Investor Presentaiton

Customer profile Ausgrid has a large and diverse end customer base with low concentration risk End customer type Business 10% Residential Overview Annual consumption Large Business Medium Business 10% Small Business 14% 90% Residential 35% NUOS revenue Large Business 23% 41% Medium Business 12% Small Business 19% Residential Top 10 end customers with individually calculated tariff 46% 1.8 million end customers in FY20, representing almost half of the electricity customer connections in NSW NUOS No. Customer revenue (%) 1 Large business customers (i.e. customers > 750MWh p.a.) accounted for 23% of network revenue in FY20 1 Sydney Trains (NSW Government) 0.8% 2 Yancoal Australia 0.4% Diversified customer base the largest customer accounts for <1% of network 3 Sydney Airport 0.3% revenue 4 Molycop 0.3% Key retailers for Ausgrid are AGL (Baa2), EnergyAustralia (BBB+) and Origin Energy (Baa2/BBB) 5 Global Switch Data Centres 0.2% 6 Orica Botany Industrial Park 0.2% 7 Port Waratah Coal Services 0.2% Credit terms with retailers and the regulatory regime allows for recovery in the event of retailer insolvency 8 Glencore Coal Assets Australia 0.2% 9 Australian Navy - Garden Island 0.1% 10 Orora Limited 0.1% Total 2.8% Ausgrid Together Better Notes: 1. Percentage of total NUOS revenue for the year ended 30 June 2020 10

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