113th largest plant in Texas · 809th nationally
Gregory Power Plant is a natural gas power plant in Texas with a nameplate capacity of 432 MW. It generates roughly 480.6k MWh per year — enough to power about 45,769 average U.S. homes.
Its capacity factor of 13% reflects intermittent or peaking operation. At 1127 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (432 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Gregory Power Plant |
|---|---|
| Operator | Gregory Power Partners Llc |
| City | Gregory |
| County | San Patricio County |
| State | Texas |
| ZIP | 78359 |
| Coordinates | 27.88929, -97.25842 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GT1A | Natural Gas Fired Combined Cycle | Natural Gas | 185 MW | Operating | 2000 |
| GT1B | Natural Gas Fired Combined Cycle | Natural Gas | 185 MW | Operating | 2000 |
| STG | Natural Gas Fired Combined Cycle | Natural Gas | 100 MW | Operating | 2000 |
| Owner | Location | Share |
|---|---|---|
| Gregory Power Holdings, Llc | Houston, TX | 10000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 270.9k metric tons |
|---|---|
| SO₂ | 1 metric tons |
| NOₓ | 65 metric tons |
| CO₂ Rate | 1127 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | TRE |
|---|---|
| Balancing Authority | Electric Reliability Council Of Texas, Inc. |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.