6kW System Cost Breakdown
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Financing a 6kW solar system in Charleston? Estimate your monthly payment and total interest below.
Assumes fixed-rate loan. Actual rates vary by lender and credit score. Solar-specific loans from Mosaic, GoodLeap, or Sunlight often offer lower rates than personal loans.
Solar Resource in Charleston
Charleston (25301) receives an average of 4.19 kWh/m²/day of solar irradiance, based on latitude 38.35°N and West Virginia regional weather patterns from NREL data. At the local electricity rate of $0.125/kWh, a 6kW system generates roughly $917 per year in bill savings.
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How We Calculate Solar Costs for 25301
Costs are based on the average price per watt for West Virginia ($2.85/W), applied to a standard 6kW residential system. Solar irradiance is derived from NREL PVWatts data for latitude 38.35°N, adjusted for local weather patterns. Electricity rate uses the West Virginia EIA average of $0.125/kWh.
The 30% federal Investment Tax Credit (ITC) applies as a credit against your federal income tax liability. Many states offer additional credits; check your state's energy office for local incentives.