Ameren Missouri is an investor-owned utility serving about 1,100,654 homes in Missouri. Here's what its rates and export rules mean for solar: for a typical customer, solar is a close call.
Average price (2026 est.)
13.9¢0% below Missouri average
Typical bill
$1441,032 kWh a month
Exports credited
4.6¢Avoided-cost export credit
Typical payback
15.9 yrs7.2 kW, cash
Export rules for Ameren Missouri customers
Avoided-cost export credit — about 4.6¢ per exported kWh, monthly netting.
Missouri net metering (Sheet 171): kWh netted over billing period (by TOU period on TOU rates); net excess credited at Net Metering Rate (avoided fuel cost); credits expire after 12 months.
Uses the utility's average price; time-of-use plans can change this, so pick your plan in the calculator.
Current residential rate plans
Rates we verified from Ameren Missouri's tariff documents. Prices are per kWh including the main riders where noted; check your bill for the plan you're on.
1(M) Evening/Morning Saver: Residential Evening/Morning Saver Service (default for advanced-meter customers)
Plan for solar customers. Effective 2026-06-01. Fixed charge $9.19/month.
Period
Price
9am–9pm (4 months)
16.3¢
12am–9am, 9pm–12am (4 months)
15.7¢
9am–9pm (8 months)
11.2¢
12am–9am, 9pm–12am (8 months)
10.9¢
Winter energy tiered: first 750 kWh 10.45c, over 750 kWh 7.01c (base, before +0.28c on-peak adder and FAC). Periods show first-750 tier; over-750 all-in = 7.455c off-peak / 7.735c on-peak.
Monthly excess at avoided fuel cost (~5.39 summer / 3.92 winter, consumer guide figures). Exported power is credited at about 4.6¢ per kWh.
How much does electricity cost with Ameren Missouri?
Residential customers paid an average of 13.3¢ per kWh in 2025 (EIA), about 13.9¢ adjusted to 2026. The typical home uses 1,032 kWh a month, a bill of about $144.
Is solar worth it with Ameren Missouri?
For a typical customer, solar is a close call: a 7.2 kW system costing about $20,420 pays back in about 15.9 years, with $13,294 net over 25 years.
How many Ameren Missouri customers have solar?
About 8,998 homes had net-metered solar at the end of 2025, roughly 0.8% of residential customers (EIA-861).
Legal name: Union Electric Co - (MO) (EIA ID 19436). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026, utility tariff sheets.