Regarding grid-side energy storage, in July 2021, NDRC and the National Energy Administration (NEA) issued the "Guiding Opinions on Accelerating the Development of New Energy Storage", wherein they advocated for the exploration of tariff mechanisms for grid-side independent energy storage capacity (NDRC and NEA, 2021).
Regarding the operating model, the grid-side energy storage operator provides services to the grid, while the grid pays the energy storage plant operator for leasing the energy storage plant, which is the capacity tariff. The grid and energy storage operators often have conflicting interests as independent economic entities.
In recent years, China has been developing large-scale grid-side energy storage facilities. However, the deployment of grid-side energy storage has primarily depended on government subsidies.
Based on the capacity tariff calculation model of the Stackelberg game proposed in this paper, the capacity tariff of grid-side energy storage is 415.58 CNY/kW.
In China, grid-side energy storage projects are primarily invested in and operated by the State Grid Integrated Energy Services Group Ltd. or third-party investors (Liu et al., 2023).
Charge and discharge power and state of charge of the grid-side energy storage. According to Fig. 7, it can be seen that the grid-side energy storage chooses to charge at the time of low and flat electricity prices and discharge at the time of peak electricity prices.
Result The application scenarios, business models and cost recovery mechanism of new energy storage on the "source-grid-load" side were sorted out, and the existing problems and policy
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