SunPower serves the South Carolina market from their North Charleston operations, bringing 19 years of presence in the Palmetto State. South Carolina offers one of the stronger state solar incentive packages in the Southeast, with a 25% state tax credit, sales and property tax exemptions, and net metering, making it an attractive market for quality installers.
What earned SunPower the top ranking in South Carolina was their established brand and 4.3-star rating from 465 reviews. While the rating is lower than some competitors, SunPower's proprietary high-efficiency panels, 25-year warranty, and NABCEP certification provide a level of product quality and long-term assurance that smaller local companies struggle to match.
The company helps customers maximize South Carolina's state tax credit and other incentives. Their presence in the Charleston market gives them familiarity with the coastal building codes and humidity-related considerations specific to the Lowcountry.
With a composite score of 76.6, SunPower is our top-ranked solar company in South Carolina for 2026.
“I wish I could give -5 start. We were promise that the solar panels were going to be put on Sept 8th 2025. We were called on Friday 5th and re schedule for the 22nd of Sept because they said an...”
garett h.
“Ive never written a review in my life. with that being said, i feel like i owe this to anyone considering using BRS. if you value your own sanity, do not use these clowns for anything. they are by...”
Brianna P.
“I wish I could give 0 starts. Our solar panels have not been working correctly for over 3 months and we cannot get ahold of anyone to come and check them out. We also cannot get into contact with any...”
Ashley V.
“After communicating with Blue Raven weekly for four months I feel it is time to share my experience and where we are even today. We had our roof replaced November 2024 and were told we needed to wait...”
Laura
“DO NOT USE THIS COMPANY. We have had 2 roofers come and say they messed up our roof and they REFUSE to pay to remove them. Would give 0’stars if i could.”
TJ H.
“This place is absolutely horrible. The sales people will tell you everything you want to hear, and anything you discuss regarding what you are looking for, they will agree with and tell you that they...”
Drew L.
“We have had our system for 15 months now and everything has been great! Installation was super smooth and we have loved seeing all of the electricity we generate each month! If you thinking about...”
Donna B.
“First off if you can pay your lights , don’t buy solar. If you do don’t buy from BRS. We bought 43 panels and at first they were great. Had our roof replaced and ever since they put them back on they...”
8MSolar is a locally owned solar installation company headquartered in Raleigh, North Carolina, that has expanded its service territory into South Carolina, bringing two decades of design and installation expertise to the Palmetto State's growing residential solar market. The company operates from multiple offices, including a location in Rock Hill, South Carolina, and has built its reputation on a detail-oriented approach to system design that prioritizes long-term energy production over quick sales volume.
Founded with a mission to make solar accessible and reliable across the Carolinas, 8MSolar has completed more than 2,000 installations since its inception. Their project portfolio spans residential rooftop arrays, commercial systems, and nonprofit installations. The company works with tier-one equipment manufacturers including QCells, REC, and Solaria for panels, and offers battery storage options from Tesla Powerwall, LG, and Panasonic. That equipment flexibility allows them to tailor system designs to each customer's roof geometry, shading conditions, and energy consumption patterns rather than pushing a single product line.
What sets 8MSolar apart in the South Carolina market is their NABCEP certification, a credential that remains relatively uncommon among solar installers in the state. NABCEP-certified installers have passed rigorous examinations covering system design, installation best practices, and code compliance, and they are required to maintain continuing education credits. For South Carolina homeowners navigating a solar market that is less mature than neighboring North Carolina's, working with a NABCEP-certified team provides an added layer of assurance that the system will be designed and installed to the highest industry standards.
The company's 5.0-star Google rating across 501 reviews is a standout figure that reflects consistent execution across their service territory. South Carolina's solar incentive landscape, including the federal investment tax credit and available net metering through major utilities like Duke Energy, makes the state increasingly attractive for residential solar adoption. 8MSolar's cross-state experience gives them fluency in both North and South Carolina's permitting requirements, utility interconnection processes, and incentive programs.
With a composite score of 74.5 out of 100, 8MSolar holds the second-ranked position among solar providers in South Carolina for 2026.
“I had a great experience with the team at 8MSolar. They were the price leader for my system and installed about a month ahead of schedule! Communication with the team was easy, and they did a great...”
Jaymin M.
“I had heard pretty good things about 8MSolar, from my friend and relative. After getting the quote, I end up going with 8MSolar. I am glad I went with them. The service is exemplary, no one was able...”
Peter C.
“Working with 8M Solar was awesome. Extremely professional and squared away. They did not try to add gimmicks or unnecessary complications regarding financing to the solar project. The financing was...”
Venu A.
“I’ve got my solar installation done from 8MSolar. Signed for the project in June & installation was complete by September 2025. They were prompt in all their communications, setting expectations &...”
Adam F.
“I DO NOT RECOMMEND.
***UPDATE*** As a result of your comments below. We did not request "free" We requested at cost.. meaning that whatever the equipment costs we would pay, and install for free...”
Atul G.
“I was referred to 8M Solar by a friend, but I conducted my own due diligence before selecting them for my solar panel installation. My decision to choose this company proved to be the right one.
The...”
Joseph O.
“8MSolar was a 5 star pick for our solar installation. 1) Friendly and genuine, 2) they answered all of my questions, no matter how redundant or obvious, 3) they worked with me to design a system that...”
Stephen S.
“My experience with 8M was awesome. They installed my solar panels in August and Duke approved interconnection in early October. Since then I have had no power bill and they have been working like a...”
Koala Insulation of Greenville has operated from their Piedmont base for 20 years, building a diverse home services business that now encompasses insulation, roofing, and solar installation across the Upstate South Carolina market. Their expansion into solar represents a natural extension of their energy efficiency focus, and it gives them an integrated approach that many dedicated solar installers cannot offer: the ability to assess and improve a home's overall energy envelope before designing a solar system to meet the reduced load.
Their 4.9-star Google rating from 445 reviews is an impressive metric for a company operating in a market where solar adoption is still in its growth phase. Customer feedback consistently highlights professional installation crews, transparent pricing, and the practical advantage of bundling insulation upgrades with solar projects. That bundled approach often results in better overall energy savings than solar alone, because reducing a home's energy demand first means a smaller, more cost-effective solar system can cover a larger percentage of the remaining consumption.
The company serves homeowners across the Greenville, Spartanburg, and Anderson metropolitan areas, covering much of the I-85 corridor through Upstate South Carolina. Their familiarity with local building codes, permitting processes, and utility interconnection requirements across multiple jurisdictions is a practical advantage in a region where requirements can vary significantly from one county to the next.
Koala Insulation brings the kind of home performance expertise that purely solar-focused companies often lack. Their background in insulation means they understand thermal dynamics, air sealing, and building science principles that directly affect how a solar system should be designed and sized. Zero BBB complaints over the past three years reinforces a pattern of accountability and customer satisfaction across their full range of services.
With a composite score of 73.8 out of 100, Koala Insulation of Greenville holds the third-ranked position in South Carolina for 2026.
“I just had my first interaction with Koala Insulation, and it was great! They were one of 4 names provided by Duke energy. The estimator was kind, professional, knowledgeable, and on time! Their...”
Dade
“UPDATE - After I posted this review, the owner, contacted me and asked that we address these issues and come to a resolution. I agreed and was hoping to talk. Again, however, no response. Empty...”
Joe A.
“Koala performed great job adding/fixing insulation in my attic this week. It is not often that I post reviews, but when you get great service, I want to share the news. Brian the sales rep was very...”
William J.
“I was very impressed with Koala's proposal. The owner appeared very knowledgeable about solitioning our building. Price was higher than others but with a 4.9 review status I felt quality over price...”
Content C.
“We had a great experience with Koala Insulation of Greenville! Communication was easy, their pricing was fair, they did a great job, & they traveled over an hour each way to do the job. I would...”
Megan S.
“Koala was very patient with our evolving calendar due to contractor backup as well as our many questions and quote change requests. Their work was efficient and thorough and the insulation installer...”
Andreas P.
“Many friends on Facebook recommended Koala Insulation to me. The owner came to my house and created a professional quote very quickly. His wife handled the office tasks, so this is a local,...”
Malcolm W.
“I highly recommend Koala. From the quote, to scheduling, to completion of the job and cleanup, they were very professional and friendly. The owner himself actually came out to give the quote, and he...”
State tax credit: 25% (up to $3,500)|Sales tax exemption on solar equipment|Property tax exemption for solar value|Net metering at retail rate|Palmetto Clean Energy (PCE) credits
SCE&G is under South Carolina's net metering policy, which places the cap at 2% of each utility's peak capacity. This means that the amount of solar that can ...
(E) "Net energy metering" means using metering equipment sufficient to measure the difference between the electrical energy supplied to a customer-generator by ...
Customer-generators who applied for net metering between May 16, 2019 and May 31, 2021, will receive credit at the full retail electric rate until May 31, 2029.
1. Customers must be on a time-of-use (TOU) rate. · 2. System size can't exceed your facility's demand. · 3. Interconnection requirements remain unchanged. · 4.
Net metering in South Carolina has undergone important changes for 2025. The good news is that the state has extended its net metering program through 2029, ...
In this blog post, we'll discuss why now is the perfect time to explore solar solutions for your business in North or South Carolina and what advantages lie ...
*Companies displaying 15 or more years in business are typically established electrical, roofing, or general contracting firms that expanded into solar installation in more recent years. The years shown may reflect the age of the parent organization or a strategic partner, not necessarily the solar division itself. This distinction is worth considering when comparing to dedicated solar installers, as purpose-built solar companies may offer more specialized expertise despite a shorter operating history.
