Missouri Regulators Set Nov. 23 Deadline in Spire Rate Case
Groups wishing to intervene in Spire's proposed natural gas rate increase must file with the Missouri Public Service Commission by November 23.
Updated on Nov. 5, 2026 in Utilities
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Spire Missouri Inc. filed tariff sheets on November 2 seeking a net increase of approximately $208 million in annual natural gas base rate revenues. The Missouri Public Service Commission has set November 23 as the deadline for applications to intervene in the case.
Why it matters
The proposed increase would affect natural gas customers across Missouri, and intervention allows interested parties to take part in the Commission's review before a decision is made. The Commission conducts a review of the company's books and records before ruling on the proposal.
Spire seeks roughly $208 million in added annual natural gas base rate revenue, which it says equates to about $13 per month for the average Spire East residential customer and about $10 per month for the average Spire West residential customer. The Commission typically has 11 months from filing to decide the proposal, and the outcome remains undetermined.
The players
Spire Missouri Inc.
Spire Missouri Inc. is a natural gas utility serving customers in Missouri, including the Spire East and Spire West service areas.
Missouri Public Service Commission
The Missouri Public Service Commission is the state regulatory body that oversees utility rates and reviews rate case proposals in Missouri.
The details
Spire Missouri Inc. filed the tariff sheets with the Missouri Public Service Commission on November 2. Applications to intervene must be filed with the Commission's Secretary by mail or through its Electronic Filing and Information System, and the Commission will hold local public hearings on the proposal.
Timeline
November 2, 2026: Spire files tariff sheets seeking the rate increase.
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 is a new rate case filed under the Missouri Public Service Commission's established review process, which requires a books-and-records review before any decision. The filing enters that process with an 11-month typical decision window.
If approved as requested, the increase would add about $13 per month for the average Spire East residential customer and about $10 per month for the average Spire West residential customer. The figures are Spire's own estimates and the final amount depends on the Commission's decision.
The takeaway
Anyone who wants a voice in how Spire's proposed rate increase is decided must file an application to intervene by November 23, 2026. Missouri residents affected by the rates can follow the case through the Commission's public filings.
What happens next
The intervention filing deadline is November 23, 2026, and the Commission will hold local public hearings on the proposal before deciding it.
Further reading
Explore more coverage in the Utilities section for context on how rate cases like this one unfold.
More information
Applications to intervene and related filings can be submitted through the Commission's Electronic Filing and Information System at psc.mo.gov.
Source note: This article includes information reported by Central Mo Info.
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