The cost of one days electricity on the Australian grid is three times (or 50 times) more than it wa, page-96

Have you factored in the fact that you need either diesel or gas generators as back up for wind power? They produce emissions anyway.

Nuclear would cost nowhere near as much, and we have our own uranium as well. Until costs are proven to come down, and subsidies abolished, no government is going to rely on renewables only. Even Germany has gone all out on Gas from Russia.