Abstract: In order to actively implement the national "carbon peak" strategic goal, support the high proportion of new energy consumption and high-quality development, and actively promote thermal power enterprises to participate in thermal power flexibility transformation, through the improvement of operation flexibility, it is expected to reduce the minimum power output of units from 50% to 20 (or 30)%; Increase power regulation capacity; After the flexibility transformation, it can operate stably according to the minimum output for a long time under the corresponding working conditions. After the thermal power flexibility transformation is implemented to make the unit have a certain peak shaving capacity, it is conducive to actively participate in the in-depth peak shaving auxiliary services of the power grid system, which will enable the power generation enterprises to receive considerable compensation and greatly enhance their competitiveness in the industry, It is of great significance to alleviate the increasingly severe production and operation pressure of enterprises and the contradiction between supply and demand in the energy industry, reasonably protect natural resources and promote a virtuous cycle of ecological environment。