Comanche Peak
Nuclear power plant in Somervell County, Texas. 2,430 MW of nameplate capacity across 2 generators, operated by Luminant Generation Company LLC.
Also known as Comanche Peak Nuclear Power Plant · EIA plant 6145
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2,430 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- August 1990First generator online
- Operator
- Luminant Generation Company LLCEIA operator ID 55983
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- 2 ERCOT nodesResource nodes with prices
- Location
- Somervell County, TX32.2984, −97.7855
- EIA plant ID
- 6145EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Comanche Peak produces
Free · EIA-923Net generation, 2025
20.1 TWh
20,058,688 MWh, final
Capacity factor, 2025
94.2%
2024: 92.2%
January to July 2026
11.5 TWh
Provisional
Range, 2015 to 2025
17.0–20.5
TWh a year. Low 2017, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 18,456,868 | Not reported | 12 of 12 |
| 2001 | 18,322,265 | Not reported | 12 of 12 |
| 2002 | 16,568,402 | Not reported | 12 of 12 |
| 2003 | 17,748,943 | Not reported | 12 of 12 |
| 2004 | 19,063,405 | Not reported | 12 of 12 |
| 2005 | 18,443,200 | Not reported | 12 of 12 |
| 2006 | 19,896,009 | Not reported | 12 of 12 |
| 2007 | 18,845,747 | Not reported | 12 of 12 |
| 2008 | 19,234,621 | Not reported | 12 of 12 |
| 2009 | 20,141,469 | Not reported | 12 of 12 |
| 2010 | 20,208,467 | 94.9% | 12 of 12 |
| 2011 | 19,282,561 | 90.6% | 12 of 12 |
| 2012 | 19,896,924 | 93.2% | 12 of 12 |
| 2013 | 20,487,140 | 96.2% | 12 of 12 |
| 2014 | 18,635,776 | 87.5% | 12 of 12 |
| 2015 | 19,954,124 | 93.7% | 12 of 12 |
| 2016 | 20,385,142 | 95.5% | 12 of 12 |
| 2017 | 16,999,925 | 79.9% | 12 of 12 |
| 2018 | 20,498,107 | 96.3% | 12 of 12 |
| 2019 | 19,304,710 | 90.7% | 12 of 12 |
| 2020 | 19,479,948 | 91.3% | 12 of 12 |
| 2021 | 19,356,253 | 90.9% | 12 of 12 |
| 2022 | 19,687,070 | 92.5% | 12 of 12 |
| 2023 | 18,892,726 | 88.8% | 12 of 12 |
| 2024 | 19,686,655 | 92.2% | 12 of 12 |
| 2025 | 20,058,688 | 94.2% | 12 of 12 |
| 2026 (provisional, partial year) | 11,450,125 | 92.6% | 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 account · ERCOTEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
1,100,638
million gallons
Consumption, 2024
6,416
million gallons
Source
Squaw Creek Reservoir
Surface, Fresh. Recirculating with cooling pond
Watershed stress
Severe · 0.863
USGS SUI, HUC12 Comanche Creek
12 of 12 cooling months report withdrawal. SUI of the HUC12 containing the plant. Cooling-pond plants report water circulated through the pond as withdrawal, so withdrawal is far above consumption. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Nuclear | 1,215.0 | August 1990 |
| 2 | Nuclear | 1,215.0 | April 1993 |
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 Luminant Generation Company LLC 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 Comanche Peak
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Questions about Comanche Peak
How much power does Comanche Peak produce?
Comanche Peak reported 20,058,688 MWh (20.1 TWh) of net generation in 2025, a 94.2% capacity factor on 2,430 MW of nameplate capacity. From January to July 2026 it reported 11.5 TWh, which is provisional.
Where is Comanche Peak?
Comanche Peak is in Somervell County, Texas, at 32.2984, −97.7855. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Comanche Peak?
EIA-860M for August 2026 lists Luminant Generation Company LLC as the operator (EIA operator ID 55983). The operator is not always the owner.
When did Comanche Peak start operating?
Its first generator began operating in August 1990, according to EIA-860M.
Does InfraMap have power prices for Comanche Peak?
Yes. InfraMap has ERCOT day-ahead and real-time prices at 2 price nodes linked to Comanche Peak, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- ERCOT day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- 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