South Carolina delivers strong solar economics with good sun hours, state tax credits, and Duke Energy's net metering program.
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South Carolina offers excellent solar economics: With 4.7 daily peak sun hours and 13¢/kWh electricity rates, the Palmetto State provides strong conditions for solar adoption. Duke Energy serves much of the state with net metering, and state tax credits enhance returns.
For Charleston, Columbia, and Greenville residents, solar systems typically pay for themselves in 9-11 years. Good sun exposure and state incentives make South Carolina a top solar market.
| Incentive | Amount | Status |
|---|---|---|
| Federal ITC | 30% of system cost | Active |
| SC State Tax Credit | 25% up to $5,250 | Active |
| Duke Energy Net Metering | Full retail rate | Active |
| Property Tax Exemption | 100% of added value | Active |
| System size | Gross cost | After all incentives | Annual savings | Payback |
|---|---|---|---|---|
| 6 kW | $17,400 | $7,830 | ~$1,230/yr | ~6.4 years |
| 8 kW | $23,200 | $10,440 | ~$1,640/yr | ~6.4 years |