Missouri
Missouri Public Service Commission
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State Intelligence
Updated May 26, 2026Utility Landscape
Ameren Missouri (Union Electric Co.)
IOUEastern Missouri including St. Louis metro, approximately 1.2 million electric customers
Highly active rate case history with significant capital investment programs tied to Callaway nuclear relicensing and grid modernization. Pursuing integrated resource planning with substantial renewable additions while managing coal fleet retirement timelines under MPSC scrutiny.
Evergy Missouri West (formerly Kansas City Power & Light)
IOUWestern Missouri including Kansas City metro and surrounding counties
Post-merger Evergy integration has driven rate case activity focused on cost allocation between Missouri and Kansas jurisdictions. Commission has scrutinized merger savings pass-through commitments and renewable transition pace under the Sustainability Transformation Plan.
Evergy Missouri Metro (formerly KCP&L Greater Missouri Operations)
IOUPortions of western and central Missouri outside Kansas City core
Regulated separately from Evergy Missouri West before the MPSC; rate cases often consolidated with Evergy Missouri West proceedings to address shared infrastructure and transmission cost recovery.
Spire Missouri (formerly Laclede Gas)
IOUNatural gas distribution across St. Louis metro and significant portions of eastern and central Missouri, approximately 630,000 customers
Recent general rate cases focused on infrastructure replacement tracker (ISRS) recovery and pipeline safety capital. Commission has examined customer affordability amid elevated gas commodity costs and scrutinized Spire STL Pipeline affiliate cost allocations.
Empire District Electric (Liberty Utilities)
IOUSouthwest Missouri including Joplin area, also serving portions of Kansas, Arkansas, and Oklahoma
Acquired by Algonquin Power/Liberty Utilities; MPSC has monitored post-acquisition commitments compliance. Active in renewable procurement given favorable southwest Missouri wind and solar resources, with recent rate proceedings addressing storm restoration cost recovery.
Associated Electric Cooperative Inc. (AECI)
coopGeneration and transmission cooperative serving distribution co-ops across rural Missouri and portions of neighboring states
As a G&T cooperative, primarily subject to FERC rather than MPSC retail jurisdiction, but MPSC proceedings affecting member distribution cooperatives create indirect regulatory exposure. Coal fleet retirement planning and capacity resource adequacy are central issues for member systems.
Key Issues
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Ameren Missouri renewable energy integration and IRP compliance: The MPSC is reviewing Ameren's 2025 Integrated Resource Plan, which projects retiring substantial coal capacity by 2032 and adding over 3,500 MW of solar and wind. Commissioners are closely examining whether the transition timeline adequately balances reliability obligations under NERC standards with Missouri's statutory least-cost planning requirements.
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Evergy rate case and merger savings verification: Evergy Missouri West and Metro face ongoing MPSC scrutiny over whether promised post-merger synergy savings of approximately $300 million have been properly quantified and flowed through to Missouri ratepayers, with consumer advocates and the Missouri Office of Public Counsel pressing for independent audits in any forthcoming general rate case.
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Spire Missouri ISRS tracker and pipeline safety capital recovery: The Infrastructure System Replacement Surcharge mechanism is under pressure as cumulative tracker balances grow; the MPSC and intervening parties are debating whether annual ISRS filings are being used to circumvent full rate case review of Spire's capital investment prudency and cost of capital.
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Grid modernization and advanced metering infrastructure deployment: Both Ameren Missouri and Evergy have proposed or are advancing AMI deployments requiring MPSC approval of cost recovery mechanisms; the Commission is evaluating net benefits analyses, cybersecurity plans, and low-income customer protections associated with smart meter rollouts.
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Callaway Nuclear Plant future and cost recovery: Ameren Missouri's Callaway Unit 1 license renewal application with the NRC and the potential construction of Callaway Unit 2 remain open regulatory questions; the MPSC must ultimately address whether future nuclear capital expenditures qualify for Construction Work in Progress rate base inclusion under Missouri law, a politically and economically significant determination.
Upcoming
Estimated deadline for MPSC Staff initial comments in Ameren Missouri's 2025 IRP compliance review docket; procedural schedule anticipated to set evidentiary hearing for late 2026 based on prior IRP case timelines.
Estimated: Spire Missouri annual ISRS filing review period concludes; MPSC expected to issue order approving, modifying, or suspending the surcharge adjustment for the upcoming rate year, with Office of Public Counsel opposition anticipated on capital scope grounds.
Estimated: Evergy Missouri West general rate case decision anticipated if a new rate case is filed in Q1 2026 consistent with the company's signaled rate review cycle; statutory 11-month review clock would place final order in this window.
Estimated: MPSC technical conference on grid modernization and AMI cost recovery standards expected in fourth quarter 2026, following Commission staff completion of a grid modernization policy investigation opened in response to legislative interim committee recommendations.
Commissioner Watch
View all ↗Limited public information is available about Kayla Hahn Ph.D.'s specific regulatory background and the details of her appointment as Chair of the Missouri Public Service Commission.
Limited public information is available about Maida J. Coleman's background prior to or concurrent with her appointment to the Missouri Public Service Commission.
Limited public information is available about John P. Mitchell's specific background and the details surrounding his appointment to the Missouri Public Service Commission.
Limited public information is available about Glen Kolkmeyer's regulatory background and the precise year of his appointment to the Missouri Public Service Commission.
Staff
71| Name | Title | Phone |
|---|---|---|
| Sarah Fontaine | Director of Strategic Communications | (573) 751-9300 |
| Kristy Manning | Senior Policy Advisor to Commissioner Jason R. Holsman | (573) 526-7751 |
| Loyd Wilson | Director of Administration | (573) 751-7435 |
| Michael James Abbott | Senior Project Manager | (573) 526-9821 |
| Lorie Alexander | Administrative Assistant to the Chairman of Missouri Public Service Commission | (573) 751-4221 |
| Douglas Anderson | Policy and Legal Advisor to Commissioner John Mitchell | (573) 645-5419 |
| Nathan Bailey | CPA | (816) 889-3944 |
| Christopher Boronda | Utility Regulatory Auditor | (573) 751-1964 |
| Malachi Andrew Bowman | Associate Engineer | (573) 526-4174 |
| Alexis Branson | Utility Regulator Auditor | (573) 526-0763 |
| Benjamin Howell Burton | Utility Regulatory Auditor | (314) 244-2135 |
| Amanda Conner | Senior Utility Regulatory Auditor | (573) 751-7427 |
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