South Carolina Solar Panel Savings Calculator

South Carolina Solar Panel Savings Overview

South Carolina receives an average of 5 peak sun hours per day, making it an excellent state for solar energy production. With electricity rates averaging 13.8¢ per kWh — below the national average — longer payback periods are typical but savings still add up over time. The typical South Carolina homeowner with a 6kW system can expect to save approximately $1,420 per year.

Solar Energy Production in South Carolina

A standard 6kW residential solar panel system in South Carolina produces approximately 8,760 kWh per year. This accounts for a system efficiency factor of 80%, which includes panel degradation, inverter losses, and temperature effects. At 5 peak sun hours per day, South Carolina offers good solar production — enough to offset a significant portion of typical household electricity consumption.

South Carolina Electricity Rates and Solar Context

The average residential electricity rate in South Carolina is 13.8¢ per kWh according to EIA data. While this rate is below the national average, electricity costs are rising approximately 2-3% per year. Over a 25-year system lifetime, your cumulative savings will still be substantial. With utility rates increasing annually, your solar savings grow each year.

South Carolina Solar Incentive Programs

25% state tax credit (up to $3,500). Net metering. Property tax exemption. Federal 30% ITC. All South Carolina residents are eligible for the federal 30% Investment Tax Credit (ITC), which reduces the cost of a solar system by 30% of the total installed price. South Carolina also offers full retail net metering, allowing homeowners to earn credits for excess solar energy sent back to the grid.

Net Metering in South Carolina

South Carolina has full retail net metering, which is a significant financial benefit for solar homeowners. Under full retail net metering, you receive credit at the full retail electricity rate for every kilowatt-hour of excess solar energy you export to the grid. This is the most favorable policy for solar homeowners.

Best Cities for Solar in South Carolina

The best cities for solar panels in South Carolina include Charleston, Columbia, North Charleston, Mount Pleasant, Rock Hill. Solar production can vary by location within the state due to differences in cloud cover, local shading, and microclimates. Southern-facing roofs with minimal shading produce the most energy. Homeowners in Charleston and Columbia can typically expect production close to the state average of 5 peak sun hours per day.

How South Carolina Compares to Neighboring States

Compared to neighboring states, South Carolina (13.8¢/kWh, 5 sun hours) has comparable sun exposure and has similar electricity rates. See how solar savings compare in North Carolina, and Georgia.