL GAS COMPANY
Certificate Pursuant to Section 906
of Sarbanes – Oxley Act of 2002

EXHIBIT 32.1

Each of the undersigned, GREGG S. KANTOR, the President and Chief Executive Officer, and STEPHEN P. FELTZ, the Senior 
Vice President and Chief Financial Officer, of NORTHWEST NATURAL GAS COMPANY (the Company), DOES HEREBY 
CERTIFY that:

1.           The Company’s Annual Report on Form 10-K for the year ended December 31, 2013 (the Report) fully complies with 
the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2.           Information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

IN WITNESS WHEREOF, each of the undersigned has caused this instrument to be executed this 28th day of 

February 2014.

/s/ Gregg S. Kantor                                                      
Gregg S. Kantor
President and Chief Executive Officer

/s/ Stephen P. Feltz                                                         
Stephen P. Feltz
Senior Vice President and
Chief Financial Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to 
Northwest Natural Gas Company and will be retained by Northwest Natural Gas Company and furnished to the Securities and 
Exchange Commission or its staff upon request.

101

 
 
 
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[THIS PAGE INTENTIONALLY LEFT BLANK]

INVESTOR AND SHAREHOLDER INFORMATION

CORPORATE INFORMATION

Robert Hess

Director, Investor Relations

(800) 422-4012, Ext. 2388 

rsh@nwnatural.com

Chu Lee

Manager, Shareholder Services 

(800) 422-4012, Ext. 2402 

c4l@nwnatural.com

Stock transfer agent and registrar 

Community and Sustainability Report 

For common stock:

Learn more about NW Natural’s community involvement and 

American Stock Transfer & Trust Company

philanthropic contributions, environmental stewardship,  

6201 15th Avenue

Brooklyn, NY 11219

(888) 777-0321

web: amstock.com

email: info@amstock.com

Trustee and bond paying agent 

For all bond issues:

Deutsche Bank Trust Company Americas

60 Wall Street

New York, NY 10005

(800) 735-7777

employee safety efforts and other company initiatives. 

View the Community & Sustainability Annual Report at  

nwnatural.com/aboutnwnatural/community.

Low-Income Weatherization Program 

NW Natural offers a program to our low-income customers 

designed to reduce their natural gas use through the installation 

of energy-efficient equipment and weatherization measures. 

Find out more about this innovative Oregon program. 

View the Low-Income Energy-Efficiency Program Annual Report 

at nwnatural.com/aboutnwnatural/environmentalstewardship.

Energy-Efficiency Programs 

NW Natural partners with Energy Trust of Oregon to offer  

our Oregon and Washington customers energy-efficiency  

programs and services. Learn more about the results of  

these programs and the benefits to our customers. 

View the Energy Trust of Oregon Annual Report at nwnatural.

com/aboutnwnatural/environmentalstewardship.

220 NW SECOND AVENUE
PORTLAND, OREGON 97209
NWNATURAL.COM
NYSE: NWN