Guadalupe Generating Station
Natural gas power plant in Guadalupe County, Texas. 1,088.2 MW of nameplate capacity across 6 generators, operated by Guadalupe Power Partners LP.
Also known as Guadalupe Power Partners Generating Station · EIA plant 55153
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Key facts
- Capacity
- 1,088.2 MWNameplate
- Generators
- 6 operatingEIA-860M, August 2026
- Operating since
- October 2000First generator online
- Operator
- Guadalupe Power Partners LPEIA operator ID 57045
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Guadalupe County, TX29.6244, −98.1419
- EIA plant ID
- 55153EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Guadalupe produces
Free · EIA-923Net generation, 2025
5.71 TWh
5,712,188 MWh, final
Capacity factor, 2025
59.9%
2024: 67.5%
January to July 2026
3.30 TWh
Provisional
Range, 2015 to 2025
4.8–7.0
TWh a year. Low 2021, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 102,674 | Not reported | 12 of 12 |
| 2001 | 3,856,524 | Not reported | 12 of 12 |
| 2002 | 3,804,525 | Not reported | 12 of 12 |
| 2003 | 3,936,274 | Not reported | 12 of 12 |
| 2004 | 4,321,405 | Not reported | 12 of 12 |
| 2005 | 4,474,832 | Not reported | 12 of 12 |
| 2006 | 4,436,855 | Not reported | 12 of 12 |
| 2007 | 4,193,692 | Not reported | 12 of 12 |
| 2008 | 5,032,562 | Not reported | 12 of 12 |
| 2009 | 4,489,165 | Not reported | 12 of 12 |
| 2010 | 4,340,171 | 43.4% | 12 of 12 |
| 2011 | 2,126,806 | 21.3% | 12 of 12 |
| 2012 | 2,290,063 | Not reported | 12 of 12 |
| 2013 | 3,310,652 | Not reported | 12 of 12 |
| 2014 | 4,451,509 | Not reported | 12 of 12 |
| 2015 | 6,007,216 | 63.0% | 12 of 12 |
| 2016 | 5,283,392 | 55.3% | 12 of 12 |
| 2017 | 5,018,255 | 52.6% | 12 of 12 |
| 2018 | 5,527,011 | 58.0% | 12 of 12 |
| 2019 | 5,503,121 | 57.7% | 12 of 12 |
| 2020 | 6,080,649 | Not reported | 12 of 12 |
| 2021 | 4,816,753 | Not reported | 12 of 12 |
| 2022 | 6,315,390 | 66.3% | 12 of 12 |
| 2023 | 7,039,183 | 73.8% | 12 of 12 |
| 2024 | 6,450,394 | 67.5% | 12 of 12 |
| 2025 | 5,712,188 | 59.9% | 12 of 12 |
| 2026 (provisional, partial year) | 3,303,941 | 59.7% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
2.58M
US short tons. 2024: 2.91M
SO₂, 2025
13
US short tons
NOx, 2025
689
US short tons
CO₂ per MWh, calculated
0.45 t
About 902 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (CTG-1, CTG-2, CTG-3, CTG-4), matched to EIA plant 55153 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
1,341
million gallons
Consumption, 2024
1,341
million gallons
Source
Lake Dunlap
Surface, Fresh. Induced-draft tower
Watershed stress
Severe · 0.815
USGS SUI, HUC12 Upper Santa Clara Creek
24 of 24 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 171.1 | October 2000 |
| CTG2 | Natural Gas Fired Combined Cycle | 171.1 | October 2000 |
| CTG3 | Natural Gas Fired Combined Cycle | 171.1 | December 2000 |
| CTG4 | Natural Gas Fired Combined Cycle | 171.1 | December 2000 |
| STG1 | Natural Gas Fired Combined Cycle | 201.9 | October 2000 |
| STG2 | Natural Gas Fired Combined Cycle | 201.9 | October 2000 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Guadalupe Power Partners LP as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Guadalupe
How much power does Guadalupe Generating Station produce?
Guadalupe Generating Station reported 5,712,188 MWh (5.71 TWh) of net generation in 2025, a 59.9% capacity factor on 1,088.2 MW of nameplate capacity. From January to July 2026 it reported 3.30 TWh, which is provisional.
Where is Guadalupe Generating Station?
Guadalupe Generating Station is in Guadalupe County, Texas, at 29.6244, −98.1419. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Guadalupe Generating Station?
EIA-860M for August 2026 lists Guadalupe Power Partners LP as the operator (EIA operator ID 57045). The operator is not always the owner.
When did Guadalupe Generating Station start operating?
Its first generator began operating in October 2000, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page