First Quarter 2022 Earnings Report

QINDUSTRY. INNOVATION AND INFRASTRUCTURE 11 SUSTAINABLE CITIES AND COMMUNITIES CLIMATE ACTION INTERNAL A digitized and resilient grid is key to build a Net Zero future through electrification and circular cities... Energy distributed (TWh) 1 +5% End users (million) Main digitization KPIs Q1 2021 Q1 2022 Clients digital +6 pp 80 86 Interactions (%) 4.1 +2 pp 3.9 Digital payments (%) 776 78 -13% SAIDI² - DX 155 134 (min.) High voltage 100 100 (%) +4pp Medium voltage (%) 88 83 87 Q1 2021 Q1 2022 Low voltage 17 17 +2% (%) 2.0 2.0 1. Data only for Enel Distribution concession area; Includes transmission tolls 2. SAIDI Average LTM (Last Twelve Months) only includes the distribution business. Transmission business SAIDI in Q1 2022: 6 min and Q1 2021: 9 min enel Continuous innovation toward a more resilient grid will be vital in supporting the electrification process and delivering quality service to our customers anywhere, anytime We ensure a safe, quality service by leveraging digitization, automation, and artificial intelligence. 6

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