Jointly Owned Utility Facilities (Tables)

12 Months Ended

Dec. 31, 2024

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent the Company's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

					Accumulated		Construction
	Company		Facility In		Depreciation and		Work-in-
	Share		Service		Amortization		Progress
PacifiCorp:
Jim Bridger Nos. 1-4	67	%	1,564		991		4
Hunter No. 1	94	%	509		256		3
Hunter No. 2	60	%	315		161		1
Wyodak	80	%	492		301		—
Colstrip Nos. 3 and 4	10	%	263		217		2
Hermiston	50	%	191		115		6
Craig Nos. 1 and 2	19	%	373		352		—
Hayden No. 1	25	%	77		58		—
Hayden No. 2	13	%	45		34		—
Transmission and distribution facilities	Various		932		296		308
Total PacifiCorp			4,761		2,781		324
MidAmerican Energy:
Louisa No. 1	88	%	988		559		7
Quad Cities Nos. 1 and 2(1)	25	%	747		501		13
Walter Scott, Jr. No. 3	79	%	1,033		679		10
Walter Scott, Jr. No. 4(2)	60	%	177		124		12
George Neal No. 4	41	%	337		199		5
Ottumwa No. 1(2)	52	%	402		306		16
George Neal No. 3	72	%	598		368		13
Transmission facilities	Various		276		103		4
Total MidAmerican Energy			4,558		2,839		80
NV Energy:
Valmy Nos. 1 and 2	50	%	412		372		13
ON Line Transmission Line	25	%	161		41		1
Other transmission facilities	Various		63		31		33
Total NV Energy			636		444		47
BHE Pipeline Group:
Ellisburg Pool	39	%	33		13		1
Ellisburg Station	50	%	29		9		5
Harrison	50	%	55		20		3
Leidy	50	%	148		51		4
Oakford	50	%	213		75		1
Common facilities	Various		275		183		—
Total BHE Pipeline Group			753		351		14
Total			$	10,708	$	6,415	$	465

(1)Includes amounts related to nuclear fuel.

(2)Facility in-service and accumulated depreciation and amortization amounts are net of credits applied under Iowa regulatory arrangements totaling $953 million and $218 million, respectively.

PAC

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent PacifiCorp's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

			Facility		Accumulated		Construction
	PacifiCorp		in		Depreciation and		Work-in-
	Share		Service		Amortization		Progress
Jim Bridger Nos. 1-4	67	%	$	1,564	$	991	$	4
Hunter No. 1	94		509		256		3
Hunter No. 2	60		315		161		1
Wyodak	80		492		301		—
Colstrip Nos. 3 and 4	10		263		217		2
Hermiston	50		191		115		6
Craig Nos. 1 and 2	19		373		352		—
Hayden No. 1	25		77		58		—
Hayden No. 2	13		45		34		—
Transmission and distribution facilities	Various		932		296		308
Total			$	4,761	$	2,781	$	324

MEC

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent MidAmerican Energy's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

					Accumulated		Construction
	Company		Plant in		Depreciation and		Work-in-
	Share		Service		Amortization		Progress
Louisa No. 1	88	%	$	988	$	559	$	7
Quad Cities Nos. 1 and 2(1)	25		747		501		13
Walter Scott, Jr. No. 3	79		1,033		679		10
Walter Scott, Jr. No. 4(2)	60		177		124		12
George Neal No. 4	41		337		199		5
Ottumwa No. 1(2)	52		402		306		16
George Neal No. 3	72		598		368		13
Transmission facilities	Various		276		103		4
Total			$	4,558	$	2,839	$	80

(1)Includes amounts related to nuclear fuel.

(2)Plant in-service and accumulated depreciation and amortization amounts are net of credits applied under Iowa regulatory arrangements totaling $953 million and $218 million, respectively.

NPC

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent Nevada Power's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

	Nevada					Construction
	Power's	Utility		Accumulated		Work-in-
	Share	Plant		Depreciation		Progress
ON Line Transmission Line	19	121		31		1
Other transmission facilities	Various	59		29		1
Total		$	180	$	60	$	2

SPPC

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent Sierra Pacific's share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

	Sierra						Construction
	Pacific's		Utility		Accumulated		Work-in-
	Share		Plant		Depreciation		Progress
Valmy Nos. 1 and 2	50	%	$	412	$	372	$	13
ON Line Transmission Line	6		40		10		—
Valmy Transmission	50		4		2		32
Total			$	456	$	384	$	45

EEGH

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent Eastern Energy Gas' share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

					Accumulated		Construction
	Eastern Energy Gas'		Facility in		Depreciation and		Work-in-
	Share		Service		Amortization		Progress
Ellisburg Pool	39	%	$	33	$	13	$	1
Ellisburg Station	50		29		9		5
Harrison	50		55		20		3
Leidy	50		148		51		4
Oakford	50		213		75		1
Total			$	478	$	168	$	14

EGTS

Jointly Owned Utility Plant Interests [Line Items]

Schedule of Jointly Owned Utility Facilities

The amounts shown in the table below represent EGTS' share in each jointly owned facility included in property, plant and equipment, net as of December 31, 2024 (dollars in millions):

					Accumulated		Construction
	EGTS'		Facility in		Depreciation and		Work-in-
	Share		Service		Amortization		Progress
Ellisburg Pool	39	%	$	33	$	13	$	1
Ellisburg Station	50		29		9		5
Harrison	50		55		20		3
Leidy	50		148		51		4
Oakford	50		213		75		1
Total			$	478	$	168	$	14