Upper Baker
Whatcom County, Washington · EIA plant ID 3861 · Operator: Puget Sound Energy Inc
Nameplate105MWSummer 103 MW
Generators2in service
Net generation333GWh12 mo to Dec 2025
Capacity factor37%hydro units, summer MW
Heat rate—thermal plants only
First online1959
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) |
|---|---|---|---|
| 2001 | 296.8 | 32.9% | — |
| 2002 | 353.1 | 39.1% | — |
| 2003 | 331.8 | 36.8% | — |
| 2004 | 358 | 39.6% | — |
| 2005 | 295.2 | 32.7% | — |
| 2006 | 338.6 | 37.5% | — |
| 2007 | 402.8 | 44.6% | — |
| 2008 | 317.1 | 35.0% | — |
| 2009 | 337.4 | 37.4% | — |
| 2010 | 360.5 | 36.9% | — |
| 2011 | 301.3 | 30.9% | — |
| 2012 | 349.7 | 35.7% | — |
| 2013 | 356.6 | 38.8% | — |
| 2014 | 340.1 | 37.0% | — |
| 2015 | 278.8 | 30.3% | — |
| 2016 | 369.1 | 40.0% | — |
| 2017 | 355.7 | 38.7% | — |
| 2018 | 333.8 | 36.3% | — |
| 2019 | 262.9 | 28.6% | — |
| 2020 | 362.1 | 39.3% | — |
| 2021 | 370.7 | 40.3% | — |
| 2022 | 268.1 | 29.6% | — |
| 2023 | 270.8 | 29.9% | — |
| 2024 | 317.8 | 35.0% | — |
| 2025 | 332.7 | 36.7% | — |
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 | 52.4 | 52.4 | Jan 1959 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 52.4 | 51 | Jan 1959 | Operating | — | coming soon |
Owner / operator
Operator: Puget Sound Energy Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Puget Sound Energy Inc | 100.0% | 105 MW |
Nearby plants
Within 80 km.
| Koma Kulshan Associates | 12 MW | 4.2 km |
| Lower Baker | 104 MW | 11.8 km |
| Nooksack Hydro | 2 MW | 30.2 km |
| Glacier Battery Storage | 2 MW | 32.5 km |
| Newhalem | 2 MW | 33.2 km |
| Gorge | 207 MW | 35.8 km |