ColumbiaSolar Incentives 2026: Rebates, Tax Credits & Net Metering
Columbia homeowners installing in 2026 cannot claim the federal residential credit. What remains is the 25% South Carolina state credit and Dominion Energy SC net metering. At 5.2 peak sun hours a day, a home with a $150/month bill (about 1,071 kWh) needs roughly a 8.6 kW system — 22 panels — and pays back in about 10.2 years.
Solar Incentives Available in Columbia
The federal residential credit does not apply to a Columbia system installed in 2026. South Carolina still lists a 25% state income tax credit (up to $3,500). Dominion Energy SC sets the local rules for crediting the solar power you export.
Columbia homes stack Dominion net metering with South Carolina's 25% state solar tax credit (up to $35,000 lifetime).
How Much Solar Columbia Homes Produce
Columbia gets 5.2 peak sun hours a day, so each 1 kW of panels produces about 1,518 kWh per year here. A 8.6 kW system — the size that fits a typical $150/month Dominion Energy SC bill — generates roughly 13,058 kWh annually, worth about $1,828 in avoided electricity in year one and more as rates rise.
Dominion Energy SC Net Metering in Columbia
Dominion Energy SC credits excess solar generation from Columbia homes under South Carolina's full retail-rate net metering (~100% of retail). A right-sized system can bring net annual electricity costs close to zero. See full South Carolina net metering rules →
How Much Do Solar Panels Cost in Columbia?
At South Carolina's 2026 average of $2.85/watt, the 8.6 kW system most Columbia homes need runs about $24,510 before incentives. The federal residential credit is $0. The South Carolina state credit in this model is $3,500. Net cost in this model is about $21,010, with payback around 10.2 years. Those figures use $0 federal credit.
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Frequently Asked Questions
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See your exact Columbia solar savings
Enter your Dominion Energy SC bill. The calculator uses $0 federal credit plus South Carolina incentives — system size, net cost, payback, and 25-year savings.