Can your electric be shut off in the winter?

Answer 1

It depends on the state and power company. Some companies (even in Northern states) will turn off you electricity during the winter unless you are making a effort to pay a part of the bill, have a infant in your home, or are on a public assistance program.
The Illinois Commerce Commission mandates the shutoff moratorium from December 1 to March 31 each year.

Answer 2

Yes, it is a purchased service. There are very few exceptions to this rule.

Answer 3

This may vary from jurisdiction to jurisdiction according to how local law is written. Youi would have to check your local statutes (or with your power company) in order to find out for sure.