Here are the 10-K annual reports from Ameren Illinois 4 PFD (AILLP) in our archive since June 2025, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 10-K covers the audited annual report, with the full financial statements, so if you follow AILLP and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full AILLP filings page.
Ameren Corporation files a combined annual report describing its rate-regulated electric and natural gas utilities in Missouri and Illinois and transmission subsidiary ATXI. The company operates through four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission.
The report explains how state commissions and FERC set rates, including allowed ROEs such as 8.72% for Ameren Illinois electric distribution and 10.48% for certain transmission service. It outlines long-term plans to add natural gas, renewable, battery storage, and nuclear generation, retire coal plants by 2042, meet renewable and zero-emission standards, manage fuel and hedging, and oversee workforce, safety, and cybersecurity risks.