Missouri Solar Guide 2026

Missouri offers moderate solar economics with Ameren service and decent sun hours, though limited state incentives moderate returns.

Updated March 2026 · Sources: Ameren, DSIRE, EnergySage, NREL · Research by Dana Mercer
#29 solar state Moderate conditions
Avg install cost $2.85/W Before incentives · Q1 2026 · EnergySage
Electricity rate 12¢/kWh Statewide avg · EIA Jan 2026
Peak sun hrs/day 4.5 hrs State avg · NREL data
Typical payback 10-12 yrs After federal ITC
Solar rank #29 Installed capacity · SEIA 2025

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Missouri provides moderate solar conditions: With 4.5 daily peak sun hours and 12¢/kWh electricity rates, the Show-Me State offers reasonable solar fundamentals. Ameren serves much of the state with net metering available for residential customers.

For St. Louis and Kansas City residents, solar systems typically pay for themselves in 10-12 years. Moderate electricity rates and installation costs create balanced solar economics.

Missouri solar incentives (2026)

Incentive Amount Status
Federal ITC 30% of system cost Active
Ameren Net Metering Full retail rate Active
Property Tax Exemption Not available None
Sales Tax Exemption Not available None

Missouri solar install costs (Q1 2026)

System size Gross cost After ITC Annual savings Payback
6 kW $17,100 $11,970 ~$1,080/yr ~11.1 years
8 kW $22,800 $15,960 ~$1,440/yr ~11.1 years

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