Globally Connected Infrastructure

2 Invest in Core Platform Investments in WGL since 2018 Material Decline in Leaks¹ ■New Business WGL SEMCO ■System Betterment/Other C$4.0 billion invested ARP Programs 55% reduction in leaks over the past five years ARP investments in WGL are paying off with material reductions in leaks; which is driving improved safety and reliability with environmental and emissions benefits. 2018 2019 2020 2021 2022 2023E 2018 2019 2020 2021 2022 2023E Notes: 1) Internal data, represents Grade 1 and 2 leaks. *See "Forward-looking Information" AltaGas Investments are Driving the Intended Outcomes 38

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