Investor Presentaiton

Minutes Asset management Ausgrid has adopted a 'whole of life' approach. Effective asset management ensures the appropriate balance between cost, risk and performance for the safe and efficient delivery of a reliable and sustainable electricity network Ausgrid achieves this balance with: An asset management framework, including asset policies, asset standards and plans 120 110 . A single investment governance framework, with a consistent risk prioritisation methodology Extensive monitoring and reporting of network performance Asset maintenance and replacement programs to support network safety, reliability and performance and ensure compliance with obligations Delivery of improvement initiatives to achieve operating efficiencies 100 90 80 70 60 50 40 30 20 FY07 FY08 FY09 FY10 FY11 Ausgrid Reliability Performance FY12 System Average Interruption Duration Index (Left Axis) (Average outage duration in mins per customer p.a.) 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 FY13 FY14 FY15 FY16 FY17 System Average Interruption Frequency Index (Right Axis) (Average interruptions per customer p.a.) FY18 FY19 Frequency Risk Performance Sustainable value Cost Effective asset management has allowed Ausgrid to significantly improve its reliability performance track record Ausgrid 15

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