Yes. Australia does likely have the highest proportion of households with PV systems on their roof of any country in the world.
But to be clear, Australia does not have the most PV rooftop capacityinstalled per person. By that we mean there are a number of other countries that currently generate a higher proportion of their total electricity from PV than Australia..also have larger commercial and industrial PV systems (often tens to hundreds of kilowatts in size) or utility PV plants (which can be a megawatt – 1,000 kilowatts – to tens of megawatts in size).
Australia is unusual in that some 85% of its installed PV capacity is small systems less than 10kW.