Solar System Size Calculator
Calculate how many solar panels and battery backup you need based on your electricity usage and sun hours.
Calculate the right solar system size for your home or business. Enter your monthly electricity consumption, select your inverter type, and get your system size, panel count, and battery backup estimate.
Calculation: System kW = Daily kWh ÷ Peak Sun Hours. Panels = System kW ÷ Panel kW rating.
System Inputs
Check your electricity bill for your monthly kWh usage.
Selected: 6.5 peak sun hours/day.