What We Know—and Don’t Know—About Recent Power Grid Attacks

The lights are coming back on in Moore County, North Carolina, where tens of thousands of people were plunged into darkness after two power substations were shot up over the weekend. 

But days later, there are still no answers about who might have been responsible for the attack or what their motivation was. 

The attack on the Duke Energy substations coincided with a planned drag show in Southern Pines that had been the target of an escalating harassment campaign by far-right extremists in the area. The timing fueled speculation that...