The National Development and Reform Commission recently issued the Interim Measures for the Administration of Distributed Generation, which proposes that enterprises, specialized energy service companies, and various types of power users, including individuals, be encouraged to invest in the construction and operation of distributed power generation projects, and to waive the license for power generation of distributed generation projects. . Lin Boqiang, director of the China Energy Economics Research Center at Xiamen University, believes that the approach proposes a government support policy for distributed generation and clarifies the positioning of distributed generation.

Lin Boqiang said that developed countries account for a relatively high share of distributed energy. In particular, some of the more affluent European small countries. It is estimated that the share of distributed energy generation in Denmark has reached 53%. Germany's distributed generation has reached 20%, Japan and India have reached 14% and 18% respectively. There are more than 6,000 distributed energy stations in the United States. 7.8% of installed capacity is mainly based on natural gas combined heat and power supply and combined cooling, heating and power supply. The development of distributed energy in our country has just started and there is a lot of room for improvement. Even if the distributed generation such as natural gas is taken into account, the total installed capacity in the country is still small. There are many micro-distributed power generation (such as small hydropower and biogas, etc.) in the vast rural areas of China, but the proportion of electricity is very small.

Grid companies should ensure full purchase of excess generation from distributed generation

Lin Boqiang believes that grid connection is a big problem in the development of distributed generation. Distributed generation is basically self-employed, but it must be connected to the grid to survive. For example, a household using electricity generated by solar power is sufficient, but there is no means of energy storage. When the sun is not available, there is no electricity at home, so it is necessary to access the Internet.

In this regard, the method requires that the grid companies are responsible for distributed generation of external grid access facilities and investment construction for the transformation of public grids caused by access, and provide convenient, timely, and efficient access to grid services for distributed generation, and distribution of investment operations. The project unit (or self-employed, home user) of the power generation facility signs a grid-connected agreement and purchases and sales of electricity contracts. Grid companies should establish distributed power generation and grid-connected work processes, and set up and publish locations and contact information for cities and counties to receive reports from distributed generation investors to improve service efficiency and ensure accessibility. At the same time, distributed generation is mainly self-employed, with excess electricity being available on the grid, and the grid regulating surpluses. Grid companies should ensure that priority is given to the generation of surplus electricity generated by distributed generation and full purchases.

For distributed generation of distribution networks with a voltage rating of 35 kilovolts and below, the grid companies should simplify the process and apply for network integration, and provide consulting and debugging services; they should be connected to small hydropower stations and voltage levels above 35 kV. Distributed power generation into the distribution network, the approach requires power grid companies should be based on their access methods, power usage range, do a good job on grid management, and provide related services.

Granting construction fund subsidies for distributed generation

The regulations stipulate that subsidies for construction funds or subsidies for power generation per unit will be given for distributed generation that meets the conditions. The subsidy for construction funds is limited to the general service scope of electricity. For the distributed generation of electricity in rural areas, pastoral areas, remote areas and islands, as well as the scientific and technological research, standard formulation and demonstration projects of distributed generation, the state has provided financial support.

The measures also explain the pricing problem of distributed generation network access, adopting two-way metering power settlement or net power settlement, and may consider the peak-valley price factor. The settlement period is settled monthly in principle.

Lin Boqiang believes that cracking the bottleneck of the development of distributed generation, support measures need to be further refined. The policies or opinions issued today are mostly principled, general-oriented policies, and the specific detailed rules are not clearly defined, including the completion of power generation management, quality control measures, technical assessment standards, grid access procedures, and the most important different regions. Electricity price subsidy standards, etc.

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