AVANGRID : Reports First Quarter 2023 Earnings Results

Contacts: Analysts: Álvaro Ortega, [email protected],207-629-7412 Media: Zsoka McDonald, [email protected],203-997-6892 AVANGRID REPORTS FIRST QUARTER 2023 FINANCIAL RESULTS • U.S. GAAP Net Income and Non-U.S. GAAP Adjusted Net Income increased 33% and 27% in the 1Q 2023, respectively, compared to 2021 • Affirming 2023 Earnings Outlook of $2.20-$2.38 per share • Networks delivered continued strong performance; 100 basis-point ROE adjustment in Maine removed • Completed partnership restructuring in offshore wind portfolio with a gain of ~$181 million after-tax • Recognized by Ethisphere as One of the World’s Most Ethical Companies for the 4th consecutive year Orange, CT – April 26, 2023 – Today AVANGRID,Inc.