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Solar power & backup power installation
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SunPeak Solar Parramatta

A 6.6 kW system from about A$5,500 after rebates, and a battery adds A$8,000 to A$20,000. Is this for a home in Sydney, and do you already have a feed-in tariff?

Brisbane Roof Power

A 10 kW system is around A$10,000 installed, and multi-level roofs add from A$550. What is your roof type, and is your home single-phase or three-phase?

Southern Grid Energy Adelaide

Off-grid backup for a typical home usually runs A$25,000 to A$45,000, so we size the system first. How many kWh a day does your household use?

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Solar and backup power installation in Australia: prices and how to order

In Australia, a 6.6 kW solar system costs about A$5,000–A$9,000 installed after rebates, a 10 kW system about A$10,000–A$12,000, and a battery added to solar about A$8,000–A$20,000. For current prices in your area, describe the system and the roof in a request on BlaBlaPrice.

Approximate prices in Australia, November 2026 (sellers' websites)
ItemPrice range
6.6 kW solar system, installed after rebatesA$5,000–A$9,000
10 kW solar system, installedA$10,000–A$12,000
Battery added to existing solarA$8,000–A$20,000
Off-grid system, typical home (18 kWh a day)A$25,000–A$45,000
Multi-level roof installationfrom A$550

Licences and accreditation

Installers need more than trade skills. A NSW guide says a written contract is required for residential building work over A$5,000, and before any money is asked for supply and installation. Installers must be accredited: the listings describe an electrical licence, an SAA-approved post-trade solar course, and a first accreditation fee of A$605 for three years. In some states the installer also needs an electrical contractor's or builder's licence, so check the licence before you sign.

Season and generation

Summer runs from December to February, when panels produce the most power, and winter from June to August produces the least. A system installed in November is ready for the summer peak, while a battery matters most for evening use and for the darker winter months.

How the price is quoted

Quotes are given per system size in kW for panels and in kWh for batteries, and many state whether they are before or after federal rebates. Extras such as multi-level installation are quoted separately, and a tiled roof upgrade starts from about A$110. Ask whether the quote covers the feed-in tariff, and whether your home is single-phase or three-phase.

What to put in your request

State the system type (solar only, solar with battery, or backup only), the power in kW, the battery capacity in kWh, the number of phases, the roof type and the site address. Add the feed-in tariff you expect, your deadline and your budget.

BlaBlaPrice is free for buyers. Describe the system you want in your own words in the chat, and add a photo of the roof or the meter box if it helps. The AI asks for missing details, looks through sellers' websites and price lists for solar and battery work in Australia, and shows the prices and installers it found. Registered sellers reply in the chat with their offer, price and terms, and your contact details stay hidden until you decide to share them. See electrical installation, construction and renovation, or how BlaBlaPrice works.

Questions and answers

How much does a home solar system cost in Australia?

A 6.6 kW system is about A$5,000–A$9,000 installed after rebates, and a 10 kW system about A$10,000–A$12,000.

Does a battery cost much more?

Adding a battery to existing panels typically costs about A$8,000–A$20,000, depending on the size and the home.

Do solar installers need a licence?

Installers must be accredited, with an electrical licence and an approved solar course. Some states also require an electrical contractor's or builder's licence.

Is a written contract required?

In NSW, residential building work over A$5,000 needs a written contract, and the installer may not ask for money for supply and installation before it is signed.

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