17th largest plant in Pennsylvania · 266th nationally
Tenaska Westmoreland Generating Station is a natural gas power plant in Pennsylvania with a nameplate capacity of 1,134 MW. It generates roughly 6.7M MWh per year — enough to power about 634,333 average U.S. homes.
Its capacity factor of 67% puts it in the middle range — running steadily but not full-time. At 799 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (1,134 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 | Tenaska Westmoreland Generating Station |
|---|---|
| Operator | Tenaska Pennsylvania Partners, Llc |
| City | Smithton |
| County | Westmoreland County |
| State | Pennsylvania |
| ZIP | 15479 |
| Coordinates | 40.17525, -79.69666 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| STG1 | Natural Gas Fired Combined Cycle | Natural Gas | 394 MW | Operating | 2018 |
| CTG1 | Natural Gas Fired Combined Cycle | Natural Gas | 370 MW | Operating | 2018 |
| CTG2 | Natural Gas Fired Combined Cycle | Natural Gas | 370 MW | Operating | 2018 |
| Owner | Location | Share |
|---|---|---|
| Dgc Westmoreland, Llc | Omaha, NE | 5000.0% |
| J-Power Westmoreland, Llc | Omaha, NE | 2500.0% |
| Tenaska Pennsylvania Holdings, Llc | Omaha, NE | 2475.0% |
| Tenaska Pennsylvania I, Llc | Omaha, NE | 25.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 2.7M metric tons |
|---|---|
| SO₂ | 14 metric tons |
| NOₓ | 110 metric tons |
| CO₂ Rate | 799 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 | RFC |
|---|---|
| Balancing Authority | Pjm Interconnection, Llc |
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.