Power Plants in Mississippi

Mississippi's power sector in numbers

Bywatts maps 37 operating power plants with 15.3 GW of nameplate capacity in Mississippi. Natural Gas leads with 60% of that capacity across 21 plants, followed by Coal (29%) and Nuclear (9%). The inventory also includes 11 plants (2.2 GW) that EIA-860 lists as retired and 1 never built; the largest retired plant is BAXTER WILSON (1,328 MW, retired 2023).

The largest operating plants are VICTOR J DANIEL JR (2,229 MW, Coal, MISSISSIPPI POWER CO), GRAND GULF (1,440 MW, Nuclear, SYSTEM ENERGY RESOURCES, INC) and JACK WATSON (1,216 MW, Coal, MISSISSIPPI POWER CO).

Of the 35 operating plants with a recorded commissioning year, 17 came online in 2000 or later and 4 in 2010 or later; the busiest decade for new capacity was the 2000s (8.0 GW).

The largest operators by operating capacity are MISSISSIPPI POWER CO (5 plants, 3.7 GW), TENNESSEE VALLEY AUTHORITY (5 plants, 3.1 GW) and SOUTH MISSISSIPPI EL PWR ASSN (6 plants, 2.2 GW).

Retail electricity sales in Mississippi reached 49.6 TWh in 2025, up 1.9% over ten years and up 1.9% year on year; residential customers took 38.5% of it. The average retail price across all sectors was 11.58 cents per kWh, up 21.4% since 2015.

The database also maps 368 named substations (4 of the 156 with a recorded voltage are rated 345 kV or above), no data centers, 15 solar installers and 9 solar companies in Mississippi.

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.