H1 2018 Highlights

8 ESB Overview ESB Regulated Networks ESB Networks NIE Networks ESB Networks Generation Customer Solutions Financial Generation ES3 Customer Solutions Electric ESB Ireland Energy Generation & Trading Established 1927, Leading Irish Utility, 95% Government-owned. Markets Ireland & UK Owner of the Regulated Republic of Ireland transmission & distribution networks (2017 RAB €7.7bn) Owner of the Regulated Northern Ireland transmission & distribution networks (2017 RAB €1.7bn) Portfolio 5.8 GW. Irish¹ capacity 4.4 GW and 42% market share in H1 2018. GB capacity 1.4 GW ● Diversified fuel mix. Benefits from capacity and regulatory supports Customer facing businesses including supply of electricity, gas and smart energy services in Ireland and UK 33% Irish¹ electricity supply market share in 2017 and 1.4 million customers accounts Regulated Networks Businesses account for over two thirds of EBITDA, capex and assets Solid EBITDA €620m for H1 2018 (2017 €1.28bn), Assets €12.2bn, Gearing 53% Strong liquidity position and credit ratings A- and A3 Energy for generations 1 Irish = Republic of Ireland and Northern Ireland esb.ie/ir

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