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675 MW Hydro operating in Washington, ID — Idaho Power Company
675 MW
Nameplate Capacity
5
Generators
units
Conventional Hydroelectric
Technology
1958
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Operating | operating | — |
Brownlee Dam is a hydroelectric earth fill embankment dam in the western United States, on the Snake River along the Idaho-Oregon border. In Hells Canyon at river mile 285, it impounds the Snake River in the 58-mile-long (93 km) Brownlee Reservoir.
Read more on WikipediaBrownlee is a 675 MW hydroelectric power plant located in Washington County, Idaho. The plant began operating in 1958 and utilizes conventional hydroelectric technology. It has 5 generators and is owned by IDACORP, with Idaho Power Co. acting as the operator. Brownlee is the largest hydroelectric plant in Idaho out of 5 such plants, and ranks 35th nationally out of 194 hydroelectric plants.
The plant's primary fuel source is water (WAT). In the most recent year with available data, Brownlee generated 2,209,109 MWh of electricity, achieving a capacity factor of 37.3%. The installed cost of the plant was $408.1 per kW. Brownlee operates within the Idaho Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
128.6K MWh
Latest Month
2.2M MWh
Annual Generation
37.3%
Capacity Factor
Energy storage · Idaho Power Company · Data from 2015–2024
$420/kW
Installed Cost
$3.0/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
LMP Node
BLPR_GNODE011
Pricing Hub
—
Last updated 2026-03-26
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ask pi about BrownleeIdaho Power Company (IPCO)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility