Is solar worth it in South Carolina?

With an average payback period of 11.2 years and 25-year savings of $30,325, solar panels in South Carolina are a solid investment.

How much do solar panels cost in South Carolina?

The average cost of a 6kW residential solar system in South Carolina is $13,600 before incentives and tax credits.

How much can I save with solar panels in South Carolina?

Homeowners in South Carolina save an average of $1,213 per year with solar panels, totaling approximately $30,325 over 25 years.

Solar Panel ROI in South Carolina

Is solar worth it in SC?

2.2x ROI Score

11.2 yrs Payback Period

$1,213 Annual Savings

Key Solar Metrics for South Carolina

Solar Irradiance	5.29 kWh/m²/day
Estimated Annual Production (6kW system)	8,665 kWh
Average Electricity Rate	$0.140/kWh
Average System Cost	$13,600
Estimated Annual Savings	$1,213/year
Payback Period	11.2 years
25-Year Savings	$30,325

South Carolina vs National Average

Solar Irradiance 5.29 kWh/m²/day +6.6% vs national avg

National Avg Irradiance 5.12 kWh/m²/day baseline

Payback Period 11.2 years Slower than average

How We Calculated This

Our solar ROI calculations use data from the National Renewable Energy Laboratory (NREL) PVWatts API, which models solar energy production based on location-specific solar irradiance, weather patterns, and panel tilt angles. We assume a standard 6kW residential system with south-facing panels at optimal tilt.

Electricity rates are sourced from the U.S. Energy Information Administration (EIA) and represent state-level residential averages. Annual savings are calculated by multiplying estimated production by the local electricity rate. The payback period divides system cost by annual savings. The ROI score represents total 25-year savings divided by system cost.

These estimates do not include federal tax credits (currently 30% ITC), state incentives, SRECs, or utility rebates, which can significantly reduce the effective payback period. Actual results vary based on roof orientation, shading, local weather, and utility rate changes.

Compare with Nearby States

North Carolina 12.9 yr payback $1,035/yr savings Georgia 12.1 yr payback $1,114/yr savings

Solar Outlook for South Carolina

South Carolina's solar irradiance of 5.29 kWh/m²/day is 6.6% above the national average. With electricity at $0.140/kWh, the 11.2-year payback is moderate — though incentives and tax credits can significantly shorten it.

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