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As indicated in a study Josh wrote on just a couple weeks ago, the lifespan of a solar power system is far longer than the 20 years most analysts use to calculate solar power costs. Last November, Susan featured one that was going strong at 30 years. A Facebook fan notes that solar panels at the Technical University of Berlin have been in operation for 31 years. Similarly, Kyocera, one of the oldest solar panel manufacturers in the world, recently posted on the fact that a number of its early installations continue to generate electricity reliably nearly 30 years after installation.
