2021-2023 Sustainability Plan and Financial Performance

Infrastructure & Networks EBITDA evolution Double digit growth supported by capex acceleration enel and efficiencies 2020 2023 Δ (€bn) +19% RAB/end user (€/cl) ~560 624 +11% 0.3 0.5 FY 2020 0.4 9.5 Opex/end user (€/cl)1 41 34.5 -16% 0.3 7.7 ~8.0 EBITDA/end user 104 (€/cl) 124 +19% Stewardship model EBITDA 0.1 €bn Cumulated 21-23 Future value of contracts 2020E RAB Efficiency Regulatory & Volumes Tariff 2023 +1.8x vs 20202 1. In real terms 2. Margin of contracts in place as of 2023 calculated for full life 49 64

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