These files provide price and demand data by region, cumulated by month. They are in simple CSV format and the data in them can be easily graphed using standard desktop applications. The data dates back to the start of the NEM, 13 December 1998.
Aggregated Price and Demand Data - Current Month
Aggregated Price and Demand Data - Historical
Warning: The data in these files is updated and extended by automatic processes at the end of each day. Price data is subject to review and occasional adjustment by the end of the next business day, in accordance with National Electricity Rule 3.8.1(c) and the Over Constrained Dispatch procedure. Prices become final on the second business day of the following month.