TransAlta Development and Strategic Accomplishments

Development Pipeline CANADA LEGEND: 18 ADVANCED-STAGE DEVELOPMENT SITE EARLY-STAGE DEVELOPMENT SITE Total All Stages: 1,465 – 2,080 MW PROJECT MW FUEL LOCATION STAGE COD RANGE Riplinger 300 Wind AB Willow Creek 1 70 70 2024-2025 Wind AB 2024 Willow Creek 2 70 Wind AB 2024 Tempest 90 Wind AB 2024 Alberta Cogen 15-30 Gas AB 2023 Ontario Cogen 20 Gas ON 2023 WaterCharger 180 Battery AB 2023 SunHills Solar 85 Solar AB 2023 Alberta Solar 85 Solar AB 2024 Antelope Coulee 200 Wind SK TBD Red Rock 50 Wind AB TBD Brazeau Pumped Storage 300- 900 Hydro AB 2032 TransAlta

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