Interior Secretary Doug Burgum warned the United States is at risk of suffering from blackouts that recently brought most of Spain to a halt due to over-subsidizing intermittent renewable energy sources.

“We just saw in Spain, they were celebrating on April 12th of this past month that they'd shut down their last coal plant. A week after that, they were celebrating the fact that they had their first day of 100% renewables on their system,” Burgum said in an interview with All-In podcast co-host David Friedberg. “Then, the next week, they were a global news story because people were trapped in subways, all airline flights canceled, hospitals were panicking with a lack of power because they had a rolling blackout and grid failure.”