１９９８年，国务院国办法１４６号文件明确提出：推进厂网分开，引入竞争机制，竞价上网，建立规范有序的电力市场。为稳妥起见，国家要求上海、浙江、山东作为第一批试点单位，率先开始“厂网分开，竞价上网”的改革，东北三省则紧随其后。六个试点电网依据本地区的实际情况 In 1998, Document 146 of the State Council’s State Administration of the People’s Republic of China clearly stated that the separation of factories and networks, the introduction of competition mechanisms, the bidding of prices, and the establishment of a standardized and orderly power market. For the sake of security, the state required Shanghai, Zhejiang, and Shandong as the first batch of pilot units to take the lead in starting the reform of “separating plant and network, bidding for access to the Internet,” and the three northeastern provinces followed. Six pilot power grids based on the actual situation in the region