Investor Presentaiton

Customer profile Ausgrid has a large and diverse end customer base End customer type 10% O 90% Annual consumption NUOS revenue 22% Residential 46% Small business Medium business 20% ■Large business ■Residential ■Business ■Residential 34% 41% ■Small business 11% Medium business 15% ■Large business 10% Overview 1.75 million end customers in FY19, representing almost half of the electricity customer connections in NSW Top 10 end customers with individually calculated tariff No. Customer NUOS revenue (%) 1 Large business customers (i.e. customers > 750MWh p.a.) accounted for 22% of network revenue in FY19 1 Sydney Trains 0.9% 2 Yancoal 0.4% Diversified customer base revenue - the largest customer accounts for <1% of network 3 Sydney Airport 0.4% 4 Commsteel 0.3% Key retailers for Ausgrid are AGL (Baa2), EnergyAustralia (BBB+) and Origin Energy (Baa2/BBB) 5 Global Switch 0.2% 6 Port Waratah Coal Services 0.2% 7 Credit terms with retailers and the regulatory regime allows for recovery in the event of retailer insolvency Orica Botany Industrial Park 0.2% 8 Glencore Coal Assets Australia Pty Limited 0.2% 9 Australian Defence Garden Island 0.1% 10 Orica Eastern Nitrogen Kooragang 0.1% Total 2.9% 1. % of total NUOS revenue year ended 30 June 2019 14 Ausgrid

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