Abstract: Under the dual-carbon development target, the demand for energy storage on the new energy side has been raised from “promoting consumption” to “promoting consumption + actively supporting the grid.” In view of this technical background, this study proposes an optimal configuration method for a multitype energy-storage capacity to enhance the ability of new energy consumption and actively support the grid. A method for extracting the characteristic curves of typical working conditions was introduced to optimize the solving process of the complex model. In addition, based on the historical data of typical new energy power plants, the energy storage configuration requirements and economy under the three scenarios of “active support, ” “promoting consumption, ” and “promoting consumption + active support” were calculated. The results show that the scenario of “promoting consumption + active support” can technically meet the energy storage demand of the new energy side better, and it improves the economy.