Summer Falls Power Plant — Plant Summary
- EIA Plant ID
- 56695
- Capacity
- 92 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Grant, WA
- Operating Since
- 1985
- Generators
- 2
- Operator
- Columbia Basin Hydropower
- Parent Company
- —
- Annual Generation
- 398,185 MWh
- Capacity Factor
- 48.9%
- Balancing Authority
- Avista Corporation
- ISO/RTO
- —
- NERC Region
- WECC
Summer Falls Power Plant
OperatingHydro
Ranked #24 of 75 Hydro plants in WA#204 of 1454 nationally
92 MW Hydro operating in Grant, WA — Avista Corporation
EIAGEMWD
92 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1985
Operating Since
Location
Ownership & Operator
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 | Columbia Basin Hydropower | Columbia Basin Hydropower | — |
| Owner(s) | East Columbia Basin Irr Dist, Quincy-Columbia Basin Irr Dist, South Columbia Basin Irr Dist | Grand Coulee Project Hydroelectric Authority [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as Grand Coulee Project Hydroelectric Authority [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
Summer Falls Power Plant is a 92 MW hydroelectric facility located in Grant County, Washington. The plant began operating in 1985 and is owned and operated by Columbia Basin Hydropower. It consists of two generators utilizing conventional hydroelectric technology. The plant's primary fuel source is water (WAT).
In the most recent year of reported data, Summer Falls Power Plant generated 398,185 MWh of electricity, achieving a capacity factor of 48.9%. The plant operates within the Avista Corporation balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Summer Falls ranks as the 24th largest power plant in Washington out of 75, and 206th nationally out of 1464 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Avista Corporation
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Municipal
Sector
Electric Utility
Generation
0 MWh
Latest Month
398.2K MWh
Annual Generation
48.9%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
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