Solar estimator
Estimate your solar system in a minute.
This tool gives an indicative size only. Prices, roof conditions, shading and your exact loads are confirmed at a free site assessment.
Estimate only — not a quotation
- Solar array
- – kWp
- Panels
- – × 550 W
- Usable battery
- – kWh
- Inverter (min.)
- – kW
- Solar energy / month
- – kWh
- Est. monthly savings
- Add tariff
Based on your inputs and the assumptions shown. Inverter size depends on your real peak load and motor start-up currents, which we measure on site. No prices are implied.
How the estimate works
- Daily energy = monthly units × share covered ÷ 30.
- Array size = daily energy ÷ (peak sun hours × (1 − losses)).
- Battery = essential load × backup hours (usable capacity).
- Savings = solar energy used × your tariff, if you enter one.
Read more: How to size a solar system for your home.