The cost of one days electricity on the Australian grid is three times (or 50 times) more than it wa, page-66

"Where is your pricing for replacing the entire fossil electricity generating fleet vs building out a renewable storage system ? You keep banging on about the cost of batteries and yet you have not produced a single number."

You need to compare the cost of new fossil generating with the cost of new renewable generation, storage is an added cost on top of renewables.