T H Wharton
Natural gas power plant in Harris County, Texas. 1,189.9 MW of nameplate capacity across 17 generators, operated by NRG Texas Power LLC.
Also known as T. H. Wharton Power Plant · Houston Light & Power - Wharton Station · T.H. Wharton · TH Wharton · EIA plant 3469
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1,189.9 MWNameplate
- Generators
- 17 operatingEIA-860M, August 2026
- Operating since
- July 1967First generator online
- Operator
- NRG Texas Power LLCEIA operator ID 54888
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- 2 ERCOT nodesResource nodes with prices
- Location
- Harris County, TX29.9417, −95.5306
- EIA plant ID
- 3469EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power T H Wharton produces
Free · EIA-923Net generation, 2025
799 GWh
798,837 MWh, final
Capacity factor, 2025
7.7%
2024: 6.4%
January to July 2026
295 GWh
Provisional
Range, 2015 to 2025
0.4–1.6
TWh a year. Low 2017, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 4,024,769 | Not reported | 12 of 12 |
| 2001 | 2,172,102 | Not reported | 12 of 12 |
| 2002 | 1,757,494 | Not reported | 12 of 12 |
| 2003 | 1,744,011 | Not reported | 12 of 12 |
| 2004 | 1,656,141 | Not reported | 12 of 12 |
| 2005 | 1,630,154 | Not reported | 12 of 12 |
| 2006 | 1,919,803 | Not reported | 12 of 12 |
| 2007 | 1,114,579 | Not reported | 11 of 12 |
| 2008 | 912,941 | Not reported | 12 of 12 |
| 2009 | 1,104,234 | Not reported | 12 of 12 |
| 2010 | 959,138 | Not reported | 12 of 12 |
| 2011 | 1,103,482 | Not reported | 8 of 12 |
| 2012 | 552,148 | 5.4% | 12 of 12 |
| 2013 | 262,502 | Not reported | 12 of 12 |
| 2014 | 282,736 | 2.7% | 12 of 12 |
| 2015 | 782,640 | 7.5% | 12 of 12 |
| 2016 | 490,796 | 4.7% | 12 of 12 |
| 2017 | 437,032 | 4.2% | 12 of 12 |
| 2018 | 572,456 | 5.5% | 12 of 12 |
| 2019 | 928,191 | 9.7% | 11 of 12 |
| 2020 | 833,180 | 8.0% | 12 of 12 |
| 2021 | 1,557,981 | 14.9% | 12 of 12 |
| 2022 | 1,525,356 | 14.6% | 12 of 12 |
| 2023 | 955,431 | 9.2% | 12 of 12 |
| 2024 | 671,810 | 6.4% | 12 of 12 |
| 2025 | 798,837 | 7.7% | 12 of 12 |
| 2026 (provisional, partial year) | 295,054 | 4.9% | 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 CAMPDCO₂, 2025
Not reported
US short tons. 2024: Not reported
SO₂, 2025
Not reported
US short tons
NOx, 2025
159
US short tons
6 of 14 EPA units reported CO₂ in 2025 (THW31, THW32, THW33, THW34, THW41, THW42, THW43, THW44, and others), matched to EIA plant 3469 through the EPA–EIA crosswalk.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
65
million gallons
Consumption, 2024
17
million gallons
Source
Wells
Ground, Fresh. Induced-draft tower
Watershed stress
Very low/none · 0.184
USGS SUI, HUC12 Cole Creek-Whiteoak Bayou
12 of 12 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 3 | Natural Gas Fired Combined Cycle | 113.1 | August 1974 |
| 4 | Natural Gas Fired Combined Cycle | 113.1 | August 1974 |
| 31 | Natural Gas Fired Combined Cycle | 54.0 | July 1972 |
| 32 | Natural Gas Fired Combined Cycle | 54.0 | July 1972 |
| 33 | Natural Gas Fired Combined Cycle | 54.0 | July 1972 |
| 34 | Natural Gas Fired Combined Cycle | 54.0 | July 1972 |
| 41 | Natural Gas Fired Combined Cycle | 54.0 | July 1972 |
| 42 | Natural Gas Fired Combined Cycle | 54.0 | July 1972 |
| 43 | Natural Gas Fired Combined Cycle | 56.7 | August 1974 |
| 44 | Natural Gas Fired Combined Cycle | 56.7 | August 1974 |
| 51 | Natural Gas Fired Combustion Turbine | 85.0 | November 1975 |
| 52 | Natural Gas Fired Combustion Turbine | 85.0 | November 1975 |
| 53 | Natural Gas Fired Combustion Turbine | 85.0 | November 1975 |
| 54 | Natural Gas Fired Combustion Turbine | 85.0 | November 1975 |
| 55 | Natural Gas Fired Combustion Turbine | 85.0 | November 1975 |
| 56 | Natural Gas Fired Combustion Turbine | 85.0 | November 1975 |
| GT1 | Natural Gas Fired Combustion Turbine | 16.3 | July 1967 |
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 NRG Texas Power 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 T H Wharton
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Questions about T H Wharton
How much power does T H Wharton produce?
T H Wharton reported 798,837 MWh (799 GWh) of net generation in 2025, a 7.7% capacity factor on 1,189.9 MW of nameplate capacity. From January to July 2026 it reported 295 GWh, which is provisional.
Where is T H Wharton?
T H Wharton is in Harris County, Texas, at 29.9417, −95.5306. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates T H Wharton?
EIA-860M for August 2026 lists NRG Texas Power LLC as the operator (EIA operator ID 54888). The operator is not always the owner.
When did T H Wharton start operating?
Its first generator began operating in July 1967, according to EIA-860M.
Does InfraMap have power prices for T H Wharton?
Yes. InfraMap has ERCOT day-ahead and real-time prices at 2 price nodes linked to T H Wharton, 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- 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