Investor Presentaiton

INFRASTRUCTURE FOR THE FUTURE SA POWER NETWORKS Financial ($m) (1) Regulated revenue – DUOS Semi-regulated revenue Unregulated revenue Total Revenue Operating costs Enerven margin EBITDA Other 2020 2019 Change CPI-X $10.7m 849.2 848.8 0.0% STPIS (3) 81.4 97.3 -16.3% $34.0m 11.6 14.0 -17.1% Customer 942.2 960.1 -1.9% Growth (4) 1.1% (301.2) (292.2) 3.1% (4) Consumption -3.6% 27.1 22.8 18.9% 668.1 690.7 -3.3% FTE Change (4) 0.4% (137.2) (138.7) -1.1% Net Debt / 73.9% RAB (368.7) (405.6) -9.1% 106.6 116.2 -8.3% FFO / Net Debt 15.9% Net finance costs (2) Net capital expenditure Distributions received by Spark Infrastructure SA Power Networks EBITDA for FY2020 decreased by $22.6m or 3.3% (1) 100% basis (2) FY2020 includes a $2.1m (loss) credit valuation hedge adjustment (FY2019: includes a $1.4m loss) (3) 2017/18 STPIS result to be recovered from 1 July 2019 and 2018/19 STPIS result to be recovered from 1 July 2020 (4) Compared to FY 2019 Spark Infrastructure | Investor Presentation | February 2021 15

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