Top Solar Companies in South Carolina (2026 Guide)

Licensing rules, Solar Choice interconnection terms, and consumer-protection actions current as of July 2026, per South Carolina LLR, the South Carolina Office of Regulatory Staff, and the North Carolina Department of Justice Pink Energy filings.

Why Your Installer Matters More in South Carolina

In many states, an installer’s job is narrow: design the system, pull a permit, mount the panels, connect to the grid. South Carolina adds three layers on top of that, and each one is a place where a weak company costs you money.

Coastal Wind and Hurricane Engineering

Homes in Charleston, Horry, and Beaufort counties sit in high-wind coastal zones, where the South Carolina building code requires roof-access pathways, setbacks, and a structural review before panels go up. Racking on a coastal roof has to be engineered for hurricane wind loading. When a system needs added structural framing to carry that load, the work triggers a separate carpenter or structural-framing license classification under state rules.

An installer who works mainly inland may quote a coastal home on standard assumptions and get the engineering wrong. The cost of that shows up later, in a failed inspection, a denied insurance claim, or hardware that does not hold. Inland roofs are simpler. The coast is where installer competence earns its keep.

Solar Choice Interconnection and Your Utility

South Carolina’s three investor-owned utilities, Dominion Energy South Carolina, Duke Energy Carolinas, and Duke Energy Progress, each run the same Solar Choice net-billing program, and each processes interconnection on its own. Under the state interconnection procedures, a residential system carries a $100 fee at 20 kW or below, a 15-business-day approval clock, and set windows for the witness test and energizing. An installer who files a clean application moves your project through on that clock. One who does not adds weeks.

Santee Cooper and the state’s electric cooperatives sit outside the Public Service Commission’s jurisdiction and run their own separate programs, which limits who can serve you and how. A company fluent in Duke’s process may have never handled a Santee Cooper interconnection. Ask which utilities a company files with before you assume yours is one of them.

Licensing Under South Carolina Law

South Carolina requires a residential builder’s license, or a specialty registration with an electrical classification, to install home solar, plus a roofing classification for roof-mounted work, under S.C. Code Section 40-11-410. Verifying that license with the Labor, Licensing and Regulation board takes minutes, and it is your first vetting step.

A NABCEP certification, the leading industry credential, is a second signal worth asking for. Neither a license nor a certification guarantees good work, but the absence of either is a reason to walk away.

What Separates Solar Installers in South Carolina

Two quotes for the same roof can differ more than the price line suggests, and the reasons are usually structural: how a company is set up, how it finances, and how it handles the parts of a project that South Carolina makes hard.

Local Crews vs National Scale

National installers bring standardized processes, wider financing menus, and the supply chain to source equipment quickly. South Carolina companies tend to know local permitting offices, the coastal engineering rules, and how each utility handles interconnection.

Neither model is better on its own. The more complicated your project, a coastal home, a historic district in Charleston, a Santee Cooper account, the more a company’s local experience is worth. A straightforward inland install on Dominion or Duke leaves more room for a national brand to do fine work. Ask who will physically be on your roof, an in-house crew or a subcontractor, and how service requests are handled after the panels are up.

Lease-Only Financing and Who Qualifies

South Carolina bans power purchase agreements, so the state’s $0-down channel is solar leases plus solar loans, a structure set by S.C. Code Section 58-27-2610. Under the state’s lease program, the export bill credits post to your utility account as the host customer, not the leasing company’s. Leases are marketed in Dominion and Duke territory but are not available to Santee Cooper or several cooperative customers, so the financing an installer can offer depends on your utility.

Loans deserve their own scrutiny. A $0-down loan can carry a hidden dealer fee that the Consumer Financial Protection Bureau found runs from 10% to 30% of the cash price, and sometimes more than 50%. That fee is the gap between the cash price and the financed price, and a direct answer about it is one of the clearest signs a company is being straight with you. If a company sells only leases, or only loans, that tells you whose product you are being sold. For the full picture on structures and terms, see how $0-down solar leases work in South Carolina.

Solar Companies in South Carolina Compared

The table below is a snapshot of the company types you are likely to meet when you collect quotes, sorted by model and best fit. It is not a ranking, and it is not a recommendation. The right company is the one that fits your roof, your utility, and your budget, and that clears the vetting steps in this guide.

Installer	Company Type	Best Fit For	What To Verify Before Signing
Palmetto Solar LLC	National installer, headquartered in North Charleston, SC	Homeowners who want an in-state national company across Dominion and Duke territory	Current LLR license classification, NABCEP certification, who performs the install locally
Palmetto State Solar	South Carolina company, founded 2016, Upstate focus	Upstate homeowners who prefer a local crew and close contact	LLR license status, coverage area, coastal engineering experience if your home needs it
Sunrun	National installer	Homeowners who want a $0-down lease and a hands-off arrangement	Lease escalator terms, who holds the export credits, subcontractor quality in your area
Regional installers (Solar Energy Partners, 8MSolar, and others)	Regional and local contractors	Homeowners comparing several local bids side by side	LLR license, complaint history through SCDCA and the BBB, warranty backing

Note: Treat this table as a starting point, not a shortlist. The company that fits your home is the one that holds the right South Carolina license, can show coastal or utility-specific experience where you need it, and answers the vetting questions below without hesitation. A recognizable name is not a substitute for any of that.

How We Evaluated These Companies

The companies here are drawn from those active in South Carolina’s residential market. This is not a ranking of every licensed contractor in the state, and South Carolina has many capable regional installers not named on this page.

We checked each company against South Carolina criteria: license classification under state law, NABCEP certification, coastal and permitting track record, and consumer-protection history. Where a company’s license status, complaint record, or warranty terms could not be confirmed from official sources, we say so and hand you the verification step rather than fill the gap with a guess.

The data sources for that vetting are public. License status comes from the Labor, Licensing and Regulation board (LLR); certification from NABCEP; complaint records from the Better Business Bureau and the South Carolina Department of Consumer Affairs (SCDCA); and lease-provider certification from the Office of Regulatory Staff. Every one of these is open to you before you sign.

A Closer Look at South Carolina Solar Installers

These write-ups cover what can be confirmed about each company, and, just as important, what cannot. Each one ends with the items to verify yourself, because license status, complaint records, and warranty terms change over time and are yours to check.

Palmetto Solar LLC

Palmetto Solar is a national installer headquartered in North Charleston, and it works across South Carolina through a local install network. Being based in the state is a point in its favor for Charleston-area and coastal projects, where knowing the local building code and utility processes matters.

Its current license classification, complaint record, and warranty terms are not things to take on faith, and its size does not settle them.

What to verify before signing: confirm the company’s current LLR license classification and that it covers roof-mounted work; ask for its NABCEP-certified staff; check its complaint history with SCDCA and the BBB; and get the workmanship and equipment warranty terms in writing, including who honors them if the company changes hands.

Palmetto State Solar

Palmetto State Solar is a South Carolina company founded in 2016, with a focus on the Upstate. Despite the near-identical name, it is a separate business from Palmetto Solar LLC above, with different ownership and a different home base. A local company centered on the Greenville and Spartanburg region can be a strong fit for homeowners on Duke Energy Carolinas who want a crew that works in their area day to day.

As with any installer, its current license status, complaint record, and warranty terms are yours to confirm rather than assume.

What to verify before signing: confirm its LLR license and classification; ask which counties and utilities it serves; if your home is on the coast, ask directly about its hurricane wind-loading and structural-framing experience; and get all warranty terms in writing.

National Installers Serving South Carolina

Several national companies sell into South Carolina, including Sunrun, Freedom Forever, Trinity Solar, Tesla, and Momentum Solar, alongside regional names such as Solar Energy Partners and 8MSolar. National brands can offer wider financing menus, including $0-down leases, and standardized equipment. The tradeoff is that the crew on your roof may be a local subcontractor, and after-sale service may run through a call center rather than a local office.

That structure is not a reason to rule them out. It is a reason to ask more pointed questions: who performs the install, who handles service, and how the warranty is honored if the sales company and the installing crew are different businesses.

What to verify before signing: the identity of the actual installing contractor and its LLR license; whether the warranty is from the manufacturer, the national brand, or the subcontractor; the full financing terms, including any lease escalator and any loan dealer fee; and the company’s SCDCA and BBB records.

Pink Energy and Why Vetting Matters in South Carolina

Careful vetting matters most because of what happens when it is skipped. Pink Energy, formerly Power Home Solar, sold thousands of systems across the Southeast before filing for Chapter 7 bankruptcy in 2022. Court records listed nearly $140 million owed to somewhere between 25,000 and 50,000 creditors, many of them homeowners left with systems that underperformed or never worked, and loans they still had to pay.

The fallout is still unresolved. As of January 1, 2026, 6,191 claims had been filed in the bankruptcy, with no distribution to creditors expected before 2027. A coalition of nine state attorneys general, including South Carolina’s, called on solar lenders to suspend payments and interest for affected customers.

The lesson is not that solar is a scam. It is that a warranty is only as good as the company standing behind it. A 25-year warranty from a company that folds in year three is worth nothing, and the homeowners holding those Pink Energy loans found that out the hard way. When you weigh two installers, financial stability and track record matter more than a longer number on a warranty certificate.

Questions to Ask Any South Carolina Solar Installer

Take this list to every consultation. The answers, and how readily a company gives them, tell you more than any brochure.

• Are you licensed with South Carolina LLR, and under what classification? Ask for the license number and confirm it covers roof-mounted work. This is your first and simplest check.
• Do you have NABCEP-certified staff? The certification is the leading industry credential, and the company should be able to name who holds it.
• Which utilities do you file interconnection with? A company that handles Dominion and Duke may not serve Santee Cooper or your cooperative. Make sure yours is on their list.
• Who will be on my roof, your crew or a subcontractor? For coastal homes especially, ask about their hurricane wind-loading and structural-framing experience.
• What is the full price, and what is the dealer fee on any financing? If they offer a $0-down loan, the fee can run from 10% to 30% of the cash price. Get the cash price and the financed price side by side.
• If this is a lease, who receives the export credits, and what is the escalator? Under the state lease program the credits post to your account, and the escalator is the clause that quietly raises your payment every year. Read it before you sign.
• What does the warranty cover, for how long, and who honors it? Separate the workmanship warranty from the equipment warranty, and ask what happens if the company is sold or closes.
• Can you share references from recent South Carolina installs? Recent, local, and specific to your utility is what you want.

If a company dodges any of these, treat that as your answer.

When Choosing an Installer Won’t Help in South Carolina

Sometimes the real answer is that no installer, however good, can make solar work for your home right now. A guide that never says that is not being straight with you.

• Your electricity use is low. Under Duke’s Solar Choice regime, a non-bypassable minimum bill applies and exports earn only a few cents per kilowatt-hour. Below 500 kWh a month, the numbers rarely work under Duke. Dominion’s gentler minimum bill shifts that line, but the principle holds: small bills leave little for solar to offset.
• Your roof is old or shaded. If your shingles have fewer than ten years of life left, replace the roof first, because removing and reinstalling a system later is a costly job. Heavy shade has the same effect on production that low usage has on savings.
• You rent, or you plan to move soon. A lease can transfer, but it can also complicate a sale, and the payback on a purchase takes years you may not have in the home.
• Your HOA prohibits solar. South Carolina has no HOA solar-access law. Bills to create one have been introduced repeatedly, most recently House Bill 4460, and none has passed. If your recorded covenants ban rooftop panels, an installer cannot override them.

If one of these fits you, community solar can be a fallback. Dominion and Santee Cooper both run community solar programs that let you earn credit for solar you do not own. You can also check whether solar pays off in South Carolina for your situation before you rule it in or out.

See Which Solar Installers Serve Your South Carolina Address

Ready to compare real quotes? Enter your ZIP code to see installers that serve your area, then bring the questions above to each consultation. You can also start with what a solar system costs in South Carolina and South Carolina’s state solar tax credit and exemptions so you know your numbers before the first sales call.

Frequently Asked Questions

References & Research Sources:

EcoGen America reviewed South Carolina contractor licensing resources, state statutes, solar policy materials, consumer finance research, consumer protection enforcement materials, professional certification resources, public complaint and review sources, and contractor profile records for this article. Sources were accessed July 9, 2026, unless another publication, release, effective, or update date is listed below.

1. South Carolina Energy Office. Licenses. Solar installer and contractor licensing resource, including South Carolina Department of Labor, Licensing and Regulation requirements for solar installations. Accessed July 9, 2026.
2. South Carolina General Assembly. South Carolina Code of Laws, Title 40, Chapter 11: Contractors. Contractor licensing statute, including Section 40-11-410, license classifications and subclassifications. Accessed July 9, 2026.
3. South Carolina Office of Regulatory Staff (ORS). South Carolina Energy Freedom Act. Solar Choice and Energy Freedom Act consumer resource. Accessed July 9, 2026.
4. South Carolina General Assembly. Act No. 62, H.3659: South Carolina Energy Freedom Act. State solar policy legislation, including amendments to Section 58-27-2610 related to leases of renewable electric generation facilities. Signed May 16, 2019. Accessed July 9, 2026.
5. Consumer Financial Protection Bureau (CFPB). Solar Financing Market: Issue Spotlight. Consumer finance research report on residential solar financing. Published August 2024. Accessed July 9, 2026.
6. North Carolina Department of Justice. Attorney General Josh Stein Calls On Five Solar Lending Companies to Suspend Loan Payments and Interest for Pink Energy Customers. Consumer protection enforcement announcement related to solar lending and Pink Energy customers. Published November 22, 2022. Accessed July 9, 2026.
7. South Carolina General Assembly. H.4460: HOA – Solar Panels. Proposed legislation related to homeowners’ association restrictions on solar energy systems. Introduced April 30, 2025. Accessed July 9, 2026.
8. North American Board of Certified Energy Practitioners (NABCEP). NABCEP Home. Solar and energy storage certification, credentialing, and professional directory resource. Accessed July 9, 2026.
9. South Carolina Department of Consumer Affairs. South Carolina Department of Consumer Affairs. Consumer complaint, licensing, and consumer protection resource. Accessed July 9, 2026.
10. Better Business Bureau (BBB). BBB.org. Business profile, consumer review, complaint, and accreditation resource. Accessed July 9, 2026.
11. BuildZoom. Palmetto Solar. Contractor profile and licensing record for Palmetto Solar in North Charleston, South Carolina. Accessed July 9, 2026.
12. BuildZoom. Palmetto State Solar. Contractor profile and licensing record for Palmetto State Solar in Piedmont, South Carolina. Accessed July 9, 2026.