Power Plants in Arkansas

Arkansas's power sector in numbers

Bywatts maps 48 operating power plants with 16.2 GW of nameplate capacity in Arkansas. Natural Gas leads with 45% of that capacity across 15 plants, followed by Coal (26%) and Nuclear (11%). The inventory also includes 12 plants (1.7 GW) that EIA-860 lists as retired, 1 partly retired with no operable units of its recorded fuel and 1 never built; the largest retired plant is ROBERT E RITCHIE (923 MW, retired 2013).

The largest operating plants are UNION POWER PLANT (2,428 MW, Natural Gas, UNION POWER PARTNERS LP), ARKANSAS NUCLEAR ONE (1,845 MW, Nuclear, ENTERGY ARKANSAS INC) and INDEPENDENCE (1,800 MW, Coal, ENTERGY ARKANSAS INC).

Of the 48 operating plants with a recorded commissioning year, 18 came online in 2000 or later and 4 in 2010 or later; the busiest decade for new capacity was the 2000s (5.9 GW).

The largest operators by operating capacity are ENTERGY ARKANSAS INC (7 plants, 7.0 GW), UNION POWER PARTNERS LP (1 plant, 2.4 GW) and ARKANSAS ELECTRIC COOP CORP (9 plants, 2.0 GW).

Retail electricity sales in Arkansas reached 53.0 TWh in 2025, up 14.0% over ten years and up 6.1% year on year; residential customers took 36.3% of it. The average retail price across all sectors was 9.84 cents per kWh, up 20.2% since 2015.

The database also maps 114 named substations (4 of the 7 with a recorded voltage are rated 345 kV or above), no data centers, 43 solar installers and 14 solar companies in Arkansas.

Operating capacity by fuel

Retail electricity sales

Sources: HIFLD power-plant inventory (capacity, fuel, operator), EIA-860 (commissioning year, retirements, operable capacity), EIA retail sales and revenue series through January 2026. Counts are of plants Bywatts lists, not every generator in the state.