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The 10 Best Solar Installers in Charleston (2026)
Charleston homeowners and businesses are increasingly exploring solar as a practical option for cutting energy use and protecting against rising utility bills. This list is built from Google review data and updated for 2026 using a Bayesian-style weighting that balances average rating with review volume, so highly rated firms with many reviews rise to the top. We focused on companies that show up in Charleston area searches and present clear Google categories, then ranked them objectively by score. Use this guide to compare reputable local options and to start the next steps of quoting, permitting, and installation planning in the Charleston market.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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U.S. Renewable Power
U.S. Renewable Power takes the top spot by combining a perfect 5.0 Google rating with a substantial review total — 82 reviews — among solar-listed firms in Charleston. It appears on Google as a Solar energy company and is listed at 677 King St in Charleston. In our Bayesian-style ranking, that mix of a flawless score and strong review volume pushes it to number one.
The full ranking
Solar Reflection of Charleston
Solar Reflection of Charleston holds a 5.0 rating based on 73 reviews and appears in Google as a Window tinting service in Charleston.
73 reviews
Shine Construction, LLC
Shine Construction, LLC is listed as a General contractor with a 5.0 Google rating from 44 reviews and a Charleston address on Brandam Lane (zip 29492).
44 reviews
U.S. Solar Contractors
U.S. Solar Contractors carries a 5.0 rating from 42 reviews and is recorded on Google as a Solar energy company at 460 King St in Charleston.
42 reviews
Rose Energy LLC
Rose Energy LLC is a Solar energy company in North Charleston with a 5.0 Google rating drawn from 36 reviews at 6650 Rivers Ave.
36 reviews
Legacy Solar Solutions
Legacy Solar Solutions appears as a Solar energy company in Charleston with a 5.0 rating based on 35 Google reviews and a Palomino Court address.
35 reviews
Boss Energy
Boss Energy is listed as a Solar energy company with a 4.9 Google rating from 143 reviews, using a Dorchester Road address in Charleston.
143 reviews
Live Oak Energy Systems
Live Oak Energy Systems has a 4.9 Google rating backed by 139 reviews and is categorized as a Solar energy system service located in Ladson.
139 reviews
Cornerstone Construction – Roofing & Solar
Cornerstone Construction – Roofing & Solar shows a 5.0 rating from 29 reviews and is listed as a Roofing contractor with a Charleston address on Gardner Road.
29 reviews
Second Sunrise Solar
Second Sunrise Solar is a Solar energy company in Mt Pleasant with a 4.9 Google rating from 63 reviews, located on Long Point Road.
63 reviews
Frequently asked questions
How should I choose a solar installer in Charleston?
Look at verified customer reviews, the installer’s Google rating and review count, and whether they are listed under relevant Google categories. Also check licenses, local references, and whether the company is experienced with Charleston permitting and any historic-district regulations that may apply to your property.
What does a typical residential solar installation cost?
Costs vary widely depending on system size, roof complexity, equipment quality, and any battery or electrical upgrades. Request multiple detailed quotes that break down equipment, labor, permits, and warranty terms so you can compare apples-to-apples.
What should I check before hiring a solar company?
Verify the company’s business license, insurance, and any local certifications; ask for recent references and examples of completed installations; and confirm warranty coverage for both equipment and installation work. Also get a written proposal that lists timeline, milestones, and payment schedule.
How was this ranking compiled and updated?
This list is based on Google review data and uses a Bayesian-style weighting that balances average rating with the number of reviews, updated for 2026. The method favors firms that combine high ratings with meaningful review volume to reduce the impact of small sample sizes.