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Solar panels don't last forever and degradation varies wildly, study says

Lucas Mearian | April 21, 2016
Top-performing solar modules were produced in China and Tijuana, Mexico.

A PPA is similar to a lease, but you pay a pre-determined gradient price per kilowatt of solar-generated power that you use over a fixed period of time - typically 20 years.

Two-thirds of the world's solar capacity was installed within the past five years. Solar installations are forecast to quadruple by the end of the decade, growing to 528.1GW by the end of 2020, according to GTM Research.

"Solar continues to grow in popularity, but it's crucial to select equipment that performs successfully over the long term," Jenya Meydbray, vice president of Strategy and Development at DNV GL, said in a statement. "Developing an understanding of how modules perform as they age in the field will highlight technology risks and enable the implementation of an effective procurement quality assurance strategy."


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