TSG Electrical
Solar & Battery Calculator

Size your system in under a minute.

Enter your usage or bill amount for an instant solar and battery size recommendation — then send it straight to us to arrange a site inspection.

1. Tell us your usage

Defaults to a typical SEQ rate — adjust to match your bill.

Include battery storage?

Guide only — assumes 4.5 peak sun hours/day (South East QLD average) and a 18% system derating for inverter and wiring losses. Final sizing depends on your roof, orientation and shading — confirmed at site inspection.

2. Your recommendation

Estimated usage
23.8 kWh/day
Recommended solar system
6.5 kW
Recommended battery
9.5 kWh

Based on ~8,690 kWh/year, this is a starting point for your conversation with us — not a final quote.

Get this confirmed on site

Send us your details and we’ll follow up to arrange a site inspection and firm quote based on your roof and actual usage.