Nameplate capacity
611 MW
Rank in Oregon
#7
of 301 plants
In service since
1974
August 1974
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Portland General Electric Co
- County
- Columbia County
- Generating units
- 8
- Share of state capacity
- 3.18%
- Rank among natural gas plants in Oregon
- #3 of 12
- EIA plant code
- 8073
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 7 | Natural Gas Fired Combined Cycle | 176 MW | 137 MW | 1977 | Operating |
| 1 | Natural Gas Fired Combined Cycle | 68 MW | 55 MW | 1974 | Operating |
| 2 | Natural Gas Fired Combined Cycle | 68 MW | 55 MW | 1974 | Operating |
| 3 | Natural Gas Fired Combined Cycle | 68 MW | 55 MW | 1974 | Operating |
| 4 | Natural Gas Fired Combined Cycle | 68 MW | 55 MW | 1974 | Operating |
| 5 | Natural Gas Fired Combined Cycle | 68 MW | 55 MW | 1974 | Operating |
| 6 | Natural Gas Fired Combined Cycle | 68 MW | 55 MW | 1974 | Operating |
| 8 | Natural Gas Fired Combustion Turbine | 25 MW | 24 MW | 2001 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Oregon
| Hermiston Power Partnership | Natural gas | 689 MW |
| Hermiston Generating Plant | Natural gas | 621 MW |
| Klamath Cogeneration Plant | Natural gas | 502 MW |
| Carty Generating Station | Natural gas | 500 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 611 MW solar plant and a 611 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Oregon power plants · What Oregon actually generates