Back to Tools
Power Calculator
Estimate daily energy use in watt-hours, the inverter rating you need, and a starting point for battery and solar size.
Tick what you use and adjust the watts (draw while running) and hours (running time per day). Replace the defaults with the figures on your appliance labels.
Compressor runs part of the time; 8 h/day ≈ a mild-weather duty cycle.
Dual-zone or hot weather runs longer.
Draw depends on the setting; low settings may pulse at full power.
About 9 minutes of boiling a day.
Brew cycle only; a warming plate adds more.
A '600–700 W' microwave is rated by cooking output; it draws roughly 1,000 W.
About 3 minutes a day.
Varies widely with fan speed.
Runs only while a tap is open.