Jack Yetiv

Solar Grade: A Silicon Revolution

In additional to decreased cost of silicon, I also expect that watts/gram of poly will probably double in 5 years from todays.

This will be due to two key things: (1) increasing efficiency from about 16% today to mid-20's in 5 years (SPWR should be rolling out 23% panels next year), and (2) thinner wafers.

So even if poly prices did not change, cost of poly per watt will decrease substantially over the next few years. Factor in a drop in poly costs, and overall panel prices are well on their way to costing half as much as they do now within a few years.

Jack