Energy Purchase Contracts (Tables)

12 Months Ended

Dec. 31, 2023

Energy Purchase Contracts [Line Items]

Schedule of Utility Total Expenses

Total expenses for power purchased, natural gas purchased, fuel for generation and other fuel costs, which are included in utility resource costs in the Consolidated Statements of Income, were as follows for the years ended December 31 (dollars in thousands):

	2023		2022		2021
Utility power resources	$	607,155	$	660,967	$	431,199

Future Contractual Commitments for Power Resources and Natural Gas Resources

The following table details Avista Utilities’ future contractual commitments for power resources (including transmission contracts) and natural gas resources (including transportation contracts) (dollars in thousands):

	2024		2025		2026		2027		2028		Thereafter		Total
Power resources	$	336,766	$	293,389	$	266,251	$	235,751	$	234,756	$	2,245,762	$	3,612,675
Natural gas resources		122,241		81,141		46,033		41,708		41,168		280,562		612,853
Total	$	459,007	$	374,530	$	312,284	$	277,459	$	275,924	$	2,526,324	$	4,225,528

Contractual Obligations [Member]

Energy Purchase Contracts [Line Items]

Future Contractual Commitments for Power Resources and Natural Gas Resources

The following table details future contractual commitments under these agreements (dollars in thousands):

	2024		2025		2026		2027		2028		Thereafter		Total
Contractual obligations	$	39,156	$	40,226	$	18,630	$	19,085	$	9,390	$	177,553	$	304,040