Home battery storage systems

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Frequently Asked Questions

In a typical home with solar panels, part or all of your energy usage may be met by solar generation while the sun is shining. Any excess solar energy is exported to the grid. Shortfalls, most often experienced in the evening and overnight, are met by importing electricity from the grid.

A battery can help save money. When you add a battery to a rooftop solar system, or install a battery and rooftop solar panels together in a new system, the excess solar energy not used at home during the day is used to charge the battery.

There are various battery storage products available that have a wide range of functionality and performance.


Download this information pack (5.3MB pdf, 13 A4 Pages) to find answers to the most commonly asked questions:

  • What is a battery storage system?
  • How does a battery storage system work?
  • Is it a good idea to get a battery?
  • Are batteries a good investment right now?
  • Calculating the payback period
  • Does the government offer a rebate to install a home battery storage system?
  • Is my existing solar system “battery ready”?
  • Can I charge my battery overnight from the grid on an off-peak tariff?
  • What size battery do I need?
  • What’s the difference between lead- acid, lithium-ion and other types of batteries such as flow batteries?
  • Which type is suitable for my solar installation?
  • Will a battery ensure I have power during a blackout?
  • Do I need approval from the power distributor (eg: Ausnet, Powercor) to install a battery?
  • If I disconnect from the grid, will I still have to pay a daily service charge?
  • Can I use rooftop solar and batteries to charge my electric car?
  • How safe are home battery storage systems?
  • What about their environmental impact?
  • Which batteries are Australian made?
  • How do I find a reputable solar battery retailer and installer?
  • Where can I find more information and advice on installing batteries?
  • Contacts and further information
  • Tips for evaluating battery quotes



Content courtesy the Alternative Technology Association for the Borough of Queenscliffe Council, Indigo Shire Council and Towong Shire Council. The project received funding from the Victorian Department of Environment, Land, Water and Planning. 

Last updated: 17 April 2018