Solar battery cost calculator for Australia
See what a home battery could cost after federal and state rebates, then your recommended size, savings and payback - on screen in seconds, no email wall.
- Federal + state rebates stacked
- Net cost, savings and payback
- Sources and as-of date shown
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Typical solar battery costs in Australia
Most homes pay about $7,500 to $17,000 installed before rebates. After the federal Cheaper Home Batteries Program, many land closer to $5,500 to $12,000. A common 10 kWh system often nets around $6,484-$11,484 before any state incentive.
Full solar battery cost guide for 2026 - prices by size and model
Solar battery cost by state
State and territory rebate rules change net cost. Pick your location for a tailored guide and calculator.
Solar battery guides
Longer explainers on the federal program, sizing, payback and state differences - written to be useful before you request quotes.
- Cheaper Home Batteries Program explainedA plain-English guide to the federal battery discount: how the STC rebate is calculated, what it usually knocks off installed cost, and why timing still matters.
- Add a battery to existing solarMost Australian homes with solar can add storage without replacing the whole system. This guide explains AC vs DC retrofit paths, what your current inverter means for cost, and how to size a battery for the panels you already have.
- What size solar battery do I need?Most homes land between about 8 and 13.5 kWh usable. This guide explains how evening load, solar size and backup goals change that answer - and when 20 kWh is overkill.
- What actually changes solar battery paybackPayback is not a single national number. Import rates, feed-in tariffs, how much solar you already export, and net cost after rebates move the result more than brand slogans.
- State battery rebates comparedThe federal program is national. State support is not. This guide summarises what still changes your net cost by jurisdiction in 2026.
- Tesla Powerwall 3 cost in AustraliaThe Powerwall 3 is a 13.5 kWh all-in-one home battery with an integrated inverter - one of the most searched brands in Australia. This guide covers typical installed prices, how the federal rebate applies, state-by-state net cost, and when a modular stack may be better value.
- Alpha ESS SMILE cost in AustraliaAlpha ESS SMILE is one of the most quoted modular home batteries in Australia, commonly sold at 8 and 10 kWh usable. This guide covers typical installed prices, how the federal rebate applies to each size, state net cost, inverter pairing and when SMILE beats or loses to Powerwall and Pylontech on value.
- Pylontech US5000 cost in AustraliaPylontech US5000 is one of the most installed modular battery lines in Australia, usually quoted as a stack of 4.8 kWh modules totalling about 10 kWh usable. This guide covers typical installed prices, federal rebate maths, state net cost, inverter pairing and when US5000 beats Alpha ESS and Powerwall on value.
- Enphase IQ Battery cost in AustraliaEnphase IQ Battery is the premium AC-coupled storage line designed for Enphase microinverter solar homes, commonly quoted as the IQ Battery 10T at about 10.1 kWh usable. This guide covers typical installed prices, federal rebate maths, state net cost, ecosystem pairing and when IQ Battery beats or loses to Powerwall and modular stacks on value.
- GoodWe ESA cost in AustraliaGoodWe ESA is a popular all-in-one / hybrid-class home battery in Australia, commonly quoted near 16 kWh usable. This guide covers typical installed prices, how federal rebate taper above 14 kWh changes the maths, state net cost and when ESA beats or loses to Powerwall and modular 10 kWh stacks.
- Best home batteries in AustraliaThere is no single best battery for every home. This guide compares popular Australian systems by value, retrofit friendliness, expandability and net cost after the federal rebate - so you can shortlist before requesting quotes.
- Sungrow SBR battery cost in AustraliaSungrow SBR is a modular home battery stack commonly quoted around 12.8 kWh usable. This guide covers indicative installed prices, the federal rebate on that size, and how it compares with Tesla Powerwall and other modular brands on net cost.
- BYD Battery-Box cost in AustraliaBYD Battery-Box (HVM class) is a widely installed modular battery in Australia. This guide covers indicative 11 kWh pricing, federal rebate maths, and when BYD beats or loses to Sungrow and Powerwall on net cost.
- Is a home battery worth it in Australia?A home battery is worth it when evening grid imports, tariff shape and net cost after rebates line up - not because a national average says so. This guide gives a practical yes/no framework using the same levers our calculator models.
- 10 kWh battery cost after rebateTen kilowatt-hours is one of the most searched home battery sizes in Australia. This page gives before/after rebate ranges, what the federal discount is worth on 10 kWh, and how state stacking changes the net.
- Virtual power plant (VPP) guideA virtual power plant lets your battery join a fleet that the grid can call on for exports or demand response. In Australia, VPPs can unlock one-off connection incentives, ongoing credits, or mandatory scheme rules - especially in NSW and WA. This guide explains how they work, what they pay, and what to check before you sign up.
How it works
Three quick steps from your bill to a battery decision you can trust.
Tell us about your home
Pick your state, enter your quarterly bill or daily usage, and tell us whether you already have solar and how much you want to back up.
See your number instantly
We recommend a battery size and apply the federal rebate plus your state incentive to show net cost, annual savings and payback - no email needed.
Read the guides, then decide
Use the cost guide, methodology and editorial explainers to understand rebates, sizing and payback before you speak to an installer.
Why you can trust these numbers
Most calculators hide your result behind an email form or skip the state rebate detail. We do the opposite: accurate rebate-stacking, shown instantly, with our working in the open.
Rebate-stacking accuracy
We combine the federal Cheaper Home Batteries Program (STC-based, tapered for larger systems) with the specific scheme in your state or territory - so the net cost reflects every rebate you can actually claim.
Sourced and dated
Every figure shows the official source and the date it was last verified (rebate data as of July 2026). When programs change - including the federal step-down on 1 January 2027 - we update the model.
Published methodology
Results are instant and free. Sizing, rebate stacking, savings and payback assumptions are written up on our methodology page so you can check the working yourself.
Frequently asked questions
How much does a solar battery cost in Australia?
Most home batteries cost about $7,500 to $17,000 installed before rebates in 2026. After the federal Cheaper Home Batteries Program, many households pay closer to $5,500 to $12,000 depending on size and brand. See our solar battery cost guide for price tables by size and model, then use the calculator above for a personalised net cost.
How much is the federal battery rebate in 2026?
The federal Cheaper Home Batteries Program discounts roughly $251.60 per usable kWh of battery capacity from May to December 2026, delivered as small-scale technology certificates (STCs) and applied by your installer at the point of sale. The value tapers for larger systems and steps down again on 1 January 2027, so the sooner you install the larger the discount. Read our Cheaper Home Batteries Program guide for taper rules and eligibility basics.
Which Australian states still have battery rebates in 2026?
Western Australia (Residential Battery Scheme, from $1,300) still offers an upfront state rebate that stacks with the federal program. New South Wales offers a one-off VPP incentive plus a zero-interest loan. Victoria, Queensland, South Australia and the Northern Territory have closed their state battery rebates, so you receive the federal rebate only. The ACT and Tasmania offer interest-free loans rather than upfront rebates. See our state rebate comparison guide and VPP guide for current rules by jurisdiction.
How big a home battery do I need?
Most Australian homes land between 10 and 20 kWh of usable storage. The right size depends on your daily electricity use, whether you already have solar, and how much of the home you want to back up during an outage. Read our battery sizing guide or enter your details above and the calculator recommends a size in seconds.
Is a home battery worth it in Australia?
With the federal rebate plus any state incentive, payback periods have shortened considerably. Whether a battery pays for itself depends on your electricity rate, usage pattern, existing solar and the rebates available in your state. Read our home battery worth-it guide or use the calculator above for your estimated net cost, annual savings and payback period.
Do I need to give my email to see the result?
No. The full result - battery size, rebates, net cost, savings and payback - is shown instantly on screen with no email required.
How accurate are the rebate figures?
We model the current federal Cheaper Home Batteries Program plus each state and territory scheme, and we show the date the figures were last verified along with links to the official sources. See our methodology page for the full assumption list. Results are estimates for guidance only - confirm your exact eligibility and pricing with an accredited installer.