Nameplate capacity
1,099 MW
Rank in Missouri
#6
of 139 plants
In service since
1967
May 1967
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- Union Electric Co - (MO)
- County
- St Charles County
- Generating units
- 2
- Share of state capacity
- 4.70%
- Rank among coal plants in Missouri
- #5 of 8
- EIA plant code
- 2107
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | 550 MW | 487 MW | 1967 | Operating |
| 2 | Conventional Steam Coal | 550 MW | 487 MW | 1968 | 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
| Callaway | Nuclear | 1,236 MW |
| Thomas Hill | Coal | 1,182 MW |
| Hawthorn | Coal | 1,046 MW |
| Audrain Generating Station | Natural gas | 814 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 1,099 MW solar plant and a 1,099 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