Ameren Missouri Seeks Mid-2027 Rate Hike After $21M Savings, 400 MW Addition
AEE•Ameren Missouri filed with Missouri PSC for cost recovery of grid upgrades and new generation, projecting $21 million in base rate savings over two years and adding 400 MW of capacity powering 70 000 homes by end-2026. If approved, average residential bills would rise by about $13 monthly in mid-2027.
1. Rate Filing and Project Scope
Ameren Missouri filed with state regulators for cost recovery of electric system upgrades and new generation assets, initiating an 11-month review before mid-2027 base rate changes. The request covers investments in storm-resilient infrastructure, smart technology, upgraded substations and poles, and three new energy centers.
2. Financial Implications
The proposal leverages $21 million in anticipated base rate savings from large load commitments over two years while maintaining residential rates about 27% below regional averages. If approved, average bills for 1,011 kWh usage would increase by roughly $13 per month starting mid-2027, with a new income-eligible discount rate offsetting costs for vulnerable customers.
3. Reliability and Capacity Enhancements
Since January 2025, storm-resistant upgrades have prevented over 260,000 outages during major weather events, reducing service disruptions. Planned additions include 400 MW of diversified capacity by end-2026—enough to power about 70,000 homes—and dual-fuel upgrades at Labadie and Audrain energy centers to bolster performance in extreme conditions.
