Abstract:In view of the initial stage of China"s electricity sales market opening, the fuzziness and randomness existed in the customer-level evaluation of electricity retailers, as well as the subjectivity and uncertainty of the evaluation indicators of different regional electricity retailers, a reasonable and effective method for evaluating the customer level of the electricity retailer is proposed in this paper. Based on the operating principle of electricity retailer, this paper constructs the customer evaluation index system of electricity retailer from three aspects: economy, safety and environmental protection. In the evaluation, the uncertainty analysis method of cloud model was used to establish a comprehensive evaluation model of electric power company customer-level. Finally, 7 customers from a certain electricity retailer are selected for case analysis, each customer level is evaluated and optimization suggestions are proposed.#$NLKeywords: electricity retailer; customer-level; cloud model; comprehensive evaluation