Solar Calculator: Size Your System

1. Choose the appliances you want to power

Tap each appliance you use. You can change quantities and hours in step 2, or add your own appliance.

General Household

Kitchen

Laundry

Office and Recreation

Power Tools

2. Check how you use them

We have filled in typical figures. Change the quantity, watts or hours to match your home or business. Fridges and freezers run all day but only switch on part of the time, which we allow for.

Appliance	Quantity	Watts (each)	Hours per day	kWh per day	Remove

No appliances chosen yet.

3. Tell us about the site

Where will the system be installed?

I know my site’s peak sun hours

hours per day (overrides the province)

How many of these appliances run at the same time?

How long should the batteries keep you running without sun?

Extra days of battery backup add more to the price than anything else.

Power supply Not sure Single-phase 3-phase

Where will the inverter and batteries go? Indoors or under cover Outdoors

Your suggested system

Choose at least one appliance to see your system and price.

Please note: this is an automatic estimate for guidance only, not a quotation. Prices include GST, exclude installation, and include free delivery within Port Moresby. Final sizing, string design and pricing are confirmed by our team.