Twin Falls (ID)

OperatingHydro

Ranked #11 of 76 Hydro plants in ID#289 of 1452 nationally

52.7 MW Hydro operating in Twin Falls, ID — Idaho Power Company

EIAGEMWD

52.7 MW

Nameplate Capacity

Generators

units

Conventional Hydroelectric

Technology

1935

Operating Since

Location

Coordinates

42.5892, -114.3564

County

Twin Falls, ID

Nearby Plants

Shoshone Falls
Hydro14.7 MW · 4.0 km
Clif Bar Bakery of Twin Falls
Solar1.6 MW · 7.2 km
Amalgamated Sugar Twin Falls
Natural Gas10.2 MW · 8.9 km

Status

Latest milestonegrand opening · 2024-12-04Local News 8 · 2025-12-04

Ownership & Operator

Field	EIA	GEM	Wikidata
Operator	Idaho Power Co	Idaho Power	—
Owner(s)	Idaho Power Co	IDACORP	—
Status	Operating	operating	—

Ownership Chain

DeveloperIdaho Falls Power±Local News 8 · 2025-12-04

PartnerIdaho Falls PowerIdaho National Laboratory (.gov) · 2025-08-28

ApplicantIdaho Power Co.Capital Press · 2025-10-09

CompanyIdaho National LaboratoryIdaho National Laboratory (.gov) · 2025-08-28

About

The Twin Falls hydroelectric plant is located in Twin Falls County, Idaho. It has a total capacity of 52.7 MW across two generators and began operating in 1935. The plant is owned by IDACORP and operated by Idaho Power Co. Its primary fuel source is water, utilizing conventional hydroelectric technology. The plant operates within the Idaho Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.

In the latest year of reported generation, the Twin Falls plant produced 100,984 MWh, achieving a capacity factor of 21.8%. The plant's installed cost was $912.79 per kW. Twin Falls ranks as the 11th largest power plant in Idaho out of 76, and 293rd nationally out of 1464 plants. Financial data for the plant is sourced from FERC filings.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Wikidata Global Energy Monitor

Engineering & Generators

EPC contractorEngineered Structures, Inc.Local News 8 · 2025-12-04