Solar panels in St Clair

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 2759 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. On a house of this vintage two things move the number: a switchboard that predates safety switches, and a tile roof that has been up there four decades. We look at both before quoting rather than after.

St Clair 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. The discount shrinks each January until the scheme ends in 2030, and the exact amount depends on the certificate market on your installation date.

That is exactly the right question, and it is the reason this page exists. A system is designed to sit on your roof for two and a half decades; if the roof needs replacing in five, you will pay to remove the panels and put them back. Concrete tiles themselves last a long time, but the things around them do not always — ridge capping and bedding, sarking, and the battens underneath. We walk the roof at the assessment and tell you what we see. If it needs work first, we would rather say so and lose the job this month than take it and be back in five years arguing about who pays for the removal.

Three separate things, and a quote that gives you one number is hiding two of them. The product warranty covers the panel itself failing — typically somewhere between 12 and 25 years depending on the brand. The performance warranty is a promise about output, usually that the panel still produces a stated percentage of its rating after 25 years; it does not mean the panel is replaced if it underperforms slightly. The workmanship warranty covers our installation — the mounting, the flashing, the wiring — and is the one that depends on the installer still being in business. Our quotes state all three separately, with the panel and inverter models named, so you can compare them against anyone else's.

They come down and, increasingly, they get recycled rather than landfilled — the glass, aluminium frame and some of the silicon are recoverable, and the industry's collection schemes have improved considerably. When we replace an old system we take the old panels and inverter away as part of the job. It is worth asking any installer what they do with them, because the honest answer varies.

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. A lot of homes in this estate are single-phase, so that 10kW is the whole allowance rather than 10kW three times over.

Yes. Erskine Park shares the 2759 postcode with St Clair, and we cover both — the pricing, the process and the connection paperwork are identical. Erskine Park has its own page, which also covers commercial systems for the warehouses in the industrial estates south of the houses.