Investor Presentaiton

INFRASTRUCTURE FOR THE FUTURE TRANSGRID DEBT AND HEDGING • In August 2020, TransGrid established A$800m in new syndicated bank debt facilities comprising a $600 million 3-year capex facility and $200 million 7-year term debt facility ⚫ In September, TransGrid placed A$600 million of 10 year secured Australian Medium-Term Notes (AMTNs) maturing in September 2030 Interest Rate Swaps (1) Notional Principal Amount Average Contracted Fixed Interest Rate < 1 year $303m 2.8% • In November 2020, TransGrid Services entered into a $125 million corporate debt facility with the Clean Energy Finance Corporation 1-2 years $303m 2.9% . In December 2020, TransGrid established a $300m seven year bank debt facility with Export Development Canada (EDC) 2-5 years $2,893m 2.5% 5+ years $1,688m 1.9% . In February 2021, TransGrid Services successfully raised A$600m via new 5- year syndicated bank debt facilities Total $5,186m 2.3% • Next debt maturity is $287m in June 2021 Drawn Debt Maturity Profile at 31 December 2020 ($m 100%) ■Capital Markets Debt Bank Debt 900 635 635 600 490 491 287 269 300 336 336 256 176 200 3 169 25 Jun-21 Jun-22 Jun-23 Jun-24 Nov-24 Jun-25 Sep-26 Aug-27 Oct-27 Nov-27 Dec-27 Mar-29 Oct-29 75 Sep-30 Sep-31 Oct-32 Sep-33 Oct-34 Note: Information above relates to TransGrid Obligor Group and TransGrid Services Spark Infrastructure I Investor Presentation | February 2021 53

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