💧 Hydroelectric Power Plants in Oregon
Oregon operates 69 hydroelectric power plants totaling 8,474 MW of nameplate capacity. Annual generation: 26.3M MWh.
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.
Plants69operating
Capacity8,473 MWnameplate
Generation26.3M MWhannual
All Oregon hydroelectric plants
| Plant | City | County | Capacity | Operator |
|---|---|---|---|---|
| John Day | Rufus | Sherman County | 2,160 MW | Usace Northwestern Division |
| The Dalles | The Dalles | Wasco County | 1,820 MW | Usace Northwestern Division |
| Bonneville | Cascade Locks | Multnomah County | 1,162 MW | Usace Northwestern Division |
| Mcnary | Umatilla | Umatilla County | 991 MW | Usace Northwestern Division |
| Hells Canyon | Oxbow | Wallowa County | 411 MW | Idaho Power Co |
| Round Butte | Madras | Jefferson County | 373 MW | Portland General Electric Co |
| Oxbow (Or) | Oxbow | Baker County | 190 MW | Idaho Power Co |
| Lookout Point | Lowell | Lane County | 120 MW | Usace Northwestern Division |
| Carmen Smith | Mckenzie Bridge | Linn County | 114 MW | Eugene Water & Electric Board |
| Pelton | Madras | Jefferson County | 110 MW | Portland General Electric Co |
| Detroit | Mill City | Marion County | 100 MW | Usace Northwestern Division |
| John C Boyle | Keno | Klamath County | 99 MW | Pacificorp |
| Green Peter | Foster | Linn County | 80 MW | Usace Northwestern Division |
| Oak Grove | Estacada | Clackamas County | 51 MW | Portland General Electric Co |
| Lost Creek | Trail | Jackson County | 49 MW | Usace Northwestern Division |
| Lemolo 2 | Toketee Falls | Douglas County | 44 MW | Pacificorp |
| Toketee Falls | Idleyld Park | Douglas County | 43 MW | Pacificorp |
| North Fork | Estacada | Clackamas County | 41 MW | Portland General Electric Co |
| Faraday | Estacada | Clackamas County | 37 MW | Portland General Electric Co |
| Lemolo 1 | Idleyld Park | Douglas County | 32 MW | Pacificorp |
| Prospect 2 | Prospect | Jackson County | 32 MW | Pacificorp |
| Hills Creek | Oakridge | Lane County | 30 MW | Usace Northwestern Division |
| Clearwater 2 | Idleyld Park | Douglas County | 26 MW | Pacificorp |
| Cougar | Lowell | Lane County | 26 MW | Usace Northwestern Division |
| Php 1 | Sandy | Multnomah County | 24 MW | Portland City Of |
| Foster | Foster | Linn County | 20 MW | Usace Northwestern Division |
| Warm Springs Power Enterprises | Warm Springs | Jefferson County | 20 MW | Warm Springs Power Enterprises |
| River Mill | Estacada | Clackamas County | 19 MW | Portland General Electric Co |
| Slide Creek | Idleyld Park | Douglas County | 18 MW | Pacificorp |
| Big Cliff | Gates | Marion County | 18 MW | Usace Northwestern Division |
| Green Springs | Columbia Falls | Jackson County | 17 MW | U S Bureau Of Reclamation |
| Leaburg | Springfield | Lane County | 16 MW | Eugene Water & Electric Board |
| Sullivan | West Linn | Clackamas County | 15 MW | Portland General Electric Co |
| Clearwater 1 | Idleyld Park | Douglas County | 15 MW | Pacificorp |
| Dexter | Lowell | Lane County | 15 MW | Usace Northwestern Division |
| Stone Creek | Estacada | Clackamas County | 12 MW | Eugene Water & Electric Board |
| Php 2 | Sandy | Clackamas County | 12 MW | Portland City Of |
| Fish Creek | Idleyld Park | Douglas County | 11 MW | Pacificorp |
| Soda Springs | Idleyld Park | Douglas County | 11 MW | Pacificorp |
| Tunnel 1 Power Project | Nyssa | Malheur County | 9 MW | Owyhee Irrigation District |
| Walterville | Springfield | Lane County | 8 MW | Eugene Water & Electric Board |
| Dorena Hydro-Electric Facility | Cottage Grove | Lane County | 8 MW | Dorena Hydro, Llc |
| Prospect 3 | Prospect | Jackson County | 7 MW | Pacificorp |
| Dalles Dam North Fishway Project | The Dalles | Wasco County | 7 MW | Northern Wasco County Pud |
| Siphon Power Project | Bend | Deschutes County | 5 MW | Central Oregon Irrigation Dist |
| Owyhee Dam Power Project | Nyssa | Malheur County | 5 MW | Owyhee Irrigation District |
| Juniper Ridge Hydroelectric Project | Bend | Deschutes County | 5 MW | Central Oregon Irrigation Dist |
| Opal Springs Hydro | Culver | Jefferson County | 4 MW | Deschutes Valley Water District |
| Falls Creek | Cascadia | Linn County | 4 MW | Eagle Creek Renewable Energy, Llc |
| Prospect 1 | Prospect | Jackson County | 4 MW | Pacificorp |
| Middle Fork Irrigation District | Parkdale | Hood River County | 3 MW | Middle Fork Irrigation Dist |
| East Side | Klamath Falls | Klamath County | 3 MW | Pacificorp |
| 45 Mile Hydroelectric Project | Culver | Jefferson County | 3 MW | Ebd Hydro Llc |
| Eagle Point | Eagle Point | Jackson County | 3 MW | Pacificorp |
| Copper Dam Plant | Hood River | Hood River County | 3 MW | Farmer's Irrigation District |
| Peters Drive Plant | Hood River | Hood River County | 2 MW | Farmer's Irrigation District |
| Galesville Project | Azalea | Douglas County | 2 MW | Douglas County |
| Sprague Hydro | Bly | Klamath County | 1 MW | Sprague Hydro Llc |
| Timothy Lake Powerhouse | Estacada | Clackamas County | 1 MW | Portland General Electric Co |
| Wallowa Falls | Joseph | Wallowa County | 1 MW | Pacificorp |
| Bend | Bend | Deschutes County | 1 MW | Pacificorp |
| C-Drop Hydro | Klamath Falls | Klamath County | 1 MW | C-Drop |
| Prospect 4 | Prospect | Jackson County | 1 MW | Pacificorp |
| Michell Butte Power Project | Nyssa | Malheur County | 1 MW | Owyhee Irrigation District |
| Lacomb Irrigation District | Lebanon | Linn County | 1 MW | Lacomb Irrigation Dist |
| Powerdale | Hood River | Hood River County | — | Pacificorp |
| Bull Run Hydro | Sandy | Clackamas County | — | Portland General Electric Co |
| Cline Falls | Redmond | Deschutes County | — | Pacificorp |
| Ground Water Pumping Station | Portland | Multnomah County | — | Portland City Of |