Solar panels in Liverpool

As an estimate, a 6.6kW system starts from $7,410, a 10kW system starts from $10,300 and a 13.2kW system starts from $11,250 (with battery prices starting from $4,290), with the STC discount for postcode 2170 already taken off (incl. GST for metro areas; regional areas subject to freight and travel costs). Those are starting estimates for a straightforward install, not a fixed price. If you are replacing or expanding an existing system, the removal and disposal of the old gear and any re-wiring belong in the quote as their own lines rather than disappearing into the total.

Liverpool is in STC Zone 3, rating 1.382. In 2026 a 6.6kW system creates 45 certificates, worth roughly $1,710 off the price, and a 10kW system 69 certificates, roughly $2,622. It is a discount applied at the point of sale, not a grant you apply for afterwards. Replacing panels on an existing system can create certificates again, but only where the work meets the scheme's rules — we will tell you whether yours does before it is in a price.

Not all of it, and the difference matters. You bought three warranties, usually without being told they were three. The panel and inverter product warranties, and the panel performance warranty, are between you and the manufacturer or its Australian importer — they do not depend on the installer still trading, and you can claim them yourself. What you have genuinely lost is the workmanship warranty, which covered the labour, the roof penetrations and the wiring. That was a promise from that particular business, and nothing automatically moves it to anyone else. No company is obliged to pick it up, and one offering to should be asked what they mean by it.

Yes. A currently accredited installer can fault-find, test, repair and recommission any compliant system, including carrying out manufacturer-authorised warranty work. A system does not become untouchable because the company that put it up has gone. We do this work in Liverpool regularly, including on systems we had nothing to do with — and we would rather test one and tell you it is fine than sell you a replacement you did not need.

Start with paper before anyone climbs. The original tax invoice, the panel and inverter make, model and count, and the compliance certificate from installation are what a manufacturer claim is built on, and if the business is deregistered you are the only person who still holds them. If the paperwork is gone, the inverter has a label and so do the panels, and a site visit recovers most of it. The other thing worth doing is checking what the inverter is actually reporting — a system quietly making less than it used to is a different problem from one that has stopped.

It does, and it is not a sign of anything wrong. Accreditation for solar installers and designers moved from the Clean Energy Council to Solar Accreditation Australia during 2024, so a certificate issued before then names the Clean Energy Council and a current installer is accredited with Solar Accreditation Australia. Your old paperwork is still the record of who did the work and that it was done under an accreditation scheme at the time. If you are checking someone today, the name on the register to look for is Solar Accreditation Australia.

It depends on which half has failed, and the honest answer is often repair. Panels degrade slowly by design, so a ten-year-old array is usually still a working array; inverters stop outright, and an inverter is the cheaper half of the system. The case for replacing the lot is strongest when the array is small enough that it was never going to cover much — the 1.5kW and 3kW systems sold in the Solar Bonus era are the clearest example — or when the roof is coming up for work anyway. We will give you the repair number and the replacement number and let you decide.

The distribution network that owns the poles and wires in your street approves it — not your retailer — and we lodge the application for you. That network also decides how much your system may export: on a flexible export connection, eligible customers can send up to 10kW per phase back to the grid most of the time, while a fixed export limit caps exports at 1.5kW. Replacing an inverter or adding panels is an alteration to that connection and is assessed under today's rules, not the ones your system was approved under.