USUS Grid ExplorerInfrastructure intelligence
Preliminary 2025 facility recordOperating

West Alton, MO · EIA plant 2107

Sioux

Sioux is a coal power facility in West Alton, MO, with 1,099 MW of operating capacity.

Open on mapView MO profileOpen EIA source
Operating capacity1,099 MW2 operating generators
Proposed capacity0 MW0 proposed generators
UtilityUnion Electric Co - (MO)EIA-reported operator
Balancing authorityMISOMidcontinent Independent Transmission System Operator, Inc..

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Coal1,099 MW
ProposedNo proposed capacity reported
Reported technologiesConventional Steam Coal

Nearby in MO

Related facilities

MO · 19.4 miRenewable Energy Center at BJH2 MW →MO · 19.5 miIKEA St. Louis 4101 MW →MO · 20.2 miTrigen St. Louis34 MW →MO · 20.6 miSouthwestern Bell Telephone17 MW →

Source quality

Preliminary facility data

This page uses the EIA-860 2025 Early Release. EIA identifies the release as preliminary, so it should not be used for official state or national aggregation. Capacity is nameplate capacity, not real-time output or annual generation.

Read methodologyEIA-860 source