The WA home battery rebates, explained

Two rebates can take thousands off a home battery in WA right now, one federal and one state, and for most homes they stack on top of each other. The federal one steps down on 1 January 2027, so timing matters. Here is the plain version.

The federal rebate: Cheaper Home Batteries

The federal Cheaper Home Batteries program gives you a discount on an eligible battery through small scale technology certificates. The aim is around 30 percent off the up front cost, but the actual amount depends on your battery size and the installation date. It works through the same certificate system as solar panels, so you do not fill in forms or wait for a payment. Your installer applies it as a discount at the point of sale.

A few things worth knowing:

It covers the first 50 kilowatt hours of usable capacity. The rate is strongest on the first 14 kilowatt hours, then tapers to 60 percent of that for the next 14 and 15 percent for the next 22, so a home battery gets the best rate and a large commercial battery gets less.
The battery has to be paired with solar, either your existing system or a new one installed at the same time.
The value steps down every six months, with the next step on 1 January 2027. The date your battery is installed sets the rate, not the date you sign, so the discount is larger the sooner you install.

The WA rebate: Residential Battery Scheme

On top of the federal discount, the WA Residential Battery Scheme adds a state rebate that depends on who supplies your power:

Synergy customers (greater Perth and the South West grid): a rebate of 130 dollars per kilowatt hour, capped at 1,300 dollars.
Horizon Power customers (regional WA): a rebate of 380 dollars per kilowatt hour, capped at 3,800 dollars.

To qualify you generally need to pair the battery with solar, use a battery on the Clean Energy Council approved list, have it installed by an accredited installer, and join an approved virtual power plant. Batteries installed before 1 July 2025 are not eligible.

Stacked together

For a typical 10 kilowatt hour battery, the two rebates together can take thousands of dollars off the price, and Horizon Power customers get more because their state rebate cap is higher. The federal part falls on 1 January 2027, so the total will be lower for installs after that date.

The exact figure depends on your battery, your retailer and the timing, and both schemes change over time. So rather than quote you a generic number, we work out the real, current figure for your system and show it on your written quote.

Want to know what the rebates mean for your home? Get a free quote and we will size a battery and apply every rebate you are entitled to.