LouisvilleSolar Incentives 2026: Rebates, Tax Credits & Net Metering
Louisville homeowners installing in 2026 cannot claim the federal residential credit. What remains is LG&E net metering. At 4.4 peak sun hours a day, a home with a $130/month bill (about 929 kWh) needs roughly a 8.8 kW system — 22 panels — and pays back in about 13.9 years.
Solar Incentives Available in Louisville
The federal residential credit does not apply to a Louisville system installed in 2026. Kentucky does not add a state income tax credit in this dataset. LG&E sets the local rules for crediting the solar power you export.
LG&E moved Kentucky solar to a net billing rate, so Louisville exports are credited below retail — self-consumption is key.
How Much Solar Louisville Homes Produce
Louisville gets 4.4 peak sun hours a day, so each 1 kW of panels produces about 1,285 kWh per year here. A 8.8 kW system — the size that fits a typical $130/month LG&E bill — generates roughly 11,306 kWh annually, worth about $1,583 in avoided electricity in year one and more as rates rise.
LG&E Net Metering in Louisville
LG&E credits excess solar generation from Louisville homes under Kentucky's full retail-rate net metering (~100% of retail). A right-sized system can bring net annual electricity costs close to zero. See full Kentucky net metering rules →
How Much Do Solar Panels Cost in Louisville?
At Kentucky's 2026 average of $2.95/watt, the 8.8 kW system most Louisville homes need runs about $25,960 before incentives. The federal residential credit is $0. Net cost in this model is about $25,960, with payback around 13.9 years. Those figures use $0 federal credit.
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Frequently Asked Questions
See your exact Louisville solar savings
Enter your LG&E bill. The calculator uses $0 federal credit plus Kentucky incentives — system size, net cost, payback, and 25-year savings.