Utility bills up to the date that you file for bankruptcy can be included on your claim. After that date, however, you will have to pay any charges you incur. The utility company may require a deposit to continue service.
You can list utility bills on your bankruptcy. This will allow you to retain services while avoiding suspension. Your utility company may request some sort of deposit from you in order to continue using the service. The deposit can be estimated to be one to two month's average bill.
Current utilities can be put on a bankruptcy claim, but only if they are behind and only if one is going to file and include them in a Chapter 13 bankruptcy which is a pay back.