Not a surprise. My brother has lived in Adelaide in South Australia for many years. In spite of the prolific hydrocarbon
Cooper basin within it, the state has decided to go full-renewable and gouge anybody and everybody they can in the pursuit of, what do they say, 'an environmentally pure power grid'. Gee, they forgot to include in that statement 'and very expensive'.
Notice that Western Australia does not appear on the chart. They have a tremendous surplus of gas. All they need is to transport it to South Australia. It is a long way, but guess what? The states in Australia are far more autonomous than in the US, and they will not deal with each other.