Solar Battery Perth · The whole-system guide
Solar batteries in Perth
One system, one decision: what it costs, what size you need, and who to trust with the install.
Which question should I answer first?
Start with the question you are stuck on. The four questions are savings, size, cost and installers. Pick the card that matches your next decision.
Find the batteries that suit your home. Solar Battery Perth's battery matcher asks about your goal, postcode and daily usage, then shows which batteries fit your home.
Is it worth it?
What a battery really saves on a Perth bill, after the DEBS feed-in rate and your evening use. And when it doesn't pay.
Payback briefRead itSizeWhat size do I need?
Match storage (kWh) to your night-time use and your roof. Not the biggest battery, the right one.
Find my batterySize my systemCostWhat does it cost?
Typical installed prices by system size, before and after the WA Battery Scheme rebate.
Cost + sizing guideSee pricesInstallersWho installs it?
Get comparable quotes from WA installers on our network. You choose who to talk to.
Find my batteryExplore your optionsWhat do you actually buy with a solar battery?
A solar battery is four parts working as one: solar panels, an inverter (the box that converts solar power for your home), the battery and the SWIS grid (the South West Interconnected System), plus Perth's own sun, tariffs and rebate. Pair them wrong and the battery underperforms.
- GenerationSolar panels
Size the array to charge the battery and cover daytime use.
- ConversionInverter
A hybrid or battery-ready inverter runs the battery. WA connection rules shape the choice.
- StorageBattery
Usable kWh matched to your evening use, not the headline figure.
- NetworkSynergy · SWIS
The DEBS feed-in rate and the WA Battery Scheme rebate set the economics.
What size battery fits my home?
Battery size depends on your night-time use and your roof. The guide groups homes into four bands by usable kWh: 10–15 kWh for a couple or a smaller home, 20–30 kWh for a family with an evening peak, 30–40 kWh for high use or an EV, and 40+ kWh for whole-home backup. Solar Battery Perth's cost and sizing guide has the detail.
Usable storage: the kWh you can actually use.
| Home | Usable storage | Usually suits |
|---|---|---|
| Smaller | 10–15 kWh | A couple or a smaller home |
| Medium | 20–30 kWh | A family with an evening peak |
| Big | 30–40 kWh | High use or an EV |
| Very big | 40+ kWh | Whole-home backup |
How the WA Battery Scheme works
- Who gets it
- Perth homes on Synergy (SWIS)
- What it pays
- A subsidy per kWh of eligible storage, up to a cap
- Good to know
- The rebate cap limits the subsidy. It isn't a size recommendation.
- Rate, cap + eligible batteries
- Cost + sizing guide, from the WA policy figures
Where the numbers live
Ready for real numbers?
Tell us about your home and usage. We pass your enquiry to WA installers on our network for quotes you can compare. No brochures, no pressure, no obligation, and you decide who to speak to.
- Step 1You answer a few questions about your home, bill and roof.
- Step 2We shortlist installers who cover your area.
- Step 3You choose. Compare quotes. Installers pay us a flat referral fee, never a percentage. It costs you nothing.
Why should I trust this guide?
Solar Battery Perth is independent. We're not owned by an energy retailer or a manufacturer.
- IndependentNot a retailer. We don't sell panels.
- WA-specificSynergy, SWIS and the WA rebate. No east-coast figures.
- Matched, not soldAn installer that covers your area. You choose.
- Figures sourcedWA numbers checked against the source, never from memory.
All our guides
Each page below covers one question in full detail.
- Compare batteriesHead-to-head on the batteries sold in WA
- Cost + sizing guidePrices by size, the rebate, and what fits you
- Find my batteryThe sizing worksheet and installer match
- WA rebate + rulesThe Battery Scheme, DEBS and WA connection rules
- Battery brandsEvery brand's spec and model pages
- 6.6kW solar and batteryPerth's standard system: price after rebates and savings
- 10kW solar and batteryThe bigger-home system: price after rebates and savings
- Solar and battery sizingPanels for the day, the battery for the evening
- Hot water on your solarA heat pump timed to midday solar
- EV charging on your solarCharging from surplus sun and Synergy's EV plan
- Solar by suburbLocal install context across Perth
Start with the four questions, or go straight to quotes
We line up the numbers and a shortlist of WA installers on our network. You choose who to talk to. Installers pay a flat referral fee, never a percentage of your quote.