Basslink (the HVDC connection between Victoria and Tasmania) is still operational and this year has swung to a net transfer of energy from VIC to TAS for the first time since 2008, due to drier weather causing less hydro power. Victoria is predominantly coal-powered.
https://aemo.com.au/-/media/files/major-publications/qed/202... (Section 1.5, figure 30)
So it's more correct to say that local generation is 100% renewable, not total energy consumption.