Green Power 2
Natural gas power plant in Galveston County, Texas. 611 MW of nameplate capacity across 4 generators, operated by South Houston Green Power LLC.
Also known as Green Power 2 Power Plant · South Houston Green Power · EIA plant 55470
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Key facts
- Capacity
- 611 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- December 2003First generator online
- Operator
- South Houston Green Power LLCEIA operator ID 17566
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Galveston County, TX29.3781, −94.9328
- EIA plant ID
- 55470EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Green Power 2 produces
Free · EIA-923Net generation, 2025
3.86 TWh
3,861,166 MWh, final
Capacity factor, 2025
51.2%
2024: 51.3%
January to July 2026
2.45 TWh
Provisional
Range, 2015 to 2025
3.8–4.5
TWh a year. Low 2023, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 192,826 | Not reported | 12 of 12 |
| 2004 | 3,246,398 | Not reported | 12 of 12 |
| 2005 | 2,841,224 | Not reported | 12 of 12 |
| 2006 | 2,246,864 | Not reported | 12 of 12 |
| 2007 | 3,253,226 | Not reported | 12 of 12 |
| 2008 | 3,268,791 | Not reported | 12 of 12 |
| 2009 | 3,784,171 | Not reported | 12 of 12 |
| 2010 | 4,054,531 | 53.8% | 12 of 12 |
| 2011 | 3,669,103 | 48.6% | 12 of 12 |
| 2012 | 4,514,338 | 59.7% | 12 of 12 |
| 2013 | 3,952,410 | Not reported | 12 of 12 |
| 2014 | 4,203,597 | 55.7% | 12 of 12 |
| 2015 | 4,356,981 | 57.8% | 12 of 12 |
| 2016 | 4,474,580 | 59.2% | 12 of 12 |
| 2017 | 4,416,905 | 58.6% | 12 of 12 |
| 2018 | 3,900,260 | 51.7% | 12 of 12 |
| 2019 | 4,010,581 | 53.2% | 12 of 12 |
| 2020 | 4,034,336 | 53.3% | 12 of 12 |
| 2021 | 4,131,690 | 54.8% | 12 of 12 |
| 2022 | 3,786,786 | 50.2% | 12 of 12 |
| 2023 | 3,784,842 | 50.2% | 12 of 12 |
| 2024 | 3,879,135 | 51.3% | 12 of 12 |
| 2025 | 3,861,166 | 51.2% | 12 of 12 |
| 2026 (provisional, partial year) | 2,450,361 | 55.9% | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
2.97M
US short tons. 2024: 2.94M
SO₂, 2025
63
US short tons
NOx, 2025
282
US short tons
CO₂ per MWh, calculated
0.77 t
About 1,539 lb per MWh
3 of 3 EPA units reported CO₂ in 2025 (EPN801, EPN802, EPN803), matched to EIA plant 55470 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
Not reported
million gallons as reported; not used, see note
Consumption, 2024
Not reported
million gallons
Source
Gulf Coast Water Authority
Surface, Fresh. Induced-draft tower
Watershed stress
Very low/none · 0.190
USGS SUI, HUC12 Dickinson Bayou-Frontal Gulf of Mexico
0 of 12 cooling months report withdrawal. SUI of the HUC12 containing the plant. Consumption is below 5% of a large reported withdrawal, so the withdrawal is not used. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| ST1 | Natural Gas Fired Combined Cycle | 110.0 | December 2003 |
| TR1 | Natural Gas Fired Combined Cycle | 167.0 | December 2003 |
| TR2 | Natural Gas Fired Combined Cycle | 167.0 | December 2003 |
| TR3 | Natural Gas Fired Combined Cycle | 167.0 | December 2003 |
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 South Houston Green 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 Green Power 2
More plants operated by South Houston Green Power LLC
Questions about Green Power 2
How much power does Green Power 2 produce?
Green Power 2 reported 3,861,166 MWh (3.86 TWh) of net generation in 2025, a 51.2% capacity factor on 611 MW of nameplate capacity. From January to July 2026 it reported 2.45 TWh, which is provisional.
Where is Green Power 2?
Green Power 2 is in Galveston County, Texas, at 29.3781, −94.9328. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Green Power 2?
EIA-860M for August 2026 lists South Houston Green Power LLC as the operator (EIA operator ID 17566). The operator is not always the owner.
When did Green Power 2 start operating?
Its first generator began operating in December 2003, 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