AltaGas Value Proposition

0 B.C. Well Permits 300 200 100 2018 600 500 400 2019 1,000 900 800 700 1 B.C. well permits up >300% Y/Y in 2023, driven by progressing resource stewardship efforts supporting longer-term development. BC: Progressing Resource Stewardship Efforts Supports Development B.C. Well Permits (2018-2023 YTD) B.C. Montney NGL Supply, by Area (2020-2030) B.C. Montney NGL Supply, by Product (2020-2030) 500 500 Blueberry/Northern BC Ethane 450 ■Propane 450 A ■Dawson Creek Butane Natural Gasoline 400 400 Heritage Liquids Field Condensate 350 350 Other 300 300 >3x MBbl/d 250 MBbl/d 250 LPGS 200 200 ✓ 150 150 Townsend Growth Area 100 100 NGLS 50 50 2 2020 2021- 2022- 2023- 2024- B.C. activity levels expected to rise accordingly. Source: Wood Mackenzie. Notes:*See "Forward-looking Information" AltaGas B.C. Development Activity to Accelerate; Existing Infrastructure Key for Stewardship Commitments 3 0 2020 2021 2022 2023 2024 2025 2026 2027 Additional frac and liquids handling capacity required. Leveraging existing infrastructure key for limiting ground disruption commitments. 29 2028 2029 2030

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