Natural gas power plants in Idaho

9 operating natural gas power plants in Idaho with 1,227 MW of natural gas capacity, largest first. From EIA-860M, August 2026.

Plants

Natural gas capacity

1,227 MW

Net generation, 2025

6.30 TWh

8 of 9 plants reported

Largest

Langley Gulch Power Plant

319 MW

Largest natural gas power plants in Idaho

#	Plant	Natural gas MW	2025 net generation, GWhGWh, 2025	Capacity factor	Operator
1	Langley Gulch Power PlantPayette County	319	1,755	62.9%	Idaho Power Co
2	Rathdrum Power LLCKootenai County	302	1,715	64.9%	Rathdrum Power LLC
3	Evander Andrews Power ComplexElmore County	225	926	39.0%	Idaho Power Co
4	Bennett MountainElmore County	173	999	66.0%	Idaho Power Co
5	RathdrumKootenai County	166	793	54.4%	Avista Corp
6	IFP Peaking PlantBonneville County	18	–	–	City of Idaho Falls - (ID)
7	Amalgamated Sugar Twin FallsTwin Falls County	11	20.6	–	The Amalgamated Sugar Co
8	Amalgamated Sugar LLC NampaCanyon County	8.2	46.8	65.1%	Amalgamated Sugar Co-Nampa
9	BYUI Central Energy FacilityMadison County	5.6	39.6	80.7%	Brigham Young Univ Idaho

Projects where natural gas is the largest fuel or at least a fifth of nameplate capacity. MW is natural gas nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources

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All plants in Idaho Largest natural gas power plants in the US