Port Westward
Natural gas power plant · Columbia County, Oregon
Nameplate capacity
483 MW
Rank in Oregon
#10
of 301 plants
In service since
2007
June 2007
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Portland General Electric Co
- County
- Columbia County
- Generating units
- 2
- Share of state capacity
- 2.52%
- Rank among natural gas plants in Oregon
- #6 of 12
- EIA plant code
- 56227
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combined Cycle | 312 MW | 256 MW | 2007 | Operating |
| 2 | Natural Gas Fired Combined Cycle | 171 MW | 136 MW | 2007 | 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
| Klamath Cogeneration Plant | Natural gas | 502 MW |
| Carty Generating Station | Natural gas | 500 MW |
| Biglow Canyon Wind Farm | Wind | 450 MW |
| Hells Canyon | Hydro | 411 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 483 MW solar plant and a 483 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