Electricity Rates in Charleston, SC

The average residential electricity rate in Charleston is $0.13 per kilowatt-hour (kWh), which is 19% below the national average of $0.16/kWh. The average monthly electric bill for Charleston homeowners is approximately $113.

With solar panels, Charleston homeowners can reduce their electricity costs by approximately 78%, saving around $88 per month or $32,000 over 25 years. The 30% federal tax credit further reduces the upfront cost of going solar.

The major electric utilities serving the Charleston area include Duke Energy Carolinas, Dominion Energy SC, Santee Cooper. Rates vary between providers, so your exact cost depends on your utility and usage level.

Yes, electricity rates in Charleston and across South Carolina have been increasing, following national trends of 2-5% annual increases. This makes solar panels an increasingly attractive option since they lock in your energy costs for 25+ years.