Is solar worth it in 29407 (Charleston, SC)?

With an average payback period of 10.3 years and 25-year savings of $32,875, solar panels in Charleston, South Carolina are a solid investment.

How much do solar panels cost in 29407?

The average cost of a 6kW residential solar system in Charleston, South Carolina is $13,600 before incentives. The federal 30% Investment Tax Credit reduces this to about $9,520.

How much solar electricity does 29407 get?

Charleston receives 5.36 kWh/m²/day of solar irradiance. A 6kW system in zip code 29407 produces approximately 9,391 kWh per year.

Solar Panel ROI in 29407

Charleston, South Carolina — Is solar worth it here? Here's what the data says.

2.4x ROI Score

10.3 yrs Payback Period

$1,315/yr Annual Savings

$32,875 25-Year Savings

Your savings estimate

$ /mo bill

Annual savings $1,315

Payback 10.3 yrs

25-yr savings $32,875

Solar Calculator for 29407 (Charleston)

Adjust values to see your personalized solar ROI estimate for Charleston, South Carolina.

System Size

System Cost

Electricity Rate

$ /kWh

Solar Irradiance

5.36 kWh/m²/day

Based on NREL data for Charleston, SC

ROI Score 2.4x

Annual Production 9,391 kWh

Annual Savings $1,315

Payback Period 10.3 years

25-Year Savings $32,875

After 30% ITC $9,520

Solar Data for 29407 – Charleston, SC

Solar Irradiance 5.36 kWh/m²/day +8.1% vs national avg

vs South Carolina Avg +1.5% State avg: 5.29 kWh/m²/day

Electricity Rate $0.140/kWh South Carolina average rate

Annual Production 9,391 kWh 6kW system estimate

Charleston's 5.36 kWh/m²/day is 8.1% above the national average. At $0.140/kWh, the 10.3-year payback is moderate. Tax credits and incentives can shorten it meaningfully.

Solar Incentives for Charleston, South Carolina

★

Federal Investment Tax Credit (ITC)

Claim 30% of your system cost as a federal tax credit. On a $13,600 system, that's $4,080 back.

★

Net Metering

Most South Carolina utilities offer net metering — sell excess electricity back to the grid at retail rates, accelerating your payback.

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South Carolina State Programs

Check with the South Carolina energy office for additional rebates, tax exemptions, and low-interest solar financing programs available in Charleston.

29407 vs South Carolina Average

Solar Irradiance

29407: 5.36 SC avg: 5.29

Payback Period

29407: 10.3 yrs SC avg: 11.2 yrs

Annual Savings

29407: $1,315 SC avg: $1,213

25-Year Savings

29407: $32,875 SC avg: $30,325

See the full South Carolina solar guide for statewide data and incentives.

Nearby Zip Codes — Solar Comparison

29405 North Charleston, SC 2.4x ROI 10.4 yr payback 31419 Savannah, GA 2.4x ROI 10.6 yr payback 29201 Columbia, SC 2.4x ROI 10.5 yr payback 29203 Columbia, SC 2.4x ROI 10.5 yr payback 28403 Wilmington, NC 2.1x ROI 11.8 yr payback