Collectively, these systems produce enough energy to power approximately 1.04 million Australian home every year – the equivalent of the four towns of Perth, Hobart, Darwin and Canberra.
This latest announcement comes just eight months after the country passed another milestone; achieving its first one million rooftop solar systems.
Of the two million systems, around 1.83 million are small-scale solar systems.
The announcement came from the Clean Energy Regulator, which manages the country’s renewable energy target.
The CER said the data underlines the fact that investment in small-scale renewable energy continues to flourish in Australia. Nearly all subsidies have been removed for small-scale installations, although rooftop solar and other systems still benefit from renewable energy certificates.
“Assisted by falling system costs coupled with financial incentives derived from the Renewable Energy Target, small-scale systems have become more and more affordable for everyday Australians,” the CER said in a statement on Thursday.
It is estimated that solar PV costs have fallen by more than 70 per cent in recent years, and Australia was the first of many countries that reached retail or “socket parity” – where the cost of electricity generated by rooftop solar is cheaper than that sourced from the grid.
The CER says the two million small-scale installations have a capacity to generate or displace approximately 6,882 GWh of electricity annually, with 4,182 GWh generated from small-scale solar, wind and hydro installations and a further 2,700 GWh displaced by solar hot water systems and air source heat pumps.