75th largest plant in Illinois · 1724th nationally
Alsey is a natural gas power plant in Illinois with a nameplate capacity of 173 MW. It generates roughly 20.1k MWh per year — enough to power about 1,914 average U.S. homes.
Its capacity factor of 1% reflects intermittent or peaking operation. At 811 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Alsey |
|---|---|
| Operator | Prairie Power, Inc |
| City | Alsey |
| County | Scott County |
| State | Illinois |
| ZIP | 62694 |
| Coordinates | 39.56977, -90.43602 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 6 | Natural Gas Fired Combustion Turbine | Natural Gas | 48.0 MW | Operating | 2016 |
| 1 | Natural Gas Fired Combustion Turbine | Natural Gas | 30.0 MW | Operating | 1999 |
| 2 | Natural Gas Fired Combustion Turbine | Natural Gas | 30.0 MW | Operating | 1999 |
| 5 | Natural Gas Fired Combustion Turbine | Natural Gas | 25.0 MW | Operating | 1999 |
| 3 | Natural Gas Fired Combustion Turbine | Natural Gas | 20.0 MW | Operating | 1999 |
| 4 | Natural Gas Fired Combustion Turbine | Natural Gas | 20.0 MW | Operating | 1999 |
| CO₂ | 8.2k metric tons |
|---|---|
| NOₓ | 11 metric tons |
| CO₂ Rate | 811 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.