I found the usage section and there is a facility to download. At best it gives me hourly, which is not the basis for calculating the Demand Tariff, and that is for a single day. If I select the whole bill, all I get in the download is the total usage for that bill.
Short of individually downloading 90 days of data, combining it all and then analysing to find the peak hour - oh wait, that's right, I need either 30 minute or 15 minute data.
It is next level and it does prevent users from making valid comparisons.
BTW, this is Energy Australia. - I just transferred to Red Energy anyway. Fixed tariff with a hight solar FiT, and much cheaper than Energy Australia for my last bill.