jessiej writes, "Even though copper indium gallium selenide (CIGS), a newer type of solar panel, is less efficient than its silicon counterpart, millions are being invested in manufacturing. From the article: 'CIGS panels use far less raw material than silicon solar panels and the factories themselves cost less to build,' $25 million compared to $230 million in one example. These types of panels could even be made into a t-shirt logo."
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