McNary Dam Fish Attraction Project
Benton County, Washington · EIA plant ID 7511 · Operator: Northern Wasco County PUD
Nameplate10MWSummer 9 MW
Generators1in service
Net generation73GWh12 mo to Dec 2025
Capacity factor92%hydro units, summer MW
Heat rate—thermal plants only
First online1997
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) |
|---|---|---|---|
| 2002 | 70.3 | 90.1% | — |
| 2003 | 76.4 | 97.9% | — |
| 2004 | 80.7 | 103.2% | — |
| 2005 | 79.7 | 102.3% | — |
| 2006 | 63.3 | 81.2% | — |
| 2007 | 68.7 | 88.1% | — |
| 2008 | 70.7 | 90.5% | — |
| 2009 | 76.9 | 98.6% | — |
| 2010 | 82 | 105.2% | — |
| 2011 | 66.5 | 85.3% | — |
| 2012 | 77.4 | 99.1% | — |
| 2013 | 76.6 | 98.3% | — |
| 2014 | 76.7 | 98.4% | — |
| 2015 | 69.7 | 89.5% | — |
| 2016 | 0 | 0.0% | — |
| 2017 | 34.3 | 43.5% | — |
| 2018 | 68.6 | 87.1% | — |
| 2019 | 72.3 | 91.7% | — |
| 2020 | 41.3 | 52.2% | — |
| 2021 | 39.7 | 50.4% | — |
| 2022 | 61.7 | 78.3% | — |
| 2023 | 73.8 | 93.6% | — |
| 2024 | 64.2 | 81.2% | — |
| 2025 | 72.5 | 92.0% | — |
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 | 10 | 9 | Nov 1997 | Operating | — | coming soon |
Owner / operator
Operator: Northern Wasco County PUD. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Northern Wasco County PUD - (OR) | 50.0% | 5 MW |
| PUD No 1 of Klickitat County | 50.0% | 5 MW |
Nearby plants
Within 80 km.
| McNary | 991 MW | 0 km |
| NorWest Energy 9 LLC | 6 MW | 4.3 km |
| Hermiston Generating Plant | 621 MW | 16.1 km |
| Hermiston Power Partnership | 689 MW | 16.3 km |
| Nine Canyon | 96 MW | 23.3 km |
| Four Corners Windfarm LLC | 8 MW | 25.3 km |