Power plants in Arkansas
Arkansas has 120 power plants of 1 MW or more in the 2025 EIA-860 data, with 18.8 GW of nameplate capacity, the 29th-largest total among the 50 states and DC. Natural gas accounts for 38% of that capacity. The biggest single site is Union Power Station at 2,428 MW. Units that came online from 2020 to 2025 add 2,589 MW, led by solar at 94%. Units retired since 2016 at plants still operating total 67.4 MW, most of it biomass and waste.
- Natural gas7,130 MW38%
- Coal5,487 MW29%
- Solar2,547 MW14%
- Nuclear1,845 MW9.8%
- Hydroelectric1,321 MW7.0%
- Biomass and waste278 MW1.5%
- Wind144 MW0.8%
- Pumped-storage hydro30 MW0.2%
- Battery storage28.2 MW0.1%
- Oil and petroleum9.1 MW0.0%
What is running, by the decade it came online
NuclearCoalNatural gasOil and petroleumHydroelectricPumped-storage hydroWindSolarBattery storageBiomass and waste
Columns above the line show capacity still operating in 2025, stacked by fuel. Below the line: capacity retired in each decade at plants that still operate.
The 25 largest plants
| Rank | Plant | Runs on | Capacity | First unit | Operator |
|---|---|---|---|---|---|
| 1 | Union Power Station | Natural gas | 2,428 MW | 2003 | Entergy Arkansas LLC |
| 2 | Arkansas Nuclear One | Nuclear | 1,845 MW | 1974 | Entergy Arkansas LLC |
| 3 | Independence Steam Electric Station | Coal | 1,800 MW | 1983 | Entergy Arkansas LLC |
| 4 | White Bluff | Coal | 1,800 MW | 1980 | Entergy Arkansas LLC |
| 5 | Magnet Cove | Natural gas | 746 MW | 2005 | Arkansas Electric Coop Corp |
| 6 | Plum Point Energy Station | Coal | 720 MW | 2010 | NRG Energy Services - Plum Point |
| 7 | Hot Spring Generating Facility | Natural gas | 715 MW | 2002 | Entergy Arkansas LLC |
| 8 | Dell Power Station | Natural gas | 679 MW | 2007 | Associated Electric Coop, Inc |
| 9 | John W Turk Jr Power Plant | Coal | 609 MW | 2012 | Southwestern Electric Power Co |
| 10 | Harry L. Oswald | Natural gas | 600 MW | 2002 | Arkansas Electric Coop Corp |
| 11 | Flint Creek | Coal | 558 MW | 1978 | Southwestern Electric Power Co |
| 12 | Lake Catherine | Natural gas | 552 MW | 1970 | Entergy Arkansas LLC |
| 13 | Harry D Mattison Gas Plant | Natural gas | 349 MW | 2007 | Southwestern Electric Power Co |
| 14 | Bull Shoals | Hydroelectric | 340 MW | 1952 | USCE-Little Rock District |
| 15 | Pine Bluff Energy Center | Natural gas | 230 MW | 2001 | Pine Bluff Energy LLC |
| 16 | Jonesboro City Water & Light Plant | Natural gas | 224 MW | 1999 | City Water and Light Plant (AR) |
| 17 | Flat Fork Solar | Solar | 200 MW | 2025 | Flat Fork Solar, LLC |
| 18 | Forgeview Solar | Solar | 200 MW | 2025 | Forgeview Solar, LLC |
| 19 | Long Lake Solar, LLC | Solar | 200 MW | 2025 | Long Lake Solar, LLC |
| 20 | Thomas Fitzhugh | Natural gas | 185 MW | 1963 | Arkansas Electric Coop Corp |
| 21 | Big Cypress Solar, LLC | Solar | 180 MW | 2023 | Big Cypress Solar, LLC |
| 22 | Newport Solar Project | Solar | 180 MW | 2023 | Newport Solar, LLC |
| 23 | West Memphis Solar Station | Solar | 180 MW | 2024 | Entergy Arkansas LLC |
| 24 | Crooked Lake Solar, LLC | Solar | 175 MW | 2024 | Crooked Lake Solar, LLC |
| 25 | Dardanelle | Hydroelectric | 161 MW | 1965 | USCE-Little Rock District |
Largest plant for each main fuel
| Main fuel | Plants | Capacity | Largest plant | Its capacity |
|---|---|---|---|---|
| Natural gas | 18 | 7,130 MW | Union Power Station | 2,428 MW |
| Coal | 5 | 5,487 MW | Independence Steam Electric Station | 1,800 MW |
| Solar | 65 | 2,544 MW | Flat Fork Solar | 200 MW |
| Nuclear | 1 | 1,845 MW | Arkansas Nuclear One | 1,845 MW |
| Hydroelectric | 19 | 1,351 MW | Bull Shoals | 340 MW |
| Biomass and waste | 5 | 278 MW | Ashdown | 156 MW |
| Wind | 1 | 144 MW | Crossover Wind | 144 MW |
| Battery storage | 4 | 31.2 MW | Noland Wastewater Treatment Plant Hybrid | 11 MW |
| Oil and petroleum | 2 | 8.8 MW | Municipal Light | 7.2 MW |
Balancing areas
| Area | Plants | Capacity |
|---|---|---|
| MISO (Midcontinent) | 75 | 15.0 GW |
| Southwest Power Pool | 28 | 2,210 MW |
| Southwestern Power Administration | 16 | 961 MW |
| Associated Electric Cooperative | 1 | 679 MW |
Biggest operators here
| Operator | Plants | Capacity |
|---|---|---|
| Entergy Arkansas LLC | 11 | 9,635 MW |
| Arkansas Electric Coop Corp | 10 | 2,177 MW |
| Southwestern Electric Power Co | 3 | 1,516 MW |
| USCE-Little Rock District | 6 | 889 MW |
| NRG Energy Services - Plum Point | 1 | 720 MW |
| Associated Electric Coop, Inc | 1 | 679 MW |
| City Water and Light Plant (AR) | 2 | 234 MW |
| Pine Bluff Energy LLC | 1 | 230 MW |
| Flat Fork Solar, LLC | 1 | 200 MW |
| Forgeview Solar, LLC | 1 | 200 MW |