Nameplate capacity
410 MW
Rank in Texas
#129
of 1,095 plants
In service since
1982
January 1982
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- San Miguel Electric Coop, Inc
- County
- Atascosa County
- Generating units
- 1
- Share of state capacity
- 0.20%
- Rank among coal plants in Texas
- #11 of 12
- EIA plant code
- 6183
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | 410 MW | 391 MW | 1982 | 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 Texas
| Mesquite Star | Wind | 419 MW |
| Ennis Power Company LLC | Natural gas | 418 MW |
| Ash Creek Solar | Solar | 409 MW |
| SAHARA BESS (SOHO BESS) | Battery storage | 409 MW |
About this data
From EIA’s inventory of operable generators, August 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 410 MW solar plant and a 410 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 Texas power plants · What Texas actually generates