Energy · Free

Solar & Backup Power Decision Tool

Tell us what you want to keep running and for how long. We'll work out the inverter size, battery capacity, and tier of system you actually need — with realistic cost ranges for the SA market.

Step 1 — What do you want to keep running?

Tick the appliances you'd want available during load-shedding. Wattages shown are typical SA running values — actual figures vary by model.

Continuous loads (always running)

Entertainment & office

Kitchen (occasional, high-power)

These run for short bursts. They drive up inverter size but use little total energy.

Climate control & heating

Geysers and heaters are the biggest energy hogs. Most home backup systems exclude these — people usually wait for power to return.

Outdoor & utility

Running selection: 0 W

Step 2 — How long do you need backup for?

Step 3 — A bit about your situation

Important: Wattages and cost ranges shown are based on typical 2026 SA market values. Your actual system needs depend on your specific appliances, usage patterns, and roof orientation. Before purchasing, get a written quote from a registered solar installer who can do a proper site assessment, ensure compliance with municipal SSEG requirements where applicable, and provide a Certificate of Compliance (CoC). Tax-rebate calculations and other Southern African market data coming soon.

Cost ranges last verified: 9 May 2026. Spot an outdated figure? Email us — we review quarterly.