Solar Panel Calculator: Estimate Your Savings & ROI

Calculate Your Solar Panel Investment

Your average monthly electricity usage in kilowatt-hours.
$
Your current average cost per kilowatt-hour.
The capacity of the solar system you are considering (e.g., 8 kW for an average home).
$
Total cost of solar panel installation before any tax credits or rebates.
%
The percentage of the federal investment tax credit (currently 30% for most residential).
Average annual kilowatt-hours produced per kW of solar panels (varies by location and sun hours).
%
Estimated annual percentage increase in your electricity rates.
Unlock the power of solar energy with our easy-to-use Solar Panel Calculator. Estimate your potential savings, system cost, and payback period. Discover how much you can save on electricity bills by going solar and make an informed decision for a sustainable future. Get instant financial projections for your home's solar investment today!

Formula:

The Solar Panel Calculator estimates your financial returns based on your inputs. Key calculations include:

  • Annual Solar Production (kWh): `System Size (kW) * Annual Production Factor (kWh/kW/year)`
  • Net System Cost: `Total System Cost * (1 - Federal Tax Credit %)`
  • First Year Savings: `Min(Annual Solar Production, Annual Consumption) * Initial Cost Per kWh`
  • Simple Payback Period: `Net System Cost / First Year Savings`
  • 25-Year Total Savings: Iterative calculation factoring in `Annual Electricity Price Increase %`

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