7th largest plant in Wyoming · 897th nationally
Wyodak is a coal power plant in Wyoming with a nameplate capacity of 362 MW. It generates roughly 1.8M MWh per year — enough to power about 169,189 average U.S. homes.
Its capacity factor of 56% puts it in the middle range — running steadily but not full-time. At 2749 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 (362 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 | Wyodak |
|---|---|
| Operator | Pacificorp |
| City | Gillette |
| County | Campbell County |
| State | Wyoming |
| ZIP | 82716 |
| Coordinates | 44.29013, -105.38148 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | Subbituminous Coal | 362 MW | Operating | 1978 |
| Owner | Location | Share |
|---|---|---|
| Pacificorp | Portland, OR | 8000.0% |
| Black Hills Power, Inc. | Rapid City, SD | 2000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 2.4M metric tons |
|---|---|
| SO₂ | 1.8k metric tons |
| NOₓ | 2.7k metric tons |
| CO₂ Rate | 2749 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 | Pacificorp - East |
Coal plants burn pulverized coal to boil water and spin steam turbines. They emit substantial CO₂, SO₂, and NOₓ along with mercury and particulate matter. Modern units include scrubbers and selective catalytic reduction; older units are increasingly being retired or converted to natural gas as economics shift.