However unsettling it may be, the truth is that somewhere in Michigan, there is a squirrel giving a transformer the stink eye. Unfortunately for the rest of us, that furry little grudge can turn into a power outage. Consumers Energy says squirrels and other wildlife cause around 8% of its outages when they make accidental contact with lines and equipment, especially substations. On a clear, calm day, when nobody can blame lightning, ice, or a maple tree's lawn dive, a critter is likely the culprit.