Energizing the Future

Missouri overhead cost deferrals (Millions) Future recovery Actuals through 6/30/22 FY22 estimates Costs to be capitalized Depreciation $12.5 $21.0 Costs to be expensed Cost of service $12.9 $15.0 ISRS overheads Cost of service $5.0 $5.0 • Cost buckets identified and being tracked • Recovery will be addressed in current rate case Total regulatory deferral at June 30 is $34M Non-capitalized costs estimated to be ~ $20M at 9/30/22 - Includes $5.0M deferral included in the most recent ISRS increase Anticipate future costs, as well as recovery of accumulated deferred costs to be included in cost of service Spire | Investor presentation - August 2022

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