Darrington
Wood biomass power plant in Snohomish County, Washington. 4.5 MW of nameplate capacity across 1 generator, operated by Hampton Lumber Mills - Washington Inc.
Also known as EIA plant 57969
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 4.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- February 2007First generator online
- Operator
- Hampton Lumber Mills - Washington IncEIA operator ID 57344
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Snohomish County, WA48.2697, −121.6000
- EIA plant ID
- 57969EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Darrington produces
Free · EIA-923Net generation, 2025
12.3 GWh
12,251 MWh, final
Capacity factor, 2025
31.1%
2024: 43.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
12.3–19.1
GWh a year. Low 2025, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | 13,604 | 34.5% | 12 of 12 |
| 2012 | 14,028 | 35.5% | 12 of 12 |
| 2013 | 18,826 | 47.8% | 12 of 12 |
| 2014 | 18,992 | 48.2% | 12 of 12 |
| 2015 | 17,755 | 45.0% | 12 of 12 |
| 2016 | 19,086 | 48.3% | 12 of 12 |
| 2017 | 17,884 | 45.4% | 12 of 12 |
| 2018 | 16,932 | 43.0% | 12 of 12 |
| 2019 | 16,782 | 42.6% | 12 of 12 |
| 2020 | 16,337 | 41.3% | 12 of 12 |
| 2021 | 15,510 | 39.3% | 12 of 12 |
| 2022 | 16,591 | 42.1% | 12 of 12 |
| 2023 | 15,975 | 40.5% | 12 of 12 |
| 2024 | 17,049 | 43.1% | 12 of 12 |
| 2025 | 12,251 | 31.1% | 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Wood/Wood Waste Biomass | 4.5 | February 2007 |
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 Hampton Lumber Mills - Washington Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Darrington
How much power does Darrington produce?
Darrington reported 12,251 MWh (12.3 GWh) of net generation in 2025, a 31.1% capacity factor on 4.5 MW of nameplate capacity.
Where is Darrington?
Darrington is in Snohomish County, Washington, at 48.2697, −121.6000. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Darrington?
EIA-860M for August 2026 lists Hampton Lumber Mills - Washington Inc as the operator (EIA operator ID 57344). The operator is not always the owner.
When did Darrington start operating?
Its first generator began operating in February 2007, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page