Under the National Electricity Rules, the AEMC is required to adjust the market price cap and cumulative price threshold for the National electricity market, in line with the consumer price index, by 28 February each year.

Using the method set out in the National Electricity Rules, the values for the market price cap and cumulative price threshold for the 2018-19 financial year are:

The updated values, which apply from 1 July 2018, and underlying calculations are available in a schedule of reliability settings on the AEMC website

Since 1 July 2012, the National Electricity Rules have required the AEMC to update the values for the market price cap and cumulative price threshold each year by applying consumer price index information published by the Australian Bureau of Statistics.