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Solar savings calculator

State

Quarterly bill ($)

Solar size

Add a 13.5 kWh battery

Your usage rate (c/kWh)

Feed-in tariff (c/kWh)

Sample values loaded: a $650 quarterly bill in Queensland.

Yearly saving

Payback

Yearly output

Cost after rebates

Assumptions: about $1,000 per kW for solar and $1,050 per kWh for a battery before rebates, a $1.10 daily supply charge, and you use 30% of your solar during the day (70% with a battery). Change the rates above to match your bill.

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