President and Chief Executive Officer (CEO) of the AES Corporation Andres Gluski speaks during an interview with Reuters in Santiago, Chile June 4, 2019. Picture taken June 4, 2019. Rodrigo Garrido | ReutersThe euphoria over nuclear energy as a power source for data centers is "overblown," the CEO of a major power provider for large tech companies told CNBC in an interview Monday.AES Corporation CEO Andrés Gluski said renewable energy is the future, though natural gas will also play a role as a transition f ...