Exxon Mobil's CEO Rex Tillerson says the U.S. will be energy self-sufficient by 2020, CNBC reports.
"I think it is realistic that the U.S. could be energy self-sufficient by the end of this decade," Tillerson told CNBC on Thursday.
"We're already the world's largest natural gas producer [and] last year, crude oil production surpassed levels not seen since the 1980s," he added.
In November, the International Energy Agency predicted that the U.S. would surpass Saudi Arabia as the world's top oil producer by 2016.
And in October, U.S. crude oil production exceeded imports for the first time in nearly 20 years, the Energy Information Administration reported.