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Longevity is key, Kyrocera has been around for a long time, they build panels in the USA and Japan and last I checked some of their panels were getting close to $2 per watt (really cheap!) but people see 99 cent per watt HappySun panels or whatever from China and they flock to them, the Arco solar panels (Siemens bought them out in 1989) that my parents have are getting close to 30 years old and are still producing at their rated output (not at 80%) and I suspect that they will keep producing at their rated output for another 30 to 50 years or more.
But if you look at what types of solar panels people have issues with, they are the printed solar cells, the flexible solar cells and the Chinese made panels.
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