Solar & Battery Sizing Calculator
Size the solar array and battery bank for an off-grid sensor site, gateway or home.
Array size (kW) = daily load ÷ (peak sun hours × system efficiency). Battery energy = daily load × days of autonomy ÷ depth of discharge. Amp-hours = battery energy ÷ battery voltage.
Results are estimates for planning and learning. Check important numbers against your own data and a qualified professional. Everything is calculated in your browser; nothing you enter is sent anywhere.