Investor Presentation - September 2021 slide image

Investor Presentation - September 2021

Missouri regulatory summary Average-rated regulatory jurisdiction by RRA¹ Traditional approach: general rate case typically filed every three years - Cost-of-service, rate base and capital structure determined using historical test year Both utilities have weather mitigated rate designs and mechanisms to address purchased gas costs, pensions and energy efficiency investments Next rate case must be filed by October 2021; can be sooner if we choose Infrastructure System Replacement Surcharge (ISRS) Enables recovery of (and on) infrastructure investment with minimal regulatory lag In effect since 2003 • Missouri Public Service Commission - five members appointed by Governor (also appoints the Chairman) - - - Glen Kolkmeyer (R) - Apr. 2025, replaces Bill Kenney Scott T. Rupp (R) - Exp. Apr. 2020 Maida J. Coleman (D) - Aug. 2021 - Jason R. Holsman (D) - Jan. 2025 - Ryan A. Silvey (R), Chair - Jan. 2024 1RRA is Regulatory Research Associates. 26 Spire | Investor presentation - September 2021
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