Ameren Corporation

Ameren Corporation is a rate-regulated electric and natural gas utility holding company serving approximately 2.5 million electric and 900,000 natural gas customers across Missouri and Illinois, generating $8.80 billion in revenue in fiscal 2025. Through its subsidiaries — Ameren Missouri, Ameren Illinois, and Ameren Transmission — the company owns and operates a vertically integrated generation, transmission, and distribution system across a territory that sits at the center of one of the most consequential demand stories in the American utility sector today.

This is a story about what happens when a historically steady, Midwestern regulated utility is suddenly positioned at the front of the queue for data center load growth. Ameren has signed electric service agreements representing 2.2 gigawatts of demand from hyperscalers in Missouri, with another 1.2 gigawatts of construction agreements that management expects to convert to binding contracts in the near term. The capital spending required to serve this demand, combined with the normal replacement and modernization of a century-old grid, puts the company's investment pipeline above $70 billion through 2035. The file turns on a single question: whether the regulatory compact in Missouri and Illinois can sustain the pace and scale of investment that the demand outlook requires, without transferring an unacceptable share of risk to shareholders.