v3.25.2
Rate and Regulatory Matters (Tables)
 6 Months Ended
Jun. 30, 2025
Regulated Operations [Abstract]  
Schedule of Generation Facilities The following table provides information with respect to each facility:
Agreement typeFacility sizeStatus of MoPSC CCN
In-service date(a)
Vandalia Solar Project(b)
Self-build
50-MW
Approved March 2024Fourth quarter 2025
Bowling Green Solar Project(b)
Self-build
50-MW
Approved March 2024First quarter 2026
Split Rail Solar Project(b)
Build-transfer(c)
300-MW
Approved March 2024Mid-2026
Castle Bluff Natural Gas Project(d)
Self-build
800-MW
Approved October 2024Fourth quarter 2027
Big Hollow Battery Energy Storage ProjectSelf-build
400-MW
Filed June 2025(e)
Second quarter 2028
Big Hollow Natural Gas ProjectSelf-build
800-MW
Filed June 2025(e)
Third quarter 2028
(a)In-service dates are dependent on the timing of regulatory approvals and construction completion, among other things.
(b)These projects collectively represent approximately $0.8 billion of capital expenditures.
(c)FERC approval of acquisition received November 2024.
(d)This project represents approximately $0.9 billion of capital expenditures.
(e)Ameren Missouri expects a decision by the MoPSC in the first half of 2026.