Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/55086
EIA plant 55086
Gregory · San Patricio · TX
Gregory Power Plant
Operated by Gregory Power Partners LLC
Published location
Where is Gregory Power Plant?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
27.889290, -97.258417
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the TX plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
129,563
23,530
3110,332
4128,635
5105,820
670,108
784,824
8134,759
9108,591
1013,848
1131,820
1219,233
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 29,563 |
| 2 | 3,530 |
| 3 | 110,332 |
| 4 | 128,635 |
| 5 | 105,820 |
| 6 | 70,108 |
| 7 | 84,824 |
| 8 | 134,759 |
| 9 | 108,591 |
| 10 | 13,848 |
| 11 | 31,820 |
| 12 | 19,233 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 29,563 MWh |
| 2 | 3,530 MWh |
| 3 | 110,332 MWh |
| 4 | 128,635 MWh |
| 5 | 105,820 MWh |
| 6 | 70,108 MWh |
| 7 | 84,824 MWh |
| 8 | 134,759 MWh |
| 9 | 108,591 MWh |
| 10 | 13,848 MWh |
| 11 | 31,820 MWh |
| 12 | 19,233 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| GT1A | Natural Gas Fired Combined Cycle | NG | 184.9 | OP |
| GT1B | Natural Gas Fired Combined Cycle | NG | 184.9 | OP |
| STG | Natural Gas Fired Combined Cycle | NG | 100 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
55086
Sector
IPP Non-CHP
Water source
San Patricio Municipality
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right Gregory Power Plant power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at Gregory Power Plant
Variation in the published months
Across 12 numeric monthly generation entries, 8 has the highest recorded value (134,759 MWh) and 2 the lowest (3,530 MWh). Their difference is 131,229 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 3 numeric rows displayed in this table, MW ranges from 100 (STG) to 184.9 (GT1A, GT1B). The difference is 84.9 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| GT1A | Natural Gas Fired Combined Cycle | 184.9 | 141.0 | 162.0 | 90.0 |
| GT1B | Natural Gas Fired Combined Cycle | 184.9 | 140.0 | 162.0 | 90.0 |
| STG | Natural Gas Fired Combined Cycle | 100.0 | 85.0 | 87.0 | 5.0 |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.