Puget Sound Energy (PSEI)
Puget Sound Energy (PSEI) is a balancing authority on the North American grid. On the map it has 34 power plants with 3 GW of capacity, natural gas the largest share at 1.8 GW. Its peak load is 4,475 MW.
At a glance
- Peak load: 4,475 MW
Capacity by fuel
34 power plants with 3 GW of capacity, planned generators left out.
- Natural gas: 1.8 GW from 9 plants (58%)
- Wind: 868 MW from 5 plants (29%)
- Hydro: 337 MW from 12 plants (11%)
- Biomass: 35 MW from 3 plants (1%)
- Solar: 15 MW from 3 plants (under 1%)
- Oil: 3 MW from 1 plant (under 1%)
- Battery storage: 2 MW from 1 plant (under 1%)
Largest plants
- Clearwater Wind I: Wind, 366 MW, Montana
- Fredonia (WA): Natural gas, 280 MW, Washington
- Wild Horse: Wind, 271 MW, Washington
- Ferndale Generating Station: Natural gas, 270 MW, Washington
- Mint Farm Generating Station: Natural gas, 270 MW, Washington
- Goldendale Generating Station: Natural gas, 264 MW, Washington
- Encogen: Natural gas, 159 MW, Washington
- Skookumchuck Wind Facility: Wind, 137 MW, Washington
- Frederickson: Natural gas, 134 MW, Washington
- Whitehorn: Natural gas, 134 MW, Washington
Planned and under construction
3 generators planned, under construction or testing, 570 MW in all, not counted above.
- Battery storage: 570 MW
States and provinces
- Washington: 33 plants
- Montana: 1 plant
Sources
Power plants: EIA-860M (US); NRCan NACEI (Canada, Mexico); WRI GPPD (Mexico); OpenStreetMap via Geofabrik (Canada, Mexico gap fill); USGS USWTDB/USPVDB; EPA eGRID; Natural Earth admin-1; HIFLD control areas; location attributes from WorldPop (R2025A), Global Solar Atlas PVOUT, Global Wind Atlas 4, USFS Wildfire Hazard Potential, the USGS National Seismic Hazard Model and the previous publish's lines and substations; water distances from OpenStreetMap via Geofabrik; gas distances and county queue from the previous publish's EIA gas pipelines and LBNL Queued Up requests; nearest city from Natural Earth populated places; cooling degree days from NOAA NCEI nClimDiv county normals; elevation and slope from the Copernicus DEM GLO-30 (ESA, via AWS Open Data); water stress from WRI Aqueduct 4.0; ozone nonattainment from the EPA Green Book; drought from the U.S. Drought Monitor; tribal land from US Census TIGER/Line. License: ODbL (derivative database; EIA content is public domain, NRCan OGL-Canada, WRI GPPD CC BY 4.0; location attributes from WorldPop, Global Solar Atlas, Global Wind Atlas, LBNL Queued Up and WRI Aqueduct CC BY 4.0, USFS, USGS, EIA, NOAA, EPA, US Census and Natural Earth public domain, Copernicus DEM GLO-30 © DLR e.V. and Airbus Defence and Space GmbH, the U.S. Drought Monitor courtesy of NDMC)
Balancing authorities: HIFLD Control Areas (position, peak load); EIA-930 reference tables (which BAs are active); EIA-861 (a feature's BA); Wattlas outlines for Canadian and Mexican BAs. License: Public domain