- Combustion
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
Alsey: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Alsey
Power plant · Gas, combustion turbine
Key facts
Power plant · Gas, combustion turbineran 2% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1999
- Net generation, 2025
- 34,675 MWh
- Grid
- 138 kV to Prairie Power, Inc (MISO)
- Location
- Scott County, Illinois
- Operated by
- Prairie Power IncSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 34,675
MWh - Fuel burned, 2025
- 409,076
MMBtu - Capacity factor, 2025
- 2.3
% - Heat rate, 2025
- 11,797
Btu/kWh
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 34,675 | 409,076 | 2.3% | 11,797 |
| 2024 | 38,728 | 455,268 | 2.5% | 11,756 |
| 2023 | 20,106 | 229,731 | 1.3% | 11,426 |
| 2022 | 77,028 | 87,063 | 5.1% | — |
| 2021 | 55,749 | 627,525 | 3.7% | 11,256 |
| 2020 | 29,764 | 357,571 | 2.0% | 12,014 |
| 2019 | 15,027 | 177,419 | 1.0% | 11,807 |
| 2018 | 21,066 | 238,885 | 1.4% | 11,340 |
| 2017 | 16,103 | 165,809 | 1.1% | 10,297 |
| 2016 | 7,713 | 135,912 | 0.5% | 17,621 |
| 2015 | 10,296 | 169,156 | 0.7% | 16,429 |
| 2014 | 2,417 | 38,973 | 0.2% | 16,124 |
| 2013 | 4,236 | 64,173 | 0.3% | 15,149 |
| 2012 | 8,790 | 135,949 | 0.6% | 15,466 |
| 2011 | 4,373 | 63,378 | 0.3% | 14,493 |
| 2010 | 5,014 | 73,261 | 0.3% | 14,611 |
| 2009 | 1,106 | 16,730 | 0.1% | 15,127 |
| 2008 | 12 | 155 | 0.0% | 12,917 |
| 2007 | 1,513 | 23,457 | 0.1% | 15,504 |
| 2006 | 4,850 | 72,411 | 0.3% | 14,930 |
| 2005 | 2,241 | 32,657 | 0.1% | 14,572 |
| 2004 | 1,131 | 22,546 | 0.1% | 19,935 |
| 2003 | 1,062 | 16,422 | 0.1% | 15,463 |
| 2002 | 1,381 | 21,004 | 0.1% | 15,209 |
| 2001 | 18,568 | 287,618 | 1.2% | 15,490 |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.