Major Oak Power
Coal power plant in Robertson County, Texas. 349.2 MW of nameplate capacity across 2 generators, operated by Major Oak Power, LLC.
Also known as Twin Oaks Power Station · TNP One · EIA plant 7030
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Key facts
- Capacity
- 349.2 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- September 1990First generator online
- Operator
- Major Oak Power, LLCEIA operator ID 56598
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- 2 ERCOT nodesResource nodes with prices
- Location
- Robertson County, TX31.0919, −96.6950
- EIA plant ID
- 7030EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Major Oak Power produces
Free · EIA-923Net generation, 2025
2.23 TWh
2,230,399 MWh, final
Capacity factor, 2025
72.9%
2024: 67.2%
January to July 2026
1.24 TWh
Provisional
Range, 2015 to 2025
2.1–2.5
TWh a year. Low 2024, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 2,215,215 | Not reported | 12 of 12 |
| 2001 | 2,349,700 | Not reported | 12 of 12 |
| 2002 | 2,472,216 | Not reported | 12 of 12 |
| 2003 | 2,475,295 | Not reported | 12 of 12 |
| 2004 | 2,342,321 | Not reported | 12 of 12 |
| 2005 | 2,490,416 | Not reported | 12 of 12 |
| 2006 | 2,351,664 | Not reported | 12 of 12 |
| 2007 | 2,316,023 | Not reported | 12 of 12 |
| 2008 | 2,411,517 | Not reported | 12 of 12 |
| 2009 | 2,180,212 | Not reported | 12 of 12 |
| 2010 | 2,386,683 | 78.0% | 12 of 12 |
| 2011 | 2,286,056 | 74.7% | 12 of 12 |
| 2012 | 1,513,736 | 49.3% | 12 of 12 |
| 2013 | 2,068,248 | 67.6% | 12 of 12 |
| 2014 | 1,659,998 | 80.8% | 8 of 12 |
| 2015 | 2,434,413 | 79.6% | 12 of 12 |
| 2016 | 2,467,589 | 80.4% | 12 of 12 |
| 2017 | 2,383,547 | 77.9% | 12 of 12 |
| 2018 | 2,457,779 | 80.3% | 12 of 12 |
| 2019 | 2,413,924 | 78.9% | 12 of 12 |
| 2020 | 2,385,515 | 77.8% | 12 of 12 |
| 2021 | 2,337,748 | 76.4% | 12 of 12 |
| 2022 | 2,442,932 | 79.9% | 12 of 12 |
| 2023 | 2,319,416 | 75.8% | 12 of 12 |
| 2024 | 2,061,101 | 67.2% | 12 of 12 |
| 2025 | 2,230,399 | 72.9% | 12 of 12 |
| 2026 (provisional, partial year) | 1,236,946 | 69.6% | 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 CAMPDCO₂, 2025
2.82M
US short tons. 2024: 2.61M
SO₂, 2025
1,966
US short tons
NOx, 2025
1,992
US short tons
CO₂ per MWh, calculated
1.26 t
About 2,527 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (U1, U2), matched to EIA plant 7030 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
1,401
million gallons
Consumption, 2024
1,073
million gallons
Source
Wells
Ground, Fresh. Induced-draft tower
Watershed stress
Moderate · 0.521
USGS SUI, HUC12 South Walnut Creek
24 of 24 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 |
|---|---|---|---|
| 1 | Conventional Steam Coal | 174.6 | September 1990 |
| 2 | Conventional Steam Coal | 174.6 | October 1991 |
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 Major Oak 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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Questions about Major Oak Power
How much power does Major Oak Power produce?
Major Oak Power reported 2,230,399 MWh (2.23 TWh) of net generation in 2025, a 72.9% capacity factor on 349.2 MW of nameplate capacity. From January to July 2026 it reported 1.24 TWh, which is provisional.
Where is Major Oak Power?
Major Oak Power is in Robertson County, Texas, at 31.0919, −96.6950. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Major Oak Power?
EIA-860M for August 2026 lists Major Oak Power, LLC as the operator (EIA operator ID 56598). The operator is not always the owner.
When did Major Oak Power start operating?
Its first generator began operating in September 1990, according to EIA-860M.
Does InfraMap have power prices for Major Oak Power?
Yes. InfraMap has ERCOT day-ahead and real-time prices at 2 price nodes linked to Major Oak Power, 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