52.7 MW Hydro operating in Twin Falls, ID — Idaho Power Company
52.7 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1935
Operating Since
Coordinates
42.5892, -114.3564
County
Twin Falls, ID
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Operating | operating | — |
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
NERC Region
WECC
Balancing Authority
Idaho Power Company
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
3.0K MWh
Latest Month
101.0K MWh
Annual Generation
21.8%
Capacity Factor
$931/kW
Installed Cost
$24.6/MWh
Operating Cost
Idaho Power Company
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
LMP Node
TFPR_1_TOT_GEN-APND
Pricing Hub
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Last updated 2026-03-26
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