Executive Leadership
Martin J. Lyons Jr.
Chairman and President, Ameren Missouri
Marty Lyons was named chairman and president of Ameren Missouri on Dec. 2, 2019 after serving 18 years in a variety of positions within Ameren. He is responsible for Missouri's largest investor-owned energy provider serving more than 1.2 million electric and natural gas customers. ( more )
Kevin Anders
Ameren Missouri Vice President of Operations and Technical Services
Kevin Anders is vice president of Operations & Technical Services at Ameren Missouri. With more than thirty years of experience in the electric utility industry, Anders is responsible for the operation of the distribution system, maintenance of substations, engineering design, and management of major capital projects. Additionally, management of external contractors performing work on the Ameren Missouri distribution system, including tree trimming and vegetation management, are in Kevin's area of responsibility. ( more )
Ryan Arnold
Ameren Missouri Vice President of Division Operations
Ryan M. Arnold was promoted to vice president, Division Operations in October 2021. He leads a team of co-workers responsible for the design, construction, and maintenance of Ameren Missouri's electric energy distribution systems, along with Fleet Operations. ( more )
Ajay K. Arora
Ameren Missouri Vice President, Chief Renewable Development Officer
Ajay Arora is Ameren's first Chief Renewable Development Officer. In this role, Arora is focused on implementing Ameren Missouri's transformational generation plan incorporating cleaner energy resources. ( more )
Stephanie P. Banker
Ameren Missouri Vice President of Nuclear Engineering and Support
Stephanie Banker is currently the vice president of Nuclear Engineering and Support at the Callaway Energy Center. She is responsible for the safe operation of the Callaway Energy Center by ensuring the plant is maintained and operated within its design and licensing basis. ( more )
Mark Birk
Ameren Missouri Senior Vice President Customer and Power Operations
Mark Birk is senior vice president, Customer and Power Operations. He is responsible for the engineering, construction, operations and maintenance of Ameren Missouri's electric and gas distribution systems as well as non-nuclear generation and energy management.
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Barry L. Cox
Nuclear Site Vice President – Callaway Energy Center Ameren Missouri
Barry Cox was named nuclear site vice president, Ameren Missouri, on January 1, 2020. In this role, Cox is responsible for the safe operation of the Callaway Energy Center. ( more )
Fadi M. Diya
Ameren Missouri Senior Vice President and Chief Nuclear Officer
Fadi M. Diya is senior vice president and chief nuclear officer (CNO) for Ameren Missouri. Diya is responsible for all of Ameren Missouri's nuclear operations.
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Timothy E. Herrmann
Senior Vice President – Corporate Safety, Security and Operations Oversight Ameren Missouri
Timothy E. Herrmann was named senior vice president – Corporate Safety, Security and Operations Oversight, Ameren Missouri, in January 2020. In this role, Herrmann is responsible for corporate safety, security, crisis management, nuclear corporate oversight and project management. ( more )
Tara K. Oglesby
Ameren Missouri Vice President of Customer Experience
As Vice President of Customer Experience, Tara K. Oglesby is responsible for effectively driving customer-focused strategies to ensure every interaction leads to a great customer experience. She is responsible for leading departments which play a critical role in delivering a satisfying experience including: Customer Service, Energy Efficiency & Renewables, Customer Intelligence and Smart Meter Strategy & Implementation. ( more )
Patrick E. Smith Sr.
Ameren Missouri Vice President of Economic, Community and Business Development
Patrick Smith Sr. was promoted to vice president of Economic, Community and Business Development for Ameren Missouri Oct. 1, 2021. He leads a team focused on driving energy solutions, including customer renewable energy and sustainability options, clean electrification, and community and economic development, to create sustainable growth for the 500 communities Ameren Missouri serves. ( more )
Warren T. Wood
Ameren Missouri Vice President of Regulatory & Legislative Affairs
Warren Wood joined Ameren Missouri as vice president, Legislative and Regulatory Affairs in 2010. In this role, he oversees state legislative and regulatory policy development and compliance for the company. Wood is a registered professional engineer with a background in utility infrastructure design, construction and operation, and energy policy development. ( more )
