Encogen
Natural gas power plant · Whatcom County, Washington
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Puget Sound Energy Inc
- County
- Whatcom County
- Generating units
- 4
- Share of state capacity
- 0.56%
- Rank among natural gas plants in Washington
- #10 of 16
- EIA plant code
- 7870
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| STG | Natural Gas Fired Combined Cycle | 58 MW | 56 MW | 1993 | Operating |
| CTG1 | Natural Gas Fired Combined Cycle | 39 MW | 35 MW | 1993 | Operating |
| CTG2 | Natural Gas Fired Combined Cycle | 39 MW | 35 MW | 1993 | Operating |
| CTG3 | Natural Gas Fired Combined Cycle | 39 MW | 35 MW | 1993 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Washington
| Frederickson | Natural gas | 178 MW |
| FPL Energy Vansycle LLC (WA) | Wind | 177 MW |
| Whitehorn | Natural gas | 169 MW |
| Mayfield | Hydro | 162 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 176 MW solar plant and a 176 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Washington power plants · What Washington actually generates