Investor Presentation December 2021

Advancing natural gas and sustainability Energy Choice laws now passed in AL, MS and MO - Ensures customers have right to choose their energy source Effectively prohibits local authorities from adopting natural gas ban Missouri RNG legislation (HB 734) signed into law - - - Allows Spire Missouri to . • Invest in RNG production, gathering and delivery infrastructure Purchase RNG and include in our gas supply portfolio Deliver RNG to its customers RNG infrastructure to be included in rate base Qualified investments may be recovered through a rider Legislation contemplates both biogas and hydrogen - Next step: rulemaking at the MOPSC 24 Spire Investor presentation December 2021 -

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