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RegulatorIndex

Illinois

Illinois Commerce Commission

Source ↗

Commissioners

5
NameRoleContact
Michael T. CarriganCommissioner(312) 814-2850Fax (312) 814-1818Add Michael T. Carrigan to StatecraftCRM ↗
Ann McCabeCommissioner(312) 814-2856Fax (312) 814-1818Add Ann McCabe to StatecraftCRM ↗
Stacey ParadisCommissioner(312) 814-2850Fax (312) 814-1818Add Stacey Paradis to StatecraftCRM ↗
Conrad ReddickCommissioner(312) 814-2850Fax (312) 814-1818Add Conrad Reddick to StatecraftCRM ↗
Douglas P. ScottChair(312) 814-2850Fax (312) 814-1818Add Douglas P. Scott to StatecraftCRM ↗

Recent changes

Commissioner Watch

  • Doug ScottReappointment · Chair

    The Illinois Senate confirmed Doug Scott to a new five-year term as ICC Chairman on February 26, 2025, following his reappointment by Gov. Pritzker in January 2024.

Contact

Address
160 North LaSalle Street, Suite C-800, Chicago, IL 60601
Phone
(312) 814-2850Fax (312) 814-1818
Website
icc.illinois.gov ↗

Trust and provenance Structured state intelligence

A RegulatorIndex state record assembled from public roster data, official commission materials, and module-specific sources. Each module displays a date only when its source data records one.

Source accessed

Methodology and standardsReport a correctionCorrections are reviewed against authoritative sources before any public record changes.

Staff directory

129

Upcoming hearings

26Official calendar ↗

Active proceedings

2
  • Updated

    P2026-0065 · Gas · Active

    Peoples Gas $202M Rate Increase

    Peoples Gas filed a $202.3 million annual rate increase request in January 2026 to fund replacement of over 1,000 miles of aging iron gas mains in Chicago. Typical residential bills would rise $10–11/month if approved.

  • Updated

    25-0213 · Electric · Active

    ComEd Energy Efficiency Portfolio Plan 2026–2030

    Commonwealth Edison's energy efficiency program portfolio plan for 2026–2030, filed with the ICC in 2025 pursuant to the Climate and Equitable Jobs Act.

State intelligence

Updated

Utility landscape

  • Commonwealth Edison (ComEd) IOU

    Northern Illinois including Chicago and surrounding collar counties, approximately 4 million customers

    ComEd operates under a multi-year rate framework established by the Climate and Equitable Jobs Act (CEJA) and is subject to ICC performance-based ratemaking. The utility's grid modernization plan and distribution rate proceedings have drawn significant scrutiny following its 2020 federal bribery scandal and associated compliance obligations.

  • Ameren Illinois IOU

    Central and southern Illinois, serving approximately 1.2 million electric and 830,000 natural gas customers

    Ameren Illinois has been active in formula rate proceedings and has pursued significant capital investment under its grid modernization framework. The company filed for a natural gas rate increase in 2024 and is navigating clean energy transition requirements under CEJA, including renewable portfolio standard compliance costs.

  • Nicor Gas (Southern Company Gas) IOU

    Northern Illinois excluding Chicago, serving approximately 2.2 million natural gas customers

    Nicor Gas completed a major rate case settlement in 2023 and is pursuing infrastructure replacement investment recovery under its Accelerated Main Replacement Program (AMRP). The utility faces increasing pressure to develop gas system long-term planning consistent with state decarbonization goals.

  • Peoples Gas Light and Coke Company IOU

    City of Chicago natural gas distribution, approximately 860,000 customers

    Peoples Gas remains embroiled in controversy over its System Modernization Program (SMP), a pipe replacement initiative with costs that have ballooned to over $10 billion. The ICC has repeatedly scrutinized cost recovery prudency, and the program's future scope and ratepayer cost allocation remain active contested issues.

  • MidAmerican Energy Company IOU

    Northwestern Illinois including the Quad Cities region, electric and natural gas service

    MidAmerican holds a relatively modest Illinois footprint compared to its Iowa operations but is subject to ICC jurisdiction for its Illinois electric and gas customers. The company's aggressive wind generation buildout in Iowa has limited cross-border regulatory friction in Illinois to date.

  • City of Springfield (City Water, Light and Power) muni

    City of Springfield and immediate environs, electric and water service

    CWLP is a municipally owned utility largely exempt from ICC rate jurisdiction but subject to oversight for wholesale transactions and certain interconnection matters. The utility is managing the transition away from its coal-fired Dallman units under state environmental pressure and CEJA-aligned planning requirements.

Key issues

  • Peoples Gas System Modernization Program cost recovery and prudency review: ICC proceedings continue to evaluate whether the full scope of SMP capital expenditures exceeding $10 billion are recoverable from ratepayers, with intervenors arguing systematic mismanagement and cost overruns warrant disallowances.
  • CEJA clean energy standard implementation: The ICC is overseeing utility compliance with the Climate and Equitable Jobs Act's renewable portfolio standard escalation, energy transition carbon standard, and equitable energy upgrade programs, with annual reporting and tariff proceedings active for both ComEd and Ameren Illinois.
  • ComEd performance-based ratemaking and grid modernization plan review: The ICC is evaluating ComEd's multi-year integrated grid plan filings, including proposed capital deployment for grid hardening, EV infrastructure, and distributed energy resource integration, with significant disputes over performance metrics and revenue requirement levels.
  • Natural gas system long-term planning and decarbonization risk: Following a 2024 ICC order initiating a gas planning docket, Nicor Gas and Peoples Gas face requirements to model long-term demand scenarios incorporating building electrification and hydrogen, raising contested questions about stranded asset risk and cost socialization.
  • Energy storage procurement and interconnection queues: The ICC and ComEd/Ameren are facing growing backlogs in generator interconnection requests driven by utility-scale solar and storage projects, with stakeholders pressing for ICC action to streamline processes consistent with MISO tariff reforms and FERC Order 2023 compliance timelines.

Upcoming

  • 2026-09-15

    Estimated deadline for ICC final order in Ameren Illinois natural gas rate case (Docket No. 24-XXXX); decision expected to address infrastructure rider recovery and low-income program cost allocation following evidentiary hearings completed in spring 2026.

  • 2026-10-01

    Estimated ComEd annual formula rate reconciliation true-up filing deadline under its multi-year rate plan; filing will trigger ICC staff and intervenor review period with evidentiary proceedings likely commencing in Q4 2026.

  • 2026-11-18

    Estimated ICC evidentiary hearing commencement for Peoples Gas SMP Phase III prudency review; proceeding expected to address 2023-2025 capital expenditures and whether continued pipe replacement scope is justified given alternative technology assessments submitted by ICC staff.

  • 2027-01-31

    Estimated deadline for Illinois utilities to submit CEJA-required clean energy plan updates to the ICC reflecting revised renewable procurement targets and progress toward 100% clean energy by 2045; filings will inform subsequent ICC dockets on RPS compliance and renewable energy credit pricing.

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