Photovoltaic grid-connected power generation is of great significance to alleviate China's energy crisis, emission reduction and environmental protection. At present, the development of China's photovoltaic power generation market depends on the promotion of policies. Therefore, the government should make a difference.
Recently, Zhao Yuwen, vice chairman of the China Renewable Energy Society and director of the photovoltaic branch, said in an interview that photovoltaic grid-connected power generation is of great significance for alleviating China's energy crisis and reducing emissions and environmental protection. At present, the development of China's photovoltaic power generation market depends on the promotion of policies. Therefore, the government should make a difference.
Photovoltaic power generation industry chain formation
It is reported that the development of China's solar thermal and optoelectronic industry has begun to take shape, involving heating and cooling, lighting and industrial electricity, agricultural irrigation, sewage treatment and many other applications. The application of solar energy has achieved good social and economic benefits. For example, the use of solar LED lamps can save more than 1900 kWh per year and save more than 5,000 yuan per year, and the brightness is slightly higher.
At the 2007 World Solar Congress and Solar Energy Exhibition held in September this year, a photothermal optoelectronic integrated concept machine that can supply heat and power is displayed. It can be made into a tile-like direct "cover" into the house. To make the building energy efficient and beautiful.
At the exhibition, the person in charge of an exhibiting company said that the domestic photovoltaic power generation industry has formed a complete industrial chain. The photoelectric conversion efficiency of the unit silicon crystal battery has generally reached about 18%. The photoelectric conversion efficiency of the household 3000 watt grid-connected power generation system is about 14%, and the system life span is up to 25 years. However, the current cost of such a battery is relatively high. Large-scale promotion.
Zhao Yuwen told reporters that at present, the development of China's photovoltaic power generation enterprises is highly dependent on foreign markets, and 95% of these products are exported abroad.
In recent years, China's photovoltaic power generation industry has developed rapidly. The output of photovoltaic cell modules representing the level of industrial development is only 6 megawatts in 2002, 150 megawatts in 2005, and 400 megawatts in 2006. It is expected to reach 800-year this year. 1000 MW, with an annual growth rate of 200-3 00%. According to reports, the development momentum of China's photovoltaic power generation industry comes from the rapid growth of demand in foreign markets, while the growth of demand in foreign markets is driven by policy.
Implement the Renewable Energy Law as soon as possible
Zhao Yuwen believes that photovoltaic power generation is a potential alternative energy source. The government should consider the development of photovoltaic power generation industry for the purpose of finding alternative energy sources, reducing pollutant emissions and environmental protection in China, and not just regard it as a A simple market behavior. The State should implement the Renewable Energy Law as soon as possible, use policies to stimulate domestic market demand, accelerate the scale application of photovoltaic power generation, and rapidly reduce its cost to become a market-competitive alternative energy source.
Zhao Yuwen said that due to the high cost of photovoltaic power generation, it has no market competitiveness at all compared with traditional electric energy. Therefore, the state should promote the development of the photovoltaic power generation market through policy means, provide convenience for its access to the power grid, and increase its scale application. According to calculations, the cost can be reduced by 20% for each doubling of the scale. If relying solely on market regulation, the development of the photovoltaic power generation industry will be very slow, and the market reaction speed of each link will be different. The lag of certain links will inevitably affect the development of the entire market. For example, high-purity silicon, which is a raw material, is now mainly imported, making the link extremely vulnerable to external constraints.
Zhao Yuwen said that companies should consider various factors to consider product costs. Do not attempt to manufacture products with low cost but low quality materials, which would only be counterproductive. Although the cost of photovoltaic cells is high, the performance is stable and the life can be as long as 25-30 years. If the purity of silicon is used, although the cost can be greatly reduced, the photoelectric conversion efficiency will decrease, and the experiment shows that its performance is not Stable, it may not be used for a year.
Concerning the possible future price war in the photovoltaic power generation market, Zhao Yuwen said that healthy market competition can promote enterprises to provide better products and services through the survival of the fittest mechanism, and promote industrial development, but also to avoid the formation of monopoly.
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