If you are an SDG&E customer who has an 11-digit SDG&E account number, please enter two (2) leading zeros (0) before the start of your SDG&E account number, and eliminate the last digit, when opting up, opting out, opting down or returning to CEA. This addition is required due to an SDG&E update. Your updated 13-digit SDG&E account number will be reflected in the SDG&E invoice you are to receive in April 2021.