Why solar makes sense (or doesn't) in South Carolina
25% state credit up to $3,500 (over 10 years) is among the most generous in the Southeast.
Avg residential rate13.5¢ / kWh
Avg system cost$2.75 / W ($31,625 for 11.5 kW)
Peak sun hours / day4.7
Net meteringSuccessor Tariff
State tax credit25% (max $3,500)
Federal tax credit30% (Residential Clean Energy Credit, through 2032)
Property tax exemptionNo
Sales tax exemptionNo
South Carolina payback by monthly electric bill
The bigger your current bill, the faster solar pays back. Here's how the numbers work out for a typical South Carolina home:
Monthly bill
System size
Gross cost
Federal credit
State credit
Net cost
Year-1 savings
Payback
$100
6.3 kW
$17,353
−$5,206
−$3,500
$8,647
$1,140
7 yr
$150
9.5 kW
$26,043
−$7,813
−$3,500
$14,730
$1,711
7.9 yr
$200
12.6 kW
$34,705
−$10,412
−$3,500
$20,794
$2,280
8.3 yr
$300
18.9 kW
$52,058
−$15,617
−$3,500
$32,940
$3,420
8.7 yr
Assumes 95% bill offset, 3% annual rate inflation, 0.5% annual panel degradation, and a 25-year system life.
Calculate your exact South Carolina solar payback
Enter your real monthly electric bill to see your personalized payback estimate.
Best path forward in South Carolina
The fastest, free way to see real installer quotes for your roof is to use a marketplace like EnergySage. You'll get up to 4 competing bids from local pros without phone harassment.
Frequently asked questions about solar in South Carolina
How long does it take for solar panels to pay for themselves in South Carolina?
For a typical South Carolina home with a $150/month electric bill, a 9.5 kW system pays for itself in about 7.9 years. Higher bills (or higher state incentives) shorten this; lower bills lengthen it.
What's the average cost of solar panels in South Carolina?
South Carolina installers average $2.75 per watt before incentives. A typical 11.5 kW system costs roughly $31,625 gross, or about $14,730 after federal and state credits.
Does South Carolina offer a state solar tax credit?
Yes — South Carolina offers a 25% state tax credit, capped at $3,500. This stacks on top of the 30% federal Residential Clean Energy Credit.
Does South Carolina have net metering?
South Carolina replaced retail net metering with a successor tariff that credits exports at less than the full retail rate. Solar still pays back, but adding battery storage can recover much of the lost value.
Are solar panels worth it in South Carolina in 2026?
For most South Carolina homeowners with a monthly electric bill above $100, the answer is yes — payback typically lands between 5.5 and 10.3 years depending on roof orientation, shade, and incentive timing. The 30% federal credit is locked in through 2032, removing a major timing risk.