Solar power is a major contributor to electricity supply in Australia. As of September 2024, Australia's over 3.92 million solar PV installations had a combined capacity of 37.8 GW photovoltaic (PV) solar power. In 2019, 59 solar PV projects with a combined capacity of 2,881 MW were either under construction, constructed or due to start construction having reached financial closure. Solar accounted for 19.6% (or 46.7 TWh) of Australia's electrical energy production in the National Electricity Market and South West Interconnected System in 2024.
The sudden rise in solar PV installations in Australia since 2018 dramatically propelled the country from being considered a relative laggard to a strong leader by mid-2019. Australia has the highest per capita solar capacity, now at more than 1kW per capita.
The installed PV capacity in Australia increased 10-fold between 2009 and 2011, and quadrupled between 2011 and 2016. The first commercial-scale PV power plant, the 1 MW Uterne Solar Power Station, was opened in 2011. Greenough River Solar Farm opened in 2012 with a capacity of 10 MW. The price of photovoltaics has been decreasing and, in January 2013, was less than half the cost of using grid electricity in Australia. Using solar to supply all the energy needed would use less than 0.1% of land.