St. LouisSolar Incentives 2026: Rebates, Tax Credits & Net Metering
St. Louis homeowners installing in 2026 cannot claim the federal residential credit. What remains is Ameren Missouri net metering. At 4.7 peak sun hours a day, a home with a $120/month bill (about 857 kWh) needs roughly a 7.6 kW system — 19 panels — and pays back in about 12.8 years.
Solar Incentives Available in St. Louis
The federal residential credit does not apply to a St. Louis system installed in 2026. Missouri does not add a state income tax credit in this dataset. Ameren Missouri sets the local rules for crediting the solar power you export.
Ameren Missouri pairs net metering with a residential solar rebate it has run historically, lowering St. Louis system costs.
How Much Solar St. Louis Homes Produce
St. Louis gets 4.7 peak sun hours a day, so each 1 kW of panels produces about 1,372 kWh per year here. A 7.6 kW system — the size that fits a typical $120/month Ameren Missouri bill — generates roughly 10,430 kWh annually, worth about $1,460 in avoided electricity in year one and more as rates rise.
Ameren Missouri Net Metering in St. Louis
Ameren Missouri credits excess solar generation from St. Louis homes under Missouri's full retail-rate net metering (~100% of retail). A right-sized system can bring net annual electricity costs close to zero. See full Missouri net metering rules →
How Much Do Solar Panels Cost in St. Louis?
At Missouri's 2026 average of $2.85/watt, the 7.6 kW system most St. Louis homes need runs about $21,660 before incentives. The federal residential credit is $0. Net cost in this model is about $21,660, with payback around 12.8 years. Those figures use $0 federal credit.
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Frequently Asked Questions
Solar Incentives in Other Missouri Cities
See your exact St. Louis solar savings
Enter your Ameren Missouri bill. The calculator uses $0 federal credit plus Missouri incentives — system size, net cost, payback, and 25-year savings.