Electricity Rates in Charleston, SC
Average electricity cost, utility comparison, and solar savings potential for Charleston homeowners.
Charleston Electricity Cost Overview
The average residential electricity rate in Charleston, SC is $0.13 per kWh, which is 19% below the national average of $0.16/kWh. Homeowners in Charleston pay an average of $113 per month for electricity, based on typical usage of 868 kWh per month.
Electricity rates in Charleston are determined by the local utility providers that serve the area. Rates can vary depending on your specific utility, usage level, and time of use.
Electric Utilities Serving Charleston
| Utility Company | Avg Rate ($/kWh) | Est. Monthly Bill |
|---|---|---|
| Duke Energy Carolinas | $0.13 | $113 |
| Dominion Energy SC | $0.13 | $113 |
| Santee Cooper | $0.11 | $95 |
How Solar Compares to Charleston Electricity Rates
Without Solar
- Monthly bill: $113
- Annual cost: $1,356
- 25-year cost: $33,900
- Rate trend: Rising 2-5% annually
With Solar
- Monthly savings: $88
- Annual savings: $1,056
- 25-year savings: $32,000
- Rate: Locked in for 25+ years
Electricity Rates FAQ - 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.
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