South Carolina Solar Incentives (2026): SC Tax Credit & Utility Programs

South Carolina State Income Tax Credit (TC-38)

South Carolina offers an income tax credit for taxpayers who own and install a qualifying solar energy system (as well as certain small hydropower and geothermal equipment). The credit is generally 25% of the cost of purchasing and installing the system, with an annual limitation that can cap how much you can use in a given tax year. The Department of Revenue's TC-38 materials also describe a carryforward window for unused credit.

What this means in real life is that the credit can be valuable, but your actual benefit depends on your South Carolina tax liability and how the annual limit interacts with your project cost. If you're planning Solar Installation late in the year, it's smart to line up documentation early so you can claim the credit cleanly at tax time.

Property Tax Exemption for Certain Small Renewable Energy Systems

South Carolina law provides a property tax exemption for certain "renewable energy resource property" with a nameplate capacity not greater than 20 kW AC (as defined in the statute).

Homeowners often care about this because solar can increase a home's market value, and in some states that can also increase taxable assessed value. In South Carolina, this exemption can help limit that property-tax impact when you meet the qualifying size definition in the law.

Utility Billing Credits, Net Metering, and Why Your Utility Territory Matters

In South Carolina, "net metering" is not one single statewide rate. Instead, your bill credit structure depends on the tariff your utility currently offers and when you apply.

For example, Dominion Energy South Carolina publishes a "Third Net Energy Metering" rider that lays out eligibility, enrollment timing, and how billing credits work for customer-generators. Dominion also maintains a central "Rates and Tariffs" hub where these riders and related solar options are listed.

If you're comparing Solar Incentives across the state, it helps to treat utility tariffs as the "monthly savings engine." Even with a strong tax credit, the long-term economics can swing based on export credit rates, true-up rules, and whether the utility offers alternative options (like a bill credit agreement or solar choice tariff).

If you want a quick baseline before you dive into your utility's tariff PDFs, start with incentive programs that can reduce your upfront cost and then come back to your specific utility's program rules.

Santee Cooper Solar Rebate (EmpowerSolar)

If you're in Santee Cooper territory, EmpowerSolar can provide an upfront rebate for qualifying projects. Santee Cooper's program materials describe a rebate of $950 per kW up to $5,700 for qualifying residential systems, with a defined process for interconnection and final acceptance.

Because rebate programs can change or pause based on funding and program design, it's worth confirming current requirements (including documentation and any contractor/trade ally steps) before you sign a Solar Installation contract.

Federal Solar Incentives Update for 2026

Many homeowners still ask about the federal Residential Clean Energy Credit for solar. As of early 2026, the IRS's Residential Clean Energy Credit page states the credit applies to qualifying property installed from 2022 through December 31, 2025, and is not available for property placed in service after December 31, 2025.

If your system was placed in service by the end of 2025, you may still be able to claim the credit (depending on your tax situation), but for 2026 projects you should plan primarily around South Carolina Solar Incentives and your utility's tariff economics.

How Solar Installation Choices Affect Your Incentives

Solar Installation isn't just "panels on a roof." Incentive eligibility and long-term savings can be affected by system size, ownership structure, and interconnection timing.

A few examples that commonly matter in South Carolina:

• If you want the state income tax credit, you'll want clean proof of purchase and installation costs and the right state form support.
• If you want the property tax exemption, system sizing (especially whether it's at or under the 20 kW AC threshold referenced in law) can matter.
• If you want the best monthly bill results, you need the correct utility tariff and a properly completed interconnection process (which is utility-specific).

What Are Needed for Solar Installation in South Carolina?

Homeowners often search for "what are needed for solar installation" because incentives and interconnection both come with documentation. In practice, you'll usually need:

• A roof (or site) that can support the system. Age, shading, and layout affect design, and some utilities require equipment specifications that match the interconnection application.
• An electrical panel that can accommodate a solar backfeed connection. Many homes need a panel upgrade or a service change, and that can affect project timing and permitting.
• Permits and inspections. Most Solar Installation projects require local building/electrical permits and a final inspection before permission to operate.
• Utility interconnection approval. This is where net metering/net billing (or similar tariffs) actually gets applied. Your installer typically submits the application, but you should ask to see the final approved interconnection documents.
• Equipment documentation. Keep invoices, spec sheets, and commissioning documents. These help with tax forms and can be useful if you ever need to confirm system configuration for a utility program.
• HOA or historic district approval (when applicable). If your neighborhood has architectural rules, resolve them early so you don't risk missing an enrollment window for a utility program.

If you treat incentives as a "paper trail project" from day one, you're much less likely to lose value due to missing forms or delayed approvals.

How to Compare Solar Companies Without Getting Burned

When evaluating Solar Companies, focus less on sales promises and more on contract details that tie directly to incentives and performance.

Ask each contractor to explain which tariff they're modeling for your utility and whether the quote assumes exporting a lot of energy or maximizing self-consumption. Confirm who handles permitting and interconnection, what happens if approval takes longer than expected, and whether the proposal includes any electrical upgrades (like a main panel upgrade).

Also review workmanship warranty length, equipment warranties, and monitoring access. A slightly higher-priced bid can sometimes be a better value if it includes critical electrical work, better production assumptions, or a clearer path to claiming Solar Incentives correctly.

FAQ: South Carolina Solar Incentives