This presentation by Darryl Biggar, Special Economic Advisor at the Australian Competition and Consumer Commission (ACCC) and the Australian Energy Regulator (AER), was made during the discussion “Radical innovation in the electricity sector” held at the 63rd meeting of the OECD Working Party No. 2 on Competition and Regulation on 19 June 2017. More papers and presentations on the topic can be found out at oe.cd/1ZW.