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Is a battery right for me and what size do I need?

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Is a battery right for me and what size do I need?

Is a battery right for me?

Is a battery/solar right for me?

Battery storage is an exciting new technology, but there are a few things to consider before making an investment in a battery for your home.
As a guide, you’ll need to consider:

  • Your electricity usage. How large is your house and what appliances do you want to run from your battery?
  • What is the cost of the battery system (including installation and maintenance costs) you are looking to purchase, and how long will it take to recoup those costs from your expected energy savings?
  • If you already have a solar system, you’ll need to find out what battery systems work best with your existing solar system as this may affect the price.
  • You may also wish to speak to your retailer about how adding a battery may affect any feed-in tariff you currently receive.

Different systems suit different needs so it’s important to talk to a qualified System Provider when doing your research.

The Home Battery Scheme helps you save money

How much will I save?

How much you could save on your energy bills depends on a number of factors including the output of your solar system and capacity of the battery, as well as the amount of energy your household uses and what time of day you use energy the most.

It is important for all households to consider whether the expected energy savings over the life of the battery will cover the cost of purchase.

Households should seek detailed analysis from a number of qualified System Providers when obtaining quotes for a home battery system.

In the meantime, if you are concerned about your energy bills, you can find helpful advice and information about energy use in your home and how you may be able to better manage it at

Home Battery Scheme makes Home Batteries more affordable

Can I afford it?

The cost of a home battery system varies depending on the size of the battery and whether you need new or additional solar panels. As a guide, the cost of a home battery (before the subsidy is applied) can range between $6,000 and $13,000, including installation.

The subsidy is calculated on the kilowatt hour capacity of the battery – meaning the bigger the battery, the larger the subsidy. South Australian Energy Concession holders are able to access a subsidy of $600 per kWh. Non-concession holders can access $500 per kWh. For example, a battery with 5kWh of energy storage capacity could receive a $2500 subsidy, or $3000 if you are an energy concession holder.

Subject to credit approval, low interest loans are available to assist participating households pay for the balance of the battery and new solar panels if required. When applying for the subsidy, a loan application can be made through RateSetter – the administrator of the Home Battery Scheme subsidy and $100 million in finance provided by the Clean Energy Finance Corporation.

What size battery is right for me?

This simple self-assessment tool is designed to give you an idea what size battery system your home could benefit from most. Use this tool as a starting point in talking to a qualified system provider about what size system is right for you. If you don’t already have a solar system, we suggest you start by selecting a 5kW system and then talk to a qualified System Provider about your average energy use to determine what size system is right for you.

Solar size


Based on the details you entered, we suggest you talk to a system provider about the following size battery:


Household storage: < 5kWh
Subsidy: up to $3,000
$500/kWh for non-concession
$600/kWh for concession.
Price: from $4,400


Household storage: 5.6 to 9.5kWh
Subsidy: up to $5,700
$500/kWh for non-concession
$600/kWh for concession
Price: from $5,600


Household storage: > 9.5 kwH
Subsidy: up to $6,000
$500/kWh for non-concession
$600/kWh for concession
Price: from $9,000

Get started today

Save up to $6,000 on the cost of a home battery.