Dworshak — Plant Summary
- EIA Plant ID
- 840
- Capacity
- 465 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Clearwater, ID
- Operating Since
- 1974
- Generators
- 3
- Operator
- USACE Northwestern Division
- Parent Company
- —
- Annual Generation
- 1,353,569 MWh
- Capacity Factor
- 33.0%
- Balancing Authority
- Bonneville Power Administration
- ISO/RTO
- —
- NERC Region
- WECC
Dworshak
OperatingHydro
Ranked #2 of 76 Hydro plants in ID#51 of 1454 nationally
465 MW Hydro operating in Clearwater, ID — Bonneville Power Administration
EIAGEMWD
465 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1974
Operating Since
Location
Coordinates
46.5143, -116.2977
County
Clearwater, ID
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 | USACE Northwestern Division | US Army Corps of Engineers - Walla Walla District [100%] | — |
| Owner(s) | USACE Northwestern Division | US Army Corps of Engineers - Walla Walla District [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as US Army Corps of Engineers - Walla Walla District [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
Dworshak Dam is a concrete gravity dam in the western United States, on the North Fork of the Clearwater River in north central Idaho. In Clearwater County, the dam is located approximately four miles (6 km) northwest of Orofino and impounds the Dworshak Reservoir for flood control and hydroelectricity generation. By capacity, the reservoir is the largest in Idaho and fourth-largest in the Pacific Northwest.
Read more on WikipediaDworshak is a 465 MW hydroelectric power plant located in Clearwater County, Idaho. The plant began operating in 1974 and is owned and operated by the USACE Northwestern Division. It utilizes conventional hydroelectric technology with water as its primary fuel source. The facility has three generators.
Dworshak ranks as the second-largest of five hydroelectric plants in Idaho, and 51st out of 194 nationally. The plant operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In the latest year of reported generation, Dworshak produced 1,353,569 MWh of electricity, achieving a capacity factor of 33.0%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Bonneville Power Administration
Grid Voltage
500 kV
Regulatory Status
RE
Entity Type
Federal
Sector
Electric Utility
Generation
48.8K MWh
Latest Month
1.4M MWh
Annual Generation
33.0%
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.
News & Articles (3)Beta
General
News - Dworshak’s “Skeleton Bay” flooded in key step toward regional energy growth
On the banks of the North Fork Clearwater River, a new chapter is being written for one of the Pacific Northwest's most important hydropower...
DVIDS·7 months ago
Industry·capacity addition
News - Dworshak’s “Skeleton Bay” flooded in key step toward regional energy growth
On the banks of the North Fork Clearwater River, a new chapter is being written for one of the Pacific Northwest's most important hydropower...
Dworshak (other)North Fork Clearwater River (other)
DVIDS·7 months ago
General
Steven J. Gilliland Obituary (2024) - Pomeroy, WA - Mountain View Funeral Home & Crematory - Lewiston
Steven Gilliland Obituary Steven James Gilliland, 76, passed away peacefully Friday, June 7, 2024, at Royal Plaza of Olympus in Lewiston.
Legacy | Obituary·1 years ago
Last updated 2026-03-26
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