During hibernation, the animals don't eat anything.....So, when they are hibernating, those animals can get energy by burning the the stored fat from the fatty food and can survive until they wake from hibernation
Atmospheric electricity is the scientific study of electrical charges in the earth’s atmosphere.
The electricity is stored inside of the clouds, thunderstorms act as a giant battery charging up the electrosphere. This sets an electric field through the atmosphere.
They form due to the continual electrification of the atmosphere.