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Canadian Solar Inc. Message Board

  • rbg5r rbg5r Nov 3, 2013 8:19 PM Flag

    I want to ask a serious question. Do these solar panels that turn sun light into electric power have a shelf life?

    Or do they continue on on on? Im sure there is some maintenance. And being exposed to the sun in the desert must have a degenerating effect. This story cant be this good. There is 100's of square miles in the Nevada desert that has no weather patterns at all, that could supply power to the whole west coast for no cost other that maintenance and original investment.

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    • Testing shows that after 40 years, solar panels retain 80% of their rated power output. Over the system lifetime, panels lose about half a percent of efficiency per year, which means that after the warrantied 25 years they’ve lost a total of 12.5%. Since solar panels don’t have moving parts, they have less wear and tear than other types of equipment, and that helps prolong their lifetime. Other parts of a solar system, like batteries, may occasionally need to be replaced, but the panels themselves should not have to be. The typical PV battery only lasts five to ten years. This means that the average owner will have to replace his or her batteries at least twice during the average life cycle of the system itself, a process that does lead to added costs.

      Sentiment: Strong Buy

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