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810 MW Hydro operating in Columbia, WA
810 MW
Nameplate Capacity
6
Generators
units
Conventional Hydroelectric
Technology
1970
Operating Since
Coordinates
46.5838, -118.0273
County
Columbia, WA
Nearby Plants
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Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | USACE Northwestern Division | US Army Corps of Engineers - Walla Walla District | United States Army Corps of Engineers |
| Owner(s) | USACE Northwestern Division | US Army Corps of Engineers - Walla Walla District | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Army Corps of Engineers - Walla Walla District
This entity is not yet in the GEM ownership database — chain unavailable.
Little Goose Lock and Dam is a hydroelectric, concrete, run-of-the-river dam in the northwest United States, on the lower Snake River in southeast Washington. At the dam, the river is the border between Columbia and Whitman counties; it is nine miles (14 km) northeast of Starbuck and 25 miles (40 km) north of Dayton.
Read more on WikipediaLittle Goose is a hydroelectric power plant located in Columbia County, Washington. The plant, which began operating in 1970, has a total capacity of 810 MW derived from six generators. It is owned and operated by the USACE Northwestern Division. The primary fuel source is water (WAT), and the plant utilizes conventional hydroelectric technology. Little Goose is within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In terms of size, Little Goose ranks as the 9th largest power plant in Washington out of 23, and 30th nationally out of 194 plants. The plant's latest annual generation was 1,589,274 MWh, resulting in a capacity factor of 22.4%. Recent news coverage related to the plant includes one article pertaining to hazards.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Bonneville Power Administration (BPAT)
Grid Voltage
500.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
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.
184.1K MWh
Latest Month
1.6M MWh
Annual Generation
22.4%
Capacity Factor
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2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $1.9B
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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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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Between 300 and 600 gallons of oil leaked into the Snake River from a turbine system at Little Goose Dam, triggering an environmental response.
source