In Puerto Rico, the LUMA Energy corporation says it could take up to three days to restore electricity after the island’s energy grid collapsed Wednesday, plunging the entire U.S. territory into darkness for the second time in four months. It’s the latest in a series of blackouts since Puerto Rico privatized its electrical grid in the wake of Hurricane Maria in 2017. Puerto Ricans pay some of the highest electricity rates in the U.S. despite frequent outages.