How big a solar system do you need?

Set how many of each appliance you have and how long they run each day. The tool sizes an inverter, a battery and a panel array, and shows the sums so you can check them. It gives a starting point for a quote, not the quote itself.

Essentials

LED lights8 W

h/day
Fridge or fridge-freezer60 WAverage draw over a day; the compressor cycles on and off.

h/day
Wi-Fi router and fibre box20 W

h/day
TV and decoder120 W

h/day
Laptop or work computer65 W

h/day
Gate motor and alarm40 W

h/day
Phone chargers10 W

h/day

Kitchen

Microwave1 100 W

h/day
Kettle2 000 W

h/day
Dishwasher1 800 W

h/day
Washing machine500 W

h/day

Outside

Pool pump750 W

h/day
Borehole pump1 100 W

h/day

Comfort

Air conditioner (inverter type)1 200 W

h/day
Electric geyser3 000 WUsually better on a timer from the panels at midday, or a solar geyser.

h/day

Backup Hours the battery must carry these loads4 hours

Want to do it by hand?

The guide How much solar do I need? walks through the same four steps with worked examples.