On Friday 25 January 2019 the AER published retail energy market performance data. We published five quarters of data from Q1 2017-18 to Q1 2018-19 and five years of data from 2013-14 to 2017-18. The data is published in an Excel format to enable stakeholders to easily download and use the statistics. An accompanying report is also provided.
The Excel spreadsheet contains a large amount of granular retail performance data, however if more data is required email firstname.lastname@example.org to advise what additional data is needed.