16th largest plant in Washington · 629th nationally
Chehalis Generating Facility is a natural gas power plant in Washington with a nameplate capacity of 593 MW. It generates roughly 2.2M MWh per year — enough to power about 213,238 average U.S. homes.
Its capacity factor of 43% puts it in the middle range — running steadily but not full-time. At 899 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (593 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Chehalis Generating Facility |
|---|---|
| Operator | Pacificorp |
| City | Chehalis |
| County | Lewis County |
| State | Washington |
| ZIP | 98532 |
| Coordinates | 46.62250, -122.91310 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| CT1 | Natural Gas Fired Combined Cycle | Natural Gas | 199 MW | Operating | 2003 |
| CT2 | Natural Gas Fired Combined Cycle | Natural Gas | 199 MW | Operating | 2003 |
| CA | Natural Gas Fired Combined Cycle | Natural Gas | 196 MW | Operating | 2003 |
| CO₂ | 1.0M metric tons |
|---|---|
| SO₂ | 11 metric tons |
| NOₓ | 79 metric tons |
| CO₂ Rate | 899 lb/MWh |
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 | Bonneville Power Administration |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.