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Solar in Dorchester County, SC

Solar panels in Summerville, SC

5 peak sun hours per day. See what the data says about Summerville, then check your specific roof free.

Utility territory: Dominion Energy SC

Local context

What limits Summerville roofs

Summerville averages 5 peak sun hours per day in the regional data. Roof orientation, usable area, and shade can reduce production further for an individual property.

Solar data for Summerville

Peak sun hours / day
5 hrs

Modeled annual average.

Typical system size
6–11 kW

Residential, based on typical household load.

Estimated first-year savings
$1,150–$2,150

Per year for a typical 6–11 kW system. The high end assumes the larger array.

Roofs suitable for solar
62–74%

Modeled from regional adoption data.

Primary utility
Dominion Energy SC

Contact your utility for current net billing enrollment status.

Net metering / billing
Net Billing (RCP)

Dominion Energy South Carolina's Solar Choice tariff requires a time-of-use rate and credits exports at the rate for the period when they occur — most solar exports land in off-peak hours (recently ~9¢/kWh, below the average retail rate) — so self-consumption maximizes value. This estimate uses conservative credit values rather than itemizing Dominion's fixed monthly solar program charges.

Estimates use the average South Carolina current utility rate (before solar) of $0.16/kWh (EIA, retrieved Aug 2026) and modeled solar production; individual results vary with your rate, usage, roof orientation, and shading.

Personalized estimate

Estimate your first-year solar savings

Start with your bill or adjust the rate and typical system size for Summerville.

kW

Typical homes: 6–11 kW.

$/ kWh

Prefilled with the state residential average.

Estimated first-year savings

$1,650/ yr

$1,150–$2,150/yr for a typical 6–11 kW system — the low end is a smaller array, the high end a larger one.

Estimate — individual results vary with your rate, usage, roof orientation, and shading. Assumes an 85% system derate and 50% self-consumption; exported energy uses the local net-billing estimate.

City averages are a starting point — check your address for your verified result.

Frequently asked questions

How much sun does Summerville get for solar?

Summerville receives approximately 5 peak sun hours per day on average, based on modeled regional data.

What is the estimated first-year savings from solar in Summerville?

For a typical 6–11 kW system in Summerville, first-year savings are estimated at $1,150–$2,150 per year: the low end uses the smaller system, while the high end is up to the larger system. Estimates use the average South Carolina current utility rate (before solar) of $0.16/kWh (EIA, retrieved Aug 2026) and modeled solar production; individual results vary with your rate, usage, roof orientation, and shading. These are educational estimates, not guarantees.

What can limit solar production in Summerville?

Summerville averages 5 peak sun hours per day in the regional data. Roof orientation, usable area, and shade can reduce production further for an individual property.

Data source: City figures are modeled estimates for general guidance — not a quote for any specific property.

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The city data above is a regional estimate. Enter your address to get a personalized result based on your actual roof.

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