German revelation of distributed generation: subsidy policy becomes the key to development

[Source: "New Industry" February issue / Hu Yanling] The new policy of distributed photovoltaic power generation released by the State Grid and the National Energy Administration immediately caused a sensation in the domestic PV market.

“The whole domestic PV industry is expecting that the new policy will bring new vitality to the bleak PV industry.” In early December 2012, Xingye Solar (00750.HK) chief engineer Luo Duo told “New Industry” that due to distributed There are still many details about photovoltaic power generation, such as the benchmark price of electricity, which is directly related to the return on investment of distributed photovoltaic power generation. “So most PV manufacturers and investors are waiting, there is not much actuality. action."

Luo Duo pointed out that although the new policy of distributed photovoltaic power generation solves the problem of grid connection, there are still many problems in the actual operation and wide-scale promotion. China's development of distributed photovoltaic power generation should also learn from and learn from the successful experience of Germany, it is possible to truly promote distributed photovoltaic power generation.

"Germany's distributed photovoltaic power generation has a formed business model. Starting from the application for photovoltaic power plants, local governments, power companies, insurance companies and other related departments will participate in the entry, is a complete business system." Luo Duo said.

German revelation

Germany is one of the most successful countries in the world to promote distributed photovoltaic power generation. However, the conditions of light resources in Germany are not good. The average annual effective utilization hours is only about 800 hours. At the same time, it is limited by land use and power grid structure. Photovoltaic power generation is mainly distributed development.

As of the end of 2011, the total installed capacity of photovoltaic power generation in Germany reached 24.7 million kilowatts, of which distributed photovoltaic power generation system capacity accounted for nearly 80%, the main application form is rooftop photovoltaic power generation system, the average capacity of a single power generation system is only 20 kilowatts.

“In Germany, building a small photovoltaic power station on the roof of the home is like a domestic purchase of home appliances, which has become a habit.” Luo Duo said that the German photovoltaic power generation subsidy policy also has characteristics, using differential and declining fixed on-grid tariffs.

On the one hand, differential on-grid tariffs can guarantee a reasonable return on investment for distributed PV investors. On the other hand, decreasing the on-grid tariffs year by year is conducive to reducing power generation costs and encouraging new projects to be put into production as soon as possible. In addition, the adoption of a nationwide unified feed-in tariff is conducive to saving management costs and still reflects the principle of economic efficiency throughout the society.

The most important thing is that Germany has encouraged users to use their own electricity for self-use in 2009. The higher the proportion of self-use, the higher the subsidy. In other words, it is to let the user reasonably determine the installed capacity of their own photovoltaic power generation, minimize the waste power online, and reduce the investment in the transformation cost of the distribution network.

As a result, the return on investment of photovoltaic power generation for self-use is very good, and the return on investment for commercial photovoltaic systems is relatively long.

“So many German families will install their own photovoltaic power plants as soon as they purchase new homes.” Luo Duo said that the process in Germany is very simple. Once declared, the insurance company will evaluate the power generation, determine the subsidy price and the subsidy period, and provide risk protection for the future operation and maintenance of the PV power plant.

“If you have a large roof, you can't build a power station with limited economic capacity, you can rent a roof.” Luo Duo said that there is usually a PV fund in every town in Germany. The source of the fund is all spontaneously invested by the residents in the town. Rent a free roof in the town to make a larger photovoltaic power station.

Therefore, the fundamental success of the German distributed photovoltaic power station lies in the fact that a good operating system forms a commercial atmosphere for photovoltaic power generation, and everyone becomes an investor and user of photovoltaic power generation.

"At present, China's distributed photovoltaic power generation operation system is still not perfect, and it will take some time to practice, in order to truly realize the distributed photovoltaic power generation business system with Chinese characteristics." Luo Duo said.


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