Peak sun hours in South Carolina (2026)
South Carolina averages 5 peak sun hours per day — 6% above the US average of 4.7. In practical terms, every 1 kW of solar there produces about 1,460 kWh of electricity a year.
Peak sun hours/day
5
Annual kWh per kW
1,460
vs US average
+6%
What this means for your system
To produce a given amount of electricity, you need fewer panels where there are more peak sun hours. At 5 hours, a typical home in South Carolina needs a system sized to its usage and local sun — see exact numbers on the South Carolina solar cost page or work it out with our sizing guide.
Peak sun hours in South Carolina: FAQ
How many peak sun hours does South Carolina get?
South Carolina averages about 5 peak sun hours per day — 6% above the US average. That works out to roughly 1,460 kWh of electricity per year for every 1 kW of solar installed.
Is South Carolina good for solar based on sunlight?
Sunlight is only part of the picture. South Carolina's 5 peak sun hours help production, but your electricity rate and incentives matter just as much. See the full economics on our South Carolina solar cost page.