Three weeks in, much of Puerto Rico is still without power. Denise Lu and Chris Alcantara for The Washington Post map the lights at night, based on satellite composite data from NASA.
With more than 80 percent of the island’s 3.4 million people still without power, residents have relied on portable generators as workers across the island try to repair the damaged electrical grid.
In the days after Maria, many residents struggled to access gasoline, food, water, money and a cellphone signal to contact family members.
