Solar panels in Oran Park

As an estimate, a 6.6kW system comes to about $3,990, a 10kW to about $5,490 and a 13.2kW to about $7,990, with the STC discount for postcode 2570 already taken off. Those are typical figures for a straightforward install, not a fixed price. Houses here are new, so the usual complications — old switchboards, brittle tiles, two-storey access over a narrow side setback — mostly do not apply. Expansions are the exception, because what happens to the existing inverter decides the price.

Oran Park 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. If you are adding to an existing system, the certificates are created on the new capacity you install, not on the total on your roof.

Usually yes, and it is one of the most common jobs in this part of Camden. New homes across these estates were handed over with a modest system — often enough to satisfy the energy commitments made when the house was approved, rather than enough to cover how the household actually ended up living. There are three ways to grow it: add panels to the existing inverter if it has spare capacity and a free roof face, add a second inverter and array alongside it, or replace the inverter with a larger one and reuse the panels. Which is cheapest depends entirely on the inverter you already have, so we look at it before recommending anything.

Because it was usually sized to pass a requirement, not to zero a bill. A new dwelling in NSW has to meet energy commitments to get approval, and a small rooftop system is one of the cheaper ways for a builder to meet them. That is a perfectly legitimate thing to do — it is just a different goal from yours. It also means the equipment was chosen on price, so the inverter is often the part that limits what you can add later.

Adding a separate array and inverter does not touch the original system, so its warranties stand. Adding panels onto an existing inverter is where it pays to check: mixing panel models on one string is poor practice and can breach an inverter's conditions, and some manufacturers require an accredited installer to sign off on any change. We check the specific products on your roof rather than answering in general, and if the safe option is a separate system we will say so even though it is the less convenient answer.

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. Adding capacity to an existing system counts as an upgrade, which means a fresh application and the current rules rather than the ones that applied when the house was built.

Yes. We cover the whole 2570 postcode, including Kirkham, Ellis Lane, Brownlow Hill, as well as Camden and Spring Farm. The pricing, the process and the connection paperwork are the same right across it.