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Solar and batteries in Perth: prices, the WA battery rebate and Synergy rates

Guides · Homerise team · Reviewed by Joern Haake · Published 15 October 2026 · Rebate figures verified 26 September 2026 · How we write guides

The short answer

As of October 2026, 6.6 kW of solar on a Perth home typically costs about $4,500 to $7,000 installed after the federal rebate, and about $13,500 to $21,500 with a 15 kWh battery, based on current installer prices on Homerise and published market data for Perth, the lowest of the capitals. WA adds its own battery rebate on top of the federal one, if you join a virtual power plant. Each kW of panels in Perth makes about 1,650 kWh a year, the most of any capital.

How much do solar and batteries cost in Perth?

In Perth, 6.6 kW of solar typically costs about $4,500 to $7,000 after the federal rebates, installed, GST included (October 2026):

Typical prices in Perth, after the federal rebates
What you buy	Typical price
6.6 kW solar	about $4,500 to $7,000
10 kW solar	about $8,000 to $10,000
13 kW solar	about $10,000 to $13,000
6.6 kW solar + 15 kWh battery	about $13,500 to $21,500
10 kW solar + 20 kWh battery	about $20,000 to $28,000
Battery only, per kWh (with hybrid-ready solar)	about $700 to $850

Ranges, not quotes, from current installer prices on Homerise and published Australian market data, before the WA battery rebate. Two storeys, a tiled roof, three-phase power or a switchboard upgrade add from a few hundred dollars to about $1,200 each. Installers' current offers can come in lower. More: solar panel cost, solar battery cost.

What rebates can Perth homes get?

Perth is in STC zone 3, so the federal solar rebate is about $1,665 on a 6.6 kW system, and the federal battery rebate about $3,663 on a 15 kWh battery, if installed now; both fall from 1 January 2027. They're already taken off the prices above. Western Australia adds two programs open to homeowners: WA Residential Battery Scheme and WA no-interest battery loan. Every program, who qualifies and how to claim it: solar and battery rebates in Western Australia.

Which batteries are ready for Synergy's VPP?

It matters in Perth because of the state battery rebate: to get it as a Synergy customer, you join a virtual power plant, and your battery has to be shown as ready for Synergy's VPP on Synergy's Supported Solutions List. On 1 October 2026, Alpha ESS and Anker SOLIX were shown as ready; Sigenergy, Sungrow, GoodWe and Fox ESS were listed as provisional (not yet ready). The list changes, so check it, or ask your installer, before you choose a battery. Battery details: Alpha ESS · Anker SOLIX · which batteries work with which VPP.

How much power does solar make in Perth?

Each kW of panels in Perth makes about 1,650 kWh a year: about 190 kWh a month at the height of summer and about 90 in June (PVWatts, panels facing north at 20°). A 6.6 kW system makes about 11,000 kWh a year. Winter output is about half of summer's, which is why batteries are often sized for a winter evening.

How much does power cost in Perth?

On Synergy's Home Plan (A1) for 2026-27, power costs about 33c a kWh plus about $1.19 a day. For solar exports, Synergy's DEBS pays 10c a kWh from 3pm to 9pm and 2c at other times, so most midday exports earn very little. That makes a battery, or west-facing panels that export later in the day, more valuable in Perth than in most cities. Enter your own rates in the savings calculator.

The Solar Sharer Offer (free midday power) isn't available in WA.

Perth suburbs

Local figures for your area (batteries your neighbours have put in, what solar makes there, the homes in the postcode) are on our suburb pages. The postcodes with the most new batteries: Armadale · Cockburn Central · Wanneroo · Canning Vale · Guildford · Baldivis · Gosnells · Spearwood · Cannington · Joondalup.

The installers we introduce in Perth

Homerise introduces one vetted local installer at a time, never several at once. We check their licence, accreditation, insurance, reviews and complaints before they get an enquiry, and every 90 days after (what to check yourself). Enter your address to see whether one covers your postcode.

Questions people ask

How much does solar cost in Perth?

Typically about $4,500 to $7,000 for 6.6 kW and about $8,000 to $10,000 for 10 kW, installed after the federal rebate (October 2026, current installer prices on Homerise and published market data). Perth is the lowest-priced capital in the market data.

How much is a solar battery in Perth?

About $700 to $850 per kWh installed after the federal rebate; with 6.6 kW of new solar and a 15 kWh battery, about $13,500 to $21,500 in total, before the WA battery rebate.

Is there a battery rebate in WA?

Yes. Up to $1,300 for Synergy customers, or up to $3,800 for Horizon Power customers, when you join a virtual power plant. Confirmed by your installer, so it isn't included in your price. It's on top of the federal battery rebate (about $3,663 on 15 kWh if installed now).

Which batteries can get the WA battery rebate?

Synergy customers need a battery shown as ready for Synergy's VPP on its Supported Solutions List. On 1 October 2026 that included Alpha ESS and Anker SOLIX, with several other brands listed as provisional. Check the list before you buy.

What does Synergy pay for solar exports?

Under Synergy's DEBS, 10c a kWh from 3pm to 9pm and 2c at other times (2026-27).

Sources

General information, not financial advice. Rebate rules change: figures on this page come from our rules table, last verified 26 September 2026. How we're paid: installers pay Homerise for introducing you. No brand or installer pays to be mentioned in a guide.