H1 2018 Highlights

16 ESB Networks Business Description ~58% of Group EBITDA and 56% Group Assets Sole owner and operator of distribution network and sole owner of transmission network in Republic of Ireland Regulated Asset Base (RAB) 2017 €7.7bn Strategy: Smart Reliable Networks PR4 Revenue Determination (2016-2020) Significant Capital Investment WACC 4.95% pre tax real 1 • Focus: PR4 delivery ESB Networks 58% H1 2018 EBITDA - €620m ES3 RAB (€bn) €7.7bn €6.1bn End PR2 Dec 2010 PR4 Dec 2017 Energy for generations 1 WACC pre tax real calculated real pre tax cost of debt and real pre tax cost of equity 2 Estimated RAB value end 2017 per CRU published PR4 revenue determination methodology esb.ie/ir

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