Charleston, SC
Solar Installers in Charleston, SC
What a qualified Charleston installer brings, how to compare quotes, and how to check a licence yourself.
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The solar installation market in Charleston
Charleston installers work on a wider mix of houses than most South Carolina cities.
The City issued permits for 2,804 new homes and apartments in 2025 (Fast Facts, January 2026), most on Daniel Island, Cainhoy and in West Ashley, while the Peninsula’s historic stock sits under Board of Architectural Review rules on visibility and roof penetration.
A company that mostly does new suburban roofs may not have taken a design through the BAR, and one that works the Peninsula may not know Berkeley Electric’s rider on Johns Island.
Ask about recent jobs that match your house and utility, and ask for City permit numbers for a few of them.
Which South Carolina licence covers each part of a Charleston solar job
State rules from SC LLR; the City’s permit guidance adds the business license and the limit on panel installers.
| Part of the job | Licence that covers it | Charleston note |
|---|---|---|
| Panels and their electrical system | "Solar Panel Installer" is a Residential Specialty registration with the Residential Builders Commission (SC LLR): fabricating, assembling, installing and replacing panels and related components. | The City says this registration does not allow roof mounting or framing |
| Roof attachments and racking | Roof mounting: a Residential Builder, a Residential Specialty Contractor with the Roofer classification, or a General Contractor with a roofing classification. | Must match the sealed structural letter |
| Wiring and utility connection | Wiring and connection: a Residential Builder, a licensed residential electrician, or a mechanical contractor with the electrical classification. | Pulled under the electrical sub-permit |
| Structural roof upgrades | Structural roof upgrades: a Residential Builder, a Residential Specialty Contractor with the Carpenter classification, or a General Contractor with building or structural framing. | Often needed where rafters are undersized or termite-damaged |
| Doing business in the City | City of Charleston business license | Required by the City’s solar permit guidance |
| Structural engineering | South Carolina design professional | Signs and seals the structural letter |
SC LLR Residential Specialty Contractor registration package and City of Charleston solar guidance (September 2025), retrieved 5 October 2026.
Look each licence up on the SC LLR licence search at llr.sc.gov under the Residential Builders Commission or the Contractor’s Licensing Board. How: verify a solar installer’s licence.
Types of solar companies working in Charleston
Three models show up. A full-service installer designs, permits, installs and services the system with its own licensed crews.
A sales company signs the contract and passes the work to subcontractors; ask who they are and check their licences too, because the City’s permit lists the contractors on the job.
An electrician or roofer who also installs solar may hold the right licence for part of the work and subcontract the rest. None is better by definition.
What matters is that someone holds each licence in the table above and one company is answerable for the workmanship warranty.
How Charleston installers size and price a system
A sound proposal starts from twelve months of your bills. Dominion’s Solar Choice rider limits a system to 20 kW AC and pays year-end surplus at avoided cost, so oversizing for a big annual export is a poor deal; Berkeley Electric publishes a cap of annual kWh ÷ 1,800.
Pricing is usually quoted as a total contract price, sometimes with a price per watt; the City bases its permit fee on that total, so the permit cost should appear as a line in the quote.
HyreSolar does not publish a Charleston price per watt; the fees we can verify, and example arithmetic, are on solar cost in Charleston.
Charleston solar quote comparison checklist
Put each quote beside the others and tick these off. A missing item is a question for the installer, not a reason to assume.
Dominion Solar Choice on Rate 5, or Berkeley Electric Renewable Surplus Rider.
AC must be at or under 20 kW for either rider.
Tilt, azimuth, shade and the model used.
On-peak, off-peak and super off-peak, plus the minimum bill and November payout.
Make, model and quantity of panels, inverter or microinverters, racking and any battery.
Required by the City for every array.
Who files, who pays, and what happens if the BAR refuses the layout.
Where the inverter, disconnect and battery will be mounted.
Panel, inverter and workmanship terms, and who honours each.
Side by side, so any dealer fee is visible.
Including the three-business-day right to cancel a home-solicitation sale.
Run each proposal through the proposal analyzer.
Questions to ask a Charleston solar installer
Ask who will be on your roof and under which licence, who seals the structural letter, and how many City of Charleston solar permits the company has closed.
If you are in a historic district, ask whether it has taken a design through the BAR and what it does if the Board says no.
If you are on Johns Island, ask how it confirmed your utility. Ask where the inverter and any battery will hang if your house is in a flood zone.
And ask who services the system after a named storm, and how fast.
Warranties and equipment for Charleston conditions
Two warranties matter most on the coast. The workmanship warranty covers roof leaks and loose attachments, and only the installer can honour it, so a company that may not be around in ten years makes a long warranty worth less.
Manufacturer warranties on panels and inverters may carry conditions about installation and, for some products, coastal exposure; ask the installer to show you the warranty terms for salt-air sites and to confirm that the racking is rated for the City’s 150 mph design wind. What a workmanship warranty should cover.
Batteries and financing are separate decisions: see solar battery storage in Charleston and solar financing in Charleston.
Red flags in a Charleston solar pitch
Third-party sales of electricity from a system on your property are not permitted in South Carolina.
The §25D homeowner credit is gone for systems placed in service after 2025.
New Dominion systems go on Solar Choice; legacy net metering closed to applications on 1 June 2021.
Ask for it in writing. You apply for Solar Choice through Dominion, and the City only issues permits.
You may cancel a home-solicitation sale until midnight of the third business day after signing, by written notice (SC Code §37-2-502).
The City will not issue the permit without one.
Sellers must comply with SC consumer-protection law (Title 37); the Office of Regulatory Staff can fine up to $2,500 per violation and void the agreement (SC Code §58-27-2660). The statewide rules are on solar installers in South Carolina.
Questions
Who are the best solar installers in Charleston, SC?
What licence does a solar installer need in Charleston?
How many solar quotes should I get in Charleston?
Can I cancel a solar contract signed at my door in South Carolina?
Does HyreSolar connect me with Charleston installers?
Should a Charleston installer handle the BAR application?
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