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Silicon Falling 9% Widens Slump That Hit Solyndra: Energy

Polysilicon, the raw material used to make most solar panels, is forecast to fall another 9 percent from its lowest in a decade as a supply glut narrows margins throughout the industry.

The average spot price of the material will finish this year at about $22.10 a kilogram, according to the median of seven analysts surveyed by Bloomberg News. The price, which four years ago topped $475, tumbled about 70 percent in the 12 months to $24.27 on April 16, the lowest since at least 2002.