Solar ROI Calculator Excel Template

• System Cost:

  Enter the total cost of the solar installation system, including labor, equipment, and other expenses

• Incentives/Grants:

  Input any government or private grants, tax rebates, or incentives you receive for installing the system

• Net Cost:

  Automatically calculated as System Cost - Incentives/Grants

• Electricity Cost per kWh:

  Enter your current electricity rate per kilowatt-hour (kWh)

• Average Monthly Electricity Usage:

  Provide your household's average monthly electricity consumption in kWh

• Annual Energy Savings:

  Automatically calculated as Monthly Usage × Electricity Cost × 12

• Annual Inflation Rate:

  Input the expected annual increase in electricity rates (e.g., 3%)

• Years of Operation:

  Enter how long the solar system is expected to last (e.g., 25 years)

The ROI Calculations tab automatically generates detailed financial projections based on your inputs:

• Year:

  Lists years of operation from 1 to your specified duration

• Energy Savings:

  Automatically calculates the savings for each year, adjusting for inflation

• Cumulative Savings:

  Shows how much total savings you've accumulated over time

• ROI (%):

  Calculates the return on investment as: (Cumulative Savings ÷ Net Cost) × 100