Solar grade silicon: Technology status and industrial trends
This is depicted in Fig. 2 where it is shown that to believe in a polysilicon price of USD 20 per kg (or more), one must believe that specific usage of silicon can be lowered to 4.5 g per Wp (or below) and that cost of converting the polysilicon to finished PV-modules can be USD 0.405 per Wp (or less) if the PV-mid stream – ingots, wafers, …