The 10 dumb myths of solar installers
The electricity network distributor won’t allow oversizing beyond their inverter size limit
Wrong again for most network distributors. Yes, Ausnet in Victoria has this stupid rule and they should hire some electrical engineers with competence to help them out. But Citipower/Powercor, Jemena and United Energy in Victoria all allow oversizing as do network operators in WA, SA, Queensland as well as some distributors in NSW.
So if distributor Jemena says you can have a 10kW capacity inverter installed on a single-phase then as long as it’s compliant with Australian Standard 4777 you can attach panels with capacity of 13kW, 15kW or even more. Also by not going beyond a 10kW inverter you slip in under their rule of automatic pre-approval