Ernest J. Moniz is an American nuclear physicist and former government official. He currently serves as president and CEO of the Energy Futures Initiative (EFI), a nonprofit organization focused on climate and energy technology issues, which he co-founded in 2017.
He is also the co-chair and CEO of the Nuclear Threat Initiative (NTI). From May 2013 to January 2017, Moniz served as the 13th United States Secretary of Energy in the Obama administration.