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Ameren offers 3 residential rate plans: Standard Residential (1M) (standard), Smart Savers (time-of-use), Evening/Morning Savers (time-of-use). Rates range from 10¢–16.4¢/kWh across all plans. Largest utility in Missouri (~1.1M residential customers). 12% rate increase effective June 2025 ($14/month avg). 22% below national average. Lowest rates among investor-owned utilities in Missouri. Significant nuclear generation (Callaway plant - 31% of production). Understanding which plan fits your usage pattern can significantly affect your monthly bill.
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