My DD is very cautious about electric, because she does not want to have to pay large bills : ). So the electric company told her to unplug anything she was not using. Well in some cases this is a good idea, however....she even unplugged her large screen TV. When the repair man was there last week, well, he suggested she not unplug it every night, and to leave it in. Eventdently it is very hard on the power supplies turning them off and on. Anyway kinda off subject, but I never unplug my sewing machine...I don't unplug anything, maybe I should think about doing that on some things.