27th largest plant in Texas · 282nd nationally
Guadalupe Generating Station is a natural gas power plant in Texas with a nameplate capacity of 1,088 MW. It generates roughly 7.0M MWh per year — enough to power about 670,398 average U.S. homes.
Its capacity factor of 74% puts it in the middle range — running steadily but not full-time. At 895 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 (1,088 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 | Guadalupe Generating Station |
|---|---|
| Operator | Guadalupe Power Partners Lp |
| City | Marion |
| County | Guadalupe County |
| State | Texas |
| ZIP | 78124 |
| Coordinates | 29.62440, -98.14190 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| STG1 | Natural Gas Fired Combined Cycle | Natural Gas | 202 MW | Operating | 2000 |
| STG2 | Natural Gas Fired Combined Cycle | Natural Gas | 202 MW | Operating | 2000 |
| CTG1 | Natural Gas Fired Combined Cycle | Natural Gas | 171 MW | Operating | 2000 |
| CTG2 | Natural Gas Fired Combined Cycle | Natural Gas | 171 MW | Operating | 2000 |
| CTG3 | Natural Gas Fired Combined Cycle | Natural Gas | 171 MW | Operating | 2000 |
| CTG4 | Natural Gas Fired Combined Cycle | Natural Gas | 171 MW | Operating | 2000 |
| CTGP1 | Natural Gas Fired Combustion Turbine | Natural Gas | 160 MW | Cancelled | — |
| CTGP2 | Natural Gas Fired Combustion Turbine | Natural Gas | 160 MW | Cancelled | — |
| Owner | Location | Share |
|---|---|---|
| Guadalupe Peaking Energy Center, Llc | Marion, TX | 10000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 3.2M metric tons |
|---|---|
| SO₂ | 16 metric tons |
| NOₓ | 893 metric tons |
| CO₂ Rate | 895 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.