Energy Northwest recently announced that it has selected two experienced leaders from within the organization for key executive roles that will help shape the future of the Washington State joint action agency’s operations and strategic growth.
Dawn Sileo has accepted the position of executive vice president and chief nuclear officer, following the retirement of Grover Hettel.
"With over 20 years of experience in the energy industry, including critical leadership roles in nuclear oversight and organizational effectiveness, Dawn brings a depth of expertise and a long-standing commitment to our mission," the JAA noted.
She originally joined Energy Northwest in 2001 as a project manager for the Packwood Lake Hydroelectric Project relicensing project. She earned her senior reactor operator license in 2004 and became a control room supervisor at Columbia Generating Station.
Her career since includes serving as vice president for Independent Oversight at Entergy Corporation’s nuclear fleet. She also held the position of deputy director of Industry Leadership and Development and served as the Organizational Effectiveness leader at the Institute of Nuclear Power Operations. She rejoined Energy Northwest in 2024 as vice president for Corporate Support Services.
Marcus Harris has been appointed vice president for Corporate Support Services. He joined Energy Northwest earlier this year as Chief of Executive Projects.
In his new role he will oversee our Human Resources, Occupational Health, Organizational Effectiveness and Information Services teams.
"With decades of leadership experience in financial strategy and operational excellence, Marcus’ participation on the Electric Power Research Institute (EPRI) Artificial Intelligence (AI) committee positions him uniquely to drive our strategic goals and empower us to navigate the future of energy innovation," Energy Northwest said.
He previously served as chief financial officer and deputy chief operating officer at the Bonneville Power Administration, overseeing operations across 31 hydroelectric projects, 15,000 miles of transmission infrastructure, and the largest fish and wildlife mitigation program in North America.
