Skip to content
  • tools
  • solar roi calculator

Calculator

Solar ROI Calculator

Calculate your solar system payback period, return on investment, and 25-year net savings based on your system cost and energy profile.

Continuously maintained3 min read Focus Solar Editorial Team Reviewed for technical accuracy through the Focus Solar editorial process

Enter your system cost, current electricity rate, annual consumption, and export tariff to generate a full ROI analysis including payback period and 25-year net present value. The calculator models panel degradation and configurable electricity price escalation over the system lifetime.

YOUR INPUTS

Estimate solar payback

Adjust the assumptions. Results update immediately.
USD
Range 500–1000000
kWh/year
Range 100–1000000
USD/kWh
Range 0.01–2
%
Range 0–15
Planning estimate only

How to use this estimate

This result is an early decision aid, not an approved electrical or structural design. Weather, shading, orientation, equipment efficiency, local rules, and actual product specifications can change the outcome.

Regional differences: Costs, taxes, incentives, tariffs, and grid rules vary by location and over time.

Read the calculation methodology →