Nameplate capacity
1,162 MW
Rank in Oregon
#3
of 301 plants
In service since
1938
July 1938
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- USACE Northwestern Division
- County
- Multnomah County
- Generating units
- 20
- Share of state capacity
- 6.05%
- Rank among hydro plants in Oregon
- #3 of 63
- EIA plant code
- 3075
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 11 | Conventional Hydroelectric | 67 MW | 67 MW | 1982 | Operating |
| 12 | Conventional Hydroelectric | 67 MW | 67 MW | 1982 | Operating |
| 13 | Conventional Hydroelectric | 67 MW | 67 MW | 1982 | Operating |
| 14 | Conventional Hydroelectric | 67 MW | 67 MW | 1982 | Operating |
| 15 | Conventional Hydroelectric | 67 MW | 67 MW | 1982 | Operating |
| 16 | Conventional Hydroelectric | 67 MW | 67 MW | 1981 | Operating |
| 17 | Conventional Hydroelectric | 67 MW | 67 MW | 1981 | Operating |
| 18 | Conventional Hydroelectric | 67 MW | 67 MW | 1981 | Operating |
| 10 | Conventional Hydroelectric | 62 MW | 54 MW | 1944 | Operating |
| 3 | Conventional Hydroelectric | 62 MW | 62 MW | 1941 | Operating |
| 4 | Conventional Hydroelectric | 62 MW | 62 MW | 1941 | Operating |
| 5 | Conventional Hydroelectric | 62 MW | 62 MW | 1941 | Operating |
| 6 | Conventional Hydroelectric | 62 MW | 62 MW | 1942 | Operating |
| 7 | Conventional Hydroelectric | 62 MW | 62 MW | 1943 | Operating |
| 8 | Conventional Hydroelectric | 62 MW | 62 MW | 1943 | Operating |
| 9 | Conventional Hydroelectric | 62 MW | 62 MW | 1943 | Out of service but expected to return to service in next calendar year |
| 1 | Conventional Hydroelectric | 54 MW | 54 MW | 1938 | Out of service but expected to return to service in next calendar year |
| 2 | Conventional Hydroelectric | 54 MW | 54 MW | 1938 | Out of service but expected to return to service in next calendar year |
| F1 | Conventional Hydroelectric | 13 MW | 13 MW | 1982 | Operating |
| F2 | Conventional Hydroelectric | 13 MW | 13 MW | 1981 | Out of service but expected to return to service in next calendar year |
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
| John Day | Hydro | 2,160 MW |
| The Dalles | Hydro | 1,820 MW |
| McNary | Hydro | 991 MW |
| Hermiston Power Partnership | Natural gas | 689 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 1,162 MW solar plant and a 1,162 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