Investor Presentaiton

Debt Maturities Proforma long-term debt maturities¹ CAD $ Millions 2,000 1,800 1,600 1,400 1,200 1,000 800 600 400 200 2018 2019 2020 2021 2022 2023 ■ALA 2024 2025 ■SEMCO 2026 2027 2028 ■ PNG ■ WGL 2029 25 25 2030+ Balanced long-term debt maturities AltaGas "Moody's rating, not rated by S&P ** Negative outlook by S&P 1 WGL and SEMCO long-term debt converted at FX of 1.26 CAD/USD See "forward-looking information"

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