H1 2018 Highlights

Generation & Trading (G&T) Business Description ~26% of Group EBITDA and 20% Group Assets 5.8 GW: 4.4 GW All-Island and 1.4 GW in GB All-Island ISEM¹ market share 42% by volume ISEM¹ revenue includes capacity & regulatory supports • Thermal plants now competing for capacity revenue More challenging but ESB portfolio mix advantageous and well positioned with focus on: 18 - Availing of additional revenue opportunities ― Cost efficiency - Investing in balanced low carbon portfolio of thermal & renewable generation Strategy: Transition to low carbon energy Focus: Integrated Single Electricity Market & Renewable Investment H1 2018 EBITDA - €620m ESB Energy for generations ISEM Market Share Generation Output by Fuel Type ESB 42% Other 58% Coal 22% 1 ISEM = Republic of Ireland and Northern Ireland 0 Peat Hydro Wind 6% 8% 4% Gas 60% esb.ie/ir

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