As of August 2026, solar can pay off in Columbia, South Carolina, but the details are local. Dominion Energy South Carolina is your utility, and new rooftop systems join its Solar Choice rider on a time-of-use rate. Power runs about 16.2 cents per kWh. South Carolina still offers a 25 percent state solar tax credit, while the 30 percent federal credit ended after December 31, 2025. Inside the city, you permit through the City of Columbia Development Center.
- Dominion Energy South Carolina is your electric utility in Columbia. The City runs its own water and sewer systems, but electricity comes from Dominion under a city franchise, so your net metering and interconnection go through Dominion (Dominion Energy South Carolina).
- New solar joins Solar Choice, not the old net metering. Dominion’s earlier retail-rate Net Energy Metering is closed to new participants; new residential systems go on the Solar Choice rider under Residential Rate 5, a time-of-use rate where the value of your exports depends on when you send power to the grid (Dominion rates and tariffs).
- South Carolina still has a 25 percent state solar tax credit. The state credit (SCDOR form TC-38) is 25 percent of system cost, capped at $3,500 per year or 50 percent of your tax liability, whichever is less, with unused credit carried forward up to 10 years (South Carolina Department of Revenue). This state credit is separate from the federal Section 25D credit, which ended after December 31, 2025.
- South Carolina residential power runs about 16.2 cents per kWh, a bit below the national average near 18 cents (EIA Electric Power Monthly, Table 5.6.A, May 2026).
- You permit through the City of Columbia inside city limits. The City of Columbia Development Center issues the building and electrical permits for solar within city limits and publishes its own solar check sheet; property in unincorporated Richland County is permitted by the county instead (City of Columbia).
- The 30 percent federal homeowner credit (Section 25D) ended for expenditures made after December 31, 2025 (IRS).
Columbia is South Carolina’s capital, set in the Midlands where the Broad and Saluda rivers join to form the Congaree. It is an inland city of hot, humid summers and heavy air-conditioning load, which is exactly the usage pattern rooftop solar is good at offsetting. But the state averages matter less here than the local details: your utility is Dominion Energy South Carolina, new systems go on the Solar Choice time-of-use rider rather than old-style net metering, and inside the city you permit through the City of Columbia Development Center. This page covers what to verify, what solar costs and produces in Columbia, how Dominion credits your solar, and the local rules that shape a project here. It is part of our South Carolina solar guide and the wider Solar by State series. MySolarFY, updated August 2026.
Your utility in Columbia is Dominion Energy South Carolina
In the City of Columbia, your electricity provider is Dominion Energy South Carolina. Columbia runs its own municipal water and sewer utilities, which sometimes confuses homeowners, but electric service, and therefore everything that matters for solar, comes from Dominion under a city franchise, not from the City itself (Dominion Energy South Carolina). That means your interconnection application, your rate schedule, and the credit you earn for exported solar all run through Dominion. For the full mechanics of how Dominion credits your solar, including the Solar Choice rider and the time-of-use structure, read our Dominion Energy South Carolina solar guide. Confirm the exact utility on your own bill before you size a system, since parts of the Midlands outside Dominion territory are served by electric cooperatives instead.
| Detail | What to know |
|---|---|
| Electric utility | Dominion Energy South Carolina (the City utility covers water and sewer, not electricity) |
| Location | South Carolina state capital, Midlands, Broad and Saluda river confluence, ZIP 29201 |
| Electricity rate | About 16.2 cents/kWh statewide (EIA, May 2026); verify your Dominion rate on a recent bill |
| Solar billing | Solar Choice rider on Residential Rate 5 time-of-use; old retail-rate Net Energy Metering closed to new participants (Dominion) |
| State tax credit | 25 percent of cost, capped at $3,500/year or 50 percent of tax liability, 10-year carryforward (SCDOR form TC-38) |
| Permitting | City of Columbia Development Center inside city limits; Richland County for unincorporated property, plus a separate Dominion interconnection |
| Federal tax credit | The 30 percent Section 25D credit ended for expenditures after December 31, 2025 |
What solar costs in Columbia, and how fast it pays back
A typical Columbia home installs about 6 kW. At a common price near $3 per watt, a 6 kW system runs about $18,000 before incentives. Your production drives the savings, so estimate your roof first with NREL’s free PVWatts calculator; actual output depends on your roof’s pitch, orientation, and shading, and Columbia’s mature tree canopy matters here. According to MySolarFY’s analysis (August 2026), a 6 kW rooftop system in Columbia (ZIP 29201) produces about 8,674 kWh a year (NREL PVWatts v8), which at South Carolina’s roughly 16.2 cents per kWh offsets about $1,400 of grid electricity annually. That points to a simple payback near 12 to 13 years on a cash system at the sticker price. The 25 percent South Carolina state tax credit, worth about $4,500 on an $18,000 system and claimed at up to $3,500 per year, can pull the net cost down toward $13,500 and the payback closer to 9 to 10 years, before financing costs and future rate changes. For the full cost-per-watt and payback breakdown by system size, see our South Carolina solar cost and payback guide.
| Input or result | Estimate (6 kW cash system, Columbia 29201) |
|---|---|
| Estimated production | About 8,674 kWh/year (NREL PVWatts v8, ZIP 29201) |
| Electricity rate | About 16.2 cents/kWh (EIA) |
| Annual bill offset | About $1,400/year |
| Typical installed cost (cash) | About $18,000 (assumes ~$3/watt; the 30 percent federal credit ended December 31, 2025) |
| State tax credit | About $4,500 (25 percent), claimed at up to $3,500/year, subject to the 50 percent liability limit |
| Estimated simple payback | About 12 to 13 years sticker, near 9 to 10 years after the state credit |
MySolarFY estimate as of August 2026, shown so you can check the math. Simple payback before rate inflation, panel degradation, and financing costs. The state tax credit depends on your tax liability, so not every homeowner captures the full amount, and Solar Choice is a time-of-use rate, so your real export value depends on when you send power to the grid. Columbia’s tree canopy can cut real production below the open-roof PVWatts figure, so get a site-specific shade estimate. Your own result depends on your usage, roof, Dominion rate, and installer quotes.
How Dominion credits your solar in Columbia
Dominion Energy South Carolina’s earlier retail-rate Net Energy Metering is closed to new participants, so a new Columbia system today goes on the Solar Choice rider under Residential Rate 5, a time-of-use rate (Dominion rates and tariffs). If net metering is new to you, our guide to how net metering works walks through the basics. The practical difference is that under a time-of-use structure the value of the power you export changes with the time of day, so when your panels produce matters more than it did under a flat retail-rate credit. That makes right-sizing your system, and sometimes pairing it with a battery, a real design decision rather than an afterthought. We break down the Solar Choice rider, the Rate 5 periods, and how exports are credited in the Dominion Energy South Carolina solar guide; confirm the current terms directly with Dominion before you sign a contract, since tariff details change.
Columbia’s local rules: permits and the state credit
Inside Columbia city limits, you permit through the City of Columbia Development Center, not Richland County. The City issues the building and electrical permits for a rooftop solar project and publishes its own solar check sheet for installers; if your property sits in unincorporated Richland County instead, the county building department handles the permit (City of Columbia). Either way, you also file a separate interconnection application with Dominion for a grid-tied system. This is one place Columbia differs from coastal Charleston, which runs its own inland-versus-shoreline review process; here in the Midlands the split that matters is simply whether your address is inside the city or in the county. On the incentive side, South Carolina still offers a 25 percent state income tax credit for residential solar (SCDOR form TC-38), capped at $3,500 per year or 50 percent of your tax liability and carried forward up to 10 years (South Carolina Department of Revenue). MySolarFY does not provide tax advice, so confirm your eligibility with a tax professional. A good local installer will handle the city or county permit, the Dominion interconnection, and the Solar Choice enrollment for you.
See what solar programs are available at your Columbia address
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Columbia solar FAQ
Who is my electric utility in Columbia, South Carolina?
Your electricity provider in the City of Columbia is Dominion Energy South Carolina. The City runs its own municipal water and sewer utilities, which can be confusing, but electric service comes from Dominion under a city franchise. That matters for solar because your interconnection application, rate schedule, and the credit you earn for exported power all run through Dominion, not the City. Some areas around the Columbia metro fall outside Dominion territory and are served by electric cooperatives instead, so always confirm the utility name on your electric bill before you size a system or sign a contract.
How does Dominion credit solar in Columbia?
Dominion Energy South Carolina’s earlier retail-rate Net Energy Metering is closed to new participants. A new Columbia system today enrolls in the Solar Choice rider under Residential Rate 5, which is a time-of-use rate. That means the value of the power your panels send to the grid depends on the time of day you export it, so right-sizing the system and, in some cases, adding a battery becomes a real design decision. Verify the current Solar Choice and Rate 5 terms directly with Dominion, since tariff details change over time.
Does South Carolina still have a solar tax credit in 2026?
Yes. South Carolina offers a state income tax credit for residential solar, claimed on SCDOR form TC-38, equal to 25 percent of the cost of purchasing and installing the system. It is capped at $3,500 per year or 50 percent of your tax liability, whichever is less, and unused credit can be carried forward up to 10 years. This state credit is separate from the federal Section 25D credit, which ended after December 31, 2025. MySolarFY does not provide tax advice, so confirm your eligibility with a tax professional and the South Carolina Department of Revenue.
Do I permit solar through the City of Columbia or Richland County?
It depends on where your home sits. Inside Columbia city limits, the City of Columbia Development Center issues the building and electrical permits for a rooftop solar project and publishes its own solar check sheet. If your property is in unincorporated Richland County, the county building department handles the permit instead. In both cases you also file a separate interconnection application with Dominion for a grid-tied system. A local installer familiar with Columbia and Richland County usually manages this paperwork for you.
Is the 30 percent federal solar tax credit gone?
Yes. The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, so a homeowner who installs solar in Columbia in 2026 cannot claim that 30 percent federal credit. State and local benefits, such as the 25 percent South Carolina state tax credit and Dominion Solar Choice export credits, do not depend on the federal credit and still apply. MySolarFY does not provide tax advice; confirm your situation with a tax professional and the IRS guidance before you count on any credit.
How much does solar cost and save in Columbia?
A typical 6 kW cash system runs about $18,000 before incentives at roughly $3 per watt. According to MySolarFY’s analysis in August 2026, that system in Columbia (ZIP 29201) produces about 8,674 kWh a year, which at South Carolina’s roughly 16.2 cents per kWh offsets about $1,400 of grid power annually, for a simple payback near 12 to 13 years at the sticker price. The 25 percent state tax credit can lower the net cost toward $13,500 and the payback toward 9 to 10 years if you can use it. Columbia’s tree canopy can lower real output, so get a site-specific shade estimate. Your own numbers depend on your roof, usage, Dominion rate, and installer quotes.
