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GCL-Poly to build 20GW monocrystalline silicon project in China

EBR Staff Writer Published 13 April 2018

GCL-Poly Energy Holdings, a subsidiary of clean energy conglomerate Golden Concord Group (GCL), is set to construct a 20GW monocrystalline silicon project in Yunnan Province, China.

The company has signed a joint venture (JV) agreement with the Qujing Municipal Government of Yunnan Province to deliver the project.

The facility, which will entail an investment of CNY9bn ($1.4bn), will be constructed in Qujing's Economic and Technological Development Zone.

The new plant will feature CCZ continuous Czochralski monosilicon technology, which uses a special Czochralski crystal growing furnace to realise crystal pulling while feeding and melting. Up to 10 rods can be pulled within the life cycle of a furnace.

Currently, RCZ recharged Czochralski technology is commonly used throughout the industry.

GCL-Poly stated that the crystal rods produced by CCZ are of better quality compared with RCZ.

“The resistivity is more uniform and narrower in distribution, making them more suitable for P-type PERC and N-type batteries,” GCL-Poly said in statement.

In the past one year, GCL-Poly has enhanced CCZ's cost efficiency and product quality through domestic equipment and supply chain development and process optimization.

In April 2017, GCL-Poly had completed the acquisition of SunEdison's fifth-generation CCZ technology, FBR silane fluidized bed technology, and related assets.

GCL-Poly CTO Wan Yuepeng said: "FBR's high-quality granular silicon is the best material for CCZ; the two technologies are complementary and a synergy effect of 1+1>2 can be achieved."

The company believes that the high-tech barrier and high-value-added technology will enhance its core competitiveness.

GCL-Poly Energy Holdings manufactures solar grade polysilicon and operates cogeneration plants and in China.

In April 2017, GCL-Poly invested more than $832m in the construction of a polysilicon plant in China. The facility has an annual production capacity of 60,000MT.

In August 2016, the company acquired assets worth $150m from SunEdison, a US-based renewable energy company.