Nueces Bay
Natural gas power plant in Nueces County, Texas. 730.2 MW of nameplate capacity across 3 generators, operated by City of San Antonio - (TX).
Also known as Nueces Bay Power Plant · EIA plant 3441
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Key facts
- Capacity
- 730.2 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- July 1972First generator online
- Operator
- City of San Antonio - (TX)EIA operator ID 16604
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Nueces County, TX27.8194, −97.4192
- EIA plant ID
- 3441EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Nueces Bay produces
Free · EIA-923Net generation, 2025
1.82 TWh
1,821,343 MWh, final
Capacity factor, 2025
28.5%
2024: 28.7%
January to July 2026
976 GWh
Provisional
Range, 2015 to 2025
1.1–2.2
TWh a year. Low 2023, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 2,274,273 | Not reported | 12 of 12 |
| 2001 | 1,841,617 | Not reported | 12 of 12 |
| 2002 | 1,046,627 | Not reported | 12 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | 0 | Not reported | 7 of 12 |
| 2005 | 0 | Not reported | 12 of 12 |
| 2006 | 0 | Not reported | 1 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | 0 | Not reported | 7 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | 1,897,435 | Not reported | 10 of 12 |
| 2011 | 2,090,886 | 32.7% | 12 of 12 |
| 2012 | 2,498,474 | 39.0% | 12 of 12 |
| 2013 | 2,151,888 | Not reported | 12 of 12 |
| 2014 | 1,522,070 | 23.8% | 12 of 12 |
| 2015 | 1,553,835 | 24.3% | 12 of 12 |
| 2016 | 1,180,560 | 18.4% | 12 of 12 |
| 2017 | 1,122,885 | 17.6% | 12 of 12 |
| 2018 | 2,172,539 | 34.0% | 12 of 12 |
| 2019 | 1,624,574 | 25.4% | 12 of 12 |
| 2020 | 1,186,862 | 18.5% | 12 of 12 |
| 2021 | 1,440,690 | 22.5% | 12 of 12 |
| 2022 | 1,472,089 | 25.1% | 11 of 12 |
| 2023 | 1,066,438 | 16.7% | 12 of 12 |
| 2024 | 1,682,458 | 28.7% | 11 of 12 |
| 2025 | 1,821,343 | 28.5% | 12 of 12 |
| 2026 (provisional, partial year) | 976,319 | 26.3% | 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
847,668
US short tons. 2024: 781,078
SO₂, 2025
4
US short tons
NOx, 2025
94
US short tons
CO₂ per MWh, calculated
0.47 t
About 931 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (8, 9), matched to EIA plant 3441 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
99,263
million gallons
Consumption, 2024
Not reported
million gallons
Source
Nueces Bay
Surface, Saline. Once-through
Watershed stress
Moderate · 0.467
USGS SUI, HUC12 Nueces Bay
12 of 12 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 7 | Natural Gas Fired Combined Cycle | 351.0 | July 1972 |
| 8 | Natural Gas Fired Combined Cycle | 189.6 | March 2010 |
| 9 | Natural Gas Fired Combined Cycle | 189.6 | March 2010 |
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 City of San Antonio - (TX) 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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Power plants near Nueces Bay
More plants operated by City of San Antonio - (TX)
Questions about Nueces Bay
How much power does Nueces Bay produce?
Nueces Bay reported 1,821,343 MWh (1.82 TWh) of net generation in 2025, a 28.5% capacity factor on 730.2 MW of nameplate capacity. From January to July 2026 it reported 976 GWh, which is provisional.
Where is Nueces Bay?
Nueces Bay is in Nueces County, Texas, at 27.8194, −97.4192. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Nueces Bay?
EIA-860M for August 2026 lists City of San Antonio - (TX) as the operator (EIA operator ID 16604). The operator is not always the owner.
When did Nueces Bay start operating?
Its first generator began operating in July 1972, 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