21 February 2026
Disclaimer: This is a simplified summary of a public company filing. See full disclaimer here.
Ameren Illinois Co
CIK: 18654•1 Annual Report•Latest: 2026-02-18
10-K / February 18, 2026
Company
Overview
The company operates as a utility involved in electric power and natural gas distribution, with activities across generation, transmission, and regulated services. It emphasizes renewable energy and zero-emission standards and runs customer energy-efficiency programs. The report addresses human capital management and industry issues, and it includes mine safety disclosures, reflecting involvement with mining assets or coal-related operations. The filing also covers governance, cybersecurity, legal proceedings, and executive leadership.
Core business areas and functions
- Rates and Regulation
- Interactions with regulatory bodies, including rate setting, tariff approvals, and other regulatory actions.
- Transmission
- Ownership and operation of high-voltage transmission networks for moving electricity from generation sources to distribution systems and customers.
- Supply of Electric Power
- Procurement, dispatch, and sale of electric power across wholesale and/or retail activities.
- Power Generation
- Ownership and operation of generation facilities (coal, gas, nuclear, hydro, etc.) to produce electricity.
- Renewable Energy and Zero Emission Standards
- Investments in renewable assets (solar, wind, etc.) and compliance with standards aimed at reducing emissions.
- Customer Energy-Efficiency Programs
- Programs that help customers reduce consumption and improve efficiency.
- Natural Gas Supply for Distribution
- Procurement, storage, and distribution of natural gas to end customers as part of gas utility operations.
- Human Capital Management
- Workforce management, including hiring, training, benefits, diversity, and related initiatives.
- Industry Issues
- External factors affecting the business, such as regulatory, market, technological, and environmental developments.
- Operating Statistics
- Performance indicators and operational metrics referenced in the full report.
- Available Information
- References to supplemental filings, exhibits, and other sources where additional details are provided.
Governance, risk, and disclosures
- Item 1A. Risk Factors
- Material risks facing the business.
- Item 1B. Unresolved Staff Comments
- Item 1C. Cybersecurity
- Disclosures related to cybersecurity risk and controls.
- Item 2. Properties
- Description of properties owned or leased.
- Item 3. Legal Proceedings
- Ongoing legal matters.
- Item 4. Mine Safety Disclosures
- MSHA-related disclosures tied to coal mining activities or coal-related assets.
- Information about Our Executive Officers
- Details on executive leadership.
