PROPERTY, PLANT AND EQUIPMENT AND JOINTLY-OWNED PROJECTS:

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

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 ended December 31, 2020 and 2019 (in thousands of dollars):

	2020				2019
	Balance		Avg Rate		Balance		Avg Rate
Production	$	2,529,708	3.23	%	$	2,535,938	3.19	%
Transmission	1,272,360		1.88	%	1,220,703		1.89	%
Distribution	1,968,752		2.26	%	1,882,136		2.25	%
General and Other	512,970		6.17	%	474,790		6.17	%
Total in service	6,283,790		2.88	%	6,113,567		2.87	%
Accumulated provision for depreciation	(2,193,831)				(2,155,783)
In service - net	$	4,089,959			$	3,957,784

At December 31, 2020, Idaho Power's construction work in progress balance of $597.2 million included relicensing costs of $356.9 million for the HCC, Idaho Power's largest hydropower complex. In 2020, 2019, and 2018, Idaho Power had IPUC authorization to include in its Idaho jurisdiction rates $6.5 million annually ($8.8 million when grossed-up for the effect of income taxes) of AFUDC relating to the HCC relicensing project. Collecting these amounts will reduce the amount collected in the future once the HCC relicensing costs are approved for recovery in base rates. At December 31, 2020, Idaho Power's regulatory liability for collection of AFUDC relating to the HCC was $169.1 million.

Idaho Power's ownership interest in two 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, 2020 (in thousands of dollars): 

Name of Plant	Location	Utility Plant in Service		Construction Work in Progress		Accumulated Provision for Depreciation		Ownership %	MW(1)(2)
Jim Bridger units 1-4	Rock Springs, WY	$	749,735	$	8,062	$	376,232	33	771
North Valmy unit 2(2)	Winnemucca, NV	253,409		347		180,669		50	145

(1) Idaho Power’s share of nameplate capacity.

(2) Pursuant to an agreement with NV Energy, Idaho Power's participation in coal-fired operations of North Valmy ended in December 2019 at unit 1 and is planned to end no later than the end of 2025 at unit 2.

In October 2020, Idaho Power and co-owner Portland General Electric ceased coal-fired operations at their Boardman power plant consistent with Idaho Power's continued path away from coal-fired generation. All depreciable property, plant and

equipment associated with Idaho Power's ownership in the Boardman power plant was fully depreciated as of December 31, 2020.

IERCo, Idaho Power’s wholly-owned subsidiary, is a joint venturer in BCC. Idaho Power’s coal purchases from the joint venture were $68.3 million in 2020, $73.6 million in 2019, and $81.8 million in 2018.

Idaho Power has contracts to purchase the energy from four PURPA qualifying facilities that are 50 percent owned by Ida-West. Idaho Power’s power purchases from these facilities were $9.3 million in 2020, $8.6 million in 2019, and $9.7 million in 2018.

IDACORP's consolidated VIE, Marysville, owns a hydropower plant with a net book value of $14.2 million and $14.7 million at December 31, 2020 and 2019, respectively.