Central Maine Power (CMP) has recently changed their account number format and assigned all customers new account numbers. New account numbers will be 11 digits. Old account numbers were 13 digits. Customers will not know their new account number until they receive their first bill after the system update. If customers chose to enroll with XOOM after 10/30, they need to call the utility to receive their new account number if they haven’t received their first bill with new account number.