LUMA Opportunity Highlights

CANADIAN CU UTILITIES LIMITED An ATCO Company ALBERTA UTILITIES - OPERATIONAL EXCELLENCE Electricity Distribution Electricity Transmission Natural Gas Distribution Costs per KM of Line Costs per KM of Line Costs per Customer $2,800 20% Lower $2,180 $151 $14,013 38% Lower 57% Lower Industry ATCO Average $8,656 Industry ATCO Average $65 Industry ATCO Average (1) 2019 data Operational excellence and lower costs benefit our customers and share owners INVESTOR PRESENTATION FEBRUARY 2021 23 CANADIAN ATCO CUTILITIES LIMITED An ATCO Company

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