Investor Presentaiton

INFRASTRUCTURE FOR THE FUTURE AER BENCHMARKING AER Benchmarking Report 2020 - Multilateral Total Factor Productivity (MTFP)1 Rankings Distribution Network Service Providers Transmission Network Service Providers DNSP 2019 A 2018 TNSP 2019 A 2018 SA Power Networks South Australia I 1 TasNetworks 1 I 1 CitiPower Victoria Powercor Victoria 23 2 ElectraNet 2 I 2 ↑ 4 TransGrid 3 4 United Energy Victoria ↑ 5 Powerlink 4 ↑ 5 Ergon Energy Queensland LO 5 ↓ 3 AusNet 5 3 Energex Queensland 6 ↑ 7 Endeavour Energy NSW 7 ↑ 8 . Essential Energy NSW 8 ↓ 6 00 TasNetworks Tasmania 9 ↑ 10 Jemena Victoria 10 ↓ AusNet Victoria 11 9 11 • Evo Energy ACT Ausgrid NSW 23 12 13 123 CitiPower, Powercor and SA Power Networks have remained in top 4 DNSPs since reporting began in 2006 TransGrid achieved the highest productivity gains across TNSPs in 2018 and improved its rank from 4th to 3rd in 2019 Powerlink ElectraNet TransGrid Transmission network Interconnector AusNet Services TasNetworks Continuing to deliver high productivity performances to provide benefits to customers and improve returns (1) The multilateral total factor productivity is a productivity index numbers (PIN) technique that measures the relationship between total output and total input. It allows both total productivity levels and growth rates to be compared between entities (networks). In the 2020 annual benchmarking report, the AER also apply the method to time-series TFP analysis at the industry level and for individual TNSP to better capture large Energy Not Supplied (ENS) changes. Spark Infrastructure | Investor Presentation | February 2021 22

View entire presentation