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52.7 MW Hydro operating in Twin Falls, ID
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
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| 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
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Idaho Power Company (IPCO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
3.0K MWh
Latest Month
101.0K MWh
Annual Generation
21.8%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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Run-of-river hydro · Idaho Power Company · Data from 2015–2024
$931/kW
Installed Cost
$24.6/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Market Position
LMP Node
TFPR_1_TOT_GEN-APND
Pricing Hub
—
175 buyers • 333 active contracts
+ 170 more offtakers in the full bridge. Top 5 shown.
Browse source data on FERC EQRLast updated 2026-03-26
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