AER - Ausgrid transmission 2019-24 - Post-tax revenue model - 2021-22 Return on debt update - January 2021

In line with our final decision on Ausgrid's electricity distribution and transmission networks, we have updated Ausgrid's return on debt for 2021-22. As a result of this update, the return on debt for 2021-22 is 4.94 per cent for its distribution and transmission networks. This results in an X-factor for 2021-22 of 2.45 per cent and -15.14 per cent for its distribution and transmission networks respectively. Holding other things constant, a positive X-factor implies a real revenue decrease and a negative X-factor implies a real revenue increase. The revised PTRMs show the updated X-factors.