Investor Presentaiton

AltaGas Leading North American diversified energy infrastructure company AltaGas -$17 Billion Total Enterprise Value¹ Strong Accretion to both EPS and FFO/share2 metrics Visible dividend growth (2019-2021) $6 Billion ~$4.5 Secured growth ~$1.5 Advanced growth opportunities Diversification (3 segments, 8 utility jurisdictions, in over 30 states and provinces) Strong investment grade balance sheet ~$23 Billion Stable high quality assets AltaGas 1 Based on estimated book value at December 31, 2018 2 Funds from Operations is a Non-GAAP financial measure Expectations as at August 1, 2018 See "forward-looking information 3

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