Australian Rooftop PV potential

Australia has not even scratched the surface of its enormous photovoltaic potential, find three top research institutions: the Institute for Sustainable Futures, the School of Photovoltaic and Renewable Energy Engineering (SPREE) at the University of New South Wales (UNSW), and the Australian Photovoltaic Institute.

In their 2019 report, they estimate that rooftops alone could provide 179 GW, generating as much as 245 TWh per year, enough to cover the current total grid consumption of 200 TWh. Half of this potential is in residential zones.

Total cumulative rooftop installations of PV in Australia is a mere 8GW, with a record year for installations in 2018, at 1.55GW new capacity. The AEMO’s Integrated System Plan, the National Electricity Market (NEM) – Australia’s main grid covering the eastern and southeastern states – will have 21-56 GW of rooftop PV capacity, generating 31-50TWh, by 2040, making rooftop solar the biggest generation capacity technology on the NEM.

New South Wales has a potential for 49GW, Victoria 45GW, and Queensland 37GW. In 2019, Queensland has 2.4GW and NSW 2GW.