How Much Does Solar Cost in South Carolina? 2026 Pricing Guide

South Carolina offers one of the most attractive combinations of solar incentives in the Southeast — a state tax credit stacked on top of the federal credit, good sun hours, and net metering protections through multiple utilities. If you’re a South Carolina homeowner thinking about solar in 2026, the financial picture is genuinely compelling.

Here’s what you need to know about real solar costs in South Carolina.

Solar Panel Cost in South Carolina

South Carolina’s installed solar costs are close to the Southeast average. Expect:

• $2.65–$3.35 per watt installed (before incentives)
• 6 kW system: $15,900–$20,100
• 8 kW system: $21,200–$26,800
• 10 kW system: $26,500–$33,500
• 12 kW system: $31,800–$40,200

But here’s where South Carolina separates itself: the combination of state and federal incentives brings these costs down significantly.

South Carolina Solar Incentives: The Best in the Southeast

South Carolina has an unusually strong incentive stack for solar:

Federal Investment Tax Credit (30%)

The 30% federal ITC applies nationwide and is the biggest driver of solar affordability in SC as everywhere. On a $25,000 system, that’s $7,500 back at tax time.

South Carolina State Tax Credit (25%)

This is what makes South Carolina exceptional: the state offers a 25% state income tax credit on the cost of a solar installation. This credit is capped at $35,000 per system and can be spread over 10 years if you can’t use it all in year one.

That means South Carolina homeowners can claim up to 55% of their solar system cost between state and federal credits. On a $25,000 system:

• Federal credit (30%): -$7,500
• SC state credit (25%): -$6,250
• Total credits: -$13,750
• Net out-of-pocket: $11,250

That’s a 55% reduction in cost before accounting for any energy savings. No other state in the South comes close to this incentive level.

SC Property Tax Exemption

Solar energy systems are exempt from property tax assessment in South Carolina. Your tax bill won’t rise because you installed solar.

SC Sales Tax Exemption

Solar energy systems and components are exempt from South Carolina’s state sales tax.

Net Metering in South Carolina

South Carolina requires investor-owned utilities (Dominion Energy SC, Duke Energy Carolinas, Duke Energy Progress) to provide net metering. Excess energy is credited at the retail rate — meaning you get full value for what you send to the grid. Duke Energy’s SC customers even have access to a time-of-use net metering option that can improve economics for homeowners who shift usage to off-peak hours.

South Carolina Solar Resource

South Carolina averages 5.0–5.4 peak sun hours per day depending on location. The Midlands and Lowcountry (Columbia, Charleston, Myrtle Beach) are at the higher end of that range. The Upstate (Greenville, Spartanburg) sees slightly less sun due to elevation and weather patterns, but still ranks well nationally.

A properly installed 8 kW system in Columbia will produce approximately 9,500–11,000 kWh per year. The average South Carolina household uses around 12,000 kWh annually, making 8–12 kW the typical right-size range depending on home size and usage.

Battery Storage in South Carolina: Hurricane and Storm Preparedness

South Carolina’s coastal areas face significant hurricane risk, and inland areas are no strangers to severe thunderstorms and ice storms (particularly in the Upstate). Battery storage paired with solar creates real resilience for SC homeowners.

A home battery like the EcoFlow PowerOcean integrates with your solar system and keeps essential circuits running during grid outages. It charges from your panels during daylight hours, powers your home through the night, and automatically operates as an island when the grid goes down. For coastal SC homeowners who’ve experienced hurricane evacuations followed by extended outage periods, this kind of energy independence is meaningful.

Battery storage systems qualify for the 30% federal tax credit and may also qualify for the South Carolina 25% state credit — ask your installer to confirm how the credits apply to the battery portion of your installation.

Portable Solar Power: A Smart First Step

For South Carolina homeowners who want immediate backup capability without committing to a full installation, portable solar generators from AnkerSOLIX provide meaningful capacity without permits or installation. High-capacity units can power refrigerators, fans, medical equipment, and phone chargers through extended outages, and can be recharged via portable solar panels when the grid is down.

This is a practical option for SC homeowners in hurricane evacuation zones who want something they can take with them, or use in place at home during shorter outages.

Solar Payback Period in South Carolina

South Carolina’s combination of strong incentives and full net metering creates among the best payback scenarios in the Southeast:

• System cost (8 kW): $23,000
• Federal tax credit (30%): -$6,900
• SC state tax credit (25%): -$5,750
• Total credits: -$12,650
• Net cost: $10,350
• Annual savings (net metering at retail): $1,400–$1,900
• Payback period: 5.5–7.4 years

A payback period under 7 years with 18+ years of remaining system life is an exceptional return on investment. South Carolina’s incentive stack makes solar one of the better financial moves a homeowner can make in the state.

What to Know When Shopping for Solar in South Carolina

Verify SC Contractor’s License

South Carolina requires solar installers to be licensed electrical contractors. Verify any installer you consider holds a valid South Carolina Electrical Contractor license through the SC Labor, Licensing and Regulation (LLR) board.

Understand the State Credit Timing

The 25% SC state credit can be claimed over up to 10 years. If your state tax liability is $2,000/year, you’ll apply $2,000 of the credit annually until it’s used up. Make sure you understand this timing when evaluating your first-year out-of-pocket cost.

Get Multiple Quotes

The South Carolina solar market is growing rapidly. Prices vary — get at least three quotes, compare on cost-per-watt, and verify production estimates in kWh (not just dollar savings, since those change with utility rates).

Ask About Dominion vs. Duke Interconnection

Dominion Energy SC and Duke Energy have different interconnection processes and timelines. Ask your installer specifically how long they expect interconnection to take for your utility — it can affect when you start generating savings.

Is Solar Worth It in South Carolina?

For most South Carolina homeowners with good roof exposure and a monthly electric bill above $100: this is one of the most compelling solar markets in the entire Southeast. The 55% combined credit stack, full retail net metering, property and sales tax exemptions, and solid solar resource create a financial case that’s hard to match.

The payback periods achievable in SC — often 5–8 years — put it in the same tier as top solar states like Arizona, California, and Hawaii. If you’ve been on the fence about solar, South Carolina’s incentive environment in 2026 is about as favorable as it’s going to get.

Your Next Steps

Gather 12 months of electricity bills to establish your average usage. Get quotes from at least three SC-licensed solar installers. Ask each one to break out the system cost in dollars per watt, the expected production in kWh per year, and a clear explanation of how both the federal and state credits apply to your specific installation.

If battery backup is a consideration (and for coastal SC homeowners, it probably should be), ask for a quote that includes storage alongside the solar-only option. The EcoFlow whole-home storage solutions are worth reviewing as part of that conversation.

And talk to your tax advisor — the interaction between the federal credit, the SC state credit, and your personal tax situation is worth understanding before you sign anything.