LUMA Opportunity Highlights

CANADIAN CU UTILITIES LIMITED An ATCO Company Electricity Transmission 2020- 2022 General Tariff Application (GTA) Natural Gas Transmission 2021- 2023 General Rate Application (GRA) Application Filed 2020 2021 Generic Cost of Capital (GCOC) AUC Suspends Proceeding AUC Finalizes 8.5% ROE & 37% Equity Thickness For 2021 Natural Gas Transmission- Pioneer Pipeline Acquisition REGULATORY UPDATE 2021 Decision Expected Decision Expected 2022 GCOC Proceeding Expected to Commence Application Filed Decision Expected INVESTOR PRESENTATION FEBRUARY 2021 2022 2023 24 ATCO CUTILITIES LIMITED CANADIAN An ATCO Company

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