AUSTIN, Texas (KTRK) -- Governor Greg Abbott says the massive outages leaving millions in the dark Monday were caused by private power companies that "fell short," calling it the winter version of "Hurricane Harvey." "The people who have fallen short with regard to the power are the private power generation companies," Abbott said. In a call with ABC13, Abbott expressed frustration that power generators hadn't done enough to ensure the flow of electricity would continue. "There's a separate part of the system that is not working right now, and those are the private companies that generate the power that goes into ERCOT. And it's those private companies that generate power that are not working," Abbott said. "They were working up until about midnight last night, but after midnight, some of them literally froze up, and were incapable of providing power, and some are still incapable of providing power."