Power Plants in Missouri

Missouri's power sector in numbers

Bywatts maps 92 operating power plants with 19.4 GW of nameplate capacity in Missouri. Coal leads with 52% of that capacity across 13 plants, followed by Natural Gas (26%) and Oil (7%). The inventory also includes 31 plants (4.1 GW) that EIA-860 lists as retired and 1 partly retired with no operable units of its recorded fuel; the largest retired plant is RUSH ISLAND (1,242 MW, retired 2024).

The largest operating plants are LABADIE (2,389 MW, Coal, UNION ELECTRIC CO), IATAN (1,640 MW, Coal, KANSAS CITY POWER & LIGHT CO) and NEW MADRID (1,300 MW, Coal, ASSOCIATED ELECTRIC COOP, INC).

Of the 89 operating plants with a recorded commissioning year, 25 came online in 2000 or later and 4 in 2010 or later; the busiest decade for new capacity was the 1970s (6.2 GW).

The largest operators by operating capacity are UNION ELECTRIC CO (11 plants, 6.6 GW), ASSOCIATED ELECTRIC COOP, INC (7 plants, 3.8 GW) and KANSAS CITY POWER & LIGHT CO (3 plants, 3.2 GW).

Retail electricity sales in Missouri reached 80.1 TWh in 2025, down 1.7% over ten years and up 3.0% year on year; residential customers took 45.7% of it. The average retail price across all sectors was 11.57 cents per kWh, up 22.5% since 2015.

The database also maps 321 named substations (32 of the 34 with a recorded voltage are rated 345 kV or above), 5 data centers (operators include Netrality Data Centers, Cassidy/Turley and Hostirian), 114 solar installers and 45 solar companies in Missouri.

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.