First Quarter 2022 Earnings Report

1. As of April 25, 2022 INTERNAL Hydrology outlook Pacific temperatures confirm La Niña effect Rainfall in our most relevant basins¹ Cumulated rainfall (mm) 0 abr 500 may 1000 jun- jul - Last 60 years $1500 обе 100 8 ນ ພ ຍານ ຂອງຊີ້ງ ແມ່ນວ 0 abr may unf jul 2500 2000 Laja (20% of consolidated Gx) des 130 nov קןכ обе sep oct- Rapel (9% of consolidated Gx) ene nov Last 10 years feb mar abr 2021-22 dic Cumulated rainfall (mm) 0 abr 3000 2500 2000 1500 1000 500 may- unl 2022-23 Inf E ago sep ene Cumulated rainfall (mm) 0 may 500 1000 Jun jul 4000 3500 Βίο-Βίο (25% of consolidated Gx) oct nov dic- ene 198/99 (Driest year) 23 23 ago 1500 2000 sep oct Maule 2500 (34% of consolidated Gx) nov dic ene feb feb mar mar abr abr enel

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