Round Butte
Round Butte is a 373 MW hydroelectric power plant in Jefferson County, Oregon, operated by Portland General Electric Co. EIA-860M lists 3 generating units here. Its units entered service in 1964.
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
- 372.5 MW
- 353 MW net summer
- Generating units
- 3
- In service
- 1964
- EIA plant ID
- 3050
Where it is
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- County
- Jefferson County, Oregon
- Coordinates
- 44.6058, -121.2773
- Balancing authority
- PGE
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Portland General Electric Co
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Round Butte: FAQ
- Where is Round Butte?
- In Jefferson 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 Round Butte?
- 373 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Round Butte?
- EIA-860M names Portland General Electric Co 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 Round Butte LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Portland General Electric Co 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 "Round Butte LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Round Butte still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.