Barney M Davis
Natural gas power plant · Nueces County, Texas
Nameplate capacity
1,082 MW
Rank in Texas
#29
of 1,071 plants
In service since
1974
May 1974
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Steam Turbine
- Operator
- City of San Antonio - (TX)
- County
- Nueces County
- Generating units
- 4
- Share of state capacity
- 0.54%
- Rank among natural gas plants in Texas
- #19 of 310
- EIA plant code
- 4939
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | 352 MW | 292 MW | 1974 | Operating |
| 2 | Natural Gas Fired Combined Cycle | 351 MW | 319 MW | 1976 | Operating |
| 3 | Natural Gas Fired Combined Cycle | 190 MW | 157 MW | 2010 | Operating |
| 4 | Natural Gas Fired Combined Cycle | 190 MW | 157 MW | 2010 | 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
| Rio Nogales Power Project | Natural gas | 1,108 MW |
| Guadalupe Generating Station | Natural gas | 1,088 MW |
| Harrington | Natural gas | 1,080 MW |
| Freestone Energy Center | Natural gas | 1,036 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 1,082 MW solar plant and a 1,082 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