Customers, not people. Could be residential or commercial. Could even be low priority, unoccupied customers in the middle of nowhere. The advances since the adoption of smart meters is grid operators know exactly who is using how much power and who is out in near-real time as the cellular modems (assuming there is cell service in the vicinity) tells them right away when there's a problem. I'm curious if large customers have satellite to cell nanocell access points to keep in touch with remote sites and for their critical vendors, like electricity utilities, to also gain access where there isn't ordinarily cell service.