Ameren Missouri rate case: July 15, 2026 deadline to intervene as base-rate request seeks about $13/month more for the average bill (if approved)
The Missouri Public Service Commission set July 15, 2026 as the deadline to intervene in Ameren Missouri’s electric base-rate case (ER-2026-0291). Ameren says the request would mean about $343 million more annually—roughly $13 per month for the average residential customer—if the PSC approves the proposal.