Revenue (Tables)

3 Months Ended

Mar. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Utilities Operating Revenue Expense Taxes

Utility-related taxes included in revenue from contracts with customers were as follows for the three months ended March 31 (dollars in millions):

	2025		2024
Utility-related taxes	$	27	$	27

Disaggregation of Revenue

Disaggregation of Total Operating Revenue

The following table disaggregates total operating revenue by segment and source for the three months ended March 31 (dollars in millions):

	2025			2024
Avista Utilities
Revenue from contracts with customers	$	526		$	499
Derivative revenues		61			90
Alternative revenue programs		(8	)		3
Other utility revenues		25			3
Total Avista Utilities		604			595
AEL&P
Revenue from contracts with customers		13			14
Total operating revenues	$	617		$	609

Utility Revenue from Contracts with Customers by Type and Service

The following table disaggregates revenue from contracts with customers associated with the Company's electric operations for the three months ended March 31 (dollars in millions):

	2025						2024
	Avista Utilities		AEL&P		Total Utility		Avista Utilities		AEL&P		Total Utility
Three months ended March 31:
ELECTRIC OPERATIONS
Revenue from contracts with customers
Residential	$	165	$	7	$	172	$	142	$	7	$	149
Commercial		103		6		109		93		7		100
Industrial		35		—		35		28		—		28
Public street and highway lighting		2		—		2		2		—		2
Total retail revenue		305		13		318		265		14		279
Transmission		9		—		9		10		—		10
Other revenue from contracts with    customers		8		—		8		16		—		16
Total electric revenue from contracts    with customers	$	322	$	13	$	335	$	291	$	14	$	305

The following table disaggregates revenue from contracts with customers associated with the Company's natural gas operations for the three months ended March 31 (dollars in millions):

	2025		2024
	Avista Utilities		Avista Utilities
NATURAL GAS OPERATIONS
Revenue from contracts with customers
Residential	$	129	$	133
Commercial		65		68
Industrial and interruptible		4		4
Total retail revenue		198		205
Transportation		5		2
Other revenue from contracts with customers		1		1
Total natural gas revenue from contracts with customers	$	204	$	208