New data from global energy consultancy Rystad Energy shows that all Australian large-scale solar power plants generated 5,100 GWh of clean energy last month, down 2% on the 5,200 GWh produced in October 2025 with Western Australia home to two of the top three best-performing utility PV assets for the month.
The 100 MW Merredin Solar Farm, owned Indonesian PV developer Sun Energy, was ranked Australia’s top-performing big PV facility for the month with Rystad Senior Analyst David Dixon noting the power plant had delivered an average AC capacity factor (CF) of 35% for the month.
Spanish energy giant Naturgy’s 128 MW Cunderdin Solar Farm ranked second for the month with the Western Australian facility delivering an average capacity factor of 32%.
Pacific Partnerships’ 102 MW Glenrowan Solar Farm in Victoria was ranked third with a capacity factor of 32% while stages one and two of Acen Australia’s 400 MW Stubbo solar project in New South Wales (NSW) were ranked fourth and fifth respectively.
Dixon said all Australian utility-scale PV and wind assets generated 5.1 TWh of clean energy last month, a 2% decrease on the 5.2 TWh generated in October 2025.
At a state level, Victoria was the biggest single contributor to the month’s total, generating 290 GWh from utility-scale solar and 1,130 GWh from wind – a total of 1,420 GWh.
The top wind assets for the month were the Flat Rocks (48% CF) and Warradarge (47% CF) wind farms in Western Australia, with the Clarke Creek stage 1b (44% CF) wind farm in Queensland third.
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