Solar and battery packages in Perth
What a solar and battery package is
A solar and battery package prices the whole job as one: panels, inverter, battery and installation. That lets the panels and the battery be sized as a pair, because a battery can only store what the panels make beyond your daytime use. The stored power is worth more used at home than sold: Synergy's buyback scheme (DEBS) pays as little as 2c/kWh for solar sent to the grid in the middle of the day, while its standard A1 home plan charges 33.26c/kWh.
Answer a few questions about your home in the battery matcher to see which batteries fit it and get quotes from Perth installers.
On this page6 sections
What does a solar and battery package cost in Perth?
Indicative, not a quoteEach price covers the system fitted at your home, from budget to premium equipment, and the last column takes off the rebates for a system installed today.
| Package | Before rebates | Rebates | You pay |
|---|---|---|---|
| 6.6kW solar + 10 kWh battery | $15,800–$24,300 | $5,800 | $10,000–$18,500 |
| 10kW solar + 15 kWh battery | $22,300–$35,800 | $8,000 | $14,300–$27,800 |
What the rebates are
How do I read a package quote?
Read it part by part, because a single total hides what each part costs and whether every rebate is there.
Ask for the parts as separate lines
Ask for the panels, inverter, battery and installation as line items. Any company discount should sit on its own line, apart from the government rebates, so a real discount cannot be confused with a rebate you would get anyway.
Check the rebates come off in full
Every rebate the package qualifies for comes off the price before you pay. Listed one per line, they should add up to about the rebates figure in the table above for the same package size.
Compare the battery inside and outside the package
Our product index shows the eligibility status per model, and the price index shows what the parts typically cost: a cross-check that has saved readers four figures.
What changes if you add a battery to existing solar?
A battery can be added to existing solar, but the inverter on the wall may need replacing, and new paperwork and older wiring can add cost.
| What changes | Solar and battery together | Battery added later |
|---|---|---|
| Inverter | A hybrid inverter, one box that runs the panels and the battery, is chosen to suit the battery from the start | For the federal discount a hybrid already on the wall must be on the CEC list and able to connect to a VPP, or be replaced. A solar-only inverter needs a battery inverter beside it or a new hybrid |
| Connection approval | One Western Power application covers the panels and the battery | Adding the battery is a new Western Power application |
| Older solar | Every part is new and built to current rules | Claiming the WA rebate brings the existing solar under current rules, so older wiring or parts may need upgrading |
| Buyback scheme | A new system can apply only for DEBS, not the older REBS scheme, and Synergy approves DEBS for each home | A home still on REBS has to move to DEBS when the battery is added |
| Paying | The whole system is paid for at once | The cost is split across two purchases, each with its own installation |
How do the rebates and Synergy tariffs affect a package?
The rebates take money off the package price, and Synergy's prices set what the battery saves.
The WA rebate pays $130/kWh of usable capacity (the energy you can draw from the battery) up to 10 kWh, so a larger battery in a package still gets $1,300.
The federal battery discount gives a set number of certificates for each kWh of usable capacity, in full on the first 14 kWh. Each kWh above that earns 60% of the full number up to 28 kWh, then 15% up to 50 kWh. The number per kWh is fixed by the install date, not the date the quote is signed, and it next falls in Jan-Jun 2027.
Solar the battery supplies in the evening is worth more than an export at any hour, because even the DEBS peak credit of 10c/kWh in the late afternoon and evening is below the A1 price.
What should I ask the installer?
Questions to work through
3 questionsSee which battery fits your home and your solar
Frequently asked questions
Who can add a battery to existing solar in Perth?
To claim the federal discount, an installer accredited by Solar Accreditation Australia has to be on site for set-up, a mid-installation check and testing. To claim the WA rebate, the company you buy from must be a vendor the scheme has approved, and the scheme's administrator Plenti publishes that list.
Will a package keep the power on in a blackout?
Only if the battery and inverter are set up for backup. Without a backup mode a grid-connected system shuts down in an outage for safety, battery included, so check that the quote includes it.
Want to take the next step?
Get a quote from an installer from our network that covers your area. You choose whether to act on it. No obligation.
Sources
- Synergy, Distributed Energy Buyback Scheme
- Synergy, DEBS, REBS and DES solar application
- Synergy, Home Plan (A1)
- Energy Policy WA, WA Residential Battery Scheme eligibility requirements
- Energy Policy WA, WA Residential Battery Scheme information for applicants
- Energy Policy WA, WA Residential Battery Scheme questions and answers
- Clean Energy Regulator, Solar batteries
- Clean Energy Regulator, Battery rebates are changing 1 May 2026
- Western Power, Connect my solar, battery or EV: inverter system up to 30kVA
- Western Power, How solar connects to the grid
- Department of Climate Change, Energy, the Environment and Water, Installation day and after
- Consumer Protection WA, WA Residential Battery Scheme