Our Leadership Team
Southern Nuclear leadership helps build the future of energy with innovation, integrity and excellence. Meet the visionaries shaping the next generation of nuclear power.
Peter (Pete) P. Sena III
Pete Sena was appointed Chairman, President and CEO of Southern Nuclear on June 29, 2024, having previously been appointed President in 2023 after joining the company in July 2019 as Executive Vice President and Chief Nuclear Officer (CNO).
Our commitment to providing safe, reliable, and clean energy is at the heart of everything we do. We take pride in our role as a leader in the nuclear power industry and are dedicated to driving innovation and sustainability for a brighter future. Whether you’re here to learn about our operations, explore career opportunities, or stay updated on our latest projects, we hope you find the information you need. Thank you for visiting.
~ Pete Sena, Chairman, President and CEO, Southern Nuclear
Richard Libra
Executive Vice President and Chief Nuclear Officer
Rick Libra was appointed Chief Nuclear Officer at Southern Nuclear in April 2023, having served as Senior Vice President of Operations since joining the company in October 2019.
Earl Berry
Vice President of Engineering
Earl Berry serves as the Vice President of Engineering, where he supports the fleet’s work to improve equipment reliability and helps grow its technical leadership.
Shane Camp
Vice President of Human Resources
Shane Camp oversees Human Resources, Labor Relations, Talent Management and Talent Acquisition.
Cheryl Gayheart
Vice President of Regulatory Affairs
Cheryl Gayheart oversees the company’s licensing and regulatory strategy.
Ho Nieh
Vice President, INPO Loaned Executive
Ho Nieh, an officer of Southern Nuclear, is on loan to the Institute of Nuclear Power Operations (INPO), where he is fully dedicated to supporting the Continuous Monitoring organization.
Millicent W. Ronnlund
Vice President, General Counsel, Compliance Officer & Secretary
Millicent W. Ronnlund represents Southern Nuclear and is responsible for its Compliance and Concerns organizations.
John B. Williams
Senior Vice President of Technical Services and External Affairs
John Williams oversees fleet support functions essential to the safe and reliable operation of Southern Nuclear’s operating fleet and provides strategic leadership and direction for all external Southern Company nuclear efforts.
Edwin (Sonny) D. Dean
Site Vice President of Joseph M. Farley Nuclear Plant
Sonny Dean became Site Vice President of Plant Farley in November 2023, following four combined years of service as Site Vice President at both Plant Vogtle Units 1&2 and Plant Hatch.
Matthew Busch
Site Vice President of Edwin I. Hatch Nuclear Power Plant
Matt Busch became Site Vice President of Plant Hatch in December 2023, after serving as Operations Director at the site for over three years.
Johnny Weissinger
Site Vice President of Alvin W. Vogtle Electric Generating Plant, Units 1 & 2
Johnny Weissinger became Site Vice President of Vogtle Units 1 & 2 in December 2023, after serving as both Plant Manager and Site Vice President at Plant Hatch.
Patrick Martino
Site Vice President of Alvin W. Vogtle Electric Generating Plant, Units 3 & 4
Patrick Martino is Site Vice President of Vogtle Units 3 & 4, a position he assumed in 2022.