How solar saves you money, and how a battery saves you more

Solar savings come from two places: power you didn’t have to buy, and power you sold back. They are not worth the same amount, and that difference drives almost every system design decision.

Self-consumption: the big lever

Every kilowatt-hour of solar you use directly replaces one you’d have bought at 25–35c. Running the dishwasher, pool pump and hot water during the day shifts load into your own generation window and is the cheapest optimisation there is.

Feed-in credits: the small lever

Exports earn around 4–6c per kWh in South East Queensland. Worth having, but roughly a fifth of the value of self-consumed power. A system designed purely to export is leaving money on the table.

Where the battery fits

A battery converts low-value exports into high-value self-consumption by time-shifting your solar into the evening. It also unlocks time-of-use strategies: charge cheap, discharge at peak.

What a typical bill looks like

A well-sized solar and battery system in Brisbane routinely takes a $600 quarterly bill down to under $100, with the remainder mostly daily supply charges. The exact number depends on usage patterns, which is why we model from your interval data before quoting.