John Twitty Energy Center
Coal power plant · Greene County, Missouri
Nameplate capacity
603 MW
Rank in Missouri
#11
of 139 plants
In service since
1976
June 1976
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- City Utilities of Springfield - (MO)
- County
- Greene County
- Generating units
- 4
- Share of state capacity
- 2.58%
- Rank among coal plants in Missouri
- #7 of 8
- EIA plant code
- 6195
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST2 | Conventional Steam Coal | 300 MW | 275 MW | 2011 | Operating |
| ST1 | Conventional Steam Coal | 194 MW | 184 MW | 1976 | Operating |
| GT1 | Natural Gas Fired Combustion Turbine | 57 MW | 52 MW | 1983 | Operating |
| GT2 | Natural Gas Fired Combustion Turbine | 52 MW | 52 MW | 1983 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Missouri
| State Line Combined Cycle | Natural gas | 691 MW |
| Dogwood Energy Facility | Natural gas | 655 MW |
| Northeast (MO) | Other | 540 MW |
| St Francis Energy Facility | Natural gas | 507 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 603 MW solar plant and a 603 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Missouri power plants · What Missouri actually generates