2nd largest plant in Oklahoma · 127th nationally
Seminole (Ok) is a natural gas power plant in Oklahoma with a nameplate capacity of 1,701 MW. It generates roughly 2.7M MWh per year — enough to power about 253,393 average U.S. homes.
Its capacity factor of 18% reflects intermittent or peaking operation. At 1315 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 (1,701 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 | Seminole (Ok) |
|---|---|
| Operator | Oklahoma Gas & Electric Co |
| City | Konowa |
| County | Seminole County |
| State | Oklahoma |
| ZIP | 74849 |
| Coordinates | 34.96645, -96.72580 |
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 Steam Turbine | Natural Gas | 567 MW | Operating | 1971 |
| 2 | Natural Gas Steam Turbine | Natural Gas | 567 MW | Operating | 1973 |
| 3 | Natural Gas Steam Turbine | Natural Gas | 567 MW | Operating | 1975 |
| GT1 | Natural Gas Fired Combustion Turbine | Natural Gas | 23.0 MW | Retired | 1971 |
| CO₂ | 1.8M metric tons |
|---|---|
| SO₂ | 9 metric tons |
| NOₓ | 2.0k metric tons |
| CO₂ Rate | 1315 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 | MRO |
|---|---|
| Balancing Authority | Southwest Power Pool |
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.