Not long ago, the 2010 China Solar Thermal Power Generation Industry Development Summit Forum was held in Liling, Hunan. Photovoltaic power generation became a hot topic for discussion among the participants. “At present, there are hundreds of thousands of kilowatts of solar thermal power plants in foreign countries, and domestic photovoltaic power generation is still in the megawatt demonstration stage. The reason why there are so many differences from photovoltaic power plants is that technology, cost, and policy issues cannot be overlooked. "The CEO of Noriruite Shen Wenming said.
Accelerating technology upgrades is the key
China's 2007 Medium- and Long-Term Development Plan for Renewable Energies proposes that by 2010, total solar thermal power generation capacity will reach 50,000 kilowatts, and total solar photovoltaic power generation capacity will reach 20,000 kilowatts; by 2020, total solar thermal power generation capacity will reach 200,000 kilowatts will be equivalent to photovoltaic power generation. However, at present, the total capacity of solar photovoltaic power generation under construction and signed in China has reached 1.4 million kilowatts, and solar thermal power generation has not yet formed a market. The two have formed a great contrast.
Li Junfeng, deputy director of the Energy Research Institute of the National Development and Reform Commission, said: “From the standpoint of the development strategy of solar thermal power generation, the independent innovation capability and technological upgrading speed of solar thermal power generation can provide strong support for solar thermal power generation.†The core equipment of the solar thermal power generation system is a concentrating and collecting device and a mirror transmission and tracking system. At present, only a handful of enterprises in China possess the relevant technology and equipment manufacturing capabilities.
Shen Wenming, general manager of Shandong Norit New Energy Co., Ltd., pointed out: “In terms of system technology, the solar thermal industry must go through medium and high temperature routes. The successful development of medium-temperature solar vacuum tubes and medium-temperature vacuum tube solar collectors has broken through. At the European Solar Energy Conference in 2010, European experts said that the full-glass vacuum solar collector collector's thermal utilization limit of 120°C has greatly expanded the application of solar thermal energy, and the company's next development of the high-temperature thermal collector system The thermal temperature of 300°C-500°C will play a crucial role in the field of solar thermal power generation."
Everything depends on reducing costs
At present, China has made breakthrough progress in key technologies for solar thermal power generation, and tower, trough, and dish systems all have demonstration projects under construction. It is a very long process for the solar thermal power generation industry to succeed from the source of technology and finally to use it globally. However, the realization of solar photothermal conversion concentrators can achieve high efficiency and low cost, which is the key to the commercialization of solar thermal power generation.
According to Shen Wenming, general manager of Shandong Norit New Energy Co., Ltd., “If the investment of solar power generation units is above 50,000 yuan/KW, this high investment is difficult to promote and the market is invisible; if it can be reduced to 3, Million / KW, the market began to appear, if you drop to 15,000 yuan / KW, its market will be very large, and then dropped to 1 million / KW, then its market is immeasurable." Therefore, he believes that the realization of large Scale solar thermal power generation must overcome the bottlenecks of low efficiency and high cost in solar thermal power generation.
"According to European and American countries, it is expected that the cost of solar thermal power generation will be close to the cost of coal-fired electricity after 15 to 20 years." Shen Wenming said: "Coteothermal power follows the law that the higher the scale, the lower the cost. At present, the industry's universally recognized scale is The cost of generating electricity for a 1,000 MW, 1,000 MW CSP power plant can be reduced to 0.7 to 0.8 yuan per kilowatt-hour.The technical problems of CSP have been solved, but the initial investment is very large, such as a 1,000 megawatt scale needs 20 billion. The upfront investment, which is unbearable for many companies."
Policy support is essential
Nowadays, in the whole country, the electricity price of solar power has not been determined, which directly affects the development of the market and the enthusiasm of investors. As a result, industrial manufacturing develops rapidly, but the application market is slow, which is extremely unfavorable to the long-term healthy development of the industry. .
Relevant sources believe that it is time for decision-making and planning departments to make real efforts to develop solar power. Although the government is currently bidding for solar power generation and hopes to find a reasonable electricity price target, relevant measures such as taxes and subsidies should also be put on the agenda as soon as possible.
"Solar solar thermal power generation needs to be developed in a healthy manner. National policies are very important. On-grid tariffs and government subsidy policies must be introduced." Shen Wenming believes that the development of solar thermal power generation industry can completely follow the development road map of photovoltaic and wind power industries.
Bao Yun, director of the Energy Efficiency and Enterprise Energy Management Committee of the China Energy Research Association, said that China's solar thermal power generation industry still has a long way to go. If the government can provide a favorable atmosphere for the development of solar thermal power generation in terms of policy orientation and taxation, it will promote the rapid development of the industry.
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