(—) Solar calculator

Size your system in a minute.

Start from your monthly electricity bill or list the appliances you run. We work out the inverter, battery storage and solar panels you need, then match you to a ready-made Wenergy system you can quote on straight away.

01 Your usage

Average monthly electricity bill R R300R10 000R40 000R100 000+

Your tariff per kWh On your bill — most SA homes pay R3 to R4.50 R/kWh

What do you want to run? Set how many of each and the hours per day.

LED lights9 W h/day

Fridge / freezer150 W h/day

Wi-Fi & router15 W h/day

TV & decoder130 W h/day

Laptop65 W h/day

Desktop PC & screen250 W h/day

Alarm, CCTV & gate80 W h/day

Microwave1,200 W h/day

Kettle2,000 W h/day

Stove / oven2,500 W h/day

Dishwasher1,500 W h/day

Washing machine500 W h/day

Electric geyser3,000 W h/day

Air conditioner1,500 W h/day

Heater2,000 W h/day

Pool pump1,100 W h/day

Borehole pump1,100 W h/day

Your tariff per kWh R/kWh

02 Your property

03 Your goal

When do you use the most power?

Your energy picture About 0 kWh a day, 0 kWh a month, peaking near 0 kW.

0kWpSolar panels

0kWh/dYour usage

0kWInverter

0kWhBattery

0%Solar share

0 × 620 W panels · 0 hours of essential backup

Best match

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Inverter—

Battery—

Solar—

System price—

Est. saving—/mo

Est. payback— yrs

Today5 years10 years

Pays for itself in about — years · roughly — net saving over 10 years

Get a quote for this system

Estimates only, assuming about 4.8 peak sun hours a day (South African average) and your tariff. Final sizing is confirmed after a site assessment.

(—) How we size it

Three numbers that matter.

Inverter power

How much can run at the same time. Kettles, geysers and pumps push this up; lights and Wi-Fi barely move it.

kWh

Battery storage

How long you can keep going without the grid or the sun — evenings, nights and loadshedding.

kWp

Solar panels

How much free energy you harvest each day to run the house and refill the batteries. This drives your bill savings.