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" ... As with all of the other elements of solar panels – which have fallen in price by as much as two-thirds since 2011 - backsheets have been subjected to extreme pricing pressures. Lamontagne comments “You have to balance the expected performance and the cost structure. The backsheet is about 3-5 percent of total panel costs, and costs have fallen just in the past year, in part because other alternate materials have become available and because of price pressures. They are about 50-75 percent lower than when we historically started manufacturing over ten years ago.” ... "