In another developing country where there are frequent power outages, the building decided to get a diesel-powered generator for power backup, with all resident

In another developing country where there are frequent power outages, the building decided to get a diesel-powered generator for power backup, with all residents sharing the bill for the diesel. Residents started running their washing machines only on backup power (so all at the same time), the justification being that they've already paid for the diesel so why should they pay more for the electricity?