Parent company profile

Ameren

Ameren operates 32 U.S. generating facilities through 2 reported operators, with a combined nameplate capacity of 12.74 GW. The largest share of capacity is coal (45%), spread across 3 states.

Ownership reflects the utility or operator reported to EIA (Form EIA-860); equity ownership of individual facilities may differ. The grouping of operators into this parent company is curated by GridAlmanac from public corporate-ownership records.

32
Plants
12.74 GW
Total capacity
2
Subsidiaries
3
States

Capacity mix

Coal 45.3%Natural Gas 27.3%Nuclear 9.7%Hydroelectric 5.8%Wind 5.5%Solar 4.0%Oil 2.3%

Operating subsidiaries

Union Electric Co - (MO)31 · 12.73 GW

1 smaller reported operator is included in the totals and plant list below but does not have its own operator page.

By state

Illinois8 · 2.68 GWIowa1 · 124.8 MWMissouri23 · 9.93 GW

Operating plants

PlantFuelStateOwnerCapacity
LabadieCoalMissouriUnion Electric Co - (MO)2.39 GW
CallawayNuclearMissouriUnion Electric Co - (MO)1.24 GW
SiouxCoalMissouriUnion Electric Co - (MO)1.10 GW
Audrain Generating StationNatural GasMissouriUnion Electric Co - (MO)814.4 MW
Goose Creek Energy CenterNatural GasIllinoisUnion Electric Co - (MO)684 MW
VeniceNatural GasIllinoisUnion Electric Co - (MO)586 MW
Raccoon Creek Energy CenterNatural GasIllinoisUnion Electric Co - (MO)456 MW
Taum SaukHydroelectricMissouriUnion Electric Co - (MO)408 MW
High Prairie Wind FarmWindMissouriUnion Electric Co - (MO)400 MW
PinckneyvilleNatural GasIllinoisUnion Electric Co - (MO)380 MW
Atchison County WindWindMissouriUnion Electric Co - (MO)299 MW
KinmundyNatural GasIllinoisUnion Electric Co - (MO)270 MW
Peno CreekNatural GasMissouriUnion Electric Co - (MO)240 MW
Osage DamHydroelectricMissouriUnion Electric Co - (MO)208 MW
Huck Finn Renewable Energy CenterSolarMissouriUnion Electric Co - (MO)200 MW
Boomtown Renewable Energy CenterSolarIllinoisUnion Electric Co - (MO)150 MW
Cass County Renewable Energy CenterSolarIllinoisUnion Electric Co - (MO)150 MW
KeokukHydroelectricIowaUnion Electric Co - (MO)124.8 MW
FairgroundsOilMissouriUnion Electric Co - (MO)68.3 MW
MoreauOilMissouriUnion Electric Co - (MO)60.8 MW
MexicoOilMissouriUnion Electric Co - (MO)60.7 MW
MoberlyOilMissouriUnion Electric Co - (MO)60.6 MW
Montgomery County Community Solar CenterSolarMissouriUnion Electric Co - (MO)5.7 MW
O'Fallon Renewable Energy CenterSolarMissouriUnion Electric Co - (MO)4.5 MW
Renewable Energy Center at BJHSolarMissouriUnion Electric Co - (MO)1.6 MW
TAC-Distributed Energy Resource HybridNatural GasIllinoisAmeren Illinois1.5 MW
Cape Girardeau Renewable Energy CenterSolarMissouriUnion Electric Co - (MO)1.2 MW
Retired plants (5)
PlantFuelStateOwnerCapacity
Rush Islandretired 2024CoalMissouriUnion Electric Co - (MO)1.24 GW
Meramecretired 2022CoalMissouriUnion Electric Co - (MO)1.04 GW
Howard Bendretired 2015OilMissouriUnion Electric Co - (MO)47.4 MW
Viaductretired 2011Natural GasMissouriUnion Electric Co - (MO)30.6 MW
Kirksvilleretired 2018Natural GasMissouriUnion Electric Co - (MO)15 MW

See the full operator directory under owners & operators.