South Carolina solar panels: The complete guide in 2025
Data updated Jun 3, 2025
Thinking about going solar? In South Carolina, you’ll need a 12.31 kW system to match the average electric bill. It’ll cost you around $22,072 after the federal tax credit.
Cost for an average system in South Carolina
| Out of pocket cost, cash | $31,532 |
| Federal tax credit (30%) | - $9,460 |
| Price post tax credit | $22,072 |
| 25-year savings | Payback period | Electricity offset |
|---|---|---|
| $40,948 | 9 Years | 84% |
As long as your federal tax bill is high enough, you can take advantage of the federal investment tax credit (ITC).
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Going solar in South Carolina
South Carolina offers more than just idyllic summer getaways—it's also an ideal location for solar energy.
With plenty of sunshine throughout the year and robust solar incentives, South Carolinians can save thousands on electricity expenses by installing solar panels on their roofs.
Here's our guide to going solar in the Palmetto State.
Cost
How much do solar panels cost in South Carolina?
Solar panels will save you a lot of money over time, but the upfront costs aren't cheap. The average South Carolina homeowner needs a 12.31 kW solar panel system to cover their electricity needs, which comes out to $31,532 before incentives. Prices range from $26,802 to $36,262, but after the federal tax credit, that drops by 30%.
While this may sound high, South Carolina has tremendous local incentive programs that bring down the cost of solar. That's why over 15,000 South Carolina homeowners have used EnergySage to receive and compare quotes for solar installations. You can expect to earn back your initial solar investment through electricity savings in about 8.83 years, while most systems last at least 25 years. You'll often see this number referenced as your solar payback period.
Solar panel systems are expensive upfront purchases, but there are a few different financing options to make that initial cost more manageable.
Cash purchase: You pay for your entire system upfront. This provides the best long-term savings.
Solar loan: Enables you to maintain ownership of your system while owing little to no money upfront. When it comes to solar loans, subsidized clean energy loans through local incentive programs are usually your best bet. The next best options include a home equity loan or a personal loan—private solar loans typically come with higher interest rates or upfront fees.
Solar lease or power purchase agreement (PPA): A third-party company owns your system and either leases you the solar panels (solar lease) or allows you to purchase the electricity they generate (PPA). In general, these provide the lowest savings and garner the most negative press about solar. If you go this route, remember to read the fine print so you’re not trapped in a contract for longer than you intend.
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Incentives
What are the best solar rebates and incentives in South Carolina?
Incentives help bring solar's price tag down considerably in South Carolina. Here are the major ones to know about:
| Incentive | Average savings in South Carolina | Description |
|---|---|---|
Residential Clean Energy Tax Credit, formerly the federal investment tax credit (ITC) | $9,460 | Lowers your solar panel system's cost by 30% |
South Carolina state tax credit | $3,350 | Lowers your solar panel system’s cost by 25%, up to $35,000 total |
Santee Cooper utility rebate | $4,750 | A $0.95 per watt rebate, up to $5,700. |
South Carolina solar property tax exemption | The typical property tax in South Carolina is 0.53% | Exempt from paying property taxes on the value added by solar panels. |
Is net metering available in South Carolina?
In some states, you'll earn bill credits from your utility company when your solar panel system generates excess electricity and sends it to the grid. This incentive is known as net metering—basically a solar buyback program—and makes it so you will owe very little, or even nothing, on your electric bills with solar panels.
South Carolina does offer net metering, but it’s a bit complicated:
To qualify for net metering, you’ll need to enroll in a time-of-use rate plan with your electric utility.
Your solar credits get tallied within each time-of-use period—basically the time of day.
Energy credits do not roll over from month to month. Instead, they get converted to cash credits at a low rate.
Equipment
Equipment quality
The more efficient a solar panel is, the more power per square foot. As of 2025, the most popular solar panels have a rated output of 450 watts. To get the most out of your solar energy system, choose panels with at least that much power output.
Your solar inverter setup is also important consideration—make sure it suits your roof’s layout.
And if you’re interested in a solar battery, it’s best to choose one that integrates with that inverter.
The best equipment tends to be more expensive, but it will often save you more money in the end. Premium equipment often has the best warranty terms, guaranteeing 25-40 years of coverage for repairs, replacements, and the lowest degradation rates (meaning they’ll maintain more of their power output for longer).
Companies
Who are the best solar installers in South Carolina?
We pre-screen all of the solar companies on EnergySage to ensure they'll provide you with a high-quality installation. We then rate them based on their results, reputation, and responsiveness. Here are the highest-rated EnergySage installers in South Carolina:
Ready to start looking for a solar installer?
Here are some of the most popular ones near you:
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resources
Top solar resources for South Carolina
- South Carolina Solar Loan Providers
Search through our list of top loan providers to finance your solar panel system.
- SC Energy Office
Stay current on clean energy policies and programs in SC.
- Public Service Commission
Read more about how utility companies work in SC.
- South Carolina Electricity Profile (EIA)
Learn about SC energy production and prices.
- SC State Solar Factsheet (SEIA)
See quick stats about how much solar energy has grown in SC.
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