Solar Panel Break-Even Calculator

Enter your solar panel specs, daily energy usage, and peak power demand to calculate your payback period

Required Solar Capacity
0 W
Total Solar Cost
R0
Annual Grid Cost
R0
Payback Period
0 years

Key Assumptions

  • Peak power demand (W) sets the minimum solar system size (to handle worst-case load)
  • Daily energy usage (Wh) determines your actual electricity consumption and savings
  • Solar panels operate at 100% capacity 24/7 (no night, clouds, or efficiency losses)
  • No installation, inverter, battery, tax, permitting, or maintenance costs included
  • Electricity rates and panel performance remain constant over time