Potholes East Canal 66.0
Franklin County, Washington · EIA plant ID 56697 · Operator: Columbia Basin Hydropower
Nameplate2MWSummer 2 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor16%hydro units, summer MW
Heat rate—thermal plants only
First online1985
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2007 | 6.9 | 34.4% | — |
| 2008 | 8 | 39.4% | — |
| 2009 | 8.4 | 41.7% | — |
| 2010 | 7.3 | 36.0% | — |
| 2011 | 8.6 | 42.7% | — |
| 2012 | 9.4 | 46.4% | — |
| 2013 | 7.8 | 38.5% | — |
| 2014 | 8.3 | 41.1% | — |
| 2015 | 7.6 | 37.6% | — |
| 2016 | 9 | 44.8% | — |
| 2017 | 8.3 | 41.4% | — |
| 2018 | 4.1 | 20.4% | — |
| 2019 | 4.3 | 21.1% | — |
| 2020 | 3.8 | 18.7% | — |
| 2021 | 6.3 | 31.4% | — |
| 2022 | 6.4 | 31.9% | — |
| 2023 | 6.4 | 31.7% | — |
| 2024 | 4.8 | 23.8% | — |
| 2025 | 3.2 | 16.0% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 2.3 | 2.3 | Mar 1985 | Operating | — | coming soon |
Owner / operator
Operator: Columbia Basin Hydropower. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Quincy-Columbia Basin Irr Dist | 33.3% | 1 MW |
| East Columbia Basin Irr Dist | 33.3% | 1 MW |
| South Columbia Basin Irr Dist | 33.3% | 1 MW |
Nearby plants
Within 80 km.
| Eltopia Branch Canal 4.6 | 2 MW | 0 km |
| Horn Rapids Solar, Storage and Training | 4 MW | 5.9 km |
| Columbia Generating Station | 1,200 MW | 12 km |
| Chandler | 12 MW | 28.6 km |
| Ice Harbor | 603 MW | 32.1 km |
| Nine Canyon | 96 MW | 33.7 km |