Six short steps. Change any number and every step below updates. Finance uses the rate sheet's live lender rates.
Your monthly driving sets how much charging energy you need
Most EVs: 15–20
Your EV needs about 300 kWh a month from the wall (charging losses included).
Real monthly sunlight for your site from PVGIS (EU JRC)
South is negative, e.g. −26.14
Using 125 kWh/kWp/month until you fetch sunlight data. Fetching it makes the quote honest for your roof.
Panels at 620 W, 3 m² each
Fits your 40 m² roof with room to spare.
This covers your EV's charging energy over a month. Sunlight while the car is parked still needs a battery or grid arrangement, and it excludes your household use.
R50.30 per Wp installed · 4 × 620 W = 2.48 kWp
Real quoted total; 0 falls back to the build-up below
Default price: JC Solar 8 kW Solis + 10 kWh battery + 8.64 kWp, installed in Gauteng incl. CoC — R124,753 listed (checked 21 Oct 2026). Replace it with your own installer's quote.
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Four situations, all-in monthly household cash outflow. Fuel R3 403/month today.
EV + solar saves R742/month vs petrol/diesel + grid
Solar loan R2 311/month on R124 753. Finance is hypothetical and subject to lender approval.
No car change — just your roof working
Solar alone trims about R1 418/month off what you pay Eskom and the petrol pump.
Solar saves money on your bill; it doesn't pay you an income. Feed-in needs council registration, and export rates are small.
Keep the numbers or talk to us
A consultant can check your roof, confirm the installer price and shop your finance to our partners.
We'll come back to you with real numbers for your home.
Take the next step
Drop your details and one of our consultants will give you a call to check your numbers properly.
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No obligation. No guaranteed savings.