In recent years, with the rapid growth of the scale of new energy generation, China's electricity auxiliary service market has developed rapidly, but the matching of policies and market environment is still indispensable. It is imperative to implement effective supporting policies in stages.

1、Firstly, it is necessary to conduct forward-looking planning and research to avoid ineffective resource allocation. At present, various regions require the configuration of energy storage systems with a certain proportion and duration, but there is little basic analysis of the energy storage demand of the power system, and there are unreasonable design situations in the configuration proportion and energy storage duration. It is also necessary to clearly guide various regions to do a good job in calculating energy storage demand under different renewable energy development situations, ensuring that the addition of energy storage systems can be fully utilized.

2、 Secondly, it is necessary to clarify the entry threshold for energy storage and ensure high-quality application of energy storage. Various regions have proposed policy directions for supporting renewable energy storage systems, but the energy storage access standards have not been clearly defined. There is a possibility of using low-quality energy storage systems to obtain priority construction and grid connection conditions. Before implementing supporting projects, it is necessary to clarify the technical standards for project admission to ensure the safe and reliable application of energy storage.

3、Once again, we need to implement supporting policies for the application of supporting projects and promote the development of friendly renewable energy models. The development of new energy power stations should provide appropriate support for supporting projects to increase power generation and reduce the risk of power abandonment in such projects. It is also necessary to clarify the main identity of energy storage projects participating in the electricity market as soon as possible, and call on energy storage systems to participate in peak shaving and frequency regulation auxiliary service markets to obtain returns on investment.

In the situation where the electricity market and price mechanism cannot yet reflect the application of supporting systems, it is necessary to introduce transitional policies to support the coordinated development of renewable energy and energy storage. In the long run, promoting the coordinated development of renewable energy and energy storage requires price compensation. Therefore, it is necessary to establish a market-oriented long-term mechanism to achieve cost guidance for "green value". At present, the cost of solar and wind energy storage in some regions around the world can compete with traditional thermal power. On the one hand, we need to continue to promote renewable energy parity and reduce dependence on renewable energy fiscal subsidies. On the other hand, we also need to promote comprehensive market-oriented reforms to make electricity prices reflect the true cost of energy supply. The sense of responsibility of the whole society to undertake energy green development needs to be fully popularized, and ultimately the cost of energy green development must be borne. However, in the current situation where the promotion of green development is inconsistent with the pace of price reform, it is necessary to promote the development of renewable energy and energy storage industries through value compensation mechanisms, and stimulate related industries to reduce costs and increase efficiency.