84th largest plant in Washington · 4410th nationally
Boulder Park is a natural gas power plant in Washington with a nameplate capacity of 24.6 MW. It generates roughly 63.9k MWh per year — enough to power about 6,086 average U.S. homes.
Its capacity factor of 30% reflects intermittent or peaking operation. At 1077 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Boulder Park |
|---|---|
| Operator | Avista Corp |
| City | Spokane |
| County | Spokane County |
| State | Washington |
| ZIP | 99027 |
| Coordinates | 47.69722, -117.14722 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | Natural Gas | 4.1 MW | Operating | 2002 |
| 2 | Natural Gas Internal Combustion Engine | Natural Gas | 4.1 MW | Operating | 2002 |
| 3 | Natural Gas Internal Combustion Engine | Natural Gas | 4.1 MW | Operating | 2002 |
| 4 | Natural Gas Internal Combustion Engine | Natural Gas | 4.1 MW | Operating | 2002 |
| 5 | Natural Gas Internal Combustion Engine | Natural Gas | 4.1 MW | Operating | 2002 |
| 6 | Natural Gas Internal Combustion Engine | Natural Gas | 4.1 MW | Operating | 2002 |
| CO₂ | 34.4k metric tons |
|---|---|
| SO₂ | 1 metric tons |
| NOₓ | 799 metric tons |
| CO₂ Rate | 1077 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 | Avista Corporation |
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.