Energy & Science

A New Blow to the Solar-Energy Supply Chain

  • Tongwei shuts polysilicon plant with 20,000-ton capacity
  • Polysilicon prices have risen 56% on production issues
Photographer: Waldo Swiegers/Bloomberg
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Tongwei Co. halted output at a polysilicon factory in southwest China because of flooding, the latest blow to the solar supply chain that has seen rare cost increases this summer due to disruptions.