Johnson County
Natural gas power plant in Johnson County, Texas. 282.6 MW of nameplate capacity across 2 generators, operated by Johnson County Power LLC.
Also known as Johnson County Power Plant · EIA plant 54817
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Key facts
- Capacity
- 282.6 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- September 1996First generator online
- Operator
- Johnson County Power LLCEIA operator ID 66083
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Johnson County, TX32.3994, −97.4078
- EIA plant ID
- 54817EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Johnson County produces
Free · EIA-923Net generation, 2025
1.27 TWh
1,266,432 MWh, final
Capacity factor, 2025
Not reported
2024: 53.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.4–1.3
TWh a year. Low 2017, high 2024
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,560,672 | Not reported | 12 of 12 |
| 2001 | 1,644,687 | Not reported | 12 of 12 |
| 2002 | 1,386,194 | Not reported | 12 of 12 |
| 2003 | 1,637,368 | Not reported | 12 of 12 |
| 2004 | 1,722,967 | Not reported | 12 of 12 |
| 2005 | 529,539 | Not reported | 12 of 12 |
| 2006 | 461,095 | Not reported | 12 of 12 |
| 2007 | 1,291,123 | Not reported | 12 of 12 |
| 2008 | 1,420,776 | Not reported | 12 of 12 |
| 2009 | 1,208,557 | Not reported | 12 of 12 |
| 2010 | 1,403,951 | 56.7% | 12 of 12 |
| 2011 | 1,216,708 | 49.1% | 12 of 12 |
| 2012 | 816,529 | 35.8% | 11 of 12 |
| 2013 | 772,941 | Not reported | 12 of 12 |
| 2014 | 732,504 | 29.6% | 12 of 12 |
| 2015 | 602,430 | 24.3% | 12 of 12 |
| 2016 | 424,044 | 17.1% | 12 of 12 |
| 2017 | 382,526 | 15.5% | 12 of 12 |
| 2018 | 447,947 | 18.1% | 12 of 12 |
| 2019 | 790,647 | 31.9% | 12 of 12 |
| 2020 | 899,874 | 36.3% | 12 of 12 |
| 2021 | 764,224 | 30.9% | 12 of 12 |
| 2022 | 1,081,371 | 43.7% | 12 of 12 |
| 2023 | 1,105,626 | 44.7% | 12 of 12 |
| 2024 | 1,316,507 | 53.0% | 12 of 12 |
| 2025 | 1,266,432 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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
585,440
US short tons. 2024: 594,269
SO₂, 2025
3
US short tons
NOx, 2025
162
US short tons
CO₂ per MWh, calculated
0.46 t
About 925 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (EAST), matched to EIA plant 54817 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
395
million gallons
Consumption, 2024
326
million gallons
Source
Municipal
Other, Reclaimed. Induced-draft tower
Watershed stress
Low · 0.379
USGS SUI, HUC12 West Buffalo Creek-Buffalo Creek
12 of 12 cooling months report withdrawal. Reclaimed water or plant effluent; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GT-1 | Natural Gas Fired Combined Cycle | 178.2 | September 1996 |
| ST-1 | Natural Gas Fired Combined Cycle | 104.4 | November 1996 |
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 Johnson County 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 Johnson County
Questions about Johnson County
How much power does Johnson County produce?
Johnson County reported 1,266,432 MWh (1.27 TWh) of net generation in 2025.
Where is Johnson County?
Johnson County is in Johnson County, Texas, at 32.3994, −97.4078. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Johnson County?
EIA-860M for August 2026 lists Johnson County Power LLC as the operator (EIA operator ID 66083). The operator is not always the owner.
When did Johnson County start operating?
Its first generator began operating in September 1996, 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