Ameren appoints ex‑TVA nuclear chief Timothy Rausch to board

Ameren names ex‑TVA nuclear chief to its board

Board appointment strengthens company nuclear expertise and strategic planning

Ameren Corp. says Timothy S. Rausch will join its board of directors effective March 1, adding a veteran nuclear executive to the St. Louis‑based utility’s governance ranks. Rausch is a former executive vice president and chief nuclear officer of the Tennessee Valley Authority, and Ameren says his three decades of industry experience and operational focus on safety and reliability will support its diverse generation resource strategy. Martin J. Lyons, Ameren’s chairman, president and CEO, calls Rausch “a recognized leader in nuclear generation” and says nuclear will remain an important element in ensuring reliable, resilient and affordable energy for customers.

The appointment signals a sharper internal focus on how nuclear generation fits into Ameren’s long‑term planning as the company balances investments across generation, transmission and distribution. Board directors expect Rausch’s experience leading nuclear fleets at large utilities to inform capital planning and asset performance reviews, and to strengthen oversight of regulatory compliance and operational risk. The move comes as utilities nationwide weigh the role of existing and potential new nuclear capacity in achieving decarbonization targets while maintaining grid reliability.

Rausch brings credentials across major U.S. nuclear operators, having been with TVA through July 2025 and earlier holding senior nuclear roles at Talen Energy, PPL, Exelon Nuclear and FirstEnergy. Ameren highlights his leadership background and technical training — an MBA from Cleveland State University and a BS in nuclear engineering from the University of Cincinnati — as complementary to board deliberations on technology choices, outage management and long‑term resource adequacy.

Operational and policy context

Ameren frames the hire within broader regulatory and grid modernization challenges in the Midwest. The company’s transmission arm, Ameren Transmission Company of Illinois, operates in the Midcontinent Independent System Operator territory, where policy decisions on resource mix and reliability affect planning and rate‑regulated projects.

Company footprint and customer base

Ameren says it serves about 2.5 million electric customers and more than 900,000 natural gas customers across a 64,000‑square‑mile area through Ameren Missouri and Ameren Illinois. For more information, the company directs readers to Ameren.com.