[wisdomdata]

My meaning was that it is too far for a transmission line to make sense, and once the transmission line gets to South Australia (the state closest to Western Australia) you have only delivered the power to a state with the same problem - too much solar without enough storage. A better way to solve the problem would be to prohibit new installs of rooftop solar without an accompanying battery system.

This won't happen because it would be politically difficult, and because the power companies would lose a lot of money as consumption fell through the floor. They don't want too much battery for a while because this would require them to move from a usage model to a majority fixed fee billing. To reduce public outrage the changeover needs to be slow.