Spire Seeks $208M Gas Rate Hike in Missouri
Missouri businesses buying natural gas from Spire should model a possible base rate increase before the Commission rules.
Updated on Nov. 5, 2026 in Utilities
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Spire Missouri Inc. has filed tariff sheets with the Missouri Public Service Commission seeking a net increase of about $208 million in annual natural gas base rate revenues. Parties that want to take part in the review must file to intervene by November 23, 2026, which matters for businesses that buy natural gas service across the state.
Why it matters
Natural gas base rates feed directly into operating costs for any Missouri business with gas heating, process energy, or food and manufacturing loads, so a rate case of this size changes a planning line item. The filing is the opening step of a formal review that usually runs close to a year, so the final cost will not be settled for some time.
Spire Missouri's filing seeks roughly $208 million more in annual natural gas base rate revenue, which the company says equals about $13 a month for the average Spire East residential customer and about $10 a month for the average Spire West residential customer. Those figures are the company's own estimates for typical households and do not describe commercial or industrial bills.
The players
Spire Missouri Inc.
Spire Missouri is a natural gas distribution utility serving customers across Missouri, including the Spire East and Spire West service areas.
Missouri Public Service Commission
The Missouri Public Service Commission is the state regulator that sets utility rates and reviews rate proposals for natural gas and other utilities operating in Missouri.
The details
Spire Missouri filed tariff sheets with the Commission on November 2, 2026, proposing a net increase in annual base rate revenues. Before the Commission rules, it reviews the company's books and records and holds local public hearings. Parties that want a formal role must file an application to intervene with the Secretary of the Commission by November 23, either by mail to P.O. Box 360 in Jefferson City or electronically through the Commission's Electronic Filing and Information System.
Timeline
November 2, 2026: Spire Missouri filed its tariff sheets with the Commission.
November 23, 2026: Deadline to file applications to intervene in the rate case.
Within 11 months of filing: The Commission typically decides the rate proposal.
Market Landscape
Spire's request follows the Commission's established rate case procedure, in which a utility files proposed tariffs, the Commission reviews its books and records, and public hearings are held before any change takes effect. The timing structure means that changes to gas base rates are visible to customers only after the review concludes.
Businesses with natural gas accounts in Spire's service areas should model a possible increase in gas base rates as part of near-term energy budgeting. Operators who want to influence the outcome should review the intervention deadline with qualified counsel, since the decision on any change rests with the Commission.
The takeaway
Operators should calendar the November 23, 2026 intervention deadline and the roughly 11-month decision window if their gas costs are material. Track the Commission's local hearing schedule, since the final base rate level will shape natural gas budgets for the coming year.
What happens next
Applications to intervene in the Spire Missouri rate case are due November 23, 2026, and the Commission will hold local public hearings on the proposal before deciding it.
Further reading
Track more utility rate and regulatory developments in the Utilities section.
More information
Review the rate case filing and submit any intervention through the Commission Electronic Filing and Information System at the Public Service Commission's portal.
Source note: This article includes information reported by Central Mo Info.
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