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Spire Missouri seeks $228M revenue increase via rate case with rates expected by October 2027
SRSpire Inc
Spire Missouri Inc., a wholly owned subsidiary of Spire Inc., filed a general rate case with the Missouri Public Service Commission on November 2, 2026. The filing requests a total revenue requirement increase of $228 million to support infrastructure investments and modernization. Of this amount, $57 million is expected to be recovered through an Infrastructure System Replacement Surcharge, while $171 million represents net new revenues from capital structure adjustments. The proposed rates are based on a fiscal 2028 test year rate base of $5.1 billion, assuming a common equity ratio of 55.0% and a 10.5% return on equity. If approved, average residential bills could rise by approximately $10 to $13 per month depending on the region. The regulator has 11 months to review the filing, with new rates expected to take effect by October 2027. Spire Inc. is a leading publicly traded natural gas provider serving homes and businesses across multiple states.