(1) I am advised definitive figures on this question are not available. In 2018, public company EnergyLab reported nationally that 29 per cent of owner-occupied dwellings had rooftop solar installations, compared to four per cent of rental dwellings.
(2) I am advised the most recent available study showing the proportion of systems installed on owner occupied dwellings compared to rental residential properties is IPART's 2015 Household survey of electricity, gas and water usage. This showed that 95.4 per cent of the respondents with solar PV installed were householders that owned their home.
(3) - (5)
The Government's Home Energy Action program provides a subsidy of up to 50 per cent of the cost of rooftop solar and other energy efficiency upgrades for eligible social housing tenants. The Government is investigating other initiatives to support access to solar for other residential rental properties.