Solar + battery
Solar + Battery Made Simple — An Australian Homeowner's Guide (2026)
Learn how rooftop solar panels and home batteries work together to generate, store and use electricity. Understand system sizing, energy savings, blackout protection and the important questions to ask before installation.
By PlaceNest editorial team · Published 31 Oct 2026, 1:52 pm
Solar panels and home batteries can work together to help households use more of the electricity they generate and reduce reliance on grid electricity.
How solar and batteries work together
During daylight hours, rooftop solar panels generate electricity. Your home can use this electricity immediately, export surplus electricity to the grid or store some of it in a compatible battery.
When solar generation falls, stored battery energy may be used to power household appliances.
Understanding system size
- Solar panel capacity is generally measured in kilowatts (kW).
- Battery storage capacity is measured in kilowatt-hours (kWh).
- Battery output power determines how many appliances can operate simultaneously.
- Actual performance depends on weather, household consumption and system efficiency.
Savings and payback
Financial benefits depend on installation costs, electricity tariffs, feed-in credits, daily energy consumption and battery usage patterns.
A battery does not automatically guarantee savings. Compare realistic scenarios before making a purchase.
Blackout protection and safety
Not every battery provides backup power during an outage. Backup capability depends on the inverter, battery configuration and installation.
Use appropriately accredited and licensed installers and check product warranties, safety requirements and maintenance arrangements.
Read the illustrated guide
The accompanying PDF explains solar and battery energy flows, sizing, savings, warranties, incentives and practical installation considerations.
Download the guide below for diagrams, worked examples and a homeowner checklist.
Solar + Battery Made Simple — An Australian Homeowner's Guide (PDF, 101 KB)
General information only. PlaceNest's energy guides, and any estimates or incentive lists, are general information and estimates — not personalised financial advice, and not a quote. Programs, prices and rules change: check the official sources, and get written quotes from accredited installers before you decide.
PlaceNest guides are general information, not financial advice. Whether solar, a battery or an EV charger pays off depends on your home, usage and prices.