Investor Presentaiton

Midstream - Storage update Spire Storage West • 23 Bcf facility in Wyoming with five interconnects serving Western U.S. $195M expansion on track - Increasing capacity to 39 Bcf over 2023-2024 seasons Strong market interest in first phase Anticipate accretion beginning FY25 Spire Salt Plains • • . 10 Bcf facility in N. Oklahoma Acquired April 1 for $37M Included in NEE for FY24 and beyond Vancouver Seattle Portland San Francisco Los Angeles Kern River Pipeline Ruby Pipeline Northwest Pipeline Salt Lake City Las Vegas Mountain West Pipeline Phoenix Mountain West Overthrust Pipeline Spire Storage West Opal Hub 9 Spire | Investor presentation December 2023 - WYOMING

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