Your solar panels work hard all day. Then the sun goes down, your house switches to the grid, and you buy back power at the worst price of the day. A battery stores your own cheap daytime power for the evening peak instead.
The catch used to be the upfront cost. The federal Cheaper Home Batteries Program changed that in 2025. It takes thousands off a battery at the point of install, in every WA postcode, with no income test.
Two things make WA different. WA still runs its own Residential Battery Scheme on top of the federal rebate, and there is also a WA interest-free loan up to $10,000 to cover the rest. The state scheme is capped, so it is the part most likely to run out first.
Here is exactly what WA homes can claim in 2026, and how to see your number in 30 seconds.
Check your battery price by size
Pick your home size and the check returns your after-rebate battery price for your WA postcode. It reads the live federal rebate and flags the state scheme, so the number is current today.
At a glance
What every WA home gets (federal)
The federal Cheaper Home Batteries Program applies in every WA postcode. A 10 kWh battery in Perth gets up to around $2,700 off at install. The exact figure depends on your battery's usable size and the current certificate price, so the check gives you your real number.
The rebate is paid per usable kWh and tapers as the battery gets bigger. Most home batteries sit in the top band. Bigger is not always better value once you pass about 14 kWh, which the sizing check accounts for.
Full federal-side detail in the pillar guide: Battery Rebate Australia 2026.
What WA adds on top (and why it runs out)
WA runs the Residential Battery Scheme, a state rebate that stacks on top of the federal one. The amount depends on your network. Synergy customers (Perth metro and most of the south-west grid) get up to around $1,300. Horizon customers (regional WA) get up to around $3,800.
On top of the rebate, WA offers an interest-free loan of up to $10,000 to cover the rest of the battery cost, for households under a $210,000 income test. That can take most homes to little or no upfront cash.
Here is the catch. The state scheme has a capped allocation of around 100,000 systems statewide, and it is running down. The federal rebate keeps going either way, but the WA top-up is the part that can close once the allocation is gone. The check shows your federal number first, then whether the state scheme still has room for your postcode.
See your WA after-rebate battery price
30 secs · Free · No obligationDo you qualify?
Most WA homes do. You qualify for the federal rebate if you have solar (existing or new), install a battery between 5 and 100 kWh through an accredited installer, and pick a battery on the approved product list. There is no income test on the federal side, and the battery must be VPP-capable.
The WA state rebate needs you to be a Synergy or Horizon customer and to enrol the battery in a Virtual Power Plant. The interest-free loan adds the $210,000 income test. Perth metro plus regional centres like Bunbury, Geraldton and Karratha are covered. The 30-second check confirms your postcode and which extras apply.
Worked example: 10 kWh battery in Perth
Perth home on Synergy, existing 6.6 kW solar, adding a 10 kWh battery and claiming the WA state rebate on top of the federal one.
Horizon customers in regional WA get up to around $3,800 from the state scheme instead, which can bring the net cost closer to $5,500 on the same battery. First-year bill savings in Perth run about $900 to $1,400, with payback in roughly 5 to 8 years.
Your home is not the example. The check uses your postcode, your network, your bill and your roof, and returns your real after-rebate number.
Why waiting costs you
Two clocks are running in WA. The federal rebate steps down every 6 months, with the next cut on 1 January 2027. And the state allocation is capped and running down, so the WA top-up can close before the federal one even moves.
Perth install lead times run 4 to 8 weeks, longer in regional WA, so a signed contract by early November 2026 locks in today's federal rate. The check is the fastest way to see your number and whether the state scheme still has room.
Check your WA rebate before the allocation runs out
30 secs · Free · No obligationFrequently asked questions
Joe White
Joe has over five years of experience in the renewable energy sector. Based in Australia, he is dedicated to advancing sustainable energy solutions to benefit both the environment and local communities. In his spare time, Joe loves to surf and take his dog, Mitchy, on road trips to explore the road less traveled.
