Solar cost & payback in South Carolina
Short answer
In South Carolina, a home with a $150/month electric bill needs about a 8.9 kW solar system — roughly $18,610 after the 30% federal tax credit, saving about $1,801/year and paying back in ~10.3 years.
System size
8.9 kW
Cost after 30% credit
$18,610
Payback
10.3 yrs
20-yr net savings
$27,396
Solar in South Carolina
South Carolina averages about 4.8 peak sun hours a day and pays roughly 14.5¢/kWh. The figures above assume a $150/month bill and ~$3/watt installed, with the 30% federal tax credit. A bigger bill needs a bigger system; shading, roof orientation, and net-metering rules change the payback.
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Frequently asked questions
How much do solar panels cost in South Carolina?
For a $150/month bill, about a 8.9 kW system — roughly $26,585 before incentives, or $18,610 after the 30% federal tax credit. Larger bills need bigger, pricier systems.
Is solar worth it in South Carolina?
South Carolina gets about 4.8 peak sun hours a day and pays ~14.5¢/kWh. A typical system pays back in ~10.3 years and saves about $27,396 net over 20 years — a longer payback, so run your own numbers.
What is the solar tax credit in South Carolina?
The 30% federal Residential Clean Energy Credit applies everywhere, including South Carolina — about $7,976 on the example system. South Carolina may add its own state incentives on top; check current programs.