Solar in Charleston & the peninsula · SC
Solar installers in Charleston, SC
From the peninsula to West Ashley and Johns Island, we design solar built for Charleston roofs, Charleston weather, and Charleston’s rules, with a local team you can actually reach.
Solar in Charleston, SC · as of July 2026
Charleston sits in Charleston County and is served by Dominion Energy South Carolina. Whether solar works at a given address here depends on that utility's current export terms, how much of your production you use on site, your roof's condition and orientation, and any review your community or locality applies. We confirm the utility from your bill before designing, because it decides more of the outcome than any equipment choice on a quote.
Solar in Charleston
Built for Charleston roofs, rules, and utilities
Most Charleston homes are served by Dominion Energy South Carolina, though some addresses fall under Berkeley Electric Co-op or Santee Cooper pockets, which we confirm during the assessment. Under Dominion’s current Solar Choice framework, exported energy is credited on a time-of-use basis rather than the older 1:1 net metering, which closed to new applicants on 1 June 2021. Between coastal salt air, hurricane wind load, and older peninsula roofs, roof condition and mounting matter as much as panel choice here.
Charleston’s historic districts and Board of Architectural Review can affect panel placement and visibility, and many neighborhoods also have active HOAs. We design for approval and prepare the architectural-review package for you. Coastal and flood-zone homes get extra attention to mounting and roof-penetration detailing, covered by our lifetime roof-penetration warranty.
Handling the paperwork most homeowners dread is our job: HOA and architectural-review coordination, permitting, and the utility interconnection. See what our lifetime warranty covers.
You get the same crew, the same standards, and the same lifetime warranty in Charleston as anywhere else we work in South Carolina. We're a South Carolina company, headquartered in the Charleston area and built to serve homeowners statewide.
Honest numbers
What solar actually costs in Charleston
Priced at the $2.54 per watt local benchmark as of July 2026, before and after $South Carolina’s 25% state tax credit. Worked examples to set expectations, not a quote.
| System size | Before incentives | SC 25% credit | Net after credit |
|---|---|---|---|
| 6 kW | $15,240 | $3,810 over 2 tax years | $11,430 |
| 9.5 kWClosest to our ~9.5 kW average system | $24,130 | $6,033 over 2 tax years | $18,098 |
| 12 kW | $30,480 | $7,620 over 3 tax years | $22,860 |
The number most quotes leave out: because Dominion Energy South Carolina credits exported power at roughly 2.8–4.1¢ per kWh rather than at retail, how much production you use on site drives your payback more than which panels you buy.
2026 incentives
What you can actually claim in Charleston
The federal residential credit ended for systems placed in service on or after January 1, 2026. Any quote still applying 30% federal is wrong, and the gap runs to thousands of dollars.
$South Carolina’s 25% state tax credit did not expire. It is worth 25% of installed cost, capped at $3,500 per tax year, with a 10-year carry-forward and a further limit of 50% of your state tax liability. Qualifying systems of 20 kW or less are exempt from property tax, and equipment is exempt from state sales tax.
Dominion Energy South Carolina runs no upfront residential rebate, so there is no cash-back programme to stack here. We would rather say that plainly than let you find out after signing.
Full Charleston incentives breakdown · financing options · SC Department of Revenue
Charleston specifics
What installing here actually involves
The six things that shape a Charleston design. Getting these right is most of the job, and it is where a local crew beats a national sales operation.
- 01
Your utility, confirmed per address
Most of Charleston is served by Dominion Energy South Carolina, though Berkeley Electric Cooperative and Santee Cooper serve some addresses. It sets how your exported power is credited, which matters more than any equipment choice.
- 02
What shades your roof here
Mature live oaks are part of what makes Charleston beautiful and they are the most common reason a design gets smaller here.
- 03
Coastal mounting and wind load
Charleston County sits in a high-wind coastal zone, so attachment spacing, structural review and roof-penetration detailing are more demanding than inland, and salt air punishes under-specified hardware.
- 04
Architectural review and HOAs
Charleston's historic districts and Board of Architectural Review can restrict panel placement and street visibility, and many neighbourhoods also have active HOAs.
- 05
Outages and climate
Multi-day hurricane-season outages are the scenario worth designing for on this coast, which favours essentials-first backup over whole-house ambition.
- 06
Permits in Charleston County
A building permit and a separate electrical permit, with plan review above roughly 10 kW. We pull all of it and manage the inspection sequence.
What we install in Charleston
Every service, backed by one local team
Go deeper on Charleston
The numbers, the incentives, and the honest verdict
Costs and utility terms changed in 2026. These pages carry the current figures for Charleston, each dated and sourced, including what we would tell you not to do.
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What solar costs in Charleston
Real per-watt pricing, the 25% state credit worked out, and honest payback ranges. -
Charleston solar incentives
What Dominion Energy South Carolina pays for exports, plus the TC-38 credit and tax exemptions. -
Is solar worth it in Charleston?
The four variables that decide it, and who solar genuinely does not suit. -
Buying solar in Charleston
How to compare quotes properly, and the red flags worth walking away from.
Nearby
We also serve near Charleston
Charleston solar FAQ
Common questions from Charleston homeowners
Who is my electric utility in Charleston?
Most of Charleston is served by Dominion Energy South Carolina, with some addresses under Berkeley Electric Co-op or Santee Cooper. We confirm your exact utility during your free assessment, since it determines how your solar is credited.
Do Charleston HOAs allow solar?
In most cases, yes. South Carolina law limits an HOA’s ability to prohibit solar outright, and we handle the architectural-review paperwork for you as part of every installation.
Is solar worth it in Charleston?
It depends on your roof, your usage, and your utility, so there’s no single answer. South Carolina’s 25% state tax credit and property-tax exemption may apply for eligible homeowners; confirm with a tax professional. A free assessment gives you real numbers for your home, not a national average.
What warranty do you offer in Charleston?
Every system is backed by a lifetime full-system warranty and a roof-penetration warranty, on top of the manufacturer’s panel warranty and our workmanship coverage.
Keep reading
Solar guides for South Carolina homeowners
- Residential Solar
Is Your Roof Too Shaded for Solar? A Quote-Stage Decision Guide
Learn how to audit measured roof shade, production-model inputs, tree assumptions, layout alternatives, inverter architecture, and the pause decision.
18 min read - Residential Solar
What a Solar Site Survey Should Check Before Your Final Quote
Use this South Carolina solar site survey checklist to turn roof, shade, electrical, route, land, utility, permit, and HOA findings into a final scope.
20 min read - Residential Solar
How Many Solar Panels Do You Need in South Carolina?
Calculate a South Carolina solar system size from your actual kWh, roof, PVWatts model, equipment, utility rules, and future electric loads.
21 min read - Home & Roof
Can You Put Solar Panels on an Old Roof in South Carolina?
Use roof condition, attachment details, timing, and written responsibilities, rather than a universal age cutoff, to decide if an older roof is ready for solar.
22 min read - Residential Solar
How to Compare the Best Solar Installers in South Carolina
Compare South Carolina solar installers with a transparent shortlist: verify licenses, company roles, contracts, reviews, warranties, and service evidence.
21 min read - Home Ownership
Buying a South Carolina Home With Solar Panels
Buying a house with solar panels? Verify ownership, debt, roof and system condition, permits, utility status, warranties, and closing terms in South Carolina.
23 min read
Free, no-pressure assessment
See what solar looks like at your Charleston address
Tell us about your Charleston home and we’ll confirm your utility, your options, and honest numbers, with no pressure and no guaranteed-savings math.
Mon–Sat, 10am–6:30pm ET · We typically follow up within the hour.