Investor Presentaiton

Impact of COVID-19 on Ausgrid's network Following sharp energy consumption movements at the end of March, the effects of COVID-19 are currently pointing towards a recovery. The residential spike started to ease off when schools returned and more people returned to workplaces. Small, medium and large businesses have shown signs of recovery since the start of June Actual consumption variation compared to baseline by key segments¹ (%) 25 20 15 10 5 0 -5 -10 -15 -20 -25 Time Base 29 period line Mar Apr 5 12 19 26 3 10 Apr Apr Apr May May 17 May May 24 31 7 14 21 28 5 12 18 May Jun Jun Jun Jun Jul Jul Jul Residential Ausgrid overall Large businesses Medium businesses Small businesses High voltage Better Ausgrid Together 1. Analysis from the week ending 29 March to the week ending 26 April compared actual consumption against a fixed baseline of days in March before restrictions were in place. From the week ending 3 May the baseline was updated to be a 14 day rolling average of the same period in FY19, i.e. the average demand of 14 days in April 2020 are compared to the average demand of the same 14 days in April 2019. This methodology allows us to moderate for time of year effects over a longer period of analysis 22

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