116th largest plant in Washington · 8089th nationally
West Point Treatment Plant is a biomass power plant in Washington with a nameplate capacity of 4.6 MW. It generates roughly 7.2k MWh per year — enough to power about 687 average U.S. homes.
Its capacity factor of 18% reflects intermittent or peaking operation.
| Plant Name | West Point Treatment Plant |
|---|---|
| Operator | King County Dept-Natural Res |
| City | Seattle |
| County | King County |
| State | Washington |
| ZIP | 98199 |
| Coordinates | 47.66111, -122.44639 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 4 | Other Waste Biomass | Other Biomass Gas | 2.3 MW | Operating | 2012 |
| 5 | Other Waste Biomass | Other Biomass Gas | 2.3 MW | Operating | 2012 |
| NOₓ | 94 metric tons |
|---|
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | WECC |
|---|---|
| Balancing Authority | Seattle City Light |
Biomass plants burn wood, agricultural waste, or methane from landfills to generate steam and electricity. They are considered carbon-neutral over long timescales when fuel is sustainably sourced, but they produce particulate emissions similar to coal.