How to get old best electricity bill online
5 Answers. You can get your previous bills from your providers website. If you haven't already done so you can open a new account online on your providers website. You will need your account number which is on your physical bill statement. Electricity bill checking. Please enter your 10-digit customer number in order to check your electricity bill. Please take into consideration the information for the due amounts on the site is updated periodically. All liabilities paid before the date of the update will not be seen as due amounts. We'd love to hear from you!