Investor Presentaiton

RESULTS IN LINE WITH GUIDANCE: MASTERING THE GROWTH ACHIEVED DEMAND SUPPLIED WITH OWN GENERATION, SPOT PURCHASES AND BRIDGE CONTRACTS US$/MWh 140 120 100 80 660 40 40 Spot purchases 20 0 Renewables Spot 929 GWh 20 GWh overcosts Average monomic price US$116/MWh Average fuel & electricity purchase cost: US$63/MWh U12 & U13 coal plants: 6% of 1Q18 power supply. Authorization to close down requested on 4-Apr-18. Diesel CTM3 U16 U15 U14 U13 U12 CTH CTA Bridge contracts CTM1 CTM2 Firm capacity Coal 431 GWh Bridge 215 GWh Coal 180 GWh LNG 336 GWh Coal 445 GWh Diesel 2 GWh Total energy available for sale before transmission losses 1Q 18 = 2,558 GWh Average realized monomic price, spot purchase costs and average cost per MWh based on EECL's accounting records and physical sales per EECL data. Average fuel & electricity purchase cost per MWh sold includes the LNG regasification cost, green taxes, firm capacity, self consumption & transmission losses Net system over-costs and ancillary service costs averaged US$0.1 per each MWh withdrawn by EECL to supply demand under its PPAs. Engie Energía Chile Presentation to Investors - 1Q 2018 ENGIE 12

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