Lower Baker
Hydro power plant in Skagit County, Washington. 103.9 MW of nameplate capacity across 2 generators, operated by Puget Sound Energy Inc.
Also known as Lower Baker Dam · EIA plant 3855
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 103.9 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- March 1960First generator online
- Operator
- Puget Sound Energy IncEIA operator ID 15500
- Grid
- PSEIBalancing authority PSEI
- Price nodes
- None linkedNo verified ISO node
- Location
- Skagit County, WA48.5478, −121.7407
- EIA plant ID
- 3855EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Lower Baker produces
Free · EIA-923Net generation, 2025
365 GWh
364,775 MWh, final
Capacity factor, 2025
40.1%
2024: 35.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
262.8–385.3
GWh a year. Low 2023, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 349,678 | Not reported | 12 of 12 |
| 2001 | 277,485 | Not reported | 12 of 12 |
| 2002 | 400,861 | Not reported | 12 of 12 |
| 2003 | 389,551 | Not reported | 12 of 12 |
| 2004 | 387,309 | Not reported | 12 of 12 |
| 2005 | 296,319 | Not reported | 12 of 12 |
| 2006 | 334,145 | Not reported | 12 of 12 |
| 2007 | 436,208 | Not reported | 12 of 12 |
| 2008 | 321,027 | Not reported | 12 of 12 |
| 2009 | 344,847 | Not reported | 12 of 12 |
| 2010 | 366,338 | 49.2% | 12 of 12 |
| 2011 | 332,792 | 44.7% | 12 of 12 |
| 2012 | 349,273 | 46.8% | 12 of 12 |
| 2013 | 352,565 | Not reported | 12 of 12 |
| 2014 | 429,608 | 44.1% | 12 of 12 |
| 2015 | 308,611 | 31.7% | 12 of 12 |
| 2016 | 358,833 | 36.7% | 12 of 12 |
| 2017 | 313,113 | Not reported | 12 of 12 |
| 2018 | 385,262 | 39.6% | 12 of 12 |
| 2019 | 263,806 | 27.1% | 12 of 12 |
| 2020 | 383,706 | 39.3% | 12 of 12 |
| 2021 | 376,417 | 38.6% | 12 of 12 |
| 2022 | 317,498 | Not reported | 12 of 12 |
| 2023 | 262,831 | 28.9% | 12 of 12 |
| 2024 | 326,697 | 35.8% | 12 of 12 |
| 2025 | 364,775 | 40.1% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 3 | Conventional Hydroelectric | 80.8 | March 1960 |
| 4 | Conventional Hydroelectric | 23.1 | July 2013 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Puget Sound Energy Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Lower Baker
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Questions about Lower Baker
How much power does Lower Baker produce?
Lower Baker reported 364,775 MWh (365 GWh) of net generation in 2025, a 40.1% capacity factor on 103.9 MW of nameplate capacity.
Where is Lower Baker?
Lower Baker is in Skagit County, Washington, at 48.5478, −121.7407. It is in the Puget Sound Energy balancing area (PSEI).
Who operates Lower Baker?
EIA-860M for August 2026 lists Puget Sound Energy Inc as the operator (EIA operator ID 15500). The operator is not always the owner.
When did Lower Baker start operating?
Its first generator began operating in March 1960, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page