18 MW Hydro operating in Twin Falls, ID — Idaho Power Company
18 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1937
Operating Since
Coordinates
42.7676, -114.9248
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 A is a hydroelectric power plant located in Twin Falls County, Idaho. The plant has a total capacity of 18 MW and consists of two generators utilizing conventional hydroelectric technology. It began operating in 1937 and is owned by IDACORP, with Idaho Power Co. serving as the operator. The plant is ranked 20th out of 76 power plants in Idaho and 511th out of 1464 nationally.
In the most recent year with available data, Upper Salmon A generated 107,962 MWh of electricity, achieving a capacity factor of 68.2%. The plant operates within the Idaho Power Company balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region. As of the latest data, there have been two news articles related to the plant, covering regulatory and industry topics.
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
6.4K MWh
Latest Month
108.0K MWh
Annual Generation
68.2%
Capacity Factor
No financial data available for this plant.
Market Position
LMP Node
US12_1_TOT_A_GEN-APND
Pricing Hub
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Last updated 2026-03-26
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