Investor Presentaiton

SA POWER NETWORKS - HY 2013 Business update SA Power Networks Electricity sales volumes HY 2013 Quantity (GW h) HY 2012 Variance Residential/Domestic Hot Water 1,647 1,715 (4.0%) 267 294 (9.2%) Small Business Large Business 2,865 2,809 2.0% 688 650 5.8% Unmetered 64 55 16.4% Total 5,531 5,523 0.1% Residential solar penetration - June 2013: 19.2%, December 2012: 17.6% Growth in unregulated revenues - Higher income on major projects, principally Electranet Photovoltaic (PV) feed-in tariff payments are being recovered ° -$77 million out of pocket at 30 June 2012 ° -$19 million out of pocket at 30 June 2013 Service Target Performance Incentive Scheme (STPIS) - Provisional 2012/13 regulatory year estimate of ~$13 million to be confirmed in pricing from 1 July 2014, not accrued in results Vegetation management costs $39.8 million resulting from approval of pass through application for additional costs for 2012/13 - 2014/15, to be recovered in 2014/15 National Broadband Network (NBN)- initial 3 year contract signed as a Tier 1 supplier of design and construction services in South Australia SPARK INFRASTRUCTURE INVESTOR PRESENTATION - NOVEMBER 2013 26 spark infrastructure

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