118th largest plant in Illinois · 3275th nationally
Primient Decatur Plant Cogen is a natural gas power plant in Illinois with a nameplate capacity of 64.8 MW. It generates roughly 300.7k MWh per year — enough to power about 28,635 average U.S. homes.
Its capacity factor of 53% puts it in the middle range — running steadily but not full-time. At 626 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 (64.8 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 | Primient Decatur Plant Cogen |
|---|---|
| Operator | Primary Products Ingredients Americas, Llc |
| City | Decatur |
| County | Macon County |
| State | Illinois |
| ZIP | 62525 |
| Coordinates | 39.84919, -88.93194 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN1 | Natural Gas Steam Turbine | Natural Gas | 64.8 MW | Operating | 1989 |
| CO₂ | 94.1k metric tons |
|---|---|
| NOₓ | 131 metric tons |
| CO₂ Rate | 626 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 | SERC |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
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.