Hermiston Power Partnership
Hermiston Power Partnership is a 689 MW natural gas power plant in Umatilla County, Oregon, operated by Hermiston Power Partnership. EIA-860M lists 3 generating units here. Its units entered service in 2002.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 689.4 MW
- 629 MW net summer
- Generating units
- 3
- In service
- 2002
- EIA plant ID
- 55328
Where it is
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- County
- Umatilla County, Oregon
- Coordinates
- 45.794, -119.3133
- Balancing authority
- GRID
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Hermiston Power Partnership
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combined Cycle
- Status
- Operating
Hermiston Power Partnership: FAQ
- Where is Hermiston Power Partnership?
- In Umatilla County, Oregon (OR). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Hermiston Power Partnership?
- 689 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Hermiston Power Partnership?
- EIA-860M names Hermiston Power Partnership as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Hermiston Power Partnership LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Hermiston Power Partnership here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Hermiston Power Partnership LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Hermiston Power Partnership still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.