Guidelines on production, energy consumption and conservation address impending overcapacity as more polysilicon suppliers join the line.
The China government has taken a significant step to spur the development of the polysilicon industry with the release of the Polysilicon Industry Access Standards. The regulations are in response to looming overcapacity in the sector as more makers pursue the line amid robust demand.
|China's production pool includes makers of solar- and semiconductor-grade polysilicon.|
The country’s output surpassed 4,000 tons in 2008 from 1,156 tons in 2007. Projects with combined capacity of 68,000 tons are still in the pipeline.
The guidelines touch on production, energy consumption and conservation efforts of makers. Regarding the first, the directive sets the annual capacity of solar and semiconductor-grade polysilicon projects at 3,000 and 1,000 tons, respectively. This will promote the growth of companies focusing on solar energy projects.
On “green” initiatives, solar-grade polysilicon manufacturers are urged to maintain power consumption at below 80kWh/kg and reduce it to less than 60kWh/kg by year-end.
For suppliers of semiconductor-grade types, it should not exceed 100kWh/kg. Electricity usage for zone melting reduction should be less than 120kWh/kg.
The caps are part of efforts to close down companies with greater than 200kWh/kg power consumption. Although the move is anticipated to jeopardize small and midsize enterprises, it will significantly cut production costs and improve polysilicon quality.
The regulation also sets down rules for the construction of factories and material recycling. Companies are prohibited from building facilities within 1,000m of natural reserves, headwater or residential areas. The location of new plants should be less than 6 hectares per ton.
Meanwhile, the recycle rate of silicon tetrachloride in the reduction tail gas should be at least 98.5 percent and 99 percent for HCl and hydrogen.
China’s polysilicon industry has a manufacture pool comprising more than 80 suppliers.
Note: This article "Industry regulations to shape polysilicon sector" was originally published by Global Sources, a leading business-to-business media company and a primary facilitator of trade with China manufacturers and India suppliers, providing essential sourcing information to volume buyers through our e-magazines, trade shows and industry research.
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