Encogen
Natural gas power plant in Whatcom County, Washington. 176.4 MW of nameplate capacity across 4 generators, operated by Puget Sound Energy Inc.
Also known as Encogen Cogeneration Plant · EIA plant 7870
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 176.4 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- March 1993First generator online
- Operator
- Puget Sound Energy IncEIA operator ID 15500
- Grid
- PSEIBalancing authority PSEI
- Price nodes
- None linkedNo verified ISO node
- Location
- Whatcom County, WA48.7460, −122.4860
- EIA plant ID
- 7870EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Encogen produces
Free · EIA-923Net generation, 2025
354 GWh
354,059 MWh, final
Capacity factor, 2025
22.9%
2024: 48.7%
January to July 2026
43.4 GWh
Provisional
Range, 2015 to 2025
200.5–903.0
GWh a year. Low 2018, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,244,308 | Not reported | 12 of 12 |
| 2001 | 1,402,655 | Not reported | 12 of 12 |
| 2002 | 941,560 | Not reported | 12 of 12 |
| 2003 | 748,687 | Not reported | 12 of 12 |
| 2004 | 456,260 | Not reported | 12 of 12 |
| 2005 | 459,082 | Not reported | 12 of 12 |
| 2006 | 260,041 | Not reported | 12 of 12 |
| 2007 | 143,066 | Not reported | 12 of 12 |
| 2008 | 98,881 | Not reported | 12 of 12 |
| 2009 | 380,097 | Not reported | 12 of 12 |
| 2010 | 146,232 | 9.5% | 12 of 12 |
| 2011 | 91,753 | 5.9% | 12 of 12 |
| 2012 | 112,372 | 7.3% | 12 of 12 |
| 2013 | 283,520 | Not reported | 12 of 12 |
| 2014 | 219,643 | Not reported | 12 of 12 |
| 2015 | 300,298 | Not reported | 12 of 12 |
| 2016 | 212,717 | 13.7% | 12 of 12 |
| 2017 | 202,464 | 13.1% | 12 of 12 |
| 2018 | 200,543 | 13.0% | 12 of 12 |
| 2019 | 401,290 | 26.0% | 12 of 12 |
| 2020 | 370,143 | 23.9% | 12 of 12 |
| 2021 | 530,479 | 34.3% | 12 of 12 |
| 2022 | 426,767 | 27.6% | 12 of 12 |
| 2023 | 903,027 | 58.4% | 12 of 12 |
| 2024 | 753,950 | 48.7% | 12 of 12 |
| 2025 | 354,059 | 22.9% | 12 of 12 |
| 2026 (provisional, partial year) | 43,375 | 4.8% | 7 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 CAMPDCO₂, 2025
188,773
US short tons. 2024: 401,317
SO₂, 2025
3
US short tons
NOx, 2025
44
US short tons
CO₂ per MWh, calculated
0.53 t
About 1,066 lb per MWh
3 of 3 EPA units reported CO₂ in 2025 (CT1, CT2, CT3), matched to EIA plant 7870 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
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 |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 39.4 | March 1993 |
| CTG2 | Natural Gas Fired Combined Cycle | 39.4 | March 1993 |
| CTG3 | Natural Gas Fired Combined Cycle | 39.4 | March 1993 |
| STG | Natural Gas Fired Combined Cycle | 58.2 | April 1993 |
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.
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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Power plants near Encogen
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Questions about Encogen
How much power does Encogen produce?
Encogen reported 354,059 MWh (354 GWh) of net generation in 2025, a 22.9% capacity factor on 176.4 MW of nameplate capacity. From January to July 2026 it reported 43.4 GWh, which is provisional.
Where is Encogen?
Encogen is in Whatcom County, Washington, at 48.7460, −122.4860. It is in the Puget Sound Energy balancing area (PSEI).
Who operates Encogen?
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 Encogen start operating?
Its first generator began operating in March 1993, 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page