Cheaper solar power heads mainstream

Solar power should become a mainstream energy choice in three or four years as companies raise output of a key ingredient used in solar panels and as China emerges as a producer of them, according to a report by an environmental research group.

“We are now seeing two major trends that will accelerate the growth of photovoltaics: the development of advanced technologies, and the emergence of China as a low-cost producer,” Janet Sawin, a senior researcher at the Worldwatch Institute and an author of report, said in a statement.

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