The present disclosure relates to an account generation method and apparatus, a system, a medium, and an apparatus. An account number generation method is applied to an account number generation device. The method comprises the following steps: detecting a power generation state of a power generation device to generate first power generation amount information; acquiring a private key of the settlement device; generating a first digital signature according to the first power generation information and the private key; sending the first credential information of the account number to the user terminal, wherein, the first certificate information includes a first digital signature, and the settlement device, upon receiving the verification request for the second certificate information provided by the user, decrypts the second digital signature in the second certificate information with a public key corresponding to the private key, and determines that the second power generation amount information in the second certificate information passes the verification when the decryption is successful. Therefore, the invention guarantees the accuracy of the power generation information and theelectricity tariff settlement of the power generation equipment, so that the electricity tariff corresponding to the power generation information can be delayed settlement.