Hot Spring Generating Facility
Natural gas power plant in Hot Spring County, Arkansas. 714.8 MW of nameplate capacity across 3 generators, operated by Entergy Arkansas LLC.
Also known as Hot Spring Generating Station · EIA plant 55418
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Key facts
- Capacity
- 714.8 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- June 2002First generator online
- Operator
- Entergy Arkansas LLCEIA operator ID 814
- Grid
- MISOBalancing authority MISO
- Price nodes
- 4 MISO nodesResource nodes with prices
- Location
- Hot Spring County, AR34.2976, −92.8683
- EIA plant ID
- 55418EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Hot Spring Generating Facility produces
Free · EIA-923Net generation, 2025
2.53 TWh
2,526,218 MWh, final
Capacity factor, 2025
40.3%
2024: 32.4%
January to July 2026
1.49 TWh
Provisional
Range, 2015 to 2025
1.2–3.4
TWh a year. Low 2020, high 2017
| 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 | 927,505 | Not reported | 7 of 12 |
| 2003 | 1,098,352 | Not reported | 12 of 12 |
| 2004 | 605,016 | Not reported | 12 of 12 |
| 2005 | 646,934 | Not reported | 12 of 12 |
| 2006 | 1,019,797 | Not reported | 12 of 12 |
| 2007 | 1,034,448 | Not reported | 12 of 12 |
| 2008 | 1,351,550 | Not reported | 12 of 12 |
| 2009 | 1,706,650 | Not reported | 12 of 12 |
| 2010 | 813,835 | 13.0% | 12 of 12 |
| 2011 | 1,130,753 | 18.1% | 12 of 12 |
| 2012 | 513,634 | 8.2% | 12 of 12 |
| 2013 | 1,723,030 | Not reported | 12 of 12 |
| 2014 | 1,266,981 | 20.2% | 12 of 12 |
| 2015 | 2,498,565 | 39.9% | 12 of 12 |
| 2016 | 2,964,241 | 47.2% | 12 of 12 |
| 2017 | 3,448,624 | 55.1% | 12 of 12 |
| 2018 | 3,433,630 | 54.8% | 12 of 12 |
| 2019 | 2,937,705 | 46.9% | 12 of 12 |
| 2020 | 1,164,782 | 18.6% | 12 of 12 |
| 2021 | 2,542,869 | 40.6% | 12 of 12 |
| 2022 | 3,362,959 | 53.7% | 12 of 12 |
| 2023 | 2,172,773 | 34.7% | 12 of 12 |
| 2024 | 2,034,559 | 32.4% | 12 of 12 |
| 2025 | 2,526,218 | 40.3% | 12 of 12 |
| 2026 (provisional, partial year) | 1,490,472 | 41.0% | 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 · MISOEmissions
Free · EPA CAMPDCO₂, 2025
1.12M
US short tons. 2024: 903,404
SO₂, 2025
6
US short tons
NOx, 2025
114
US short tons
CO₂ per MWh, calculated
0.44 t
About 887 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (CT-1, CT-2), matched to EIA plant 55418 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
499
million gallons
Consumption, 2024
437
million gallons
Source
Ouachita River
Surface, Fresh. Induced-draft tower
Watershed stress
Low · 0.226
USGS SUI, HUC12 Black Branch
12 of 12 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CT1 | Natural Gas Fired Combined Cycle | 198.9 | June 2002 |
| CT2 | Natural Gas Fired Combined Cycle | 198.9 | June 2002 |
| ST1 | Natural Gas Fired Combined Cycle | 317.0 | June 2002 |
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 Entergy Arkansas 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 Hot Spring Generating Facility
How much power does Hot Spring Generating Facility produce?
Hot Spring Generating Facility reported 2,526,218 MWh (2.53 TWh) of net generation in 2025, a 40.3% capacity factor on 714.8 MW of nameplate capacity. From January to July 2026 it reported 1.49 TWh, which is provisional.
Where is Hot Spring Generating Facility?
Hot Spring Generating Facility is in Hot Spring County, Arkansas, at 34.2976, −92.8683. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Hot Spring Generating Facility?
EIA-860M for August 2026 lists Entergy Arkansas LLC as the operator (EIA operator ID 814). The operator is not always the owner.
When did Hot Spring Generating Facility start operating?
Its first generator began operating in June 2002, according to EIA-860M.
Does InfraMap have power prices for Hot Spring Generating Facility?
Yes. InfraMap has MISO day-ahead and real-time prices at 4 price nodes linked to Hot Spring Generating Facility, 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
- MISO 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