Twin Falls (ID) — Plant Summary
- EIA Plant ID
- 821
- Capacity
- 52.7 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Twin Falls, ID
- Operating Since
- 1935
- Generators
- 2
- Operator
- Idaho Power Co
- Parent Company
- IDACORP
- Annual Generation
- 100,984 MWh
- Capacity Factor
- 21.8%
- Balancing Authority
- Idaho Power Company
- ISO/RTO
- —
- NERC Region
- WECC
Twin Falls (ID)
OperatingHydro
Ranked #11 of 76 Hydro plants in ID#289 of 1454 nationally
52.7 MW Hydro operating in Twin Falls, ID — Idaho Power Company
EIAGEMWD
52.7 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1935
Operating Since
Location
Coordinates
42.5892, -114.3564
County
Twin Falls, ID
Nearby Plants
- Shoshone FallsHydro14.7 MW · 4.0 km
- Clif Bar Bakery of Twin FallsSolar1.6 MW · 7.2 km
- Amalgamated Sugar Twin FallsNatural Gas10.2 MW · 8.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Operating | operating | — |
Ownership Chain
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Idaho Power Company
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
3.0K MWh
Latest Month
101.0K MWh
Annual Generation
21.8%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$931/kW
Installed Cost
$24.6/MWh
Operating Cost
Idaho Power Company
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
Market Position
LMP Node
TFPR_1_TOT_GEN-APND
Pricing Hub
—
News & Articles (10)Beta
Regulatory·permitting
Idaho Power Company; Notice of Intent To File License Application, Filing of Pre-Application Document, and Approving Use of the Traditional Licensing Process
Idaho Power Company (other)
Federal Register (FERC)·3 days ago
General
Michael Curtis Obituary (1953 - 2026) - Twin Falls, ID - Magic Valley Times-News
Michael T. CurtisFebruary 17, 1953 - January 18, 2026TWIN FALLS, Idaho -"The mountains shall bring peace to the people.
Legacy obituary·4 weeks ago
Industry·corporate
A century of service: Idaho Falls Power celebrates 125th Anniversary and new Peaking Plant
IFP is hosting a grand opening of its brand-new Natural Gas 17.5MW Peaking Plant and celebrating its 125th Anniversary. The new peaking plant is...
Idaho Falls Power (operator)
LocalNews8.com·3 months ago
General
Cheapest gas stations in Idaho Falls
CheapInsurance.com compiled a list of the cheapest gas stations in Idaho Falls using data from Gas Buddy.
Eastern Progress·5 months ago
Last updated 2026-03-25
View all 10 articles