First Quarter 2022 Earnings Report

INTERNAL Enel Chile Largest Utility player in Chile in installed capacity and number of clients Thermal generation1 ii) Tarapaca TG in Atacama Taltal Huasco Quintero San Isidro i Bocamina 2 Renewables generation¹ Azabache Cerro Pabellón Domeyko Sol de Lila Lalackama Lalackama Canela Talinay Oriente Talinay Poniente PMGD Rapel Valle del Sol Finis Terrae Pampa Norte Valle de los Vientos Sierra Gorda Este Campos del Sol Taltal Chañares Diego de Almagro La Silla Los Molles Carrera Pinto Bio Bio Networks1 Distribution enel Empresa Eléctrica Enel Colina Coal CCGT Others 2.4 GW Thermal net installed Capacity Coal CCGT Maule Laja Renaico Los Buenos Aires Pullinque Pilmaiquén Hydro Wind Solar Geothermal 71% of installed capacity corresponds to 5.8 GW Renewable net installed Capacity renewable resources Oil & Others Hydro Wind Solar Geothermal ገ 3.6GW 0.6 GW 1.5GW 0.07 GW 0.3GW 1.5GW 0.6GW 1. Data as of March 31, 2022 End users >2 million Enel Distribución Chile Indefinite concession period Transmission 683 High Voltage Lines (km) 58 Owned substations (#) 28

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