First Quarter 2022 Earnings Report

INTERNAL 2022 Adjusted Financial highlights (USD mn)1 EBITDA² Tariff in transmission business, PPAs indexation and volumes lead to a better performance Net Income³ Higher EBITDA and better financial result drove the period CAPEX Renewable' deployment in line with the strategy enel FFO 2021 FFO includes 159 USDmn of PEC factoring and Quintero Tx lines Q1 2022 226 89 167 (+15% yoy) (+41% yoy) (-31% yoy) 123 Average exchange rate for the period of 808.19 CLP/USD. Spot exchange rate for the period of 786.93 CLP/USD. Adjusted by the Coal Stock Impairment (CSI): 21 USD mn in Q1 2022 and 13 USD mn in Q1 2021. Adjusted by the CSI: 14 USD mn in Q1 2022 and 9 USD mn in Q1 2021. (151) (-171%yoy) 6

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