Solar Panels Cost $11k-$21k in Barnwell County, SC | August, 2025
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How much do solar panels cost in Barnwell County, SC in 2025?
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Going solar in Barnwell County, SC averages out to $3.39 per watt in August, 2025.
You should expect costs to be $3,390, on average, for every 1 kW (or 1000 watts) of solar energy your solar system will need to produce. We are able to come to this conclusion as a result of the rate price cost per watt above. In Barnwell County, you will pay approximately $11,865 for a 5 kW panel install after subtracting the 30% federal income tax credit. Remember, a bigger system might be required to fulfill your energy requirements effectively.
By selecting your county on the left, you can view the average roof size and the average maximum capacity for residential solar panel systems in your area. See below a full overview of the {price|costs, payback period, and 20-year average savings for a 5 kW system in your county.
Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.
Barnwell County: $11,865US Average: $12,523
Average Payback Period The number of years until you break even on the solar investment.
Barnwell County: 6 yearsUS Average: 7 years
Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.
Barnwell County: $25,542US Average: $17,429
Solar Potential in Barnwell County
Estimated system size and solar electricity production per median viable roof in Barnwell County.
Roof size 822sq. ft.
Capacity 11.5kW DC
Electricity 14.5kkWh AC per yr.
Electricity Costs in Barnwell County, SC & What that Means for Your Solar Panel Pricing
In Barnwell County, the monthly kWh usage for residents averages 1,112 kWh, with an average bill of 177.05. Keep in mind that this number includes data from both apartments and smaller homes with lower energy requirements.
As of August 2025, the mean rate for electricity per kWh in Barnwell County, SC is 15.92¢.
The estimated cost for a 9 kW solar system is $30,510 before incentives, but with a 30% federal tax credit, it drops to $21,357.
Go Solar for less than your cell phone bill.
Average solar panel costs by system size in Barnwell County
Displayed below and to the left, you can find a comprehensive pricing structure for multiple solar panel system sizes set up in Barnwell County. Larger solar installations carry a greater cost, yet they also offer increased electricity savings and higher income tax credits.
The solar panel cost calculator to the right and below analyzes costs and benefits, using an average $177.05 electric bill in Barnwell County To achieve tailored results, adjust the $177.05 to reflect your typical electricity payment.
System Size
Roof Size Min. space required
Electricity Value Annual Production
Est. Price
System Size 5kW
Roof Size Min. space required
358 ft²
Electricity Value Annual Production $1,267 a year
Est. Price
$11,865
Savings from a 5kWthis system
Est. yearly production 7,920 kWh
Est. monthly savings $106
Full payback in 6 years
Environmental Impacts
Reduces CO2 emissions by 2.7 tons a year
Equivalent to planting 124 trees a year
Equivalent to driving 6,694 mi less a year
System Size 6kW
Roof Size Min. space required
429 ft²
Electricity Value Annual Production $1,521 a year
Est. Price
$14,238
Savings from a 6kWthis system
Est. yearly production 9,504 kWh
Est. monthly savings $127
Full payback in 7 years
Environmental Impacts
Reduces CO2 emissions by 3.25 tons a year
Equivalent to planting 149 trees a year
Equivalent to driving 8,033 mi less a year
System Size 7kW
Roof Size Min. space required
501 ft²
Electricity Value Annual Production $1,774 a year
Est. Price
$16,611
Savings from a 7kWthis system
Est. yearly production 11,088 kWh
Est. monthly savings $148
Full payback in 8 years
Environmental Impacts
Reduces CO2 emissions by 3.79 tons a year
Equivalent to planting 174 trees a year
Equivalent to driving 9,371 mi less a year
System Size 8kW
Roof Size Min. space required
572 ft²
Electricity Value Annual Production $2,028 a year
Est. Price
$18,984
Savings from a 8kWthis system
Est. yearly production 12,672 kWh
Est. monthly savings $169
Full payback in 9 years
Environmental Impacts
Reduces CO2 emissions by 4.33 tons a year
Equivalent to planting 199 trees a year
Equivalent to driving 10,710 mi less a year
System Size 9kW
Roof Size Min. space required
644 ft²
Electricity Value Annual Production $2,281 a year
Est. Price
$21,357
Savings from a 9kWthis system
Est. yearly production 14,256 kWh
Est. monthly savings $177
Full payback in 10 years
Environmental Impacts
Reduces CO2 emissions by 4.53 tons a year
Equivalent to planting 208 trees a year
Equivalent to driving 11,220 mi less a year
Barnwell County Solar Panel Installation Incentives & Rebates | 2025
The REAP Grant currently offers between 80% and 100% coverage for the installation costs of photovoltaic or wind turbines for rural small businesses and agricultural businesses. Think you fit the criteria? Verify your eligibility with our REAP Grant eligibility tool.
Thanks to the 30% federal income tax credit, residential solar installations are within reach for most people, rendering solar power a feasible investment across various states. Furthermore, various state and local programs are in place to further encourage the adoption of solar power.
Multiple utilities and government agencies in South Carolina provide 10 solar rebate and incentive programs.
Solar incentives in SCIncentive Description Value
Solar Energy, Small Hydropower, and Geothermal Tax Credit (Corporate)
Value:Up to $3,500
South Carolina businesses are eligible for tax credits on the equipment and installation expenses of a new renewable energy system or energy-efficient building materials. Qualifying technologies include solar, hydroelectric, and geothermal as used to generate electricity or for heating/cooling. All system components are also eligible for credits. The credit is valued at 25% of costs up to $3,500 per property and $5,000 per company. To claim the credit, interested businesses should obtain the proper paperwork from the South Carolina Department of Revenue.
Santee Cooper - Rooftop Solar Rebate Program
Value:Up to $6,300
Residential and small commercial Santee Cooper customers may be entitled to rebates on new rooftop solar panels used for photovoltaic energy. Installations must be performed by a participating contractor and meet certain performance and safety standards. Additional information is available from the Santee Cooper website.
ConserFund Loan Program
Value:Varies
ConserFund is a loan initiative overseen by the South Carolina Energy Office. Loans support state/local agencies, public colleges and schools, and nonprofits in making energy efficiency improvements, including installing new renewable energy devices. Qualifying projects include building retrofit work, geothermal pumps, solar panels, or biomass systems. The available principal per loan varies from $25,000 to $500,000 depending on the nature of the project. The borrower has six months to begin installation from the time of the loan's disbursement. Qualifying public-sector borrowers may have 30% of their loan principal automatically forgiven.
Net Metering
Value:Varies
South Carolina electric customers using an interconnected solar or wind energy system may enter net metering agreements with their utility. Any system rated for under 20 kW (residential) or 1 MW (nonresidential) qualifies. The utility will install a bidirectional meter onto the system to measure net excess generation (NEG) sent back to the grid. Customers will receive energy bill credits for the NEG they generate at a fixed avoided-cost rate. Excess bill credits that remain at the end of the year will be paid as a lump sum. Additional information is available from individual utilities. Utilities may set their own net metering terms within a certain domain.
South Carolina Municipalities - Green Power Purchasing
Value:Varies
In 2001, Santee Cooper established a Green Power Program allowing residential customers to purchase renewably-sourced energy at $3 for a 100 kWh block. Commercial customers may purchase 200 kWh blocks at $6. Any customer-member of a South Carolina electric cooperative, as well as customers in Georgetown, may participate. Additional information is available through the Santee Cooper website.
State Building Energy Standards
Value:Varies
New government buildings in South Carolina are subject to green construction requirements. Generally, new occupied state facilities should meet or exceed the standards for LEED Silver certification. Buildings receiving two Green Globes may also meet the standards. By 2020, existing buildings should take measures to cut energy consumption by 20% from a 2000 baseline. Exceptions apply to buildings of certain types, as well as any project where it is determined that project costs would exceed gained energy efficiency. Additional information is available from the South Carolina Energy Office.
Interconnection Guidelines
Value:Varies
Distributed generation and grid interconnection practices have been standardized in South Carolina since 2006. New renewable energy systems in the South Carolina Electric and Gas, Duke Energy, and Progress Energy service areas will be organized into three regulatory tiers based on capacity. A system's tier will determine available permitting processes, fees, review turnaround time, and safety/performance standards. The state requires all interconnected systems to have multiple external disconnect switches. Non-residential system owners are required to carry at least $300,000 of liability insurance on their system.
Renewable Energy Manufacturing Tax Credit
Value:Varies
In South Carolina, tax credits are available for businesses involved in the manufacture of renewable energy equipment. Qualifying equipment includes solar, wind, biomass, geothermal, and a range of other technologies. The maximum available credit is $500,000 per year and $5 million per company. As a condition for receiving the credit, companies are required to invest a minimum amount in new manufacturing facilities, jobs, or other expenses. The required investment will vary from county to county. Additional information is available from the South Carolina Department of Commerce.
Santee Cooper - Renewable Energy Resource Loans
Value:Varies
Residential Santee Cooper customers may be eligible for special financing on new solar PV, wind, biomass, or energy-efficient water heating projects. Qualifying systems should be installed by a participating contractor and meet the requirements for grid interconnection and net billing. The maximum available principal per loan is $40,000, to be repaid over ten years at a low interest rate. To apply, customers should schedule an energy efficiency audit with a Santee Cooper representative and obtain preapproval for the interconnection of their system. Additional information is available from the Santee Cooper website.
Solar Energy, Small Hydropower, and Geothermal Tax Credit (Personal)
Value:Varies
South Carolina homeowners are eligible for tax credits on the equipment and installation expenses of a new renewable energy system or energy-efficient building materials. Qualifying technologies include solar, hydroelectric, and geothermal as used to generate electricity or for heating/cooling. All system components are also eligible for credits. The credit is valued at 25% of costs up to $3,500 per property and $5,000 per taxpayer. To claim the credit, interested homeowners should obtain the proper paperwork from the South Carolina Department of Revenue.
Are solar panels worth it in Barnwell County, SC?
If you intend to own your residence longer than the solar system's payback period, solar panels are a good investment in Barnwell County. By installing a 5 kW solar system in Barnwell County, SC, you can expect to save approximately $30,627 over 20 years, with the break even point usually being 6 years.
The cost of not having solar panels in Barnwell County, SC
Not having solar panels or any other backup energy system results in missing the earlier mentioned savings and full dependence on your electric utility for electricity. Many recent examples in the news have shown that total dependence on your utility company is not always the best option.
Annually, customers in Barnwell County have experienced approximately 1.32 utility outages.Each year, customers in Barnwell County have dealt with approximately 1.32 utility outages. On average, an outage lasts 179.87 minutes. When major events such as thunderstorms, grid management errors, or construction accidents occur, these durations can increase significantly
Take a look at the info below to see the number of current electricity customers without power in Barnwell County.
A solar energy system could help mitigate the effects of future outages, with or without a backup battery.
Power Outages
Currently, 0 customers are being tracked in Barnwell County.
What impacts the cost of solar panels in Barnwell County, SC?
Your Energy Needs - Larger solar panel setups come with a larger price tag, yet the cost per watt decreases as the size of the system grows. Individuals often realize that setting up a solar system that can cover their entire electric bill is useful, ensuring significant savings.
Make & Model - Solar panels and mounting equipment, just like many other products, are available in different makes and models. The contractor’s preference for system makes it essential to select a reputable installer. Buyers who choose high-quality materials generally enjoy a more favorable long-term experience.
Solar Panel Type - Monocrystalline panels have emerged as the industry standard, and for good reason. These panels are more costly, yet they generate more energy. Most installers tend to utilize panels made from this material.
Your Property - Each property and home has its own characteristics. Factors like trees, irregular terrain, or other hindrances can make the installation more challenging. Today, the most solar installers can assess your home with satellite images and incorporate these considerations in the initial cost estimate.
Labor Rates - Companies offer different pay rates to their employees, which are then reflected in the prices consumers pay. Higher reviews for work and customer service are generally associated with businesses that pay higher wages.
Permitting & Interconnection - Permitting and utility interconnection fees vary locally and will impact your installation cost. Reliable installers will factor these costs into your first quotes to prevent unexpected expenses.
See what solar panels cost in other Barnwell County cities
Go Solar for less than your cell phone bill.
Who are the best solar installers in Barnwell County?
As of August, 2025, the average cost for solar panels in Barnwell County, SC is $3.39/W. Installing a 5 kW solar panel system in Barnwell County, SC will cost approximately $11,865 after applying the federal tax credit.
Various utility providers and government organizations in South Carolina are offering 10 rebates and incentives at this time. Furthermore, the majority of people qualify for the 30% federal tax credit.
While paying cash provides the most savings, several financing options for solar panels exist that also make financial sense. Your preliminary quotes will usually include financing options available through installers.
Yes, in Barnwell County, SC, the average payback period for 5 kW solar panels is 6 years, resulting in average electricity savings of $30,627 over 20 years.
Savings from 
Environmental Impacts 
