Metallurgy method in recent years for solar grade silicon (SoG-Si) the quality requirements of the new technology developed. Since the metallurgical silicon is cheap raw materials, process route is short, energy consumption is only improved about 20% of Siemens France, it was considered most likely to produce low-cost SoG-Si of the new technology. Preparation of silicon metallurgical low cost, low energy consumption, low investment, environment friendliness. Relatively mature in terms of modified Siemens process, metallurgy is a brand new technology new technology, large-scale stable production technology is not mature.

Solar polysilicon process metallurgy method, is the internationally recognized alternative to Siemens, the most promising method of technological process. In the United States in 2009 crystalline silicon technology seminar, a number of photovoltaic solar energy giant will metallurgy method polysilicon photovoltaic cells as a future cost of the main process line. In recent years our research and development of metallurgical method has made significant technological progress, technology reached the international advanced level and has core intellectual property, is currently in the initial stage of large-scale industrial production.

China’s polysilicon industry, metallurgical methods also exist problems in the main show: Guimopubian small and technical exchanges and Xie Zuo Shao, technical Shuiping uneven; Shengchan equipment and Gongyi still relatively backward, the production of technology is not Dagui Mo Wen Ding mature; the cost of PV power depends largely on the production of polysilicon materials, the cost of photovoltaic electricity at present is still higher than the thermal energy, necessary for the state’s policy support and government subsidies.

With excess capacity and the global financial crisis, SoG-Si prices from the speculation in price (up to 500 $ / kg), decreased rapidly to 100 $ / kg, and gradually return to rational prices (60 $ / kg), or to drop to 2004 years ago the price (25 $ per solar grade / kg, electronic grade 40 $ / kg). More than six months, polysilicon and photovoltaic industries of the bubble was quickly racking, many enterprises are closed or discontinued, half-suspended state. Therefore, the polysilicon enterprises already in operation, adjust the pace of development, improve quality and reduce consumption in response to market changes; on the talent-financed enterprises in the construction of polysilicon, by the market slump, a downturn in international prices of raw materials, low-cost to complete the project building, waiting for economic recovery; on non-technical support, no talent and capital of the company, should take this opportunity to adjust the direction of development.

International financial crisis, despite the difficulties caused to many companies, but also for the photovoltaic industry had forced a shuffling process of survival of the fittest. Those backward technology, high costs of enterprises will be phased out. This eliminated, for the PV industry, the more advantages than disadvantages, and it is necessary.

Therefore, the correct analysis of the nature of domestic and foreign markets and solar photovoltaic polysilicon technology, to guide the PV industry in China, especially the healthy development of solar polysilicon industry is important.

At present the major new demand for polysilicon from the solar photovoltaic industry, has become the international development of low-cost, low power SoG-Si production of new wave of technology, and tend to produce low purity of SoG-Si technology and production high-purity electronic grade polycrystalline silicon technology to distinguish lower SoG-Si solar cell production costs and thus lower manufacturing costs, to promote solar PV industry development and popularization of solar energy.

Pursuit of future energy consumption will be less polysilicon market, lower cost, better environmental protection target. With the development of metallurgical technology and sophisticated methods, it will become the mainstream technology of solar polysilicon.

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