St Francis Energy Facility
Natural gas power plant · Dunklin County, Missouri
Nameplate capacity
507 MW
Rank in Missouri
#13
of 139 plants
In service since
1999
July 1999
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Associated Electric Coop, Inc
- County
- Dunklin County
- Generating units
- 2
- Share of state capacity
- 2.17%
- Rank among natural gas plants in Missouri
- #4 of 35
- EIA plant code
- 7604
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combined Cycle | 253 MW | 239 MW | 1999 | Operating |
| 2 | Natural Gas Fired Combined Cycle | 253 MW | 239 MW | 2001 | 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
| John Twitty Energy Center | Coal | 603 MW |
| Northeast (MO) | Other | 540 MW |
| Taum Sauk | Hydro | 408 MW |
| High Prairie Wind Farm | Wind | 400 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 507 MW solar plant and a 507 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