Guides
Solar and batteries in WA, explained
WA does solar differently to the rest of the country: its own grid, its own buyback schemes, its own export rules. These guides cover what we get asked about most, using the current figures from Synergy, Energy Policy WA and the Clean Energy Regulator. Figures checked October 2026.
Solar and battery rebates in WA, explained
What the federal solar and battery discounts and the WA battery scheme are actually worth in 2026, how they're worked out, and why your install date matters.
Existing solarAdding a battery to solar you already have
Your options for adding a battery to an existing Perth solar system, what happens to REBS, and what the 1 May 2026 rules mean for upgrades.
Export rulesThe 1.5 kW export limit, and how to get paid for more
Why new WA solar and battery systems start at a 1.5 kW export limit, what has to happen to lift it, and why your inverter needs a steady internet connection.
Buyback schemesDEBS or REBS: what Synergy pays for your solar exports
The two Synergy buyback schemes side by side, current 2026 rates, who can be on which, and the one-off fees to switch.
Battery sizingHow big a battery do you actually need?
A straightforward way to size a home battery from your own Synergy usage, why usable capacity matters, and where the rebate makes extra capacity expensive.
Inverters5 kW or 10 kW inverter, single or three phase?
When a bigger inverter is worth paying for in WA, when it isn't, and what single and three-phase power mean for your solar and battery system.
BackupBlackout backup: essential circuits or the whole house?
What a home battery can and can't run in a power cut, the difference between essential-circuit and whole-home backup, and what each needs.
The processFrom first call to switch-on: how a solar install works in WA
Every step of a solar and battery installation in Perth, from your bill to Synergy and Western Power approval to install day, and how long each part takes.
EV chargingCharging an electric car from your solar
How much solar an EV uses, when to charge it, Synergy's EV plan rates for 2026, and what to plan for if you're adding a home charger.
Want the numbers for your house?
Send us your latest Synergy bill and we'll size a system from your actual usage, show every rebate as its own line, and tell you what we can and can't offer before you sign anything.