When the electricity stops in modern civilization, pretty much everything else stops. Not even gasoline-powered vehicles can get far before they are obliged to seek a fill-up—which they cannot get because gas pumps rely on electricity to operate.
When I wrote "The storms are only going to get worse" three weeks ago, I thought the world would have to wait quite a while for a storm more devastating than hurricanes Harvey and Irma. But instead, Hurricane Maria followed right after them and shut down electricity on the entire island of Puerto Rico except for those buildings with on-site generators.
Another casualty was drinking water because, of course, in almost every location, it must be moved using pumps powered by electricity. In addition, the reason we remain uncertain of the full scope of the damage and danger on the island is that the communications system (powered by electricity, of course) failed almost completely.
The Associated Press reported that as of September 30, 10 days after Maria's landfall, about 30 percent of telecommunications had been restored, 60 percent of the gas stations were able to dispense fuel and half of the supermarkets were open.