[Jedd]

Yes, there's some rebates from federal government in those numbers.

For the record:

33 x 370W solar panels (Jinko) - 12 year warranty

Three-phase inverter (Sungrow), battery capable down the track

Installation (labour, mounting kits, wiring, etc)

Total is A$13,000 -- less the government incentives / subsidy ($36 / STC) of A$6,600 which are intercepted by the vendor in this case.

In Australia these subsidies are taking yet another hit at the end of this year, hence there's a bit of a spike in people paying for these systems, but scheduling installation in 2021.