People's Daily Online, Beijing, August 13 (Reporter Du Yanfei) Against the background of carbon peaking and carbon neutrality goals, the development of renewable energy sources such as wind power and photovoltaic power generation in my country is once again facing favorable policies. The National Development and Reform Commission and the National Energy Administration recently issued the "Notice on Encouraging Renewable Energy Power Generation Enterprises to Build or Purchase Peak Shaving Capacity to Increase the Scale of Grid Connection" (hereinafter referred to as the "Notice"), encouraging power generation enterprises to build or purchase peak shaving energy storage by themselves. capacity to increase the scale of renewable energy power generation installed on the grid.

In recent years, my country's renewable energy has developed rapidly. As of the end of June this year, the country's installed renewable energy power generation capacity reached 971 million kilowatts. From January to June, the country's renewable energy power generation reached 1.06 trillion kilowatt hours. However, outstanding shortcomings and problems such as insufficient flexibility and insufficient adjustment capabilities of the power system restrict the development of a higher proportion and larger scale of renewable energy. The key to achieving carbon peak is to promote the development of renewable energy. The key to promoting the development of renewable energy is consumption. The key to ensuring the consumption of renewable energy lies in grid access, peak regulation and energy storage.

"In order to ensure the realization of carbon peak and carbon neutrality goals and the construction of a new power system with new energy as the main body, arrangements must be made in advance to simultaneously promote the installation, grid connection and consumption of renewable energy power generation." Researcher at the Energy Research Institute of the National Development and Reform Commission Shi Jingli said that as one of the long-term and important measures to achieve the goals of carbon peaking and carbon neutrality, the "Notice" is important for ensuring the large-scale, high-proportion, high-quality, and market-oriented development of renewable energy sources such as wind power and photovoltaic power generation. will play a positive role.

“To continue to increase the penetration rate of wind power and photovoltaic power generation in the power system nationwide, especially in areas with a high proportion of renewable energy, effective measures must be taken on the power supply side, grid side, and user side, and all parties must adopt reasonable allocation and adjustment. We will continue to improve the flexibility of the power system and increase the system's regulation capabilities by building peak and energy storage facilities, promoting the flexibility transformation of thermal power, accelerating the construction of grid infrastructure, giving full play to the role of demand-side response, and strengthening the connection between grid sources and loads." Shi Jingli believes. .

“On the power supply side, build integrated projects of wind power, photovoltaic power generation, hydropower, thermal power, and energy storage. On the grid side, use flexible resources such as energy storage power stations to support the volatility of wind power and photovoltaic power generation and ensure the balance of the grid. On the user side, Use integrated energy systems to stabilize the volatility of wind power and photovoltaic power generation and ensure grid security. The three must go hand in hand and be coordinated,” Zeng Ming, director of the Energy Internet Research Center of North China Electric Power University, said in an interview with a reporter from People’s Daily.

In order to ensure the grid connection and consumption of renewable energy power generation, the "Notice" clarifies that power grid enterprises must effectively assume the main responsibility for the construction and development of the power grid and the grid connection and consumption of renewable energy, and coordinate the construction of peak load regulation capabilities and resource utilization. Each year, new In the scale of grid connection and consumption, power grid enterprises should bear the main responsibility, and power supply enterprises should bear appropriate responsibility for grid connection and consumption of renewable energy.

The "Notice" points out that in addition to the grid companies' responsibility for guaranteed grid connection of renewable energy sources such as wind power and photovoltaic power generation, renewable energy power generation companies that are still willing to invest in construction are encouraged to build their own energy storage or peaking resources on a voluntary basis. Increase the grid-connected scale, or assume peak-shaving responsibilities through market-based transactions with peak-shaving resource market entities to increase the grid-connected scale of renewable energy power generation installed capacity.

The "Notice" stated that in terms of proportion requirements, in order to encourage power generation enterprises to participate in the construction of peak shaving resources in a market-oriented manner, the scale exceeding the guaranteed grid connection of power grid enterprises shall initially be based on a power ratio of 15% (duration of more than 4 hours). If the peak capacity is reached, the construction will be prioritized and connected to the grid according to a linking ratio of more than 20%.

Industry insiders believe that the "Notice" will further promote the development of integrated project development models for wind power, photovoltaic power generation, hydropower, thermal power and energy storage, further promote the transformation of new energy from the main body of electricity to the main body of electricity and electricity, and better build a new energy-based industry. The main body of the new power system.

In Shi Jingli’s view, new market-oriented wind power and photovoltaic power generation projects should be built and connected to the grid simultaneously with the configured peak shaving and energy storage capabilities. The peak shaving and energy storage capabilities are only applicable to the current year. If it is not used up, the remaining amount cannot be carried forward to the next year for the construction of wind power and photovoltaic power generation projects, but it can be traded to other power generation companies in need through market-based methods that year.

The "Notice" requires that self-constructed, jointly constructed, purchased, and traded peak-shaving resources and supporting wind power and photovoltaic power generation projects must be within the same province, and be carried out from time to time in accordance with the peak-shaving capacity promised by the enterprise through strengthening operation supervision and irregularities. Measures such as dispatching operations and improving reward and punishment and evaluation mechanisms will truly give full play to the province's allocation of peaking resources to increase the scale of renewable energy grid connection in the province, improve the utilization rate of wind power and photovoltaic power generation, increase the proportion of local renewable energy, and promote clean energy transformation. and the role of achieving carbon peak and carbon neutrality goals.