South Carolina / James Island
Is solar worth it in James Island?
Dominion Energy South Carolina, Inc averages 14.6¢/kWh. With 5.1 peak sun hours a day, a typical 7.0 kW system makes ~10,388 kWh a year and saves about $1,516 in year one.
No federal tax credit is included. The 30% homeowner credit (IRS §25D) ended for systems installed after Dec 31, 2025. What changed in 2026 →
How James Island compares
That is about the same as the South Carolina average of 11.1 years, mainly because James Island's rate is above the state average of 14.4¢/kWh. Your own payback depends on your bill: enter your ZIP and monthly bill above for your number.
| Nearby city | Rate | Payback | 25-yr net |
|---|---|---|---|
| Mount Pleasant | 14.6¢ | 10.9 yrs | $36,006 |
| Charleston | 14.6¢ | 10.9 yrs | $36,006 |
| Hanahan | 14.6¢ | 10.9 yrs | $36,006 |
| North Charleston | 14.6¢ | 10.9 yrs | $36,006 |
| Goose Creek | 14.6¢ | 10.9 yrs | $36,006 |
| Summerville | 14.6¢ | 10.9 yrs | $36,006 |
| Moncks Corner | 14.6¢ | 10.9 yrs | $36,006 |
| Beaufort | 14.6¢ | 10.9 yrs | $35,727 |
Questions
How long does solar take to pay off in James Island, SC?
About 10.9 years for a typical 7.0 kW system at 14.6 cents/kWh, assuming $2.75/W installed, full net metering and 3% yearly rate increases, with no federal tax credit.
Is solar worth it in James Island?
Often, if you plan to stay long-term. Our estimate is $1,516 saved in year one and $36,006 net over 25 years after paying for the system.
How much does a solar system cost in James Island?
A 7.0 kW system sized for an average home (863 kWh/month) is about $19,250 before any local rebates, at $2.75 per watt. Real quotes vary by roof and installer.
Is there a federal solar tax credit in 2026?
Not for homeowners who buy their system. The 30% Residential Clean Energy Credit (IRS section 25D) does not apply to installations completed after December 31, 2025. State rebates, SRECs and utility incentives may still apply.
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