16.5 MW Hydro operating in Twin Falls, ID — Idaho Power Company
16.5 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1947
Operating Since
Coordinates
42.7664, -114.9083
County
Twin Falls, ID
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Operating | — | — |
Upper Salmon B is a hydroelectric power plant located in Twin Falls County, Idaho. The plant has a total capacity of 16.5 MW across two generators. It began operating in 1947 and is owned by IDACORP and operated by Idaho Power Company. The plant utilizes conventional hydroelectric technology and its primary fuel source is water (WAT).
In the most recent year of reported generation data, Upper Salmon B produced 102,286 MWh of electricity, achieving a capacity factor of 69.4%. The plant operates within the Idaho Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Upper Salmon B is ranked as the 21st largest power plant in Idaho out of 76, and 527th nationally out of 1464 plants.
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
6.7K MWh
Latest Month
102.3K MWh
Annual Generation
69.4%
Capacity Factor
No financial data available for this plant.
Market Position
LMP Node
US34_1_TOT_B_GEN-APND
Pricing Hub
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Last updated 2026-03-25
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