Quarterlytics / Utilities / Regulated Electric / Idacorp / FY2015 Annual Report

Idacorp
Annual Report 2015

IDA · NYSE Utilities
Claim this profile
Ticker IDA
Exchange NYSE
Sector Utilities
Industry Regulated Electric
Employees 1001-5000
← All annual reports
FY2015 Annual Report · Idacorp
Loading PDF…
a   c e n t u r y   o f   s e r v i c e

2015

annual report

2

0

1

5

I

D

A

C

O

R

P

A

N

N

U

A

L

R

E

P

O

R

T

 
 
 
To Our Fellow Shareholders
To Our Fellow Shareholders
Continuing the Legacy
Continuing the Legacy

We are proud to report that 2015 was another 
fi nancially and operationally strong year for 
IDACORP and its primary subsidiary, Idaho 
Power. The year closed a chapter on our fi rst 
century of business. As we look back at the 
strong foundation that ensured the success and 
longevity of the company, we also look forward 
to the challenges and opportunities that the 
next chapter provides as we continue on as an 
independent, integrated electric utility.

2015 marked IDACORP’s eighth consecutive year 
of improved earnings. Idaho Power will share 
approximately $3 million with Idaho customers 
under our regulatory stipulation. This continued 
a trend of several years of sharing with customers, 
amounting to more than $120 million in total.

Looking back, the successes of 2015 are 
attributable to the execution of our business 
strategy and our focus on our clean, low-cost 
hydroelectric base, constructive regulatory 
activities, growth in customers and economic 
activity in Idaho Power’s service area. 

Looking ahead, Idaho Power estimates total 
capital expenditures of nearly $1.5 billion over 
the next fi ve years. Noteworthy projects include 
the replacement of aging assets, upgrades 
to generation plants, a multi-year plan for 

R
o
b
e
r
t
A

.

T
i
n
s
t
m
a
n

D
a
r
r
e
l

A
n
d
e
r
s
o
n

2
0
1
5
H
I
G
H
L
I
G
H
T
S

Dollar Amounts in Thousands, Except Per Share Amounts 

2015 

2014         % Change

Total Operating Revenues 

IDACORP Net Income 

Earnings Per Diluted Common Share 

Dividends Declared Per Common Share 

Total Assets 

Number of Employees (full-time) 

$1,270,289 

$1,282,524 

$194,679 

$193,480 

$3.87 

$1.92 

$3.85 

$1.76 

$6,023,314 

$5,701,037 

2,002 

2,021 

-1.0

0.6

0.5

9.1

5.7

-0.9

replacement of underground cable, ongoing system upgrades and continued progress on permitting  
the Boardman to Hemingway and Gateway West 500-kilovolt transmission projects. 

Our 17 hydroelectric dams on the Snake River and its tributaries are the crown jewels of our system. As recently 
highlighted in United Airlines’ Hemispheres magazine, “We were green before green was the thing to be.” Our 
hydro facilities are our legacy, providing a clean, reliable, flexible system at a low cost for our customers. These 
plants, together with three natural gas plants and three coal plants, all play important roles in providing 
electricity to our customers. Even removing the capacity generated by the 17 hydro plants we operate on  
the Snake River and its tributaries, 20.1 percent of the actual nameplate capacity on Idaho Power’s  
system consisted of renewables in 2015. 

A prudent regulatory strategy is another key to our success. We work collaboratively to help ensure timely cost 
recovery while keeping customer rates fair. We also are careful to approach other regulatory issues, such as 
renewable energy, in a thoughtful, strategic manner for the benefit of our shareholders and customers. 

Idaho Power’s century-old roots continue to grow in Idaho. To this day, electricity that is affordable and readily 
available is a major factor in our region’s long-term economic growth. Our reliable and fair-priced energy is  
a key reason large companies like Chobani, Clif Bar and Amy’s Kitchen have chosen to site facilities in  
— and bring jobs to — Idaho Power’s service area. 

You can’t have power without people, and Idaho Power works to maximize our human resources. We embrace 
succession planning at all levels, resulting in a talented bench from which to choose our future leaders. Our 
leadership team has broad management experience and is skilled at controlling costs, optimizing our system  
and growing revenues. Our Board of Directors has the diverse collective background for successful oversight  
of policies, providing thoughtful and valuable counsel. 

Idaho Power also continues to receive national media recognition for corporate excellence. In the September issue 
of Public Utilities Fortnightly, our company ranked number 11 of investor-owned utilities in the publication’s list 
of the 40 best energy companies. That’s up from 17th in the prior year and a substantial jump for the fourth year 
in a row. The Fortnightly 40 measures utilities’ long-term performance and ranks them according to operating 
efficiency, asset utilization and financial leverage.

Enhancing shareholder value is top-of-mind for IDACORP. On September 17, our Board of Directors approved an  
8.5 percent increase in the regular quarterly cash dividend on IDACORP’s common stock, from $0.47 per share  
to $0.51 per share. IDACORP’s Board of Directors has approved dividend increases in each of the last four years,  
representing a cumulative increase of 70 percent in IDACORP’s quarterly dividend over that period. 

Like any company that has been around for a century, Idaho Power has accomplished a lot. We’ve grown and 
adapted to many changes. We continue to find ways to optimize, help grow our local economy and embrace  
new opportunities. It’s an exciting time to be in the energy business. We look forward to building on the  
strong foundation of the past 100 years as we work to produce long-term value for you, our shareowners.

Chairman of the Board

President and Chief Executive 

A Century of Service
A Century of Service

ildi n
ildi n

u
u
B
B

g  the F
g  the F

Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S

u
u

t
t

u
u

r
r
e
e

Idaho Power begins its second century with great opportunities. 
Idaho Power begins its second century with great opportunities. 
The company has the resources to deliver electricity to homes 
The company has the resources to deliver electricity to homes 
and businesses throughout its service area for the next decade, 
and businesses throughout its service area for the next decade, 
and we’re already planning for 2025 and beyond.
and we’re already planning for 2025 and beyond.

P o w e r ing Generations
P o w e r ing Generations

6
6

1
1

9
9

1
1

2016
2016

1

 
 
 
 
POWERING GENERATIONS

In 2016, we celebrate 100 years of service. Idaho 

Power was founded in 1916 when five companies 

combined. The new company harnessed the 

Snake River for hydroelectric power. We take 

pride in adoption of technology, care for natural 

resources and the relationships we have built 

with communities. The company’s core values 

are integrity, safety and respect.

Our path to the centennial included hardships. 

We adapted and persevered to balance the 

interests of shareholders, customers and 

employees. We thank our employees for the 

company’s success. Their dedication and 

commitment makes this celebration possible. 

In the 1920s, Idaho Power’s mobile crews visited farms and ranches and 

set pole after pole in places far away from the company’s headquarters in 

Boise. By late that decade Idaho Power had 10,000 rural customers and 

had constructed more than 1,100 miles of rural transmission lines. 

But it took until the late 20th century to accomplish Idaho Power’s 

ambitious goal of reaching every household in its service area.

2

3

BUILDING POWER

In 1916, the company began with nine hydroelectric plants. Idaho Power spent the 
next 15 years investing in construction and growth projects to improve generating 
capacity and facilities from Pocatello in the east to Swan Falls in the west. Through 
these projects, the company formed close business partnerships with local industries, 
including mining, agriculture and manufacturing. These partnerships would last 
throughout the next 100 years.

As its facilities grew, Idaho Power’s sales team presented the benefits of electricity to 
households in its service area by selling modern electric appliances directly to 
customers. Salesmen sold items like clothes washers, waffle irons and cooking ranges. 
These appliances promised Idaho housewives a new way of life. To serve the customers 
who bought these wares, the company started its rural electrification program. 
The program’s goal was to bring power to even the most remote customers and make 
Idaho Power well-known in cities, towns, farms and ranches across its service area.

4

In 1916, Idaho Power’s facilities generated only 

20,340 kilowatts (kW) and served only 18,000 

customers. But demand for electricity grew 

dramatically. To keep pace, the company 

upgraded its existing facilities and built several 

new ones. Using the power of the Snake River’s 

many natural waterfalls was the key 

to the company’s future.

5

MAKING THE 
DESERT BLOOM

The Great Depression took Idaho Power and its customers on a bumpy ride. Idaho 
Power focused on balancing the needs of customers, employees and shareholders 
through dramatic changes. The company’s biggest problem was finding ways 
to keep growing to meet electricity demand, which continued to increase 
in spite of hard times. 

New dams and better transmission lines were the focus of plans for reliable generation, 
but the economic conditions and legal changes of the 1930s stalled much of the work. 
For example, the Public Utility Holding Company Act of 1935 required Idaho Power 
to combine its service area into a cohesive geographic area. The decade had many 
silver linings — improvements to safety, an 8-hour work day and Idaho Power’s 
pledge that it would be run by “the same local people, representing the territory 
served,” and provide “the greatest possible 
service at the lowest possible cost, 
consistent with good service.”

6

7

HELLS CANYON

Idaho Power President Thomas Roach (r) 

and Morrison-Knudsen President Harry 

Morrison were instrumental in the 

building of the Hells Canyon Complex, 

which comprises three dams: Brownlee, 

Oxbow and Hells Canyon.

8

The 1960s began with Idaho Power adding the last two dams it would build on the 

Snake River — Oxbow and Hells Canyon. The Hells Canyon Complex exceeded existing 

demand because it was designed to meet the immediate energy demands of Cold War 

industry along with future needs. Once again, the company had to boost customer 

use. Idaho Power balanced these needs successfully. Increased pump irrigation, new 

manufacturing and new advances, such as air conditioning, pushed the company’s 

overall energy sales from 1 billion to 6 billion kilowatt-hours between 1950 and 1966. 

During this era, Idaho Power also partnered with neighboring electric utilities to link 

several states through the construction of massive transmission lines.

This decade was a key moment in American history. Americans wanted the cheap 

power that made their lives easier. They also wanted Idaho Power to care for the 

land and rivers. To support this value of environmental responsibility, the federal 

government required Idaho Power to explore programs to reduce fish losses 

caused, in part, by its dams. Idaho Power’s Environmental department 

expanded as it launched programs to achieve this goal. 

After construction on Oxbow ended in 

1961, Idaho Power’s focus turned to its 

flagship dam, Hells Canyon. Everything 

about Hells Canyon was dramatic:

• Its size

• The number of workers who built it

• The amount of electricity it generated

• Its cost

9

ESSENTIAL SERVICES

IDACORP entered the 21st century with a bold mission to transition into an “essential 
services” company while remaining true to its commitment to responsibly provide 
reliable, affordable electricity for its growing number of customers. The strategy moved 
the company into broadband, financial services and energy marketing. The goal was to 
meet growing customer needs while diversifying the company’s sources of income and 
bolstering shareholder revenue. The Western energy crisis of 2000 to 2001 prompted 
the company to re-evaluate this strategy. The result was a return to its core business, 
Idaho Power, and a renewed focus on present and future energy needs. 

During the crisis, electrical systems across the West experienced brownouts 
and blackouts during periods of peak energy demand. Idaho Power avoided those 
shortages, and when the energy markets settled down, IDACORP decided to return 
to its roots with an “Electricity Plus” theme. This back-to-basics approach has paid 
dividends by helping develop a deeper understanding of what Idaho Power has 
provided for 100 years: reliable electricity, excellent customer service and community 
outreach. We are committed to safety, service and a vibrant corporate culture.

10

11

A Legacy of Financial Strength

IDACORP’s focus remains on our clearly defined 
business strategy that positions us to deliver sound 
financial results. IDACORP general business revenue 
increased $28.8 million in 2015 compared with 
2014. Annual earnings per share have grown  
over the last eight years. 

Idaho Power recorded no additional amortization 
of accumulated deferred investment tax credits, 
or ADITCs, in 2015 under the Idaho regulatory 
settlement stipulation, leaving $45 million of 
additional ADITCs available for future use.

Dividend Growth
During 2015 IDACORP continued to make significant 
progress toward its target dividend payout ratio of 
between 50 and 60 percent of sustainable IDACORP 
earnings, which expands on progress made in 
previous years. From 2012 through 2016,  
IDACORP’s Board of Directors has approved a 
collective 70 percent increase in the quarterly 
dividend, from $0.30 to $0.51 per share.

Period Ending December 31

IDACORP, Inc.

S&P 500 Index

EEI Electric 
Utilities Index

$220

$200

$180

$160

$140

$120

$100

2011

2010
2015
Comparison of Cumulative Total Return

2014

2013

2012

10.4%

9.9%

9.9%

9.9%

2012

2011
Return on Year-End Equity

2013

2014

9.5%

2015

$1.32
Q1

$1.52
Q4

$1.72
Q4

$1.88
Q4

2012

2012
2014
Annualized Dividend Per Share

2013

$2.04
Q4

2015

$3.43

$3.46

$3.64

$3.85

2012

2011
Diluted Earnings Per Share

2013

2014

$3.87

2015

$32.76

$34.73

$36.84

$38.85

$40.88

2011
2012
2013
Book Value Per Share

2014

2015

Idaho Power partnered with appliance dealers who aimed to sell 

popular machines like washers and “hoovers.” The company’s sales 

team focused on increasing demand for new appliances and turning 

low-use customers into high-use consumers. The efforts worked. 

Idaho Power President Thomas 

Roach (r) and Morrison-Knudsen 

President Harry Morrison signing 

the Brownlee and Oxbow  

construction contract in 1955.

12

13

A Legacy of Responsible Resources 

and Planning

Generation Resources
Idaho Power’s system is heavily weighted toward clean, 
renewable generation. The company began in 1916 as a 
solely hydro-based utility, and a century later, this resource 
remains the key to keeping our customers’ electricity 
among the lowest-cost and cleanest in the country. The 17 
hydroelectric projects on the Snake River and its tributaries 
are our least-cost generation resource, and provide about 
half of the electricity we deliver to customers  
in a normal water year. 

At the three coal plants Idaho Power co-owns, generation 
decreased while natural gas-fired generation increased; low 
regional natural gas prices made running the company’s 
three natural gas-fired plants more economical in 2015, 
further reducing our carbon footprint.

2015 Resource Portfolio Fuel Mix*

B
i
o

O

t

h

m

e

r

a

s

s

2

.

2

0
.
6

2

%

Other*
Purchases
7.52%

4

%

Wind  9.59%

Hydro  1.54%
Geothermal  1.53%

Natural Gas
12.62%

Hydroelectric
35.92%

Coal
 28.43%

*Because Idaho Power sells (or does not own) the renewable energy certificates or  
“green tags” associated with certain projects in its resource portfolio, using the proceeds 
to benefit customers, we are not permitted to say the electricity from those projects is 
delivered to customers.

Renewable Energy and PURPA
In August, the Idaho Public Utilities Commission granted 
Idaho Power’s request to reduce the length of new PURPA 
energy sales agreements from 20 years to two years. Idaho 
Power argued that the continued creation of 20-year term 
contracts placed undue risk on customers at a time when 
the company has sufficient resources to meet customer 
needs. The cost of existing long-term wind and solar  
energy contracts already runs into the billions of dollars. 

As of Feb. 18, 2016, Idaho Power had 320 megawatts 
nameplate of solar capacity under contract and scheduled 
to begin production in 2016. If all of those solar resources 
come online, the percentage of hydro, wind, solar and other 
renewable generation capacity on Idaho Power’s system 
would be greater than 60 percent of the total capacity  
by the end of this year.

Emissions Reductions 
Idaho Power’s thermal energy resources are among the 
nation’s cleanest and getting cleaner. The company recently 
extended its commitment to further the reduction of carbon 
dioxide emissions intensity from its fleet.

The company has committed to reducing its average 
emissions intensity to 15 to 20 percent below 2005 levels 
for the 2010 to 2017 timeframe. Idaho Power achieved 
its goal to reduce average CO2 emissions intensity by 10 
to 15 percent below 2005 emissions for the period from 
2010 through 2015, reducing emissions intensity by 
approximately 21 percent.

500-kilovolt Transmission Investments
The 300-mile Boardman to Hemingway 500-kilovolt (kV) 
transmission line was included in the preferred resource 
portfolio in Idaho Power’s 2015 Integrated Resource Plan. 
Idaho Power expects the Bureau of Land Management (BLM) 
to issue a final Environmental Impact Statement (EIS) 
during 2016, and a Record of Decision  
in late 2016 or early 2017. 

In the separate Oregon state permitting process,  
Idaho Power intends to finalize its amended preliminary 
application for a site certificate in 2016. Given the status  
of ongoing permitting activities, the in-service date  
for the line is expected to be in 2022 or beyond.

Gateway West is a 500-kV, 1,100-mile transmission  
project jointly proposed by Idaho Power and PacifiCorp. 

In its November 2013 record of decision, the BLM identified 
final routing of eight of 10 segments of the project and 
deferred a decision on two segments to resolve routing 
concerns in those areas.

The BLM has initiated the supplemental EIS process for the 
two deferred segments, and that document is expected in 
spring 2016. The agency is expected to issue a record of 
decision on those segments later in 2016.

Technological advances in the utility industry were 

another sign of modern times. These advances changed 

the way Idaho Power conducted business. Idaho Power 

installed self-regulating transformers and began 

using cranes to load poles in the 1940s.

14

15

Long Term Purchases* 
 
  
A Legacy of Thoughtful 

Regulatory Actions

& Fostering Growth

To address the volatility of power supply costs, Idaho 
Power’s Power Cost Adjustment (PCA) mechanisms in the 
Idaho and Oregon jurisdictions allow Idaho Power to recover 
from or refund to customers most of the fluctuations in 
power supply costs. In May 2015, the IPUC approved a 
settlement stipulation intended to improve the accuracy  
of the PCA by replacing the existing load-based adjustment 
used for determining power cost deferrals with a similar 
sales-based adjustment.

Idaho Power remains focused on advancing a purposeful 
regulatory strategy. The company has focused on timely 
recovery of costs through filings with the company’s 
regulators, innovative regulatory mechanisms, and prudent 
management of expenses and investments. Idaho Power has 
a regulatory settlement stipulation in Idaho that remains in 
effect through 2019. That stipulation includes provisions  
for the accelerated amortization of ADITCs to help achieve  
a minimum 9.5 percent return on year-end equity  
in the Idaho jurisdiction. 

Idaho Power’s base rates were most recently reset in 2012. 
During 2016 Idaho Power will evaluate the timing of filing 
an application for a general rate change in Idaho or Oregon.

Regulatory Mechanisms
The Fixed Cost Adjustment (FCA) is designed to remove 
Idaho Power’s financial disincentive to invest in energy 
efficiency programs by separating the recovery of fixed  
costs from the variable kilowatt-hour charge. In May 2015, 
the IPUC approved a settlement stipulation that modified 
the FCA mechanism by replacing weather-normalized 
sales with actual sales. The FCA mechanism modification, 
combined with lower sales per customer due to energy 
efficiency measures, provided a $12.7 million benefit to 
operating income in 2015 compared with 2014.

Idaho Power has been pursuing significant enhancements to 
its utility infrastructure in an effort to ensure an adequate 
supply of electricity, to provide service to new customers 
and to maintain system reliability.

Customer Growth
In recent years, Idaho Power has seen growth in the number 
of customers in its service area, and the company expects 
that number to continue to increase in the foreseeable 
future. There was a 1.8 percent increase in customers  
in Idaho Power’s service area from 2014 to 2015. 

To help encourage that continued growth and highlight  
the company’s service area, Idaho Power has in recent  
years launched efforts to promote business development  
and attract industrial and commercial customers  
to the service area.

Business Development Activity 
Electricity that is affordable and available has been one 
of the major reasons for the region’s long-term economic 
growth. National companies Chobani, Clif Bar and Amy’s 
Kitchen are three recent customers to locate or expand 
operations in south central Idaho, and we are  
seeing others inquire often.

496

501

508

516

2012

2011
General Business Customers
(at Dec. 31, 2015) Thousands

2013

2014

2,973

3,245

3,407

3,184

2012

2011
Idaho Power System Peaks
in Megawatts

2013

2014

525

2015

3,402

2015

16

17

A Legacy of Service

& Worth Your Investment

100 Years of Service
Idaho Power prides itself on the reliability of the electrical 
service we provide. But sometimes Mother Nature throws a 
very challenging situation our way. A range fire in August 
and a major snow storm in December showed our employees 
are at their very best when conditions are the worst.

During these two events Idaho Power restored power to 
thousands of people and replaced hundreds of poles and 
miles and miles of line. From the crews to the many folks 
behind the scenes, we were highly prepared and tightly 
coordinated when working to get power back  
on to our customers.

This kind of orchestrated effort, and the day-to-day of 
running our business, would not be possible without our 
dedicated employees, the more than 2,000 men and women 
who live the company’s core values of integrity, safety and 
respect. It’s the engaged and dedicated employees in all 
fields who are the backbone of Idaho Power’s success. 

For a hundred years Idaho Power has provided reliable, 
responsible, fair-priced energy services to our customers.  
It is our legacy. As we look back at the strong foundation 
that ensured the success and longevity of the company,  
we also look forward to the beginning of our next chapter 
as an independent, integrated electric utility. 

So what does that next chapter look like? It’s keeping top-
line revenue growth top-of-mind, along with optimization 
in all areas of the company, from identifying cost-saving 
measures to careful succession planning. It’s continuing 
to keep a close eye on the horizon so we are prepared to 
embrace opportunities and successfully face any challenge. 
It’s maintaining our unwavering commitment to our 
customers, employees and owners.

As the next chapter begins, we acknowledge the more than 
2,000 safe, engaged and dedicated employees in all fields 
who continually contribute to the company’s success.  
And we share our appreciation for you, our shareholders.  
We value your confidence in IDACORP and will continue  
working to make our company worthy of your investment 
now and in the future.

18

19

IDACORP and Idaho Power
Board of Directors

(as of February 18, 2016)

Robert A. Tinstman*
(1999) Boise, Idaho
Director, Primoris Services Corp.; Home Federal Bancorp, 
Inc.; former Director of CNA Surety Corp.; and former 
President and Chief Executive Officer of  
Morrison-Knudsen Corporation.

Darrel T. Anderson
(2013) Boise, Idaho
President and Chief Executive Officer of IDACORP, Inc.  
and Idaho Power.

Thomas E. Carlile 
(2014) Boise, Idaho  
Former Chief Executive Officer of Boise Cascade Company; 
Director of Boise Cascade Company.

Richard J. Dahl
(2008) Kailua, Hawaii
Chairman of the Board, President and Chief Executive 
Officer of James Campbell Company, LLC; Director, 
DineEquity, Inc.; and former President and  
Chief Operating Officer of Dole Food Company. 

Ronald W. Jibson
(2013) North Salt Lake, Utah
President, Chief Executive Officer and Director, Questar 
Corporation; President and Chief Executive Officer of 
Wexpro Corporation; and President and Chief Executive 
Officer of Questar Gas Company; Director and Chairman  
of the Board of Questar Pipeline Company.

Judith A. Johansen
(2007) Scottsdale, Arizona
Director, Pacific Continental Corp., Pacific Continental 
Bank, Schnitzer Steel and Roseburg Forest Products; 
former President of Marylhurst University; former 
President and Chief Executive Officer of PacifiCorp;  
and former Chief Executive Officer and Administrator  
of the Bonneville Power Administration.

Dennis L. Johnson
(2013) Eagle, Idaho
President, Chief Executive Officer and Director of United 
Heritage Mutual Holding Company, United Heritage 
Financial Group, and United Heritage Life Insurance 
Company; Director of Cascade Bancorp.

J. LaMont Keen
(2004) Boise, Idaho
Former President and Chief Executive Officer,  
IDACORP, Inc. and Idaho Power Company;  
Director of Cascade Bancorp.

Christine King 
(2006) Scottsdale, Arizona 
Director and Executive Chair of QLogic Corp., Director  
of Cirrus Logic, Inc. and Skyworks Solutions, Inc.; former 
Director of Atheros Communications, Inc., Open-Silicon, 
Inc., and Standard Microsystems Corporation; former 
President and Chief Executive Officer of Standard 
Microsystems Corporation; and former President  
and Chief Executive Officer of AMI Semiconductor.

Richard J. Navarro
(2015) Boise, Idaho
Former Chief Financial Officer of Albertson’s, LLC; former 
Senior Vice President and Controller at Albertson’s, Inc.; 
former director of TitleOne Corporation and the  
Boise State University Foundation.

 (  )  year appointed or elected to the board
  *  Chairman of the Board

IDACORP and Idaho Power Officers

Idaho Power
Lisa A. Grow (28) 
Senior Vice President, Operations

Jeffrey Glenn (Less than one year) 
Vice President of Information Technology

Lonnie Krawl (10) 
Senior Vice President of Administrative Services  
and Chief Information Officer

Tessia Park (18) 
Vice President of Power Supply

N. Vern Porter (26) 
Vice President of Customer Operations

Gregory W. Said (35 – Retiring May 1, 2016) 
Vice President, Regulatory Affairs

( ) Years of Service 

(as of February 18, 2016)

IDACORP and Idaho Power
Darrel T. Anderson (20) 
President and Chief Executive Officer,  
IDACORP, Inc. and Idaho Power 

Rex Blackburn (8) 
Senior Vice President and General Counsel,  
IDACORP, Inc. and Idaho Power 

Patrick A. Harrington (30) 
Corporate Secretary, IDACORP, Inc.  
and Idaho Power 

Steven R. Keen (33) 
Senior Vice President, Chief Financial Officer  
and Treasurer, IDACORP, Inc. and Idaho Power 

Jeffrey Malmen (8) 
Vice President, Public Affairs, IDACORP, Inc.  
and Idaho Power 

Daniel B. Minor (30) 
Executive Vice President, IDACORP, Inc. 
and Idaho Power

Ken W. Petersen (17) 
Vice President, Controller and  
Chief Accounting Officer, IDACORP, Inc.  
and Idaho Power 

Lori D. Smith (32 – Retiring March 31, 2016) 
Vice President and Chief Risk Officer,  
IDACORP, Inc. and Idaho Power

20

D
a
r
r
e
l

A
n
d
e
r
s
o
n

D
a
n
M
i
n
o
r

21

 
 
 
 
 
 
 
 
 
 
Hydroelectric Facilities
1  Hells Canyon 

391,500 kW

14  Shoshone Falls 

12,500 kW

2  Oxbow 

190,000 kW

15  Twin Falls 

52,897 kW

3  Brownlee 

585,400 kW

16  Milner 

59,448 kW

4  Cascade 

12,420 kW

17  American Falls 

92,340 kW

Thermal Facilities

5  Swan Falls 

27,170 kW

6  C.J. Strike 

82,800 kW

7  Bliss 

75,000 kW

8  Lower Malad 

13,500 kW

9  Upper Malad 

8,270 kW

10  Lower Salmon 

60,000 kW

11  Upper Salmon 

34,500 kW

12  Thousand Springs  8,800 kW

13  Clear Lake 

2,500 kW

22

18 Jim Bridger 770,501 kW119 North Valmy 283,500 kW120 Boardman 64,200 kW121 Evander Andrews 270,900 kW222 Bennett Mountain 172,800 kW23 Salmon Diesel 5,000 kW24 Langley Gulch 318,452 kW123456789101112131415161723242221201918Generation Facilities & Nameplate Capacities1 Idaho Power share 2 Danskin(Mark One)

X

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

FORM 10-K

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

For the fiscal year ended December 31, 2015

OR

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

For the transition period from ................... to .................................................................

Exact name of registrants as specified in

their charters, address of principal executive

IRS Employer

Commission

File Number
1-14465
1-3198

offices, zip code and telephone number
IDACORP, Inc.
Idaho Power Company
1221 W. Idaho Street
Boise, ID 83702-5627
(208) 388-2200

State of incorporation:  Idaho

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
IDACORP, Inc.:  Common Stock, without par value

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

Idaho Power Company:  Preferred Stock

Identification Number
82-0505802
82-0130980

Name of exchange on

which registered
New York
Stock Exchange

Indicate by check mark whether the registrants are well-known seasoned issuers, as defined in Rule 405 of the Securities Act.

IDACORP, Inc.

Yes

(X)

No

(  )

Idaho Power Company

Yes

(  )

No

(X)

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

IDACORP, Inc.

Yes

(  )

No

(X)

Idaho Power Company

Yes

(  )

No

(X)

Indicate by check mark whether the registrants (1) have 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 registrants were required to 
file such reports), and (2) have been subject to such filing requirements for the past 90 days.  Yes  (X)  No  (  )

1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indicate by check mark whether the registrants have submitted electronically and posted on their corporate Web sites, if any, 
every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 
months (or for such shorter period that the registrants were required to submit and post such files).  

IDACORP, Inc.

Yes

(X)

No

(  )

Idaho Power Company

Yes

(X)

No

(  )

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and 
will not be contained, to the best of registrants’ 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 registrants are large accelerated filers, accelerated filers, non-accelerated filers, or smaller 
reporting companies.

IDACORP, Inc.:

Large accelerated filer

(X)

Accelerated filer

(  ) Non-accelerated filer

(  )

Smaller reporting company (  )

Idaho Power Company:

Large accelerated filer

(  )

Accelerated filer

(  ) Non-accelerated filer

(X) Smaller reporting company (  )

Indicate by check mark whether the registrants are shell companies (as defined in Rule 12b-2 of the Act).

IDACORP, Inc.

Yes

(  )

No

(X)

Idaho Power Company

Yes

(  )

No

(X)

Aggregate market value of voting and non-voting common stock held by non-affiliates (June 30, 2015):

IDACORP, Inc.:

$

2,798,093,674

Idaho Power Company:

None

Number of shares of common stock outstanding as of February 12, 2016:
50,297,581
IDACORP, Inc.:
39,150,812, all held by IDACORP, Inc.
Idaho Power Company:

Documents Incorporated by Reference:

Part III, Items 10 - 14

Portions of IDACORP, Inc.’s definitive proxy statement to be filed pursuant to Regulation 14A for
the 2016 annual meeting of shareholders.

This combined Form 10-K represents separate filings by IDACORP, Inc. and Idaho Power Company.  Information contained 
herein relating to an individual registrant is filed by that registrant on its own behalf.  Idaho Power Company makes no 
representation as to the information relating to IDACORP, Inc.’s other operations.

Idaho Power Company meets the conditions set forth in General Instruction (I)(1)(a) and (b) of Form 10-K and is therefore 
filing this Form with the reduced disclosure format.

2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TABLE OF CONTENTS

Commonly Used Terms
Cautionary Note Regarding Forward-Looking Statements

Part I

Item 1

Item 1A
Item 1B
Item 2
Item 3
Item 4

Part II

Business
Executive Officers of the Registrants
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Mine Safety Disclosures

Item 5

Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity

Securities

Selected Financial Data
Management's Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosures About Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information

Directors, Executive Officers and Corporate Governance*
Executive Compensation*
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters*
Certain Relationships and Related Transactions, and Director Independence*
Principal Accountant Fees and Services*

Item 6
Item 7
Item 7A
Item 8
Item 9
Item 9A
Item 9B

Part III

Item 10
Item 11
Item 12
Item 13
Item 14

Part IV

Item 15

Exhibits and Financial Statement Schedules

Signatures

Page

4
5

7
18
19
27
27
29
29

29
31
32
69
71
125
125
129

129
129
129
130
130

131

142

* Except as indicated in Items 10, 12, and 14, IDACORP, Inc. information is incorporated by reference to IDACORP, Inc.'s
definitive proxy statement for the 2016 annual meeting of shareholders.

3

 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following select abbreviations, terms, or acronyms are commonly used or found in multiple locations in this report:

COMMONLY USED TERMS

ADITC

- Accumulated Deferred Investment Tax

Credits

AFUDC

- Allowance for Funds Used During

Construction

- Annual Power Cost Update

IRP

IRS

kW

- Integrated Resource Plan

- U.S. Internal Revenue Service

- Kilowatt

- Bridger Coal Company, a joint venture of

MATS

- Mercury and Air Toxics Standards

IERCo

BLM

- U.S. Bureau of Land Management

MD&A

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

- Bonneville Power Administration

- Clean Air Act

- Carbon Dioxide

- Clean Water Act
- Electric Utility Generating Units

- Environmental Impact Statement

MW

MWh

- Megawatt

- Megawatt-hour

NAAQS

- National Ambient Air Quality Standards

NMFS
NOx

NSPS

- National Marine Fisheries Service
- Nitrogen Oxide

- New Source Performance Standards

- U.S. Environmental Protection Agency

NSR/PSD - New Source Review / Prevention of

- Earnings Per Share

- Endangered Species Act

- Fixed Cost Adjustment

- Federal Energy Regulatory Commission

O&M

OATT

OPUC

PCA

Significant Deterioration

- Operations and Maintenance

- Open Access Transmission Tariff

- Public Utility Commission of Oregon

- Power Cost Adjustment

- Federal Power Act

PCAM

- Oregon Power Cost Adjustment Mechanism

- Generally Accepted Accounting Principles

PURPA

- Public Utility Regulatory Policies Act of 1978

APCU

BCC

BPA

CAA
CO2
CWA
EGUs

EIS

EPA

EPS

ESA

FCA

FERC

FPA

GAAP

GHG

HCC

- Greenhouse Gas

- Hells Canyon Complex

Ida-West

- Ida-West Energy Company, a subsidiary of

IDACORP, Inc.

REC

RPS

SEC

- Renewable Energy Certificate

- Renewable Portfolio Standard

- U.S. Securities and Exchange Commission

Idaho ROE - Idaho-jurisdiction return on year-end equity

SMSP

- Security Plan for Senior Management

Employees

IERCo

- Idaho Energy Resources Co., a subsidiary of

SO2

- Sulfur Dioxide

Idaho Power Company

IESCo

- IDACORP Energy Services Co., a subsidiary

USFWS

- U.S. Fish and Wildlife Service

of IDACORP, Inc.

IFS

- IDACORP Financial Services, Inc., a
subsidiary of IDACORP, Inc.

IPUC

- Idaho Public Utilities Commission

VIEs

- Variable Interest Entities

4

 
 
 
 
 
 
 
 
 
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

In addition to the historical information contained in this report, this report contains (and oral communications made by 
IDACORP, Inc. and Idaho Power Company may contain) statements that relate to future events and expectations, such as 
statements regarding projected or future financial performance, cash flows, capital expenditures, dividends, capital structure or 
ratios, strategic goals, challenges, objectives, and plans for future operations.  Such statements constitute forward-looking 
statements within the meaning of the Private Securities Litigation Reform Act of 1995.  Any statements that express, or involve 
discussions as to, expectations, beliefs, plans, objectives, assumptions, or future events or performance, often, but not always, 
through the use of words or phrases such as "anticipates," "believes," "estimates," "expects," "intends," "potential," "plans," 
"predicts," "projects," "may result," "may continue," or similar expressions, are not statements of historical facts and may be 
forward-looking.  Forward-looking statements are not guarantees of future performance and involve estimates, assumptions, 
risks, and uncertainties. Actual results, performance, or outcomes may differ materially from the results discussed in the 
statements.  In addition to any assumptions and other factors and matters referred to specifically in connection with such 
forward-looking statements, factors that could cause actual results or outcomes to differ materially from those contained in 
forward-looking statements include those factors set forth in Part I, Item 1A - “Risk Factors” and Part II, Item 7 - 
“Management’s Discussion and Analysis of Financial Condition and Results of Operations" of this report, as well as in 
subsequent reports filed by IDACORP and Idaho Power with the Securities and Exchange Commission, and the following 
important factors: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the effect of decisions by the Idaho and Oregon public utilities commissions, the Federal Energy Regulatory 
Commission, and other regulators that impact Idaho Power's ability to recover costs and earn a return;

changes in residential, commercial, and industrial growth and demographic patterns within Idaho Power's service area 
and the loss or change in the business of significant customers, and their associated impacts on loads and load growth, 
and the availability of regulatory mechanisms that allow for timely cost recovery in the event of those changes;

the impacts of economic conditions, including the potential for changes in customer demand for electricity, revenue 
from sales of excess power, financial soundness of counterparties and suppliers, and the collection of receivables;

unseasonable or severe weather conditions, wildfires, drought, and other natural phenomena and natural disasters, 
which affect customer demand, hydroelectric generation levels, repair costs, and the availability and cost of fuel for 
generation plants or purchased power to serve customers;

advancement of technologies that reduce loads or reduce the need for Idaho Power's generation or sale of electric 
power;

adoption of, changes in, and costs of compliance with laws, regulations, and policies relating to the environment, 
natural resources, and threatened and endangered species, and the ability to recover increased costs through rates;

variable hydrological conditions and over-appropriation of surface and groundwater in the Snake River Basin, which 
may impact the amount of power generated by Idaho Power's hydroelectric facilities;

the ability to purchase fuel, power, and transmission capacity under reasonable terms, particularly in the event of 
unanticipated power demands, lack of physical availability, transportation constraints, or a credit downgrade;

accidents, fires (either at or caused by Idaho Power facilities), explosions, and mechanical breakdowns that may occur 
while operating and maintaining an electric system, which can cause unplanned outages, reduce generating output, 
damage the companies’ assets, operations, or reputation, subject the companies to third-party claims for property 
damage, personal injury, or loss of life, or result in the imposition of civil, criminal, and regulatory fines and penalties;

the increased costs and operational challenges associated with purchasing and integrating intermittent renewable 
energy sources into Idaho Power's resource portfolio;

administration of reliability, security, and other requirements for system infrastructure required by the Federal Energy 
Regulatory Commission and other regulatory authorities, which could result in penalties and increase costs;

disruptions or outages of Idaho Power's generation or transmission systems or of any interconnected transmission 
system;

the ability to obtain debt and equity financing or refinance existing debt when necessary and on favorable terms, which 
can be affected by factors such as credit ratings, volatility in the financial markets, interest rate fluctuations, decisions 
by the Idaho or Oregon public utility commissions, and the companies' past or projected financial performance;

reductions in credit ratings, which could adversely impact access to capital markets and would require the posting of 
additional collateral to counterparties pursuant to credit and contractual arrangements;

the ability to enter into financial and physical commodity hedges with creditworthy counterparties to manage price and 
commodity risk, and the failure of any such risk management and hedging strategies to work as intended;

5

 
 
 
 
 
 
 
 
 
• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

changes in actuarial assumptions, changes in interest rates, and the return on plan assets for pension and other post-
retirement plans, which can affect future pension and other postretirement plan funding obligations, costs, and 
liabilities;

the ability to continue to pay dividends based on financial performance, and in light of contractual covenants and 
restrictions and regulatory limitations;

changes in tax laws or related regulations or new interpretations of applicable laws by federal, state, or local taxing 
jurisdictions, the availability of tax credits, and the tax rates payable by IDACORP shareholders on common stock 
dividends;

employee workforce factors, including the operational and financial costs of unionization or the attempt to unionize all 
or part of the companies' workforce, the impact of an aging workforce and retirements, the cost and ability to retain 
skilled workers, and the ability to adjust the labor cost structure when necessary;

failure to comply with state and federal laws, policies, and regulations, including new interpretations and enforcement 
initiatives by regulatory and oversight bodies, which may result in penalties and fines and increase the cost of 
compliance, the nature and extent of investigations and audits, and the cost of remediation;

the inability to obtain or cost of obtaining and complying with required governmental permits and approvals, licenses, 
rights-of-way, and siting for transmission and generation projects and hydroelectric facilities;

the cost and outcome of litigation, dispute resolution, and regulatory proceedings, and the ability to recover those costs 
or the costs of operational changes through insurance or rates, or from third parties;

the failure of information systems or the failure to secure data, failure to comply with privacy laws, security breaches, 
or the direct or indirect effect on the companies' business or operations resulting from cyber attacks, terrorist incidents 
or the threat of terrorist incidents, and acts of war; 

unusual or unanticipated changes in normal business operations, including unusual maintenance or repairs, or the 
failure to successfully implement new technology solutions; and

adoption of or changes in accounting policies and principles, changes in accounting estimates, and new Securities and 
Exchange Commission or New York Stock Exchange requirements, or new interpretations of existing requirements.

Any forward-looking statement speaks only as of the date on which such statement is made. New factors emerge from time to 
time and it is not possible for management to predict all such factors, nor can it assess the impact of any such factor on the 
business or the extent to which any factor, or combination of factors, may cause results to differ materially from those contained 
in any forward-looking statement. IDACORP and Idaho Power disclaim any obligation to update publicly any forward-looking 
information, whether in response to new information, future events, or otherwise, except as required by applicable law.

6

 
 
 
 
 
 
 
 
 
 
  
PART I 
ITEM 1.  BUSINESS

OVERVIEW

Background

IDACORP, Inc. (IDACORP) is a holding company incorporated in 1998 under the laws of the state of Idaho.  Its principal 
operating subsidiary is Idaho Power Company (Idaho Power).  IDACORP is subject to the provisions of the Public Utility 
Holding Company Act of 2005, which provides the Federal Energy Regulatory Commission (FERC) and state utility regulatory 
commissions with access to books and records and imposes record retention and reporting requirements on IDACORP.

Idaho Power was incorporated under the laws of the state of Idaho in 1989 as the successor to a Maine corporation that was 
organized in 1915 and began operations in 1916.  Idaho Power is an electric utility engaged in the generation, transmission, 
distribution, sale, and purchase of electric energy and capacity and is regulated by the state regulatory commissions of Idaho 
and Oregon and by the FERC.  Idaho Power is the parent of Idaho Energy Resources Co. (IERCo), a joint venturer in Bridger 
Coal Company (BCC), which mines and supplies coal to the Jim Bridger generating plant owned in part by Idaho Power.  Idaho 
Power's utility operations constitute nearly all of IDACORP's current business operations and are IDACORP’s only reportable 
business segment.  Segment financial information is presented in Note 17 – "Segment Information" to the consolidated 
financial statements included in this report.  As of December 31, 2015, IDACORP had 2,002 full-time employees, 1,993 of 
whom were employed by Idaho Power, and 21 part-time employees, 19 of whom were employed by Idaho Power.

IDACORP’s other subsidiaries include IDACORP Financial Services, Inc. (IFS), an investor in affordable housing and other 
real estate investments; Ida-West Energy Company (Ida-West), an operator of small hydroelectric generation projects that 
satisfy the requirements of the Public Utility Regulatory Policies Act of 1978 (PURPA); and IDACORP Energy Services Co. 
(IESCo), the successor to IDACORP Energy L.P., a marketer of energy commodities that wound down operations in 2003.  

IDACORP’s and Idaho Power’s principal executive offices are located at 1221 W. Idaho Street, Boise, Idaho 83702, and the 
telephone number is (208) 388-2200.

Available Information

IDACORP and Idaho Power make available free of charge on their websites their Annual Report on Form 10-K, Quarterly 
Reports on Form 10-Q, Current Reports on Form 8-K, and all amendments to these reports filed or furnished pursuant to 
Section 13(a) or 15(d) of the U.S. Securities Exchange Act of 1934 as soon as reasonably practicable after the reports are 
electronically filed with or furnished to the U.S. Securities and Exchange Commission (SEC).  IDACORP's website is 
www.idacorpinc.com and Idaho Power's website is www.idahopower.com.  The contents of these websites are not part of this 
Annual Report on Form 10-K.  Reports, proxy and information statements, and other information regarding IDACORP and 
Idaho Power may also be obtained directly from the SEC’s website, www.sec.gov, or from the SEC’s Public Reference Room at 
100 F Street, NE, Washington, D.C. 20549.

UTILITY OPERATIONS

Background

Idaho Power provided electric utility service to approximately 525,000 general business customers in southern Idaho and 
eastern Oregon as of December 31, 2015.  Over 436,000 of these customers are residential.  Idaho Power’s principal 
commercial and industrial customers are involved in food processing, electronics and general manufacturing, agriculture, health 
care, and winter recreation.  Idaho Power holds franchises, typically in the form of right-of-way arrangements, in 71 cities in 
Idaho and 9 cities in Oregon and holds certificates from the respective public utility regulatory authorities to serve all or a 
portion of 25 counties in Idaho and 3 counties in Oregon.  Idaho Power's service area is shaded in the illustration on the 
following page and covers approximately 24,000 square miles with an estimated population of one million.

7

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Idaho Power is under the jurisdiction (as to rates, service, accounting, and other general matters of utility operation) of the 
Idaho Public Utilities Commission (IPUC), the Public Utility Commission of Oregon (OPUC), and the FERC.  The IPUC and 
OPUC determine the rates that Idaho Power is authorized to charge to its general business customers.  Idaho Power is also 
under the regulatory jurisdiction of the IPUC, the OPUC, and the Public Service Commission of Wyoming as to the issuance of 
debt and equity securities.  As a public utility under the Federal Power Act, Idaho Power has authority to charge market-based 
rates for wholesale energy sales under its FERC tariff and to provide transmission services under its open access transmission 
tariff (OATT).  Additionally, the FERC has jurisdiction over Idaho Power's sales of transmission capacity and wholesale 
electricity, hydroelectric project relicensing, and system reliability, among other items.  

Regulatory Accounting

Idaho Power is subject to accounting principles generally accepted in the United States of America, with the impacts of rate 
regulation reflected in its financial statements.  These principles sometimes result in Idaho Power recording expenses and 
revenues in a different period than when an unregulated enterprise would record such expenses and revenues.  In these 
instances, the amounts are deferred or accrued as regulatory assets or regulatory liabilities on the balance sheet and recorded on 
the income statement when recovered or returned in rates.  Additionally, regulators can impose regulatory liabilities upon a 
regulated company for amounts previously collected from customers that are expected to be refunded. Idaho Power records 
regulatory assets or liabilities if it is probable that they will be reflected in future prices, based on regulatory orders or other 
available evidence.

Business Strategy

IDACORP’s business strategy emphasizes Idaho Power as IDACORP’s core business, as Idaho Power's utility operations are 
the primary driver of IDACORP's operating results.  Idaho Power's three-part strategy can be summarized as follows:

•  Responsible Planning:  Idaho Power’s planning process is intended to ensure adequate generation, transmission, and 
distribution resources to meet anticipated population growth and increasing electricity demand.  This planning process 
integrates Idaho Power’s regulatory strategy and financial planning, including the consideration of regional economic 
development in the communities Idaho Power serves.

8

 
 
 
 
 
 
 
 
 
•  Responsible Development and Protection of Resources:  Idaho Power’s business strategy includes the development 
and protection of generation, transmission, distribution, and associated infrastructure, and stewardship of the natural 
resources upon which Idaho Power and the communities it serves depend.  Additionally, the strategy considers 
workforce planning and employee development and retention related to these strategic elements.

•  Responsible Energy Use:  Idaho Power's business strategy includes energy efficiency and demand response programs 
and preparation for potential carbon and renewable portfolio standards legislation.  The strategy also includes targeted 
reductions relating to carbon emission intensity and public reporting of these reductions, as well as operating Idaho 
Power's system in a manner that extracts additional value through changes in fuel mix and generation.

Idaho Power’s business strategy seeks to balance the interests of owners, customers, employees, and other stakeholders while 
maintaining the company’s financial stability and flexibility.  Idaho Power has further refined its three-part business strategy to 
include three core focuses for 2016—improving its core business, growing revenues, and enhancing the brand and positioning 
the company for the future.  IDACORP continues to focus on its core business and its goal of generating returns for its 
shareholders and long-term shareholder value. 

Rates and Revenues

Idaho Power generates revenue primarily through the sale of electricity to retail and wholesale customers and the provision of 
transmission service.  The prices that the IPUC, the OPUC, and the FERC authorize Idaho Power to charge for the electric 
power and services Idaho Power sells are a critical factor in determining IDACORP's and Idaho Power's results of operations 
and financial condition.  In addition to the discussion below, for more information on Idaho Power's regulatory framework and 
rate regulation, see the “Regulatory Matters” section of Part II, Item 7 – “Management’s Discussion and Analysis of Financial 
Condition and Results of Operations” (MD&A) and Note 3 – “Regulatory Matters” to the consolidated financial statements 
included in this report.

Retail Rates:  Idaho Power periodically evaluates the need to request changes to its retail electricity price structure to cover its 
operating costs and to seek to earn a return on its investments.  Idaho Power uses general rate cases, power cost adjustment 
(PCA) mechanisms, a fixed cost adjustment (FCA) mechanism, balancing accounts and tariff riders, and subject-specific filings 
to recover its costs of providing service and to earn a return on investment.  Retail prices are generally determined through 
formal ratemaking proceedings that are conducted under established procedures and schedules before the issuance of a final 
order.  Participants in these proceedings include Idaho Power, the staffs of the IPUC or OPUC, and other interested parties.  The 
IPUC and OPUC are charged with ensuring that the prices and terms of service are fair, are non-discriminatory, and provide 
Idaho Power an opportunity to recover its prudently incurred or allowable costs and expenditures and earn a reasonable return 
on investment.  The ability to request rate changes does not, however, ensure that Idaho Power will recover all of its costs or 
earn a specified rate of return, or that its costs will be recovered in advance of or at the same time as the costs are incurred. 

In addition to general rate case filings, ratemaking proceedings can involve charges or credits related to specific costs, 
programs, or activities, as well as the recovery or refund of amounts recorded under specific authorization from the IPUC or 
OPUC but deferred for recovery or refund.  Deferred amounts are generally collected from or refunded to retail customers 
through the use of base rates or supplemental tariffs.  Outside of base rates, three of the most significant mechanisms for 
recovery of costs are the PCA mechanisms, FCA mechanism, and energy efficiency rider.  The Idaho and Oregon PCA 
mechanisms are intended to address the volatility of power supply costs and provide for annual adjustments to the rates charged 
to retail customers by allowing partial recovery of the difference between net power supply costs included in base rates and 
actual net power supply costs incurred by Idaho Power.  The FCA mechanism is designed to remove Idaho Power’s financial 
disincentive to invest in energy efficiency programs by separating (or decoupling) the recovery of fixed costs from the variable 
kilowatt-hour charge for certain Idaho customer classes and linking it instead to a set amount per customer.  Separately, Idaho 
Power collects most of its energy efficiency program costs through an energy efficiency rider on customer bills.  

Wholesale Markets:  As a public utility subject to the provisions of Part II of the Federal Power Act (FPA), Idaho Power has 
authority to charge market-based rates for wholesale energy sales under its FERC tariff and to provide transmission services 
under its OATT.  Idaho Power’s OATT transmission rate is revised each year based primarily on financial and operational data 
Idaho Power files annually with the FERC in its Form 1.  The Energy Policy Act of 2005 granted the FERC increased statutory 
authority to implement mandatory transmission and network reliability standards, as well as enhanced oversight of power and 
transmission markets, including protection against market manipulation.  These mandatory transmission and reliability 
standards were developed by the North American Electric Reliability Corporation (NERC) and the Western Electricity 
Coordinating Council (WECC), which have responsibility for compliance and enforcement of transmission and reliability 
standards.

9

 
 
 
 
 
 
 
 
 
  
Idaho Power participates in the wholesale energy markets by purchasing power to help meet load demands and selling power 
that is in excess of load demands.  Idaho Power's market activities are guided by a risk management policy and frequently 
updated operating plans.  These operating plans are impacted by factors such as customer demand for power, market prices, 
generating costs, transmission constraints, and availability of generating resources.  Some of Idaho Power's 17 hydroelectric 
generation facilities are operated to optimize the water that is available by choosing when to run hydroelectric generation units 
and when to store water in reservoirs.  Idaho Power at times operates these and its other generation facilities to take advantage 
of market opportunities.  These decisions affect the timing and volumes of market purchases and market sales.  Even in below-
normal water years, there are opportunities to vary water usage to capture wholesale marketplace economic benefits, maximize 
generation unit efficiency and meet peak loads.  Compliance factors such as allowable river stage elevation changes and flood 
control requirements also influence these generation dispatch decisions.  Idaho Power's off-system sales revenues depend 
largely on the availability of generation resources above the amount necessary to serve customer loads as well as adequate 
market power prices at the time when those resources are available.  When either factor is low, off-system sales revenue is 
reduced.  

Energy Sales:  Weather, seasonal customer demand, and economic conditions all impact the amount of electricity that Idaho 
Power sells as well as the costs it incurs to provide that electricity.  Idaho Power's utility revenues are not earned, and associated 
expenses are not incurred, evenly during the year.  Idaho Power’s retail energy sales typically peak during the summer irrigation 
and cooling season, with a lower peak in the winter.  Extreme temperatures increase sales to customers who use electricity for 
cooling and heating, and moderate temperatures decrease sales.  Increased precipitation levels during the agricultural growing 
season reduce electricity sales to customers who use electricity to operate irrigation pumps.  The table that follows presents 
Idaho Power’s revenues and sales volumes for the last three years, classified by customer type.  Approximately 95 percent of 
Idaho Power’s general business revenue originates from customers located in Idaho, with the remainder originating from 
customers located in Oregon.  Idaho Power’s operations, including information on energy sales, are discussed further in Part II, 
Item 7 - MD&A - "Results of Operations - Utility Operations.” 

General business revenues (thousands of dollars)

Residential
Commercial
Industrial
Irrigation
Provision for rate refund for sharing mechanism
Deferred revenue related to Hells Canyon Complex relicensing AFUDC

Total general business revenues

Off-system sales
Other

Total revenues

Energy sales (thousands of MWh)

Residential
Commercial
Industrial
Irrigation

Total general business

Off-system sales

Total

Year Ended December 31,
2014

2013

2015

$

$

512,068
306,178
182,254
164,403
(3,159)
(10,706)
1,151,038
30,887
85,580
1,267,505

$

$

500,195
299,462
182,675
158,654
(7,999)
(10,706)
1,122,281
77,165
79,205
1,278,651

$

$

513,914
281,009
165,941
159,242
(7,602)
(10,776)
1,101,728
54,473
86,897
1,243,098

4,977
4,045
3,196
2,047
14,265
1,254
15,519

4,965
3,944
3,217
1,966
14,092
2,220
16,312

5,365
3,975
3,182
2,097
14,619
1,683
16,302

Competition:  Idaho Power's electric utility business has historically been recognized as a natural monopoly.  Idaho Power's 
rates for retail electric services are generally determined on a “cost of service” basis.  Rates are designed to provide, after 
recovery of allowable operating expenses including depreciation on capital investments, an opportunity for Idaho Power to earn 
a reasonable return on investment as authorized by regulators.  However, alternative methods of generation, including 
customer-owned solar and other forms of distributed generation, compete with Idaho Power for sales to existing customers.  
Also, non-utility businesses are developing new technologies and services to help energy consumers manage energy in new 

10

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ways that could alter demand for Idaho Power's electric energy.  Idaho Power also competes with fuel distribution companies in 
serving the energy needs of customers for space heating, water heating, and appliances.

Idaho Power also participates in the wholesale energy markets and in the electric transmission markets.  Generally, these 
wholesale markets are regulated by the FERC, which requires electric utilities to transmit power to or for wholesale purchasers 
and sellers and make available, on a non-discriminatory basis, transmission capacity for the purpose of providing these services. 

In return for agreeing to provide service to all customers within a defined service area, electric utilities are typically provided 
with an exclusive right to provide service in that service area.  However, certain prescribed areas within Idaho Power's service 
area, such as municipalities or Native American Tribal reservations, may elect not to take service from Idaho Power and instead 
operate as a municipal electric utility or otherwise as a separate entity.  In such cases, the entity would be required to purchase 
or otherwise obtain rights (such as by contract) to Idaho Power's distribution infrastructure within the municipal or other 
designated area.  Idaho Power would have no responsibility for providing electric service to the municipal or separate entity, 
absent Idaho Power's voluntary execution of an agreement to provide that service.  Separately, the Shoshone-Bannock Tribes, 
located in southeastern Idaho, have recently taken steps toward the adoption of a separate utility code applicable to electric 
utilities operating within the Shoshone-Bannock Tribal Reservation (Reservation).  The proposed tribal utility code, if adopted, 
could ultimately lead to Idaho Power's cessation of its historical provision of service to the Reservation and could result in 
either no or a limited electric service relationship with the Reservation, or could result solely in Idaho Power's sale of power to 
the Reservation pursuant to a power purchase agreement.  Idaho Power estimates that the average load for the Reservation over 
the prior five years is approximately 14 MW.

Power Supply

Overview:  Idaho Power primarily relies on company-owned hydroelectric, coal-fired, and gas-fired generation facilities and 
long-term power purchase agreements to supply the energy needed to serve customers.  Market purchases and sales are used to 
supplement Idaho Power's generation and balance supply and demand throughout the year.  Idaho Power’s generating plants 
and their capacities are listed in Part I, Item 2 - “Properties.”

Weather, load demand, supply constraints, economic conditions, and availability of generation resources impact power supply 
costs.  Idaho Power’s annual hydroelectric generation varies depending on water conditions in the Snake River Basin.  Drought 
conditions and increased peak load demand cause a greater reliance on potentially more expensive energy sources to meet load 
requirements.  Conversely, favorable hydroelectric generation conditions increase production at Idaho Power’s hydroelectric 
generating facilities and reduce the need for thermal generation and wholesale market purchased power.  Economic conditions 
and governmental regulations can affect the market price of natural gas and coal, which may impact fuel expense and market 
prices for purchased power.  Idaho Power's PCA mechanisms mitigate in large part the potentially adverse financial statement 
impacts of volatile fuel and power costs.

Idaho Power’s system is dual peaking, with the larger peak demand occurring in the summer.  The all-time system peak demand 
was 3,407 Megawatts (MW), set on July 2, 2013, at which time Idaho Power had deployed 30 MW of demand response 
programs to mitigate the load demand.  The all-time winter peak demand was 2,527 MW, set on December 10, 2009.  Idaho 
Power's peak demand during 2015 was 3,402 MW, the magnitude of which was diminished by the deployment of 60 MW of 
demand response programs during the peak load period.  During these and other similarly heavy load periods Idaho Power’s 
system is fully committed to serve load and meet required operating reserves.  The table that follows shows Idaho Power’s total 
power supply for the last three years.

11

 
 
 
 
 
 
 
 
 
 
 
2015

MWh
2014
(thousands of MWh)

2013

Percent of Total Generation
2014

2013

2015

Hydroelectric plants
Coal-fired plants
Natural gas fired plants

Total system generation

Purchased power - cogeneration and

small power production

Purchased power - other
Total purchased power
Total power supply

5,910
4,676
2,076
12,662

2,008
1,784
3,792
16,454

6,170
5,851
1,175
13,196

2,286
1,867
4,153
17,349

5,656
6,327
1,576
13,559

2,127
1,775
3,902
17,461

47%
37%
16%
100%

47%
44%
9%
100%

42%
47%
11%
100%

Hydroelectric Generation:  Idaho Power operates 17 hydroelectric projects located on the Snake River and its tributaries.  
Together, these hydroelectric facilities provide a total nameplate capacity of 1,709 MW and annual generation of approximately 
8.5 million Megawatt-hours (MWh) under median water conditions.  The amount of  water available for hydroelectric power 
generation depends on several factors—the amount of snow pack in the mountains upstream of Idaho Power’s hydroelectric 
facilities, upstream reservoir storage, springtime precipitation and temperatures, main river and tributary base flows, the 
condition of the Eastern Snake Plain Aquifer and its spring flow impact, summer time irrigation withdrawals and returns, and 
upstream reservoir regulation.  Idaho Power actively participates in collaborative work groups focused on water management 
issues in the Snake River Basin, with the goal of preserving the long-term availability of water for use at Idaho Power’s 
hydroelectric projects on the Snake River.  

During low water years, when stream flows into Idaho Power’s hydroelectric projects are reduced, Idaho Power’s hydroelectric 
generation is reduced.  The result is a greater reliance on other generation resources and power purchases.  In 2014, 
significantly low upstream carryover water storage hindered the impact of the runoff of near-normal snow accumulation, 
resulting in generation of 6.2 million MWh.  In 2015, below-normal snow accumulation resulted in a lower than median hydro 
production of 5.9 million MWh.  The Northwest River Forecast Center of the National Oceanic Atmospheric Administration 
reported that the 2015 April through July inflow volume into Brownlee Reservoir (the uppermost reservoir of Idaho Power's 
Hells Canyon Complex) was only 46 percent of normal.  By comparison, April through July Brownlee Reservoir inflow was 63 
percent of normal in 2014.  For 2016, Idaho Power estimates annual generation from its hydroelectric facilities of between 6.0 
million MWh and 8.0 million MWh.  

Idaho Power obtains licenses for its hydroelectric projects from the FERC, similar to other utilities that operate nonfederal 
hydroelectric projects on qualified waterways.  The licensing process includes an extensive public review process and involves 
numerous natural resource and environmental agencies.  The licenses last from 30 to 50 years depending on the size, 
complexity, and cost of the project.  Idaho Power is actively pursuing the relicensing of the Hells Canyon Complex project, its 
largest hydroelectric generation source.  Idaho Power also has three Oregon licenses under the Oregon Hydroelectric Act, which 
applies to Idaho Power’s Brownlee, Oxbow, and Hells Canyon facilities.  For further information on relicensing activities see 
Part II, Item 7 – MD&A – "Regulatory Matters – Relicensing of Hydroelectric Projects.”

Idaho Power is subject to the provisions of the FPA as a “public utility” and as a “licensee” by virtue of its hydroelectric 
operations.  As a licensee under Part I of the FPA, Idaho Power and its licensed hydroelectric projects are subject to conditions 
described in the FPA and related FERC regulations.  These conditions and regulations include, among other items, provisions 
relating to condemnation of a project upon payment of just compensation, amortization of project investment from excess 
project earnings, and possible takeover of a project after expiration of its license upon payment of net investment and severance 
damages.

Coal-Fired Generation:  Idaho Power co-owns the following coal-fired power plants:

• 
Jim Bridger located in Wyoming, in which Idaho Power has a one-third interest;
•  North Valmy located in Nevada, in which Idaho Power has a 50 percent interest; and
•  Boardman located in Oregon, in which Idaho Power has a 10 percent interest.

12

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Bridger Coal Company (BCC) supplies coal to the Jim Bridger power plant.  Idaho Power owns a one-third interest in BCC and 
PacifiCorp owns a two-third interest in BCC and is the operator of the Bridger Coal Mine.  The mine operates under a long-
term sales agreement that provides for delivery of coal over a 51-year period ending in 2024 from surface and underground 
sources.  Idaho Power believes that BCC has sufficient reserves to provide coal deliveries for at least the term of the sales 
agreement.  Idaho Power also has a coal supply contract providing for annual deliveries of coal through 2017 from the Black 
Butte Coal Company’s Black Butte mine located near the Jim Bridger plant.  This contract supplements the BCC deliveries and 
provides another coal supply to operate the Jim Bridger plant.  The Jim Bridger plant’s rail load-in facility and unit coal train, 
while limited, provides the opportunity to access other fuel supplies for tonnage requirements above established contract 
minimums.

NV Energy is the operator of the North Valmy power plant.  NV Energy and Idaho Power have contracts with a coal supplier 
through 2016.  Idaho Power's share of these contracts, together with the existing coal inventory at the North Valmy plant, are 
expected to meet Idaho Power's projected coal requirements at the plant through 2017.  Idaho Power expects to be able to 
obtain future coal requirements through similar contracts.

Portland General Electric Company is the operator of the Boardman power plant.  Idaho Power believes that it has sufficient 
inventory and coal contracts to supply the Boardman plant with fuel through 2016 and has 25 percent of projected fuel needs 
for 2017.  The Boardman plant receives coal through annual contracts with suppliers from the Powder River Basin in northeast 
Wyoming.  Idaho Power expects to meet future coal needs through similar contracts.  In December 2010, the Oregon 
Environmental Quality Commission approved a plan to cease coal-fired operations at the Boardman power plant no later than 
December 31, 2020.

Natural Gas-fired Generation:  Idaho Power owns and operates the Langley Gulch natural gas-fired combined cycle power 
plant and the Danskin and Bennett Mountain natural gas-fired simple cycle combustion turbine power plants.  All three plants 
are located in Idaho. 

Idaho Power operates the Langley Gulch plant as a baseload unit and the Danskin and Bennett Mountain plants to meet peak 
supply needs.  The plants are also used to take advantage of wholesale market opportunities.  Natural gas for all facilities is 
purchased based on system requirements and dispatch efficiency.  The natural gas is transported through the Williams-
Northwest Pipeline under Idaho Power's 55,584 million British thermal units (MMBtu) per day long-term gas transportation 
service agreements.  These transportation agreements vary in contract length but generally contain the right for Idaho Power to 
extend the term.  In addition to the long-term gas transportation service agreements, Idaho Power has entered into a long-term 
storage service agreement with Northwest Pipeline for 131,453 MMBtu of total storage capacity at the Jackson Prairie Storage 
Project.  This firm storage contract expires in 2043.  Idaho Power purchases and stores natural gas with the intent of fulfilling 
needs as identified for seasonal peaks or to meet system requirements.

As of December 31, 2015, approximately 9.8 million MMBtu's of natural gas was financially hedged for physical delivery for 
the operational dispatch of the Langley Gulch plant through January 2017.  Idaho Power plans to manage the procurement of 
additional natural gas for the peaking units on the daily spot market or from storage inventory as necessary to meet system 
requirements and fueling strategies.

Purchased Power:  As described below, Idaho Power purchases power in the wholesale market as well as power pursuant to 
long-term power purchase contracts and exchange agreements.

Wholesale Market Transactions:  To supplement its self-generated power and long-term purchase arrangements, Idaho Power 
purchases power in the wholesale market based on economics, operating reserve margins, risk management policy limitations, 
and unit availability.  Depending on availability of excess power or generation capacity, pricing, and opportunities in the 
markets, Idaho Power also sells power in the wholesale markets.  During 2015 and 2014, Idaho Power purchased 1.8 million 
MWh and 1.9 million MWh of power through wholesale market purchases at an average cost of $49.57 per MWh and $49.31 
per MWh, respectively.  During 2015 and 2014, Idaho Power sold 1.3 million MWh and 2.2 million MWh of power in 
wholesale market sales, with an average price of $24.63 per MWh and $34.76 per MWh, respectively.  

Long-term Power Purchase and Exchange Arrangements:  In addition to its wholesale market purchases, Idaho Power has the 
following notable firm long-term power purchase contracts and energy exchange agreements:

•  Telocaset Wind Power Partners, LLC - for 101 MW (nameplate generation) from its Elkhorn Valley wind project 

located in eastern Oregon.  The contract term is through 2027.

13

 
 
 
 
 
 
 
 
 
 
 
 
•  USG Oregon LLC - for 22 MW (estimated average annual output) from the Neal Hot Springs #1 geothermal power 

plant located near Vale, Oregon.  The contract term is through 2037.

•  Clatskanie People's Utility - for the exchange of up to 18 MW of energy from the Arrowrock hydroelectric project in 
southern Idaho in exchange for energy from Idaho Power's system or power purchased at the Mid-Columbia trading 
hub.  The initial term of the agreement was through December 31, 2015, but the term of the agreement has been 
extended through December 31, 2020.  Idaho Power has the right to renew the agreement for one additional five-year 
term.

•  Raft River Energy I, LLC - for up to 13 MW (nameplate generation) from its Raft River Geothermal Power Plant Unit 

#1 located in southern Idaho.  The contract term is through 2033.

PURPA Power Purchase Contracts:  Idaho Power purchases power from PURPA projects as mandated by federal law.  As of 
February 5, 2016, Idaho Power had contracts with on-line PURPA-related projects with a total of 784 MW of nameplate 
generation capacity, with an additional 423 MW nameplate capacity of projects projected to be on-line by June 1, 2017.  The 
power purchase contracts for these projects have original contract terms ranging from one to 35 years.  The expense and volume 
of PURPA project power purchases during the last three years is included in the following table: 

PURPA contract expense (in thousands)
MWh purchased under PURPA contracts (in thousands)
Average cost per MWh from PURPA contracts

$

$

Year Ended December 31,
2014
144,617 $
2,286

2015
131,340 $
2,008

2013
131,338
2,127

65.41 $

63.26 $

61.75

Pursuant to the requirements of PURPA, the IPUC and OPUC have each issued orders and rules regulating Idaho Power’s 
purchase of power from "qualifying facilities" that meet the requirements of PURPA.  A key component of the PURPA contracts 
is the energy price contained within the agreements.  PURPA regulations specify that a utility must pay energy prices based on 
the utility’s avoided costs.  The IPUC and OPUC have established specific rules and regulations to calculate the avoided cost 
that Idaho Power is required to include in PURPA contracts.  For PURPA power purchase agreements:

• 

• 

Idaho Power is required to purchase all of the output from the facilities located inside its service area, subject to some 
exceptions such as adverse impacts on system reliability.
Idaho Power is required to purchase the output of projects located outside its service area if it has the ability to receive 
power at the facility’s requested point of delivery on Idaho Power's system.

•  The IPUC jurisdictional portion of the costs associated with PURPA contracts is fully recovered through base rates and 
the PCA, and the OPUC jurisdictional portion is recovered through general rate case filings and an Oregon PCA 
mechanism.  Thus, the primary impact of high power purchase costs under PURPA contracts is on customer rates. 
•  The IPUC issued an order in August 2015 that revised the standard PURPA power purchase contract term for new 

contracts to 2 years from the previously required 20 year term. 

•  OPUC jurisdictional regulations have generally provided for PURPA standard contract terms of up to 20 years. Various 
ongoing cases are being processed at the OPUC in which the contract term and other PURPA regulations are being 
reviewed.

•  The IPUC requires Idaho Power to pay "published avoided cost" rates for all wind and solar projects that are smaller 

than 100 kilowatts (kW) and all other types of projects that are smaller than 10 average MWs.  For PURPA qualifying 
facilities that exceed these size limitations, Idaho Power is required to negotiate an applicable price (premised on 
avoided costs) based upon IPUC regulations.

•  The OPUC requires that Idaho Power pay the published avoided costs for all PURPA qualifying facilities with a 

nameplate rating of 10 MW or less and that Idaho Power negotiate an applicable price (premised on avoided costs) for 
all other qualifying facilities based upon OPUC regulations.  As part of the ongoing cases at the OPUC, the OPUC has 
temporarily reduced this nameplate rating for solar and wind projects to 3 MW.

Idaho Power, as well as other affected electric utilities, have engaged in proceedings at the IPUC and OPUC relating to PURPA 
contracts.  Final rulings were issued in the IPUC proceedings in 2015, and the OPUC proceedings are ongoing.  These 
proceedings have related to, among other things, appropriate contract term lengths and the prices paid for energy purchased 
from PURPA projects.  Refer to Part II - Item 7 - MD&A - "Regulatory Matters - Renewable Energy Contracts and PURPA" for 
a summary of those proceedings.

Consideration of Participation in Energy Imbalance Market:  Utilities in the western United States outside the California 
Independent System Operator (California ISO) have traditionally relied upon a combination of automated and manual dispatch 

14

 
 
 
 
 
 
 
 
 
 
 
 
within the hour to balance generation and load to maintain reliable supply.  These utilities have limited capability to transact 
within the hour outside their own borders.  In contrast, energy imbalance markets use automated intra-hour economic dispatch 
of generation from committed resources to serve loads.  The California ISO and PacifiCorp implemented a new energy 
imbalance market in 2014 (Western EIM) under which the parties enabled their systems to interact for dispatch purposes.  The 
Western EIM is intended to reduce the power supply costs to serve customers through more efficient dispatch of a larger and 
more diverse pool of resources, to integrate intermittent power from renewable generation sources more effectively, and to 
enhance reliability.  Participation in the Western EIM is voluntary and available to all balancing authorities in the western 
United States.  Since 2015, Idaho Power has been evaluating the potential power supply cost savings and other advantages, 
system upgrade requirements, capital and ongoing operating costs, and other aspects of Idaho Power's potential participation in 
the Western EIM.  

Transmission Services

Electric transmission systems deliver energy from electric generation facilities to distribution systems for final delivery to 
customers.  Transmission systems are designed to move electricity over long distances because generation facilities can be 
located hundreds of miles away from customers.  Idaho Power’s generating facilities are interconnected through its integrated 
transmission system and are operated on a coordinated basis to achieve maximum capability and reliability.  Idaho Power’s 
transmission system is directly interconnected with the transmission systems of the Bonneville Power Administration, Avista 
Corporation, PacifiCorp, NorthWestern Energy, and NV Energy.  These interconnections, coupled with transmission line 
capacity made available under agreements with some of those entities, permit the interchange, purchase, and sale of power 
among entities in the Western Interconnection.  Idaho Power provides wholesale transmission service for eligible transmission 
customers on a non-discriminatory basis.  Idaho Power is a member of the WECC, the NWPP, the Northern Tier Transmission 
Group, and the North American Energy Standards Board.  These groups have been formed to more efficiently coordinate 
transmission reliability and planning throughout the Western Interconnection.

Transmission to serve Idaho Power's retail customers is subject to the jurisdiction of the IPUC and OPUC for retail rate making 
purposes.  Idaho Power provides cost-based wholesale and retail access transmission services under the terms of a FERC 
approved OATT.  Services under the OATT are offered on a nondiscriminatory basis such that all potential customers, including 
Idaho Power, have an equal opportunity to access the transmission system.  As required by FERC standards of conduct, Idaho 
Power's transmission function is operated independently from Idaho Power's energy marketing function.    

Idaho Power is jointly working on the permitting of two significant transmission projects.  The Boardman-to-Hemingway line 
is a proposed 300-mile, 500-kV transmission project between a station near Boardman, Oregon and the Hemingway station near 
Boise, Idaho.  The Gateway West line is a proposed 500-kV transmission project between a station located near Douglas, 
Wyoming and the Hemingway station.  Both projects are intended to meet future anticipated resource needs and are discussed 
in Part II, Item 7 –  MD&A - "Liquidity and Capital Resources - Capital Requirements" in this report.  

Resource Planning 

Integrated Resource Planning:  The IPUC and OPUC require that Idaho Power prepare biennially an Integrated Resource Plan 
(IRP).  Idaho Power filed its most recent IRP in June 2015.  The IRP seeks to forecast Idaho Power's loads and resources for a 
20-year period, analyzes potential supply-side and demand-side resource options, and identifies potential near-term and long-
term actions.  The four primary goals of the IRP are to: 

• 

• 
• 
• 

identify sufficient resources to reliably serve the growing demand for energy within Idaho Power's service area 
throughout the 20-year planning period;
ensure the selected resource portfolio balances cost, risk, and environmental concerns;
give equal and balanced treatment to both supply-side resources and demand-side measures; and
involve the public in the planning process in a meaningful way.

During the time between IRP filings, the public and regulatory oversight of the activities identified in the IRP allows for 
discussion and adjustment of the IRP as warranted.  Idaho Power makes periodic adjustments and corrections to the resource 
plan to reflect economic conditions, anticipated resource development, changes in technology, and regulatory requirements.

The load forecast Idaho Power used for purposes of the 2015 IRP predicts an average annual growth rate of 1.2 percent for 
average loads and 1.5 percent for summer peak loads over the 20-year planning horizon from 2015 to 2034.  The rate of load 
growth can impact the timing and extent of development of resources, such as new generation plants or transmission 
infrastructure, to serve those loads.  The load forecast Idaho Power used in the 2013 IRP predicted an average annual growth 

15

 
 
 
 
 
 
 
 
 
 
 
 
 
rate of 1.1 percent for average loads and 1.4 percent for summer peak loads over the 20-year planning horizon from 2013 to 
2032.

The 2015 IRP identified a preferred resource portfolio, which includes the completion of the Boardman-to-Hemingway 500-kV 
transmission line and the potential early retirement of the North Valmy power plant, both in 2025, with no other new resource 
needs prior to 2025.  However, as noted in the 2015 IRP, there is considerable uncertainty surrounding the resource sufficiency 
estimates and project completion dates, including uncertainty around the timing and extent of third party development of 
renewable resources, implementation of the EPA's rules under Section 111(d) of the Clean Air Act, the actual completion date 
of the Boardman-to-Hemingway transmission project, and the economics and logistics of plant retirements.  These and other 
uncertainties could result in changes to the desirability of the preferred portfolio and adjustments to the timing and nature of 
anticipated and actual actions. 

The 2015 IRP includes as near-term action items the continued permitting and planning for the Boardman-to-Hemingway 
transmission line and further investigation of the early retirement of the North Valmy power plant in collaboration with the 
plant's co-owner.  The near-term action plan also includes a decrease in the size of the planned Shoshone Falls expansion from 
50 MW to a range of 1.7 MW to 4 MW with a scheduled on-line date in 2019, as well as commencement of an economic 
evaluation of environmental control retrofits for units 1 and 2 at the Jim Bridger power plant. 

Energy Efficiency and Demand Response Programs:  Idaho Power’s energy efficiency and demand response portfolio is 
comprised of 22 programs.  These energy efficiency and demand response programs target energy savings across the entire year 
and system demand reduction in the summer.  The programs are offered to all customer segments and emphasize the wise use of 
energy, especially during periods of high demand.  This energy and demand reduction can minimize or delay the need for new 
generation or transmission infrastructure.  Idaho Power’s programs include:

• 

• 

• 

• 

financial incentives for irrigation customers for either improving the energy efficiency of an irrigation system or 
installing new energy efficient systems;
energy efficiency for new and existing homes including heating, ventilation and cooling  equipment, energy efficient 
building techniques, insulation improvement, air duct sealing, and energy efficient lighting;
incentives to industrial and commercial customers for acquiring energy efficient equipment, and using energy 
efficiency techniques for operational and management processes;
demand response programs to reduce peak summer demand through the voluntary cycling of central air conditioners 
for residential customers, interruption of irrigation pumps, and reduction of commercial and industrial demand through 
actions taken by business owners and operators; and

•  membership in the Northwest Energy Efficiency Alliance, which supports market transformation efforts across the 

region.

In 2015, Idaho Power’s energy efficiency programs reduced energy usage by approximately 140,000 MWh.  For 2015, Idaho 
Power had a demand response available capacity of approximately 385 MW.  In 2015 and 2014, Idaho Power expended 
approximately $39 million and $37 million, respectively, on both energy efficiency and demand response programs.  Funding 
for these programs is provided through a combination of the Idaho and Oregon energy efficiency tariff riders, base rates, and 
the Idaho PCA mechanism.

Environmental Regulation and Costs

Idaho Power's activities are subject to a broad range of federal, state, regional, and local laws and regulations designed to 
protect, restore, and enhance the quality of the environment.  Environmental regulation impacts Idaho Power’s operations due 
to the cost of installation and operation of equipment and facilities required for compliance with environmental regulations, the 
modification of system operations to accommodate environmental regulations, and the cost of acquiring and complying with 
permits and licenses.  In addition to generally applicable regulations, Idaho Power's three coal-fired power plants, three natural 
gas combustion turbine power plants, and 17 hydroelectric generating plants are subject to a broad range of environmental 
requirements, including those related to air and water quality, waste materials, and endangered species.  For a more detailed 
discussion of these and other environmental issues, refer to Item 7 - MD&A - "Environmental Matters" in this report.

Environmental Expenditures: Idaho Power’s environmental compliance expenditures will remain significant for the 
foreseeable future, especially given the additional regulations proposed and issued at the federal level.  Idaho Power estimates 
its environmental expenditures, based upon present environmental laws and regulations, will be as follows for the periods 
indicated, excluding allowance for funds used during construction (AFUDC) (in millions of dollars):

16

 
 
 
 
 
 
 
 
 
Capital expenditures:

License compliance and relicensing efforts at hydroelectric facilities
Investments in equipment and facilities at thermal plants

Total capital expenditures

Operating expenses:

Operating costs for environmental facilities - hydroelectric
Operating costs for environmental facilities - thermal

Total operations and maintenance

2016

2017 - 2018

$

$

$

$

16
29
45

22
14
36

$

$

$

$

27
11
38

44
27
71

Idaho Power anticipates that finalization and implementation of a number of federal and state rulemakings and other 
proceedings addressing, among other things, greenhouse gases and endangered species, could result in substantially increased 
operating and compliance costs in addition to the amounts set forth above, but Idaho Power is unable to estimate those costs 
given the uncertainty associated with potential future regulations.  Idaho Power would seek to recover those increased costs 
through the ratemaking process. 

Idaho Power monitors environmental requirements and assesses whether environmental control measures are or remain 
economically appropriate.  Continued review of the economic appropriateness of further investments in coal-fired plants was 
included in a February 2014 order of the IPUC, in which the IPUC requested that Idaho Power continue monitoring 
environmental requirements at a national level and account for their impact in resource planning and promptly apprise the IPUC 
of developments that could impact the company's continued reliance on the North Valmy plant as a coal-fired resource.  Idaho 
Power has been working with the plant's co-owner to monitor environmental requirements and costs associated with the plant, 
and to develop alignment on potential retirement dates for the plant.  In its 2015 IRP, Idaho Power included retirement scenarios 
ranging from 2019 to 2025 for the North Valmy plant, with a later date within that range being more likely. 

Voluntary CO2 Intensity Reduction Goal: Idaho Power is engaged in voluntary greenhouse gas emissions intensity reduction 
efforts.  In September 2009, IDACORP's and Idaho Power's boards of directors approved guidelines that established a goal to 
reduce Idaho Power's resource portfolio's average carbon dioxide (CO2) emissions intensity for the 2010 through 2013 time 
period to a level of 10 to 15 percent below Idaho Power's 2005 CO2 emissions intensity of 1,194 lbs CO2/MWh.  The 
combination of effective utilization of hydroelectric projects, above average stream flows in some years, reduced usage of coal-
fired facilities, the purchase of renewable energy, and the addition of the Langley Gulch natural gas-fired power plant 
positioned Idaho Power to extend its CO2 emissions intensity reduction goal period for an additional two years, targeting an 
average reduction of 10 to 15 percent below its 2005 levels for the entire 2010 through 2015 time period.  Idaho Power 
achieved its initial reduction goal, as well as its extended goal through 2015. Idaho Power estimates that its average CO2 
emission intensity from company-owned resources for the 2010 through 2015 period was 21 percent below the 2005 CO2 
emission intensity level.  

In 2015, Idaho Power further extended and expanded the goal, seeking to reduce the company-owned resource portfolio 
average CO2 emission intensity to 15-20 percent below 2005 levels for the 2010-2017 period.  

Carbon Disclosure Project Reporting:  Idaho Power's estimated historic CO2 emissions intensity from its generation facilities, 
as submitted to the Carbon Disclosure Project, was as follows:

Emission Intensity (lbs CO2/MWh)

2010

1,060

2011

677

2012

871

2013

1,129

2014

1,019

IDACORP FINANCIAL SERVICES, INC.

IFS invests in affordable housing developments, which provide a return principally by reducing federal and state income taxes 
through tax credits and accelerated tax depreciation benefits.  IFS has focused on a diversified approach to its investment 
strategy in order to limit both geographic and operational risk with most of IFS’s investments having been made through 
syndicated funds.  IFS is no longer actively pursuing further investment opportunities, but will continue to maintain and 
manage its current portfolio of investments.  At December 31, 2015, the gross amount of IFS’s portfolio equaled $182 million 
in tax credit investments.  IFS generated tax credits of $3.3 million, $5.2 million, and $5.5 million in 2015, 2014, and 2013, 
respectively.  

17

 
 
 
 
 
 
 
 
 
 
 
IDA-WEST ENERGY COMPANY

Ida-West operates and has a 50 percent ownership interest in nine hydroelectric projects that have a total generating capacity of 
45 MW.  Four of the projects are located in Idaho and five are in northern California.  All nine projects are “qualifying 
facilities” under PURPA.  Idaho Power purchased all of the power generated by Ida-West’s four Idaho hydroelectric projects at 
a cost of approximately $8 million in 2015 and $9 million in both 2014 and 2013.

EXECUTIVE OFFICERS OF THE REGISTRANTS

The names, ages, and positions of the executive officers of IDACORP and Idaho Power are listed below (in alphabetical order), 
along with their business experience during at least the past five years.  Mr. J. LaMont Keen, a member of IDACORP's and 
Idaho Power's boards of directors and former President and Chief Executive Officer of IDACORP and Idaho Power, and Mr. 
Steven R. Keen, are brothers.  There are no other family relationships among these officers, nor is there any arrangement or 
understanding between any officer and any other person pursuant to which the officer was appointed.

DARREL T. ANDERSON, 57

President and Chief Executive Officer of IDACORP, Inc., May 2014 - present
President and Chief Executive Officer of Idaho Power Company, January 2014 - present
President and Chief Financial Officer of Idaho Power Company, January 2012 - December 2013

• 
• 
• 
•  Executive Vice President, Administrative Services and Chief Financial Officer of IDACORP, Inc., October 2009 - 

April 2014

•  Executive Vice President, Administrative Services and Chief Financial Officer of Idaho Power Company, October 

2009 - December 2011

•  Member of the Boards of Directors of both IDACORP, Inc. and Idaho Power Company since September 2013

REX BLACKBURN, 60

• 

Senior Vice President and General Counsel, IDACORP, Inc. and Idaho Power Company, April 2009 - present

 LISA A. GROW, 50

• 
• 

Senior Vice President of Operations of Idaho Power Company, January 2016 - present
Senior Vice President - Power Supply of Idaho Power Company, October 2009 - December 2015

 STEVEN R. KEEN, 55

Senior Vice President - Chief Financial Officer, and Treasurer of IDACORP, Inc., May 2014 - present
Senior Vice President - Chief Financial Officer, and Treasurer of Idaho Power Company, January 2014 - present

• 
• 
•  Vice President - Finance and Treasurer of IDACORP, Inc., June 2010 - April 2014
• 
•  Vice President - Finance and Treasurer of Idaho Power Company, June 2010 - December 2011
•  Vice President and Treasurer of IDACORP, Inc. and Idaho Power Company, June 2006 - May 2010

Senior Vice President - Finance and Treasurer of Idaho Power Company, January 2012 - December 2013

LONNIE KRAWL, 52

• 

Senior Vice President of Administrative Services and Chief Information Officer of Idaho Power Company, January 
2016 - present

•  Vice President and Chief Information Officer of Idaho Power Company, October 2013 - December 2015
•  Director of Human Resources of Idaho Power Company, July 2009 - September 2013

DANIEL B. MINOR, 58

•  Executive Vice President of Idaho Power Company, January 2016 - present
•  Executive Vice President and Chief Operating Officer of Idaho Power Company, January 2012 - December 2015
•  Executive Vice President of IDACORP, Inc., May 2010 - present
•  Executive Vice President - Operations of Idaho Power Company, October 2009 - December 2011

18

 
 
 
 
 
 
 
 
 
 
 
 
 
TESSIA PARK, 54

•  Vice President of Power Supply of Idaho Power Company, January 2016 - present
•  Director of Load Serving Operations of Idaho Power Company, September 2012 - December 2015
•  Operating Projects Manager of Idaho Power Company, January 2011 - September 2012
•  Manager of Power Supply Operations of Idaho Power Company, August 2009 - January 2011

KEN W. PETERSEN, 52

•  Vice President, Controller and Chief Accounting Officer of IDACORP, Inc. and Idaho Power Company, January 2014 

- present

•  Corporate Controller and Chief Accounting Officer of IDACORP, Inc. and Idaho Power Company, May 2010 - 

December 2013

•  Corporate Controller of IDACORP, Inc. and Idaho Power Company, December 2007 - May 2010

N. VERN PORTER, 56

Senior Vice President of Customer Operations of Idaho Power Company, April 2015 - December 2015

•  Vice President of Customer Operations of Idaho Power Company, January 2016 - present
• 
•  Vice President of Idaho Power Company, January 2014 - April 2015
•  Vice President of Delivery Engineering and Construction of Idaho Power Company, May 2012 - December 2013
•  Vice President of Delivery Engineering and Operations of Idaho Power Company, October 2009 - May 2012

ITEM 1A.  RISK FACTORS

IDACORP and Idaho Power operate in a highly regulated industry and business environment that involves significant risks, 
many of which are beyond the companies' control.  The circumstances and factors set forth below may have a material impact 
on the business, financial condition, or results of operations of IDACORP and Idaho Power and could cause actual results or 
outcomes to differ materially from those discussed in any forward-looking statements.  These risk factors, as well as other 
information in this report and in other reports the companies file with the SEC, should be considered carefully when making 
any investment decisions relating to IDACORP or Idaho Power.  

If state public utility commissions or the Federal Energy Regulatory Commission authorize customer rates that under-
collect or untimely collect through rates the amount Idaho Power needs to cover costs and earn a reasonable rate of return, 
IDACORP's and Idaho Power's financial condition and results of operations may be adversely affected.  The prices that the 
Idaho Public Utilities Commission (IPUC) and Public Utility Commission of Oregon (OPUC) authorize Idaho Power to charge 
customers for its retail services, and the tariff rate that the Federal Energy Regulatory Commission (FERC) permits Idaho 
Power to charge for its transmission services, are generally the most significant factors influencing IDACORP’s and Idaho 
Power’s business, results of operations, and financial condition.  Idaho Power's ability to recover its costs and earn a reasonable 
rate of return can be affected by many factors, including the time lag between when costs are incurred and when those costs are 
recovered in customers’ rates, and differences between the costs embedded in rates and the amount of actual costs incurred.  
Idaho Power is often required to incur costs before the IPUC, OPUC, or FERC approves the recovery of those costs, and the 
IPUC, OPUC, and FERC may not allow Idaho Power to recover costs on the basis that such costs were not reasonably or 
prudently incurred or for other reasons.  While rate regulation is premised on the assumption that rates will be established that 
are fair, just, and reasonable, regulators have considerable discretion in applying this standard.  The ratemaking process 
typically involves multiple intervening parties, including governmental bodies, consumer advocacy groups, and customers, 
generally with the common objective of limiting rate increases or even reducing rates.  Denial or probable denial of recovery by 
regulators may cause Idaho Power to record an impairment of its assets.  In a number of proceedings in recent years, Idaho 
Power has been denied recovery, or required to defer recovery pending the next general rate case, including denials or deferrals 
related to compensation expenses.   

For additional information relating to Idaho Power's regulatory framework and regulatory matters, see Part I - Item 1 - 
"Business - Utility Operations," Note 3 - "Regulatory Matters" to the consolidated financial statements included in this report, 
and Part II - Item 7 - "Management's Discussion and Analysis of Financial Condition and Results of Operations - Regulatory 
Matters" in this report.

Idaho Power's cost recovery mechanisms may not function as intended and are subject to change, which may adversely 
affect IDACORP's and Idaho Power's financial condition and results of operations.  Idaho Power has power cost adjustment 
mechanisms in its Idaho and Oregon jurisdictions and a fixed cost adjustment mechanism in Idaho that provide for periodic 
adjustments to the rates charged to its retail customers.  The power cost adjustment mechanisms track Idaho Power’s actual net 

19

 
 
 
 
 
 
 
 
 
 
 
 
 
power supply costs (primarily fuel and purchased power less off-system sales) and compare these amounts to net power supply 
costs being recovered in retail rates.  A majority of the difference between these two amounts is deferred for future recovery 
from, or refund to, customers through rates.  In recent years, the volatility in power supply costs has been significant, in large 
part due to changes in hydroelectric generation conditions and the cost of purchase of renewable energy under long-term 
contracts.  While the power cost adjustment mechanisms function to mitigate the potentially adverse impact on net income of 
power supply cost volatility, the mechanisms do not eliminate the cash flow impact of that volatility.  When power costs rise 
above the level recovered in current retail rates, Idaho Power incurs the costs but recovery of those costs is deferred to a 
subsequent collection period, which can adversely affect Idaho Power’s operating cash flow and liquidity until those costs are 
recovered from customers.  The fixed cost adjustment mechanism is a decoupling mechanism designed to remove Idaho 
Power's disincentive to invest in energy efficiency activities by allowing Idaho Power to charge residential and small 
commercial customers when it recovers less than the base level of fixed costs per customer that the IPUC authorized for 
recovery in the most recent general rate case.  Both the power cost and fixed cost adjustment mechanisms were approved 
through the regulatory process, and thus they are subject to change at the discretion of applicable state regulators, who could 
decide to modify or eliminate either mechanism in a manner that adversely impacts IDACORP's and Idaho Power's financial 
condition, cash flows, and results of operations. 

IDACORP's and Idaho Power's business, financial condition, and results of operations may be negatively affected by 
changes in customer growth or customer usage.  Growth in the number of customers and customers' usage of electricity are 
affected by a number of factors, such as population growth or decline in Idaho Power's service area, adoption rates of energy 
efficiency measures, customer-generated power such as from rooftop solar panels, demand side management requirements, and 
economic conditions.  Many electric utilities have experienced a decline in usage per customer, in part attributable to energy 
efficiency activities.  While Idaho Power has recently experienced a net growth in usage due to an increase in the number of 
customers, when adjusted for the impacts of weather the average monthly usage on a per customer basis for Idaho residential 
customers has declined from 1,059 kWh in 2009 to 1,012 kWh in 2014.  Rate mechanisms, such as the Idaho fixed cost 
adjustment, are designed to address the financial disincentive associated with promoting energy efficiency activities, but there is 
no assurance that the mechanism will result in full or timely collection of Idaho Power's fixed costs, which are currently 
collected in large part through the company's kWh energy rates that are based on historical sales volume.  Any undercollection 
of fixed costs would adversely impact revenues, earnings, and cash flows.  Weak economic conditions may also reduce the 
amount of energy Idaho Power’s customers consume, result in a loss of customers (including large-load industrial and 
commercial customers) or further decrease the customer growth rate, and increase the likelihood and prevalence of late 
payments and uncollectible accounts.  The formation of municipal utilities or similar entities for distribution systems within 
Idaho Power's service area could also result in a load decrease.  The loss of loads resulting from some of these events may 
result in IDACORP and Idaho Power modifying or eliminating large generation or transmission projects.  This could in turn 
result in write-downs or write-offs if regulators determine that the costs of the projects were incurred imprudently, which could 
have a material adverse impact on IDACORP's and Idaho Power's financial condition, results of operations, and cash flows.  

Conversely, if Idaho Power were to experience an unanticipated increase in the demand for energy through, for example, the 
rapid addition of new industrial and commercial customers, Idaho Power may be required to rely on higher-cost purchased 
power to meet peak system demand and may need to accelerate investment in additional generation or transmission resources.  
If the incremental costs associated with the unanticipated changes in loads exceed the incremental revenue received from the 
sales to the new customers, and Idaho Power is unable to secure timely and full rate relief to recover those increased costs, the 
resulting imbalance could have an adverse effect on IDACORP's and Idaho Power's financial condition, results of operations, 
and cash flows.  

IDACORP's and Idaho Power's operating results fluctuate seasonally and can be adversely affected by changes in weather 
conditions and severe weather.  Idaho Power's electric power sales are seasonal, with demand in Idaho Power's service area 
peaking during the hot summer months, with a secondary peak during the cold winter months.  Electric power demands by 
irrigation customers in Idaho Power's service area, which are impacted by temperatures and the timing and amount of 
precipitation, among other factors, can also create significant seasonal changes in usage.  Seasonality of revenues may be 
further impacted by Idaho Power's tiered rate structure, under which rates charged to customers are often higher during higher-
load periods.  Market prices for power also often increase significantly during these peak periods, at times when Idaho Power is 
required to purchase power in the wholesale markets to meet customer demand.  By contrast, when temperatures are relatively 
mild or where precipitation supplants irrigation systems, loads are often lower as customers are not using electricity for heating 
and air conditioning or irrigation purposes.  Thus, weather conditions and the timing and extent of precipitation can cause 
IDACORP's and Idaho Power's results of operations and financial condition to fluctuate seasonally, quarterly, and from year to 
year. 

20

 
 
 
 
 
 
 
 
 
Extreme weather events and their associated impacts (such as fires, high winds, and snow loading) can damage generation 
facilities and disrupt transmission and distribution systems, causing service interruptions and extended outages through downed 
transmission and distribution lines, increasing supply chain costs and limiting Idaho Power's ability to meet customer energy 
demand.  Sustained drought conditions are likely to decrease power generation from hydroelectric plants.  The effect of the 
failure of Idaho Power's facilities to operate as planned under extreme weather conditions is particularly burdensome during 
peak demand periods, such as hot summer days.  Damage and disruption in generation, transmission, and distribution systems 
due to weather-related factors also increases operations and maintenance expenses.  Costs incurred as a result of such events 
might not be recovered through customer rates if the costs incurred are greater than those allowed for recovery by regulators, 
and the costs of repair and replacing infrastructure or liability for personal injury or property damage may not be covered in full 
by insurance. 

New advances in power generation, energy efficiency, or other technologies that impact the power utility industry could 
decrease revenues. The increasing cost of energy in the electric utility industry has encouraged the development of new 
technologies for power generation, power storage, and energy efficiency.  In particular, in recent years the cost of solar 
generation has decreased significantly, and there are federal tax incentives in place to help further reduce the cost of solar 
generation.  There is potential that customer-owned power generation systems, particularly if coupled with power storage 
devices, could become sufficiently cost-effective and efficient that an increasing number of Idaho Power's customers choose to 
install such systems on their homes or businesses.  Additionally, considerable emphasis has been placed on energy efficiency, 
such as LED lighting and high-efficiency appliances.  Energy efficiency programs, including programs sponsored by Idaho 
Power under a directive from state regulatory commissions, are designed to reduce energy demand.  If Idaho Power is unable to 
adjust its rate design or maintain adequate regulatory mechanisms allowing for timely cost recovery, declining usage from 
customer-owned generation sources and energy efficiency would result in under-recovery of Idaho Power's costs and reduce 
revenues, which would impact IDACORP's and Idaho Power's financial condition and results of operations. 

Capital expenditures for infrastructure, risks associated with construction of that infrastructure, and the timing and 
availability of cost recovery for the expenditures, can significantly affect IDACORP's and Idaho Power's financial condition 
and results of operations.  Idaho Power’s business is capital intensive and requires significant investments in energy 
generation, transmission, and distribution infrastructure.  A significant portion of Idaho Power’s facilities were constructed 
many years ago, and thus require periodic upgrades and frequent maintenance.  Also, long-term anticipated increases in both the 
number of customers and the demand for energy require expansion and reinforcement of that infrastructure.  For instance, Idaho 
Power is in the permitting process for two 500-kV transmission line projects, which are intended to help meet future customer 
energy demands.  Construction projects are subject to usual permitting and construction risks that can adversely affect project 
costs and the completion time.  These risks include, as examples:

• 
• 
• 
• 
• 
• 
• 

the ability to timely obtain labor or materials at reasonable costs, and defaults by contractors; 
equipment, engineering, and design failures; 
the effects of adverse weather conditions; 
availability of financing; 
the ability to obtain and comply with permits and land use rights, and environmental constraints; 
delays and costs associated with disputes and litigation with third parties; and 
changes in applicable laws or regulations.  

If Idaho Power is unable to complete the construction of a project, or incurs costs that regulators do not deem prudent, it may be 
unable to recover its costs in full through rates or on a timely basis.  Further, if Idaho Power is unable to secure permits or joint 
funding commitments to develop transmission infrastructure necessary to serve loads, it may terminate those projects and, as an 
alternative, seek to develop additional generation facilities within areas where Idaho Power has available transmission capacity 
or pursue other more costly options to serve loads.  To limit the timing-related risks of these projects, Idaho Power may enter 
into purchase orders and construction contracts and incur engineering and design service costs in advance of receiving 
necessary regulatory approvals or permits.  If any of the projects are canceled for any reason, including Idaho Power's failure to 
receive necessary regulatory approvals or permits or because the project is no longer economical, Idaho Power could incur 
significant cancellation penalties under purchase orders or construction contracts.  Additionally, termination of a project carries 
with it the potential for impairment of the associated asset if regulators deny full recovery of project costs.  Thus, termination of 
a project could negatively affect IDACORP's and Idaho Power's financial condition and results of operations.

IDACORP's and Idaho Power’s businesses are subject to an extensive set of environmental laws, rules, and regulations, 
which could impact their operations and increase costs of operations, potentially rendering some generating units 
uneconomical to maintain or operate, and could increase the costs and alter the timing of major projects.  A number of 
federal, state, and local environmental statutes, rules, and regulations relating to air and water quality, natural resources, 

21

 
 
 
 
 
 
 
 
 
renewable energy certificates, and health and safety are applicable to IDACORP's and Idaho Power's operations.  Many of these 
laws and regulations are described in Part II - Item 7 - "Management's Discussion and Analysis of Financial Condition and 
Results of Operations - Environmental Matters" in this report.  These laws and regulations generally require IDACORP and 
Idaho Power to obtain and comply with a wide variety of environmental licenses, permits, and other approvals, including 
through substantial investment in pollution controls, and may be enforced by both public officials and private 
individuals.  Some of these regulations are pending, changing, or subject to interpretation, and failure to comply may result in 
penalties, mandatory operational changes, and other adverse consequences, including costs associated with defending against 
claims by governmental authorities or private parties and complying with new operating requirements.  Idaho Power devotes 
significant resources to environmental monitoring, pollution control equipment, and mitigation projects to comply with existing 
and anticipated environmental regulatory requirements.  However, the current trend is toward more stringent standards, stricter 
regulation, and more expansive application of environmental regulations.  

Environmental regulations have created the need for Idaho Power to install new pollution control equipment at, and may cause 
Idaho Power to perform environmental remediation on, its owned and co-owned power generation facilities, often at a 
substantial cost.  For instance, Idaho Power is installing environmental control apparatus in two units of its co-owned Jim 
Bridger power plant at an estimated cost of $105 million, and may install a second set of control apparatus at two other units at 
that plant in or around 2021 and 2022.  IDACORP and Idaho Power will incur other costs associated with existing 
environmental regulations, and the companies expect to incur additional costs associated with pending and future 
environmental regulations, and those costs are likely to be substantial.  In some cases, the costs to obtain permits and ensure 
facilities are in compliance may be prohibitively expensive.  If the costs of compliance with those new regulations renders the 
generating facilities uneconomical to maintain or operate, Idaho Power would need to identify alternative resources for power, 
potentially in the form of new generation and transmission facilities, market power purchases, demand-side management 
programs, or a combination of these and other methods.  Furthermore, Idaho Power may not be able to obtain or maintain all 
environmental regulatory approvals necessary for operation of its existing infrastructure or construction of new infrastructure.  

Idaho Power is not guaranteed timely or full recovery through customer rates of costs associated with environmental 
regulations, environmental compliance, and clean-up of contamination, and regulators may not grant prior approval of cost 
recovery.  For example, in 2013 the IPUC declined to approve Idaho Power's application requesting a binding commitment to 
provide rate base treatment for Idaho Power's estimated share of the capital investment in environmental control upgrades at the 
Jim Bridger power plant, instead reserving the prudence determination (and thus ratemaking treatment) for subsequent 
proceedings.  If there is a delay in obtaining any required environmental regulatory approval or if Idaho Power fails to obtain, 
maintain, or comply with any such approval, construction and/or operation of Idaho Power's generation or transmission 
facilities could be delayed, halted, or subjected to additional costs. 

Factors contributing to lower hydroelectric generation can increase costs and negatively impact IDACORP's and Idaho 
Power's financial condition and results of operations.  Idaho Power derives a significant portion of its power supply from its 
hydroelectric facilities.  During 2015, 47 percent of Idaho Power's electric power generation was from hydroelectric facilities.  
Because of Idaho Power’s heavy reliance on hydroelectric generation, factors such as precipitation and snow pack, the timing of 
run-off, and the availability of water in the Snake River basin can significantly affect its operations.  The combination of a long-
term trend of declining Snake River base flows, over-appropriation of water, and periods of drought have led to water rights 
disputes and proceedings among surface water and ground water irrigators and the State of Idaho.  Recharging the Eastern 
Snake Plain aquifer by diverting surface water to porous locations and permitting it to sink into the aquifer is one approach to 
the over-appropriation dispute.  Diversions from the Snake River for aquifer recharge or the loss of water rights reduce Snake 
River flows available for hydroelectric generation.  When hydroelectric generation is reduced, Idaho Power must increase its 
use of more expensive thermal generating resources and market power purchases; therefore, costs increase and opportunities for 
off-system sales are reduced, reducing revenues and potentially earnings.  Through its power cost adjustment mechanisms, 
Idaho Power expects to recover most (but not all) of the increase in net power supply costs caused by lower hydroelectric 
generation.  The timing of recovery of the increased costs, however, may not occur until the subsequent power cost adjustment 
year, adversely affecting cash flows and liquidity.

Obligations imposed in connection with hydroelectric license renewals may require large capital expenditures, increase 
operating costs, reduce hydroelectric generation, and negatively affect IDACORP's or Idaho Power's results of operations 
and financial condition.  For the last several years, Idaho Power has been engaged in an effort to renew its federal license for 
its largest hydroelectric generation source, the Hells Canyon Complex.  Relicensing includes an extensive public review 
process that involves numerous natural resource issues and environmental conditions.  The existence of endangered and 
threatened species in the watershed may result in major operational changes to the region’s hydroelectric projects, which may 
be reflected in hydroelectric licenses, including for the Hells Canyon Complex.  In addition, new interpretations of existing 
laws and regulations could be adopted or become applicable to hydroelectric facilities, which could further increase required 

22

 
 
 
 
 
 
 
 
 
expenditures for marine life recovery and endangered species protection and reduce the amount of hydroelectric generation 
available to meet Idaho Power’s generation requirements.  One particularly significant issue identified in connection with the 
Hells Canyon Complex relicensing effort involves water temperature gradients in the Snake River below the Hells Canyon 
dam.  Certain parties in the relicensing proceedings have advocated for the installation of a water temperature management 
apparatus which, if required to be installed, would involve substantial costs to construct, operate, and maintain.  Idaho Power 
may be unable to recover in full or in a timely manner the costs of such an apparatus through rates, particularly given the 
magnitude of any potential impact on customer rates.  Idaho Power also cannot predict the requirements that might be imposed 
during the relicensing process, the financial impact of those requirements, whether a new multi-year license will ultimately be 
issued, and whether the IPUC or OPUC will allow recovery through rates of the substantial costs incurred in connection with 
the licensing process and subsequent compliance.  Imposition of onerous conditions in the relicensing process could result in 
Idaho Power incurring significant capital expenditures, increase operating costs (including power purchase costs), and reduce 
hydroelectric generation, which could negatively affect results of operations and financial condition.

Idaho Power’s use of coal and natural gas to fuel power generation facilities exposes it to commodity availability and price 
risk, which can adversely affect IDACORP's and Idaho Power's results of operations and financial condition.  As part of its 
normal business operations, Idaho Power purchases coal and natural gas in the open market or under short-term or long-term 
contracts, often with variable pricing terms.  Market prices for coal and natural gas are influenced by factors impacting supply 
and demand such as weather conditions, fuel transportation availability, economic conditions, and changes in technology.  
Natural gas transportation to Idaho Power's three natural gas plants is limited to one primary pipeline, presenting a heightened 
possibility of supply constraint and disruptions separate from the risk of counterparty default.  Most of Idaho Power's coal 
supply arrangements are under long-term contracts for coal originating in Wyoming, and thus Idaho Power is exposed to risk of 
disruption of coal production in, or transportation from, that region.  Idaho Power may from time to time enter into new, or 
renegotiate, these long-term contracts but can provide no assurance that such contracts will be negotiated or renegotiated on 
satisfactory terms, or at all.  There also can be no assurance that counterparties to the natural gas or coal supply agreements will 
fulfill their obligations to supply natural gas or coal, and they may experience financial or technical problems that inhibit their 
ability to deliver natural gas or coal.  Defaults by coal and natural gas suppliers may cause Idaho Power to seek alternative, and 
potentially more costly, sources of fuel or rely on other generation sources or wholesale market power purchases.  Idaho Power 
may not be able to fully or timely recover these increased costs through rates, which may adversely affect IDACORP's and 
Idaho Power's financial condition and results of operations. 

Idaho Power’s generation, transmission, and distribution facilities are subject to numerous operational risks unique to it 
and its industry.  Operating risks associated with Idaho Power's generation, transmission, and distribution facilities include 
equipment failures, volatility in fuel and transportation pricing, interruptions in fuel supplies, increased regulatory compliance 
costs, labor disputes, accidents and workforce safety matters, release of hazardous or toxic substances into the air, water, or 
ground, acts of terrorism or sabotage, the loss of cost-effective disposal options for solid waste such as coal ash, operator error, 
and the occurrence of catastrophic events at the facilities.  Diminished availability or performance of those facilities could result 
in reduced customer satisfaction, reputational harm, and regulatory inquiries and fines.  Operation of Idaho Power's owned and 
co-owned generating stations below expected capacity levels, or unplanned outages at these stations, could cause reduced 
energy output and lower efficiency levels and result in lost revenues and increased expenses for alternative fuels or wholesale 
market power purchases.  Accidents, electrical contacts, fires, explosions, catastrophic failures, general system damage or 
dysfunction, and other unplanned events related to Idaho Power's infrastructure would increase repair costs and may expose 
Idaho Power to claims for personal injury and property damage.  Further, the transmission system in Idaho Power's service 
territory is constrained, limiting the ability to transmit electric energy within the service territory and access electric energy 
from outside the service territory during high-load periods.  Idaho Power's transmission facilities are also interconnected with 
those of third parties, and thus operation of Idaho Power's and third parties' facilities could be adversely affected by unexpected 
or uncontrollable events.  These transmission constraints and events could result in failure to provide reliable service to 
customers and the inability to deliver energy from generating facilities to the power grid, or not being able to access lower cost 
sources of electric energy, which could have a negative effect on IDACORP's and Idaho Power's financial condition and results 
of operations.  

Volatility in the financial markets, failure of IDACORP or Idaho Power to satisfy conditions necessary for obtaining loans 
or issuing debt securities, and denial of regulatory authority to issue debt or equity securities may negatively affect 
IDACORP’s and Idaho Power’s ability to access capital and/or increase their cost of borrowing.  IDACORP and Idaho 
Power use credit facilities, commercial paper markets, and long-term debt as significant sources of liquidity and funding for 
operating and capital requirements and debt maturities not satisfied by operating cash flow.  The credit facilities represent 
commitments by the participating banks to make loans and issue letters of credit.  However, the obligation of the participating 
banks to make those loans and issue letters of credit is subject to specified conditions.  Idaho Power's ability to issue long-term 
debt is also subject to a number of conditions included in an indenture, and Idaho Power's ability to issue long-term debt and 

23

 
 
 
 
 
 
 
 
 
commercial paper is subject to the availability of purchasers willing to purchase the securities under reasonable terms or at all.  
Because of these limitations, IDACORP and Idaho Power may be unable to issue commercial paper or short-term or long-term 
debt at reasonable interest rates and terms or at all.  Also, while the credit facilities represent a contractual obligation to make 
loans, one or more of the participating banks may default on their obligations to make loans under, or may withdraw from, the 
credit facilities. 

Idaho Power is required to obtain regulatory approval in Idaho, Oregon, and Wyoming in order to borrow money or to issue 
securities and is therefore dependent on the public utility commissions of those states to issue favorable orders in a timely 
manner to permit them to finance their operations, capital expenditures, and debt maturities.  Without additional state regulatory 
approval, as of the date of this report the aggregate amount of short-term borrowings by Idaho Power at any one time 
outstanding may not exceed $450 million.  Also, IDACORP's and Idaho Power's credit facilities include financial covenants 
that limit the amount of debt that can be outstanding as a percentage of total capital, and Idaho Power's long-term debt has also 
been issued under an indenture that contains a number of financial covenants.  Failure to maintain these covenants could 
preclude IDACORP and Idaho Power from issuing commercial paper, borrowing under their credit facilities, or issuing long-
term debt, and could trigger a default and repayment obligation under debt instruments, which could adversely impact 
IDACORP's and Idaho Power's financial condition, results of operations, and liquidity.  

A downgrade in IDACORP’s and Idaho Power’s credit ratings could affect the companies’ ability to access capital, increase 
their cost of borrowing, and require the companies to post collateral with transaction counterparties.  Credit rating agencies 
periodically review the corporate credit ratings and long-term ratings of IDACORP and Idaho Power.  These ratings are 
premised on financial ratios and performance, the regulatory environment and rate mechanisms, the effectiveness of 
management, resource risks and power supply costs, and other factors.  IDACORP and Idaho Power also have borrowing 
arrangements that rely on the ability of the banks to fund loans or support commercial paper, a principal source of short-term 
financing.  Downgrades of IDACORP’s or Idaho Power’s credit ratings, or those affecting relationship banks, could limit the 
companies’ ability to access short- and long-term capital under reasonable terms or at all, require the companies to pay a higher 
interest rate on their debt, and require the companies to post additional performance assurance collateral with transaction 
counterparties.

Idaho Power’s risk management policy and programs relating to economically hedging commodity exposures and credit risk 
may not always perform as intended, and as a result IDACORP and Idaho Power may suffer economic losses.  Idaho Power 
enters into transactions to hedge its positions in coal, natural gas, power, and other commodities, and enters into financial hedge 
transactions to mitigate in part exposure to variable commodity prices.  IDACORP and Idaho Power could recognize financial 
losses as a result of volatility in the market value of these contracts or if a counterparty fails to perform.  The derivative 
instruments used for hedging might not offset the underlying exposure being mitigated as intended, due to pricing inefficiencies 
or other terms of the derivative instruments, and any such failure to mitigate exposure could result in financial losses.  Certain 
of Idaho Power's hedging and derivative agreements may result in the receipt of, or posting of, collateral with counterparties.  
Fluctuations in commodity prices that lead to the posting of collateral with counterparties negatively impact liquidity, and 
downgrades in Idaho Power's credit ratings may lead to additional collateral posting requirements.  Further, forecasts of future 
fuel needs and loads and available resources to meet those loads are inherently uncertain and may cause Idaho Power to over- 
or under-hedge actual resource needs, exposing the company to market risk on the over- or under-hedged position.  To the 
extent that commodity markets are illiquid, Idaho Power may not be able to execute its risk management strategies, which could 
result in undesired over-exposure to unhedged positions.  As a result, risk management actions, or the failure or inability to 
manage commodity price and counterparty risk, may adversely affect IDACORP’s and Idaho Power’s financial condition and 
results of operations.  

Idaho Power could be subject to penalties and operational changes if it violates mandatory reliability and security 
requirements, which could adversely impact IDACORP's and Idaho Power's results of operations and financial condition.  
As an owner and operator of a bulk power transmission system, Idaho Power is subject to mandatory reliability standards issued 
by the North American Electric Reliability Corporation and enforced by the FERC.  The standards are based on the functions 
that need to be performed to ensure the bulk power system operates reliably and are guided by reliability and market interface 
principles.  Compliance with reliability standards subjects Idaho Power to higher operating costs and increased capital 
expenditures.  Idaho Power has received in recent years notices of violations from, and regularly self-reports reliability standard 
compliance issues to, the FERC, the North American Electric Reliability Corporation, and the Western Electricity Coordinating 
Council.  Potential monetary and non-monetary penalties for a violation of FERC regulations may be substantial, and in some 
circumstances monetary penalties may be as high as $1 million per day per violation.  The imposition of penalties on Idaho 
Power for its actual or alleged failure to comply with reliability and security requirements could have a negative effect on its 
and IDACORP’s results of operations and financial condition.    

24

 
 
 
 
 
 
 
 
 
 
Federally mandated purchases of power from renewable energy projects, and integration of power generated from those 
projects into Idaho Power's system, may increase costs and decrease system reliability, and adversely affect Idaho Power's 
and IDACORP's results of operations and financial condition.  An abundance of intermittent, non-dispatchable generation 
from renewable energy projects interconnected with Idaho Power's system has had an impact on the operation of Idaho Power's 
generation plants, system reliability, power supply costs, and the wholesale power markets in the Pacific Northwest.  Idaho 
Power is generally obligated under federal law to purchase power from certain renewable energy projects, regardless of the 
then-current load demand, availability of lower cost generation resources, or wholesale energy market prices.  This increases 
the likelihood and frequency that Idaho Power will be required to reduce output from its lower-cost hydroelectric and fossil 
fuel-fired generation resources, which in turn increases power purchase costs and customer rates.  Further, balancing load and 
generation from Idaho Power's power generation portfolio is challenging, and Idaho Power expects that its operational costs 
will continue to increase as a result of its efforts to integrate intermittent, non-dispatchable generation from a large number of 
renewable energy projects.  If Idaho Power is unable to timely recover those costs through its power cost adjustment 
mechanisms or otherwise, those increased costs may negatively affect IDACORP's and Idaho Power's results of operations, 
financial condition, and cash flows. 

The performance of pension and postretirement benefit plan investments and other factors impacting plan costs and funding 
obligations could adversely affect IDACORP's and Idaho Power's financial condition and results of operations - primarily 
cash flows and liquidity.  Idaho Power provides a noncontributory defined benefit pension plan covering most employees, as 
well as a defined benefit postretirement benefit plan (consisting of health care and death benefits) that covers eligible retirees.  
Costs of providing these benefits are based in part on the value of the plans' assets and, therefore, adverse investment 
performance for these assets could increase Idaho Power’s plan costs and funding requirements related to the plans.  The key 
actuarial assumptions that affect funding obligations are the expected long-term return on plan assets and the discount rate used 
in determining future benefit obligations.  Idaho Power evaluates the actuarial assumptions on an annual basis, taking into 
account changes in market conditions, trends, and future expectations.  Estimates of future equity and debt market performance, 
changes in interest rates, and other factors Idaho Power and its actuary firms use to develop the actuarial assumptions are 
inherently uncertain, and actual results could vary significantly from the estimates.  Changes in demographics, including timing 
of retirements or changes in life expectancy assumptions, may also increase Idaho Power's plan costs and funding requirements.  
Future pension funding requirements and the timing of funding payments are also subject to the impacts of changes in 
legislation.  Depending on the timing of contributions to the plans and Idaho Power's ability to recover costs through rates, cash 
contributions to the plans could reduce the cash available for the companies' businesses and payment of dividends.  For 
additional information regarding Idaho Power's funding obligations under its benefit plans, see Note 11 - "Benefit Plans" to the 
consolidated financial statements included in this report.   

As a holding company, IDACORP does not have its own operating income and must rely on the cash flows from its 
subsidiaries to pay dividends and make debt payments.  IDACORP is a holding company with no significant operations of its 
own, and its primary assets are shares or other ownership interests of its subsidiaries, primarily Idaho Power.  IDACORP’s 
subsidiaries are separate and distinct legal entities and have no obligation to pay any amounts to IDACORP, whether through 
dividends, loans, or other means.  The ability of IDACORP’s subsidiaries to pay dividends or make distributions to IDACORP 
depends on several factors, including each subsidiary's actual and projected earnings and cash flow, capital requirements and 
general financial condition, regulatory restrictions, covenants contained in credit facilities to which they are parties, and the 
prior rights of holders of their existing and future first mortgage bonds and other debt or equity securities.  Further, the amount 
and payment of dividends is at the discretion of the board of directors, which may reduce or cease payment of dividends at any 
time.  See Note 6 - "Common Stock" to the consolidated financial statements included in this report for a further description of 
restrictions on IDACORP's and Idaho Power's payment of dividends. 

IDACORP's and Idaho Power's activities are concentrated in one industry and in one region, which exposes it to risks from 
lack of diversification, regional economic conditions, and regional legislation and regulation.  IDACORP and Idaho Power 
do not have diversified operations or sources of revenue.  Idaho Power comprises the bulk of IDACORP's operations, and Idaho 
Power's business is concentrated solely in the electricity industry.  Furthermore, Idaho Power's provision of electric service to 
retail customers is conducted exclusively in its southern Idaho and eastern Oregon service area.  As a result, IDACORP's and 
Idaho Power's future performance will be affected by economic conditions, regulatory and legislative activity, and other events 
in its service area and in the electric power industry. 

25

 
 
 
 
 
 
 
 
 
 
The impacts of a retiring workforce with specialized utility-specific functions could increase costs and adversely affect 
IDACORP's and Idaho Power's financial condition and results of operations.  Idaho Power’s operations require a skilled 
workforce to perform specialized utility functions.  Many of these positions, such as linemen, grid operators, and generation 
plant operators, require extensive, specialized training.  Idaho Power has experienced in recent years an above-average number 
of employee retirements and expects the increased level of retirement of its skilled workforce and persons in key positions will 
continue in 2016 and in the near-term.  This will require Idaho Power to attract, train, and retain new employees to help prevent 
a loss of institutional knowledge and avoid a skills gap.  The loss of skills and institutional knowledge of experienced 
employees and the costs associated with attracting, training, and retaining appropriately qualified employees to replace an aging 
and skilled workforce could have a negative effect on IDACORP's and Idaho Power's financial condition and results of 
operations.

IDACORP and Idaho Power are subject to costs and other effects of legal and regulatory proceedings, disputes, and claims.  
From time to time in the normal course of business IDACORP and Idaho Power are subject to various lawsuits, regulatory 
proceedings, disputes, and claims that could result in adverse judgments or settlements, fines, penalties, injunctions, or other 
adverse consequences.  These matters are subject to a number of uncertainties, and as a result management is often unable to 
predict the outcome of a matter.  Two notable existing legal proceedings are described in Note 10 - "Contingencies" to the 
consolidated financial statements included in this report.  The legal costs and final resolution of matters in which IDACORP or 
Idaho Power are involved could have a negative effect on their financial condition and results of operations.  Similarly, the 
terms of resolution could require the companies to change their operational practices and procedures, which could also have a 
negative effect on their financial positions and results of operations.

Acts or threats of terrorism, cyber attacks, data or physical security breaches, and other acts of individuals or groups seeking 
to disrupt Idaho Power's operations or the electric power grid could negatively impact IDACORP's and Idaho Power's 
financial condition and results of operations.  Idaho Power operates in an industry that requires the continuous use and 
operation of sophisticated information technology systems and network infrastructure.  Idaho Power's generation and 
transmission facilities and its grid operations are potential targets for terrorist acts and threats, as well as cyber attacks and other 
disruptive activities of individuals or groups.  Some of Idaho Power's facilities are deemed "critical infrastructure," in that 
incapacity or destruction of the facilities could have a debilitating impact on security, reliability or operability of the bulk 
electric power system, national economic security, and public health and safety.  The possibility that infrastructure facilities, 
such as generation facilities and electric transmission facilities, would be direct targets of, or indirect casualties of, an act of 
terror or cyber attack (whether originating internally or externally) may affect Idaho Power's operations by limiting the ability 
to generate, purchase, or transmit power.  These events, and governmental actions in response, could result in a material 
decrease in revenues and increase costs to protect, repair, and insure Idaho Power's assets and operate its business.  

Federal regulators have stated that a number of organizations continue to seek opportunities to exploit potential vulnerabilities 
in the U.S. energy infrastructure and that those attacks have become increasingly sophisticated.  Attacks on Idaho Power's 
infrastructure could result from acts of those organizations or other third parties as well as Idaho Power employees or 
contractors.  At the same time, Idaho Power's energy infrastructure is becoming more reliant on network-based infrastructure.  
Idaho Power's operations require the continuous availability of information technology systems and network infrastructure, and 
in the normal course of business Idaho Power collects sensitive and confidential customer and employee information and 
proprietary information of Idaho Power.  Although Idaho Power actively monitors developments in cyber security, no security 
measures can completely shield Idaho Power's systems, infrastructure, and data from vulnerabilities to cyber attacks, intrusions, 
or other catastrophic events that could result in their failure or reduced functionality, and ultimately the potential loss of 
sensitive information or the loss of Idaho Power's ability to fulfill critical business functions and provide reliable electric power 
to customers.  The loss of data could result in violations of privacy and other laws, financial loss to Idaho Power or to its 
customers, customer dissatisfaction, and significant litigation exposure, all of which could materially affect Idaho Power's 
financial condition and results of operations.

Changes in tax laws and regulations, or differing interpretation or enforcement of applicable laws by the Internal Revenue 
Service or other taxing jurisdictions, could have a material adverse impact on IDACORP’s or Idaho Power’s financial 
condition and results of operations.  IDACORP and Idaho Power must make judgments and interpretations about the 
application of the law when determining the provision for taxes.  Amounts of tax-related assets and liabilities involve judgments 
and estimates of the timing and probability of recognition of income, deductions, and tax credits, which are subject to challenge 
by taxing authorities.  In recent years, tax settlements, as well as state regulatory mechanisms with tax-related provisions (such 
as Idaho Power's October 2014 regulatory settlement stipulation with the IPUC), has significantly impacted IDACORP's and 
Idaho Power's results of operations.  The outcome of ongoing and future income tax proceedings, or the state public utility 
commissions' treatment of those tax outcomes, could differ materially from the amounts IDACORP and Idaho Power record 
prior to conclusion of those proceedings, and the difference could negatively affect IDACORP’s and Idaho Power’s earnings 

26

 
 
 
 
 
 
 
 
 
 
and cash flows.  Further, in some instances the treatment from a ratemaking perspective of any tax benefits could be different 
than IDACORP or Idaho Power anticipate or request from applicable state regulatory commissions, which could have a 
negative effect on their financial condition and results of operations.

Changes in accounting standards or rules may impact IDACORP's and Idaho Power's financial results and disclosures.  
The Financial Accounting Standards Board and the Securities and Exchange Commission may make changes to accounting 
standards that impact presentation and disclosures of financial condition and results of operations.  Further, new accounting 
orders issued by the FERC could significantly impact IDACORP's and Idaho Power's reported financial condition.  Idaho 
Power meets conditions under generally accepted accounting principles to reflect the impact of regulatory decisions in its 
financial statements and to defer certain costs as regulatory assets until those costs are collected in rates, and to defer some 
items as regulatory liabilities.  If recovery of these amounts ceases to be probable, if Idaho Power determines that it no longer 
meets the criteria for applying regulatory accounting, or if accounting rules change to no longer provide for regulatory assets 
and liabilities, Idaho Power could be required to eliminate some or all of those regulatory assets or liabilities.  Any of these 
circumstances could result in write-offs and have a material effect on IDACORP's and Idaho Power’s financial condition and 
results of operations.

None.

ITEM 1B.  UNRESOLVED STAFF COMMENTS

ITEM 2.  PROPERTIES

Idaho Power's properties consist of the physical assets necessary to support its utility operations, which include generation, 
transmission, and distribution facilities, as well as coal assets that support one of its coal-fired generation plants.  In addition to 
these physical assets, Idaho Power has rights-of-way and water rights that enable it to use its facilities.  Idaho Power’s system is 
comprised of 17 hydroelectric generating plants located in southern Idaho and eastern Oregon, three natural gas-fired plants in 
southern Idaho, and interests in three coal-fired steam electric generating plants located in Wyoming, Nevada, and Oregon.  As 
of December 31, 2015, the system also includes approximately 4,860 pole-miles of high-voltage transmission lines, 24 step-up 
transmission substations located at power plants, 24 transmission substations, 10 switching stations, 224 energized distribution 
substations (excluding mobile substations and dispatch centers), and approximately 27,092 pole-miles of distribution lines.

27

 
 
 
 
 
 
 
 
 
 
 
 
Idaho Power holds FERC licenses for all of its hydroelectric projects that are subject to federal licensing.  Relicensing of Idaho 
Power’s hydroelectric projects is discussed in Item 7 - MD&A – "Regulatory Matters – Relicensing of Hydroelectric Projects.” 
Idaho Power's hydroelectric projects and other owned and co-owned generating facilities and their nameplate capacities are 
included in the table below. 

Project
Hydroelectric Projects:

Properties Subject to Federal Licenses:

Lower Salmon
Bliss
Upper Salmon
Shoshone Falls
CJ Strike
Upper Malad - Lower Malad
Brownlee - Oxbow - Hells Canyon (Hells Canyon Complex)

Swan Falls
American Falls
Cascade
Milner
Twin Falls

Other Hydroelectric:

Clear Lakes - Thousand Springs

Total Hydroelectric

Steam and Other Generating Plants:

Jim Bridger (coal-fired)(3)
North Valmy (coal-fired)(3)
Boardman (coal-fired)(3)(4)
Danskin (gas-fired)
Langley Gulch (gas-fired)
Bennett Mountain (gas-fired)
Salmon (diesel-internal combustion)

Total Steam and Other

Total Generation

Nameplate 
Capacity (kW)(1)

License
Expiration

2034  
2034  
2034  
2034  
2034  
2035  
2005 (2)
2042
2025  
2031  
2038  
2040  

60,000
75,000
34,500
12,500
82,800
21,770
1,166,900

27,170
92,340
12,420
59,448
52,897

11,300
1,709,045

770,501
283,500
64,200
270,900
318,452
172,800
5,000
1,885,353
3,594,398

(1) Actual generation capacity from a facility may be greater or less than the rated nameplate generation capacity.
(2) Licensed on an annual basis while the application for a new multi-year license is pending.
(3) Idaho Power’s ownership interests are 33 percent for Jim Bridger, 50 percent for Valmy, and 10 percent for Boardman.  Amounts shown represent Idaho 
Power’s share.
(4) Pursuant to an Oregon Environmental Quality Commission plan and associated rules, the Boardman power plant is scheduled for cessation of coal-fired 
operations by December 31, 2020.

IDACORP's and Idaho Power's headquarters are located in Boise, Idaho.  The corporate headquarters campus is comprised of 
approximately 306,000 square feet of owned office space.  Excluding Idaho Power's power generation facilities and substations, 
Idaho Power owns an additional 907,000 square feet of office, warehouse, and industrial space to support its operations in 
Idaho and Oregon.

Idaho Power owns all of its interests in principal plants and other important units of real property, except for portions of certain 
projects licensed under the FPA and reservoirs and other easements.  Substantially all of Idaho Power’s property is subject to 
the lien of its Mortgage and Deed of Trust and the provisions of its project licenses.  Idaho Power’s property is subject to minor 
defects common to properties of such size and character that it believes do not materially impair the value to, or the use by, 
Idaho Power of such properties.  Idaho Power considers its properties to be well-maintained and in good operating condition.

Through Idaho Energy Resources Co., Idaho Power owns a one-third interest in BCC and coal leases near the Jim Bridger 
generating plant in Wyoming from which coal is mined and supplied to the plant.  Ida-West holds 50-percent interests in nine 
hydroelectric plants that have a total generating capacity of 45 MW.  These plants are located in Idaho and California.

28

 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
   
   
 
   
   
   
   
   
   
   
 
 
 
Refer to Note 10 – “Contingencies” to the consolidated financial statements included in this report.

ITEM 3.  LEGAL PROCEEDINGS

ITEM 4.  MINE SAFETY DISCLOSURES

Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall 
Street Reform and Consumer Protection Act and Item 104 of Regulation S-K (17 CFR 229.104) is included in Exhibit 95.1 of 
this report.

PART II

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

IDACORP’s common stock, without par value, is traded on the New York Stock Exchange (NYSE).  On February 12, 2016, 
there were 10,448 holders of record of IDACORP common stock and the closing stock price was $69.59 per share.  The 
outstanding shares of Idaho Power’s common stock, $2.50 par value, are held by IDACORP and are not traded.  IDACORP 
became the holding company of Idaho Power on October 1, 1998.

IDACORP and Idaho Power paid dividends of $97 million, $89 million, and $79 million in 2015, 2014, and 2013, respectively.
The amount and timing of dividends paid on IDACORP’s common stock are within the discretion of IDACORP’s board of 
directors, subject to other restrictions.  The board of directors reviews the dividend rate quarterly to determine its 
appropriateness in light of IDACORP’s current and long-term financial position and results of operations, capital requirements, 
rating agency requirements, contractual and regulatory restrictions, legislative and regulatory developments affecting the 
electric utility industry in general and Idaho Power in particular, competitive conditions, and any other factors the board of 
directors deems relevant.  The ability of IDACORP to pay dividends on its common stock is dependent upon dividends paid to 
it by its subsidiaries, primarily Idaho Power. The IDACORP board of directors has a dividend policy for IDACORP that 
provides for a target long-term dividend payout ratio of between 50 and 60 percent of sustainable IDACORP earnings, with the 
flexibility to achieve that payout ratio over time and to adjust the payout ratio or to deviate from the target payout ratio from 
time to time based on the various factors that drive the board of director's dividend decisions.  IDACORP's 2015 calendar year 
payout ratio was 50 percent.  Notwithstanding the dividend policy adopted by IDACORP's board of directors, the dividends 
IDACORP pays remain in the discretion of the board of directors who, when evaluating the dividend amount, will take into 
account the foregoing factors, among others. 

IDACORP's and Idaho Power's payment of dividends is subject to a number of restrictions.  For information relating to those 
restrictions, see Note 6 - “Common Stock” to the consolidated financial statements included in this report.

The following table shows the reported high and low sales price of IDACORP’s common stock and dividends paid for 2015 and 
2014 as reported by the NYSE:

Quarter
1st
2nd
3rd
4th

$

High

$

70.48
64.22
64.94
70.33

2015

Low

Dividends paid
per share

High

2014

Low

Dividends paid
per share

$

59.21
55.40
55.96
63.38

$

0.47
0.47
0.47
0.51

$

56.65
57.86
58.79
70.05

$

50.21
52.91
51.70
53.39

0.43
0.43
0.43
0.47

IDACORP did not repurchase any shares of its common stock during the fourth quarter of 2015.

Performance Graph

The graph below shows a comparison of the five-year cumulative total shareholder return for IDACORP common stock, the 
S&P 500 Index, and the Edison Electric Institute (EEI) Electric Utilities Index.  The data assumes that $100 was invested on 
December 31, 2010, with beginning-of-period weighting of the peer group indices (based on market capitalization) and monthly 
compounding of returns.

29

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Source:  Bloomberg and EEI

2010

2011

2012

2013

2014

2015

IDACORP

S&P 500

EEI Electric Utilities Index

$

100.00

$

118.25

$

124.96

$

154.34

$

203.17

$

100.00

100.00

102.08

119.99

118.39

122.49

156.70

138.42

178.10

178.44

215.24

180.56

171.48

The foregoing performance graph and data shall not be deemed “filed” as part of this Form 10-K for purposes of Section 18 of 
the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section and shall not be deemed incorporated 
by reference into any other filing of IDACORP or Idaho Power under the Securities Act of 1933 or the Securities Exchange Act 
of 1934, except to the extent IDACORP or Idaho Power specifically incorporates it by reference into such filing.

30

 
 
 
 
 
 
 
 
 
 
ITEM 6.  SELECTED FINANCIAL DATA

IDACORP, Inc.
SUMMARY OF OPERATIONS
(thousands of dollars, except per share amounts and statistics)

Operating revenues
Operating income
Net income attributable to IDACORP, Inc.
Diluted earnings per share

Dividends declared per share

Financial Condition:
Total assets (1)
Long-term debt (including current portion) (1)

Financial Statistics:
Times interest charges earned:
Before tax(2)
After tax(3)
Book value per share(4)
Market-to-book ratio (5)
Payout ratio (6)
Return on year-end common equity (7)

2015
$1,270,289
282,097
194,679
3.87
1.92

2014
$1,282,524
253,696
193,480
3.85
1.76

2013
$1,246,214
291,742
182,417
3.64
1.57

2012
$1,080,662
242,602
173,014
3.46
1.37

2011
$1,026,756
155,352
169,981
3.43
1.20

$6,023,314

$5,701,037

$5,347,380

$5,274,147

$4,908,326

$1,726,474

$1,599,686

$1,599,139

$1,520,553

$1,471,621

3.61
3.12
40.88

$

3.38
3.19
38.85

$

3.87
3.06
36.84

$

3.41
3.02
34.73

$

$

166%
50%
9.5%

170%
46%
9.9%

141%
43%
9.9%

125%
40%
9.9%

2.48
3.00
32.76

129%
35%
10.4%

(1) 

Adjusted to reflect the adoption of ASU 2015-03.  See Note 1 to the consolidated financial statements included in this report.

The financial statistics listed above are calculated in the following manner:
(2) 

The sum of interest on long-term debt, other interest expense excluding AFUDC credits, and income before income taxes divided by the sum of interest on 

long-term debt and other interest expense excluding AFUDC credits.
(3) 

The sum of interest on long-term debt, other interest expense excluding AFUDC credits, and income from continuing operations divided by the sum of 

interest on long-term debt and other interest expense excluding AFUDC credits.
(4) Total equity, excluding non-controlling interests, at the end of the year divided by shares outstanding at the end of the year.
(5) The closing price of IDACORP stock on the last day of the year divided by the book value per share, which is described in footnote (4) above.
(6) Dividends paid per common share divided by diluted earnings per share.
(7) 

Net income attributable to IDACORP, Inc. divided by total equity, excluding non-controlling interests, at the end of the year.

31

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

In Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) in this report, the general 
financial condition and results of operations for IDACORP, Inc. and its subsidiaries (collectively, IDACORP) and Idaho Power 
Company and its subsidiary (collectively, Idaho Power) are discussed.  While reading the MD&A, please refer to the 
accompanying consolidated financial statements of IDACORP and Idaho Power.  Also refer to "Cautionary Note Regarding 
Forward-Looking Statements" and Part I - Item 1A - "Risk Factors" in this report for important information regarding forward-
looking statements made in this MD&A and elsewhere in this report.

 In the MD&A, MWh and dollar amounts in tables, other than earnings per share, are in thousands unless otherwise indicated.

INTRODUCTION

IDACORP is a holding company formed in 1998 whose principal operating subsidiary is Idaho Power.  IDACORP’s common 
stock is listed and trades on the New York Stock Exchange under the trading symbol “IDA”.  Idaho Power is an electric utility 
whose rates and other matters are regulated by the Idaho Public Utility Commission (IPUC), Public Utility Commission of 
Oregon (OPUC), and  Federal Energy Regulatory Commission (FERC).  Idaho Power generates revenues and cash flows 
primarily from the sale and distribution of electricity to customers in its Idaho and Oregon service territories, as well as from 
the wholesale sale and transmission of electricity.  Idaho Power experiences its highest retail energy sales during the summer 
irrigation and cooling season, with a lower peak in the winter that generally results from heating demand.  Idaho Power’s rates 
are established through regulatory proceedings that affect its ability to recover its costs and the potential to earn a return on its 
investment. 

Idaho Power is the parent of Idaho Energy Resources Co. (IERCo), a joint venturer in Bridger Coal Company (BCC), which 
mines and supplies coal to the Jim Bridger generating plant owned in part by Idaho Power.  IDACORP’s other subsidiaries 
include IDACORP Financial Services, Inc. (IFS), an investor in affordable housing and other real estate investments; Ida-West 
Energy Company, an operator of small hydroelectric generation projects that satisfy the requirements of the Public Utility 
Regulatory Policies Act of 1978 (PURPA); and IDACORP Energy Services Co., which is the former limited partner of, and 
successor by merger to, IDACORP Energy L.P., a marketer of energy commodities that wound down operations in 2003.  

EXECUTIVE OVERVIEW

Management's Outlook

Idaho Power continues to see positive growth in its customer count and associated positive impacts on Idaho Power's revenue.  
To encourage responsible and sustainable growth, and as part of its planning for the future, Idaho Power actively participates in 
and supports state and local economic development initiatives.  At the same time that Idaho Power pursues customer growth, it 
must also plan for that growth.  Idaho Power's recently completed 2015 Integrated Resource Plan (IRP) assumed growth in 
customers for the next 20 years and seeks to plan for the infrastructure that will support the anticipated growth and allow Idaho 
Power to continue to provide reliable, fair-priced electric power to its customers.  To that end, Idaho Power's noteworthy capital 
projects include the replacement of aging assets, upgrades to generation plants, a multi-year plan for replacement of 
underground conductor, ongoing system upgrades, and continued progress on permitting the Boardman-to-Hemingway and 
Gateway West 500-kV transmission lines.  As of the date of this report, Idaho Power estimates total capital expenditures of 
nearly $1.5 billion over the next five years.

Idaho Power operates within what it believes to be a constructive regulatory framework, achieved through general rate cases, 
subject-specific rate filings, tariff riders, and cost recovery mechanisms that share risks and benefits with Idaho Power's 
customers.  To further complement these efforts, Idaho Power has also been focusing on controlling power supply, operating, 
maintenance, and capital costs through process review and improvement initiatives, and by empowering employees to identify 
new means to reduce costs, increase efficiencies, and enhance individual and enterprise performance for the benefit of 
IDACORP's shareholders, Idaho Power's customers, and other stakeholders.  As Idaho Power's base rates were most recently 
reset in a general rate case in 2012, during 2016 Idaho Power plans to evaluate the desirability of filing an application for a 
general rate change in Idaho or Oregon.

Separately, during 2015 IDACORP continued to make meaningful progress toward its target dividend payout ratio of between 
50 and 60 percent of sustainable IDACORP earnings, which expanded on the progress made in prior years.  From 2012 through 

32

 
 
 
 
 
 
 
 
 
2015, IDACORP's board of directors approved a collective 70 percent increase in the quarterly dividend, from $0.30 to $0.51 
per share.  

2015 Accomplishments and 2016 Initiatives

IDACORP’s business strategy emphasizes Idaho Power as IDACORP’s core business.  For the past several years, Idaho Power 
has been executing its three-part strategy of responsible planning, responsible development and protection of resources, and 
responsible energy use to ensure adequate energy supplies.  This strategy is described in Part I, Item 1 - "Business" of this 
report.  Examples of IDACORP's and Idaho Power's achievements and recognitions during 2015 under its three-part business 
strategy include:

achieved net income growth for an eighth consecutive year;
• 
increased IDACORP's quarterly common stock dividend from $0.47 per share to $0.51 per share; 
• 
• 
executed on business optimization initiatives, focusing on improving operations and controlling expenditures;
•  made continued progress toward the permitting of the Boardman-to-Hemingway and Gateway West 500-kV 

• 

• 

• 

transmission projects;
achieved its goal to reduce average CO2 emissions intensity by 10 to 15 percent below 2005 emissions for the period 
from 2010 through 2015;
achieved the highest rolling 12-month customer relationship index score (Idaho Power's internal measure of customer 
satisfaction) ever recorded by the company; and
improved Idaho Power's ranking from 17 to 11 in the annual "40 Best Energy Companies" list published by Public 
Utilities Fortnightly.

For 2016, in addition to its specific infrastructure and regulatory projects noted above, IDACORP and Idaho Power have 
established a number of organizational initiatives, including the following:

•  make progress on three core focuses for 2016—improving Idaho Power's core business, growing revenues, and 

• 
• 
• 
• 

• 

enhancing the brand and positioning the company for the future;  
continue to enhance and promote Idaho Power’s safety culture; 
grow financial strength by supporting business development in our service territory while actively managing costs;
continue progress toward IDACORP’s target dividend payout ratio;
pursue responsible investments that address customer growth while improving reliability, enhancing Idaho Power 
customers’ experience, increasing shareholder value, and managing carbon impacts; and
integrate new renewable generation resources into Idaho Power’s grid and explore intra-hour market opportunities to 
help achieve greater reliability and improve system dispatch.

Overview of General Factors and Trends Affecting Results of Operations and Financial Condition

IDACORP's and Idaho Power's results of operations and financial condition are affected by a number of factors, and the impact 
of those factors is discussed in more detail later in this MD&A.  To provide context for the discussion elsewhere in this report, 
some of the more notable factors include the following: 

•  Regulation of Rates and Cost Recovery:  The price that Idaho Power is authorized to charge for its electric and 
transmission service is a critical factor in determining IDACORP's and Idaho Power's results of operations and 
financial condition.  Those rates are established by state regulatory commissions and the FERC, and are intended to 
allow Idaho Power an opportunity to recover its expenses and earn a reasonable return on investment.  Because of the 
significant impact of ratemaking decisions, and in furtherance of its goal of advancing a purposeful regulatory strategy, 
Idaho Power has focused on timely recovery of its costs through filings with the company's regulators, working to put 
in place innovative regulatory mechanisms, and on the prudent management of expenses and investments.  Idaho 
Power has a regulatory settlement stipulation in Idaho that remains in effect during 2016.  That stipulation includes 
provisions for the accelerated amortization of certain tax credits to help achieve a minimum 9.5 percent return on year-
end equity in the Idaho jurisdiction (Idaho ROE).  Also during 2016, Idaho Power will continue to assess its need to 
file a general rate case to reset base rates.  

•  Rate Base Growth and Infrastructure Investment:  As noted above, the rates established by the IPUC and OPUC are 
determined so as to provide an opportunity for Idaho Power to recover authorized operating expenses and earn a 
reasonable return on “rate base.”  Rate base is generally determined by reference to the original cost (net of 
accumulated depreciation) of utility plant in service, subject to various adjustments for deferred taxes and other items.  

33

 
 
 
 
 
 
 
 
 
 
Over time, rate base is increased by additions to utility plant in service and reduced by depreciation and retirement of 
utility plant and write-offs as authorized by the IPUC and OPUC.  In recent years, Idaho Power has been pursuing 
significant enhancements to its utility infrastructure, including major ongoing transmission projects such as the 
Boardman-to-Hemingway and Gateway West projects, in an effort to ensure an adequate supply of electricity, to 
provide service to new customers, and to maintain system reliability.  Idaho Power's existing hydroelectric and thermal 
generation facilities also require continuing upgrades and component replacement, and the company is undertaking a 
significant relicensing effort for the Hells Canyon Complex (HCC), its largest hydroelectric generation resource.  
Idaho Power expects to include completed capital projects in its next general rate case or, in circumstances where 
appropriate, a single-issue rate case for individual projects with a significant capital cost.  Depending on the outcome 
of the regulatory process and items such as the rate of return authorized by the IPUC and OPUC, this growth in rate 
base has the potential to increase Idaho Power's revenues and earnings. 

•  Economic Conditions:   Economic conditions impact consumer demand for electricity and revenues, collectability of 

accounts, the volume of off-system sales, and the need to construct and improve infrastructure, purchase power, and 
implement programs to meet customer load demands.  In recent years, Idaho Power has seen growth in the number of 
customers in its service area—in 2015 its customer count grew by 1.8 percent, and employment in Idaho Power's 
service area grew by approximately 4.9 percent in 2015 based on Idaho Department of Labor preliminary December 
2015 data.  Idaho Power expects that the number of customers will continue to increase in the foreseeable future.  To 
help encourage growth, Idaho Power has in recent years undertaken efforts to promote economic development and 
attract industrial and commercial customers to its service area.  

•  Weather Conditions:  Weather and agricultural growing conditions have a significant impact on energy sales and the 
seasonality of those sales.  Relatively low and high temperatures result in greater energy use for heating and cooling, 
respectively.  During the agricultural growing season, which in large part occurs during the second and third quarters, 
irrigation customers use electricity to operate irrigation pumps, and weather conditions can impact the timing and 
degree of use of those pumps.  Idaho Power also has tiered rates and seasonal rates, which contribute to increased 
revenues during higher-load periods, most notably during the third quarter of each year when overall customer demand 
is highest.  Further, as Idaho Power's hydroelectric facilities comprise nearly one-half of Idaho Power's nameplate 
generation capacity, precipitation levels impact the mix of Idaho Power's generation resources.  When hydroelectric 
generation is reduced, Idaho Power must rely on more expensive generation sources and purchased power.  When 
favorable hydroelectric generating conditions exist for Idaho Power, they also may exist for other Pacific Northwest 
hydroelectric facility operators, lowering regional wholesale market prices and impacting the revenue Idaho Power 
receives from off-system sales of its excess power.  Much of the adverse or favorable impact of this volatility is 
addressed through the Idaho and Oregon power cost adjustment (PCA) mechanisms.    

•  Mitigation of Impact of Fuel and Purchased Power Expense:  In addition to hydroelectric generation, Idaho Power 
relies significantly on coal and natural gas to fuel its generation facilities and power purchases in the wholesale 
markets.  Fuel costs are impacted by electricity sales volumes, the terms of contracts for fuel, Idaho Power's generation 
capacity, the availability of hydroelectric generation resources, transmission capacity, energy market prices, and Idaho 
Power's hedging program for managing fuel costs.  Recently, low natural gas prices have made operation of Idaho 
Power's natural gas power plants more economical, resulting in increased operation of those plants and lessened 
operation of coal-fired plants.  Purchased power costs are impacted by the terms of contracts for purchased power, the 
rate of expansion of alternative energy generation sources such as wind or solar energy, and wholesale energy market 
prices.  Idaho Power is required by law to purchase power from some PURPA generation projects at a specified price 
regardless of the then-current load demand or wholesale energy market prices.  This increases the likelihood that Idaho 
Power will at times be required to reduce output from its lower-cost hydroelectric and fossil fuel-fired generation 
resources and may be required to sell in the wholesale power market the power it purchases from PURPA projects at a 
significant loss, which results in increased customer rates.  The Idaho and Oregon PCA mechanisms mitigate in large 
part the potential adverse impacts of fluctuations in power supply costs to Idaho Power, including all of the Idaho-
jurisdiction PURPA power purchase costs.  

•  Regulatory and Environmental Compliance Costs:  Idaho Power is subject to extensive federal and state laws, 
policies, and regulations, as well as regulatory actions and audits by agencies and quasi-governmental agencies, 
including the FERC and the North American Electric Reliability Corporation.  Compliance with these requirements 
directly influences Idaho Power's operating environment and affects Idaho Power's operating costs. Environmental 
laws and regulations, in particular, may increase the cost of operating generation plants and constructing new facilities, 
require that Idaho Power install additional pollution control devices at existing generating plants, or require that Idaho 
Power cease operating certain generation plants.  For instance, the Boardman coal-fired power plant, in which Idaho 

34

 
 
 
 
 
 
 
 
 
  
Power owns a 10-percent interest, is scheduled to cease coal-fired operations by the end of 2020, a decision driven in 
large part by the substantial cost of environmental controls required by existing regulations.  Idaho Power expects to 
spend a considerable amount on environmental compliance and controls in the next decade. 

•  Water Management and Relicensing of the Hells Canyon Hydroelectric Project (HCC):  Because of Idaho Power's 
reliance on stream flow in the Snake River and its tributaries, Idaho Power participates in numerous proceedings and 
venues that may affect its water rights, seeking to preserve the long-term availability of its rights for its hydroelectric 
projects.  Also, Idaho Power is involved in renewing its long-term federal license for the HCC, its largest hydroelectric 
generation source.  Given the number of parties and issues involved, Idaho Power's relicensing costs have been and 
will continue to be substantial.  Idaho Power cannot currently determine the terms of, and costs associated with, any 
resulting long-term license.

Summary of 2015 Financial Results

The following is a summary of Idaho Power's net income, net income attributable to IDACORP, and IDACORP's earnings per 
diluted share for the years ended December 31, 2015, 2014, and 2013 (in thousands, except earnings per share amounts): 

Idaho Power net income
Net income attributable to IDACORP, Inc.
Average outstanding shares – diluted (000’s)
IDACORP, Inc. earnings per diluted share

Year Ended December 31,

2015
190,983
194,679
50,292
3.87

$
$

$

2014
189,387
193,480
50,199
3.85

$
$

$

$
$

$

2013

176,741
182,417
50,126
3.64

The table below provides a reconciliation of net income attributable to IDACORP, Inc. for year ended December 31, 2015 to 
the year ended December 31, 2014 (items are in millions and are before tax unless otherwise noted):

Net income attributable to IDACORP, Inc. - December 31, 2014

$ 193.5

Change in Idaho Power net income:

Customer growth, net of associated power supply costs

Usage per customer, net of associated power supply costs

Change in FCA revenues due to sales volumes and mechanism change

Depreciation expense and property taxes

Rent from electric property, wheeling and other revenue

Other operating and maintenance expenses

Change in Idaho Power operating income prior to sharing mechanisms

Change in operating income as a result of sharing mechanisms

Change in Idaho Power operating income

Non-operating income and expenses

Change in income tax benefit related to first mortgage bond redemption costs

Change in income tax expense due to cumulative impact of tax method change recorded in 2014

Other change in income tax expense

Total increase in Idaho Power net income

Other changes (net of tax)
Net income attributable to IDACORP, Inc. - December 31, 2015

10.3
(6.7)
12.7
(6.2)
3.0
(4.2)
8.9

21.5

30.4
(0.4)
7.2
(24.5)
(11.1)

1.6
(0.4)
$ 194.7

35

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IDACORP's 2015 net income was nearly equivalent to its 2014 net income.  However, there were several notable differences in 
the drivers of each year's results.  Idaho Power's operating income, excluding the impact of the sharing mechanisms under 
Idaho regulatory settlement stipulations, increased $8.9 million for 2015 compared with 2014.  Increased sales volumes 
associated with continued growth in the number of Idaho Power customers increased operating income by $10.3 million, 
though this was partially offset by a $6.7 million decrease from reduced overall usage per customer.  Increases in depreciation 
and property taxes, and other operating and maintenance expenses (which include labor-related expenses), combined to 
decrease operating income by $10.4 million in 2015 when compared with 2014.  Modifications were made to Idaho Power's 
FCA mechanism for 2015 to track fluctuations in residential and small commercial sales associated with actual weather 
conditions, as opposed to normalized weather conditions under the 2014 FCA mechanism.  The FCA mechanism modification, 
combined with lower sales per customer, provided a $12.7 million benefit to operating income in 2015 compared with 2014.  

Additionally, two income tax matters had a significant impact on the comparative results.  Income taxes in 2015 reflect a $7.2 
million flow-through impact of a tax deductible make-whole premium Idaho Power paid upon early redemption of long-term 
debt during 2015.  Income tax expense in 2014 included a $24.5 million benefit from the cumulative effect of a tax method 
change made in that year. 

Further, during 2015 Idaho Power recorded a total of $3.2 million as a provision against current revenue related to an October 
2014 Idaho regulatory settlement stipulation that requires sharing with Idaho customers of a portion of 2015 earnings when 
Idaho Power's Idaho ROE exceeds 10.0 percent.  By contrast, during 2014 under a prior, yet similar, Idaho regulatory 
settlement stipulation, Idaho Power recorded $24.7 million for sharing with Idaho customers.  Of that amount, $16.7 million 
was recorded as additional pension expense and $8.0 million was recorded as a provision against current revenues to be 
refunded to customers through a future rate reduction.  From 2011 to 2015, Idaho Power has shared over $120 million with 
customers through settlement stipulations.

RESULTS OF OPERATIONS

This section of the MD&A takes a closer look at the significant factors that affected IDACORP’s and Idaho Power’s earnings.  
In this analysis, the results for 2015 are compared with 2014 and the results for 2014 are compared with 2013. 

Utility Operations

The table below presents Idaho Power’s energy sales and supply (in thousands of MWh) for the last three years. 

General business sales
Off-system sales

Total energy sales

Hydroelectric generation
Coal generation
Natural gas and other generation

Total system generation

Purchased power
Line losses

Total energy supply

Year Ended December 31,
2014

2013

2015

14,265
1,254
15,519
5,910
4,676
2,076
12,662
3,792
(935)
15,519

14,092
2,220
16,312
6,170
5,851
1,175
13,196
4,153
(1,037)
16,312

14,619
1,683
16,302
5,656
6,327
1,576
13,559
3,902
(1,159)
16,302

Sales Volume and Generation:  In 2015, general business sales volume increased by 1 percent compared with the prior year, as 
the positive sales volume impact of customer growth exceeded reduced usage from moderate weather and energy efficiency 
measures.  Off-system sales volume decreased by 44 percent in 2015 as decreases in output from hydroelectric generation 
resources reduced the amount of surplus power available for off-system sales.  Also, more favorable wholesale market 
conditions in 2014 provided more opportunities for Idaho Power to operate its non-hydroelectric generation facilities for off-
system sales during 2014 than in 2015. 

Generation from Idaho Power's hydroelectric plants declined 4 percent in 2015 compared with 2014 due largely to below-
average stream flows.  The below-average hydroelectric generation during 2013 through 2015 resulted from relatively low 
snow pack and spring season run-off during the three-year period.  At Idaho Power's thermal plants, coal-fired generation 

36

 
 
 
 
 
 
 
 
 
 
 
 
 
 
decreased while natural gas-fired generation increased, as low natural gas prices made natural gas-fired plants more economical 
to run in 2015 than in 2014.

The financial impacts of fluctuations in off-system sales, purchased power, fuel expense, and other power supply-related 
expenses are mitigated by the Idaho and Oregon PCA mechanisms, as further discussed later in this report.

General Business Revenues:  The table below presents Idaho Power’s general business revenues, MWh sales, and number of 
customers for the last three years.

Revenue

Residential
Commercial
Industrial
Irrigation
Total

Provision for sharing
Deferred revenue related to HCC relicensing AFUDC(1)

Total general business revenues

Volume of Sales (MWh)

Residential
Commercial
Industrial
Irrigation

Total MWh sales

Number of customers at year-end

Residential
Commercial
Industrial
Irrigation

Total customers

Year Ended December 31,
2014

2013

2015

$

$

512,068
306,178
182,254
164,403
1,164,903
(3,159)
(10,706)
1,151,038

$

$

500,195
299,462
182,675
158,654
1,140,986
(7,999)
(10,706)
1,122,281

$

$

513,914
281,009
165,941
159,242
1,120,106
(7,602)
(10,776)
1,101,728

4,977
4,045
3,196
2,047
14,265

436,102
68,352
118
20,293
524,865

4,965
3,944
3,217
1,966
14,092

428,294
67,522
121
19,826
515,763

5,365
3,975
3,182
2,097
14,619

422,188
66,734
115
19,398
508,435

  Idaho Power is collecting approximately $10.7 million annually in the Idaho jurisdiction for AFUDC on HCC construction work in progress, but is 

 (1) 
deferring revenue recognition of the amounts collected until the license is issued and the accumulated license costs are placed in service.

Changes in rates, changes in customer demand, and changes in FCA revenues are typically the primary causes of fluctuations in 
general business revenue from period to period.  See "Regulatory Matters" in this MD&A for a list of rate changes implemented 
over the last three years.  The primary influences on changes in customer demand for electricity are weather, economic 
conditions, and energy efficiency.  Extreme temperatures increase sales to customers who use electricity for cooling and 
heating, while moderate temperatures decrease sales.  Precipitation levels and the timing of precipitation during the agricultural 
growing season also affect sales to customers who use electricity to operate irrigation pumps.  For purposes of illustration and 
comparison, Boise, Idaho weather-related information for the last three years is presented in the table that follows.

Year Ended December 31,

2015

2014

2013

Normal

Heating degree-days(1)
Cooling degree-days(1)
942
(1) Heating and cooling degree-days are common measures used in the utility industry to analyze the demand for electricity and indicate when a customer would 
use electricity for heating and air conditioning.  A degree-day measures how much the average daily temperature varies from 65 degrees.  Each degree of 
temperature above 65 degrees is counted as one cooling degree-day, and each degree of temperature below 65 degrees is counted as one heating degree-day.  
While Boise, Idaho weather conditions are not necessarily representative of weather conditions throughout Idaho Power's service area, the greater Boise area 
has the majority of Idaho Power's customers.

1,129

5,556

6,032

4,694

1,280

1,320

4,976

37

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Idaho Power's rate structure provides for higher rates during the summer when system loads are at their highest, and includes 
tiers such that rates increase as a customer's consumption level increases.  These seasonal and tiered rate structures contribute to 
seasonal fluctuations in revenues and earnings. 

General Business Revenues - 2015 Compared with 2014:  General business revenue increased $28.8 million in 2015 compared 
with 2014.  The factors affecting general business revenues included the following:

•  Rates.  Two rate changes impacted general business revenue—an Idaho PCA rate increase effective June 1, 2014, and 

an Idaho PCA rate decrease effective June 1, 2015, both described in Note 3 - "Regulatory Matters" to the consolidated 
financial statements included in this report.  Overall, rate changes combined to decrease general business revenue by 
$2.2 million in 2015. 

•  Usage.  Lower usage per customer in 2015, primarily driven by the impact of more moderate winter weather on 
residential customer usage, as well as energy efficiency, decreased general business revenue by $0.7 million.  
Residential usage per customer was 1.4 percent lower in 2015.

•  Customers.  Customer growth increased general business revenue by $14.1 million.  Customer growth from 2014 to 

2015 was 1.8 percent. 

• 

• 

Sharing.  General business revenue was impacted by Idaho Power's revenue sharing mechanism.  This mechanism is 
associated with Idaho regulatory settlement agreements that provide for the sharing with customers of a portion of 
Idaho-jurisdiction earnings exceeding a 10.0 percent Idaho ROE.  The impact of this mechanism is partially recorded 
as a reduction to general business revenue.  Reductions of $3.2 million and $8.0 million were recorded in 2015 and 
2014, respectively, resulting in a net increase to general business revenue of $4.8 million in 2015.

FCA Revenue. FCA mechanism revenues increased $12.7 million compared with 2014, including the impacts of 
weather and of modifications made to the mechanism by the IPUC effective January 1, 2015.  The modifications to the 
FCA mechanism are described in more detail in "Regulatory Matters" in this MD&A and in Note 3 - "Regulatory 
Matters" to the consolidated financial statements included in this report.

General Business Revenues - 2014 Compared with 2013:  General business revenue increased $20.6 million in 2014 compared 
with 2013.  The factors affecting general business revenues included the following:

•  Rates.  Rate changes, primarily associated with increased power supply costs, combined to increase general business 
revenue by $64.8 million.  The revenue impact of the rate changes was partially offset by associated changes in 
operating expenses—Idaho PCA amortization expense increased $42.8 million in 2014 due to the change in the 
corresponding Idaho PCA true-up rates. 

•  Usage.  Lower usage per customer, primarily driven by the impact of more moderate weather during 2014 on 

residential customer usage, as well as energy efficiency, decreased general business revenue by $55.7 million.  
Residential usage per customer was 9.1 percent lower in 2014.

•  Customers.  Continued customer growth partially offset the decrease in overall MWh sales, increasing revenue by 

$11.9 million.  Customer growth from 2013 to 2014 was 1.4 percent.

• 

Sharing.  The overall increase in general business revenue was impacted by Idaho Power's revenue sharing 
mechanism.  This mechanism, which was in place for 2012 through 2014, is associated with the December 2011 Idaho 
regulatory settlement agreement that provides for the sharing with customers of a portion of Idaho-jurisdiction 
earnings exceeding a 10.0 percent Idaho ROE.  The impact of this mechanism is partially recorded as a reduction to 
general business revenue.  Reductions of $8.0 million and $7.6 million were recorded in 2014 and 2013, respectively, 
resulting in a net decrease to general business revenue of $0.4 million in 2014.

38

 
 
 
 
 
 
 
 
 
Off-System Sales:  Off-system sales consist primarily of long-term sales contracts and opportunity sales of surplus system 
energy.  The following table presents Idaho Power’s off-system sales for the last three years: 

Year Ended December 31,
2014

2013

2015

Revenue
MWh sold
Revenue per MWh

$

$

30,887
1,254
24.63

$

$

77,165
2,220
34.76

$

$

54,473
1,683
32.37

Off-System Sales - 2015 Compared with 2014:  Off-system sales revenue decreased by $46.3 million, or 60 percent, in 2015.  
Off-system sales volumes decreased 44 percent, as 2014 sales benefited from more favorable market conditions, at times, for 
selling power off-system.  The average price of off-system sales transactions in 2015 was 29 percent lower than 2014, 
indicative of generally lower market prices in 2015.  Decreases in output from hydroelectric resources and an increase in 
overall load due to customer growth also reduced the amount of surplus power available for sale off-system during 2015.

Off-System Sales - 2014 Compared with 2013:  Off-system sales revenue increased by $22.7 million, or 42 percent, in 2014 as 
a result of favorable market conditions, at times, for selling power off-system.  Off-system sales volumes also benefitted from 
greater amounts of surplus system energy resulting from slightly lower system loads and increased hydroelectric generation and 
PURPA power purchases.

Other Revenues:  The table below presents the components of other revenues for the last three years: 

Year Ended December 31,
2014

2013

2015

Transmission services and other
Energy efficiency

Total other revenues

$

$

55,048
30,532
85,580

$

$

52,051
27,154
79,205

$

$

51,260
35,637
86,897

Other Revenues - 2015 Compared with 2014:  Other revenues increased $6.4 million, or 8 percent, in 2015.  The increases in 
2015 were primarily the result of increased electricity transmission (wheeling) volumes and greater customer participation in 
energy efficiency programs.  Most energy efficiency activities are funded through a rider mechanism on customer bills.  Energy 
efficiency program expenditures funded through the rider are reported as an operating expense with an equal amount of 
revenues recorded in other revenues, resulting in no net impact on earnings.  

Other Revenues - 2014 Compared with 2013:  Other revenues decreased $7.7 million in 2014, resulting primarily from an order 
issued by the IPUC in the prior year that allowed Idaho Power to recover custom efficiency program incentive payments made 
between January 1, 2011 and June 1, 2013, through the energy efficiency rider.  Based on the order, $14.3 million of other 
revenue (as well as energy efficiency program expense) was recognized in the second quarter of 2013.  Partially offsetting the 
impact of this order from the IPUC was higher utilization of energy efficiency programs when compared with 2013.

39

 
 
 
 
 
 
 
 
 
 
 
 
 
Purchased Power: The table below presents Idaho Power’s purchased power expenses and volumes for the last three years. 

Expense

PURPA contracts

Other purchased power (including wheeling)

Demand response incentive payments

Total purchased power expense

MWh purchased

PURPA contracts

Other purchased power
Total MWh purchased

Cost per MWh from PURPA contracts
Cost per MWh from other purchased power
 Weighted average - all sources (excluding demand response incentive

payments)

Year Ended December 31,
2014

2013

2015

$

131,340 $

144,617 $

131,338

88,430

6,701
226,471

$

92,071

7,940
244,628

$

85,038

4,203
220,579

2,008

1,784
3,792
65.41 $
49.57 $

2,286

1,867
4,153
63.26 $
49.31 $

2,127

1,775
3,902
61.75
47.91

57.96 $

56.99 $

55.45

$

$
$

$

The purchased power cost per MWh often exceeds the off-system sales revenue per MWh because Idaho Power generally needs 
to purchase more power during heavy load periods than during light load periods, and conversely has less energy available for 
off-system sales during heavy load periods than light load periods.  Market energy prices are typically higher during heavy load 
periods than during light load periods.  Also, in accordance with Idaho Power’s risk management policy, Idaho Power may 
purchase or sell energy several months in advance of anticipated delivery.  The regional energy market price is dynamic and 
additional energy purchase or sale transactions that Idaho Power makes at current market prices may be noticeably different 
than the advance purchase or sale transaction prices.  Most of the non-PURPA purchased power and substantially all of the 
PURPA power purchase costs are recovered through base rates and Idaho Power's PCA mechanisms.

Purchased Power - 2015 Compared with 2014:  Purchased power expense decreased $18.2 million, or 7 percent, in 2015.  The 
decrease was due primarily to reduced volumes purchased from both PURPA and non-PURPA sources.  Volume decreases were 
partially offset by increases in average prices.

Purchased Power - 2014 Compared with 2013:  Purchased power expense increased $24.0 million, or 11 percent, in 2014, 
mostly resulting from an increase in generation provided by PURPA wind contracts when compared with 2013.  In addition, 
wholesale gas and electricity market conditions warranted third-party power purchases to serve system load at times rather than 
dispatching Idaho Power-owned thermal resources.  Finally, the increases in demand response program incentive payments 
primarily relate to the temporary cessation of some of these programs during 2013, which were reinstated for 2014.

Fuel Expense:  The table below presents Idaho Power’s fuel expenses and thermal generation for the last three years.

Year Ended December 31,
2014

2013

2015

Expense
Coal (1)
Natural gas and other thermal

Total fuel expense

MWh generated
Coal (1)
Natural gas and other thermal

Total MWh generated

Cost per MWh - Coal
Cost per MWh - Natural gas and other thermal
Weighted average, all sources

$

$

$

$

131,286
54,945
186,231

4,676
2,076
6,752
28.08
26.47
27.58

$

$

$

$

156,172
45,069
201,241

5,851
1,175
7,026
26.69
38.36
28.64

$

$

$

$

160,277
54,205
214,482

6,327
1,576
7,903
25.33
34.39
27.14

(1) 

2015 excludes 147 MWh of generation from the Jim Bridger power plant for which costs were capitalized during feasibility testing of capital projects under 

contemplation.

40

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Most fuel supply contracts are subject to changes in published indexes that are closely related to materials and supplies, labor, 
and diesel costs.  In addition to commodity (variable) costs, both natural gas and coal expense include costs that are more fixed 
in nature for items such as capacity charges, transportation, and fuel handling.  Period to period variances in fuel expense per 
MWh are noticeably impacted by these fixed charges when generation output is substantially different between the periods.

Fuel Expense - 2015 Compared with 2014:  In 2015, fuel expense decreased $15.0 million, or 7 percent, compared with 2014, 
due principally to decreased output from coal-fired steam plants during 2015 combined with lower regional natural gas prices 
for fuel used at the natural gas-fired steam plants.  Overall generation decreased 4 percent due to lower system loads and lower 
wholesale energy prices.  The expense per MWh for natural gas decreased approximately 30 percent in 2015 compared to 2014.  
These lower natural gas prices led to a shift of generation from coal-fired steam plants to natural gas-fired steam plants. 

Fuel Expense - 2014 Compared with 2013:  In 2014, fuel expense decreased $13.2 million, or 6 percent, compared with 2013, 
due principally to decreased output from the natural gas-fired steam plants during 2014, resulting from lower system load 
demands and increased generation provided by facilities under PURPA contracts.  The coal-fired steam plants were also 
operated less in 2014 when compared with 2013, as higher hydroelectric generation enabled lower utilization of the coal-fired 
steam plants to serve system load requirements.  Partially offsetting these decreases were higher commodity costs when 
compared with 2013.

PCA Mechanisms:  Idaho Power's power supply costs (primarily purchased power and fuel, less off-system sales) can vary 
significantly from year to year.  Volatility of power supply costs arises from factors such as weather conditions, wholesale 
market prices and volumes of power purchased and sold in the wholesale markets, Idaho Power's hydroelectric and thermal 
generation volumes and fuel costs, generation plant availability, and retail loads.  To address the volatility of power supply 
costs, Idaho Power's PCA mechanisms in the Idaho and Oregon jurisdictions allow Idaho Power to recover from or refund to 
customers most of the fluctuations in power supply costs.  In the Idaho jurisdiction, the PCA includes a cost or benefit sharing 
ratio that allocates the deviations in net power supply expenses between customers (95 percent) and the company (5 percent), 
with the exception of PURPA power purchases and demand-response program incentives, which are allocated 100 percent to 
customers.  Because of the PCA mechanisms, the primary financial impacts of power supply cost variations is that cash is paid 
out but recovery from customers does not occur until a future period, or cash that is collected is refunded to customers in a 
future period, resulting in fluctuations in operating cash flows from year to year.  The table that follows presents the 
components of the Idaho and Oregon PCA mechanisms for the last three years. 

Year Ended December 31,
2014

2013

2015

Idaho power supply cost deferrals

Amortization of prior year authorized balances

Total power cost adjustment expense

$

$

(35,802) $
52,568
16,766

$

(48,104) $
70,339
22,235

$

(67,127)
27,590
(39,537)

The power supply deferrals represent the portion of the power supply cost fluctuations deferred under the PCA mechanisms.  
When actual power supply costs are higher than the amount forecasted in PCA rates most of the difference is deferred.  The 
amortization of the prior year’s balances represents the offset to the amounts being collected or refunded in the current PCA 
year that were deferred or accrued in the prior PCA year (the true-up component of the PCA). 

PCA Mechanisms - 2015 Compared with 2014:  Actual net power supply cost deferrals decreased in 2015 relative to 2014, a 
change of $12.3 million—from $48.1 million to $35.8 million.  Power supply costs collected through base rates increased on 
June 1, 2014, resulting in less costs needing to be recovered through the PCA mechanism since that time.  The $52.6 million of 
amortization offsets the collection from customers of prior years' deferrals.  

PCA Mechanisms - 2014 Compared with 2013:  Actual net power supply cost deferrals decreased in 2014 relative to 2013, a 
change of $19.0 million—from $67.1 million to $48.1 million.  Power supply costs collected through base rates increased on 
June 1, 2014, resulting in less costs needing to be recovered through the PCA mechanism since that time.  The $70.3 million of 
amortization offsets the collection from customers of prior years' deferrals.  

41

 
 
 
 
 
 
 
 
 
 
 
Other Operations and Maintenance Expenses:  The changes in operations and maintenance (O&M) expenses for the periods 
presented are discussed below.

O&M - 2015 Compared with 2014:  Other O&M expense decreased by $12.4 million in 2015 compared with 2014, a decrease 
of 3.5 percent, due to the following factors:

• 

$16.7 million was recorded as additional pension expense in 2014 related to a December 2011 Idaho regulatory 
settlement agreement, which required sharing with Idaho customers of a portion of earnings in excess of a 10 percent 
Idaho ROE (thereby reducing customers' future pension obligations).  There were no additional expenses related to the 
settlement agreement in 2015; 

•  Excluding the additional 2014 pension expense, labor-related expenses increased $2.1 million, or 1.1 percent, in 2015 

due to normal escalations in labor and benefits costs; and

•  Other O&M expenses increased $2.2 million, the most notable increase being hydroelectric generation expenses that 

were $2.0 million higher, primarily due to increased repair costs and purchased services.

O&M - 2014 Compared with 2013:  Other O&M expense increased by $5.7 million in 2014 compared with 2013, an increase of 
less than two percent, primarily due to an increase of $4.6 million in labor-related expenses caused by normal escalations in 
labor and benefits costs.

Gain on Sale of Investments

In 2013, Idaho Power recognized an $11.6 million gain on the sale of marketable securities.  These investments relate to the 
Rabbi trust designated to provide funding for Idaho Power's obligations under its Security Plan for Senior Management 
Employees.  Gross proceeds from the sale were $25.7 million.  No such sale occurred in 2015 or 2014.

Income Taxes

IDACORP's and Idaho Power's 2015 income tax expense increased $28.9 million and $28.7 million, respectively, when 
compared to 2014.  The increase was primarily due to greater Idaho Power pre-tax earnings in 2015 and lower flow-through 
income tax benefits from discrete items.  In 2014, Idaho Power recorded a $24.5 million income tax benefit related to the 
cumulative impact of tax accounting method changes for its capitalized repairs deduction.  During 2015, Idaho Power recorded 
an income tax benefit of $7.2 million for the tax deduction related to the call premium Idaho Power paid on the early 
redemption of long-term debt.  

Income tax expense in 2014 decreased significantly compared with 2013, principally as a result of the Idaho Power capitalized 
repair deduction method changes.  For additional information relating to IDACORP's and Idaho Power's income taxes, 
including the availability of tax credit carryforwards, see Note 2 - “Income Taxes” to the consolidated financial statements 
included in this report.

LIQUIDITY AND CAPITAL RESOURCES

Overview

Idaho Power has been pursuing significant enhancements to its utility infrastructure in an effort to ensure an adequate supply of 
electricity, to provide service to new customers, and to maintain system reliability.  Idaho Power's existing hydroelectric and 
thermal generation facilities also require continuing upgrades and component replacement.  Idaho Power's expenditures for 
property, plant and equipment, excluding AFUDC, were $284 million in 2015 and $265 million in 2014.  Idaho Power expects 
these substantial capital expenditures to continue, with estimated total capital expenditures of nearly $1.5 billion over the period 
from 2016 through 2020.  

Idaho Power funds its liquidity needs for capital expenditures through cash flows from operations, debt offerings, commercial 
paper markets, credit facilities, and capital contributions from IDACORP.  During 2015, Idaho Power has continued its efforts 
to optimize operations, control costs, and generate operating cash inflows to meet operating expenditures, contribute to capital 
expenditure requirements, and pay dividends to shareholders.  Idaho Power periodically files for rate adjustments for recovery 
of operating costs and both the return of, and a return on, capital investments to provide the opportunity to align Idaho Power's 
earned returns with those allowed by regulators.  During 2016, Idaho Power intends to evaluate the timing of filing of its next 
general rate case. 

42

 
 
 
 
 
 
 
 
 
 
As of February 12, 2016, IDACORP's and Idaho Power's access to debt, equity, and credit arrangements included:

• 
• 

• 

• 

their respective $100 million and $300 million revolving credit facilities;
IDACORP's shelf registration statement filed with the U.S. Securities and Exchange Commission (SEC) on May 22, 
2013, which may be used for the issuance of debt securities and common stock, including up to 3 million shares of 
IDACORP common stock available for issuance under IDACORP's sales agency agreement executed in July 2013; 
Idaho Power's shelf registration statement, filed with the SEC jointly with IDACORP on May 22, 2013, which may be 
used for the issuance of first mortgage bonds and debt securities; $250 million is available for issuance under a selling 
agency agreement executed in July 2013 and pursuant to state regulatory authority; and 
IDACORP's and Idaho Power's issuance of commercial paper, which may be issued up to an amount equal to the 
available credit capacity under their respective credit facilities.  

Based on planned capital expenditures and operating and maintenance expenses for 2016, the companies believe they will be 
able to meet capital requirements and fund corporate expenses during 2016 with a combination of existing cash and operating 
cash flows generated by Idaho Power's utility business.  IDACORP and Idaho Power believe they could meet any short-term 
cash shortfall with existing credit facilities and expect to continue to manage short-term liquidity through commercial paper 
markets.

IDACORP and Idaho Power monitor capital markets with a view toward opportunistic debt and equity transactions, taking into 
account current and potential future long-term needs.  As a result, IDACORP may issue debt securities or may issue common 
stock under the existing continuous equity program, and Idaho Power may issue debt securities, if the companies believe terms 
available in the capital markets are favorable and that issuances would be financially prudent.  Idaho Power also periodically 
analyzes whether partial or full early redemption of one or more existing outstanding series of first mortgage bonds is desirable, 
and in some cases may refinance indebtedness with new indebtedness issued with more favorable terms, including interest rates 
lower than the series being redeemed.  To that end, on March 6, 2015, Idaho Power issued $250 million in principal amount of 
3.65% first mortgage bonds, Series J, maturing on March 1, 2045.  On April 23, 2015, Idaho Power redeemed, prior to maturity, 
its $120 million in principal amount of 6.025% first mortgage bonds, medium-term notes due July 2018.  In accordance with 
the redemption provisions of the original terms of the notes, the redemption included payment by Idaho Power of a make-whole 
premium of $17.9 million.  Idaho Power used a portion of the net proceeds of the March 2015 sale of first mortgage bonds, 
medium-term notes to effect the redemption.  During 2016, Idaho Power may determine to redeem prior to maturity one or 
more other outstanding series of first mortgage bonds, depending on capital availability and market conditions. 

IDACORP and Idaho Power seek to maintain capital structures of approximately 50 percent debt and 50 percent equity, and 
maintaining this ratio influences IDACORP's and Idaho Power's debt and equity issuance decisions.  As of December 31, 2015, 
IDACORP's and Idaho Power's capital structures, as calculated for purposes of applicable debt covenants, were as follows: 

IDACORP

Idaho Power

Debt

Equity

46%

54%

48%

52%

IDACORP and Idaho Power generally maintain their cash and cash equivalents in highly liquid investments, such as U.S. 
Treasury Bills, money market funds, and bank deposits. 

Operating Cash Flows

IDACORP's and Idaho Power's principal sources of cash flows from operations are Idaho Power's sales of electricity and 
transmission capacity.  Significant uses of cash flows from operations include the purchase of fuel and power, other operating 
expenses, interest, and pension plan contributions.  Operating cash flows can be significantly influenced by factors such as 
weather conditions, rates and the outcome of regulatory proceedings, and economic conditions.  As fuel and purchased power 
are significant uses of cash, Idaho Power has regulatory mechanisms in place that provide for the deferral and recovery of the 
majority of the fluctuation in those costs.  However, if actual costs rise above the level allowed in retail rates, deferral balances 
increase (reflected as a regulatory asset), negatively affecting operating cash flows until such time as those costs, with interest, 
are recovered from customers.  

IDACORP’s and Idaho Power’s operating cash inflows in 2015 were $353 million and $346 million, respectively, a decrease of 
$11 million for IDACORP and a slight increase for Idaho Power when compared with 2014.  Significant items that affected the 
companies' operating cash flows in 2015 relative to 2014 were as follows:

43

 
 
 
 
 
 
 
 
 
 
• 

• 

• 

• 

changes in regulatory assets and liabilities, mostly related to the relative amounts of power supply and fixed costs 
deferred and collected under the Idaho rate mechanisms, decreased operating cash inflows by $18 million;
Idaho Power made $39 million of cash contributions to its defined benefit pension plan in 2015, compared with $30 
million of cash contributions during 2014. 
changes in deferred taxes and in taxes accrued and receivable combined to increase cash flows by $34 million and $50 
million at IDACORP and Idaho Power, respectively; and  
comparative changes in working capital balances due primarily to timing—principally related to a smaller decrease in 
accounts receivable in 2015 compared to the decrease in accounts receivable in 2014.  Changes in accounts receivable 
balances reduced operating cash flows $16 million and $18 million for IDACORP and Idaho Power, respectively.

IDACORP's and Idaho Power's operating cash inflows in 2014 were $364 million and $343 million, respectively, increases of  
$59 million and $53 million, respectively, compared with 2013.  Significant items that affected the companies' operating cash 
flows in 2014 relative to 2013 included:

• 

• 

• 

• 

changes in regulatory assets and liabilities, mostly related to the relative amounts of power supply costs deferred and 
collected under the Idaho PCA mechanism, increased operating cash inflows by $58 million;
changes in working capital balances due primarily to timing.  Decreases in receivable balances from 2013 to 2014 
compared with the increase in receivable balances experienced from 2012 to 2013 resulted in an increase to cash flows 
for 2014 of approximately $50 million for IDACORP and $52 million for Idaho Power;
cash outflows related to income taxes increased by approximately $10 million for IDACORP and $16 million for 
Idaho Power from 2013 to 2014; and
Idaho Power's joint venture, BCC, made net distributions to Idaho Power of $4 million in 2014, as compared with $15 
million in 2013.  A build-up in coal inventories at BCC during 2014 reduced BCC's cash available for distribution. 

Investing Cash Flows

Investing activities consist primarily of capital expenditures related to new construction and improvements to Idaho Power’s 
generation, transmission, and distribution facilities.  Idaho Power's construction expenditures, including AFUDC, were $294 
million, $274 million, and $247 million in 2015, 2014, and 2013, respectively.  These capital expenditures were primarily for 
construction of utility infrastructure needed to address Idaho Power’s aging plant and equipment, customer growth, and 
environmental and regulatory compliance requirements.   As discussed in "Capital Requirements" below, Idaho Power received 
$11 million in both 2015 and 2013 from Boardman-to-Hemingway project joint permitting participants relating to a portion of 
these construction expenditures.  Additionally, Idaho Power's investments in its Rabbi Trust designated to fund its non-qualified 
pension plan were $10 million, $8 million, and $7 million in 2015, 2014, and 2013, respectively.  In 2015, Idaho Power used 
$30 million of Rabbi Trust assets to acquire company-owned life insurance.

Financing Cash Flows

Financing activities provide supplemental cash for both day-to-day operations and capital requirements as needed.  Idaho Power 
funds liquidity needs for capital investment, working capital, managing commodity price risk, and other financial commitments 
through cash flows from operations, debt offerings, commercial paper markets, credit facilities, and capital contributions from 
IDACORP.  IDACORP funds its cash requirements, such as payment of taxes, capital contributions to Idaho Power, and non-
utility operating expenses through cash flows from operations, commercial paper markets, sales of common stock, and credit 
facilities.  The following are significant items and transactions that affected financing cash flows in 2013, 2014, and 2015:

• 

• 
• 

• 

• 

• 

on April 8, 2013, Idaho Power issued $75 million in principal amount of 2.50% first mortgage bonds due 2023 and $75 
million in principal amount of 4.00% first mortgage bonds due 2043;
on October 1, 2013 Idaho Power repaid at maturity $70 million of its 4.25% first mortgage bonds;
on March 6, 2015, Idaho Power issued $250 million in principal amount of 3.65% first mortgage bonds, Series J, 
maturing on March 1, 2045;  
on April 23, 2015, Idaho Power redeemed, prior to maturity, its $120 million in principal amount of 6.025% first 
mortgage bonds, medium-term notes due July 2018; 
IDACORP and Idaho Power paid dividends of approximately $97 million, $88 million, and $79 million in 2015, 2014, 
and 2013, respectively; and
IDACORP's net change in commercial paper borrowings were reductions of $11 million and $23 million and $15 
million in 2015, 2014, and 2013 respectively .

44

 
 
 
 
 
 
 
 
 
 
 
 
Financing Programs and Available Liquidity

IDACORP Equity Programs:  On July 12, 2013, IDACORP entered into a Sales Agency Agreement with BNY Mellon Capital 
Markets, LLC (BNYMCM), under which IDACORP may offer and sell up to 3 million shares of its common stock from time to 
time through BNYMCM as IDACORP's agent.  IDACORP has no obligation to sell any minimum number of shares under the 
Sales Agency Agreement.  As of the date of this report, 3 million shares of IDACORP common stock remain available for sale 
under the Sales Agency Agreement with BNYMCM.  As of the date of this report, IDACORP does not expect to issue any 
shares of its common stock under the Sales Agency Agreement prior to its expiration in July 2016.

Effective July 1, 2012, IDACORP discontinued original issuances of common stock and instructed the plan administrators to 
use market purchases of IDACORP common stock for purposes of acquiring IDACORP common stock for the IDACORP, Inc. 
Dividend Reinvestment and Stock Purchase Plan and the Idaho Power Company Employee Savings Plan.  However, IDACORP 
may determine at any time to resume original issuances of common stock under those plans.  As noted above, an important 
component of that determination will be IDACORP's and Idaho Power's capital structure.

Idaho Power First Mortgage Bonds:  Idaho Power's issuance of long-term indebtedness is subject to the approval of the IPUC, 
OPUC, and Wyoming Public Service Commission (WPSC).  In April 2013, Idaho Power received orders from the IPUC, 
OPUC, and WPSC authorizing Idaho Power to issue and sell from time to time up to $500 million in aggregate principal 
amount of debt securities and first mortgage bonds, subject to conditions specified in the orders.  Authority from the IPUC was 
through April 9, 2015.  However, on April 1, 2015, the IPUC approved a two-year extension through April 9, 2017, continuing 
Idaho Power's authorization to issue and sell from time to time debt securities and first mortgage bonds.  The OPUC's and 
WPSC's orders do not impose a time limitation for issuances, but the OPUC order does impose a number of other conditions, 
including a maximum interest rate limit of seven percent.  

On July 12, 2013, Idaho Power entered into a Selling Agency Agreement with eight banks named in the agreement in 
connection with the potential issuance and sale from time to time of up to $500 million in aggregate principal amount of first 
mortgage bonds, Series J (Series J Notes), under Idaho Power’s Indenture of Mortgage and Deed of Trust, dated as of October 
1, 1937, as amended and supplemented (Indenture).  Also on July 12, 2013, Idaho Power entered into the Forty-seventh 
Supplemental Indenture, dated as of July 1, 2013, to the Indenture.  The Forty-seventh Supplemental Indenture provides for, 
among other items, the issuance of up to $500 million in aggregate principal amount of Series J Notes.  As of the date of this 
report, $250 million remained on Idaho Power's Selling Agency Agreement for the issuance of first mortgage bonds, including 
Series J Notes, or debt securities. 

The issuance of first mortgage bonds requires that Idaho Power meet interest coverage and security provisions set forth in the 
Indenture.  Future issuances of first mortgage bonds are subject to satisfaction of covenants and security provisions set forth in 
the Indenture, market conditions, regulatory authorizations, and covenants contained in other financing agreements.  

The Indenture limits the amount of first mortgage bonds at any one time outstanding to $2.0 billion, and as a result the 
maximum amount of first mortgage bonds Idaho Power could issue as of December 31, 2015 was limited to approximately 
$279 million.  Idaho Power may increase the $2.0 billion limit on the maximum amount of first mortgage bonds outstanding by 
filing a supplemental indenture with the trustee as provided in the Indenture of Mortgage and Deed of Trust.  Separately, the 
Indenture also limits the amount of additional first mortgage bonds that Idaho Power may issue to the sum of (a) the principal 
amount of retired first mortgage bonds and (b) 60 percent of total unfunded property additions, as defined in the Indenture.  As 
of December 31, 2015, Idaho Power could issue approximately $1.5 billion of additional first mortgage bonds based on retired 
first mortgage bonds and total unfunded property additions.  

Refer to Note 4 - “Long-Term Debt” to the consolidated financial statements included in this report for more information 
regarding long-term financing arrangements.

IDACORP and Idaho Power Credit Facilities:  In November 2015, IDACORP and Idaho Power entered into Credit 
Agreements for $100 million and $300 million credit facilities, respectively.  These facilities replaced IDACORP's and Idaho 
Power's existing Second Amended and Restated Credit Agreements, dated October 26, 2011, as amended.  Each of the credit 
facilities may be used for general corporate purposes and commercial paper back-up.  IDACORP's facility permits borrowings 
under a revolving line of credit of up to $100 million at any one time outstanding, including swingline loans not to exceed $10 
million at any time and letters of credit not to exceed $50 million at any time.  IDACORP's facility may be increased, subject to 
specified conditions, to $150 million.  Idaho Power's facility permits borrowings through the issuance of loans and standby 
letters of credit of up to $300 million at any one time outstanding, including swingline loans not to exceed $30 million at any 
one time and letters of credit not to exceed $100 million at any time.  Idaho Power's facility may be increased, subject to 

45

 
 
 
 
 
 
 
 
 
specified conditions, to $450 million.  The interest rates for any borrowings under the facilities are based on either (1) a floating 
rate that is equal to the highest of the prime rate, federal funds rate plus 0.5 percent, or LIBOR rate plus 1.0 percent, or (2) the 
LIBOR rate, plus, in each case, an applicable margin, provided that the federal funds rate and LIBOR rate will not be less than 
zero percent.  The applicable margin is based on IDACORP's or Idaho Power's, as applicable, senior unsecured long-term 
indebtedness credit rating, as set forth on a schedule to the credit agreements.  The companies also pay a facility fee based on 
the respective company's credit rating for senior unsecured long-term debt securities.  The credit facilities terminate on 
November 6, 2020, though IDACORP and Idaho Power may request up to two one-year extensions of the credit agreements, 
subject to certain conditions.

Each facility contains a covenant requiring each company to maintain a leverage ratio of consolidated indebtedness to 
consolidated total capitalization equal to or less than 65 percent as of the end of each fiscal quarter.  In determining the leverage 
ratio, “consolidated indebtedness” broadly includes all indebtedness of the respective borrower and its subsidiaries, including, 
in some instances, indebtedness evidenced by certain hybrid securities (as defined in the credit agreement).  “Consolidated total 
capitalization” is calculated as the sum of all consolidated indebtedness, consolidated stockholders' equity of the borrower and 
its subsidiaries, and the aggregate value of outstanding hybrid securities.  At December 31, 2015, the leverage ratios for 
IDACORP and Idaho Power were 46 percent and 48 percent, respectively.  IDACORP's and Idaho Power's ability to utilize the 
credit facilities is conditioned upon their continued compliance with the leverage ratio covenants included in the credit 
facilities.  There are additional covenants, subject to exceptions, that prohibit certain mergers, acquisitions, and investments, 
restrict the creation of certain liens, and prohibit entering into any agreements restricting dividend payments from any material 
subsidiary.  At December 31, 2015, IDACORP and Idaho Power believe they were in compliance with all facility covenants.  
Further, IDACORP and Idaho Power do not believe they will be in violation or breach of their respective debt covenants during 
2016.

The events of default under both facilities include, without limitation, non-payment of principal, interest, or fees; materially 
false representations or warranties; breach of covenants; bankruptcy or insolvency events; condemnation of property; cross-
default to certain other indebtedness; failure to pay certain judgments; change of control; failure of IDACORP to own free and 
clear of liens the voting stock of Idaho Power; the occurrence of specified events or the incurring of specified liabilities relating 
to benefit plans; and the incurring of certain environmental liabilities, subject, in certain instances, to cure periods.

Upon any event of default relating to the voluntary or involuntary bankruptcy of IDACORP or Idaho Power or the appointment 
of a receiver, the obligations of the lenders to make loans under the applicable facility and to issue letters of credit will 
automatically terminate and all unpaid obligations will become due and payable.  Upon any other event of default, the lenders 
holding greater than 50 percent of the outstanding loans or greater than 50 percent of the aggregate commitments (required 
lenders) or the administrative agent with the consent of the required lenders may terminate or suspend the obligations of the 
lenders to make loans under the facility and to issue letters of credit under the facility and/or declare the obligations to be due 
and payable.  During an event of default under the facilities, the lenders may, at their option, increase the applicable interest 
rates then in effect and the letter of credit fee by 2.0 percentage points per annum.  A ratings downgrade would result in an 
increase in the cost of borrowing, but would not result in a default or acceleration of the debt under the facilities.  However, if 
Idaho Power's ratings are downgraded below investment grade, Idaho Power must extend or renew its authority for borrowings 
under its IPUC and OPUC regulatory orders.

Without additional approval from the IPUC, the OPUC, and the WPSC, the aggregate amount of short-term borrowings by 
Idaho Power at any one time outstanding may not exceed $450 million.  Idaho Power has obtained approval of the state public 
utility commissions of Idaho, Oregon, and Wyoming for the issuance of short-term borrowings through November 2022.

IDACORP and Idaho Power Commercial Paper:  IDACORP and Idaho Power have commercial paper programs under which 
they issue unsecured commercial paper notes up to a maximum aggregate amount outstanding at any time not to exceed the 
available capacity under their respective credit facilities, described above.  IDACORP's and Idaho Power's credit facilities are 
available to the companies to support borrowings under their commercial paper programs.   The commercial paper issuances are 
used to provide an additional financing source for the companies' short-term liquidity needs.  The maturities of the commercial 
paper issuances will vary, but may not exceed 270 days from the date of issue.  Individual instruments carry a fixed rate during 
their respective terms, although the interest rates are reflective of current market conditions, subjecting the companies to 
fluctuations in interest rates. 

46

 
 
 
 
 
 
 
 
 
Available Short-Term Borrowing Liquidity

The following table outlines available short-term borrowing liquidity as of the dates specified:  

December 31, 2015

December 31, 2014

Revolving credit facility
Commercial paper outstanding
Identified for other use(1)
Net balance available
(1) Port of Morrow and American Falls bonds that Idaho Power could be required to purchase prior to maturity under the optional or mandatory purchase 
provisions of the bonds, if the remarketing agent for the bonds were unable to sell the bonds to third parties.
(2) Holding company only.

IDACORP(2)
100,000
$
(20,000)
—
80,000

$

Idaho Power
300,000
$
—
(24,245)
275,755

$

IDACORP(2)
125,000
$
(31,300)
—
93,700

$

Idaho Power
300,000
$
—
(24,245)
275,755

$

At February 12, 2016, IDACORP had no loans outstanding under its credit facility and $17.5 million of commercial paper 
outstanding, and Idaho Power had no loans outstanding under its credit facility and no commercial paper outstanding.  The table 
below presents additional information about short-term commercial paper borrowing during the years ended December 31, 
2015 and 2014:

Commercial paper:
Year end:

Amount outstanding
Weighted average interest rate

Daily average amount outstanding during the year
Weighted average interest rate during the year
Maximum month-end balance
(1) Holding company only.

December 31, 2015

December 31, 2014

IDACORP(1)

Idaho Power

IDACORP(1)

Idaho Power

$

$

$

20,000

0.88%

22,054

0.53%

43,400

$

$

$

— $
—%
— $
—%
— $

31,300

0.43%

37,786

0.32%

47,300

$

$

$

—
—%
—
—%
—

Impact of Credit Ratings on Liquidity and Collateral Obligations

IDACORP’s and Idaho Power’s access to capital markets, including the commercial paper market, and their respective 
financing costs in those markets, depends in part on their respective credit ratings.  The following table outlines the ratings of 
Idaho Power’s and IDACORP’s securities, and the ratings outlook, by Standard & Poor’s Ratings Services and Moody’s 
Investors Service as of the date of this report: 

Moody's Investors Service:

Rating Outlook
Long-Term Issuer Rating
First Mortgage Bonds
Senior Secured Debt
Commercial Paper
Tax-Exempt Debt

Standard & Poor's Rating Services:

Corporate Credit Rating
Rating Outlook
Short-Term Rating

IDACORP

Idaho Power

Stable
Baa1
None
None
P-2
None

BBB
Stable
A-2

Stable
A3
A1
A1
P-2
A3/VMIG-2

BBB
Stable
A-2

These security ratings reflect the views of the ratings agencies.  An explanation of the significance of these ratings may be 
obtained from each rating agency.  Such ratings are not a recommendation to buy, sell, or hold securities.  Any rating can be 
revised upward or downward or withdrawn at any time by a rating agency if it decides that the circumstances warrant the 
change.  Each rating agency has its own methodology for assigning ratings and, accordingly, each rating should be evaluated 
independently of any other rating.

47

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Idaho Power maintains margin agreements relating to its wholesale commodity contracts that allow performance assurance 
collateral to be requested of and/or posted with certain counterparties.  As of December 31, 2015, Idaho Power had posted $0.9 
million of performance assurance collateral.  Should Idaho Power experience a reduction in its credit rating on its unsecured 
debt to below investment grade Idaho Power could be subject to requests by its wholesale counterparties to post additional 
performance assurance collateral, and counterparties to derivative instruments and other forward contracts could request 
immediate payment or demand immediate ongoing full daily collateralization on derivative instruments and contracts in net 
liability positions.  Based upon Idaho Power’s current energy and fuel portfolio and market conditions as of December 31, 
2015, the amount of additional collateral that could be requested upon a downgrade to below investment grade is approximately 
$11.6 million.  To minimize capital requirements, Idaho Power actively monitors its portfolio exposure and the potential 
exposure to additional requests for performance assurance collateral through sensitivity analysis.

Capital Requirements

Idaho Power's construction expenditures, excluding AFUDC, were $284 million during the year ended December 31, 2015.  
The table below presents Idaho Power's estimated cash requirements for construction, excluding AFUDC, for 2016 through 
2020 (in millions of dollars).  However, given the uncertainty associated with the timing of infrastructure projects and 
associated expenditures, actual expenditures and their timing could deviate substantially from those set forth in the table.

Ongoing capital expenditures (excluding item listed below in this table)

Jim Bridger plant selective catalytic reduction equipment (discussed below)

Total (excluding AFUDC)

2016
280-285

20-25
300-310

$

$

2017
$ 275-285

2018-2020
820-870

0
275-285

40-50
860-920

Major Infrastructure Projects:  Idaho Power is engaged in the development of a number of significant projects and has entered 
into arrangements with third parties for joint development of infrastructure projects.  The most notable projects are described 
below.

Jim Bridger Plant Selective Catalytic Reduction Equipment:  Idaho Power and the plant co-owners are installing selective 
catalytic reduction (SCR) equipment to reduce nitrogen oxide (NOx) emissions at the Jim Bridger power plant, in order to 
comply with regional haze rules.  The regional haze rules provide for installation of SCR on unit 3 and unit 4.  The rules 
provide for an equivalent technology for NOx reductions on unit 2 by 2021 and unit 1 by 2022.  Idaho Power estimates that the 
total cost for Idaho Power's share of the upgrades on units 3 and 4 is approximately $105 million, excluding AFUDC.  As of 
December 31, 2015, Idaho Power had expended $83 million, excluding AFUDC, on SCR installation at units 3 and 4.  The unit 
3 SCR has been installed and was operating as of November 30, 2015.  As of the date of this report, the unit 4 project remains 
on schedule and Idaho Power expects the total project cost to be at or below the originally estimated amount.

Boardman-to-Hemingway Transmission Line:  The Boardman-to-Hemingway line, a proposed 300-mile, 500-kV transmission 
project between a station near Boardman, Oregon and the Hemingway station near Boise, Idaho, would provide transmission 
service to meet future resource needs.  The Boardman-to-Hemingway line was included in the preferred resource portfolio in 
Idaho Power’s 2015 IRP.  In January 2012, Idaho Power entered into a joint funding agreement with PacifiCorp and the 
Bonneville Power Administration (BPA) to pursue permitting of the project.  The joint funding agreement provides that Idaho 
Power's interest in the permitting phase of the project would be approximately 21 percent, and that during future negotiations 
relating to construction of the transmission line Idaho Power would seek to retain that percentage interest in the completed 
project.  Assuming both other participants fund their full share of the total cost of the permitting phase of the project, Idaho 
Power's estimated share of the cost of the permitting phase of the project is approximately $40 million, including Idaho Power's 
AFUDC.  Total cost estimates for the project are between $1.0 billion and $1.2 billion, including AFUDC for Idaho Power's 
share of the project.  This cost estimate excludes the impacts of inflation and price changes of materials and labor resources that 
may occur following the date of the estimate.  Idaho Power's share of the permitting phase of the project (excluding AFUDC) is 
included in the capital requirements table above.  In December 2015, Idaho Power received an early payment of $11.4 million 
from a joint permitting participant.  Construction costs beyond the permitting phase are not included in the table above.

Idaho Power has expended approximately $73 million on the Boardman-to-Hemingway project through December 31, 2015.  
Pursuant to the terms of the joint funding arrangements, approximately $35 million of that amount has been received by Idaho 
Power as reimbursement from the project participants as of December 31, 2015.  Approximately $15 million more must be 
reimbursed to Idaho Power in the future by the project participants for expenses Idaho Power incurred, for a total amount 
reimbursable by joint permitting participants of $49 million.  In addition to the $49 million amount, $5 million is subject to 

48

 
 
 
 
 
 
 
 
 
 
 
 
 
reimbursement at a later date from the joint permitting participants, assuming their continued participation in the project, for 
expenses Idaho Power incurred prior to execution of the joint funding arrangements.  Idaho Power plans to seek recovery of its 
share of project costs through the regulatory process.

The permitting phase of the Boardman-to-Hemingway project is subject to review and approval by the U.S. Bureau of Land 
Management (BLM) as the lead federal agency on behalf of other federal agencies, the U.S. Forest Service, and the Oregon 
Department of Energy.  The BLM issued a draft environmental impact statement (EIS) for the project in December 2014, and as 
of the date of this report Idaho Power expects the BLM to issue a final EIS during 2016 and a record of decision in late 2016 or 
early 2017.  In the separate Oregon state permitting process, Idaho Power submitted a preliminary application for a site 
certificate in February 2013 and intends to finalize the amended preliminary application in 2016.  Idaho Power is unable to 
determine an in-service date for the line but, given the status of ongoing permitting activities, expects the in-service date would 
be in 2022 or beyond.

Gateway West Transmission Line:  Idaho Power and PacifiCorp are pursuing the joint development of the Gateway West 
project, a 500-kV transmission project between a station located near Douglas, Wyoming and the Hemingway station.  In 
January 2012, Idaho Power and PacifiCorp entered a joint funding agreement for permitting of the project.  Idaho Power's 
estimated cost for the permitting phase of the Gateway West project is approximately $64 million, including AFUDC.  Idaho 
Power has expended approximately $29 million on the permitting phase of the project through December 31, 2015.  As of the 
date of this report, Idaho Power estimates the total cost for its share of the project (including both permitting and construction) 
to be between $200 million and $400 million, including AFUDC.  Idaho Power's share of the permitting phase of the project 
(excluding AFUDC) is included in the capital requirements table above.  Construction costs beyond the permitting phase are not 
included in the table above.

The permitting phase of the project is subject to review and approval of the BLM.  The BLM released its record of decision 
under the National Environmental Policy Act in November 2013.  In its record of decision, the BLM identified its final decision 
on the routing of the project, issued right-of-way grants on public land for some segments, and deferred a decision on two 
segments (in both of which Idaho Power has an interest) to resolve routing concerns in those areas.  Several interested parties 
have appealed the BLM's record of decision, and Idaho Power has intervened in the proceedings.  The BLM has initiated the 
supplemental EIS process for the two deferred segments.  As of the date of this report, the BLM's schedule provides for the 
issuance of a record of decision on the two deferred segments in 2016.

Hells Canyon Complex Relicensing: The HCC, located on the Snake River where it forms the border between Idaho and 
Oregon, provides approximately 68 percent of Idaho Power's hydroelectric generating nameplate capacity and 32 percent of its 
total generating nameplate capacity.  Idaho Power has been engaged in the process of obtaining from the FERC a new long-
term license for the HCC.  As noted in "Regulatory Matters" in this MD&A, the past and anticipated future costs associated 
with obtaining a new long-term license for the HCC are significant.  Idaho Power expects that the annual capital expenditures 
and operating and maintenance expenses associated with compliance with the terms and conditions of the long-term license 
could also be substantial, but the company is currently unable to estimate those costs in light of the uncertainty surrounding the 
ultimate terms and conditions that may be included in the license.  Idaho Power intends to seek recovery of those relicensing 
and compliance costs in rates through the regulatory process. 

Shoshone Falls Plant Expansion:  The Shoshone Falls plant expansion project was included in Idaho Power's 2013 IRP and, as 
originally planned, was to consist of constructing a new powerhouse, intake structure, penstock, and substation and installing a 
new turbine to increase the nameplate generation capacity of the plant from 12.5 MW to 61.5 MW.  However, following 
additional analysis of the costs and potential benefits of the expansion, Idaho Power's 2015 IRP includes in the near-term action 
plan a modified project that would result in a significantly smaller increase in nameplate generation capacity at the facility, in a 
range of 1.7 MW to 4 MW, with a potential on-line date as early as 2019.  Idaho Power is performing additional engineering 
and cost studies to determine the most suitable project that will optimize and improve the reliability of the facility.  Following 
consultation with FERC staff, Idaho Power has concluded it can proceed with the modified expansion under the terms and 
conditions of the current operating license.

Completed Transmission System Transaction:  To enhance the abilities of Idaho Power and PacifiCorp to serve their respective 
customers, in October 2014, Idaho Power and PacifiCorp executed a Joint Ownership and Operating Agreement (Joint 
Operating Agreement) applicable to certain transmission-related equipment to be exchanged by Idaho Power and PacifiCorp.  
The asset exchange was finalized on October 30, 2015, under the terms of a Joint Purchase and Sale Agreement dated October 
24, 2014, between Idaho Power and PacifiCorp.  Under the terms of the Joint Purchase and Sale Agreement each party agreed 
to transfer to the other transmission-related equipment with an estimated year-end 2014 net book value of approximately $43 
million, subject to true-up as of the closing date.  Additionally, the Joint Purchase and Sale Agreement terminated or amended a 

49

 
 
 
 
 
 
 
 
 
number of legacy long-term agreements related to the ownership and operation of transmission-related equipment and 
transmission services between Idaho Power and PacifiCorp.  In 2014, Idaho Power collected approximately $8 million in 
transmission revenues under legacy long-term transmission agreements that were terminated in connection with the Joint 
Purchase and Sale Agreement.  As a result of the transaction and termination of those long-term transmission agreements, an 
increase to Idaho Power's OATT rate will be phased-in over a two-year period, as discussed in "Regulatory Matters" in the 
MD&A.

Other Infrastructure Projects:  Idaho Power continues to add to its system to accommodate for growth and to reinvest for 
reliability and general system improvement.  These system enhancement projects involve significant capital expenditures.  
Examples of system enhancements over the period 2016 through 2020, and their estimated costs, include the following:

• 

• 
• 
• 
• 
• 

• 

$50-$85 million per year for transmission-related projects other than the Boardman-to-Hemingway and Gateway West 
projects;
$30-$35 million per year for reconstruction of distribution lines; 
$15-$20 million per year for replacement of underground distribution cables;
$25-$40 million per year for ongoing thermal plant improvement programs other than SCR equipment;
$25-$40 million per year for hydroelectric plant improvement programs; 
$5-$10 million per year for reliability-related construction projects, such as wood pole crossarm replacements and 
feeder system improvement; and
$30-$45 million per year for general plant improvements, such as information technology, facilities, and fleet vehicles.

Approval of Long-Term Service Agreement for Natural Gas Plants:  During 2015, Idaho Power executed a long-term service 
agreement for maintenance services at three of Idaho Power's natural gas plants, with a total estimated obligation of $82 million 
over the term of the agreement.  In addition to the provision of maintenance services to Idaho Power, the agreement provided 
for Idaho Power's sale of approximately $22 million of capitalized spare parts to the service provider.  Idaho Power expects that 
the arrangement will decrease the long-term costs of operating Idaho Power's natural gas plants.  The agreement became 
effective in the fourth quarter of 2015, following receipt of an order on reconsideration from the IPUC approving accounting 
treatment acceptable to Idaho Power.  

Environmental Regulation Costs:  Idaho Power anticipates that it will incur significant expenditures for the installation of 
environmental controls at its coal-fired plants and for its hydroelectric relicensing efforts.  The near-term cost estimates for 
environmental matters are summarized in Part I, Item 1 - "Business" of this report.  The capital portion of these amounts is 
included in the Capital Requirements table above but does not include costs related to possible changes in current or new 
environmental laws or regulations and enforcement policies that may be enacted in response to issues such as climate change 
and emissions from coal-fired and gas-fired generation plants.

Long-Term Resource Planning:  The IPUC and OPUC require that Idaho Power prepare biennially an Integrated Resource 
Plan (IRP).  Idaho Power filed its most recent IRP in June 2015.  The IRP seeks to forecast Idaho Power's loads and resources 
for a 20-year period, analyzes potential supply-side and demand-side resource options, and identifies potential near-term and 
long-term actions.  The 2015 IRP includes as near-term action items the continued permitting and planning for the Boardman-
to-Hemingway transmission line and further investigation of the early retirement of the North Valmy power plant in 
collaboration with the plant's co-owner.  The near-term action plan also includes a decrease in the size of the planned Shoshone 
Falls expansion described above, as well as commencement of an economic evaluation of environmental control retrofits for 
units 1 and 2 at the Jim Bridger power plant.  Additional information on Idaho Power's IRP is included in Part I, Item 1 - 
"Business - Resource Planning" in this report. 

Defined Benefit Pension Plan Contributions and Recovery

Idaho Power contributed $39 million, $30 million, and $30 million to its defined benefit pension plan in 2015, 2014, and 2013, 
respectively.  Idaho Power estimates that it has no minimum contribution requirement for 2016, though it plans to contribute at 
least $20 million to the pension plan during 2016.  Idaho Power may elect to contribute more than that amount based on long-
term projections.  Idaho Power's contributions are made in a continued effort to balance the regulatory collection of these 
expenditures with the amount and timing of contributions to mitigate the cost of being in an underfunded position.  In 2016 and 
beyond, Idaho Power expects continuing significant contribution obligations under the pension plan.  Refer to Note 11 - 
"Benefit Plans" to the consolidated financial statements included in this report and the section titled "Contractual Obligations" 
below in this MD&A for information relating to those obligations.

50

 
 
 
 
 
 
 
 
 
Idaho Power defers its Idaho-jurisdiction pension expense as a regulatory asset until recovered from Idaho customers.  As of 
December 31, 2015, Idaho Power's deferral balance associated with the Idaho jurisdiction was $82.5 million.  Deferred pension 
costs are expected to be amortized to expense to match the revenues received when contributions are recovered through rates.  
Idaho Power only records a carrying charge on the unrecovered balance of cash contributions.  The IPUC has authorized Idaho 
Power to recover and amortize $17.1 million of deferred pension costs annually, and has applied $68.1 million against the 
deferred amount under its Idaho sharing mechanisms.  The primary impact of pension contributions is on timing of cash flows, 
as cost recovery lags behind the timing of contributions.

Contractual Obligations

The following table presents IDACORP’s and Idaho Power’s contractual cash obligations as of December 31, 2015, for the 
respective periods in which they are due:

Long-term debt(1)
Future interest payments(2)
Operating leases(3)
Purchase obligations:
Cogeneration and small power production(4)
Fuel supply agreements
Other(5)

Pension and postretirement benefit plans(6)
Other long-term liabilities

Total

Total

$

1,747
1,417
17

4,736

251
263

264

1
8,696

$

$

$

2016

2019-2020

Thereafter

Payments Due by Period
2017-2018
(millions of dollars)
1
83
—

1
165
2

$

$

199

60
62

8

—
413

$

475

59
52

75

1
830

$

330
153
2

469

18
36

138

—
1,146

$

$

1,415
1,016
13

3,593

114
113

43

—
6,307

(1) For additional information, see Note 4 – “Long-Term Debt” to the consolidated financial statements included in this report.
(2) Future interest payments are calculated based on the assumption that all debt is outstanding until maturity.  For debt instruments with variable rates, interest 
is calculated for all future periods using the rates in effect at December 31, 2015.
(3) The operating leases include right-of-way easements.  Approximately $1 million of the obligations included have contracts that do not specify terms related 
to expiration.  As these contracts are presumed to continue indefinitely, 10 years of information, estimated based on current contract terms, has been included 
in the table for presentation purposes.
(4) Subsequent to the end of 2015, as of February 5, 2016, three power purchase contracts with solar projects not yet online with a combined nameplate 
capacity of 25 MW had terminated.  Termination of the agreements reduced Idaho Power's contractual payment obligations by approximately $74 
million over the 20-year lives of the terminated contracts. 
(5) Approximately $84 million of the amounts in other purchase obligations are contracts that do not specify terms related to expiration.  As these contracts are 
presumed to continue indefinitely, 10 years of information, estimated based on current contract terms, has been included in the table for presentation 
purposes.  Other purchase obligations also includes Idaho Power's estimated proportionate funding obligation for goods and services under non-fuel purchase 
agreements at its jointly owned generation facilities.  In some instances, Idaho Power is not a direct party to an underlying purchase agreement, but is 
obligated under the instruments governing the joint ventures to reimburse the co-owner for payments the co-owner makes pursuant to the purchase agreement.  
Those estimated amounts have been included in the table above.  
(6) Idaho Power estimates pension contributions based on actuarial data.  As of the date of this report, Idaho Power cannot estimate pension contributions 
beyond 2020 with any level of precision, and amounts through 2020 are estimates only and are subject to change.  For more information on pension and 
postretirement plans, refer to Note 11 – "Benefit Plans" to the consolidated financial statements included in this report.

Dividends

The amount and timing of dividends paid on IDACORP’s common stock are within the discretion of IDACORP’s board of 
directors.  IDACORP's board of directors reviews the dividend rate periodically to determine its appropriateness in light of 
IDACORP’s current and long-term financial position and results of operations, capital requirements, rating agency 
considerations, contractual and regulatory restrictions, legislative and regulatory developments affecting the electric utility 
industry in general and Idaho Power in particular, competitive conditions, and any other factors the board of directors deems 
relevant.  The ability of IDACORP to pay dividends on its common stock is dependent upon dividends paid to it by its 
subsidiaries, primarily Idaho Power. 

IDACORP has a dividend policy that provides for a target long-term dividend payout ratio of between 50 and 60 percent of 
sustainable IDACORP earnings, with the flexibility to achieve that payout ratio over time and to adjust the payout ratio or to 
deviate from the target payout ratio from time to time based on the various factors that drive IDACORP's board of directors' 
dividend decisions.  Notwithstanding the dividend policy adopted by IDACORP's board of directors, the dividends IDACORP 

51

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
pays remain in the discretion of the board of directors who, when evaluating the dividend amount, will continue to take into 
account the factors above, among others.  In September of 2013, 2014, and 2015, IDACORP's board of directors voted to 
increase the quarterly dividend to $0.43 per share, $0.47 per share, and $0.51 per share of IDACORP common stock, 
respectively.  IDACORP's 2015 calendar year payout ratio was 50 percent.  

For additional information relating to IDACORP and Idaho Power dividends, including restrictions on IDACORP’s and Idaho 
Power’s payment of dividends, see Note 6 – “Common Stock” to the consolidated financial statements included in this report.

Contingencies and Proceedings

IDACORP and Idaho Power are involved in a number of litigation, alternative dispute resolution, and administrative 
proceedings, and are subject to claims and legal actions arising in the ordinary course of business, that could affect their future 
results of operations and financial condition.  Certain legal or administrative proceedings to which IDACORP or Idaho Power 
are parties or are otherwise involved, and certain actual or potential legal claims pertaining to Idaho Power, are described in 
Note 10 - "Contingencies" to the consolidated financial statements included in this report.  Except where noted in Note 10, in 
many instances IDACORP and Idaho Power are unable to predict the outcomes of the matters or estimate the impact the 
proceedings may have on their financial positions, results of operations, or cash flows. 

Idaho Power is also actively monitoring various environmental regulations that may have a significant impact on its future 
operations.  Given uncertainties regarding the outcome, timing, and compliance plans for these environmental matters, Idaho 
Power is unable to determine the financial impact of potential new regulations but does believe that future capital investment 
for infrastructure and modifications to its electric generating facilities to comply with these regulations could be significant.

Off-Balance Sheet Arrangements

Through a self-bonding mechanism, Idaho Power guarantees its portion of reclamation activities and obligations at BCC, of 
which IERCo owns a one-third interest.  This guarantee, which is renewed annually with the Wyoming Department of 
Environmental Quality, was $73 million at December 31, 2015, representing IERCo's one-third share of BCC's total 
reclamation obligation of $218 million.  BCC has a reclamation trust fund set aside specifically for the purpose of paying these 
reclamation costs.  At December 31, 2015, the value of the reclamation trust fund totaled $70 million.  During 2015, the 
reclamation trust fund distributed approximately $6 million for reclamation activity costs associated with the BCC surface 
mine.  BCC periodically assesses the adequacy of the reclamation trust fund and its estimate of future reclamation costs.  To 
ensure that the reclamation trust fund maintains adequate reserves, BCC has the ability to add a per-ton surcharge to coal sales.  
Starting in 2010, BCC began applying a nominal surcharge to coal sales in order to maintain adequate reserves in the 
reclamation trust fund.  Because of the existence of the fund and the ability to apply a per-ton surcharge, the estimated fair 
value of this guarantee is minimal. 

REGULATORY MATTERS

Introduction

Idaho Power's development of rate case plans takes into consideration short-term and long-term needs for rate relief and 
involves several factors that can affect the timing of rate filings.  These factors include, among others, in-service dates of major 
capital investments, the timing of changes in major revenue and expense items, and customer growth rates.  Idaho Power's most 
recent general rate cases in Idaho and Oregon were filed during 2011, and Idaho Power filed a large single-issue rate case for 
the Langley Gulch power plant in Idaho and Oregon in 2012.  These significant rate cases resulted in the resetting of base rates 
in both Idaho and Oregon during 2012.  Idaho Power also reset its base-rate power supply expenses in the Idaho jurisdiction for 
purposes of updating the collection of costs through retail rates in 2014, but without a resulting net increase in rates.  Between 
general rate cases, Idaho Power relies upon power cost adjustment mechanisms, tariff riders, and other mechanisms to reduce 
regulatory lag, which refers to the period of time between making an investment or incurring an expense and recovering that 
investment or expense and earning a return.  

Management's regulatory focus in recent years has been largely on regulatory settlement stipulations and the design of rate 
mechanisms.  During 2016, Idaho Power plans to continue to assess its need to file and timing of a general rate case in its two 
retail jurisdictions, based on its consideration of the factors described above, among others.  

52

 
 
 
 
 
 
 
 
 
 
Notable Retail Rate Changes in Idaho and Oregon

Included in the table that follows are notable regulatory developments during 2013, 2014, and 2015 that affected Idaho Power's 
results for the periods.  Also refer to Note 3 - "Regulatory Matters" to the consolidated financial statements included in this 
report for a description of regulatory mechanism and associated orders of the IPUC and OPUC, which should be read in 
conjunction with the discussion of regulatory matters in this MD&A. 

Description
2013 Idaho FCA(2)
2013 Idaho PCA(2)(3)
2013 Oregon APCU(2)
2014 Idaho FCA(2)
2014 Idaho PCA(2)(4)
Transfer of power supply costs from the Idaho PCA mechanism to Idaho base rates(5)
2015 Idaho FCA(2)
2015 Idaho PCA(2)(6)

Effective
Date
6/1/2013
6/1/2013
6/1/2013
6/1/2014
6/1/2014
6/1/2014

6/1/2015

6/1/2015

Estimated 
Annualized Revenue 
Impact (millions)(1)

(1)
140
3
6
(88)
99

2
(12)

(1) The annual amount collected in rates is typically not recovered on a linear basis (i.e., 1/12th per month), and is instead recovered in proportion to general 
business sales volumes.
(2) The rate changes for the Idaho PCA and FCA are applicable only for one-year periods.  Similarly, a portion of the rate changes from the Oregon APCU are 
applicable only for one-year periods.
(3) 2013 PCA rates reflect $7 million of Idaho revenue-sharing related to 2012 financial results pursuant to an IPUC order issued in 2013 under regulatory 
settlement agreements approved in January 2010 and December 2011. The $140 million increase in PCA rates includes the reduction in the PCA mechanism 
component of the revenue sharing amount from $27 million for the 2012 PCA to $7 million for the 2013 PCA.
(4) 2014 PCA rates reflect (a) the application of $20 million of surplus Idaho energy efficiency rider funds, (b) $8 million of customer revenue sharing for the 
year 2013 under a regulatory settlement agreement approved in December 2011, and (c) a $99 million shift in base net power supply expenses from recovery 
via the PCA mechanism to recovery through base rates. 
(5) See footnote (4) above.  Approval of the transfer of collection of specified power supply costs from the Idaho PCA mechanism to Idaho base rates resulted 
in no net change in customer rates.
(6) 2015 PCA rates reflect the application of (a) a customer rate credit of $8.0 million for sharing of revenues with customers for the year 2014 under the terms 
of a December 2011 settlement stipulation, (b) a $1.5 million customer benefit relating to a change to the PCA methodology described below, and (c) $4.0 
million of surplus Idaho energy efficiency rider funds.

Idaho and Oregon General Rate Cases and Base Rate Adjustments

Effective January 1, 2012, Idaho Power implemented new Idaho base rates resulting from the regulatory settlement of a general 
rate case filing Idaho Power made in 2011.  In the general rate case, the IPUC issued an order approving a settlement stipulation 
that provided for an overall 7.86 percent authorized rate of return on an Idaho-jurisdiction rate base of approximately $2.36 
billion.  The settlement stipulation resulted in a $34.0 million overall increase in Idaho Power's annual Idaho-jurisdictional base 
rate revenues.  Neither the IPUC's order nor the settlement stipulation specified an authorized rate of return on equity.

Effective March 1, 2012, Idaho Power implemented new Oregon base rates resulting from its receipt of an order from the 
OPUC approving a settlement stipulation in its general rate case proceedings that provided for a $1.8 million base rate revenue 
increase, a rate of return on equity of 9.9 percent, and an overall rate of return of 7.757 percent in the Oregon 

Idaho and Oregon base rates were subsequently adjusted again in 2012, in connection with Idaho Power's completion of the 
Langley Gulch power plant.  In June 2012, the IPUC issued an order approving a $58.1 million increase in annual Idaho-
jurisdiction base rate revenues, effective July 1, 2012, for inclusion of the investment and associated costs of the plant in rates. 
The order also provided for a $335.9 million increase in Idaho rate base.  On September 20, 2012, the OPUC issued an order 
approving a $3.0 million increase in annual Oregon jurisdiction base rate revenues, effective October 1, 2012, for inclusion of 
the investment and associated costs of the plant in Oregon rates.

In March 2014, the IPUC issued an order approving Idaho Power's application requesting an increase of approximately $106 
million in the normalized or "base level" net power supply expense on a total-system basis to be used to update base rates and 
in the determination of the PCA rate that became effective June 1, 2014.  Approval of the order removed the Idaho-
jurisdictional portion of those expenses (approximately $99 million) from collection via the Idaho PCA mechanism and instead 
results in collecting that portion through base rates.  

53

 
 
 
 
 
 
 
 
 
Non-Base Rate Idaho Regulatory Settlement Stipulations

Settlement Stipulation for 2012 to 2014:  In December 2011, the IPUC issued an order, separate from the then-pending Idaho 
general rate case proceeding, approving a settlement stipulation that allowed Idaho Power to, in certain circumstances, amortize 
additional ADITC if Idaho Power's actual Idaho ROE for 2012, 2013, or 2014 was less than 9.5 percent, to help achieve a 9.5 
percent Idaho ROE for the applicable year.  The more specific terms and conditions of the December 2011 Idaho settlement 
stipulation are described in Note 3 - "Regulatory Matters - Notable Idaho Regulatory Matters" to the consolidated financial 
statements included in this report.  Under the December 2011 settlement stipulation, when Idaho Power's actual Idaho ROE for 
any of those years exceeded 10.0 percent, Idaho Power was required to share a portion of its Idaho-jurisdiction earnings with 
Idaho customers.  As Idaho Power's 2012, 2013, and 2014 Idaho ROE exceeded 10.0 percent, Idaho Power did not amortize 
additional ADITC for those years, but instead shared earnings with customers.  The amounts Idaho Power recorded for sharing 
for those years were as follows (in millions of dollars): 

Additional pension expense funded through sharing

Provision against current revenue as a result of sharing

Total

2014

2013

2012

$

$

16.7

8.0

24.7

$

$

16.5

7.6

24.1

$

$

14.6

7.2

21.8

Settlement Stipulation for 2015 to 2019:  In October 2014, the IPUC issued an order approving an extension, with 
modifications, of the terms of the December 2011 settlement stipulation for the period from 2015 through 2019, or until the 
terms are otherwise modified or terminated by order of the IPUC or the full $45 million of additional ADITC contemplated by 
the settlement stipulation has been amortized.  The more specific terms and conditions of the October 2014 settlement 
stipulation are described in Note 3 - "Regulatory Matters - Notable Idaho Regulatory Matters" to the consolidated financial 
statements included in this report.  IDACORP and Idaho Power believe that the terms allowing amortization of additional 
ADITC in the October 2014 settlement stipulation provide the companies with a greater degree of earnings stability than would 
be possible without the terms of the stipulation in effect. 

Idaho Power recorded no additional ADITC amortization and a $3.2 million provision against current revenue for sharing with 
customers for 2015, as its Idaho ROE for 2015 was above 10.0 percent.  Accordingly, the full $45 million of additional ADITC 
remains available for future use under the terms of the settlement stipulation.

Modifications to Idaho Annual Rate Adjustment 

PCA Mechanism: In July 2014, the IPUC opened a docket pursuant to which Idaho Power, the IPUC Staff, and other interested 
parties evaluated Idaho Power's application of the true-up component of the PCA mechanism.  The July 2014 docket arose from 
a prior order of the IPUC, which noted that the IPUC Staff believed that Idaho Power's application of the true-up component 
introduced a line-loss bias that inflated the true-up revenue that Idaho Power collects under the PCA.  In May 2015, the IPUC 
approved a settlement stipulation that modified the calculation of the true-up component of the PCA mechanism.  The 
mechanics of the PCA mechanism and the terms of the PCA settlement stipulation are described in Note 3 - "Regulatory 
Matters" to the consolidated financial statements included in this report. 

FCA Mechanism:Also in July 2014, the IPUC opened a docket to allow Idaho Power, the IPUC Staff, and other interested 
parties to further evaluate the IPUC Staff's concerns regarding the application of the FCA.  Concerns cited included the 
application of weather-normalization, the customer count methodology, the rate adjustment cap, cross-subsidization issues, and 
whether the FCA is in fact effectively removing Idaho Power's disincentive to aggressively pursue energy efficiency 

The FCA is designed to remove Idaho Power’s financial disincentive to invest in energy efficiency programs by separating (or 
decoupling) the recovery of fixed costs from the variable kilowatt-hour charge and linking it instead to a set amount per 
customer.  Stated generally, under the FCA Idaho Power charges residential and small commercial customers when it recovers 
less "actual fixed costs per customer" than the base level of fixed costs that the IPUC authorized for recovery through rates in 
the last general rate case, and Idaho Power credits those customers when its "actual fixed costs per customer" recovered exceed 
that base level of fixed costs. The FCA is adjusted each year to collect, or refund, the difference between the authorized fixed-
cost recovery amount and the actual fixed costs recovered by Idaho Power during the year

In May 2015, the IPUC approved a settlement stipulation that modified the FCA mechanism by replacing weather-normalized 
sales with actual sales in the calculation of the FCA, applicable for the entirety of calendar year 2015 and thereafter, with new 
rates effective June 1, 2016.  The settlement stipulation also provided that a modified rate design should be considered at a later 

54

 
 
 
 
 
 
 
 
 
 
 
time for residential and small commercial customers to address the financial disincentive caused by the existing rate design that 
the FCA is intended to remove.  The rate design may include, but would not be limited to, reduced energy charges, increased 
monthly service charges, and the introduction of demand char

In years when actual sales per customer are higher than weather-normalized sales due to high summer or low winter 
temperatures, Idaho Power expects that the new FCA methodology will be less favorable to Idaho Power than the prior 
methodology.  Conversely, Idaho Power expects that the new FCA methodology will be more favorable to Idaho Power in years 
when actual sales per customer are lower than weather normalized sales due to cooler summer or warmer winter temperatures.  
Implementation of the new methodology was retroactive to January 1, 2015, as contemplated by the settlement stipulation.  For 
2015, application of the new FCA methodology resulted in Idaho Power recording greater FCA revenues than would have been 
recorded for the year under the prior mechanism.

Deferred Net Power Supply Costs

Deferred power supply costs represent certain differences between Idaho Power's actual net power supply costs and the costs 
included in its retail rates, the latter being based on annual forecasts of power supply costs.  Deferred power supply costs are 
recorded on the balance sheets for future recovery or refund through customer rates.  Idaho Power's PCA mechanisms in its 
Idaho and Oregon jurisdictions provide for annual adjustments to the rates charged to retail customers.  The PCA mechanism 
and associated financial impacts are described in "Results of Operations" in this MD&A and in Note 3 - "Regulatory Matters" 
to the consolidated financial statements included in this report.  

Factors that have influenced significant PCA rate changes in recent years include year-to-year volatility in hydroelectric 
generation conditions, market energy prices and the volume of off-system sales, power purchase costs from renewable energy 
projects, and revenue sharing under Idaho regulatory settlement stipulations.  From year to year, the factors that influence 
power supply costs can vary significantly, which can result in significant accruals and deferrals under the PCA mechanism.  The 
PCA rate changes reflected in the table under the heading "Notable Retail Rate Changes in Idaho and Oregon" are illustrative of 
the volatility of net power supply costs and the impact on PCA rates.   

As noted above under the heading "Idaho and Oregon General Rate Cases and Base Rate Adjustments," in light of the existence 
of permanent increases in power supply costs, in March 2014 the IPUC issued an order approving Idaho Power's application 
requesting recovery of a portion of its ongoing power supply costs through base rates rather than through the Idaho PCA 
mechanism.  

The following table summarizes the change in deferred net power supply costs over the prior two years.

Idaho

Oregon(1)

Total

$

$

$

Balance at December 31, 2013
Current period net power supply costs deferred
Revenue sharing applied to deferred power supply costs
Energy efficiency rider funds applied to deferred power supply costs
Prior deferred costs amortized and recovered through rates
SO2 allowance and renewable energy certificate (REC) sales
Interest and other
Balance at December 31, 2014
Current period net power supply costs deferred
Revenue sharing applied to deferred power supply costs
Energy efficiency rider funds applied to deferred power supply costs
Prior deferred costs amortized and recovered through rates
SO2 allowance and renewable energy certificate (REC) sales
Interest and other
Balance at December 31, 2015
(1) Oregon power supply cost deferrals are subject to a statute that specifically limits rate amortizations of deferred costs to six percent of gross Oregon 
revenue per year (approximately $3 million).  Deferrals are amortized sequentially.

84,843
48,104
(7,624)
(20,000)
(48,489)
(2,895)
573
54,512
35,802
(7,999)
(4,000)
(32,519)
(1,575)
335
44,556

6,611
—
—
—
(2,210)
(127)
403
4,677
—
—
—
(2,294)
(70)
351
2,664

91,454
48,104
(7,624)
(20,000)
(50,699)
(3,022)
976
59,189
35,802
(7,999)
(4,000)
(34,813)
(1,645)
686
47,220

$

$

$

55

 
 
 
 
 
 
 
 
 
 
 
Open Access Transmission Tariff Rate Proceedings

Idaho Power uses a formula rate for transmission service provided under its OATT.  The transmission rates are updated annually 
based primarily on financial and operational data Idaho Power files with the FERC.  In August 2015, Idaho Power filed with the 
FERC and publicly posted its final informational filing for its 2015 transmission rate, reflecting a transmission rate of $23.43 
per kW-year, to be effective for the period from October 1, 2015 to September 30, 2016.  Historic OATT rate information is 
included in Note 3 - "Regulatory Matters" to the consolidated financial statements included in this report.

Leading up to the final informational filing, in a draft transmission rate posting Idaho Power made in June 2015, Idaho Power 
included in its draft OATT rate calculations the expected changes in demand associated with the then-pending transmission 
system transaction with PacifiCorp (described in "Liquidity and Capital Resources" in this MD&A), resulting in a draft rate of 
$33.23 per kW-year.  The transmission system transaction terminated certain legacy transmission agreements and provided for 
new long-term point-to-point transmission service for PacifiCorp. In response to concerns from transmission customers, Idaho 
Power subsequently shifted its procedural approach for incorporating the impacts of the transmission system transaction on its 
OATT rate.  Idaho Power's 2015 transmission rate of $23.43 per kW-year for the period from October 1, 2015 to September 30, 
2016 does not include the impact of the transmission system transaction.  In a July 2015 filing, Idaho Power requested 
clarification from the FERC as to when Idaho Power may fully incorporate the effects of the pending transmission system 
transaction in the formula used to determine its OATT rate.  On November 19, 2015, the FERC issued an order requiring Idaho 
Power to reflect historic loads in the load denominator used in the transmission formula rate, resulting in an OATT rate increase 
that is phased-in over a two-year period rather than on an accelerated basis. 

Relicensing of Hydroelectric Projects

Overview:  Idaho Power, like other utilities that operate nonfederal hydroelectric projects on qualified waterways, obtains 
licenses for its hydroelectric projects from the FERC.  These licenses have a term of 30 to 50 years depending on the size, 
complexity, and cost of the project.  The expiration dates for the FERC licenses for each of the facilities are included in Part I - 
Item 2 - "Properties" in this report.  Costs for the relicensing of Idaho Power's hydroelectric projects are recorded in 
construction work in progress until new multi-year licenses are issued by the FERC, at which time the charges are transferred to 
electric plant in service.  Relicensing costs and costs related to new licenses will be submitted to regulators for recovery through 
the ratemaking process.  Relicensing costs of $221 million for the HCC, Idaho Power's largest hydroelectric complex and a 
major relicensing effort, were included in construction work in progress at December 31, 2015.  As of the date of this report, the 
IPUC authorizes Idaho Power to include in its Idaho jurisdiction rates approximately $6.5 million annually ($10.7 million when 
grossed-up for the effect of income taxes) of AFUDC relating to the HCC relicensing project.  Collecting these amounts now 
will reduce the amount collected in the future once the HCC relicensing costs are approved for recovery in base rates.  As of 
December 31, 2015, Idaho Power's regulatory liability for collection of AFUDC relating to the HCC was $88 million.  In 
addition to the discussion below, see "Environmental Matters" in this MD&A for a discussion of environmental compliance 
under FERC licenses for Idaho Power's hydroelectric generating plants.

Hells Canyon Complex:  The HCC, located on the Snake River where it forms the border between Idaho and Oregon, provides 
approximately 68 percent of Idaho Power's hydroelectric generating nameplate capacity and 32 percent of its total generating 
nameplate capacity.  In July 2003, Idaho Power filed an application with the FERC for a new license in anticipation of the July 
2005 expiration of the then-existing license.  Since the expiration of that license, Idaho Power has been operating the project 
under annual licenses issued by the FERC.  In December 2004, Idaho Power and eleven other parties, including National 
Marine Fisheries Service (NMFS) and U.S. Fish and Wildlife Service (USFWS), involved in the HCC relicensing process 
entered into an interim agreement that addresses the effects of the ongoing operations of the HCC on Endangered Species Act 
(ESA) listed species pending the relicensing of the project.  In August 2007, the FERC Staff issued a final EIS for the HCC, 
which the FERC will use to determine whether, and under what conditions, to issue a new license for the project.  The purpose 
of the final EIS is to inform the FERC, federal and state agencies, Native American tribes, and the public about the 
environmental effects of Idaho Power's operation of the HCC.  Certain portions of the final EIS involve issues that may be 
influenced by water quality certifications for the project under Section 401 of the Clean Water Act (CWA) and formal 
consultations under the ESA, which remain unresolved.

In connection with its relicensing efforts, Idaho Power has filed water quality certification applications, required under Section 
401 of the CWA, with the states of Idaho and Oregon requesting that each state certify that any discharges from the project 
comply with applicable state water quality standards.  Section 401 of the CWA requires that a state either approve or deny a 
Section 401 water quality certification application within one year of the filing of the application or the state may be considered 
to have waived its certification authority under the CWA.  As a consequence, Idaho Power has been filing and withdrawing its 

56

 
 
 
 
 
 
 
 
 
 
 
Section 401 certification applications with Oregon and Idaho on an annual basis while it has been working with the states to 
identify measures that will provide reasonable assurance that discharges from the HCC will adequately address applicable water 
quality standards.

In September 2007, in connection with the issuance of its final EIS, the FERC notified the NMFS and the USFWS of its 
determination that the licensing of the HCC was likely to adversely affect ESA-listed species, including the bull trout and fall 
Chinook salmon and steelhead, under the NMFS's and USFWS's jurisdiction and requested that the NMFS and USFWS initiate 
formal consultation under Section 7 of the ESA on the licensing of the HCC.  Each of the NMFS and USFWS responded to the 
FERC that the conditions relating to the licensing of the HCC were not fully described or developed in the final EIS as the 
measures to address the water quality effects of the project were yet to be fully defined by the Section 401 certification process 
pending before the Oregon and Idaho Departments of Environmental Quality.  The NMFS and USFWS therefore recommended 
that formal consultation under the ESA be delayed until the Section 401 certification process is completed. 

Idaho Power continues to work with Idaho and Oregon in the development of measures to provide reasonable assurance that 
any discharges from the HCC will comply with applicable state water quality standards so that appropriate water quality 
certifications can be issued for the project, and continues to cooperate with the USFWS, NMFS, and the FERC in an effort to 
address ESA concerns.  Idaho Power has begun the process for construction of new aerated runners at the Brownlee project 
(part of the HCC) at an estimated cost of $50 million.  Other measures that have been proposed or considered have included 
modification of spillways at Brownlee and Hells Canyon to address total dissolved gas issues, and upstream watershed 
improvements or the installation of a temperature control structure to address water temperatures during a small portion of the 
year.  If Idaho Power is required to take these or other additional measures to satisfy relicensing requirements, it could add 
substantially to project costs.  Idaho Power continues to work with the Oregon and Idaho Departments of Environmental 
Quality on the water quality certification issue and the water quality measures that will be required to obtain 401 certification.  

As of the date of this report, Idaho Power is unable to predict the timing of issuance by the FERC of any license order or the 
ultimate capital investment and ongoing operating and maintenance costs Idaho Power will incur in complying with any new 
license.  However, as of the date of this report, Idaho Power estimates that the annual costs it will incur to obtain a new long-
term license for the HCC, including AFUDC but excluding costs expected to be incurred for complying with the license after 
issuance, are likely to range from $20 million to $30 million until issuance of the license.

Renewable Energy Standards and Contracts

Renewable Portfolio Standards:  Numerous proponents have introduced legislation in the U.S. Congress that would require 
electric utilities to obtain a specified percentage of their electricity from renewable sources, commonly referred to as a 
"renewable portfolio standard" or "RPS."  However, as of the date of this report no federal or State of Idaho RPS is in effect.  
Idaho Power will be required to comply with a five- or ten-percent RPS in Oregon beginning in 2025 (depending on loads at 
that time), and Idaho Power expects to meet either RPS requirement with Renewable Energy Certificates (REC) obtained from 
the purchase of power from the Elkhorn Valley wind project.  

Pursuant to an IPUC order, Idaho Power is selling its near-term RECs and returning to customers their share (shared 95% with 
customers in the Idaho jurisdiction) of those proceeds through the PCA.  For the years ended December 31, 2015 and 2014, 
Idaho Power's REC sales totaled $1.8 million and $3.2 million, respectively.  The comparative decrease in REC sales resulted 
primarily from the elimination of a REC purchase and sale agreement with a third party. 

Were Idaho Power to be subject to additional RPS legislation, it may cease in full or in part the sale of RECs it receives, seek to 
obtain RECs from additional projects, generate RECs from any REC-generating facilities it owns or may be required to 
construct in light of an RPS, or purchase RECs in the market.  Historically, Idaho Power has generally not received the RECs 
associated with PURPA projects.  However, an order issued by the IPUC in December 2012, described below, provides that 
Idaho Power will own a portion of the RECs generated by some PURPA projects.  The required purchase of additional RECs to 
meet RPS requirements would increase Idaho Power's costs, which Idaho Power expects would be wholly or largely passed on 
to customers through rates and the PCA mechanisms.

Renewable Energy Contracts and PURPA:  Idaho Power purchases wind power from both cogeneration and small power 
production (CSPP) and non-CSPP facilities, including its largest non-CSPP wind power project -- the Elkhorn Valley wind 
project with a 101 MW nameplate capacity.  As of February 5, 2016, Idaho Power had contracts to purchase energy from on-
line CSPP wind power projects with a combined nameplate rating of 577 MW and an additional 50 MW of CSPP wind power 
projects not on-line and scheduled to come on-line by year-end 2016.  In addition to its power purchase arrangements with wind 
power generators, Idaho Power has contracts for the purchase of power from other CSPP and non-CSPP renewable generation 

57

 
 
 
 
 
 
 
 
 
 
sources, such as biomass, solar, small hydroelectric projects, and two geothermal projects.  As of February 5, 2016, Idaho 
Power had contracts to purchase 364 MW of energy from solar projects not yet on-line and 9 MW of energy from hydroelectric 
projects not yet on-line.  All of the solar projects have estimated on-line dates no later than year-end 2016, though with the 
extension of federal solar tax credit availability, it is likely the on-line date for some of the projects will extend into 2017.  The 
following tables sets forth, as of February 5, 2016, the number and nameplate capacity of Idaho Power's signed CSPP-related 
agreements.  These agreements have original contract terms ranging from one to 35 years.

Status
On-line as of February 5, 2016
Contracted and projected to come on-line by June 1, 2017

Number of
CSPP Contracts
109
28

Nameplate
Capacity (MW)
784
423

Pursuant to the requirements of PURPA, the IPUC and OPUC have each issued orders and rules regulating Idaho Power's 
purchase of power from CSPP facilities.  A key component of the PURPA power purchase contracts is the energy price 
contained within the agreements.  Regulatory-mandated execution of PURPA agreements can result in Idaho Power acquiring 
energy that it does not need to serve customer loads at above wholesale market prices and require additional operational 
integration measures, thus increasing costs to Idaho Power's customers.  Integration of these sources of power into Idaho 
Power's portfolio does not eliminate Idaho Power's need to construct facilities and infrastructure that provide reliable power.  
For instance, at the time Idaho Power reached its all-time system peak demand of 3,407 MW on July 2, 2013, wind resources 
on Idaho Power's system, representing roughly 675 MW of nameplate capacity (including non-PURPA wind) were contributing 
only 57 MW of power due to lack of wind.  As the volume of CSPP purchases increases under PURPA, the magnitude of the 
costs and integration issues also increases.  Substantially all PURPA power purchase costs are recovered through base rates and 
Idaho Power's PCA mechanisms, and thus the primary impact of PURPA agreements is on customer rates.  

In light of the volume of intermittent generation Idaho Power is required to purchase pursuant to existing PURPA power 
purchase agreements and the substantial increase in volume of proposed new solar generation facilities seeking power purchase 
agreements with Idaho Power, in January 2015 Idaho Power filed an application with the IPUC requesting that the IPUC issue 
an order directing that the maximum required term for prospective PURPA power purchase agreements be reduced from 20 
years to two years.  In its application, Idaho Power stated that the requested modification to terms of PURPA energy purchases 
is necessary to prevent harm to Idaho Power's customers that may result from entering into additional long-term, fixed-rate 
purchase agreements when Idaho Power predicts that there is no need for new generation capacity through 2021.  In February 
2015, the IPUC issued an order reducing the maximum contract term of certain future PURPA power purchase agreements from 
20 years to five years during the pendency of the proceedings.  In August 2015, the IPUC issued an order reducing the length of 
PURPA contracts that involve avoided-cost-based pricing to two years.

For the Oregon jurisdiction, on April 24, 2015, Idaho Power made filings with the OPUC requesting, among other things, a 
reduction in the term of standard PURPA power purchase agreements from 20 years to two years for projects above 100 kW, 
and a temporary suspension of Idaho Power's obligation to enter into new fixed-price standard PURPA agreements during the 
pendency of the proceedings.  On June 23, 2015, the OPUC issued an order denying Idaho Power’s request for a temporary 
suspension but reduced the eligibility cap for standard contracts from 10 MW to 3 MW on a temporary basis during the 
pendency of the proceedings.  The current phases in these proceedings have been fully submitted and are awaiting a ruling by 
the OPUC.

58

 
 
 
 
 
 
 
 
 
 
   
ENVIRONMENTAL MATTERS

Overview

Idaho Power is subject to a broad range of federal, state, regional, and local laws and regulations designed to protect, restore, 
and enhance the environment, including the Clean Air Act (CAA), the CWA, the Resource Conservation and Recovery Act, the 
Toxic Substances Control Act, the Comprehensive Environmental Response, Compensation and Liability Act, and the 
Endangered Species Act (ESA), among other laws.  These laws are administered by a number of federal, state, and local 
agencies.  In addition to imposing continuing compliance obligations and associated costs, these laws and regulations provide 
authority to regulators to levy substantial penalties for noncompliance, injunctive relief, and other sanctions.  Idaho Power's 
three co-owned coal-fired power plants and three natural gas-fired combustion turbine power plants are subject to many of 
these regulations.  Idaho Power's 17 hydroelectric projects are also further subject to a number of water discharge standards and 
other environmental requirements.

Compliance with current and future environmental laws and regulations may:

• 
• 
• 
• 
• 

increase the operating costs of generating plants;
increase the construction costs and lead time for new facilities;
require the modification of existing generating plants, which could result in additional costs;
require the curtailment or shut-down of existing generating plants; or
reduce the output from current generating facilities.

Current and future environmental laws and regulations will increase the cost of operating fossil fuel-fired generation plants and 
constructing new generation and transmission facilities, in large part through the substantial cost of permitting activities and the 
required installation of additional pollution control devices.  In many parts of the United States, some higher-cost, high-
emission coal-fired plants have ceased operation or the plant owners have announced a near-term cessation of operation, as the 
cost of compliance makes the plants uneconomical to operate.  The decision to agree to cease operation of the Boardman coal-
fired plant, in which Idaho Power owns a 10 percent interest, by the end of 2020, was based in part on the significant future cost 
of compliance with environmental laws and regulations. 

In addition to increasing costs generally, these environmental laws and regulations could affect IDACORP's and Idaho Power's 
results of operations and financial condition if the costs associated with these environmental requirements and early plant 
retirements cannot be fully recovered in rates on a timely basis.  Part I, Item 1 - “Business - Utility Operations - Environmental 
Regulation and Costs” in this report includes a summary of Idaho Power's expected capital and operating expenditures for 
environmental matters during the period from 2016 to 2018.  Given the uncertainty of future environmental regulations and 
technological advances, Idaho Power is unable to predict its environmental-related expenditures beyond 2018, though they 
could be substantial.

Endangered Species Act Matters

Overview: The listing of a species of fish, wildlife, or plants as threatened or endangered under the ESA may have an adverse 
impact on Idaho Power's ability to construct generation, transmission, or distribution facilities or relicense or operate its 
hydroelectric facilities.  When a species is added to the federal list of threatened and endangered species, it is protected from 
“take,” which is defined to include harming the species.  The ESA directs that, concurrent with a designation of a threatened or 
endangered species, and where prudent and determinable, the applicable agencies also designate “any habitat of such species 
which is then considered to be critical habitat.”  The ESA also provides that each federal agency must ensure that any action 
they authorize, fund, or carry out is not likely to jeopardize the continued existence of a listed species or result in the 
destruction or adverse modification of its critical habitat.  If an action is determined to result in adverse modification of critical 
habitat, the federal agency must adopt changes to the proposed action to avoid the adverse modification.  These changes are 
often quite extensive and can affect the size, scope, and even the feasibility of a project moving forward.  In February 2016, the 
USFWS and the NMFS issued a set of regulatory and policy changes relating to critical habitat and adverse modification 
determinations under the ESA.  While the ultimate impact of implementation of those changes is yet to be determined, taken as 
a whole, Idaho Power believes that the changes could result in the applicable agencies having greater authority in making 
designations of critical habitat and could increase the likelihood of adverse modification determinations. 

The construction of generation, transmission, or distribution facilities and the relicensing of Idaho Power's hydroelectric 
projects can be federally authorized actions that fall under the ESA.  There are a number of threatened or endangered species 
within Idaho Power's service area and within or near proposed transmission line routes, including the slickspot peppergrass and 

59

 
 
 
 
 
 
 
 
 
the Washington ground squirrel.  Further, there are a number of ESA-listed fish and other aquatic species located in waterways 
in which Idaho Power has hydroelectric facilities, including fall Chinook salmon, bull trout, Bliss Rapids snail, and Snake River 
physa snail.  To date, efforts to protect these and other listed species have not significantly affected generation levels or 
operating costs at any of Idaho Power's hydroelectric facilities.  However, the ongoing relicensing of the HCC presents 
endangered species and fisheries issues that may require operational adjustments and could adversely impact the amount of 
output from hydroelectric dams, potentially causing Idaho Power to rely on more expensive sources for power generation or 
market purchases. 

Non-Listing of Greater Sage Grouse: In 2010, the U.S. Fish and Wildlife Service announced that listing of the greater sage 
grouse as threatened or endangered under the Endangered Species Act was warranted but precluded by higher priority listing 
actions.  Due to the presence of sage grouse in the vicinity of the Boardman-to-Hemingway and Gateway West 500-kV 
transmission lines, siting of these projects has required more extensive, costly, and time consuming evaluation, permitting, and 
engineering.  Listing of the greater sage grouse as threatened or endangered would have resulted in the need for a Section 7 
consultation under the Endangered Species Act, increasing the cost and time requirements for the permitting of these 
transmission projects.  After evaluating scientific and other information regarding the greater sage-grouse, the U.S. Fish and 
Wildlife Service determined in September 2015 that protection for the greater sage-grouse under the Endangered Species Act is 
no longer warranted and withdrew the species from the candidate species list.  This determination does not reduce the scope or 
magnitude of the consideration of sage grouse issues, or possible mitigation requirements associated with sage grouse, in Idaho 
Power's separate permitting processes for the transmission lines.  It does, however, eliminate the requirement for a Section 7 
consultation with the U.S. Fish and Wildlife Service under the ESA.

ESA Issues Related to Specific Projects: 

Hells Canyon Relicensing Project: In 2007, the FERC requested initiation of formal consultation under the ESA with the NMFS 
and the USFWS regarding potential effects of HCC relicensing on several listed aquatic and terrestrial species.  Formal 
consultation has yet to be initiated and the NMFS and the USFWS continue to gather and consider information relative to the 
effects of relicensing on relevant ESA listed species. Idaho Power continues to cooperate with the USFWS, the NMFS, and the 
FERC in an effort to address ESA concerns.  In December 2004, Idaho Power and eleven other parties, including NMFS and 
the USFWS, entered into an interim agreement that addresses the effects of the ongoing operations of the HCC on ESA listed 
species pending the relicensing of the project.  At the conclusion of formal consultation and with the issuance of biological 
opinions by the NMFS and the USFWS and an operating license by the FERC, Idaho Power may be required to implement 
additional measures or further modify or adjust operations to comply with Section 7 of the ESA.  The issuance of a final 
biological opinion during 2016 is unlikely. 

Boardman-to-Hemingway and Gateway West Transmission Projects: Slickspot peppergrass was listed as threatened by the 
USFWS in 2009.  In May 2011, the USFWS issued a proposed rule to designate critical habitat for the slickspot peppergrass 
and proposed to designate approximately 58,000 acres of critical habitat in four southeast Idaho counties.  Most of the species is 
located on federal land.  Additionally, the Washington ground squirrel is considered a “candidate species” under the ESA.  The 
existence of slickspot peppergrass and Washington ground squirrel within or near the proposed routes for the Boardman-to-
Hemingway and Gateway West projects is impacting, and Idaho Power expects it to continue to impact, the cost and timing of 
permitting and construction of the projects.  The listing of either species would result in the need for a Section 7 consultation 
under the ESA, which would increase the cost of obtaining permits for the project and could further delay the in-service date of 
the project.  

Climate Change and the Regulation of Greenhouse Gas (GHG) Emissions

Overview: Long-term climate change could significantly affect Idaho Power's business in a variety of ways, including: 

• 
• 

• 
• 

changes in temperature and precipitation could affect customer demand and energy loads;
extreme weather events could increase service interruptions, outages, maintenance costs, and the need for additional 
backup systems, and can affect the supply of, and demand for, electricity and natural gas, which may impact the price 
of those and other commodities; 
changes in the amount and timing of snowpack and stream flows could adversely affect hydroelectric generation; 
legislative and/or regulatory developments related to climate change could affect plants and operations, including 
restrictions on the construction of new generation resources, the expansion of existing resources, or the operation of 
generation resources; and 

60

 
 
 
 
 
 
 
 
 
• 

consumer preference for, and resource planning decisions requiring, renewable or low GHG-emitting sources of 
energy could impact usage of existing generation sources and require significant investment in new generation and 
transmission infrastructure. 

Federal and state regulations pertaining to GHG emissions under the CAA have raised uncertainty about the future viability of 
fossil fuels, specifically coal, as an economical energy source for new and existing electric generation facilities because many 
new technologies for reducing CO2 emissions from coal, including carbon capture and storage, are still in the development stage 
and are not yet proven.  Stringent emissions standards could result in significant increases in capital expenditures and operating 
costs, which may accelerate the retirement of coal-fired units and create power system reliability issues.  Some higher-cost, 
high-emission coal-fired plants have ceased operation or the plant owners have announced a near-term cessation of operation, 
as the cost of compliance makes the plants uneconomical to operate, particularly in light of relatively low natural gas prices that 
decrease the cost to operate natural gas-fired power plants. 

A variety of factors contribute to the financial, regulatory, and logistical uncertainties related to GHG reductions.  These include 
the specific GHG emissions limits imposed, the timing of implementation of these limits, the level of emissions allowances 
allocated and the level that must be purchased, the purchase price of emissions allowances, the development and commercial 
availability of technologies for renewable energy and for the reduction of emissions, the degree to which offsets may be used 
for compliance, provisions for cost containment (if any), the impact on coal and natural gas prices, and the timing and amount 
of cost recovery through rates.  Accordingly, Idaho Power cannot predict the effect on its results of operations, financial 
position, or cash flows of any GHG emission or other climate change requirements that may be adopted, although the costs to 
implement and comply with any such requirements could be substantial.  A more detailed discussion of legislative and 
regulatory developments related to climate change follows. 

National GHG Initiatives; Final Rule Under CAA Section 111(d): The EPA has become increasingly active in the regulation 
of GHGs.  The EPA's endangerment finding in 2009 that GHGs threaten public health and welfare resulted in the enactment of 
a series of EPA regulations to address GHG emissions. 

In May 2010, the EPA issued the “Tailoring Rule,” which set thresholds for GHG emissions that define when permits are 
required for new and existing industrial facilities.  The final rule “tailors” the requirements of these CAA permitting programs 
to limit which facilities will be required to obtain PSD and Title V permits.  The rules require the use of "best available control 
technology" for GHG emissions if a new major source or modification of an existing major source is projected to result in GHG 
emissions of at least 75,000 tons per year (CO2 equivalent).  In addition, Title V permit renewals or modifications for existing 
major sources must include applicable requirements relating to GHGs.  While the rules are complex, Idaho Power believes that 
its owned and co-owned fossil fuel-fired generation plants are, as of the date of this report, in compliance with the GHG 
Tailoring Rule.

In June 2014, the EPA released, under Section 111(d) of the CAA, a proposed rule for addressing greenhouse gas emissions 
from existing fossil fuel-fired electric generating units (EGUs).  According to the EPA, the proposed rule was designed to 
achieve a 30 percent reduction in CO2 emissions from the power sector.  The EPA's proposal required that states meet their 
respective goals by 2030.  On August 3, 2015, the EPA released the final rule under Section 111(d) of the CAA, referred to as 
the Clean Power Plan.  The final rule contains several changes from the proposed rule.  The final rule requires states to adopt 
plans to collectively reduce 2005 levels of power sector CO2 emissions by 32% by the year 2030.  The final rule provides states 
until September 2018 to submit implementation plans and until 2022 (rather than 2020 under the proposed rule) to begin 
achieving emissions reductions. 

In the final rule, the EPA used a procedure to determine the "best system of emission reduction" that was different than under 
the proposed rule, establishing two sets of uniform emissions rates (one for coal-fired EGUs and one for natural gas-fired 
EGUs) and developing state limits based on the number and type of affected EGUs in each state.  For the final rule, the EPA 
analyzed emissions reductions that affected EGUs could achieve by applying three “building blocks,” that the EPA concluded 
met the statutory standard “best system of emission reduction”: 

•  Building Block 1: Improving heat rate at existing coal-fired steam EGUs;
•  Building Block 2: Shifting electricity generation from higher-emitting coal-fired steam EGUs to lower-emitting 

existing natural gas combined cycle generation; and

•  Building Block 3: Shifting generation from affected fossil fuel-fired EGUs to new zero-emitting renewable energy 

generation.

61

 
 
 
 
 
 
 
 
 
The EPA also changed its approach to calculating the emissions targets.  In the final rule, the EPA specified nationwide “sub-
category” CO2 emission performance standards applicable to affected steam coal-fired EGUs (1,305 lbs/MWh) and stationary 
natural gas combustion turbines (771 lbs/MWh).  There are a number of methods states may use to achieve compliance.  States 
may simply require affected EGUs to meet these emission rate standards.  As in the proposed rule, the EPA also calculated 
statewide target emission rates, though the method used to calculate the state targets was different in the final rule.  The EPA 
also included equivalent mass-based limits (in short tons) for each state, with the intent of making it easier for states to adopt 
intrastate or interstate allowance-based emissions trading programs.  Other modifications to the proposed rule included an 
allowance for increased use of thermal generation due to hydroelectric plant variability, and adjustments for plants like the 
Langley Gulch natural gas power plant that commenced commercial operations during 2012. 

Idaho Power's owned and co-owned generation facilities are in the states of Idaho, Nevada, Oregon, and Wyoming.  Idaho 
Power is evaluating the impact that the final rule will have on its operations in those states.  Idaho Power is working with state 
representatives, neighboring utilities, and others as it analyzes the rule and prepares for compliance.  However, because the rule 
is premised on state implementation plans, the terms of which Idaho Power does not control, as of the date of this report Idaho 
Power is unable to determine the financial or operational impacts of the final rule.  Further, on February 9, 2016, the U.S. 
Supreme Court issued an order staying the implementation of the rule pending the completion of certain legal challenges, which 
has an uncertain impact on the ultimate timeline for implementation of the rule.  In its 2015 IRP, Idaho Power included a 
number of scenarios for the potential outcome of the then-pending 111(d) rulemaking process, and in the future will continue to 
make operational decisions based on the implementation of the final rule and any compliance deadlines ultimately imposed.  

State GHG Initiatives and Idaho Power’s Voluntary GHG Reduction Initiative: In August 2007, the Oregon legislature 
enacted legislation setting goals of reducing GHG levels to 10 percent below 1990 levels by 2020 and at least 75 percent below 
1990 levels by 2050.  Oregon imposes GHG emission reporting requirements on facilities emitting 2,500 metric tons or more of 
CO2 equivalent annually.  The Boardman coal-fired power plant located in Oregon, in which Idaho Power is a 10-percent 
owner, is subject to and in compliance with Oregon's GHG reporting requirements but is scheduled to cease coal-fired 
operations in 2020. 

The State of Idaho has not passed legislation specifically regulating GHGs, but in May 2007 Idaho’s Governor issued Executive 
Order 2007-05, which directed the Idaho Department of Environmental Quality to work with the state government to 
implement GHG reductions within each agency, complete a statewide emissions inventory, and provide recommendations to the 
Governor, among other tasks.  Wyoming and Nevada similarly have not enacted legislation to regulate GHG emissions and do 
not have a reporting requirement, but they are members of the Climate Registry, a national, voluntary GHG emission reporting 
system.  The Climate Registry is a collaboration aimed at developing and managing a common GHG emission reporting system 
across states, provinces, and tribes to track GHG emissions nationally.  All states for which Idaho Power has traditional fuel 
generating plants (i.e. Idaho, Oregon, Wyoming, and Nevada) are members of the Climate Registry.  Idaho Power is engaged in 
voluntary GHG emissions intensity reduction efforts, which is discussed in Part I, Item 1 - “Business - Utility Operations - 
Environmental Regulation and Costs." 

Clean Air Act Matters

Overview: In addition to the CAA developments related to GHG emissions described above, several other regulatory programs 
developed under the CAA apply to Idaho Power.  These include the final Mercury and Air Toxics Standards (MATS), National 
Ambient Air Quality Standards (NAAQS), NSR/PSD Rules, and the Regional Haze Rule. 

MATS Implementation: The final Mercury and Air Toxics Standards (MATS) rule under the CAA, previously referred to as the 
Utility MACT Rule, was issued in February 2012.  The final rule established emission limits for hazardous air pollutants from 
new and existing coal-fired and oil-fired steam electric generating units.  The MATS rule provided that sources must be in 
compliance with emission limits by April 2015.  Idaho Power and the plant co-owners have installed mercury continuous 
emission monitoring systems on all of the coal-fired units at the Jim Bridger, Boardman, and North Valmy coal-fired generating 
plants, along with control technology to reduce mercury, acid gases, and particulate matter emissions for purposes of 
compliance with the MATS rule.  Idaho Power believes that as of the date of this report the coal-fired plants are in compliance 
with the MATS rule.  Legal challenges relating to the MATS rule, to which Idaho Power is not a party and pursuant to which 
the EPA is performing a court-mandated cost analysis for the rule, are pending. 

62

 
 
 
 
 
 
 
 
 
National Ambient Air Quality Standards: The CAA requires the EPA to set ambient air quality standards for six "criteria" 
pollutants considered harmful to public health and the environment.  These six pollutants are carbon monoxide, lead, ozone, 
particulate matter, nitrogen dioxide, and sulfur dioxide. States are then required to develop emission reduction strategies 
through State Implementation Plans, or SIPs, based on attainment of these ambient air quality standards.  Recent developments 
and pending actions related to certain of those items relevant to Idaho Power include the following: 

•  NOx. In 2010, the EPA adopted a new NAAQS for NOx at a level of 100 parts per billion averaged over a 1-hour 
period.  In connection with the new NAAQS, in February 2012 the EPA issued a final rule designating all of the 
counties in Idaho, Nevada, Oregon, and Wyoming where Idaho Power owns or has an interest in a natural gas or coal-
fired power plant as “unclassifiable/attainment” for NOx.  The EPA indicated it will review the designations after 2015, 
when three years of air quality monitoring data are available, and may formally designate the counties as attainment or 
non-attainment for NOx.  A designation of non-attainment may increase the likelihood that Idaho Power would be 
required to install costly pollution control technology at one or more of its plants.  As the designations have not yet 
been finalized, as of the date of this report Idaho Power is unable to predict the impact of the NAAQS for NOx on its 
operations.  However, the costs of installation and implementation of any additional pollution reduction technology 
could be substantial.

• 

SO2. In 2010, the EPA adopted a new NAAQS for SO2 at a level of 75 parts per billion averaged over a one-hour 
period.  In 2011, the states of Idaho, Nevada, Oregon, and Wyoming sent letters to the EPA recommending that all 
counties in these states be classified as "unclassifiable" under the new one-hour SO2 NAAQS because of a lack of 
definitive monitoring and modeling data.  In February 2013, the EPA issued letters to the states of Idaho and Oregon, 
finding that the most recent air quality data for those states showed no violations of the 2010 SO2 standard.  As a result, 
the EPA is waiting to propose designation actions for those states, and is likely to proceed with designation actions 
once additional data are gathered.  Idaho Power expects that designations for Nevada and Wyoming will also be 
addressed in a separate future action.

•  Ozone. In late 2014, the EPA issued a proposed rule that would update the ozone standard under the CAA, from 75 

parts per billion over an eight-hour period to 65 to 70 parts per billion over an eight-hour period.  On October 1, 2015, 
the EPA issued a final rule lowering the national ozone standard under the CAA to 70 parts per billion.  The EPA stated 
that the vast majority of U.S. counties will meet the standards by 2025 with federal and state rules and programs now 
in place or underway.  The EPA's plan provides for finalizing non-attainment designations in 2017, and it plans to 
propose rules and guidance over the next year to help states with potential non-attainment areas implement the revised 
standards.  Non-attainment areas will have until 2020 to late 2037 to meet the new standard, with attainment dates 
varying based on the ozone level in the area.  Due to high levels of background ozone, which can be caused by factors 
such as elevation, vegetation, wildfire, and international transport, attainment in areas within the Intermountain West 
may be difficult, and the formulation of state implementation plans to bring an area into compliance with the new 
standard may be challenging due to the existence of ozone caused by factors outside of local control.  If the EPA were 
to make non-attainment determinations in areas where Idaho Power owns or co-owns power plants, or proposes to 
construct power plants, the state implementation plan for those areas could result in changes to the nature and 
frequency of operation of existing generation plants and make more difficult or costly the construction of new power 
generation plants.  However, as the EPA has not yet made attainment and non-attainment designations, Idaho Power is 
unable to predict the potential impact of the standard on its operations.  Idaho Power will seek to work with state 
regulators on implementation plans for any non-attainment areas, in an effort to reduce the potential adverse impact on 
Idaho Power's operation of its existing power generation plants and construction of future facilities.

Because the EPA has not yet completed the designation of areas as attaining or not attaining the NAAQS for NOx, SO2, and 
ozone, Idaho Power is unable to predict what impact the adoption and implementation of these standards may have on its 
operations, though it does expect at least some increases in capital and operating costs from the standards if areas in which 
Idaho Power operate, or adjacent areas, receive non-attainment designations.

Regional Haze Rules: In accordance with federal regional haze rules under the CAA, coal-fired utility boilers are subject to 
regional haze - best available retrofit technology (RH BART) if they were built between 1962 and 1977 and affect any "Class 
I" (wilderness) areas.  This includes all four units at the Jim Bridger and the Boardman coal-fired plants.  The RH BART rules 
would have required installation of a suite of emissions controls at the Boardman plant; however, in December 2010 the Oregon 
Environmental Quality Commission approved a plan to install a less costly suite of environmental controls and cease coal-fired 
operations at the Boardman power plant no later than December 31, 2020.

63

 
 
 
 
 
 
 
 
 
In December 2009, the Wyoming Department of Environmental Quality (WDEQ) issued a RH BART permit to PacifiCorp as 
the operator of the Jim Bridger plant.  As part of the WDEQ's long term strategy for regional haze, the permit requires that 
PacifiCorp install SCR equipment for NOx control at Jim Bridger units 3 and 4 by December 31, 2015 and December 31, 2016, 
respectively, and submit an application by December 31, 2017 to install add-on NOx controls at Jim Bridger unit 2 by 2021 and 
unit 1 by 2022.  In November 2010, PacifiCorp and the WDEQ signed a settlement agreement under which PacifiCorp agreed 
to the timing and nature of the controls.  The settlement agreement was conditioned on the EPA ultimately approving those 
portions of the Wyoming Regional Haze SIP that are consistent with the terms of the settlement agreement.  On January 10, 
2014, the EPA approved Wyoming's Regional Haze SIP as to the Jim Bridger plant, with the NOx control compliance dates set 
forth in the settlement agreement.  Several interested parties have appealed the EPA's decisions on Wyoming's RH SIP on 
various grounds.  Idaho Power has not appealed the EPA's decisions but has intervened in the proceedings to participate if and 
to the extent the Jim Bridger plant could be affected.

New Source Review / Prevention of Significant Deterioration: NSR/PSD is a pre-construction permitting program that 
requires a stationary source of air pollution to obtain a permit before beginning construction.  The purpose of the program is to 
ensure that air quality is not significantly degraded by the addition of new and modified facilities, industrial boilers, and power 
plants.  Under current NSR provisions of the CAA, any facility that emits regulated pollutants is required to obtain a permit 
from the EPA or a state regulatory equivalent before beginning the construction of a stationary source that will emit regulated 
pollutants, or before modifying an existing stationary source that will increase its emission levels.  Since 1999, the EPA and the 
U.S. Department of Justice have been pursuing a national enforcement initiative focused on the compliance status of coal-fired 
power plants with the NSR permitting requirements and NSPS under the CAA.  This initiative has resulted in both enforcement 
litigation and significant settlements with a large number of public utilities and other owners of coal-fired power plants across 
the country.  As part of an industry-wide assessment of compliance with NSR and NSPS, EPA has sought information from a 
number of utilities regarding their coal-fired generating facilities.  In 2003, the EPA sent information requests pursuant to the 
CAA to the Jim Bridger plant, seeking information relevant to NSR and NSPS compliance.  Additional requests were received 
by the Boardman plant in 2008, with a follow up request for information in 2009 and by the Valmy plant in 2009.  In September 
2010, the EPA issued a Notice of Violation to Portland General Electric Company, the operator of the Boardman plant, alleging 
that Portland General Electric Company violated the NSPS under Section 111 of the CAA and operating permit requirements 
under Title V of the CAA at the Boardman coal-fired plant as a result of certain modifications made to the plant in 1998 and 
2004.  To date, the EPA has not taken action on the Notice of Violation, and a related private lawsuit under the CAA was settled 
in 2011. 

Regulation of Coal Combustion Residuals 

The Resource Conservation and Recovery Act (RCRA) is a federal statute regulating the generation, treatment, storage, and 
disposal of solid and hazardous wastes.  In December 2014, the EPA signed a final rule for the disposal of coal combustion 
residuals (CCRs), which are regulated under the RCRA.  The rule established structural integrity design criteria and requires 
that owners and operators of coal-fired power plants periodically conduct a number of structural integrity related assessments 
and install monitoring apparatus.  The final rule also imposes location restrictions on impoundments, requires the closure of 
impoundments that cannot meet the location restrictions, imposes liner design criteria and operating requirements, and imposes 
certain record keeping and notification requirements.  Additionally, the EPA's rule imposed obligations associated with the 
closure of CCR impoundments.  Idaho Power and its co-owners of coal-fired units performed engineering and cost studies to 
determine the impacts of the rule, and during 2015 Idaho Power recorded an increase of approximately $5 million in its asset 
retirement obligation for the Jim Bridger coal-fired plant.  The amounts recorded for asset retirement obligations for Idaho 
Power's other jointly-owned coal-fired plants were not impacted by the EPA's new rule.

64

 
 
 
 
 
 
 
 
 
Clean Water Act Matters

Definition of “Waters of the United States” Under the CWA:  On August 28, 2015, the EPA's and U.S. Army Corps of 
Engineers' final rule defining the phrase "waters of the United States" under the CWA became effective. Idaho Power believes 
that the final rule potentially expands federal jurisdiction under the CWA beyond traditional navigable waters, interstate waters, 
territorial seas, tributaries, and adjacent wetlands, to a number of other waters, including waters with a "significant nexus" to 
those traditional waters.  As a result of the potential expansion, the final rule may result in additional permitting and regulatory 
requirements under multiple provisions of the CWA.  Idaho Power has analyzed the final rule and expects that while it may 
incur additional permitting and other costs associated with the rule, the aggregate amount of increased costs is unlikely to have 
a material adverse effect on Idaho Power's operations or financial condition, in part due to the relatively arid climate of Idaho 
Power's service area and the existing application of the CWA to most of Idaho Power's facilities, including its hydroelectric 
plants. 

On October 9, 2015, the United States Court of Appeals for the Sixth Circuit issued a nationwide stay of the final waters of the 
United States rule from becoming effective.  In response to the Sixth Circuit's decision, the EPA resumed nationwide use of the 
agency's prior regulations defining the term “waters of the United States.”  The EPA stated that those regulations will be 
implemented as they were prior to August 27, 2015, by applying relevant case law, applicable policy, and the best science and 
technical data on a case-by-case basis in determining which waters are protected by the Clean Water Act.

Regulation of Cooling Water Intake Structures: The CWA generally prohibits the discharge of any "pollutant" from a point 
source into waters of the United States without a permit.  Pollutants are broadly defined to include changes in temperature. 
Section 316(b) of the CWA requires that National Pollutant Discharge Elimination System permits for facilities with cooling 
water intake structures ensure that the location, design, construction, and capacity of the structures employ the best technology 
available (BTA) to minimize harmful impacts on the environment, such as the removal of fish, fish larvae, marine mammals, 
and other aquatic organisms from waters of the U.S.  In May 2014, the EPA issued final rules that establish requirements under 
Section 316(b) of the CWA for existing power generation facilities that withdraw more than 2 million gallons per day of water 
from waters of the U.S. and use at least 25 percent of the water they withdraw exclusively for cooling purposes.  Given the 
nature of its co-owned coal-fired plants, Idaho Power expects that its cost to comply with the new rules will be nominal at the 
Jim Bridger power plant and that it will incur no costs related to the rule at the North Valmy and Boardman plants.  

Idaho Power is also addressing CWA issues associated with the relicensing of its HCC.  See “Relicensing of Hydroelectric 
Projects” in this MD&A for additional information on the impact of the CWA on that relicensing effort.

Effluent Limitation Guidelines and Standards:  In June 2013, the EPA issued proposed rulemaking to revise the technology-
based effluent limitation guidelines and standards under the CWA for water discharged from steam electric power plants, which 
includes coal-fired plants.  On September 30, 2015, the EPA issued the final rule, which established limits on the levels of 
specified metals in wastewater that can be discharged from steam electric power plants.  The EPA stated that it estimates that 
approximately 12 percent of steam electric power plants will incur some costs associated with the final rule.  Idaho Power has 
analyzed the final rule and, given the nature of its co-owned coal-fired plants, as of the date of this report does not anticipate 
that the rule will materially affect Idaho Power’s operations or financial condition. 

November 2015 Presidential Memorandum 

On November 3, 2015, President Obama issued a Presidential Memorandum directing the Departments of Defense, Interior and 
Agriculture, the Environmental Protection Agency, and all bureaus or agencies within them to avoid and then minimize harmful 
effects to land, water, wildlife, and other ecological resources caused by land- or water-disturbing activities, and to ensure that 
any remaining harmful effects are effectively addressed, consistent with existing mission and legal authorities.  The Presidential 
Memorandum requires agencies to adopt clear and consistent approaches for avoiding, minimizing, or compensating for 
impacts of agency activities and activities agencies approve under their jurisdiction.  The agencies also are required to develop 
institutionalized steps for implementing the Presidential Memorandum’s policy objectives. 

For mitigation, agencies are advised to adopt a "net benefit goal" for natural resource use, along with at least a "no net loss" 
policy of natural resources affected by federal actions, including permitting.  The PM prescribes the application of a mitigation 
hierarchy consisting of first avoiding, then minimizing, and finally compensating for impacts of applicable activities with a 
federal nexus.  Idaho Power expects that the relevant agencies will issue policies and guidelines during the next two years.  The 
policies and guidelines may result in additional costs associated with construction and maintenance activities on federal lands, 
including transmission projects.  To the extent Idaho Power operations affect any natural resources on federal lands, whether 

65

 
 
 
 
 
 
 
 
 
fish, wildlife, or plants, the company could face strict standards of “no net loss,” which could significantly increase costs 
depending on the type of resource impacted, such as listed species under the Endangered Species Act.  

Review of Federal Coal Leases

On January 15, 2016, the U.S. Department of the Interior announced that it would launch a comprehensive review to identify 
and evaluate potential reforms to the federal coal lease program.  The review is intended to address questions such as how, 
when, and where to lease coal resources, how to account for the environmental and public health impacts of federal coal 
production, and how to ensure taxpayers are earning a fair return for the use of the coal resources.  The U.S. Department of the 
Interior stated that it will not issue new coal leases during the pendency of the review, except under limited circumstances, but 
mining under existing leases will not be suspended during the review.  The Bridger Coal Mine, which mines and supplies coal 
to the Jim Bridger coal-fired power plant, currently leases its coal under a federal coal lease.  Any sizable expansion of the 
Bridger Coal Mine beyond its current leases is unlikely to occur during the U.S. Department of the Interior's coal lease review.  
Idaho Power believes that BCC has adequate reserves under existing leases to satisfy its coal delivery obligations to the Jim 
Bridger plant during the term of the existing coal supply contract through 2024, and that the Jim Bridger plant will otherwise 
have access to sufficient coal supplies for its operation for the foreseeable future.  However, depending on the outcome of the 
Department of the Interior's review, the availability of coal resources could decline and the cost of leases for coal resources 
could increase, which could increase the fuel cost for each of Idaho Power's co-owned coal-fired plants.  

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

When preparing financial statements in accordance with generally accepted accounting principles (GAAP), IDACORP’s and 
Idaho Power’s management must apply accounting policies and make estimates that affect the reported amounts of assets, 
liabilities, revenues, and expenses and related disclosure of contingent assets and liabilities.  These estimates often involve 
judgment about factors that are difficult to predict and are beyond management’s control.  Management adjusts these estimates 
based on historical experience and on other assumptions and factors that are believed to be reasonable under the circumstances.  
Actual amounts could materially differ from the estimates.  Management believes the accounting policies and estimates 
discussed below are the most critical to the portrayal of their financial condition and results of operations and require 
management’s most difficult, subjective, or complex judgments, often as a result of the need to make estimates about the effect 
of matters that are inherently uncertain and may change in subsequent periods.

Accounting for Rate Regulation

Entities that meet specific conditions are required by GAAP to reflect the impact of regulatory decisions in their consolidated 
financial statements and to defer certain costs as regulatory assets until matching revenues can be recognized.  Similarly, certain 
items may be deferred as regulatory liabilities.  Idaho Power must satisfy three conditions to apply regulatory accounting: (1) an 
independent regulator must set rates; (2) the regulator must set the rates to cover specific costs of delivering service; and (3) the 
service territory must lack competitive pressures to reduce rates below the rates set by the regulator.

Idaho Power has determined that it meets these conditions, and its financial statements reflect the effects of the different rate-
making principles followed by the jurisdictions regulating Idaho Power.  The primary effect of this policy is that Idaho Power 
had recorded $1.4 billion of regulatory assets and $418 million of regulatory liabilities at December 31, 2015.  Idaho Power 
expects to recover these regulatory assets from customers through rates and refund these regulatory liabilities to customers 
through rates, but recovery or refund is subject to final review by the regulatory bodies.  If future recovery or refund of these 
amounts ceases to be probable, or if Idaho Power determines that it no longer meets the criteria for applying regulatory 
accounting, or if accounting rules change to no longer provide for regulatory assets and liabilities, Idaho Power could be 
required to eliminate those regulatory assets or liabilities.  Either circumstance could have a material effect on Idaho Power’s 
financial condition or results of operations.

Income Taxes

IDACORP and Idaho Power use judgment and estimation in developing the provision for income taxes and the reporting of tax-
related assets and liabilities.  The interpretation of tax laws can involve uncertainty, since tax authorities may interpret such 
laws differently.  Actual income taxes could vary from estimated amounts and may result in favorable or unfavorable impacts to 
net income, cash flows, and tax-related assets and liabilities.

Idaho Power provides deferred income taxes related to its plant assets for the difference between income tax depreciation and 
book depreciation used for financial statement purposes.  Deferred income taxes for other items are provided for the temporary 

66

 
 
 
 
 
 
 
 
 
 
 
 
 
 
differences between the income tax and financial accounting treatment of such items.  Unless contrary to applicable income tax 
guidance, deferred income taxes are not provided for those income tax temporary differences where the prescribed regulatory 
accounting methods, or flow-through, direct Idaho Power to recognize the tax impacts currently for rate making and financial 
reporting.

Refer to Note 1 - “Summary of Significant Accounting Policies” and Note 2 - “Income Taxes” to the consolidated financial 
statements included in this report for additional information relating to income taxes.

Pension and Other Postretirement Benefits

Idaho Power maintains a tax-qualified, noncontributory defined benefit pension plan covering most employees, an unfunded 
nonqualified deferred compensation plan for certain senior management employees and directors called the Security Plan for 
Senior Management Employees (SMSP), and a postretirement benefit plan (consisting of health care and death benefits).

The costs IDACORP and Idaho Power record for these plans depend on the provisions of the plans, changing employee 
demographics, actual returns on plan assets, and several assumptions used in the actuarial valuations from which the expense is 
derived.  The key actuarial assumptions that affect expense are the expected long-term return on plan assets and the discount 
rate used in determining future benefit obligations.  Management evaluates the actuarial assumptions on an annual basis, taking 
into account changes in market conditions, trends, and future expectations.  Estimates of future stock market performance, 
changes in interest rates, and other factors used to develop the actuarial assumptions are uncertain, and actual results could vary 
significantly from the estimates.

The assumed discount rate is based on reviews of market yields on high-quality corporate debt.  Specifically, IDACORP and 
Idaho Power determined the discount rate for each plan through the construction of hypothetical portfolios of bonds selected 
from high-quality corporate bonds available as of December 31, 2015, with maturities matching the projected cash outflows of 
the plans.  Based on the results of this analysis, the discount rate used to calculate the 2016 pension expense will be increased to 
4.60 percent from the 4.25 percent used in 2015.

Rate-of-return projections for plan assets are based on historical risk/return relationships among asset classes.  The primary 
measure is the historical risk premium each asset class has delivered versus the yield on the Moody's AA Corporate Bond 
Index.  This historical risk premium is then added to the current yield on the Moody's AA Corporate Bond Index, and Idaho 
Power believes the result provides a reasonable prediction of future investment performance.  Additional analysis is performed 
to measure the expected range of returns, as well as worst-case and best-case scenarios.  Based on the current interest rate 
environment, current rate-of-return expectations are lower than the nominal returns generated over the past 20 years when 
interest rates were generally much higher.  The long-term rate of return used to calculate the 2016 pension expense will be 7.5 
percent, the same assumption as was used for 2015.  The long-term rate of return used in 2014 was 7.75 percent

Gross net periodic pension and other postretirement benefit cost for these plans totaled $51 million, $32 million, and $55 
million for the years ended December 31, 2015, 2014, and 2013, respectively, including amounts deferred as regulatory assets 
(see discussion below) and amounts allocated to capitalized labor.  For 2016, gross pension and other postretirement benefit 
costs are expected to total approximately $54 million, which takes into account the change in the discount rate noted above.

Had different actuarial assumptions been used, pension expense could have varied significantly.  The following table reflects 
the sensitivities associated with changes in the discount rate and rate-of-return on plan assets actuarial assumptions on historical 
and future pension and postretirement expense:

Discount rate

Rate of return

2016

2015
2016
(millions of dollars)

2015

Effect of 0.5% rate increase on net periodic benefit cost
Effect of 0.5% rate decrease on net periodic benefit cost

$

(6.9) $
7.6

(7.2) $
8.0

(2.9) $
2.9

(2.9)
3.0

Additionally, a 0.5 percent increase in the plans' discount rates would have resulted in a $69 million decrease in the combined 
benefit obligations of the plans as of December 31, 2015.  A 0.5 percent decrease in the plans' discount rates would have 
resulted in an $78 million increase in the combined benefit obligations of the plans as of December 31, 2015.

67

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The IPUC has authorized Idaho Power to account for its defined benefit pension plan expense on a cash basis, and to defer and 
account for accrued pension expense as a regulatory asset.  The IPUC acknowledged that it is appropriate for Idaho Power to 
seek recovery in its revenue requirement of reasonable and prudently incurred pension expense based on actual cash 
contributions.  In 2007, Idaho Power began deferring pension expense to a regulatory asset account to be matched with revenue 
when future pension contributions are recovered through rates.  At December 31, 2015, a total of $86 million of expense was 
deferred as a regulatory asset.  Approximately $24 million is expected to be deferred in 2016.  Idaho Power recorded pension 
expense in 2015, 2014, and 2013 of $19 million, $35 million, and $36 million, respectively.

Refer to Note 11 – “Benefit Plans” to the consolidated financial statements included in this report for additional information 
relating to pension and postretirement benefit plans.

Contingent Liabilities

An estimated loss from a loss contingency is charged to income if (a) it is probable that a liability had been incurred at the date 
of the financial statements and (b) the amount of the loss can be reasonably estimated.  If a probable loss cannot be reasonably 
estimated, no accrual is recorded but disclosure of the contingency, if material, in the notes to the financial statements is 
required.  Gain contingencies are not recorded until realized.  IDACORP and Idaho Power have a number of unresolved issues 
related to regulatory and legal matters.  If the recognition criteria have been met, liabilities have been recorded.  Estimates of 
this nature are highly subjective and the final outcome of these matters could vary significantly from the amounts that have 
been included in the financial statements.

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-09, Revenue 
from Contracts with Customers (Topic 606).  ASU 2014-09 is intended to enable users of financial statements to better 
understand and consistently analyze an entity's revenue across industries, transactions, and geographies.  Under the ASU, 
recognition of revenue occurs when a customer obtains control of promised goods or services.  In addition, the ASU requires 
disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.  The 
amendments in ASU 2014-09 are effective for annual reporting periods beginning after December 15, 2017, including interim 
periods within that reporting period, with early adoption permitted one year earlier.  The guidance permits two implementation 
approaches, one requiring retrospective application of the new standard with restatement of prior years and one requiring 
prospective application of the new standard including a cumulative-effect adjustment with disclosure of results under old 
standards. IDACORP and Idaho Power are currently evaluating the impact of ASU 2014-09 on their financial statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis, 
which revises the consolidation model that reporting entities use when determining what entities are to be consolidated.   The 
amendment focus on limited partnerships and similar legal entities, and is effective for interim and annual reporting periods 
beginning after December 31, 2015.  IDACORP and Idaho Power do not believe the impact of ASU 2015-02 on their financial 
statements will be significant.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and 
Measurement of Financial Assets and Financial Liabilities, which revises the accounting related to the classification and 
measurement of investments in equity securities and the presentation of certain fair value changes for financial liabilities 
measured at fair value.  It also amends certain disclosure requirements associated with the fair value of financial instruments.  
The new standard is effective for fiscal years beginning after December 15, 2017, including interim periods therein.  IDACORP 
and Idaho Power are currently evaluating the impact of ASU 2016-01 on their financial statements.

68

 
 
 
 
 
 
 
 
 
 
 
ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

IDACORP and Idaho Power are exposed to market risks, including changes in interest rates, changes in commodity prices, 
credit risk, and equity price risk.  The following discussion summarizes these risks and the financial instruments, derivative 
instruments, and derivative commodity instruments sensitive to changes in interest rates, commodity prices, and equity prices 
that were held at December 31, 2015.  IDACORP has not entered into any of these market-risk-sensitive instruments for trading 
purposes.

Interest Rate Risk

IDACORP and Idaho Power manage interest expense and short- and long-term liquidity through a combination of fixed rate 
and variable rate debt.  Generally, the amount of each type of debt is managed through market issuance, but interest rate swap 
and cap agreements with highly-rated financial institutions may be used to achieve the desired combination.

Variable Rate Debt:  As of December 31, 2015, IDACORP and Idaho Power had $33.2 million and $14.2 million, respectively, 
in net floating rate debt.  The fair market value of this debt was a respective $33.2 million and $14.2 million.  Assuming no 
change in financial structure, if variable interest rates were to average one percentage point higher than the average rate on 
December 31, 2015, annual interest expense would increase and pre-tax earnings would decrease by approximately $0.3 million 
for IDACORP and $0.1 million for Idaho Power.  

Fixed Rate Debt:  As of December 31, 2015, IDACORP and Idaho Power had $1.7 billion in fixed rate debt, with a fair market 
value equal to $1.8 billion.  These instruments are fixed rate and, therefore, do not expose the companies to a loss in earnings 
due to changes in market interest rates.  However, the fair value of these instruments would increase by approximately $246 
million if market interest rates were to decline by one percentage point from their December 31, 2015 levels.

Commodity Price Risk

IDACORP's exposure to changes in commodity prices is related to Idaho Power's ongoing utility operations that produce 
electricity to meet the demand of its retail electric customers.  These effects of changes in commodity prices on Idaho Power are 
mitigated in large part by Idaho Power's Idaho and Oregon PCA mechanisms.  To supplement its generation resources and 
balance its supply of power with the demand of its retail customers, Idaho Power participates in the wholesale marketplace.  
These purchased power arrangements allow Idaho Power to respond to fluctuations in the demand for electricity and variability 
in generating plant operations.  Idaho Power also enters into arrangements for the purchase of fuel for natural gas and coal-fired 
generating plants.  These contracts for the purchase of power and fuel expose Idaho Power to commodity price risk.

A number of factors associated with the structure and operation of the energy markets influence the level and volatility of prices 
for energy commodities and related derivative products.  The weather is a major uncontrollable factor affecting the local and 
regional demand for electricity and the availability and cost of power generation.  Other factors include the occurrence and 
timing of demand peaks due to seasonal, daily, and hourly power demand; power supply; power transmission capacity; changes 
in federal and state regulation and compliance obligations; fuel supplies; and market liquidity.

The primary objectives of Idaho Power’s energy purchase and sale activity are to meet the demand of retail electric customers, 
to maintain appropriate physical reserves to ensure reliability, and to make economic use of temporary surpluses that may 
develop.  Idaho Power has adopted a risk management program, which has been reviewed and accepted by the IPUC, designed 
to reduce exposure to power supply cost-related uncertainty, further mitigating commodity price risk.  Idaho Power’s Energy 
Risk Management Policy (Policy) and associated standards implementing the Policy describe a collaborative process with 
customers and regulators via a committee called the Customer Advisory Group (CAG).  The Risk Management Committee 
(RMC), comprised of selected Idaho Power officers and other senior staff, oversees the risk management program.  The RMC is 
responsible for communicating the status of risk management activities to the Idaho Power Board of Directors and to the CAG, 
and Idaho Power’s Audit Committee is responsible for approving the Policy and associated standards.  The RMC is also 
responsible for conducting an ongoing general assessment of the appropriateness of Idaho Power’s strategies for energy risk 
management activities.  In its risk management process, Idaho Power considers both demand-side and supply-side options 
consistent with its IRP.  The primary tools for risk mitigation are physical and financial forward power transactions and fueling 
alternatives for utility-owned generation resources.  Idaho Power only engages in a nominal amount of trading activity for non-
retail purposes.

The Policy requires monitoring monthly volumetric electricity position and total monthly dollar (net power supply cost) 
exposure on a rolling 18-month forward view.  The power supply business unit produces and evaluates projections of the 

69

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
operating plan based on factors such as forecasted resource availability, stream flows, and load, and orders risk mitigating 
actions, including resource optimization and hedging strategies, dictated by the limits stated in the Policy to bring exposures 
within pre-established risk guidelines.  The RMC evaluates the actions initiated by power supply for consistency and 
compliance with the Policy.  Idaho Power representatives meet with the CAG at least annually to assess effectiveness of the 
limits.  Changes to the limits can be endorsed by the CAG and referred to the board of directors for approval.

Credit Risk

IDACORP is subject to credit risk based on Idaho Power's activity with market counterparties.  Idaho Power is exposed to this 
risk to the extent that a counterparty may fail to fulfill a contractual obligation to provide energy, purchase energy, or complete 
financial settlement for market activities.  Idaho Power mitigates this exposure by actively establishing credit limits; measuring, 
monitoring, and reporting credit risk using appropriate contractual arrangements; and transferring of credit risk through the use 
of financial guarantees, cash, or letters of credit.  Idaho Power maintains a current list of acceptable counterparties and credit 
limits.

The use of performance assurance collateral in the form of cash, letters of credit, or guarantees is common industry practice.  
Idaho Power maintains margin agreements relating to its wholesale commodity contracts that allow performance assurance 
collateral to be requested of and/or posted with certain counterparties.  As of December 31, 2015, Idaho Power had posted $0.9 
million performance assurance collateral.  Should Idaho Power experience a reduction in its credit rating on Idaho Power’s 
unsecured debt to below investment grade Idaho Power could be subject to requests by its wholesale counterparties to post 
additional performance assurance collateral.  Counterparties to derivative instruments and other forward contracts could request 
immediate payment or demand immediate ongoing full daily collateralization on derivative instruments and contracts in net 
liability positions.  Based upon Idaho Power’s energy and fuel portfolio and market conditions as of December 31, 2015, the 
amount of collateral that could be requested upon a downgrade to below investment grade was approximately $11.6 million.  To 
minimize capital requirements, Idaho Power actively monitors the portfolio exposure and the potential exposure to additional 
requests for performance assurance collateral calls through sensitivity analysis.

Idaho Power is obligated to provide service to all electric customers within its service area.  Credit risk for Idaho Power’s retail 
customers is managed by credit and collection policies that are governed by rules issued by the IPUC or OPUC.  Idaho Power 
records a provision for uncollectible accounts, based upon historical experience, to provide for the potential loss from 
nonpayment by these customers.  Idaho Power continuously monitors levels of nonpayment from customers and makes any 
necessary adjustments to its provision for uncollectible accounts accordingly.

Idaho utility customer relations rules prohibit Idaho Power from terminating electric service during the months of December 
through February to any residential customer who declares that he or she is unable to pay in full for utility service and whose 
household includes children, elderly, or infirm persons.  Idaho Power’s provision for uncollectible accounts could be affected 
by changes in future prices as well as changes in IPUC or OPUC regulations.

Equity Price Risk

IDACORP is exposed to price fluctuations in equity markets, primarily through Idaho Power's defined benefit pension plan 
assets, a mine reclamation trust fund owned by an equity-method investment of Idaho Power, and other equity security 
investments at Idaho Power.  The equity securities held by the pension plan and in such accounts are diversified to achieve 
broad market participation and reduce the impact of any single investment, sector, or geographic region.  Idaho Power has 
established asset allocation targets for the pension plan holdings, which are described in Note 11 - "Benefit Plans" to the 
consolidated financial statements included in this report.  Idaho Power has invested a significant portion of its $24.5 million of 
financial instruments classified as available-for-sale securities in exchange traded short-term bond funds.  A hypothetical 5 
percent increase in interest rates would result in an approximate $2.4 million decrease in the fair value of available-for-sale 
securities as of December 31, 2015.

70

 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Index to Financial Statements and Financial Statement Schedules

Consolidated Financial Statements

IDACORP, Inc.:

Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Equity

Idaho Power Company:

Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Retained Earnings

Notes to the Consolidated Financial Statements
Reports of Independent Registered Public Accounting Firm

Supplemental Financial Information and Financial Statement Schedules

Supplemental Financial Information (unaudited)
Financial Statement Schedules

IDACORP, Inc. - Schedule I - Condensed Financial Information of Registrant
IDACORP, Inc. - Schedule II - Consolidated Valuation and Qualifying Accounts
Idaho Power Company - Schedule II - Consolidated Valuation and Qualifying Accounts

Page

72
73
74
76
77

78
79
80
82
83

84
122

124

138
140
141

All other schedules have been omitted because they are not required, not applicable, or the required information is otherwise 
included.

71

 
 
 
 
 
 
 
 
 
 
 
 
IDACORP, Inc.
Consolidated Statements of Income

Year Ended December 31,
2014
(thousands of dollars except for per share amounts)

2015

2013

Operating Revenues:
Electric utility:

General business
Off-system sales
Other revenues

Total electric utility revenues

Other

Total operating revenues

Operating Expenses:
Electric utility:

Purchased power
Fuel expense
Power cost adjustment
Other operations and maintenance
Energy efficiency programs
Depreciation
Taxes other than income taxes

Total electric utility expenses

Other

Total operating expenses

Operating Income
Allowance for Equity Funds Used During Construction
Earnings of Unconsolidated Equity-Method Investments
Other Income, Net
Interest Expense:
Interest on long-term debt
Other interest
Allowance for borrowed funds used during construction

Total interest expense, net

Income Before Income Taxes
Income Tax Expense

Net Income
Adjustment for loss (income) attributable to noncontrolling interests

Net Income Attributable to IDACORP, Inc.

Weighted Average Common Shares Outstanding - Basic (000’s)
Weighted Average Common Shares Outstanding - Diluted (000’s)
Earnings Per Share of Common Stock:
Earnings Attributable to IDACORP, Inc. - Basic
Earnings Attributable to IDACORP, Inc. - Diluted

$

$

$
$

$

1,151,038
30,887
85,580
1,267,505
2,784
1,270,289

$

1,122,281
77,165
79,205
1,278,651
3,873
1,282,524

1,101,728
54,473
86,897
1,243,098
3,116
1,246,214

226,470
186,231
16,766
342,146
30,532
138,110
32,808
973,063
15,129
988,192

282,097
21,785
11,128
7,159

83,056
8,922
(10,044)
81,934

240,235
45,760

194,475
204

244,628
201,241
22,235
354,567
27,154
132,987
31,748
1,014,560
14,268
1,028,828

253,696
17,931
12,372
6,328

80,562
7,703
(8,464)
79,801

210,526
16,772

193,754
(274)

194,679

$

193,480

$

50,220
50,292

50,131
50,199

3.88
3.87

$
$

3.86
3.85

$
$

220,579
214,482
(39,537)
348,867
35,636
129,735
30,561
940,323
14,149
954,472

291,742
14,858
11,939
17,013

81,492
7,203
(7,663)
81,032

254,520
72,226

182,294
123

182,417

50,052
50,126

3.64
3.64

The accompanying notes are an integral part of these statements.

72

 
 
 
 
 
 
 
 
 
 
IDACORP, Inc.
Consolidated Statements of Comprehensive Income

Year Ended December 31,
2014

2013

2015

Net Income
Other Comprehensive Income:
Unrealized gains (losses) on securities:

Unrealized holding gains arising during the year,
  net of tax of $0, $0 and $1,894

Reclassification adjustment for gains included in net income, 
net of tax of $0, $0 and $4,550

Net unrealized losses

Unfunded pension liability adjustment, net of tax
  of $1,851 $(4,881), and $3,016
Total Comprehensive Income

Comprehensive loss (income) attributable to noncontrolling interests
Comprehensive Income Attributable to IDACORP, Inc.

(thousands of dollars)

$

194,475

$

193,754

$

182,294

—

—

—

2,882

197,357

204

$

197,561

$

—

—

—

(7,605)
186,149
(274)
185,875

2,951

(7,087)
(4,136)

4,699

182,857

123

$

182,980

The accompanying notes are an integral part of these statements.

73

 
 
 
 
 
 
 
 
 
 
 
 
 
IDACORP, Inc.
Consolidated Balance Sheets

Assets

Current Assets:
Cash and cash equivalents
Receivables:

Customer (net of allowance of $1,196 and $1,960, respectively)
Other (net of allowance of $159 and $144, respectively)

Income taxes receivable
Accrued unbilled revenues
Materials and supplies (at average cost)
Fuel stock (at average cost)
Prepayments
Deferred income taxes
Current regulatory assets
Other

Total current assets

December 31,

2015
2014
(thousands of dollars)

$

114,802

$

56,808

73,505
8,642
13,058
65,805
56,924
61,818
17,979
—
49,215
288
462,036

79,083
16,018
11,867
56,270
55,404
55,171
18,476
42,359
50,042
603
442,101

Investments

140,743

165,424

Property, Plant and Equipment:
Utility plant in service
Accumulated provision for depreciation

Utility plant in service - net
Construction work in progress
Utility plant held for future use
Other property, net of accumulated depreciation

Property, plant and equipment - net

Other Assets:
American Falls and Milner water rights
Company-owned life insurance
Regulatory assets
Long-term receivables (net of allowance of $552 and $552, respectively)
Other

Total other assets

Total

5,485,464
(1,913,927)
3,571,537
396,931
7,090
16,855
3,992,413

11,592
48,566
1,305,210
22,538
40,216
1,428,122

5,248,212
(1,841,011)
3,407,201
401,930
7,090
17,256
3,833,477

13,698
23,893
1,192,345
6,317
23,782
1,260,035

$

6,023,314

$

5,701,037

The accompanying notes are an integral part of these statements.

74

 
 
 
 
 
 
 
 
 
 
IDACORP, Inc.
Consolidated Balance Sheets

Liabilities and Equity

Current Liabilities:
Current maturities of long-term debt
Notes payable
Accounts payable
Taxes accrued
Interest accrued
Accrued compensation
Current regulatory liabilities
Advances from customers
Other

Total current liabilities

Other Liabilities:
Deferred income taxes
Regulatory liabilities
Pension and other postretirement benefits
Other

Total other liabilities

Long-Term Debt

Commitments and Contingencies

Equity:
IDACORP, Inc. shareholders’ equity:

Common stock, no par value (shares authorized 120,000,000;
     50,352,051 and 50,308,702 shares issued, respectively)
Retained earnings
Accumulated other comprehensive loss
Treasury stock (11,221 and 38,764 shares at cost, respectively)

Total IDACORP, Inc. shareholders’ equity

Noncontrolling interests

Total equity

Total

December 31,

2015
2014
(thousands of dollars)

$

$

1,064
20,000
95,526
10,762
22,292
42,961
2,217
31,214
16,270
242,306

1,064
31,300
89,324
10,367
22,630
43,774
11,400
17,204
14,718
241,781

1,137,375
416,282
394,030
45,867
1,993,554

1,065,290
390,207
403,334
44,238
1,903,069

1,725,410

1,598,622

849,112
1,230,105
(21,276)
(57)
2,057,884
4,160
2,062,044

845,402
1,132,237
(24,158)
(280)
1,953,201
4,364
1,957,565

$

6,023,314

$

5,701,037

The accompanying notes are an integral part of these statements.

75

 
 
 
 
 
 
 
 
 
 
IDACORP, Inc.
Consolidated Statements of Cash Flows

Operating Activities:
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization
Deferred income taxes and investment tax credits
Changes in regulatory assets and liabilities
Pension and postretirement benefit plan expense
Contributions to pension and postretirement benefit plans
Earnings of unconsolidated equity-method investments
Distributions from unconsolidated equity-method investments
Allowance for equity funds used during construction
Gain on sale of investments and assets
Other non-cash adjustments to net income, net
Change in:

Accounts receivable
Accounts payable and other accrued liabilities
Taxes accrued/receivable
Other current assets
Other current liabilities
Other assets
Other liabilities

Net cash provided by operating activities

Investing Activities:
Additions to property, plant and equipment
Payments received from transmission project joint funding partners
Purchase of available-for-sale securities
Proceeds from sale of available-for-sale securities
Purchase of life insurance investment
Other

Net cash used in investing activities

Financing Activities:
Issuance of long-term debt
Retirement of long-term debt
Dividends on common stock
Net change in short-term borrowings
Issuance of common stock
Acquisition of treasury stock
Make-whole premium on retirement of long-term debt
Other

Net cash used in financing activities

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of the year
Cash and cash equivalents at end of the year
Supplemental Disclosure of Cash Flow Information:
Cash paid during the year for:

Income taxes
Interest (net of amount capitalized)

Non-cash investing activities:

Additions to property, plant and equipment in accounts payable

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

$

194,475

$

193,754

$

182,294

142,581
38,645
13,699
30,207
(42,843)
(11,128)
12,458
(21,785)
(97)
2,788

4,740
2,440
818
(14,861)
403
3,021
(2,367)
353,194

(294,021)
11,377
(14,106)
34,243
(30,000)
801
(291,706)

250,000
(121,064)
(96,810)
(11,300)
—
(3,277)
(17,872)
(3,171)
(3,494)
57,994
56,808
114,802

8,857
79,442

23,840

$

$
$

$

137,088
19,163
32,135
44,627
(33,720)
(12,372)
5,261
(17,931)
(193)
5,085

20,433
6,359
(13,631)
(13,124)
1,771
(3,655)
(6,707)
364,343

(274,094)
—
(8,000)
—
—
9,674
(272,420)

—
(1,064)
(88,489)
(23,450)
195
(2,737)
—
2,268
(113,277)
(21,354)
78,162
56,808

11,364
77,295

28,438

$

$
$

$

133,776
65,568
(25,581)
45,907
(33,393)
(11,939)
17,526
(14,858)
(11,678)
3,297

(29,557)
(517)
4,747
(12,165)
1,819
(830)
(8,867)
305,549

(246,674)
11,364
(32,661)
25,661
—
5,717
(236,593)

150,000
(71,064)
(78,832)
(14,950)
255
(2,124)
—
(606)
(17,321)
51,635
26,527
78,162

1,437
77,968

24,246

$

$
$

$

The accompanying notes are an integral part of these statements.

76

 
 
 
 
 
 
 
 
 
 
IDACORP, Inc.
Consolidated Statements of Equity

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

Common Stock:

Balance at beginning of year

Issued
Other

Balance at end of year

Retained Earnings:

Balance at beginning of year

Net income attributable to IDACORP, Inc.
Common stock dividends ($1.92, $1.76, and $1.57 per share, respectively)

Balance at end of year

Accumulated Other Comprehensive (Loss) Income:

Balance at beginning of year

Net unrealized holding loss on securities (net of tax)
Unfunded pension liability adjustment (net of tax)

Balance at end of year

Treasury Stock:

Balance at beginning of year

Issued
Acquired

Balance at end of year

$

$

845,402
—
3,710
849,112

$

839,750
195
5,457
845,402

834,922
255
4,573
839,750

1,132,237
194,679
(96,811)
1,230,105

1,027,461
193,480
(88,704)
1,132,237

923,981
182,417
(78,937)
1,027,461

(24,158)
—
2,882
(21,276)

(280)
3,500
(3,277)
(57)

(16,553)
—
(7,605)
(24,158)

(8)
2,465
(2,737)
(280)

(17,116)
(4,136)
4,699
(16,553)

(21)
2,137
(2,124)
(8)

Total IDACORP, Inc. shareholders’ equity at end of year

2,057,884

1,953,201

1,850,650

Noncontrolling Interests:

Balance at beginning of year

Net (loss) income attributable to noncontrolling interests

Balance at end of year

4,364
(204)
4,160

4,090
274
4,364

4,213
(123)
4,090

Total equity at end of year

$ 2,062,044

$ 1,957,565

$ 1,854,740

The accompanying notes are an integral part of these statements.

77

 
 
 
 
 
 
 
 
 
 
 
 
Idaho Power Company
Consolidated Statements of Income

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

Operating Revenues:

General business

Off-system sales

Other revenues

Total operating revenues

Operating Expenses:

Operation:

Purchased power

Fuel expense

Power cost adjustment

Other operations and maintenance

Energy efficiency programs

Depreciation

Taxes other than income taxes

Total operating expenses

Income from Operations

Other Income (Expense):

Allowance for equity funds used during construction

Earnings of unconsolidated equity-method investments

Other (expense) income, net

Total other income

Interest Charges:

Interest on long-term debt

Other interest

Allowance for borrowed funds used during construction

Total interest charges

$ 1,151,038

$ 1,122,281

$ 1,101,728

30,887

85,580

77,165

79,205

54,473

86,897

1,267,505

1,278,651

1,243,098

226,470

186,231

16,766

342,146

30,532

138,110

32,808

973,063

244,628

201,241

22,235

354,567

27,154

132,987

31,748

1,014,560

220,579

214,482
(39,537)
348,867

35,636

129,735

30,561

940,323

294,442

264,091

302,775

21,785

9,773
(5,071)
26,487

83,056

8,706
(10,044)
81,718

17,931

10,814
(4,363)
24,382

80,562

7,472
(8,464)
79,570

14,858

10,242

5,772

30,872

81,492

6,817
(7,663)
80,646

Income Before Income Taxes

239,211

208,903

253,001

Income Tax Expense

Net Income

48,228

19,516

76,260

$

190,983

$

189,387

$

176,741

The accompanying notes are an integral part of these statements.

78

 
 
 
 
 
 
 
 
 
 
 
Idaho Power Company
Consolidated Statements of Comprehensive Income

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

Net Income
Other Comprehensive Income:
Unrealized gains (losses) on securities:

Unrealized holding gains arising during the year,

  net of tax of $0, $0 and $1,894

Reclassification adjustment for gains included in net income,

net of tax of $0, $0 and $4,550

Net unrealized losses

Unfunded pension liability adjustment, net of tax

  of $1,851 $(4,881), and $3,016

Total Comprehensive Income

$

190,983

$

189,387

$

176,741

—

—

—

—

—

—

2,951

(7,087)
(4,136)

2,882
193,865

$

(7,605)
181,782

$

4,699
177,304

$

The accompanying notes are an integral part of these statements.

79

 
 
 
 
 
 
 
 
 
 
 
 
 
Idaho Power Company
Consolidated Balance Sheets

December 31,

2015
2014
(thousands of dollars)

$

$

5,485,464
(1,913,927)
3,571,537
396,931
7,090
3,975,558

5,248,212
(1,841,011)
3,407,201
401,930
7,090
3,816,221

Assets

Electric Plant:
In service (at original cost)
Accumulated provision for depreciation

In service - net

Construction work in progress
Held for future use
Electric plant - net

Investments and Other Property

121,267

142,825

Current Assets:
Cash and cash equivalents
Receivables:

Customer (net of allowance of $1,196 and $1,960, respectively)
Other (net of allowance of $159 and $144, respectively)

Income taxes receivable
Accrued unbilled revenues
Materials and supplies (at average cost)
Fuel stock (at average cost)
Prepayments
Current regulatory assets
Other

Total current assets

Deferred Debits:
American Falls and Milner water rights
Company-owned life insurance
Regulatory assets
Other

Total deferred debits

110,756

46,695

73,505
8,520
5,432
65,805
56,924
61,818
17,846
49,215
288
450,109

79,083
15,890
20,428
56,270
55,404
55,171
18,356
50,042
603
397,942

11,592
48,566
1,305,210
56,533
1,421,901

13,698
23,893
1,192,345
23,937
1,253,873

Total

$

5,968,835

$

5,610,861

The accompanying notes are an integral part of these statements.

80

 
 
 
 
 
 
 
 
 
 
Idaho Power Company
Consolidated Balance Sheets

Capitalization and Liabilities

Capitalization:
Common stock equity:

Common stock, $2.50 par value (50,000,000 shares
     authorized; 39,150,812 shares outstanding)
Premium on capital stock
Capital stock expense
Retained earnings
Accumulated other comprehensive loss

Total common stock equity

Long-term debt

Total capitalization

Current Liabilities:
Current maturities of long-term debt
Accounts payable
Accounts payable to related parties
Taxes accrued
Interest accrued
Accrued compensation
Current regulatory liabilities
Advances from customers
Other

Total current liabilities

Deferred Credits:
Deferred income taxes
Regulatory liabilities
Pension and other postretirement benefits
Other

Total deferred credits

Commitments and Contingencies

December 31,

2014
2015
(thousands of dollars)

$

$

97,877
712,258
(2,097)
1,127,426
(21,276)
1,914,188
1,725,410
3,639,598

97,877
712,258
(2,097)
1,033,350
(24,158)
1,817,230
1,598,622
3,415,852

1,064
94,970
1,059
10,745
22,292
42,835
2,217
31,214
15,506
221,902

1,064
88,552
2,027
10,329
22,630
43,410
11,400
17,204
20,219
216,835

1,252,371
416,282
394,030
44,652
2,107,335

1,141,755
390,207
403,334
42,878
1,978,174

Total

$

5,968,835

$

5,610,861

The accompanying notes are an integral part of these statements.

81

 
 
 
 
 
 
 
 
 
 
Idaho Power Company
Consolidated Statements of Cash Flows

Operating Activities:
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization
Deferred income taxes and investment tax credits
Changes in regulatory assets and liabilities
Pension and postretirement benefit plan expense
Contributions to pension and postretirement benefit plans
Earnings of unconsolidated equity-method investments
Distributions from unconsolidated equity-method investments
Allowance for equity funds used during construction
Gain on sale of investments and assets
Other non-cash adjustments to net income, net
Change in:

Accounts receivable
Accounts payable
Taxes accrued/receivable
Other current assets
Other current liabilities
Other assets
Other liabilities

Net cash provided by operating activities

Investing Activities:
Additions to utility plant
Payments received from transmission project joint funding partners
Purchase of available-for-sale securities
Proceeds from the sale of available-for-sale securities
Purchase of life insurance investment
Other

Net cash used in investing activities

Financing Activities:
Issuance of long-term debt
Retirement of long-term debt
Dividends on common stock
Make-whole premium on retirement of long-term debt
Other

Net cash provided by (used in) financing activities
Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of the year
Cash and cash equivalents at end of the year
Supplemental Disclosure of Cash Flow Information:
Cash paid during the year for:

Income taxes
Interest (net of amount capitalized)

Non-cash investing activities:

Additions to property, plant and equipment in accounts payable

Year Ended December 31,

2015

2014

2013

(thousands of dollars)

$

190,983

$

189,387

$

176,741

141,972
25,702
13,699
30,185
(42,821)
(9,773)
10,833
(21,785)
(97)
(687)

1,998
2,646
17,179
(14,849)
443
3,021
(2,222)
346,427

(293,968)
11,377
(14,106)
34,243
(30,000)
706
(291,748)

250,000
(121,064)
(96,907)
(17,872)
(4,775)
9,382
64,061
46,695
110,756

7,487
79,226

23,840

$

$
$

$

136,496
15,454
32,135
44,579
(33,672)
(10,814)
3,586
(17,931)
(186)
2,087

20,072
6,183
(22,911)
(13,137)
1,776
(3,655)
(6,238)
343,211

(273,911)
—
(8,000)
—
—
8,508
(273,403)

—
(1,064)
(88,584)
—
—
(89,648)
(19,840)
66,535
46,695

26,116
77,063

28,438

$

$
$

$

133,135
59,355
(25,581)
45,861
(33,347)
(10,242)
14,901
(14,858)
(11,678)
629

(31,472)
(397)
6,740
(12,166)
1,721
(831)
(8,603)
289,908

(246,670)
11,364
(32,661)
25,661
—
3,971
(238,335)

150,000
(71,064)
(78,926)
—
(2,299)
(2,289)
49,284
17,251
66,535

9,667
77,583

24,246

$

$
$

$

The accompanying notes are an integral part of these statements.

82

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
Idaho Power Company
Consolidated Statements of Retained Earnings

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

Retained Earnings, Beginning of Year

Net Income

Dividends on Common Stock
Retained Earnings, End of Year

$ 1,033,350

$

932,547

$

834,732

190,983
(96,907)
$ 1,127,426

189,387
(88,584)
$ 1,033,350

$

176,741
(78,926)
932,547

The accompanying notes are an integral part of these statements.

83

 
 
 
 
 
 
 
 
 
IDACORP, INC. AND IDAHO POWER COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

This Annual Report on Form 10-K is a combined report of IDACORP, Inc. (IDACORP) and Idaho Power Company (Idaho 
Power).  Therefore, these Notes to the Consolidated Financial Statements apply to both IDACORP and Idaho Power.  However, 
Idaho Power makes no representation as to the information relating to IDACORP’s other operations.

Nature of Business

IDACORP is a holding company formed in 1998 whose principal operating subsidiary is Idaho Power.  Idaho Power is an 
electric utility with a service area covering approximately 24,000 square miles in southern Idaho and eastern Oregon.  Idaho 
Power is regulated primarily by the Federal Energy Regulatory Commission (FERC) and the state regulatory commissions of 
Idaho and Oregon.  Idaho Power is the parent of Idaho Energy Resources Co. (IERCo), a joint venturer in Bridger Coal 
Company (BCC), which mines and supplies coal to the Jim Bridger generating plant owned in part by Idaho Power.

IDACORP’s other wholly-owned subsidiaries include IDACORP Financial Services, Inc. (IFS), an investor in affordable 
housing and other real estate investments; Ida-West Energy Company (Ida-West), an operator of small hydroelectric generation 
projects that satisfy the requirements of the Public Utility Regulatory Policies Act of 1978 (PURPA); and IDACORP Energy 
Services Co. (IESCo), which is the former limited partner of, and current successor by merger to, IDACORP Energy L.P. (IE), a 
marketer of energy commodities that wound down operations in 2003.

Principles of Consolidation

IDACORP’s and Idaho Power’s consolidated financial statements include the assets, liabilities, revenues and expenses of each 
company and its wholly-owned subsidiaries listed above, as well as any variable interest entities (VIEs) for which the 
respective company is the primary beneficiary.  Investments in VIEs for which the companies are not the primary beneficiaries, 
but have the ability to exercise significant influence over operating and financial policies, are accounted for using the equity 
method of accounting. 

IDACORP also consolidates one variable interest entity (VIE), Marysville Hydro Partners (Marysville), which is a joint venture 
owned 50 percent by Ida-West and 50 percent by Environmental Energy Company (EEC).  At December 31, 2015, Marysville 
had approximately $19 million of assets, primarily a hydroelectric plant, and approximately $12 million of intercompany long-
term debt, which is eliminated in consolidation.  EEC has borrowed amounts from Ida-West to fund a portion of its required 
capital contributions to Marysville.  The loans are payable from EEC’s share of distributions from Marysville and are secured 
by the stock of EEC and EEC’s interest in Marysville.  Ida-West is identified as the primary beneficiary because the 
combination of its ownership interest in the joint venture with the intercompany note and the EEC note result in Ida-West's 
ability to control the activities of the joint ventures.  Creditors of Marysville have no recourse to the general credit of 
IDACORP and there are no other arrangements that could require IDACORP to provide financial support to Marysville or 
expose IDACORP to losses.

The BCC joint venture is also a VIE, but because the power to direct the activities that most significantly impact the economic 
performance of BCC is shared with the joint venture partner, Idaho Power is not the primary beneficiary.  The carrying value of 
BCC was $95 million at December 31, 2015, and Idaho Power's maximum exposure to loss is the carrying value, any additional 
future contributions to BCC, and a $73 million guarantee for mine reclamation costs, which is discussed further in Note 9.

IFS's affordable housing limited partnership and other real estate investments are also VIEs for which IDACORP is not the 
primary beneficiary.  IFS's limited partnership interests range from 5 to 99 percent and were acquired between 1996 and 2010.  
As a limited partner, IFS does not control these entities and they are not consolidated.  IFS’s maximum exposure to loss in these 
developments is limited to its net carrying value, which was $10 million at December 31, 2015.

Ida-West's other investments in PURPA facilities, BCC and IFS's investments are accounted for under the equity method of 
accounting (see Note 14).  

84

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Except for amounts related to sales of electricity by Ida-West's PURPA projects to Idaho Power, all intercompany transactions 
and balances have been eliminated in consolidation. 

The accompanying consolidated financial statements include Idaho Power's proportionate share of utility plant and related 
operations resulting from its interests in jointly owned plants (see Note 12). 

Management Estimates

Management makes estimates and assumptions when preparing financial statements in conformity with generally accepted 
accounting principles (GAAP).  These estimates and assumptions include those related to rate regulation, retirement benefits, 
contingencies, litigation, asset impairment, income taxes, unbilled revenues, and bad debt.  These estimates and assumptions 
affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the 
financial statements, and the reported amounts of revenues and expenses during the reporting period.  These estimates involve 
judgments with respect to, among other things, future economic factors that are difficult to predict and are beyond 
management’s control.  As a result, actual results could differ from those estimates.

System of Accounts

The accounting records of Idaho Power conform to the Uniform System of Accounts prescribed by the FERC and adopted by 
the public utility commissions of Idaho, Oregon, and Wyoming.

Regulation of Utility Operations

As a regulated utility, many of Idaho Power's fundamental business decisions are subject to the approval of governmental
agencies, including the prices that Idaho Power is authorized to charge for its electric service. These approvals are a critical
factor in determining IDACORP's and Idaho Power's results of operations and financial condition.  

IDACORP’s and Idaho Power’s financial statements reflect the effects of the different ratemaking principles followed by the 
jurisdictions regulating Idaho Power.  The application of accounting principles related to regulated operations sometimes results 
in Idaho Power recording expenses and revenues in a different period than when an unregulated enterprise would record such 
expenses and revenues.  In these instances, the amounts are deferred or accrued as regulatory assets or regulatory liabilities on 
the balance sheet and recorded on the income statement when recovered or returned in rates.  Additionally, regulators can 
impose regulatory liabilities upon a regulated company for amounts previously collected from customers that are expected to be 
refunded.  The effects of applying these regulatory accounting principles to Idaho Power’s operations are discussed in more 
detail in Note 3.

Cash and Cash Equivalents

Cash and cash equivalents include cash on-hand and highly liquid temporary investments that mature within 90 days of the date 
of acquisition.

Receivables and Allowance for Uncollectible Accounts

Customer receivables are recorded at the invoiced amounts and do not bear interest.  A late payment fee of one percent may be 
assessed on account balances after 30 days.  An allowance is recorded for potential uncollectible accounts.  The allowance is 
reviewed periodically and adjusted based upon a combination of historical write-off experience, aging of accounts receivable, 
and an analysis of specific customer accounts.  Adjustments are charged to income.  Customer accounts receivable balances that 
remain outstanding after reasonable collection efforts are written off.

Other receivables, primarily notes receivable from business transactions, are also reviewed for impairment periodically, based 
upon transaction-specific facts.  When it is probable that IDACORP or Idaho Power will be unable to collect all amounts due 
according to the contractual terms of the agreement, an allowance is established for the estimated uncollectible portion of the 
receivable and charged to income.

There were no impaired receivables without related allowances at December 31, 2015 and 2014.  Once a receivable is 
determined to be impaired, any further interest income recognized is fully reserved.

85

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative Financial Instruments

Financial instruments such as commodity futures, forwards, options, and swaps are used to manage exposure to commodity 
price risk in the electricity and natural gas markets.  All derivative instruments are recognized as either assets or liabilities at 
fair value on the balance sheet unless they are designated as normal purchases and normal sales.  With the exception of forward 
contracts for the purchase of natural gas for use at Idaho Power's natural gas generation facilities and a nominal number of 
power transactions, Idaho Power’s physical forward contracts are designated as normal purchases and normal sales.  Because of 
Idaho Power’s regulatory accounting mechanisms, Idaho Power records the changes in fair value of derivative instruments 
related to power supply as regulatory assets or liabilities.

Revenues

Operating revenues related to Idaho Power’s sale of energy are recorded when service is rendered or energy is delivered to 
customers.  Idaho Power accrues estimated unbilled revenues for electric services delivered to customers but not yet billed at 
year-end. In addition, regulatory mechanisms in place in Idaho and Oregon affect the reported amount of revenue.  See Note 3 
for additional discussion of certain of the following mechanisms:

• 

• 

• 
• 

• 

energy efficiency riders to fund energy efficiency program expenditures.  Expenditures funded through the rider are 
reported as an operating expense with an equal amount of revenues recorded in other revenues;
a fixed cost adjustment mechanism that results in recording additional or reduced revenue based on the allowed and 
actual fixed costs recovered through current rates;
a sharing mechanism providing for refunds to customers for earnings above stated returns on equity in Idaho;
franchise fees and similar taxes related to energy consumption.  None of these collections are reported on the income 
statement; and 
collection in base rates of a portion of the allowance for funds used during construction (AFUDC) related to its Hells 
Canyon Complex (HCC) relicensing project.  Cash collected under this ratemaking mechanism is not recorded as 
revenue but is instead deferred as a regulatory liability. 

Property, Plant and Equipment and Depreciation

The cost of utility plant in service represents the original cost of contracted services, direct labor and material, AFUDC, and 
indirect charges for engineering, supervision, and similar overhead items.  Repair and maintenance costs associated with 
planned major maintenance are expensed as the costs are incurred, as are maintenance and repairs of property and replacements 
and renewals of items determined to be less than units of property.  For utility property replaced or renewed, the original cost 
plus removal cost less salvage is charged to accumulated provision for depreciation, while the cost of related replacements and 
renewals is added to property, plant and equipment.

All utility plant in service is depreciated using the straight-line method at rates approved by regulatory authorities.  Annual 
depreciation provisions as a percent of average depreciable utility plant in service approximated 2.68 percent in 2015, 2.68 
percent in 2014, and 2.69 percent in 2013.

During the period of construction, costs expected to be included in the final value of the constructed asset, and depreciated once 
the asset is complete and placed in service, are classified as construction work in progress on the consolidated balance sheets.  
If the project becomes probable of being abandoned, such costs are expensed in the period such determination is made. Idaho 
Power may seek recovery of such costs in customer rates, although there can be no guarantee such recovery would be granted.

Long-lived assets are periodically reviewed for impairment when events or changes in circumstances indicate that the carrying 
amount of an asset may not be recoverable.  If the sum of the undiscounted expected future cash flows from an asset is less than 
the carrying value of the asset, impairment is recognized in the financial statements.  There were no material impairments of 
long-lived assets in 2015, 2014, or 2013.

Allowance for Funds Used During Construction

AFUDC represents the cost of financing construction projects with borrowed funds and equity funds.  With one exception, as 
discussed above for the HCC relicensing project, cash is not realized currently from such allowance; it is realized under the 
ratemaking process over the service life of the related property through increased revenues resulting from a higher rate base and 
higher depreciation expense.  The component of AFUDC attributable to borrowed funds is included as a reduction to total 

86

 
 
 
 
 
 
 
 
 
 
 
 
 
 
interest expense.  Idaho Power’s weighted-average monthly AFUDC rate was 7.6 percent for 2015, and 7.7 percent for both 
2014 and 2013.

 Income Taxes

IDACORP and Idaho Power account for income taxes under the asset and liability method, which requires the recognition of 
deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial 
statements.  Under this method (commonly referred to as normalized accounting), deferred tax assets and liabilities are 
determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax 
rates in effect for the year in which the differences are expected to reverse.  In general, deferred income tax expense or benefit 
for a reporting period is recognized as the change in deferred tax assets and liabilities from the beginning to the end of the 
period.  The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that 
includes the enactment date unless Idaho Power's primary regulator, the Idaho Public Utilities Commission (IPUC), orders 
direct deferral of the effect of the change in tax rates over a longer period of time.

Consistent with orders and directives of the IPUC, unless contrary to applicable income tax guidance, Idaho Power does not 
provide deferred income taxes for certain income tax temporary differences and instead recognizes the tax impact currently 
(commonly referred to as flow-through accounting) for rate making and financial reporting.  Therefore, Idaho Power's effective 
income tax rate is impacted as these differences arise and reverse.  Regulated enterprises are required to recognize such 
adjustments as regulatory assets or liabilities if it is probable that such amounts will be recovered from or returned to customers 
in future rates.

In compliance with the federal income tax requirements for the use of accelerated tax depreciation, Idaho Power provides 
deferred income taxes related to its plant assets for the difference between income tax depreciation and book depreciation used 
for financial statement purposes.  Deferred income taxes are provided for other temporary differences unless accounted for 
using flow-through.  

The state of Idaho allows a three percent investment tax credit on qualifying plant additions.  Investment tax credits earned on 
regulated assets are deferred and amortized to income over the estimated service lives of the related properties.  Credits earned 
on non-regulated assets or investments are recognized in the year earned.

Income taxes are discussed in more detail in Note 2.

Other Accounting Policies

Debt discount, expense, and premium are deferred and amortized over the terms of the respective debt issues. Losses on 
reacquired debt and associated costs are amortized over the life of the associated replacement debt, as allowed under regulatory 
accounting.

Supplemental Cash Flows Information

In 2015, Idaho Power executed an agreement to exchange property with another electric utility.  Under the terms of the 
agreement, each party transferred to the other transmission-related equipment with a book value of approximately $44 million.  
Idaho Power received an immaterial amount of cash, representing the difference in the book value of the assets exchanged.

Also in 2015, Idaho Power executed a long-term service agreement and transferred to the service provider approximately $22 
million of spare parts in partial exchange for future services.  No cash was exchanged in the 2015 transfer transaction.

Reclassifications

Certain prior year amounts on IDACORP's and Idaho Power's consolidated balance sheets and consolidated statements of cash 
flows have been reclassified to conform to the current year presentation.  Advances from customers are now classified in a 
separate line in current liabilities on the balance sheet.  Previously, such amounts were presented in accounts payable or other in 
current liabilities.  Also, payments received from transmission funding joint project partners are now presented in a separate 
line in investing cash flows on the cash flows statement.  Previously, these amounts were netted against additions to property, 
plant and equipment.

87

 
 
 
 
 
 
 
 
 
 
 
Recently Issued Accounting Pronouncements

In April 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2015-03, Interest 
- Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs, which changed the required 
balance sheet presentation of debt issuance costs.  The ASU requires that debt issuance costs be reported as reductions of long-
term debt rather than as long-term assets. As allowed,  IDACORP and Idaho Power elected to early-adopt the provisions of this 
ASU for its December 31, 2015 financial statements; retrospective application is required.  Debt issuance costs of $16.5 million 
and $15.8 million at December 31, 2015 and 2014, respectively,  are now reported as reductions of long-term debt.  These costs 
were previously presented as other assets and other deferred debits on  IDACORP's and Idaho Power's respective balance 
sheets.  See Note 4 for a discussion of long-term debt.

In November 2015, the FASB issued ASU 2015-17, Income Taxes (Topic 740) - Balance Sheet Classification of Deferred Taxes, 
which requires that all deferred taxes be presented as non-current.  As allowed,  IDACORP and Idaho Power elected to early-
adopt the provisions of this ASU for its December 31, 2015 balance sheets.  Also as allowed, prior periods were not 
retrospectively adjusted.  

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606).  ASU 2014-09 is intended 
to enable users of financial statements to better understand and consistently analyze an entity's revenue across industries, 
transactions, and geographies.  Under the ASU, recognition of revenue occurs when a customer obtains control of promised 
goods or services.  In addition, the ASU requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash 
flows arising from contracts with customers.  The amendments in ASU 2014-09 are effective for annual reporting periods 
beginning after December 15, 2017, including interim periods, with early adoption permitted one year earlier.  The guidance 
permits two implementation approaches, one requiring retrospective application of the new standard with restatement of prior 
years and one requiring prospective application of the new standard including a cumulative-effect adjustment with disclosure of 
results under old standards. IDACORP and Idaho Power are currently evaluating the impact of ASU 2014-09 on their financial 
statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis, 
which revises the consolidation model that reporting entities use when determining what entities are to be consolidated.  The 
amendments focus on limited partnerships and similar legal entities, and is effective for interim and annual reporting periods 
beginning after December 31, 2015.  IDACORP and Idaho Power do not believe the impact of ASU 2015-02 on their financial 
statements will be significant.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and 
Measurement of Financial Assets and Financial Liabilities, which revises the accounting related to the classification and 
measurement of investments in equity securities and the presentation of certain fair value changes for financial liabilities 
measured at fair value.  It also amends certain disclosure requirements associated with the fair value of financial instruments.  
The new standard is effective for fiscal years beginning after December 15, 2017, including interim periods.  IDACORP and 
Idaho Power are currently evaluating the impact of ASU 2016-01 on their financial statements.

88

 
 
 
 
 
 
 
 
 
2.  INCOME TAXES

A reconciliation between the statutory federal income tax rate and the effective tax rate is as follows:

Federal income tax expense at 35% statutory rate
Change in taxes resulting from:

AFUDC
Capitalized interest
Investment tax credits
Removal costs
Capitalized overhead costs
Capitalized repair costs
Bond redemption costs
Tax method change – capitalized repairs
State income taxes, net of federal benefit
Depreciation
Affordable housing tax credits
Affordable housing investment amortization
Other, net

Total income tax expense
Effective tax rate

IDACORP

Idaho Power

2015

2014

2013

2015

2014

2013

$ 84,154

$ 73,588

(thousands of dollars)
$ 83,724
$ 89,125

$ 73,116

$ 88,550

(11,140)
2,693
(2,963)
(4,807)
(8,750)
(28,700)
(6,459)
—
7,343
17,149
(3,258)
1,519
(1,021)
$ 45,760
19.0%

(9,238)
2,278
(3,002)
(3,656)
(8,750)
(26,250)
—
(24,516)
4,680
16,040
(5,189)
2,757
(1,970)
$ 16,772
8.0%

(7,882)
1,832
(3,119)
(3,527)
(8,750)
(19,250)
—
4,583
6,730
14,820
(5,503)
1,684
1,483
$ 72,226
28.4%

(11,140)
2,693
(2,963)
(4,807)
(8,750)
(28,700)
(6,459)
—
7,503
17,149
—
—
(22)
$ 48,228
20.2%

(9,238)
2,278
(3,002)
(3,656)
(8,750)
(26,250)
—
(24,516)
5,334
16,040
—
—
(1,840)
$ 19,516
9.3%

(7,882)
1,832
(3,119)
(3,527)
(8,750)
(19,250)
—
4,583
6,970
14,820
—
—
2,033
$ 76,260
30.1%

The items comprising income tax expense are as follows:

Income taxes current:

Federal
State

Total

Income taxes deferred:

Federal
State

Total

Investment tax credits:

Deferred
Restored
Total

Affordable housing investment amortization
Total income tax expense

IDACORP
2014

2015

2013

2015

(thousands of dollars)

Idaho Power
2014

2013

$

$

4,831
2,704
7,535

(4,926) $
3,516
(1,410)

3,416
3,241
6,657

$ 16,470
6,056
22,526

$

(2,805) $ 10,988
5,917
6,867
16,905
4,062

34,770
626
35,396

17,159
(3,260)
13,899

61,947
1,806
63,753

27,696
(2,486)
25,210

21,833
(6,421)
15,412

60,934
(804)
60,130

3,455
(2,963)
492
2,337
$ 45,760

3,044
(3,002)
42
4,241
$ 16,772

2,344
(3,119)
(775)
2,591
$ 72,226

3,455
(2,963)
492
—
$ 48,228

3,044
(3,002)
42
—
$ 19,516

2,344
(3,119)
(775)
—
$ 76,260

89

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The components of the net deferred tax liability are as follows:

Deferred tax assets:

Regulatory liabilities
Deferred compensation
Deferred revenue
Tax credits
Partnership investments
Retirement benefits
Other
Total

Deferred tax liabilities:

Property, plant and equipment
Regulatory assets
Power cost adjustments
Partnership investments
Retirement benefits
Other
Total

Net deferred tax liabilities

IDACORP

2015

2014
2015
(thousands of dollars)

Idaho Power

2014

$

$

51,131
27,573
34,282
147,299
7,220
126,885
11,245
405,635

474,879
875,028
18,489
16,925
126,090
31,600
1,543,011
1,137,376

$

$

55,490
25,355
28,529
154,044
8,190
132,571
15,222
419,401

451,118
802,188
23,192
17,492
122,360
25,982
1,442,332
1,022,931

$

$

51,131
27,489
34,282
30,307
—
126,885
10,745
280,839

474,879
875,028
18,489
9,829
126,090
28,895
1,533,210
1,252,371

$

$

55,490
25,240
28,529
26,843
—
132,571
14,553
283,226

451,118
802,188
23,192
10,227
122,360
22,252
1,431,337
1,148,111

IDACORP's tax allocation agreement provides that each member of its consolidated group compute its income taxes on a 
separate company basis.  Amounts payable or refundable are settled through IDACORP.  See Note 1 for further discussion of 
accounting policies related to income taxes.

Tax Credit Carryforwards

As of December 31, 2015, IDACORP had $108.7 million of general business credit and $0.7 million of alternative minimum 
tax credit carryforwards for federal income tax purposes and $37.9 million of Idaho investment tax credit carryforward.  The 
general business credit carryforward period expires from 2024 to 2035, and the Idaho investment tax credit expires from 2021 
to 2029.  

Uncertain Tax Positions

IDACORP and Idaho Power believe that they have no material income tax uncertainties for 2015 and prior tax years.  Both 
companies recognize interest accrued related to unrecognized tax benefits as interest expense and penalties as other expense. 

IDACORP and Idaho Power are subject to examination by their major tax jurisdictions - U.S. federal and the State of Idaho.  
The open tax years for examination are 2015 for federal and 2012-2015 for Idaho.  In May 2009, IDACORP formally entered 
the U.S. Internal Revenue Service (IRS) Compliance Assurance Process (CAP) program for its 2009 tax year and has remained 
in the CAP program for all subsequent years.  The CAP program provides for IRS examination and issue resolution throughout 
the current year with the objective of return filings containing no contested items.  In 2015, the IRS completed its examination 
of IDACORP's 2014 tax year with no unresolved income tax issues.  

Tax Accounting Method Changes for Repair-Related Expenditures

In the fourth quarter of 2014, Idaho Power finalized an income tax accounting method change for its 2014 tax year associated 
with the electric generation property portion of its capitalized repairs tax method it adopted in fiscal year 2010.  As a result of 
the change, Idaho Power recorded an $8.8 million tax benefit related to the cumulative method change adjustment for years 
prior to 2014 and reversed a related $4.6 million tax expense estimate it had recorded in 2013 (discussed below).  

90

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The method change was pursuant to Revenue Procedure 2013-24 and brought Idaho Power's existing method into alignment 
with the Revenue Procedure's safe harbor unit-of-property definitions for electric generation property.  The change also 
incorporated provisions of the final tangible property regulations issued by the U.S. Treasury Department and IRS in  2013 that 
addressed the deduction or capitalization of expenditures related to tangible property.  Following the automatic consent 
procedures provided for in the Revenue Procedure, Idaho Power adopted this method with the filing of IDACORP’s 2014 
consolidated federal income tax return in September 2015.  The IRS approved the method change prior to the filing of the 
return as part of IDACORP’s 2014 CAP examination.

In the third quarter of 2014 Idaho Power, in coordination with the IRS through IDACORP’s CAP examination process, 
implemented aspects of the final tangible property regulations and other technical interpretations of these rules into its existing 
capitalized repairs tax accounting method for generation, transmission and distribution assets.  These technical interpretations 
were received from the IRS in 2014.  An $11.1 million tax benefit related to the portion of the 2013 capitalized repairs 
deduction based on these modifications was recorded in the third quarter of 2014.  Idaho Power finalized these changes with the 
filing of IDACORP’s 2013 consolidated federal income tax return in September 2014.  The IRS approved the repairs method 
modifications prior to the filing of the return as part of IDACORP’s 2013 CAP examination.  

In connection with the issuance of the tangible property regulations and following the provisions of Revenue Procedure 
2013-24 (discussed above), in 2013 Idaho Power assessed and estimated the impact of a method change associated with the 
electric generation property portion of its capitalized repairs method.  Based upon this assessment, in 2013 Idaho Power 
recorded $4.6 million of income tax expense related to the estimated cumulative method change adjustment for years prior to 
2013.  

91

 
 
 
 
 
 
 
 
 
 
3.  REGULATORY MATTERS

IDACORP’s and Idaho Power’s financial statements reflect the effects of the different ratemaking principles followed by the 
jurisdictions regulating Idaho Power.  Included below is a summary of Idaho Power's regulatory assets and liabilities, as well as  
a discussion of notable regulatory matters. 

Regulatory Assets and Liabilities

The application of accounting principles related to regulated operations sometimes results in Idaho Power recording expenses 
and revenues in a different period than when an unregulated enterprise would record such expenses and revenues.  Regulatory 
assets represent incurred costs that have been deferred because it is probable they will be recovered from customers through 
future rates.  Regulatory liabilities represent obligations to make refunds to customers for previous collections, or represent 
amounts collected in advance of incurring an expense.  The following table presents a summary of Idaho Power’s regulatory 
assets and liabilities (in thousands of dollars):

Description

Regulatory Assets:

Income taxes
Unfunded postretirement benefits(2)
Pension expense deferrals
Energy efficiency program costs(3)
Power supply costs(4)
Fixed cost adjustment(4)
Asset retirement obligations(5)
Mark-to-market liabilities(6)
Long-term service agreement(7)
Other
Total

Regulatory Liabilities:

Income taxes
Removal costs(5)
Investment tax credits
Deferred revenue-AFUDC(8)
Energy efficiency program costs(3)
Power supply costs(4)
Settlement agreement sharing mechanism(4)
Mark-to-market assets(6)
Other
Total

As of December 31, 2015

Remaining
Amortization
Period

Earning a 
Return(1)

Not
Earning a
Return

Total as of December 31,

2015

2014

  $

— $

875,027

$

875,027

$

802,188

—

251,762

251,762

264,548

62,642
4,482

47,220
36,820
—

—
18,592
1,096
170,852

23,148
—

—
—
14,410

85,790
4,482

47,220
36,820
14,410

63,644
4,690

59,189
23,737
17,309

4,973
11,633
2,620
$ 1,183,573

4,973
30,225
3,716
$ 1,354,425

3,961
—
3,121
$ 1,242,387

— $
—
—
58,835
6,554
—
3,159

—
5,219
73,767

$

51,131
183,505
79,655
28,855
—
—
—

405
1,180
344,731

$

$

51,131
183,505
79,655
87,690
6,554
—
3,159

405
6,399
418,498

$

$

55,490
180,063
79,163
72,975
—
1
7,999

1,880
4,036
401,607

Varies
2016-2017

2043
2016-2021

  $

  $

  $

2016-2017

(1) Earning a return includes either interest or a return on the investment as a component of rate base at the allowed rate of return.
(2) Represents the unfunded obligation of Idaho Power’s pension and postretirement benefit plans, which are discussed in Note 11.
(3) The 2015 energy efficiency asset represents the Oregon jurisdiction balance and the liability represents the Idaho jurisdiction balance.  Both jurisdiction's 
balances were assets at December 31, 2014.
(4)  These items are discussed in more detail in this Note 3. 
(5) Asset retirement obligations and removal costs are discussed in Note 13.
(6) Mark-to-market assets and liabilities are discussed in Note 16.
(7) A portion not earning a return as of December 31, 2015 will be eligible to earn a return as of January 1, 2018.
(8) Idaho Power is collecting revenue in the Idaho jurisdiction for AFUDC on HCC relicensing costs but is deferring revenue recognition of the amounts 
collected until the license is issued and the asset is placed in service under the new license.

Idaho Power’s regulatory assets and liabilities are typically amortized over the period in which they are reflected in customer 
rates.  In the event that recovery of Idaho Power’s costs through rates becomes unlikely or uncertain, regulatory accounting 

92

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
would no longer apply to some or all of Idaho Power’s operations and the items above may represent stranded investments.  If 
not allowed full recovery of these items, Idaho Power would be required to write off the applicable portion, which could have a 
materially adverse financial impact.

Power Cost Adjustment Mechanisms and Deferred Power Supply Costs

In both its Idaho and Oregon jurisdictions, Idaho Power's power cost adjustment (PCA) mechanisms address the volatility of 
power supply costs and provide for annual adjustments to the rates charged to its retail customers.  The PCA mechanisms 
compare Idaho Power's actual net power supply costs (primarily fuel and purchased power less off-system sales) against net 
power supply costs being recovered.  Under the PCA mechanisms, certain differences between actual net power supply costs 
incurred by Idaho Power and the costs are recorded as a deferred charge or credit on the balance sheets for future recovery or 
refund.  The power supply costs deferred primarily result from changes in contracted power purchase prices and volumes, 
changes in wholesale market prices and transaction volumes, fuel prices, and the levels of Idaho Power's own generation. 

Idaho Jurisdiction Power Cost Adjustment Mechanism:  In the Idaho jurisdiction, the annual PCA adjustment consists of (a) a 
forecast component, based on a forecast of net power supply costs in the coming year as compared with net power supply costs 
included in base rates; and (b) a true-up component, based on the difference between the previous year’s actual net power 
supply costs and the previous year’s forecast.  The latter component also includes a balancing mechanism so that, over time, the 
actual collection or refund of authorized true-up dollars matches the amounts authorized.  The Idaho PCA mechanism also 
includes:

• 

• 

a cost or benefit sharing ratio that allocates the deviations in net power supply expenses between customers (95 
percent) and shareholders (5 percent), with the exceptions of expenses associated with PURPA power purchases and 
demand response incentive payments, which are allocated 100 percent to customers; and

a sales-based adjustment  intended to ensure that power supply expense recovery resulting solely from sales changes 
does not distort the results of the mechanism.

The table below summarizes the three most recent Idaho PCA rate adjustments, all of which also include non-PCA-related rate 
adjustments as ordered by the IPUC: 

Effective
Date
June 1, 2015

$ Change
(millions) Notes
(11.6)
$

The net decrease in Idaho PCA rates included the application of (a) a customer rate credit of
$8.0 million for sharing of revenues with customers for the year 2014 under the terms of the
December 2011 settlement stipulation, and (b) $4.0 million of surplus Idaho energy efficiency
rider funds.

June 1, 2014

$

(88.2) 2014 PCA rates are net of (a) $20.0 million of surplus Idaho energy efficiency rider funds,

and (b) $7.6 million of customer revenue sharing under a regulatory settlement stipulation.  In
addition, on June 1, 2014, there was an increase in base net power supply costs that shifted
$99.3 million in power supply expenses from recovery via the PCA mechanism to recovery
via base rates.  The shifting of base net power supply costs is discussed in more detail below.

June 1, 2013

$

140.4 The 2013 PCA rate increase was net of $7.2 million of customer revenue sharing under

regulatory settlement stipulations.

In March 2014, the IPUC issued an order approving Idaho Power's application requesting an increase of approximately $106 
million in the normalized or "base level" net power supply expense on a total-system basis to be used to update base rates and 
in the determination of the PCA rate that became effective June 1, 2014.  Approval of the order removed the Idaho-
jurisdictional portion of those expenses (approximately $99 million) from collection via the Idaho PCA mechanism and instead 
results in collecting that portion through base rates. 

In July 2014, the IPUC opened a docket pursuant to which Idaho Power, the IPUC Staff, and other interested parties further 
evaluated Idaho Power's application of the true-up component of the PCA mechanism and whether a deferral balance 
adjustment was appropriate.  While the IPUC's docket was closed in August 2014 with no adjustment to the PCA true-up 
revenue amount, Idaho Power subsequently met with the IPUC Staff to explore approaches to increasing the accuracy of the 
actual cost recovery under the PCA mechanism.  In May 2015, the IPUC approved a settlement stipulation that resulted in the 
replacement of the existing load-based adjustment used for determining the power cost deferrals under the PCA mechanism 
with a similar sales-based adjustment.  The sales-based adjustment functions in the same manner as the previous load-based 
adjustment but measures deviations between Idaho-specific test year sales and actual Idaho sales rather than deviations between 
test year loads and actual loads.  The approved settlement stipulation implemented the new methodology as of January 1, 2015.

93

 
 
 
 
 
 
 
 
 
 
Oregon Jurisdiction Power Cost Adjustment Mechanism:  Idaho Power’s power cost recovery mechanism in Oregon has two 
components: an annual power cost update (APCU) and a power cost adjustment mechanism (PCAM).  The APCU allows Idaho 
Power to reestablish its Oregon base net power supply costs annually, separate from a general rate case, and to forecast net 
power supply costs for the upcoming water year.  The PCAM is a true-up filed annually in February.  The filing calculates the 
deviation between actual net power supply expenses incurred for the preceding calendar year and the net power supply 
expenses recovered through the APCU for the same period.  Under the PCAM, Idaho Power is subject to a portion of the 
business risk or benefit associated with this deviation through application of an asymmetrical deadband (or range of deviations) 
within which Idaho Power absorbs cost increases or decreases.  For deviations in actual power supply costs outside of the 
deadband, the PCAM provides for 90/10 sharing of costs and benefits between customers and Idaho Power.  However, 
collection by Idaho Power will occur only to the extent that Idaho Power’s actual Oregon-jurisdictional return on equity (ROE) 
for the year is no greater than 100 basis points below Idaho Power’s last authorized ROE.  A refund to customers will occur 
only to the extent that Idaho Power’s actual ROE for that year is no less than 100 basis points above Idaho Power’s last 
authorized ROE.  Oregon jurisdiction power supply cost changes under the APCU and PCAM during each of 2015, 2014, and 
2013 are summarized in the table that follows:

Year and

Mechanism APCU or PCAM Adjustment
2015 PCAM Actual net power supply costs were within the deadband, resulting in no deferral.

A rate decrease of $0.7 million annually took effect June 1, 2015.
2015 APCU
2014 PCAM Actual net power supply costs were within the deadband, resulting in no deferral.

2014 APCU

A rate increase of $0.4 million annually took effect June 1, 2014.

2013 PCAM Actual net power supply costs were within the deadband, resulting in no deferral.

2013 APCU

A rate increase of $2.9 million annually took effect June 1, 2013.

Notable Idaho Regulatory Matters

Idaho Base Rate Changes:  Idaho base rates were most recently established in 2012, and adjusted in 2014.  Effective January 
1, 2012, Idaho Power implemented new Idaho base rates resulting from IPUC approval of a settlement stipulation that provided 
for a 7.86 percent authorized overall rate of return on an Idaho-jurisdiction rate base of approximately $2.36 billion.  The 
settlement stipulation resulted in a 4.07 percent, or $34.0 million, overall increase in Idaho Power's annual Idaho-jurisdiction 
base rate revenues.  Idaho base rates were subsequently adjusted again in 2012, in connection with Idaho Power's completion of 
the Langley Gulch power plant.  In June 2012, the IPUC issued an order approving a $58.1 million increase in annual Idaho-
jurisdiction base rates, effective July 1, 2012.  The order also provided for a $335.9 million increase in Idaho rate base.  Neither 
the settlement stipulation nor the IPUC orders adjusting base rates specified an authorized rate of return on equity or imposed a 
moratorium on Idaho Power filing a general rate case at a future date.

As noted above in this Note 3, the IPUC also issued a March 2014 order approving Idaho Power's request for an increase in the 
normalized or "base level" net power supply expense to be used to update base rates and in the determination of the Idaho PCA 
rate that became effective June 1, 2014. 

December 2011 Idaho Settlement Stipulation:  In December 2011, the IPUC issued an order, separate from the general rate 
case proceeding, approving a settlement stipulation that provided as follows: 

• 

• 

• 

If Idaho Power's actual Idaho-jurisdiction return on year-end equity (Idaho ROE) for 2012, 2013, or 2014 was less 
than 9.5 percent, then Idaho Power may amortize up to a total of $45 million of additional accumulated deferred 
investment tax credits (ADITC) to help achieve a minimum 9.5 percent Idaho ROE in the applicable year.

If Idaho Power's actual Idaho ROE for 2012, 2013, or 2014 exceeded 10.0 percent, the amount of Idaho Power's 
Idaho-jurisdiction earnings exceeding a 10.0 percent and up to and including a 10.5 percent Idaho ROE for the 
applicable year would be shared equally between Idaho Power and its Idaho customers in the form of a rate reduction 
to become effective at the time of the subsequent year's PCA mechanism adjustment.

If Idaho Power's actual Idaho ROE for 2012, 2013, or 2014 exceeded 10.5 percent, the amount of Idaho Power's Idaho 
jurisdictional earnings exceeding a 10.5 percent Idaho ROE for the applicable year would be allocated 75 percent to 
Idaho Power's Idaho customers as a reduction to the pension regulatory asset and 25 percent to Idaho Power.

As Idaho Power's Idaho ROE exceeded 10.5 percent for each of 2012, 2013, and 2014, Idaho Power did not amortize additional 
ADITC for those years, but instead shared a portion of its Idaho-jurisdiction earnings with Idaho customers.  The amounts 

94

 
 
 
 
 
 
 
 
 
 
Idaho Power recorded in each of 2012, 2013, and 2014 for sharing with customers under the December 2011 Idaho regulatory 
settlement stipulation were as follows (in millions):

Year

2014

2013

2012

Recorded as Refunds
to Customers

Recorded as a Pre-tax
Charge to Pension Expense

$8.0

$7.6

$7.2

$16.7

$16.5

$14.6

October 2014 Idaho Settlement Stipulation:  In October 2014, the IPUC issued an order approving an extension, with 
modifications, of the terms of the December 2011 Idaho settlement stipulation for the period from 2015 through 2019, or until 
the terms are otherwise modified or terminated by order of the IPUC or the full $45 million of additional ADITC contemplated 
by the settlement stipulation has been amortized.  The provisions of the new settlement stipulation are as follows:

• 

• 

• 

• 

• 

If Idaho Power's annual Idaho ROE in any year is less than 9.5 percent, then Idaho Power may amortize up to $25 
million of additional ADITC to help achieve a 9.5 percent Idaho ROE for that year, and may amortize up to a total 
of $45 million of additional ADITC over the 2015 through 2019 period.

If Idaho Power's annual Idaho ROE in any year exceeds 10.0 percent, the amount of earnings exceeding a 10.0 
percent Idaho ROE and up to and including a 10.5 percent Idaho ROE will be allocated 75 percent to Idaho Power's 
Idaho customers as a rate reduction to be effective at the time of the subsequent year's power cost adjustment and 25 
percent to Idaho Power.

If Idaho Power's annual Idaho ROE in any year exceeds 10.5 percent, the amount of earnings exceeding a 10.5 
percent Idaho ROE will be allocated 50 percent to Idaho Power's Idaho customers as a rate reduction to be effective at 
the time of the subsequent year's power cost adjustment, 25 percent to Idaho Power's Idaho customers in the form of a 
reduction to the pension expense deferral regulatory asset (to reduce the amount to be collected in the future from 
Idaho customers), and 25 percent to Idaho Power.

If the full $45 million of additional ADITC contemplated by the settlement stipulation has been amortized the sharing 
provisions would terminate.

In the event the IPUC approves a change to Idaho Power's Idaho-jurisdictional allowed return on equity as part of a 
general rate case proceeding seeking a rate change effective prior to January 1, 2020, the Idaho ROE thresholds (9.5 
percent, 10.0 percent, and 10.5 percent) will be adjusted prospectively.

Neither the settlement stipulation nor the associated IPUC order impose a moratorium on Idaho Power filing a general rate case 
or other form of rate proceeding during the term of the settlement stipulation.  

Idaho Power recorded no additional ADITC amortization and a $3.2 million provision against current revenue for sharing with 
customers for 2015 under the October 2014 Idaho settlement stipulation, as its Idaho ROE for 2015 was above 10.0 percent. 

Fixed Cost Adjustment:  The Idaho jurisdiction fixed cost adjustment (FCA) mechanism is designed to remove Idaho Power’s 
financial disincentive to invest in energy efficiency programs by separating (or decoupling) the recovery of fixed costs from the 
variable kilowatt-hour charge and linking it instead to a set amount per customer.  The FCA mechanism is adjusted each year to 
collect, or refund, the difference between the authorized fixed-cost recovery amount and the actual fixed costs recovered by 
Idaho Power during the year.  The annual change in the FCA recovery is capped at no more than 3 percent of base revenue, with 
any excess deferred for collection in a subsequent year.  The following table summarizes FCA amounts approved for collection 
in the prior three FCA years:

FCA Year
2014
2013
2012

Period Rates in Effect
June 1, 2015-May 31, 2016
June 1, 2014-May 31, 2015
June 1, 2013-May 31, 2014

Annual Amount
 (in millions)
$16.9
$14.9
$8.9

In July 2014, the IPUC opened a docket to allow Idaho Power, the IPUC Staff, and other interested parties to further evaluate 
the IPUC Staff's concerns regarding the application of the FCA mechanism (including weather-normalization, customer count 
methodology, rate adjustment cap, and cross-subsidization issues) and whether the FCA is effectively removing Idaho Power's 
disincentive to aggressively pursue energy efficiency programs.  In May 2015, the IPUC approved a settlement stipulation that 
95

 
 
 
 
 
 
 
 
 
 
modified the FCA mechanism by replacing weather-normalized billed sales with actual billed sales in the calculation of the 
FCA, applicable for the entirety of calendar year 2015 and thereafter, and reflected in FCA charges effective June 1, 2016.

Notable Oregon Regulatory Matters

Oregon Base Rate Changes:  Oregon base rates were most recently established in a general rate case in 2012.  In February 
2012, the OPUC issued an order approving a settlement stipulation that provided for a $1.8 million base rate increase, a return 
on equity of 9.9 percent, and an overall rate of return of 7.757 percent in the Oregon jurisdiction.  New rates in conformity with 
the settlement stipulation were effective March 1, 2012.  Subsequently, in September 2012, the OPUC issued an order 
approving an approximately $3.0 million increase in annual Oregon jurisdiction base rates, effective October 1, 2012, for 
inclusion of the Langley Gulch power plant in Idaho Power's Oregon rate base. 

Federal Regulatory Matters - Open Access Transmission Tariff Rates

Idaho Power uses a formula rate for transmission service provided under its OATT, which allows transmission rates to be 
updated annually based primarily on financial and operational data Idaho Power files with the FERC.  Idaho Power's OATT 
rates submitted to the FERC in Idaho Power's four most recent annual OATT Final Informational Filings were as follows:  

Applicable Period

October 1, 2015 to September 30, 2016

October 1, 2014 to September 30, 2015

October 1, 2013 to September 30, 2014

October 1, 2012 to September 30, 2013

OATT Rate
(per kW-year)

$

$

$

$

23.43

22.48

22.80

21.29

Idaho Power's current OATT rate is based on a net annual transmission revenue requirement of $121.3 million, which 
represents the OATT formulaic determination of Idaho Power's net cost of providing OATT-based transmission service.  

96

 
 
 
 
 
 
 
 
 
 
4.  LONG-TERM DEBT

The following table summarizes IDACORP's and Idaho Power's long-term debt at December 31 (in thousands of dollars): 

2015

2014

First mortgage bonds:

6.025% Series due 2018

6.15% Series due 2019

4.50% Series due 2020

3.40% Series due 2020

2.95% Series due 2022

2.50% Series due 2023

6% Series due 2032

5.50% Series due 2033

5.50% Series due 2034

5.875% Series due 2034

5.30% Series due 2035

6.30% Series due 2037

6.25% Series due 2037

4.85% Series due 2040

4.30% Series due 2042

4.00% Series due 2043

3.65% Series Due 2045

Total first mortgage bonds

Pollution control revenue bonds:
5.15% Series due 2024(1)
5.25% Series due 2026(1)
Variable Rate Series 2000 due 2027

Total pollution control revenue bonds

American Falls bond guarantee

Milner Dam note guarantee

Unamortized issuance costs and discounts

Total IDACORP and Idaho Power outstanding debt(2)

Current maturities of long-term debt

Total long-term debt

$

— $

100,000

130,000

100,000

75,000

75,000

100,000

70,000

50,000

55,000

60,000

140,000

100,000

100,000

75,000

75,000

250,000

120,000

100,000

130,000

100,000

75,000

75,000

100,000

70,000

50,000

55,000

60,000

140,000

100,000

100,000

75,000

75,000

—

1,555,000

1,425,000

49,800

116,300

4,360

170,460

19,885

49,800

116,300

4,360

170,460

19,885

2,127
(20,998)
1,726,474
(1,064)
1,725,410

$

3,191
(18,850)
1,599,686
(1,064)
1,598,622

$

(1) Humboldt County and Sweetwater County Pollution Control Revenue Bonds are secured by the first mortgage, bringing the total first mortgage bonds 
outstanding at December 31, 2015 to $1.721 billion.
(2) At December 31, 2015 and 2014, the overall effective cost of Idaho Power's outstanding debt was 4.96 percent and 5.19 percent, respectively.

At December 31, 2015, the maturities for the aggregate amount of IDACORP and Idaho Power long-term debt outstanding 
were as follows (in thousands of dollars):

2016

2017

2018

2019

2020

Thereafter

$

1,064

$

1,064

$

— $

100,000

$

230,000

$

1,415,344

Long-Term Debt Issuances, Maturities, and Availability

On March 6, 2015, Idaho Power issued $250 million in principal amount of 3.65% first mortgage bonds, secured medium-term 
notes, Series J, maturing on March 1, 2045.  On April 23, 2015, Idaho Power redeemed, prior to maturity, $120 million in 
principal amount of 6.025% first mortgage bonds, medium-term notes, Series H due July 2018.  In accordance with the 
redemption provisions of the notes, the redemption included Idaho Power's payment of a make-whole premium to the holders 

97

 
 
 
 
 
 
 
 
 
 
 
of the redeemed notes in the aggregate amount of approximately $17.9 million.  Idaho Power used a portion of the net proceeds 
from the March 2015 sale of first mortgage bonds, medium-term notes to effect the redemption. 

In April 2013, Idaho Power received orders from the IPUC, OPUC, and Wyoming Public Service Commission (WPSC) 
authorizing Idaho Power to issue and sell from time to time up to $500 million in aggregate principal amount of debt securities 
and first mortgage bonds, subject to conditions specified in the orders.  Authority from the IPUC was through April 9, 2015.  
On April 1, 2015, the IPUC approved a two-year extension through April 9, 2017, continuing Idaho Power's authorization to 
issue and sell from time to time debt securities and first mortgage bonds.  The OPUC's and WPSC's orders do not impose a time 
limitation for issuances, but the OPUC order does impose a number of other conditions, including a maximum interest rate limit 
of seven percent.  

On May 22, 2013, IDACORP and Idaho Power filed a joint shelf registration statement with the SEC, which became effective 
upon filing, for the offer and sale of, in the case of Idaho Power, an unspecified principal amount of its first mortgage bonds and 
debt securities.  On July 12, 2013, Idaho Power entered into a Selling Agency Agreement with eight banks named in the 
agreement in connection with the potential issuance and sale from time to time of up to $500 million aggregate principal 
amount of first mortgage bonds, secured medium term notes, Series J (Series J Notes), under Idaho Power’s Indenture of 
Mortgage and Deed of Trust, dated as of October 1, 1937, as amended and supplemented (Indenture).  Also on July 12, 2013, 
Idaho Power entered into the Forty-seventh Supplemental Indenture, dated as of July 1, 2013, to the Indenture.  The Forty-
seventh Supplemental Indenture provides for, among other items, the issuance of up to $500 million in aggregate principal 
amount of Series J Notes pursuant to the Indenture.  As of December 31, 2015, $250 million in principal amount of Series J 
Notes remained available for issuance under the Indenture.

Mortgage:  As of December 31, 2015, Idaho Power could issue under its Indenture approximately $1.5 billion of additional 
first mortgage bonds based on retired first mortgage bonds and total unfunded property additions.  These amounts are further 
limited by the maximum amount of first mortgage bonds set forth in the Indenture.

The mortgage of the Indenture secures all bonds issued under the Indenture equally and ratably, without preference, priority, or 
distinction.  First mortgage bonds issued in the future will also be secured by the mortgage of the Indenture.  The lien 
constitutes a first mortgage on all the properties of Idaho Power, subject only to certain limited exceptions including liens for 
taxes and assessments that are not delinquent and minor excepted encumbrances.  Certain of the properties of Idaho Power are 
subject to easements, leases, contracts, covenants, workmen's compensation awards, and similar encumbrances and minor 
defects and clouds common to properties.  The mortgage of the Indenture does not create a lien on revenues or profits, or notes 
or accounts receivable, contracts or choses in action, except as permitted by law during a completed default, securities, or cash, 
except when pledged, or merchandise or equipment manufactured or acquired for resale.  The mortgage of the Indenture creates 
a lien on the interest of Idaho Power in property subsequently acquired, other than excepted property, subject to limitations in 
the case of consolidation, merger, or sale of all or substantially all of the assets of Idaho Power.  The Indenture requires Idaho 
Power to spend or appropriate 15 percent of its annual gross operating revenues for maintenance, retirement, or amortization of 
its properties.  Idaho Power may, however, anticipate or make up these expenditures or appropriations within the five years that 
immediately follow or precede a particular year.

On February 17, 2010, Idaho Power entered into the Forty-fifth Supplemental Indenture, dated as of February 1, 2010, to the 
Indenture for the purpose of increasing the maximum amount of first mortgage bonds issuable by Idaho Power from $1.5 
billion to $2.0 billion.  The amount issuable is also restricted by property, earnings, and other provisions of the Indenture and 
supplemental indentures to the Indenture.  Idaho Power may amend the Indenture and increase this amount without consent of 
the holders of the first mortgage bonds.  The Indenture requires that Idaho Power's net earnings be at least twice the annual 
interest requirements on all outstanding debt of equal or prior rank, including the bonds that Idaho Power may propose to issue.  
Under certain circumstances, the net earnings test does not apply, including the issuance of refunding bonds to retire 
outstanding bonds that mature in less than two years or that are of an equal or higher interest rate, or prior lien bonds.

98

 
 
 
 
 
 
 
 
 
 
5.  NOTES PAYABLE

Credit Facilities

On November 6, 2015, IDACORP and Idaho Power entered into Credit Agreements replacing the existing Second Amended 
and Restated Credit Agreements, dated October 26, 2011, to provide credit facilities that may be used for general corporate 
purposes and commercial paper backup.  IDACORP's credit facility consists of a revolving line of credit not to exceed the 
aggregate principal amount at any one time outstanding of $100 million, including swingline loans in an aggregate principal 
amount at any time outstanding not to exceed $10 million, and letters of credit in an aggregate principal amount at any time 
outstanding not to exceed $50 million.  Idaho Power's credit facility consists of a revolving line of credit, through the issuance 
of loans and standby letters of credit, not to exceed the aggregate principal amount at any one time outstanding of $300 million, 
including swingline loans in an aggregate principal amount at any time outstanding not to exceed $30 million, and letters of 
credit in an aggregate principal amount at any time outstanding not to exceed $100 million.  IDACORP and Idaho Power have 
the right to request an increase in the aggregate principal amount of the facilities to $150 million and $450 million, respectively, 
in each case subject to certain conditions.  

The IDACORP and Idaho Power credit facilities have similar terms and conditions.  The interest rates for any borrowings under 
the facilities are based on either (1) a floating rate that is equal to the highest of the prime rate, federal funds rate plus 0.5 
percent, or LIBOR rate plus 1.0 percent, or (2) the LIBOR rate, plus, in each case, an applicable margin, provided that the 
federal funds rate and LIBOR rate will not be less than 0.0 percent.  The margin is based on IDACORP's or Idaho Power's, as 
applicable, senior unsecured long-term indebtedness credit rating by Moody's Investors Service, Inc., Standard and Poor's 
Ratings Services, and Fitch Rating Services, Inc., as set forth on a schedule to the credit agreements.  Under their respective 
credit facilities, the companies pay a facility fee on the commitment based on the respective company's credit rating for senior 
unsecured long-term debt securities.  The credit facilities mature on November 6, 2020, though IDACORP and Idaho Power 
may request up to two one-year extensions of the credit agreements, subject to certain conditions.

At December 31, 2015, no loans were outstanding under either IDACORP's or Idaho Power's facilities.  At December 31, 2015, 
Idaho Power had regulatory authority to incur up to $450 million in principal amount of short-term indebtedness at any one 
time outstanding.  Balances (in thousands of dollars) and interest rates of IDACORP’s and Idaho Power's short-term borrowings 
were as follows at December 31, 2015 and December 31, 2014:

IDACORP

Idaho Power

Total

2015

2014

2015

2014

2015

2014

$ 20,000

$ 31,300

$ 22,054

$ 37,786

$

$

— $

— $

— $ 20,000

$ 31,300

— $ 22,054

$ 37,786

0.88%

0.43%

—%

—%

0.88%

0.43%

Commercial paper balances:

At the end of year

Average during the year
Weighted-average interest rate

At the end of the year

6.  COMMON STOCK

IDACORP Common Stock

The following table summarizes IDACORP common stock transactions during the last three years and shares reserved at 
December 31, 2015:

Balance at beginning of year
Continuous equity program
Dividend reinvestment and stock purchase plan
Employee savings plan
Long-term incentive and compensation plan
Restricted stock plan

Balance at end of year

Shares issued
2014
50,233,463
—
—
—
75,239
—
50,308,702

2015
50,308,702
—
—
—
43,349
—
50,352,051

99

Shares reserved
December 31, 2015

3,000,000
2,576,723
3,567,954
1,424,695
256,154

2013
50,158,486
—
—
—
74,977
—
50,233,463

 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
IDACORP has historically entered into sales agency agreements as a means of selling its common stock from time to time 
pursuant to a continuous equity program.  On July 12, 2013, IDACORP entered into its current Sales Agency Agreement with 
BNY Mellon Capital Markets, LLC (BNYMCM).  Under the agreement, IDACORP may offer and sell up to 3 million shares of 
its common stock from time to time in at-the-market offerings through BNYMCM as IDACORP's agent.  IDACORP has no 
obligation to issue any minimum number of shares under the Sales Agency Agreement.  As of the date of this report, no shares 
of IDACORP common stock have been issued under the current Sales Agency Agreement.    

Restrictions on Dividends

Idaho Power’s ability to pay dividends on its common stock held by IDACORP and IDACORP’s ability to pay dividends on its 
common stock are limited to the extent payment of such dividends would violate the covenants in their respective credit 
facilities or Idaho Power’s Revised Code of Conduct.  A covenant under IDACORP’s credit facility and Idaho Power’s credit 
facility requires IDACORP and Idaho Power to maintain leverage ratios of consolidated indebtedness to consolidated total 
capitalization, as defined therein, of no more than 65 percent at the end of each fiscal quarter.  At December 31, 2015, the 
leverage ratios for IDACORP and Idaho Power were 46 percent and 48 percent, respectively.  Based on these restrictions, 
IDACORP’s and Idaho Power’s dividends were limited to $1.1 billion and $980 million, respectively, at December 31, 2015.  
There are additional facility covenants, subject to exceptions, that prohibit or restrict the sale or disposition of property without 
consent and any agreements restricting dividend payments to the company from any material subsidiary.  At December 31, 
2015, IDACORP and Idaho Power were in compliance with those covenants. 

Idaho Power’s Revised Policy and Code of Conduct relating to transactions between and among Idaho Power, IDACORP, and 
other affiliates, which was approved by the IPUC in April 2008, provides that Idaho Power will not pay any dividends to 
IDACORP that will reduce Idaho Power’s common equity capital below 35 percent of its total adjusted capital without IPUC 
approval.  At December 31, 2015, Idaho Power's common equity capital was 52 percent of its total adjusted capital.  Further, 
Idaho Power must obtain approval from the OPUC before it can directly or indirectly loan funds or issue notes or give credit on 
its books to IDACORP.  

Idaho Power’s articles of incorporation contain restrictions on the payment of dividends on its common stock if preferred stock 
dividends are in arrears. As of the date of this report, Idaho Power has no preferred stock outstanding.

In addition to contractual restrictions on the amount and payment of dividends, the Federal Power Act prohibits the payment of 
dividends from "capital accounts."  The term "capital account" is undefined in the Federal Power Act or its regulations, but 
Idaho Power does not believe the restriction would limit Idaho Power's ability to pay dividends out of current year earnings or 
retained earnings.  

7.  STOCK-BASED COMPENSATION

IDACORP has two share-based compensation plans -- the 2000 Long-Term Incentive and Compensation Plan (LTICP) and the 
1994 Restricted Stock Plan (RSP).  These plans are intended to align employee and shareholder objectives related to 
IDACORP’s long-term growth.  

The LTICP (for officers, key employees, and directors) permits the grant of stock options, restricted stock, performance shares, 
and several other types of stock-based awards.  The RSP (for officers and key employees) permits only the grant of restricted 
stock or performance-based restricted stock.  At December 31, 2015, the maximum number of shares available under the LTICP 
and RSP were 1,043,542 and 15,796, respectively, excluding (i) issued but unvested performance-based restricted shares and 
(ii) issued but unvested time-based restricted shares.

Stock Awards:  Restricted stock awards have three-year vesting periods and entitle the recipients to dividends and voting rights.  
Unvested shares are restricted as to disposition and subject to forfeiture under certain circumstances.  The fair value of these 
awards is based on the closing market price of common stock on the grant date and is charged to compensation expense over 
the vesting period, based on the number of shares expected to vest.

Performance-based restricted stock awards have three-year vesting periods and entitle the recipients to voting rights.  Unvested 
shares are restricted as to disposition, subject to forfeiture under certain circumstances, and subject to the attainment of specific 
performance conditions over the three-year vesting period.  The performance conditions are two equally-weighted metrics, 
cumulative earnings per share (CEPS) and total shareholder return (TSR) relative to a peer group.  Depending on the level of 
attainment of the performance conditions and the year issued, the final number of shares awarded can range from zero to 150 

100

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
percent of the target award for awards granted prior to 2015 and from zero to 200 percent of the target award for awards granted 
in 2015.  Dividends are accrued during the vesting period and paid out based on the final number of shares awarded.

The grant-date fair value of the CEPS portion is based on the closing market value at the date of grant, reduced by the loss in 
time-value of the estimated future dividend payments.  The fair value of this portion of the awards is charged to compensation 
expense over the requisite service period, based on the number of shares expected to vest.  The grant-date fair value of the TSR 
portion is estimated using the market value at the date of grant and a statistical model that incorporates the probability of 
meeting performance targets based on historical returns relative to the peer group.  The fair value of this portion of the awards 
is charged to compensation expense over the requisite service period, provided the requisite service period is rendered, 
regardless of the level of TSR metric attained.

A summary of restricted stock and performance share activity is presented below.  Idaho Power share amounts represent the 
portion of IDACORP amounts related to Idaho Power employees:

Nonvested shares at January 1, 2015
Shares granted
Shares forfeited
Shares vested
Nonvested shares at December 31, 2015

IDACORP

Idaho Power

Number of
Shares

Weighted-
Average
Grant Date
Fair Value

255,073
116,781
(10,904)
(130,130)
230,820

$

$

43.90
54.01
55.32
36.91
52.41

Number of
Shares

250,396
115,863
(10,413)
(127,056)
228,790

Weighted-
Average
Grant Date
Fair Value
43.91
$
54.05
55.63
36.84
52.44

$

The total fair value of shares vested during the years ended December 31, 2015, 2014, and 2013 was $8.3 million, $6.6 million, 
and $5.0 million, respectively.  At December 31, 2015, IDACORP had $4.7 million of total unrecognized compensation cost 
related to nonvested share-based compensation that was expected to vest.  Idaho Power’s share of this amount was $4.7 million.  
These costs are expected to be recognized over a weighted-average period of 1.68 years.  IDACORP uses original issue and/or 
treasury shares for these awards.

In 2015, a total of 15,324 shares were awarded to directors at a grant date fair value of $62.62 per share.  Directors elected to 
defer receipt of 3,831 of these shares, which are being held as deferred stock units with dividend equivalents reinvested in 
additional stock units.

Compensation Expense:  The following table shows the compensation cost recognized in income and the tax benefits resulting 
from these plans, as well as the amounts allocated to Idaho Power for those costs associated with Idaho Power’s employees (in 
thousands of dollars): 

Compensation cost
Income tax benefit

IDACORP
2014

2015

2013

2015

Idaho Power
2014

2013

$

$

5,299
2,072

$

5,609
2,193

$

4,888
1,911

$

5,221
2,042

$

5,458
2,134

4,783
1,870

No equity compensation costs have been capitalized.

101

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
8.  EARNINGS PER SHARE

The following table presents the computation of IDACORP’s basic and diluted earnings per share for the years ended 
December 31, 2015, 2014, and 2013 (in thousands, except for per share amounts):

Year Ended December 31,
2014

2013

2015

Numerator:

Net income attributable to IDACORP, Inc.

$ 194,679

$ 193,480

$ 182,417

Denominator:

Weighted-average common shares outstanding - basic
Effect of dilutive securities
Weighted-average common shares outstanding - diluted

Basic earnings per share
Diluted earnings per share

9.  COMMITMENTS

Purchase Obligations

50,220
72
50,292
3.88
3.87

$
$

50,131
68
50,199
3.86
3.85

$
$

50,052
74
50,126
3.64
3.64

$
$

At December 31, 2015, Idaho Power had the following long-term commitments relating to purchases of energy, capacity, 
transmission rights, and fuel (in thousands of dollars): 

Cogeneration and power production
Fuel

2016
$ 199,156
60,122

2017
$ 233,197
43,276

2018
$ 241,356
16,206

2019
$ 234,772
9,169

2020
$ 234,316
8,833

Thereafter
$3,592,891
114,417

As of December 31, 2015, Idaho Power had 784 MW nameplate capacity of PURPA-related projects on-line, with an additional 
448 MW nameplate capacity of projects projected to be on-line by June 1, 2017.  Of the 448 MW nameplate capacity of 
projected PURPA-related projects at the end of 2015, as of February 5, 2016, three contracts with solar projects with a 
combined nameplate capacity of 25 MW had terminated.  Termination of the agreements reduced Idaho Power's contractual 
payment obligations by approximately $74 million over the 20-year lives of the terminated contracts.  The power purchase 
contracts for these projects have original contract terms ranging from one to 35 years.  Idaho Power's expenses associated with 
PURPA-related projects were approximately $131 million in 2015, $145 million in 2014, and $131 million in 2013.

Idaho Power also has the following long-term commitments for lease guarantees, equipment, maintenance and services, and 
industry related fees (in thousands of dollars):

Operating leases
Equipment, maintenance, and service agreements
FERC and other industry-related fees

$

2016

233
48,707
12,894

$

2017

971
11,703
12,746

$

2018

985
14,869
12,746

$

2019

1,062
9,214
8,632

$

2020

897
12,095
5,942

Thereafter
12,625
$
83,721
29,708

IDACORP’s expense for operating leases was approximately $4.4 million in 2015, $5.9 million in 2014, and $5.3 million in 
2013.

Guarantees

Through a self-bonding mechanism, Idaho Power guarantees its portion of reclamation activities and obligations at BCC, of 
which IERCo owns a one-third interest.  This guarantee, which is renewed annually with the Wyoming Department of 
Environmental Quality, was $73 million at December 31, 2015, representing IERCo's one-third share of BCC's total 
reclamation obligation.  BCC has a reclamation trust fund set aside specifically for the purpose of paying these reclamation 
costs.  At December 31, 2015, the value of the reclamation trust fund was $70 million.  During 2015, the reclamation trust fund 
distributed approximately $6 million for reclamation activity costs associated with the BCC surface mine.  BCC periodically 
assesses the adequacy of the reclamation trust fund and its estimate of future reclamation costs.  To ensure that the reclamation 

102

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
trust fund maintains adequate reserves, BCC has the ability to add a per-ton surcharge to coal sales, all of which are made to the 
Jim Bridger plant.  Starting in 2010, BCC began applying a nominal surcharge to coal sales in order to maintain adequate 
reserves in the reclamation trust fund.  Because of the existence of the fund and the ability to apply a per-ton surcharge, the 
estimated fair value of this guarantee is minimal.

IDACORP and Idaho Power enter into financial agreements and power purchase and sale agreements that include 
indemnification provisions relating to various forms of claims or liabilities that may arise from the transactions contemplated by 
these agreements.  Generally, a maximum obligation is not explicitly stated in the indemnification provisions and, therefore, the 
overall maximum amount of the obligation under such indemnification provisions cannot be reasonably estimated.  IDACORP 
and Idaho Power periodically evaluate the likelihood of incurring costs under such indemnities based on their historical 
experience and the evaluation of the specific indemnities.  As of December 31, 2015, management believes the likelihood is 
remote that IDACORP or Idaho Power would be required to perform under such indemnification provisions or otherwise incur 
any significant losses with respect to such indemnification obligations.  Neither IDACORP nor Idaho Power has recorded any 
liability on their respective consolidated balance sheets with respect to these indemnification obligations.

10.  CONTINGENCIES

IDACORP and Idaho Power have in the past and expect in the future to become involved in various claims, controversies, 
disputes, and other contingent matters, including the items described in this Note 10.  Some of these claims, controversies, 
disputes, and other contingent matters involve litigation and regulatory or other contested proceedings.  The ultimate resolution 
and outcome of litigation and regulatory proceedings is inherently difficult to determine, particularly where (a) the remedies or 
penalties sought are indeterminate, (b) the proceedings are in the early stages or the substantive issues have not been well 
developed, or (c) the matters involve complex or novel legal theories or a large number of parties.  In accordance with 
applicable accounting guidance, IDACORP and Idaho Power, as applicable, establish an accrual for legal proceedings when 
those matters proceed to a stage where they present loss contingencies that are both probable and reasonably estimable.  In such 
cases, there may be a possible exposure to loss in excess of any amounts accrued. IDACORP and Idaho Power monitor those 
matters for developments that could affect the likelihood of a loss and the accrued amount, if any, and adjust the amount as 
appropriate.  If the loss contingency at issue is not both probable and reasonably estimable, IDACORP and Idaho Power do not 
establish an accrual and the matter will continue to be monitored for any developments that would make the loss contingency 
both probable and reasonably estimable.  As of the date of this report, IDACORP's and Idaho Power's accruals for loss 
contingencies are not material to their financial statements as a whole; however, future accruals could be material in a given 
period.  IDACORP's and Idaho Power's determination is based on currently available information, and estimates presented in 
financial statements and other financial disclosures involve significant judgment and may be subject to significant uncertainty.   
For matters that affect Idaho Power’s operations, Idaho Power intends to seek, to the extent permissible and appropriate, 
recovery through the ratemaking process of costs incurred.

Western Energy Proceedings 

High prices for electricity, energy shortages, and blackouts in California and in the western wholesale markets during 2000 and 
2001 caused numerous purchasers of electricity in those markets to initiate proceedings to consider requiring refunds and other 
forms of disgorgement from energy sellers.  Some of these proceedings remain pending before the FERC or are on appeal to the 
United States Court of Appeals for the Ninth Circuit, and thus there remains some uncertainty about the ultimate outcome of the 
proceedings.  Idaho Power and IESCo (as successor to IDACORP Energy L.P.) believe that the current state of the FERC's 
orders, if maintained, and the settlement releases they have obtained, will restrict potential claims that might result from the 
pending proceedings.  As a result, IDACORP and Idaho Power predict that these matters will not have a material adverse effect 
on their respective results of operations or financial condition.  However, if unanticipated orders are issued by the FERC or by 
the Ninth Circuit Court of Appeals or other courts, exposure to indirect claims in the proceedings could exist.  These indirect 
claims would consist of so-called "ripple claims," which involve potential claims for refunds in the Pacific Northwest markets 
from an upstream seller of power based on a finding that its downstream buyer was liable for refunds as a seller of power 
during the relevant period.  Given the speculative nature of ripple claims and in light of Idaho Power's and IESCo participating 
in the market as both a buyer and seller of energy, Idaho Power and IESCo are unable to estimate the possible loss or range of 
loss that could result from the proceedings and have no amount accrued relating to the proceedings.  To the extent the 
availability of any ripple claims materializes, Idaho Power and IESCo will continue to vigorously defend their positions in the 
proceedings.
Hoku Corporation Bankruptcy Claims 

On June 26, 2015, the trustee in the Hoku Corporation chapter 7 bankruptcy case (In Re: Hoku Corporation, United States 
Bankruptcy Court, District of Idaho, Case No. 13-40838 JDP) filed a complaint against Idaho Power, alleging that specified 

103

 
 
 
 
 
 
 
 
 
 
 
 
 
payments made by Hoku Corporation to Idaho Power in the six years prior to Hoku Corporation's bankruptcy filing in July 
2013 should be recoverable by the trustee as constructive fraudulent transfers.  Hoku Corporation was the parent entity of Hoku 
Materials, Inc., with which Idaho Power had an electric service agreement approved by the IPUC in March 2009.  Under the 
electric service agreement, Idaho Power agreed to provide electric service to a polysilicon production facility under 
construction by Hoku Materials in the state of Idaho.  Idaho Power also had agreements with Hoku Materials pertaining to the 
design and construction of apparatus for the provision of electric service to the polysilicon plant.  The trustee's complaint 
against Idaho Power includes alternative causes of action for constructive fraudulent transfer under the federal bankruptcy code, 
Idaho law, and federal law, with requests for recovery from Idaho Power in amounts up to approximately $36 million.  The 
complaint alleges that the payments made by Hoku Corporation to Idaho Power are subject to recovery by the trustee on the 
basis that Hoku Corporation was insolvent at the time of the payments and did not have any legal or equitable title in the 
polysilicon plant or liability for Hoku Materials' debts, and thus did not receive reasonably equivalent value for the payments it 
made for or on behalf of Hoku Materials. 

As of the date of this report, the proceedings are in preliminary stages and it is not possible to determine Idaho Power's 
potential liability, if any, or to reasonably estimate a possible loss or range of possible loss, if any, within the trustee's alternative 
prayers for relief.  Idaho Power intends to vigorously defend against the claims. 

Other Proceedings

IDACORP and Idaho Power are parties to legal claims and legal and regulatory actions and proceedings in the ordinary course 
of business that are in addition to those discussed above and, as noted above, record an accrual for associated loss contingencies 
when they are probable and reasonably estimable.  As of the date of this report the companies believe that resolution of those 
matters will not have a material adverse effect on their respective consolidated financial statements.  Idaho Power is also 
actively monitoring various pending environmental regulations that may have a significant impact on its future operations. 
Given uncertainties regarding the outcome, timing, and compliance plans for these environmental matters, Idaho Power is 
unable to estimate the financial impact of these regulations.  However, Idaho Power does believe that future capital investment 
for infrastructure and modifications to its electric generating facilities could be significant to comply with these regulations.

11.  BENEFIT PLANS

Idaho Power sponsors defined benefit and other postretirement benefit plans that cover the majority of its employees.  Idaho 
Power also sponsors a defined contribution 401(k) employee savings plan and provides certain post-employment benefits.

Pension Plans

Idaho Power has two pension plans–a noncontributory defined benefit pension plan (pension plan) and a nonqualified defined 
benefit pension plan for certain senior management employees called the Security Plan for Senior Management Employees 
(SMSP).  Idaho Power also has a nonqualified defined benefit pension plan for directors that was frozen in 2002.  Remaining 
vested benefits from that plan are included with the SMSP in the disclosures below.  The benefits under these plans are based on 
years of service and the employee's final average earnings.

Idaho Power’s funding policy for the pension plan is to contribute at least the minimum required under the Employee 
Retirement Income Security Act of 1974 (ERISA) but not more than the maximum amount deductible for income tax purposes.  
In 2015, 2014, and 2013 Idaho Power elected to contribute more than the minimum required amounts in order to bring the 
pension plan to a more funded position, to reduce future required contributions, and to reduce Pension Benefit Guaranty 
Corporation premiums.  

104

 
 
 
 
 
 
 
 
 
 
 
 
 
The following table summarizes the changes in benefit obligations and plan assets of these plans (in thousands of 
dollars): 

Pension Plan

SMSP

2015

2014

2015

2014

Change in projected benefit obligation:
Benefit obligation at January 1
Service cost
Interest cost
Actuarial (gain) loss
Benefits paid
Projected benefit obligation at December 31
Change in plan assets:
Fair value at January 1
Actual return on plan assets
Employer contributions
Benefits paid
Fair value at December 31
Funded status at end of year

$

$

844,812
33,164
35,171
(47,952)
(29,672)
835,523

559,719
(9,431)
39,000
(29,672)
559,616

695,093
25,292
35,415
114,496
(25,484)
844,812

545,092
10,111
30,000
(25,484)
559,719

$ (275,907) $ (285,093) $

$

$

94,410
1,689
3,868
(352)
(4,226)
95,389

77,773
1,645
3,856
15,324
(4,188)
94,410

—
—
—
—
—
(95,389) $

—
—
—
—
—
(94,410)

Amounts recognized in the statement of financial position

consist of:

Other current liabilities
Noncurrent liabilities
Net amount recognized

$

— $

— $

(275,907)

(285,093)

$ (275,907) $ (285,093) $

(4,423) $
(90,966)
(95,389) $

(4,193)
(90,217)
(94,410)

Amounts recognized in accumulated other comprehensive

income consist of:

Net loss
Prior service cost
Subtotal
Less amount recorded as regulatory asset
Net amount recognized in accumulated other comprehensive income

Accumulated benefit obligation

$

$

$

$

253,212
74
253,286
(253,286)

$

263,350
295
263,645
(263,645)

— $

— $

34,260
673
34,933
—
34,933

714,994

$

719,617

$

86,838

$

$

$

38,808
857
39,665
—
39,665

84,684

As a non-qualified plan, the SMSP has no plan assets.  However, Idaho Power has a Rabbi trust designated to provide funding 
for SMSP obligations.  The Rabbi trust holds investments in marketable securities and corporate-owned life insurance.  The 
recorded value of these investments was approximately $69.3 million and $65.0 million at December 31, 2015 and 2014, 
respectively, and is reflected in Investments and in Company-owned life insurance on the consolidated balance sheets.

105

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table shows the components of net periodic benefit cost for these plans (in thousands of dollars).  For purposes of 
calculating the expected return on plan assets, the market-related value of assets is equal to the fair value of the assets.

Service cost

Interest cost

Expected return on assets

Amortization of net loss

Amortization of prior service cost

Net periodic pension cost
Adjustments due to the effects of regulation(1)
Net periodic benefit cost recognized for financial reporting

Pension Plan

2015

2014

2013

2015

SMSP

2014

2013

$

33,164

$

25,292

$

31,357

$

1,689

$

1,645

$

35,171

35,415

31,830

(42,310)

(42,289)

(35,755)

13,927

221

40,173

(21,173)

3,911

347

22,676

12,124

17,118

347

44,897

(9,013)

3,868

—

4,195

185

9,937

—

3,856

—

2,618

220

8,339

—

2,178

3,258

—

2,840

212

8,488

—

$

19,000

$

34,800

$

35,884

$

9,937

$

8,339

$

8,488

(1) Net periodic benefit costs for the pension plan are recognized for financial reporting based upon the authorization of each regulatory jurisdiction in which 
Idaho Power operates.  Under IPUC order, income statement recognition of pension plan costs is deferred until costs are recovered through rates.

The following table shows the components of other comprehensive income for the plans (in thousands of dollars):

Actuarial (loss) gain during the year
Reclassification adjustments for:

Amortization of net loss
Amortization of prior service cost
Adjustment for deferred tax effects
Adjustment due to the effects of regulation

Pension Plan
2014

2015

2013

2015

SMSP
2014

2013

$

(3,790) $(146,674) $ 154,261

$

353

$ (15,324) $

4,664

13,927
221
(4,050)
(6,308)

3,911
347
55,678
86,738

17,118
347
(67,136)
(104,590)

4,195
185
(1,851)
—

2,618
220
4,881
—

2,840
212
(3,017)
—

Other comprehensive income recognized related to

pension benefit plans

$

— $

— $

— $

2,882

$ (7,605) $

4,699

In 2016, IDACORP and Idaho Power expect to recognize as components of net periodic benefit cost $17.3 million from 
amortizing amounts recorded in accumulated other comprehensive income (or as a regulatory asset for the pension plan) as of 
December 31, 2015, relating to the pension plan and SMSP.  This amount consists of $13.5 million of amortization of net loss 
and $0.1 million of amortization of prior service cost for the pension plan, and $3.5 million of amortization of net loss and $0.2 
million of amortization of prior service cost for the SMSP.

The following table summarizes the expected future benefit payments of these plans (in thousands of dollars):

Pension Plan
SMSP

2016

2017

2018

2019

2020

2021-2025

$

$

30,086
4,516

32,529
4,582

$

35,156
4,371

$

37,795
4,547

$

$

40,527
4,964

241,079
25,659

As of December 31, 2015, IDACORP's and Idaho Power's minimum required contributions to the pension plan are estimated to 
be zero in 2016, though Idaho Power plans to contribute at least $20 million to the pension plan during 2016 in order to help 
balance the regulatory collection of these expenditures with the amount and timing of contributions and to mitigate the cost of 
being in an underfunded position. 

Postretirement Benefits

Idaho Power maintains a defined benefit postretirement benefit plan (consisting of health care and death benefits) that covers all 
employees who were enrolled in the active-employee group plan at the time of retirement as well as their spouses and 
qualifying dependents.  Retirees hired on or after January 1, 1999 have access to the standard medical option at full cost, with 
no contribution by Idaho Power.  Benefits for employees who retire after December 31, 2002 are limited to a fixed amount, 
which has limited the growth of Idaho Power’s future obligations under this plan.

106

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table summarizes the changes in benefit obligation and plan assets (in thousands of dollars):

Change in accumulated benefit obligation:
Benefit obligation at January 1
Service cost
Interest cost
Actuarial (gain) loss
Benefits paid(1)
Benefit obligation at December 31
Change in plan assets:
Fair value of plan assets at January 1
Actual return on plan assets
Employer contributions(1)
Benefits paid(1)
Fair value of plan assets at December 31
Funded status at end of year (included in noncurrent liabilities)

2015

2014

$

$

$

65,999
1,235
2,678
(5,008)
(2,511)
62,393

38,375
85
(383)
(2,511)
35,566
(26,827) $

57,341
1,011
2,841
7,026
(2,220)
65,999

37,111
3,888
(404)
(2,220)
38,375
(27,624)

(1) Contributions and benefits paid are each net of $3,518 thousand and $3,379 thousand of plan participant contributions, and $330 thousand and $344 thousand 
of Medicare Part D subsidy receipts for 2015 and 2014, respectively.

Amounts recognized in accumulated other comprehensive income consist of the following (in thousands of dollars):

Net (gain) loss
Prior service cost

Subtotal

Less amount recognized in regulatory assets
Net amount recognized in accumulated other comprehensive income

The net periodic postretirement benefit cost was as follows (in thousands of dollars):

2015

2014

$

$

(1,654) $
130
(1,524)
1,524

— $

759
145
904
(904)
—

Service cost
Interest cost
Expected return on plan assets
Amortization of net loss
Amortization of prior service cost
Net periodic postretirement benefit cost

2015

2014

2013

$

$

1,235
2,678
(2,680)
—
15
1,248

$

$

1,011
2,841
(2,595)
—
183
1,440

$

$

1,315
2,633
(2,328)
98
(229)
1,489

The following table shows the components of other comprehensive income for the plan (in thousands of dollars):

Actuarial gain (loss) during the year
Reclassification adjustments for:

2015

2014

2013

$

2,413

$

(5,733) $

20,673

Amortization of net loss
Amortization of prior service cost
Adjustment for deferred tax effects
Adjustment due to the effects of regulation
Other comprehensive income related to postretirement benefit plans

—
15
(949)
(1,479)

—
183
2,170
3,380

$

— $

— $

98
(229)
(8,031)
(12,511)
—

In 2016, IDACORP and Idaho Power expect to recognize as components of net periodic benefit cost $26 thousand from 
amortizing amounts recorded in accumulated other comprehensive income as of December 31, 2015, relating to the 
postretirement benefit plan.  The entire amount represents $26 thousand of amortization of prior service cost.

107

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Medicare Act:  The Medicare Prescription Drug, Improvement and Modernization Act of 2003 was signed into law in 
December 2003 and established a prescription drug benefit under Medicare Part D, as well as a federal subsidy to sponsors of 
retiree health care benefit plans that provide a prescription drug benefit that is at least actuarially equivalent to Medicare’s 
prescription drug coverage.

The following table summarizes the expected future benefit payments of the postretirement benefit plan and expected Medicare 
Part D subsidy receipts (in thousands of dollars):  

Expected benefit payments
Expected Medicare Part D subsidy receipts

2016

$

4,010
380

2017
$ 4,050
430

2018
$ 4,100
470

2019

2020

2021-2025

$

4,150
510

$

$

4,190
560

21,030
3,480

Plan Assumptions

The following table sets forth the weighted-average assumptions used at the end of each year to determine benefit obligations 
for all Idaho Power-sponsored pension and postretirement benefits plans:

Discount rate
Rate of compensation increase(1)
Medical trend rate
Dental trend rate
Measurement date

Pension Plan

SMSP

Postretirement
Benefits

2015

2014

2015

2014

2015

2014

4.60%
4.11%
—
—

4.25%
4.30%
—
—

4.60%
4.50%
—
—

4.20%
4.50%
—
—

12/31/2015

12/31/2014

12/31/2015

12/31/2014

4.60%
—
9.7%
5.0%
12/31/2015

4.20%
—
6.4%
5.0%
12/31/2014

(1) The 2015 rate of compensation increase assumption for the pension plan includes an inflation component of 2.50% plus a 1.61% composite merit increase 
component that is based on employees' years of service.  Merit salary increases are assumed to be 8.0% for employees in their first year of service and scale 
down to 0% for employees in their fortieth year of service and beyond.

The following table sets forth the weighted-average assumptions used to determine net periodic benefit cost for all Idaho 
Power-sponsored pension and postretirement benefit plans: 

Discount rate
Expected long-term rate of return on

assets

Pension Plan
2014

SMSP
2014

2015
4.25% 5.20% 4.20% 4.20% 5.10% 4.15% 4.20% 5.15% 4.20%

2013

2013

2015

2015

2013

Postretirement
Benefits
2014

7.50% 7.75% 7.75%

—

—

—

7.25% 7.25% 7.25%

Rate of compensation increase
Medical trend rate
Dental trend rate

4.11% 4.30% 4.38% 4.50% 4.50% 4.50%

—
—

—
—

—
—

—
—

—
—

—
—

—
9.7%
5.0%

—
6.4%
5.0%

—
6.8%
5.0%

In October 2014, the Society of Actuaries released a new set of mortality tables referred to as RP-2014.  Mortality tables are 
used by defined benefit plans to estimate the life expectancy of plan participants and the expected length of benefit payments in 
retirement.  Idaho Power's measurement of its plan benefit obligations as of December 31, 2015 and 2014, and its net periodic 
benefit cost for 2015, reflect the adoption of the new tables, which was not material.

108

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
The assumed health care cost trend rate used to measure the expected cost of health benefits covered by the postretirement plan 
was 9.7 percent in 2015 and is assumed to decrease to 8.3 percent in 2016, 6.8 percent in 2017, 5.4 percent in 2018 and to 
gradually decrease to 4.8 percent by 2099.  The assumed dental cost trend rate used to measure the expected cost of dental 
benefits covered by the plan was 5.0 percent, or equal to the medical trend rate if lower, for all years.  A one percentage point 
change in the assumed health care cost trend rate would have the following effects at December 31, 2015 (in thousands of 
dollars):

Effect on total of cost components
Effect on accumulated postretirement benefit obligation

Plan Assets

One-Percentage-Point

Increase

Decrease

$

$

407
3,719

(297)
(2,838)

Pension Asset Allocation Policy:  The target allocation and actual allocations at December 31, 2015 for the pension asset 
portfolio by asset class is set forth below:

Asset Class
Debt securities
Equity securities
Real estate
Other plan assets
Total

Target
Allocation

Actual
Allocation
December 31, 
2015

24%
54%
6%
16%
100%

25%
55%
7%
13%
100%

Assets are rebalanced as necessary to keep the portfolio close to target allocations.

The plan’s principal investment objective is to maximize total return (defined as the sum of realized interest and dividend 
income and realized and unrealized gain or loss in market price) consistent with prudent parameters of risk and the liability 
profile of the portfolio.  Emphasis is placed on preservation and growth of capital along with adequacy of cash flow sufficient 
to fund current and future payments to pensioners.

The three major goals in Idaho Power’s asset allocation process are to:

determine if the investments have the potential to earn the rate of return assumed in the actuarial liability calculations;

• 
•  match the cash flow needs of the plan.  Idaho Power sets bond allocations sufficient to cover at least five years of 

benefit payments and cash allocations sufficient to cover the current year benefit payments.  Idaho Power then utilizes 
growth instruments (equities, real estate, venture capital) to fund the longer-term liabilities of the plan; and

•  maintain a prudent risk profile consistent with ERISA fiduciary standards.

Allowable plan investments include stocks and stock funds, investment-grade bonds and bond funds, core real estate funds, 
private equity funds, and cash and cash equivalents.  With the exception of real estate holdings and private equity, investments 
must be readily marketable so that an entire holding can be disposed of quickly with only a minor effect upon market price.

Rate-of-return projections for plan assets are based on historical risk/return relationships among asset classes.  The primary 
measure is the historical risk premium each asset class has delivered versus the yield on the Moody's AA Corporate Bond 
Index.  This historical risk premium is then added to the current yield on the Moody's AA Corporate Bond Index.  Additional 
analysis is performed to measure the expected range of returns, as well as worst-case and best-case scenarios.  Based on the 
current low interest rate environment, current rate-of-return expectations are lower than the nominal returns generated over the 
past 20 years when interest rates were generally much higher.

Idaho Power’s asset modeling process also utilizes historical market returns to measure the portfolio’s exposure to a “worst-
case” market scenario, to determine how much performance could vary from the expected “average” performance over various 
time periods.  This “worst-case” modeling, in addition to cash flow matching and diversification by asset class and investment 
style, provides the basis for managing the risk associated with investing portfolio assets.

109

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fair Value of Plan Assets:  Idaho Power classifies its pension plan and postretirement benefit plan investments using the three-
level fair value hierarchy described in Note 16.  The following table presents the fair value of the plans' investments by asset 
category (in thousands of dollars).  If the inputs used to measure the securities fall within different levels of the hierarchy, the 
categorization is based on the lowest level input (Level 3 being the lowest) that is significant to the fair value measurement of 
the security.  

Assets at December 31, 2015

Pension plan assets:

Cash and cash equivalents
Short-term bonds
Intermediate bonds
Long-term bonds
Equity Securities: Large-Cap
Equity Securities: Mid-Cap
Equity Securities: Small-Cap
Equity Securities: Micro-Cap
Equity Securities: International
Equity Securities: Emerging Markets
Real estate
Private market investments
Commodities funds

Total pension assets

Postretirement plan assets(1)

Assets at December 31, 2014
Pension plan assets:

Cash and cash equivalents
Short-term bonds
Intermediate bonds
Long-term bonds
Equity Securities: Large-Cap
Equity Securities: Mid-Cap
Equity Securities: Small-Cap
Equity Securities: Micro-Cap
Equity Securities: International
Equity Securities: Emerging Markets
Real estate
Private market investments
Commodities funds

Total pension assets

Postretirement plan assets(1)

Level 1

Level 2

Level 3

Total

$

$

$

$

$

$

10,519
11,023
11,499
—
73,489
64,397
47,777
22,186
7,698
9,679
—
—
—
258,267

16

19,190
—
—
—
66,151
68,974
50,972
22,962
6,555
8,629
—
—
—
243,433

11

$

$

$

$

$

$

— $
—
92,742
21,747
—
—
—
—
59,787
23,167
—
—
27,555
224,998

$

— $
—
—
—
—
—
—
—
—
—
39,035
37,316
—
76,351

$

10,519
11,023
104,241
21,747
73,489
64,397
47,777
22,186
67,485
32,846
39,035
37,316
27,555
559,616

35,550

$

— $

35,566

— $

10,991
101,867
21,615
—
—
—
—
57,705
22,915
—
—
30,079
245,172

38,364

$

$

— $
—
—
—
—
—
—
—
—
—
33,996
37,118
—
71,114

$

19,190
10,991
101,867
21,615
66,151
68,974
50,972
22,962
64,260
31,544
33,996
37,118
30,079
559,719

— $

38,375

(1) The postretirement benefits assets are primarily life insurance contracts.

For the year ended December 31, 2015, there were no significant transfers into or out of Levels 1, 2, or 3.  For the year ended 
December 31, 2014, there were $23.1 million of mid-cap equity security investments that were transferred from Level 2 to 
Level 1.

110

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table presents a reconciliation of the beginning and ending balances of the fair value measurements using 
significant unobservable inputs (Level 3) (in thousands of dollars): 

Beginning balance - January 1, 2014
Realized gains
Unrealized (losses) gains
Purchases
Settlements
Ending balance - December 31, 2014
Realized gains
Unrealized (losses) gains
Purchases
Sales
Ending balance - December 31, 2015

Private
Equity

Real
Estate

Total

$

$

33,709
1,430
(545)
2,434
90
37,118
1,897
(3,152)
2,255
(802)
37,316

$

$

28,019
866
1,305
3,806
—
33,996
923
3,193
923
—
39,035

$

$

61,728
2,296
760
6,240
90
71,114
2,820
41
3,178
(802)
76,351

Fair Value Measurement of Level 2 and Level 3 Plan Asset Inputs:

Level 2 Bonds, Equity Securities, and Level 2 Commodities:  These investments represent U.S. government and agency bonds, 
corporate bonds, and commingled funds consisting of publicly traded equity securities or exchange-traded commodity contracts 
and other contractual claims to commodity holdings.  The U.S. government and agency bonds, as well as the corporate bonds, 
are not traded on an exchange and are valued utilizing quoted prices for similar assets or liabilities in active markets.  The 
commingled funds themselves are not publicly traded, and therefore no publicly quoted market price is readily available.  The 
value of these investments is calculated by the custodian for the fund company on a monthly basis, and is based on market 
prices of the assets held by the commingled fund divided by the number of fund shares outstanding.

Level 2 Postretirement Assets:  These assets represent an investment in a life insurance contract and are recorded at fair value, 
which is the cash surrender value, less any unpaid expenses.  The cash surrender value of this insurance contract is contractually 
equal to the insurance contract's proportionate share of the market value of an associated investment account held by the 
insurer.  The investments held by the insurer's investment account are all instruments traded on exchanges with readily 
determinable market prices.

Level 3 Real Estate:  Real estate holdings represent investments in open-ended commingled real estate funds.  As the property 
interests held in these real estate funds are not frequently traded, establishing the market value of the property interests held by 
the fund, and the resulting unit value of fund shareholders, is based on unobservable inputs including property appraisals by the 
fund company, property appraisals by independent appraisal firms, analysis of the replacement cost of the property, discounted 
cash flows generated by property rents and changes in property values, and comparisons with sale prices of similar properties in 
similar markets.  These open-ended real estate funds also furnish annual audited financial statements that are also used to 
further validate the information provided.

Level 3 Private Market Investments:  Private market investments represent two categories: fund of hedge funds and venture 
capital funds.  These funds are valued by the fund company based on the estimated fair value of the underlying fund holdings 
divided by the fund shares outstanding.  Some hedge fund strategies utilize securities with readily available market prices, 
while others utilize less liquid investment vehicles that are valued based on unobservable inputs including cost, operating 
results, recent funding activity, or comparisons with similar investment vehicles.  Venture capital fund investments are valued 
by the fund company based on estimated fair value of the underlying fund holdings divided by the fund shares outstanding.  
Some venture capital investments have progressed to the point that they have readily available exchange-based market 
valuations.  Early stage venture investments are valued based on unobservable inputs including cost, operating results, 
discounted cash flows, the price of recent funding events, or pending offers from other viable entities.  These private market 
investments furnish annual audited financial statements that are also used to further validate the information provided.

The fair value of the Level 3 assets is determined based on pricing provided or reviewed by third-party vendors to our 
investment managers.   While the input amounts used by the pricing vendors in determining fair value are not provided, and 
therefore unavailable for Idaho Power's review, the asset results are reviewed and monitored to ensure the fair values are 

111

 
 
 
 
 
 
 
 
 
 
reasonable and in line with market experience in similar assets classes.  Additionally, the audited financial statements of the 
funds are reviewed at the time they are issued.

Employee Savings Plan

Idaho Power has a defined contribution plan designed to comply with Section 401(k) of the Internal Revenue Code and that 
covers substantially all employees.  Idaho Power matches specified percentages of employee contributions to the plan.  
Matching annual contributions were approximately $7 million each year from 2013 to 2015.

Post-employment Benefits

Idaho Power provides certain benefits to former or inactive employees, their beneficiaries, and covered dependents after 
employment but before retirement, in addition to the health care benefits required under the Consolidated Omnibus Budget 
Reconciliation Act.  These benefits include salary continuation, health care and life insurance for those employees found to be 
disabled under Idaho Power’s disability plans, and health care for surviving spouses and dependents.  Idaho Power accrues a 
liability for such benefits.  The post employment benefit amounts included in other deferred credits on IDACORP’s and Idaho 
Power’s consolidated balance sheets at both December 31, 2015 and 2014 were $2.0 million.

12.  PROPERTY, PLANT AND EQUIPMENT AND JOINTLY-OWNED PROJECTS

The following table presents the major classifications of Idaho Power’s utility plant in service, annual depreciation provisions 
as a percent of average depreciable balance, and accumulated provision for depreciation for the years 2015 and 2014 (in 
thousands of dollars):

Production
Transmission
Distribution
General and Other
Total in service
Accumulated provision for depreciation
In service - net

2015

2014

Balance
$ 2,422,175
1,077,065
1,578,445
407,779
5,485,464
(1,913,927)
$ 3,571,537

Avg Rate

Balance

Avg Rate

2.46% $ 2,316,941
1,016,207
2.01%
1,516,933
2.72%
398,131
5.62%
5,248,212
2.68%
(1,841,011)
  $ 3,407,201

2.48%
2.03%
2.72%
5.49%
2.68%

Idaho Power's ownership interest in three jointly-owned generating facilities is included in the table above.  Under the joint 
operating agreements for these facilities, each participating utility is responsible for financing its share of construction, 
operating, and leasing costs.  Idaho Power's proportionate share of operating expenses for each facility is included in the 
Consolidated Statements of Income.  These jointly-owned facilities, including balance sheet amounts and the extent of Idaho 
Power’s participation, were as follows at December 31, 2015 (in thousands of dollars): 

Name of Plant
Jim Bridger Units 1-4
Boardman
Valmy Units 1 and 2

Location
Rock Springs, WY
Boardman, OR
Winnemucca, NV

(1) Idaho Power’s share of nameplate capacity.

Utility
Plant in
Service
$ 641,382
81,252
402,276

Construction
Work in 
Progress

$

46,094
113
1,135

Accumulated
Provision for 
Depreciation
296,671
$
63,715
184,604

Ownership
%
33
10
50

MW(1)
771
64
284

IERCo, Idaho Power’s wholly-owned subsidiary, is a joint venturer in BCC.  Idaho Power’s coal purchases from the joint 
venture were $93 million in 2015 and $79 million in each of 2014 and 2013.

Idaho Power has contracts to purchase the energy from four PURPA qualified facilities that are 50 percent owned by Ida-West.  
Idaho Power’s power purchases from these facilities were $8 million in 2015 and $9 million in each of 2014 and 2013.

IDACORP's consolidated VIE, Marysville, owns a hydroelectric plant with a net book value of approximately $19 million at 
December 31, 2015 and 2014.

112

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
13.  ASSET RETIREMENT OBLIGATIONS (ARO)

The guidance relating to accounting for AROs requires that legal obligations associated with the retirement of property, plant, 
and equipment be recognized as a liability at fair value when incurred and when a reasonable estimate of the fair value of the 
liability can be made.  Under the guidance, when a liability is initially recorded, the entity increases the carrying amount of the 
related long-lived asset to reflect the future retirement cost.  Over time, the liability is accreted to its estimated settlement value 
and paid, and the capitalized cost is depreciated over the useful life of the related asset.  If, at the end of the asset’s life, the 
recorded liability differs from the actual obligations paid, a gain or loss would be recognized.  As a rate-regulated entity, Idaho 
Power records regulatory assets or liabilities instead of accretion, depreciation, and gains or losses, as approved by the IPUC.  
The regulatory assets recorded under this order do not earn a return on investment. Beginning June 1, 2012, accretion, 
depreciation, and gains or losses related to the Boardman generating facility have been exempted from such regulatory 
treatment as Idaho Power is now collecting amounts related to the decommissioning of Boardman in rates.

Idaho Power’s recorded AROs relate to the removal of polychlorinated biphenyl-contaminated equipment at its distribution 
facilities and the reclamation and removal costs at its jointly-owned coal-fired generation facilities.  In 2015, changes in 
estimates at its distribution facilities and at the coal-fired generation facilities resulted in a net increase of $5.0 million in the 
recorded AROs.  The increase in the AROs in 2015 is primarily related to the impact of new coal combustion residual 
regulations on the Bridger generating facility.   

Idaho Power also has additional AROs associated with its transmission system, hydroelectric facilities, natural gas-fired 
generation facilities, and jointly owned coal-fired generation facilities; however, due to the indeterminate removal date, the fair 
value of the associated liabilities currently cannot be estimated and no amounts are recognized in the consolidated financial 
statements.

The regulated operations of Idaho Power also collect removal costs in rates for certain assets that do not have associated AROs.  
Idaho Power is required to redesignate these removal costs as regulatory liabilities.  See Note 3 for the removal costs recorded 
as regulatory liabilities on IDACORP’s and Idaho Power’s consolidated balance sheets as of December 31, 2015 and 2014.

The following table presents the changes in the carrying amount of AROs (in thousands of dollars): 

Balance at beginning of year
Accretion expense
Revisions in estimated cash flows
Liability settled
Balance at end of year

14.  INVESTMENTS

2015

2014

21,930
993
5,043
(1,813)
26,153

$

$

25,765
1,061
(4,140)
(756)
21,930

$

$

The table below summarizes IDACORP’s and Idaho Power’s investments as of December 31 (in thousands of dollars): 

Idaho Power investments:

Bridger Coal Company (equity method investment)
Exchange traded short-term bond funds and cash equivalents
Executive deferred compensation plan investments
Other investments

Total Idaho Power investments

Investments in affordable housing (IDACORP Financial Services)
Ida-West joint ventures (equity method investments)

Total IDACORP investments

2015

2014

$

$

95,159
24,459
102
—
119,720
9,909
11,123
140,752

$

$

96,219
44,942
141
1
141,303
12,762
11,393
165,458

113

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Equity Method Investments

Idaho Power, through its subsidiary IERCo, is a 33 percent owner of BCC.  Ida-West, through separate subsidiaries, owns 50 
percent of three electric generation projects that are accounted for using the equity method:  South Forks Joint Venture, 
Hazelton/Wilson Joint Venture, and Snow Mountain Hydro LLC.  All projects are reviewed periodically for impairment.  The 
table below presents IDACORP’s and Idaho Power’s earnings (loss) of unconsolidated equity-method investments (in 
thousands of dollars):

Bridger Coal Company (Idaho Power)
Ida-West joint ventures
Other
Total

Investments in Equity Securities

2015

2014

2013

$

$

9,773
1,355
—
11,128

$

$

10,814
1,614
(56)
12,372

$

$

10,242
1,707
(10)
11,939

Investments in securities classified as available-for-sale securities are reported at fair value.  Any unrealized gains or losses on 
available-for-sale securities are included in income, as the fair value option has been elected for these instruments.  Unrealized 
gains and losses on available-for-sale securities were immaterial at December 31, 2015 and December 31, 2014.  The following 
table summarizes sales of available-for-sale securities (in thousands of dollars):

Proceeds from sales
Gross realized gains from sales
Gross realized losses from sales

2015

2014

2013

$

$

34,243
—
—

— $
—
—

25,661
11,637
—

At the end of each reporting period, IDACORP and Idaho Power analyze securities in loss positions to determine whether they 
have experienced a decline in market value that is considered other-than-temporary.  At December 31, 2015 and December 31, 
2014, there were no indicators of other-than-temporary impairment related to IDACORP's and Idaho Power's investments.  

Investments in Affordable Housing

IFS invests primarily in affordable housing developments, which provide a return principally by reducing federal and state 
income taxes through tax credits and accelerated tax depreciation benefits.  IFS has focused on a diversified approach to its 
investment strategy in order to limit both geographic and operational risk, with most of IFS’s investments having been made 
through syndicated funds.

114

 
 
 
 
 
 
 
 
 
 
 
 
15.  DERIVATIVE FINANCIAL INSTRUMENTS

Commodity Price Risk

Idaho Power is exposed to market risk relating to electricity, natural gas, and other fuel commodity prices, all of which are 
heavily influenced by supply and demand.  Market risk may be influenced by market participants’ nonperformance of their 
contractual obligations and commitments, which affects the supply of or demand for the commodity.  Idaho Power uses 
derivative instruments, such as physical and financial forward contracts, for both electricity and fuel to manage the risks 
relating to these commodity price exposures.  The primary objectives of Idaho Power’s energy purchase and sale activity are to 
meet the demand of retail electric customers, maintain appropriate physical reserves to ensure reliability, and make economic 
use of temporary surpluses that may develop.

All of Idaho Power's derivative instruments have been entered into for the purpose of economically hedging forecasted 
purchases and sales, though none of these instruments have been designated as cash flow hedges.  Idaho Power offsets fair 
value amounts recognized on its balance sheet and applies collateral related to derivative instruments executed with the same 
counterparty under the same master netting agreement.  Idaho Power does not offset a counterparty's current derivative 
contracts with the counterparty's long-term derivative contracts, although Idaho Power's master netting arrangements would 
allow current and long-term positions to be offset in the event of default.  Also, in the event of default, Idaho Power's master 
netting arrangements would allow for the offsetting of all transactions executed under the master netting arrangement.  These 
types of transactions may include non-derivative instruments, derivatives qualifying for scope exceptions, receivables and 
payables arising from settled positions, and other forms of non-cash collateral (such as letters of credit).  These types of 
transactions are excluded from the offsetting presented in the derivative fair value and offsetting table below.

The table below presents the gains and losses on derivatives not designated as hedging instruments for the years ended 
December 31, 2015, 2014 and 2013 (in thousands of dollars):

Financial swaps

Financial swaps

Financial swaps

Financial swaps

Forward contracts

Forward contracts

Location of Realized Gain/(Loss) on
Derivatives Recognized in Income
Off-system sales

Purchased power

Fuel expense

Other operations and maintenance

Off-system sales

Purchased power

Gain/(Loss) on Derivatives Recognized in Income(1)
2014

2015

2013

$

2,882

$

748
(6,045)
(50)

(4,119) $
(1,416)
3,862
(158)

—
(6)
54

277
(279)
94

(2,637)
947

731

35

185
(196)
217

Forward contracts
(1)  Excludes unrealized gains or losses on derivatives, which are recorded on the balance sheet as regulatory assets or regulatory liabilities.

Fuel expense

Settlement gains and losses on electricity swap contracts are recorded on the income statement in off-system sales or purchased 
power depending on the forecasted position being economically hedged by the derivative contract.  Settlement gains and losses 
on contracts for natural gas are reflected in fuel expense.  Settlement gains and losses on diesel derivatives are recorded in other 
operations and maintenance expense.  See Note 16 for additional information concerning the determination of fair value for 
Idaho Power’s assets and liabilities from price risk management activities.

115

 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative Instrument Summary

The table below presents the fair values and locations of derivative instruments not designated as hedging instruments recorded 
on the balance sheets and reconciles the gross amounts of derivatives recognized as assets and as liabilities to the net amounts 
presented in the balance sheets at December 31, 2015 and 2014 (in thousands of dollars): 

Balance Sheet Location

December 31, 2015
Current:

Other current assets
Other current liabilities

Financial swaps
Financial swaps
Forward contracts Other current assets
Forward contracts Other current liabilities

Long-term:

Financial swaps

Other assets

Total

December 31, 2014
Current:

Other current assets
Other current liabilities

Financial swaps
Financial swaps
Forward contracts Other current assets
Forward contracts Other current liabilities

Long-term:

$

$

$

Asset Derivatives

Liability Derivatives

Gross
Fair
Value

Amounts
Offset

Net
Assets

Gross
Fair
Value

Amounts
Offset

Net
Liabilities

$

999
177
64
—

(785) (1) $
(177)
—
—

214
—
64
—

$

785
5,146
—
3

148
1,388

$

(22)
(984)

2,509
379
64
—

$ (2,002)
(379)
—
—

126
404

22
$ 5,956

507
—
64
—

$

756
4,335
—
5

$

$

$

$

$

$

(785)
(177)
—
—

(22)
(984)

(756)
(379) (1)
—
—

$

$

$

$

—
4,969
—
3

—
4,972

—
3,956
—
5

—
3,961

Forward contracts Other assets
Total

63
3,015

—
$ (2,381)

$

63
634

—
$ 5,096

—
$ (1,135)

(1) Current asset and current liability derivative amounts offset include $0.9 million of collateral receivable and $1.2 million of collateral payable and for the 
periods ending December 31, 2015 and 2014, respectively.

The table below presents the volumes of derivative commodity forward contracts and swaps outstanding at December 31, 2015 
and 2014 (in thousands of units):

Commodity

Electricity purchases
Electricity sales
Natural gas purchases
Natural gas sales
Diesel purchases

Credit Risk

Units
MWh
MWh
MMBtu
MMBtu
Gallons

December 31,

2015

2014

357
120
11,597
78
1,068

115
238
6,913
409
243

At December 31, 2015, Idaho Power did not have material credit risk exposure from financial instruments, including 
derivatives.  Idaho Power monitors credit risk exposure through reviews of counterparty credit quality, corporate-wide 
counterparty credit exposure, and corporate-wide counterparty concentration levels.  Idaho Power manages these risks by 
establishing credit and concentration limits on transactions with counterparties and requiring contractual guarantees, cash 
deposits, or letters of credit from counterparties or their affiliates, as deemed necessary.  Idaho Power’s physical power 
contracts are commonly under Western Systems Power Pool agreements, physical gas contracts are usually under North 
American Energy Standards Board contracts, and financial transactions are usually under International Swaps and Derivatives 
Association, Inc. contracts.  These contracts contain adequate assurance clauses requiring collateralization if a counterparty has 
debt that is downgraded below investment grade by at least one rating agency.  

116

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Credit-Contingent Features

Certain of Idaho Power's derivative instruments contain provisions that require Idaho Power's unsecured debt to maintain an 
investment grade credit rating from Moody's Investors Service and Standard & Poor's Ratings Services.  If Idaho Power's 
unsecured debt were to fall below investment grade, it would be in violation of these provisions, and the counterparties to the 
derivative instruments could request immediate payment or demand immediate and ongoing full overnight collateralization on 
derivative instruments in net liability positions.  The aggregate fair value of all derivative instruments with credit-risk-related 
contingent features that were in a liability position at December 31, 2015, was $5.7 million.  Idaho Power posted $0.9 million 
cash collateral related to this amount.  If the credit-risk-related contingent features underlying these agreements were triggered 
on December 31, 2015, Idaho Power would have been required to post an additional $9.0 million of cash collateral to its 
counterparties.

16.  FAIR VALUE MEASUREMENTS

IDACORP and Idaho Power have categorized their financial instruments into a three-level fair value hierarchy, based on the 
priority of the inputs to the valuation technique.  The fair value hierarchy gives the highest priority to quoted prices in active 
markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3).  If the inputs used to 
measure the financial instruments fall within different levels of the hierarchy, the categorization is based on the lowest level 
input that is significant to the fair value measurement of the instrument.

Financial assets and liabilities recorded on the consolidated balance sheets are categorized based on the inputs to the valuation 
techniques as follows:

•      Level 1:  Financial assets and liabilities whose values are based on unadjusted quoted prices for identical assets or 

liabilities in an active market that IDACORP and Idaho Power has the ability to access.

•      Level 2:  Financial assets and liabilities whose values are based on the following:

a) quoted prices for similar assets or liabilities in active markets;
b) quoted prices for identical or similar assets or liabilities in non-active markets;
c) pricing models whose inputs are observable for substantially the full term of the asset or liability; and
d) pricing models whose inputs are derived principally from or corroborated by observable market data through 
correlation or other means for substantially the full term of the asset or liability.

IDACORP and Idaho Power Level 2 inputs are based on quoted market prices adjusted for location using 
corroborated, observable market data.

•      Level 3:  Financial assets and liabilities whose values are based on prices or valuation techniques that require inputs 
that are both unobservable and significant to the overall fair value measurement.  These inputs reflect management’s 
own assumptions about the assumptions a market participant would use in pricing the asset or liability.

IDACORP’s and Idaho Power’s assessment of a particular input's significance to the fair value measurement requires judgment 
and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy.  An item 
recorded at fair value is reclassified among levels when changes in the nature of valuation inputs cause the item to no longer 
meet the criteria for the level in which it was previously categorized.  There were no transfers between levels or material 
changes in valuation techniques or inputs during the years ended December 31, 2015 and 2014.

117

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following table presents information about IDACORP’s and Idaho Power’s assets and liabilities measured at fair value on a 
recurring basis as of December 31, 2015 and 2014 (in thousands of dollars): 

December 31, 2015

December 31, 2014

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Assets:

Money market funds:

IDACORP - Parent
Idaho Power

Derivatives
Trading securities:  Equity securities
Available-for-sale securities: ETFs

Liabilities:

Derivatives

$

$

1,000
10,000
340
102
24,459

— $ — $ 1,000
— 10,000
—
404
—
64
102
—
—
— 24,459
—

$ — $ — $ — $ —
100
—
634
—
141
—
— 44,942

100
506
141
44,942

—
128
—
—

$

286

$ 4,686

$ — $ 4,972

$

17

$ 3,944

$ — $ 3,961

Idaho Power’s derivatives are contracts entered into as part of its management of loads and resources.  Electricity derivatives 
are valued on the Intercontinental Exchange (ICE) with quoted prices in an active market.  Natural gas and diesel derivative 
valuations are performed using New York Mercantile Exchange (NYMEX) and ICE pricing, adjusted for location basis, which 
are also quoted under NYMEX and ICE pricing.  Trading securities consist of employee-directed investments held in a Rabbi 
Trust and are related to an executive deferred compensation plan.  Available-for-sale securities are exchange-traded short-term 
bond and money market funds related to the SMSP and are held in a Rabbi Trust. 

The table below presents the carrying value and estimated fair value of financial instruments that are not reported at fair value, 
as of December 31, 2015 and 2014, using available market information and appropriate valuation methodologies (in thousands 
of dollars):

December 31, 2015

December 31, 2014

Carrying
Amount

Estimated Fair
Value

Carrying
Amount

Estimated Fair
Value

(thousands of dollars)

$

3,804

$

3,804

$

3,804

$

3,804

1,726,474

1,813,243

1,615,502

1,788,197

IDACORP
Assets:

Notes receivable(1)

Liabilities:

Long-term debt(1)

Idaho Power
Liabilities:

Long-term debt(1)

1,726,474
(1) Notes receivable and long-term debt are categorized as Level 3 and Level 2, respectively, of the fair value hierarchy, as defined earlier in this Note 16.

1,813,243

1,615,502

$

$

$

$

1,788,197  

Notes receivable are related to Ida-West and are valued based on unobservable inputs, including discounted cash flows, which 
are partially based on forecasted hydroelectric conditions.  Long-term debt is not traded on an exchange and is valued using 
quoted rates for similar debt in active markets.  Carrying values for cash and cash equivalents, deposits, customer and other 
receivables, notes payable, accounts payable, interest accrued, and taxes accrued approximate fair value.

17.  SEGMENT INFORMATION

IDACORP’s only reportable segment is utility operations.  The utility operations segment’s primary source of revenue is the 
regulated operations of Idaho Power.  Idaho Power’s regulated operations include the generation, transmission, distribution, 
purchase, and sale of electricity.  This segment also includes income from IERCo, a wholly-owned subsidiary of Idaho Power 
that is also subject to regulation and is a 33 percent owner of BCC, an unconsolidated joint venture.

IDACORP’s other operating segments are below the quantitative and qualitative thresholds for reportable segments and are 
included in the “All Other” category in the table below.  This category is comprised of IFS’s investments in affordable housing 
developments and historic rehabilitation projects, Ida-West’s joint venture investments in small hydroelectric generation 

118

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
projects, the remaining activities of IESCo, the successor to which wound down its energy marketing operations in 2003, and 
IDACORP’s holding company expenses.

The table below summarizes the segment information for IDACORP’s utility operations and the total of all other segments, and 
reconciles this information to total enterprise amounts (in thousands of dollars):

Utility
Operations

All
Other

Eliminations

Consolidated
Total

2015

Revenues

Operating income

Other income

Interest income

Equity-method income

Interest expense

Income before income taxes

Income tax expense (benefit)

Income attributable to IDACORP, Inc.

Total assets

Expenditures for long-lived assets

2014

Revenues
Operating income
Other income
Interest income
Equity-method income
Interest expense
Income before income taxes
Income tax expense (benefit)
Income attributable to IDACORP, Inc.
Total assets
Expenditures for long-lived assets

2013

Revenues
Operating income
Other income
Interest income
Equity-method income
Interest expense
Income before income taxes
Income tax expense (benefit)
Income attributable to IDACORP, Inc.
Total assets
Expenditures for long-lived assets

2,784
(155)
37

64

1,355

278

1,024
(2,468)
3,696

71,704

52

3,873
259
37
34
1,558
265
1,623
(2,744)
4,093
109,044
183

3,116
51
152
44
1,697
425
1,519
(4,034)
5,676
109,541
4

$

— $

1,270,289

—

—
(62)
—
(62)
—

—

—
(17,225)
—

— $
—
—
(34)
—
(34)
—
—
—
(12,513)
—

— $
—
—
(39)
—
(39)
—
—
—
(11,389)
—

282,097

25,905

3,039

11,128

81,934

240,235

45,760

194,679

6,023,314

278,957

1,282,524
253,696
21,554
2,705
12,372
79,801
210,526
16,772
193,480
5,701,037
274,094

1,246,214
291,742
29,440
2,431
11,939
81,032
254,520
72,226
182,417
5,347,380
235,310

$

$

$

1,267,505

$

$

$

$

$

282,252

25,868

3,037

9,773

81,718

239,211

48,228

190,983

5,968,835

278,905

1,278,651
253,437
21,517
2,705
10,814
79,570
208,903
19,516
189,387
5,604,506
273,911

1,243,098
291,691
29,288
2,426
10,242
80,646
253,001
76,260
176,741
5,249,228
235,306

119

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
18.  OTHER INCOME AND EXPENSE

The following table presents the components of IDACORP’s Other income, net and Idaho Power's Other (expense) income, net 
(in thousands of dollars):

IDACORP - Other income, net
Investment income, net
Carrying charges on regulatory assets
Gain on sale of investments
Other income
Life insurance proceeds, net of premiums
Other expenses

Total

Idaho Power - Other (expense) income, net
Investment income, net
Carrying charges on regulatory assets
Gain on sale of investments
Other income
SMSP expense
Life insurance proceeds, net of premiums
Other expense

Total

2015

2014

2013

2,890
1,774
—
777
1,739
(21)
7,159

$

$

$

2,889
1,774
—
739
(9,937)
1,739
(2,275)
(5,071) $

2,655
1,949
—
588
1,164
(28)
6,328

$

$

$

2,655
1,949
—
551
(8,339)
1,164
(2,343)
(4,363) $

2,373
2,204
11,637
852
18
(71)
17,013

2,369
2,204
11,637
700
(8,488)
18
(2,668)
5,772

$

$

$

$

19.  CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME

Comprehensive income includes net income, unrealized holding gains and losses on available-for-sale marketable securities, 
and amounts related to the SMSP.  The table below presents changes in components of accumulated other comprehensive 
income (AOCI), net of tax, during the years ended December 31, 2015, 2014, and 2013 (in thousands of dollars).  Items in 
parentheses indicate reductions to AOCI.

Unrealized Gains and
Losses on Available-for-
Sale Securities

Defined Benefit
Pension Items

Total

December 31, 2013
Balance at beginning of period
Other comprehensive income before reclassifications
Amounts reclassified out of AOCI
Net current-period other comprehensive income
Balance at end of period
December 31, 2014
Balance at beginning of period
Other comprehensive income before reclassifications
Amounts reclassified out of AOCI
Net current-period other comprehensive income
Balance at end of period
December 31, 2015

Balance at beginning of period

Other comprehensive income before reclassifications

Amounts reclassified out of AOCI

Net current-period other comprehensive income

Balance at end of period

$

$

$

$

$

$

120

$

4,136
2,951
(7,087)
(4,136)

— $

— $
—
—
—
— $

— $

—

—

—

— $

(21,252) $
2,840
1,859
4,699
(16,553) $

(16,553) $
(9,333)
1,728
(7,605)
(24,158) $

(24,158) $
214

2,668

2,882
(21,276) $

(17,116)
5,791
(5,228)
563
(16,553)

(16,553)
(9,333)
1,728
(7,605)
(24,158)

(24,158)
214

2,668

2,882
(21,276)

 
 
 
 
 
 
 
 
 
 
The table below presents amounts reclassified out of components of AOCI and the income statement location of those amounts 
reclassified during the years ended December 31, 2015, 2014, and 2013 (in thousands of dollars).  Items in parentheses indicate 
increases to net income.

Unrealized gains on available-for-sale securities
Realized gain on sale of securities, before tax(1)
Tax benefit(2)
Net of tax

Amortization of defined benefit pension items(3)
Prior service cost
Net loss

Total before tax
Tax benefit(2)
Net of tax

Total reclassification for the period

Amount Reclassified from AOCI
Year Ended December 31,

2015

2014

2013

— $
—
—

— $
—
—

(11,637)
4,550
(7,087)

185
4,195
4,380
(1,712)
2,668
2,668

$

220
2,618
2,838
(1,110)
1,728
1,728

$

212
2,839
3,051
(1,192)
1,859
(5,228)

$

$

(1) The realized gain is included in IDACORP's consolidated income statement in other income, net and in Idaho Power's consolidated income statements in 
other income (expense), net.
(2) The tax benefit is included in income tax expense (benefit) in the consolidated income statements of both IDACORP and Idaho Power.
(3) Amortization of these items is included in IDACORP's consolidated income statements in other operating expenses and in Idaho Power's consolidated 
income statements in other expense, net.

20.  RELATED PARTY TRANSACTIONS

IDACORP:  Idaho Power performs corporate functions such as financial, legal, and management services for IDACORP and its 
subsidiaries.  Idaho Power charges IDACORP for the costs of these services based on service agreements and other specifically 
identified costs.  For these services Idaho Power billed IDACORP $0.9 million in 2015, $1.4 million in 2014, and $1.0 million 
in 2013.

Ida-West:  Idaho Power purchases all of the power generated by four of Ida-West’s hydroelectric projects located in Idaho.  
Idaho Power paid Ida-West $8 million in 2015 and $9 million in each of 2014 and 2013.

121

 
 
 
 
 
 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of
IDACORP, Inc.
Boise, Idaho

We have audited the accompanying consolidated balance sheets of IDACORP, Inc. and subsidiaries (the “Company”) as of 
December 31, 2015 and 2014, and the related consolidated statements of income, comprehensive income, equity, and cash 
flows for each of the three years in the period ended December 31, 2015.  Our audits also included the financial statement 
schedules listed in the Index at Item 8.  These financial statements and financial statement schedules are the responsibility of 
the Company’s management.  Our responsibility is to express an opinion on the financial statements and financial statement 
schedules based on our 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 audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement.  An audit includes examining, on a test basis, evidence supporting the amounts 
and disclosures in the financial statements.  An audit also includes assessing the accounting principles used and significant 
estimates made by management, as well as evaluating the overall financial statement presentation.  We believe that our audits 
provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of 
IDACORP, Inc. and subsidiaries at December 31, 2015 and 2014, and the results of their operations and their cash flows for 
each of the three years in the period ended December 31, 2015, in conformity with accounting principles generally accepted in 
the United States of America.  Also, in our opinion, such financial statement schedules, when considered in relation to the basic 
consolidated financial statements taken as a whole, present fairly, in all material respects, the information set forth therein.

As discussed in Note 1 to the consolidated financial statements, the Company has changed its method of presentation for 
deferred income taxes in 2015 due to the adoption of Accounting Standards Update (ASU) 2015-17 Income Taxes (Topic 740)-
Balance Sheet Classification of Deferred Taxes.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
Company’s internal control over financial reporting as of December 31, 2015, based on the criteria established in Internal 
Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission 
and our report dated February 18, 2016 expressed an unqualified opinion on the Company’s internal control over financial 
reporting.

/s/ DELOITTE & TOUCHE LLP

Boise, Idaho
February 18, 2016 

122

 
 
 
 
 
 
 
 
 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholder of
Idaho Power Company
Boise, Idaho

We have audited the accompanying consolidated balance sheets of Idaho Power Company and subsidiary (the “Company”) as 
of December 31, 2015 and 2014, and the related consolidated statements of income, comprehensive income, retained earnings, 
and cash flows for each of the three years in the period ended December 31, 2015.  Our audits also included the financial 
statement schedule listed in the Index at Item 8.  These financial statements and financial statement schedule are the 
responsibility of the Company’s management.  Our responsibility is to express an opinion on the financial statements and 
financial statement schedule based on our 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 audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement.  An audit includes examining, on a test basis, evidence supporting the amounts 
and disclosures in the financial statements.  An audit also includes assessing the accounting principles used and significant 
estimates made by management, as well as evaluating the overall financial statement presentation.  We believe that our audits 
provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of Idaho 
Power Company and subsidiary at December 31, 2015 and 2014, and the results of their operations and their cash flows for 
each of the three years in the period ended December 31, 2015, in conformity with accounting principles generally accepted in 
the United States of America.  Also, in our opinion, such financial statement schedule, when considered in relation to the basic 
consolidated financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein.

As discussed in Note 1 to the consolidated financial statements, the Company has changed its method of presentation for 
deferred income taxes in 2015 due to the adoption of Accounting Standards Update (ASU) 2015-17 Income Taxes (Topic 740)-
Balance Sheet Classification of Deferred Taxes.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
Company’s internal control over financial reporting as of December 31, 2015, based on the criteria established in Internal 
Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission 
and our report dated February 18, 2016 expressed an unqualified opinion on the Company’s internal control over financial 
reporting.

/s/ DELOITTE & TOUCHE LLP

Boise, Idaho
February 18, 2016 

123

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SUPPLEMENTAL FINANCIAL INFORMATION, UNAUDITED

QUARTERLY FINANCIAL DATA

The following unaudited information is presented for each quarter of 2015 and 2014 (in thousands of dollars, except for per 
share amounts).  In the opinion of each company, all adjustments necessary for a fair statement of such amounts for such 
periods have been included.  The results of operations for the interim periods are not necessarily indicative of the results to be 
expected for the full year.  Accordingly, earnings information for any three-month period should not be considered as a basis for 
estimating operating results for a full fiscal year.  Amounts are based upon quarterly statements and the sum of the quarters may 
not equal the annual amount reported.

IDACORP, Inc.
2015

Revenues
Operating income
Net income
Net income attributable to IDACORP, Inc.
Basic earnings per share

Diluted earnings per share

2014

Revenues
Operating income
Net income
Net income attributable to IDACORP, Inc.
Basic earnings per share
Diluted earnings per share

Idaho Power Company
2015

Revenues
Income from operations
Net income

2014

Revenues
Income from operations
Net income

March 31

June 30

September 30 December 31

Quarter Ended

$

$

$

$

$
$

$

$

$

$

$

$

$
$

$

$

279,395
42,904
23,344
23,430
0.47

0.47

292,719
48,578
27,185
27,404
0.55
0.55

278,774
46,159
23,462

292,320
51,949
27,900

$

$

$

$

$
$

$

$

336,328
85,976
66,190
66,080
1.32

1.31

317,783
71,809
44,697
44,540
0.89
0.89

335,321
88,836
64,340

316,655
74,369
42,653

$

$

$

$

$
$

$

$

369,165
104,664
73,267
73,336
1.46

1.46

382,201
105,722
87,234
86,889
1.73
1.73

368,517
107,614
71,727

380,711
107,644
84,600

285,401
48,552
31,673
31,832
0.63

0.63

289,821
27,586
34,638
34,648
0.69
0.69

284,893
51,833
31,455

288,964
30,129
34,233

124

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL 
DISCLOSURE

None

Disclosure Controls and Procedures - IDACORP, Inc.

ITEM 9A.  CONTROLS AND PROCEDURES

The Chief Executive Officer and Chief Financial Officer of IDACORP, Inc., based on their evaluation of IDACORP, Inc.’s 
disclosure controls and procedures (as defined in Exchange Act Rule 13a-15(e)) as of December 31, 2015, have concluded that 
IDACORP, Inc.’s disclosure controls and procedures are effective as of that date.

Internal Control Over Financial Reporting - IDACORP, Inc.

Management’s Annual Report on Internal Control Over Financial Reporting

The management of IDACORP is responsible for establishing and maintaining adequate internal control over financial 
reporting for IDACORP.  Internal control over financial reporting is defined in Rule 13a-15(f) promulgated under the Securities 
Exchange Act of 1934 as a process designed by, or under the supervision of, the company’s principal executive and principal 
financial officers and effected by the company’s board of directors, management and other personnel, to provide reasonable 
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in 
accordance with accounting principles generally accepted in the United States of America and includes those policies and 
procedures that:

• 

• 

• 

pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and 
dispositions of the assets of the company;
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements 
in accordance with accounting principles generally accepted in the United States of America, and that receipts and 
expenditures of the company are being made only in accordance with the authorizations of management and directors 
of the company; and
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.  
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.

IDACORP’s management assessed the effectiveness of the company’s internal control over financial reporting as of 
December 31, 2015.  In making this assessment, the company’s management used the criteria set forth by the Committee of 
Sponsoring Organizations of the Treadway Commission in Internal Control-Integrated Framework (2013).

Based on its assessment, management concluded that, as of December 31, 2015, IDACORP’s internal control over financial 
reporting is effective based on those criteria.

IDACORP’s independent registered public accounting firm has audited the financial statements included in this Annual Report 
on Form 10-K for the year ended December 31, 2015 and issued a report, which appears on the next page and expresses an 
unqualified opinion on the effectiveness of IDACORP’s internal control over financial reporting as of December 31, 2015.

February 18, 2016 

125

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of
IDACORP, Inc.
Boise, Idaho

We have audited the internal control over financial reporting of IDACORP, Inc. and subsidiaries (the “Company”) as of 
December 31, 2015, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee 
of Sponsoring Organizations of the Treadway Commission.  The Company’s management is responsible 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 Annual Report on Internal Control over Financial Reporting.  Our 
responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States).  
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal 
control over financial reporting was maintained in all material respects.  Our audit included obtaining an understanding of 
internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and 
operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered 
necessary in the circumstances.  We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed by, or under the supervision of, the company’s 
principal executive and principal financial officers, or persons performing similar functions, and effected by the company’s 
board of directors, management, and other personnel 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 (1) pertain to the 
maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of 
the company; (2) 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 (3) 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 the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper 
management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely 
basis.  Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods 
are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of 
compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of 
December 31, 2015, based on the criteria established in Internal Control - Integrated Framework (2013) issued by the 
Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
consolidated financial statements and financial statement schedules as of and for the year ended December 31, 2015 of the 
Company and our report dated February 18, 2016 expressed an unqualified opinion on those financial statements and financial 
statement schedules and included an explanatory paragraph regarding the Company’s change in the method of presentation for 
deferred income taxes.

/s/ DELOITTE & TOUCHE LLP

Boise, Idaho
February 18, 2016 

126

 
 
 
 
 
 
 
 
 
 
 
 
 
Disclosure Controls and Procedures - Idaho Power Company

The Chief Executive Officer and Chief Financial Officer of Idaho Power Company, based on their evaluation of Idaho Power 
Company's disclosure controls and procedures (as defined in Exchange Act Rule 13a-15(e)) as of December 31, 2015, have 
concluded that Idaho Power Company's disclosure controls and procedures are effective as of that date.

Internal Control Over Financial Reporting - Idaho Power Company 

Management’s Annual Report on Internal Control Over Financial Reporting

The management of Idaho Power Company (Idaho Power) is responsible for establishing and maintaining adequate internal 
control over financial reporting of Idaho Power.  Internal control over financial reporting is defined in Rule 13a-15(f) 
promulgated under the Securities Exchange Act of 1934 as a process designed by, or under the supervision of, the company’s 
principal executive and principal financial officers and effected by the company’s board of directors, management and other 
personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial 
statements for external purposes in accordance with accounting principles generally accepted in the United States of America 
and includes those policies and procedures that:

• 

• 

• 

pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and 
dispositions of the assets of the company;
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements 
in accordance with accounting principles generally accepted in the United States of America, and that receipts and 
expenditures of the company are being made only in accordance with the authorizations of management and directors 
of the company; and
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.  
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.

Idaho Power’s management assessed the effectiveness of the company’s internal control over financial reporting as of 
December 31, 2015.  In making this assessment, the company’s management used the criteria set forth by the Committee of 
Sponsoring Organizations of the Treadway Commission in Internal Control-Integrated Framework (2013).

Based on its assessment, management concluded that, as of December 31, 2015, Idaho Power’s internal control over financial 
reporting is effective based on those criteria.

Idaho Power’s independent registered public accounting firm has audited the financial statements included in this Annual 
Report on Form 10-K for the year ended December 31, 2015 and issued a report which appears on the next page and expresses 
an unqualified opinion on the effectiveness of Idaho Power’s internal control over financial reporting as of December 31, 2015.

February 18, 2016 

127

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholder of
Idaho Power Company
Boise, Idaho

We have audited the internal control over financial reporting of Idaho Power Company and subsidiary (the “Company”) as of 
December 31, 2015, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee 
of Sponsoring Organizations of the Treadway Commission.  The Company’s management is responsible 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 Annual Report on Internal Control over Financial Reporting.  Our 
responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States).  
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal 
control over financial reporting was maintained in all material respects.  Our audit included obtaining an understanding of 
internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and 
operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered 
necessary in the circumstances.  We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed by, or under the supervision of, the company’s 
principal executive and principal financial officers, or persons performing similar functions, and effected by the company’s 
board of directors, management, and other personnel 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 (1) pertain to the 
maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of 
the company; (2) 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 (3) 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 the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper 
management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely 
basis.  Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods 
are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of 
compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of 
December 31, 2015, based on the criteria established in Internal Control - Integrated Framework (2013) issued by the 
Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 
consolidated financial statements and financial statement schedule as of and for the year ended December 31, 2015 of the 
Company and our report dated February 18, 2016 expressed an unqualified opinion on those financial statements and financial 
statement schedule and included an explanatory paragraph regarding the Company’s change in the method of presentation for 
deferred income taxes.

/s/ DELOITTE & TOUCHE LLP

Boise, Idaho
February 18, 2016 

128

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Changes in Internal Control Over Financial Reporting - IDACORP, Inc. and Idaho Power Company

There have been no changes in IDACORP, Inc.’s or Idaho Power Company’s internal control over financial reporting during the 
quarter ended December 31, 2015 that have materially affected, or are reasonably likely to materially affect, IDACORP, Inc.’s 
or Idaho Power Company’s internal control over financial reporting.

None.

ITEM 9B.  OTHER INFORMATION

PART III 

ITEM 10.  DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE

The portions of IDACORP’s definitive proxy statement appearing under the captions “Proposal No. 1:  Election of Directors,” 
“Section 16(a) Beneficial Ownership Reporting Compliance,” “Board of Directors - Committees of the Board of Directors - 
Audit Committee,” “Corporate Governance at IDACORP - Codes of Business Conduct,” and "Corporate Governance at 
IDACORP - Certain Relationships and Related Transactions" to be filed pursuant to Regulation 14A for the 2016 annual 
meeting of shareholders are hereby incorporated by reference.

Information regarding IDACORP’s executive officers required by this item appears in Item 1 of this report under “Executive 
Officers of the Registrants.”

ITEM 11.  EXECUTIVE COMPENSATION

The portion of IDACORP’s definitive proxy statement appearing under the caption “Executive Compensation” to be filed 
pursuant to Regulation 14A for the 2016 annual meeting of shareholders is hereby incorporated by reference.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND 
RELATED STOCKHOLDER MATTERS

The portion of IDACORP’s definitive proxy statement appearing under the caption “Security Ownership of Directors, 
Executive Officers, and Five-Percent Shareholders” to be filed pursuant to Regulation 14A for the 2016 annual meeting of 
shareholders is hereby incorporated by reference.  The table below includes information as of December 31, 2015, with 
respect to equity compensation plans where equity securities of IDACORP may be issued.  These plans are the 1994 
Restricted Stock Plan (RSP) and the IDACORP 2000 Long-Term Incentive and Compensation Plan (LTICP).

Equity Compensation Plan Information

(a)
Number of 
securities to be 
issued upon 
exercise
of outstanding 
options, warrants 
and rights

(b)
Weighted-
average
exercise price of
outstanding 
options, 
warrants and 
rights

(c)
Number of securities 
remaining available for 
future issuance under 
equity compensation
plans (excluding 
securities reflected in 
column (a))

— $

— $
— $

—

—
—

1,059,338 (2)

—
1,059,338

Plan Category
Equity compensation plans approved by 

shareholders(1)

Equity compensation plans not approved by

shareholders

Total

(1) Consists of the RSP and the LTICP.
(2) 1,043,542 shares under the LTICP may be issued in connection with stock options, stock appreciation rights, restricted stock, restricted stock units, 
performance units, performance shares, or other equity-based awards as of December 31, 2015.  15,796 shares remain available for future issuance under 
the RSP and may be issued as restricted stock or performance-based restricted stock.  The number of shares listed in this column excludes (i) issued but 
unvested performance-based restricted shares, and (ii) issued but unvested time-based restricted shares, in both cases issued pursuant to the LTICP and 
unvested as of December 31, 2015.

129

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The portions of IDACORP’s definitive proxy statement appearing under the captions “Certain Relationships and Related 
Transactions” and “Corporate Governance at IDACORP – Director Independence and Executive Sessions” to be filed pursuant to 
Regulation 14A for the 2016 annual meeting of shareholders are hereby incorporated by reference.

ITEM 14.  PRINCIPAL ACCOUNTANT FEES AND SERVICES

IDACORP:  The portion of IDACORP’s definitive proxy statement appearing under the caption “Independent Accountant 
Billings” in the proxy statement to be filed pursuant to Regulation 14A for the 2016 annual meeting of shareholders is hereby 
incorporated by reference.

Idaho Power:  The table below presents the aggregate fees our principal independent registered public accounting firm, 
Deloitte & Touche LLP, billed or is expected to bill to Idaho Power for the fiscal years ended December 31, 2015 and 2014:

Audit fees
Audit-related fees(1)
Tax fees(2)
All other fees(3)
Total

2015

1,280,500
6,732
37,655
2,000
1,326,887

$

$

2014

1,239,913
32,300
1,640
2,000
1,275,853

$

$

(1) Audits of Idaho Power’s benefit plans and compliance audit for the U.S. Department of Energy Smart Grid Investment Grant Program.
(2) Includes fees for benefit plan tax returns and consultation related to tax planning.
(3) Accounting research tool subscription.

Policy on Audit Committee Pre-Approval:

Idaho Power and the Audit Committee are committed to ensuring the independence of the independent registered public 
accounting firm, both in fact and in appearance.  In this regard, the Audit Committee has established and periodically reviews a 
pre-approval policy for audit and non-audit services.  For 2014 and 2015, all audit and non-audit services and all fees paid in 
connection with those services were pre-approved by the Audit Committee.

In addition to the audits of Idaho Power’s consolidated financial statements, the independent public accounting firm may be 
engaged to provide certain audit-related, tax, and other services.  The Audit Committee must pre-approve all services performed 
by the independent public accounting firm to assure that the provision of those services does not impair the public accounting 
firm’s independence.  The services that the Audit Committee will consider include: audit services such as attest services, 
changes in the scope of the audit of the financial statements, and the issuance of comfort letters and consents in connection with 
financings; audit-related services such as internal control reviews and assistance with internal control reporting requirements; 
attest services related to financial reporting that are not required by statute or regulation, and accounting consultations and 
audits related to proposed transactions and new or proposed accounting rules, standards and interpretations; and tax compliance 
and planning services.  Unless a type of service to be provided by the independent public accounting firm has received general 
pre-approval, it will require specific pre-approval by the Audit Committee.  In addition, any proposed services exceeding pre-
approved cost levels will require specific pre-approval by the Audit Committee.  Under the pre-approval policy, the Audit 
Committee has delegated to the Chairman of the Audit Committee pre-approval authority for proposed services; however, the 
Chairman must report any pre-approval decisions to the Audit Committee at its next scheduled meeting.

Any request to engage the independent public accounting firm to provide a service which has not received general pre-approval 
must be submitted as a written proposal to Idaho Power’s Chief Financial Officer with a copy to the General Counsel.  The 
request must include a detailed description of the service to be provided, the proposed fee, and the business reasons for 
engaging the independent public accounting firm to provide the service.  Upon approval by the Chief Financial Officer, the 
General Counsel, and the independent public accounting firm that the proposed engagement complies with the terms of the pre-
approval policy and the applicable rules and regulations, the request will be presented to the Audit Committee or the Committee 
Chairman, as the case may be, for pre-approval.

130

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In determining whether to pre-approve the engagement of the independent public accounting firm, the Audit Committee or the 
Committee Chairman, as the case may be, must consider, among other things, the pre-approval policy, applicable rules and 
regulations, and whether the nature of the engagement and the related fees are consistent with the following principles:

•       the independent public accounting firm cannot function in the role of management of Idaho Power; and
•       the independent public accounting firm cannot audit its own work.

The pre-approval policy and separate supplements to the pre-approval policy describe the specific audit, audit related, tax, and 
other services that have the general pre-approval of the Audit Committee.  The term of any pre-approval is 12 months from the 
date of pre-approval, unless the Audit Committee specifically provides for a different period.  The Audit Committee will 
periodically revise the list of pre-approved services, based on subsequent determinations.

PART IV

ITEM 15.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(1) and (2) Please refer to Part II, Item 8 - “Financial Statements and Supplementary Data” for a complete listing of 
consolidated financial statements and financial statement schedules.

(3)  Exhibits.  Note Regarding Reliance on Statements in Agreements:  The agreements filed as exhibits to this Annual Report 
on Form 10-K are filed to provide information regarding their terms and are not intended to provide any other factual or 
disclosure information about IDACORP, Inc., Idaho Power Company, or the other parties to the agreements.  Some of the 
agreements contain statements, representations, and warranties by each of the parties to the applicable agreement.  These 
representations and warranties have been made solely for the benefit of the other parties to the applicable agreement and (a) 
should not in all instances be treated as categorical statements of fact, but rather as a way of allocating the risk to one of the 
parties to the agreement if those statements prove to be inaccurate; (b) have been qualified by disclosures that were made to the 
other party, which disclosures are not necessarily reflected in the agreement; (c) may apply standards of materiality in a way 
that is different from what may be viewed as material to investors; and (d) were made only as of the date of the applicable 
agreement or such other date or dates as may be specified in the agreement and are subject to more recent developments.  
Accordingly, readers should not rely upon the statements, representations, or warranties made in the agreements. 

Exhibit
No.
2

3.1

3.2

3.3

3.4

3.5

3.6

3.7

Exhibit Description
Agreement and Plan of Exchange between IDACORP, Inc. and
Idaho Power Company, dated as of February 2, 1998
Restated Articles of Incorporation of Idaho Power Company as
filed with the Secretary of State of Idaho on June 30, 1989

Statement of Resolution Establishing Terms of Flexible
Auction Series A, Serial Preferred Stock, Without Par Value
(cumulative stated value of $100,000 per share) of Idaho
Power Company, as filed with the Secretary of State of Idaho
on November 5, 1991
Statement of Resolution Establishing Terms of 7.07% Serial
Preferred Stock, Without Par Value (cumulative stated value of
$100 per share) of Idaho Power Company, as filed with the
Secretary of State of Idaho on June 30, 1993
Articles of Share Exchange, as filed with the Secretary of State
of Idaho on September 29, 1998

Articles of Amendment to Restated Articles of Incorporation of
Idaho Power Company, as filed with the Secretary of State of
Idaho on June 15, 2000
Articles of Amendment to Restated Articles of Incorporation of
Idaho Power Company, as filed with the Secretary of State of
Idaho on January 21, 2005
Articles of Amendment to Restated Articles of Incorporation of
Idaho Power Company, as amended, as filed with the Secretary
of State of Idaho on November 19, 2007

131

Incorporated by Reference

Form
S-4

File No.
333-48031

Exhibit
No.
A

Date
3/16/1998

Included
Herewith

S-3 Post-
Effective
Amend.
No. 2
S-3

33-00440

4(a)(xiii)

6/30/1989

33-65720

4(a)(ii)

7/7/1993

S-3

33-65720

4(a)(iii)

7/7/1993

S-8 Post-
Effective
Amend.
No. 1
10-Q

33-56071-9
9

3(d)

10/1/1998

1-3198

3(a)(iii)

8/4/2000

8-K

1-3198

3.3

1/26/2005

8-K

1-3198

3.3

11/19/2007

 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
No.
3.8

3.9

3.10
3.11

3.12

3.13

3.14

4.1

4.2

Exhibit Description
Articles of Amendment to Restated Articles of Incorporation of
Idaho Power Company, as amended, as filed with the Secretary
of State of Idaho on May 18, 2012
Amended Bylaws of Idaho Power Company, amended on
November 15, 2007 and presently in effect
Articles of Incorporation of IDACORP, Inc.
Articles of Amendment to Articles of Incorporation of
IDACORP, Inc. as filed with the Secretary of State of Idaho on
March 9, 1998
Articles of Amendment to Articles of Incorporation of
IDACORP, Inc. creating A Series Preferred Stock, without par
value, as filed with the Secretary of State of Idaho on
September 17, 1998
Articles of Amendment to Articles of Incorporation of
IDACORP, Inc., as amended, as filed with the Secretary of
State of Idaho on May 18, 2012
Amended and Restated Bylaws of IDACORP, Inc., amended
on October 29, 2014 and presently in effect
Mortgage and Deed of Trust, dated as of October 1, 1937,
between Idaho Power Company and Deutsche Bank Trust
Company Americas (formerly known as Bankers Trust
Company) and R. G. Page, as Trustees
Idaho Power Company Supplemental Indentures to Mortgage
and Deed of Trust:

Incorporated by Reference

Form
8-K

File No.
1-3198

Exhibit
No.
3.14

Date
5/21/2012

Included
Herewith

8-K

1-3198

3.2

3.1
3.2

11/19/2007

11/4/1998
11/4/1998

333-64737
333-64737

333-00139-
99

3(b)

9/22/1998

1-14465

3.13

5/21/2012

S-3
S-3
Amend.
No. 1
S-3 Post-
Effective
Amend.
No. 1
8-K

10-Q

1-14465

3.15

10/30/2014

2-3413

B-2

File number 1-MD, as Exhibit B-2-a, First, July 1, 1939
File number 2-5395, as Exhibit 7-a-3, Second, November 15, 1943
File number 2-7237, as Exhibit 7-a-4, Third, February 1, 1947
File number 2-7502, as Exhibit 7-a-5, Fourth, May 1, 1948
File number 2-8398, as Exhibit 7-a-6, Fifth, November 1, 1949
File number 2-8973, as Exhibit 7-a-7, Sixth, October 1, 1951
File number 2-12941, as Exhibit 2-C-8, Seventh, January 1, 1957
File number 2-13688, as Exhibit 4-J, Eighth, July 15, 1957
File number 2-13689, as Exhibit 4-K, Ninth, November 15, 1957
File number 2-14245, as Exhibit 4-L, Tenth, April 1, 1958
File number 2-14366, as Exhibit 2-L, Eleventh, October 15, 1958
File number 2-14935, as Exhibit 4-N, Twelfth, May 15, 1959
File number 2-18976, as Exhibit 4-O, Thirteenth, November 15, 1960
File number 2-18977, as Exhibit 4-Q, Fourteenth, November 1, 1961
File number 2-22988, as Exhibit 4-B-16, Fifteenth, September 15, 1964
File number 2-24578, as Exhibit 4-B-17, Sixteenth, April 1, 1966
File number 2-25479, as Exhibit 4-B-18, Seventeenth, October 1, 1966
File number 2-45260, as Exhibit 2(c), Eighteenth, September 1, 1972
File number 2-49854, as Exhibit 2(c), Nineteenth, January 15, 1974
File number 2-51722, as Exhibit 2(c)(i), Twentieth, August 1, 1974
File number 2-51722, as Exhibit 2(c)(ii), Twenty-first, October 15, 1974
File number 2-57374, as Exhibit 2(c), Twenty-second, November 15, 1976
File number 2-62035, as Exhibit 2(c), Twenty-third, August 15, 1978
File number 33-34222, as Exhibit 4(d)(iii), Twenty-fourth, September 1, 1979
File number 33-34222, as Exhibit 4(d)(iv), Twenty-fifth, November 1, 1981
File number 33-34222, as Exhibit 4(d)(v), Twenty-sixth, May 1, 1982
File number 33-34222, as Exhibit 4(d)(vi), Twenty-seventh, May 1, 1986
File number 33-00440, as Exhibit 4(c)(iv), Twenty-eighth, June 30, 1989
File number 33-34222, as Exhibit 4(d)(vii), Twenty-ninth, January 1, 1990
File number 33-65720, as Exhibit 4(d)(iii), Thirtieth, January 1, 1991
File number 33-65720, as Exhibit 4(d)(iv), Thirty-first, August 15, 1991

132

 
 
 
 
 
 
 
 
 
Exhibit
No.

Exhibit Description

Incorporated by Reference

Form

File No.

Exhibit
No.

Date

Included
Herewith

File number 33-65720, as Exhibit 4(d)(v), Thirty-second, March 15, 1992
File number 33-65720, as Exhibit 4(d)(vi), Thirty-third, April 1, 1993
File number 1-3198, Form 8-K, filed on 12/20/93, as Exhibit 4, Thirty-fourth, December 1, 1993
File number 1-3198, Form 8-K, filed on 11/21/00, as Exhibit 4, Thirty-fifth, November 1, 2000
File number 1-3198, Form 8-K, filed on 10/1/01, as Exhibit 4, Thirty-sixth, October 1, 2001
File number 1-3198, Form 8-K, filed on 4/16/03, as Exhibit 4, Thirty-seventh, April 1, 2003
File number 1-3198, Form 10-Q for the quarter ended June 30, 2003, filed on 8/7/03, as Exhibit 4(a)(iii), Thirty-eighth, May
15, 2003
File number 1-3198, Form 10-Q for the quarter ended September 30, 2003, filed on 11/6/03, as Exhibit 4(a)(iv), Thirty-
ninth, October 1, 2003
File number 1-3198, Form 8-K filed on 5/10/05, as Exhibit 4, Fortieth, May 1, 2005
File number 1-3198, Form 8-K filed on 10/10/06, as Exhibit 4, Forty-first, October 1, 2006
File number 1-3198, Form 8-K filed on 6/4/07, as Exhibit 4, Forty-second, May 1, 2007
File number 1-3198, Form 8-K filed on 9/26/07, as Exhibit 4, Forty-third, September 1, 2007
File number 1-3198, Form 8-K filed on 4/3/08, as Exhibit 4, Forty-fourth, April 1, 2008
File number 1-3198, Form 10-K filed on 2/23/10, as Exhibit 4.10, Forty-fifth, February 1, 2010
File number 1-3198, Form 8-K filed on 6/18/10, as Exhibit 4, Forty-sixth, June 1, 2010
File number 1-3198, Form 8-K filed on 7/12/2013, as Exhibit 4.1, Forty-seventh, July 1, 2013

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

10.1

10.2

10.3

10.4

10.5

Instruments relating to Idaho Power Company American Falls
bond guarantee (see Exhibit 10.23)
Agreement of Idaho Power Company to furnish certain debt
instruments
Agreement of IDACORP, Inc. to furnish certain debt
instruments
Agreement and Plan of Merger dated March 10, 1989, between
Idaho Power Company, a Maine corporation, and Idaho Power
Migrating Corporation

Indenture for Senior Debt Securities dated as of February 1,
2001, between IDACORP, Inc. and Deutsche Bank Trust
Company Americas (formerly known as Bankers Trust
Company), as trustee
First Supplemental Indenture dated as of February 1, 2001 to
Indenture for Senior Debt Securities dated as of February 1,
2001 between IDACORP, Inc. and Deutsche Bank Trust
Company Americas (formerly known as Bankers Trust
Company), as trustee
Indenture for Debt Securities dated as of August 1, 2001
between Idaho Power Company and Deutsche Bank Trust
Company Americas (formerly known as Bankers Trust
Company), as trustee
Idaho Power Company Instrument of Further Assurance
relating to Mortgage and Deed of Trust, dated as of August 3,
2010
Agreement, dated as of October 11, 1973, between Idaho
Power Company and Pacific Power & Light Company
Amended and Restated Agreement for the Operation of the Jim
Bridger Project, dated December 11, 2014, between Idaho
Power Company and PacifiCorp
Amended and Restated Agreement for the Ownership of the
Jim Bridger Project, dated December 11, 2014, between Idaho
Power Company and PacifiCorp
Joint Ownership and Operating Agreement, dated October 24,
2014, between Idaho Power Company and PacifiCorp

Letter Agreement, dated January 23, 1976, between Idaho
Power Company and Portland General Electric Company

10-Q

1-3198

4(b)

8/4/2000

S-3

33-65720

4(f)

7/7/1993

10-Q

1-14465

4(c)(ii)

11/6/2003

S-3 Post-
Effective
Amend.
No. 2
8-K

33-00440

2(a)(iii)

6/30/1989

1-14465

4.1

2/28/2001

8-K

1-14465

4.2

2/28/2001

S-3

333-67748

4.13

8/16/2001

10-Q

1-3198

4.12

8/5/2010

10-K

10-K

8-K

2-49584

5(c)

1-14465,
1-3198

1-14465,
1-3198

1-14465,
1-3198

2-56513

10.4

2/19/2015

10.5

2/19/2015

10.1

10/24/2014

5(i)

133

 
 
 
 
 
 
 
 
 
Exhibit
No.
10.6

10.7

10.8

10.9

10.10

10.11

10.12

10.13

10.14

10.15

10.16

10.17

10.18

10.19

10.20

10.21

10.22

Exhibit Description
Agreement for Construction, Ownership and Operation of the
Number One Boardman Station on Carty Reservoir, dated as
of October 15, 1976, between Portland General Electric
Company and Idaho Power Company
Amendment, dated September 30, 1977, relating to the
agreement filed as Exhibit 10.5
Amendment, dated October 31, 1977, relating to the agreement
filed as Exhibit 10.5
Amendment, dated January 23, 1978, relating to the agreement
filed as Exhibit 10.5
Amendment, dated February 15, 1978, relating to the
agreement filed as Exhibit 10.5
Amendment, dated September 1, 1979, relating to the
agreement filed as Exhibit 10.5
Participation Agreement, dated September 1, 1979, relating to
the sale and leaseback of coal handling facilities at the Number
One Boardman Station on Carty Reservoir
Agreements for the Operation, Construction and Ownership of
the North Valmy Power Plant Project, dated December 12,
1978, between Sierra Pacific Power Company and Idaho
Power Company
Framework Agreement, dated October 1, 1984, between the
State of Idaho and Idaho Power Company relating to Idaho
Power Company's Swan Falls and Snake River water rights
Agreement, dated October 25, 1984, between the State of
Idaho and Idaho Power Company, relating to the agreement
filed as Exhibit 10.14
Contract to Implement, dated October 25, 1984, between the
State of Idaho and Idaho Power Company, relating to the
agreement filed as Exhibit 10.14
Settlement Agreement, dated March 25, 2009, between the
State of Idaho and Idaho Power Company relating to the
agreement filed as Exhibit 10.14 
Agreement Regarding the Ownership, Construction, Operation
and Maintenance of the Milner Hydroelectric Project (FERC
No. 2899), dated January 22, 1990, between Idaho Power
Company and the Twin Falls Canal Company and the
Northside Canal Company Limited

Credit Agreement, dated November 6, 2015, among
IDACORP, Inc., Wells Fargo Bank, National Association, as
administrative agent, swingline lender, and LC issuer,
JPMorgan Chase Bank, N.A., as syndication agent and LC
issuer, KeyBank National Association and MUFG Union
Bank, N.A., as documentation agents and LC Issuers, and
Wells Fargo Securities, LLC, J.P. Morgan Securities LLC,
Keybanc Capital Markets Inc., and MUFG Union Bank, N.A.
as joint lead arrangers and joint book runners, and the other
lenders named therein
Credit Agreement, dated November 6, 2015, among Idaho
Power Company, Wells Fargo Bank, National Association, as
administrative agent, swingline lender, and LC issuer,
JPMorgan Chase Bank, N.A., as syndication agent and LC
issuer, KeyBank National Association and MUFG Union
Bank, N.A., as documentation agents and LC Issuers, and
Wells Fargo Securities, LLC, J.P. Morgan Securities LLC,
Keybanc Capital Markets, Inc., and MUFG Union Bank, N.A.
as joint lead arrangers and joint book runners, and the other
lenders named therein
Loan Agreement, dated October 1, 2006, between Sweetwater
County, Wyoming and Idaho Power Company
Guaranty Agreement, dated February 10, 1992, between Idaho
Power Company and New York Life Insurance Company, as
Note Purchaser, relating to $11,700,000 Guaranteed Notes due
2017 of Milner Dam Inc. 

134

Incorporated by Reference

Form
S-7

File No.
2-62034

Exhibit
No.
5(s)

Date
6/30/1978

Included
Herewith

S-7

S-7

S-7

S-7

S-7

S-7

2-62034

5(t)

6/30/1978

2-62034

5(u)

6/30/1978

2-62034

5(v)

6/30/1978

2-62034

5(w)

6/30/1978

2-68574

5(x)

7/23/1980

2-68574

5(z)

7/23/1980

S-7

2-64910

5(y)

6/29/1979

S-3

33-65720

10(h)

7/7/1993

S-3

33-65720

10(h)(i)

7/7/1993

S-3

33-65720

10(h)(ii)

7/7/1993

10-Q

1-14465

10.58

5/7/2009

S-3

33-65720

10(m)

7/7/1993

8-K

1-14465,
1-3198

10.1

11/9/2015

8-K

1-14465,
1-3198

10.2

11/9/2015

8-K

S-3

1-3198

10.1

10/10/2006

33-65720

10(m)(i)

7/7/1993

 
 
 
 
 
 
 
 
 
Exhibit
No.
10.23

10.24

10.251

10.261

10.271

10.281

10.291

10.301

10.311

10.321

10.331

10.341

10.351

10.361

10.371

10.381

10.391

10.401

10.411

10.421

10.431

10.441

Exhibit Description
Guaranty Agreement, dated April 11, 2000, between Idaho
Power Company and Bank One Trust Company, N.A., as
Trustee, relating to $19,885,000 American Falls Replacement
Dam Refinancing Bonds of the American Falls Reservoir
District, Idaho
Guaranty Agreement, dated as of August 30, 1974, between
Idaho Power Company and Pacific Power & Light Company
Idaho Power Company Security Plan for Senior Management
Employees I, amended and restated effective December 31,
2004, and as further amended November 20, 2008
Amendment, dated September 19, 2012, to the Idaho Power
Company Security Plan for Senior Management Employees I
Idaho Power Company Security Plan for Senior Management
Employees II, effective January 1, 2005, as amended and
restated November 30, 2011
Amendment, dated September 19, 2012, to the Idaho Power
Company Security Plan for Senior Management Employees II
Amendment, dated January 16, 2014, to the Idaho Power
Company Security Plan for Senior Management Employees II
IDACORP, Inc. Restricted Stock Plan, as amended and
restated September 20, 2007
IDACORP, Inc. Restricted Stock Plan - Form of Restricted
Stock Agreement (Time-Vesting) 
IDACORP, Inc. Restricted Stock Plan - Form of Performance
Stock Agreement (Performance Vesting)
Idaho Power Company Security Plan for Board of Directors - a
non-qualified deferred compensation plan, as amended and
restated effective July 20, 2006
IDACORP, Inc. Non-Employee Directors Stock Compensation
Plan, as amended November 19, 2015
Form of Officer Indemnification Agreement between
IDACORP, Inc. and Officers of IDACORP, Inc. and Idaho
Power Company, as amended July 20, 2006
Form of Director Indemnification Agreement between
IDACORP, Inc. and Directors of IDACORP, Inc., as amended
July 20, 2006
Form of Amended and Restated Change in Control Agreement
between IDACORP, Inc. and Officers of IDACORP and Idaho
Power Company (senior vice president and higher), approved
November 20, 2008
Form of Amended and Restated Change in Control Agreement
between IDACORP, Inc. and Officers of IDACORP and Idaho
Power Company (below senior vice president), approved
November 20, 2008
Form of Amended and Restated Change in Control Agreement
between IDACORP, Inc. and Officers of IDACORP, Inc. and
Idaho Power Company, approved March 17, 2010
IDACORP, Inc. and/or Idaho Power Company Executive
Officers with Amended and Restated Change in Control
Agreements chart, as of February 12, 2016
IDACORP, Inc. 2000 Long-Term Incentive and Compensation
Plan, as amended November 18, 2010
IDACORP, Inc. 2000 Long-Term Incentive and Compensation
Plan - Form of Restricted Stock Award Agreement (Time
Vesting)
IDACORP, Inc. 2000 Long-Term Incentive and Compensation
Plan - Form of Performance Share Award Agreement
(Performance with Two Goals)
IDACORP, Inc. 2000 Long-Term Incentive and Compensation
Plan - Form of Restricted Stock Award Agreement (Time
Vesting) (For 2014 and Prior Outstanding Awards)

135

Incorporated by Reference

Form
10-Q

File No.
1-3198

Exhibit
No.
10(c)

Date
8/4/2000

Included
Herewith

S-7

2-62034

5(r)

6/30/1978

10-K

10-Q

10-K

10-Q

10-K

10-Q

10-Q

10-Q

10-Q

10-Q

10-Q

10-K

10-K

1-14465,
1-3198

1-14465,
1-3198
1-14465,
1-3198

1-14465,
1-3198
1-14465,
1-3198
1-14465,
1-3198
1-14465,
1-3198
1-14465,
1-3198
1-14465,
1-3198

1-14465,
1-3198

1-14465,
1-3198

1-14465,
1-3198

1-14465,
1-3198

10.15

2/26/2009

10.62

11/1/2012

10.21

2/22/2012

10.63

11/1/2012

10.26

2/20/2014

10(h)(iii) 10/31/2007

10(h)(vi)

11/2/2006

10(h)
(vii)
10(h)
(viii)

10(h)
(xix)

10(h)
(xx)

11/2/2006

11/2/2006

11/2/2006

11/2/2006

10.24

2/26/2009

10.25

2/26/2009

8-K

1-14465,
1-3198

10.1

3/24/2010

10-K

10-K

10-K

10-Q

1-14465,
1-3198
1-14465,
1-3198

1-14465,
1-3198

10.33

2/23/2011

10.43

2/19/2015

10.44

2/19/2015

1-14465,
1-3198

10(h)
(xvii)

11/2/2006

X

X

 
 
 
 
 
 
 
 
 
Exhibit
No.
10.451

10.461

10.471

10.481

10.491

10.501

10.511

10.521

10.531

10.541

10.551

10.561

10.571

10.581

10.591

12.1

12.2

21.1

23.1
23.2
31.1
31.2
31.3
31.4
32.1
32.2
32.3
32.4
95.1

Exhibit Description
IDACORP, Inc. 2000 Long-Term Incentive and Compensation
Plan - Form of Performance Share Award Agreement
(Performance with Two Goals) (For 2014 and Prior
Outstanding Awards)

IDACORP, Inc. Executive Incentive Plan, as amended and
restated January 16, 2014 (superseded by Exhibit 10.47
effective February 10, 2016)

IDACORP, Inc. Executive Incentive Plan, as amended and
restated February 11, 2016

Idaho Power Company Executive Deferred Compensation
Plan, effective November 15, 2000, as amended November 20,
2008
IDACORP, Inc. and Idaho Power Company Compensation for
Non-Employee Directors of the Board of Directors, effective
January 1, 2015 (superseded by Exhibit 10.50 effective
January 1, 2016)

IDACORP, Inc. and Idaho Power Company Compensation for
Non-Employee Directors of the Board of Directors, effective
January 1, 2016

Form of IDACORP, Inc. Director Deferred Compensation
Agreement, as amended November 20, 2008
Form of Letter Agreement to Amend Outstanding IDACORP,
Inc. Director Deferred Compensation Agreement (November
16, 2008)
Form of Amendment to IDACORP, Inc. Director Deferred
Compensation Agreement, as amended November 20, 2008
Form of Termination of IDACORP, Inc. Director Deferred
Compensation Agreement, as amended November 20, 2008
Form of Idaho Power Company Director Deferred
Compensation Agreement, as amended November 20, 2008
Form of Letter Agreement to Amend Outstanding Idaho Power
Company Director Deferred Compensation Agreement
(November 16, 2008)
Form of Amendment to Idaho Power Company Director
Deferred Compensation Agreement, as amended November
20, 2008
Form of Termination of Idaho Power Company Director
Deferred Compensation Agreement, as amended November
20, 2008
Idaho Power Company Restated Employee Savings Plan, as
restated as of January 1, 2016
IDACORP, Inc. Computation of Ratio of Earnings to Fixed
Charges and Supplemental Ratio of Earnings to Fixed Charges
Idaho Power Company Computation of Ratio of Earnings to
Fixed Charges and Supplemental Ratio of Earnings to Fixed
Charges
Subsidiaries of IDACORP, Inc.

Consent of Registered Independent Accounting Firm
Consent of Registered Independent Accounting Firm
IDACORP, Inc. Rule 13a-14(a) CEO certification
IDACORP, Inc. Rule 13a-14(a) CFO certification
Idaho Power Rule 13a-14(a) CEO certification
Idaho Power Rule 13a-14(a) CFO certification
IDACORP, Inc. Section 1350 CEO certification
IDACORP, Inc. Section 1350 CFO certification
Idaho Power Section 1350 CEO certification
Idaho Power Section 1350 CFO certification
Mine Safety Disclosures

136

Incorporated by Reference

Form
10-Q

File No.
1-14465,
1-3198

Exhibit
No.
10.69

Date
5/5/2011

Included
Herewith

10-K

1-14465,
1-3198

10.42

2/20/2014

10-K

10-K

10-K

10-K

10-K

10-K

10-K

10-K

10-K

10-K

1-14465,
1-3198

1-14465,
1-3198

10.32

2/26/2009

10.49

2/19/2015

1-14465,
1-3198
1-14465,
1-3198

1-14465,
1-3198
1-14465,
1-3198
1-14465,
1-3198
1-14465,
1-3198

1-14465,
1-3198

1-14465,
1-3198

10.46

2/26/2009

10.47

2/26/2009

10.48

2/26/2009

10.49

2/26/2009

10.50

2/26/2009

10.51

2/26/2009

10.52

2/26/2009

10.53

2/26/2009

10-K

1-14465,
1-3198

21.1

2/21/2013

X

X

X

X

X

X
X
X
X
X
X
X
X
X
X
X

 
 
 
 
 
 
 
 
 
Exhibit
No.

Exhibit Description

101.INS XBRL Instance Document
101.SCH XBRL Taxonomy Extension Schema Document
101.CAL XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB XBRL Taxonomy Extension Label Linkbase Document
101.PRE XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF XBRL Taxonomy Extension Definition Linkbase Document

1   Management contract or compensatory plan or arrangement

Incorporated by Reference

Form

File No.

Exhibit
No.

Date

Included
Herewith
X
X
X
X
X
X

137

 
 
 
 
 
 
 
 
 
 
 
IDACORP, INC.
SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME

Income:
Equity in income of subsidiaries
Investment income
Total income
Expenses:
Operating expenses
Interest expense
Other expenses
Total expenses
Income from Before Income Taxes
Income Tax Benefit
Net Income Attributable to IDACORP, Inc.
Other comprehensive (income) loss
Comprehensive Income Attributable to IDACORP, Inc.

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

$

$

$

194,426
1
194,427

$

193,707
—
193,707

182,463
3
182,466

831
276
45
1,152
193,275
(1,404)
194,679
2,882
197,561

$

1,376
261
45
1,682
192,025
(1,455)
193,480
(7,605)
185,875

$

940
416
71
1,427
181,039
(1,378)
182,417
563
182,980

The accompanying note is an integral part of these statements.

IDACORP, INC.
CONDENSED STATEMENTS OF CASH FLOWS

Operating Activities:
Net cash provided by operating activities
Investing Activities:
Distributions from (contributions to) subsidiaries
Net cash provided by (used in) investing activities
Financing Activities:
Issuance of common stock
Dividends on common stock
(Decrease) increase in short-term borrowings
Change in intercompany notes payable
Other
Net cash used in financing activities
Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year

2015

Year Ended December 31,
2014
(thousands of dollars)

2013

$

100,465

$

109,289

$

96,391

—
—

—
—

—
(96,810)
(11,300)
5,572
(1,675)
(104,213)
(3,748)
5,776
2,028

$

195
(88,489)
(23,450)
(198)
(469)
(112,411)
(3,122)
8,898
5,776

$

$

2,282
2,282

255
(78,832)
(14,950)
647
(431)
(93,311)
5,362
3,536
8,898

The accompanying note is an integral part of these statements.

138

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IDACORP, INC.
CONDENSED BALANCE SHEETS

Assets

Current Assets:
Cash and cash equivalents
Receivables
Income taxes receivable
Deferred income taxes
Other

Total current assets

Investment in subsidiaries

Other Assets:
Deferred income taxes
Other

Total other assets

Total assets

Liabilities and Shareholders’ Equity
Current Liabilities:
Notes payable
Accounts payable
Taxes accrued
Other

Total current liabilities

Other Liabilities:
Intercompany notes payable
Other

Total other liabilities

IDACORP, Inc. Shareholders’ Equity

Total Liabilities and Shareholders' Equity

December 31,

2015
2014
(thousands of dollars)

$

$

2,028
946
7,241
—
119
10,334

5,776
1,702
—
42,766
106
50,350

2,007,984

1,910,084

76,410
402
76,812

44,546
287
44,833

$

2,095,130

$ 2,005,267

$

$

20,000
13
—
765
20,778

31,300
8
8,950
854
41,112

15,292
1,175
16,467
2,057,885

9,658
1,296
10,954
1,953,201

$

2,095,130

$ 2,005,267

The accompanying note is an integral part of these statements.

NOTE TO CONDENSED FINANCIAL STATEMENTS

1.  BASIS OF PRESENTATION

Pursuant to rules and regulations of the Securities and Exchange Commission, the unconsolidated condensed financial 
statements of IDACORP, Inc. do not reflect all of the information and notes normally included with financial statements 
prepared in accordance with accounting principles generally accepted in the United States of America.  Therefore, these 
financial statements should be read in conjunction with the consolidated financial statements and related notes included in the 
2015 Form 10-K, Part II, Item 8.

Accounting for Subsidiaries:  IDACORP has accounted for the earnings of its subsidiaries under the equity method of 
accounting in these unconsolidated condensed financial statements.  Included in net cash provided by operating activities in the 
condensed statements of cash flows are dividends that IDACORP subsidiaries paid to IDACORP of $99 million in 2015 and 
$91 million in 2014 and 2013.

139

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IDACORP, INC.
SCHEDULE II - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
Years Ended December 31, 2015, 2014, and 2013 

Column A

Column B

Column C
Additions

Column D

Column E

Classification

2015:
Reserves deducted from applicable assets

Reserve for uncollectible accounts
Reserve for uncollectible notes

Other Reserves:

Injuries and damages

2014:
Reserves deducted from applicable assets

Reserve for uncollectible accounts
Reserve for uncollectible notes

Other Reserves:
Rate refunds
Injuries and damages

2013:
Reserves deducted from applicable assets

Reserve for uncollectible accounts
Reserve for uncollectible notes

Balance at
Beginning
of Year

Charged
to
Income

Charged
(Credited)
to Other
Accounts

Deductions(1)

Balance at
End
of Year

(thousands of dollars)

$

$

$

$

2,104
552

$

3,327
—

$

819
—

$

4,895
—

1,995

890

—

1,011

$

2,502
885

$

6,756
(333)

$

198
—

$

7,352
—

398
1,671

(398)
461

—
—

—
137

$

1,873
1,260

$

5,777
(375)

(38) $
—

$

5,110
—

1,355
552

1,874

2,104
552

—
1,995

2,502
885

Other Reserves:
Rate refunds
Injuries and damages

398
1,671
(1) Represents deductions from the reserves for purposes for which the reserves were created.  In the case of uncollectible accounts, and notes reserves, includes 
reversals of amounts previously written off.

—
5,480

—
4,722

398
913

—
—

140

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IDAHO POWER COMPANY
SCHEDULE II - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
Years Ended December 31, 2015, 2014, and 2013 

Column A

Column B

Column C
Additions

Column D

Column E

Classification

2015:
Reserves deducted from applicable assets

Balance at
Beginning
of Year

Charged
to
Income

Charged
(Credited)
to Other
Accounts

Deductions(1)

Balance at
End
of Year

(thousands of dollars)

Reserve for uncollectible accounts

$

2,104

$

3,327

$

819

$

4,895

$

1,355

Other Reserves:

Injuries and damages

2014:
Reserves deducted from applicable assets

1,995

890

—

1,011

1,874

Reserve for uncollectible accounts

$

2,502

$

6,756

$

198

$

7,352

$

2,104

Other Reserves:
Rate refunds
Injuries and damages

2013:
Reserves deducted from applicable assets

398
1,671

(398)
461

—
—

—
137

—
1,995

Reserve for uncollectible accounts

$

1,873

$

5,777

$

(38) $

5,110

$

2,502

Other Reserves:
Rate refunds
Injuries and damages

—
5,480

398
913

—
—

—
4,722

398
1,671

(1) Represents deductions from the reserves for purposes for which the reserves were created.  In the case of uncollectible accounts, includes reversals of 
amounts previously written off.

141

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 and 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.

SIGNATURES

February 18, 2016
Date

IDACORP, INC.

By:

/s/ Darrel T. Anderson

Darrel T. Anderson
President and Chief Executive Officer

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 dates indicated.

Signature

/s/ Robert A. Tinstman
Robert A. Tinstman

/s/ Darrel T. Anderson
Darrel T. Anderson
President and Chief Executive Officer and
Director

/s/ Steven R. Keen
Steven R. Keen
Senior Vice President, Chief Financial
Officer, and Treasurer

/s/ Kenneth W. Petersen
Kenneth W. Petersen
Vice President, Controller, and Chief
Accounting Officer

/s/ Thomas Carlile
Thomas Carlile

/s/ Richard J. Dahl
Richard J. Dahl

/s/ Ronald W. Jibson
Ronald W. Jibson

/s/ Judith A. Johansen
Judith A. Johansen

/s/ Dennis L. Johnson
Dennis L. Johnson

/s/ J. LaMont Keen
J. LaMont Keen

/s/ Christine King
Christine King

/s/ Richard J. Navarro
Richard J. Navarro

Title

Date

Chairman of the Board

February 18, 2016

(Principal Executive Officer)

February 18, 2016

(Principal Financial Officer)

February 18, 2016

(Principal Accounting Officer)

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

Director

Director

Director

Director

Director

Director

Director

Director

142

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 and 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.

SIGNATURES

February 18, 2016
Date

Idaho Power Company

By:

/s/ Darrel T. Anderson

Darrel T. Anderson
President and Chief Executive Officer

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 dates indicated.

Signature

/s/ Robert A. Tinstman
Robert A. Tinstman

/s/ Darrel T. Anderson
Darrel T. Anderson
President and Chief Executive Officer and
Director

/s/ Steven R. Keen
Steven R. Keen
Senior Vice President, Chief Financial
Officer, and Treasurer

/s/ Kenneth W. Petersen
Kenneth W. Petersen
Vice President, Controller, and Chief
Accounting Officer

/s/ Thomas Carlile
Thomas Carlile

/s/ Richard J. Dahl
Richard J. Dahl

/s/ Ronald W. Jibson
Ronald W. Jibson

/s/ Judith A. Johansen
Judith A. Johansen

/s/ Dennis L. Johnson
Dennis L. Johnson

/s/ J. LaMont Keen
J. LaMont Keen

/s/ Christine King
Christine King

/s/ Richard J. Navarro
Richard J. Navarro

Title

Date

Chairman of the Board

February 18, 2016

(Principal Executive Officer)

February 18, 2016

(Principal Financial Officer)

February 18, 2016

(Principal Accounting Officer)

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

February 18, 2016

Director

Director

Director

Director

Director

Director

Director

Director

143

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit No. Description

EXHIBIT INDEX

10.34(1)
10.40(1)

10.47(1)
10.50(1)

10.59(1)
12.1

12.2

23.1

23.2

31.1

31.2

31.3

31.4

32.1

32.2

32.3

32.4

95.1

101.INS

101.SCH

101.CAL

101.LAB

101.PRE

101.DEF

IDACORP, Inc. Non-Employee Directors Stock Compensation Plan, as amended November 19, 2015

IDACORP, Inc. and/or Idaho Power Company Executive Officers with Amended and Restated Change in
Control Agreements chart, as of February 12, 2016
IDACORP, Inc. Executive Incentive Plan, as amended and restated February 11, 2016

IDACORP, Inc. and Idaho Power Company Compensation for Non-Employee Directors of the Board of
Directors, effective January 1, 2016
Idaho Power Company Restated Employee Savings Plan, as restated as of January 1, 2016

IDACORP, Inc. Computation of Ratio of Earnings to Fixed Charges and Supplemental Ratio of Earnings to
Fixed Charges

Idaho Power Company Computation of Ratio of Earnings to Fixed Charges and Supplemental Ratio of Earnings
to Fixed Charges

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm

IDACORP, Inc. Rule 13a-14(a) CEO certification

IDACORP, Inc. Rule 13a-14(a) CFO certification

Idaho Power Rule 13a-14(a) CEO certification

Idaho Power Rule 13a-14(a) CFO certification

IDACORP, Inc. Section 1350 CEO certification

IDACORP, Inc. Section 1350 CFO certification

Idaho Power Section 1350 CEO certification

Idaho Power Section 1350 CFO certification

Mine safety disclosures

XBRL Instance Document

XBRL Taxonomy Extension Schema Document

XBRL Taxonomy Extension Calculation Linkbase Document

XBRL Taxonomy Extension Label Linkbase Document

XBRL Taxonomy Extension Presentation Linkbase Document

XBRL Taxonomy Extension Definition Linkbase Document

(1) Management contract or compensatory plan or arrangement.

144

 
 
 
 
 
 
 
 
 
For your reference

Dividend Payment Dates 
IDACORP, Inc. Common Stock dividends are paid 
quarterly on or about the 28th of February, and 
the 30th of May, August and November.

Transfer Agent/Registrar
For IDACORP, Inc. Common Stock 
Wells Fargo Shareowner Services 
1110 Centre Pointe Curve, Suite 101
Mendota Heights, MN 55120
1-800-565-7890

Common Stock Information
Ticker symbol: IDA
Listed: New York Stock Exchange, 11 Wall St.
New York, NY 10005

Contact
Broker/Analyst Contact: Lawrence F. Spencer
Director of Investor Relations 
Phone: 208-388-2664   Fax: 208-333-2372 
Email: lspencer@idacorpinc.com

Shareowner Contact: Colette Shepard 
Phone: 1-800-635-5406   Fax: 208-388-6955 
Email: cshepard@idacorpinc.com 

Corporate Headquarters
Mailing: P.O. Box 70, Boise, ID 83707-0070
Street: 1221 W. Idaho St. 
Boise, Idaho 83702-5627 
Phone: 208-388-2200
Website: idacorpinc.com

SEC Form 10-K
The IDACORP, Inc. and Idaho Power Company 
combined Form 10-K has been fi led with the 
Securities and Exchange Commission. The Form 
10-K and this Annual Report to Shareholders also 
are available on our website at idacorpinc.com. 
This report is prepared for the information of 
shareholders of the company and is not to 
be used by others in connection with any 
sale, offer for sale or solicitation of any 
offer to buy any securities.

2016 Annual Meeting
The 2016 Annual Meeting of Shareholders will 
be held at Idaho Power’s Corporate Headquarters, 
1221 W. Idaho St., Boise, Idaho at 10 a.m. local 
time on Thursday, May 19, 2016. Formal notice 
of the meeting will be mailed to shareholders 
on or about Friday, April 1, 2016.

IDACORP, Inc.—Boise, Idaho-based and formed in 
1998—is a holding company comprised of Idaho 
Power Company, a regulated electric utility; IDACORP 
Financial, a holder of affordable housing projects and 
other real estate investments; and Ida-West Energy, an 
operator of small hydroelectric generation projects that 
satisfy the requirements of the Public Utility Regulatory 
Policies Act of 1978. IDACORP’s origins lie with Idaho 
Power and operations beginning in 1916. Today, Idaho 
Power employs approximately 2,000 people to serve a 
24,000-square-mile service area in southern Idaho and 
eastern Oregon. With 17 low-cost hydroelectric projects 
as the core of its generation portfolio, Idaho Power’s 
nearly 525,000 residential, business and agricultural 
customers pay some of the nation’s lowest prices for 
electricity. To learn more about Idaho Power or IDACORP, 
Inc., visit idahopower.com or idacorpinc.com.

Forward-Looking Statements: Please refer to IDACORP’s 
and Idaho Power’s Form 10-K for a description of the 
risks and uncertainties related to the forward-looking 
statements included in this Annual Report.

ildi n
ildi n

u
u
B
B

g  the F
g  the F

Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S
Y E A R S

u
u

t
t

u
u

r
r
e
e

2

0

1

5

I

D

A

C

O

R

P

A

N

N

U

A

L

R

E

P

O

R

T

P o w e r ing Generations
P o w e r ing Generations

2016
2016

6
6

1
1

9
9

1
1

P.O. Box 70
Boise, ID  83707-0070

idacorpinc.com