Solar System Calculator
Tap the appliances you use, then fine-tune the details.
STEP 1Tap to add
Tap an appliance above to build your system.
Solar Questions, Answered
Add every appliance you want to run, then set how many hours a day each one runs. The calculator multiplies watts by hours by quantity to get your daily energy use in kWh, then sizes your battery, inverter and panels from that number. Be honest with the hours. Guessing low is the number one reason people end up with a system that dies at 2am.