LUMA Opportunity Highlights

100% STRUCTURES & LOGISTICS BUSINESS UNIT ATCO Structures ATCO Frontec ORGANIZATIONAL STRUCTURE ATCO (TSX: ACO.X/ACO.Y) $5 billion common equity capitalization INVESTOR PRESENTATION FEBRUARY 2021 40% 100% NELTUME PORTS ATCO CORPORATE ATCO Land and Development ASHCOR 52.2% CU CANADIAN UTILITIES LIMITED An ATCO Company (TSX: CU / CU.X) ~$9 billion common equity capitalization 5 CANADIAN ATCO CUTILITIES LIMITED An ATCO Company

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