Solar panels in Mount Annan

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 2567 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. The variation that turns up most on these hills is a system split across two or three roof faces: more rails, more cable and sometimes a second string or optimisers. It is often still the right design — it just needs to be in the quote rather than discovered on the day.

Mount Annan 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. Certificates are based on the system's capacity and your postcode, not on which way the roof faces — the rebate is the same whether your panels point north or west.

Yes, and on a lot of these blocks it is the better outcome. North gives the highest total for the year, so if you have a good north face we will use it. But an east–west split produces a flatter curve: generation starts earlier in the morning and holds later into the afternoon, instead of peaking hard at noon. If your household uses power before work and after school — which is most households — more of that generation gets used at home instead of exported at a low feed-in rate. The annual total is somewhat lower than an ideal north array; the value of it often is not.

Less than people think, within the normal range. Most homes here have a pitch somewhere between 15 and 25 degrees, and anywhere in that band the difference is small enough that it rarely changes a decision. Very flat roofs are the one case worth a conversation: they shed less dirt and hold more, so they need cleaning more often to keep output up, and tilt frames are an option though not usually a cost-effective one on a house. We model your actual pitch and direction in the quote rather than quoting a generic figure.

It can, at the edges of the day and mostly in winter, when the sun sits low. It is site by site: a block on the western slope loses a little late afternoon, one on the eastern side loses a little early morning, and plenty of blocks here are clear. We check the winter sun path rather than the summer one, because that is when a shading problem actually costs you, and we lay out the array and pick the electronics — optimisers or microinverters where it helps — around what we find.

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 split array does not change any of that — the limit applies to the system, not to each roof face.

Yes. We cover the whole 2567 postcode, including Currans Hill, Narellan Vale, Smeaton Grange, as well as Narellan and Harrington Park. The pricing, the process and the connection paperwork are the same right across it.