What is polysilicon used for?
Polysilicon, a high-purity form of silicon, is a key raw material in the solar photovoltaic (PV) supply chain. To produce solar modules, polysilicon is melted at high temperatures to form ingots, which are then sliced into wafers and processed into solar cells and solar modules. Source: National Renewable Energy Laboratory,
Where is polysilicon made?
China accounted for 77% of global polysilicon production in . Manufacturing takes place mostly in Xinjiang, Yunnan or Sichuan where electricity is cheaper lower and the raw material is close by.
Why has the polysilicon industry consolidated?
The polysilicon industry has increasingly consolidated, with the top-five companies accounting for 73% of global production in compared to 60% in , according to BNEF. This is mainly due to a number of companies shutting down capacities in recent years after a period of overcapacity.
What technology is used to make polysilicon?
Three are three main technologies to produce polysilicon. The ‘modified Siemens process’ is currently the dominant technology in China. Trichlorosilane (TCS) is produced using two readily available metallurgical-grade silicon (of 95-99% purity) and liquid chlorine.
How will Xinjiang impact the polysilicon market?
A potential market impact could be a further tightening of the polysilicon market, especially if a premium emerges for polysilicon sourced outside of Xinjiang, which is a low-cost producing region due to its low electricity costs. This could cause polysilicon prices to rise and hold at higher levels.
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