Spire Missouri seeks $228M revenue increase in first future-test-year rate case

SPIRE INC

Filed Nov 2, 2026 with the Missouri Public Service Commission (Docket GR-2027-0075): $228M total revenue requirement, $57M via ISRS and $171M net new revenue.
Request uses an average FY2028 future test year rate base of $5.1B, a 55.0% common equity ratio and a 10.5% return on equity; MoPSC has 11 months, rates targeted by October 2027.
If approved as filed, average residential bills rise about $10/month (11%) in western Missouri and about $13/month (15%) in eastern Missouri.
Spire Missouri has invested nearly $808M in its natural gas system since its last rate case and serves more than 1.2 million Missouri customers.
In FY26 the utility supported 24 announced Missouri economic development projects (~$537M invested, 1,400+ jobs) and connected customers with ~$14M in energy assistance.

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