The predecessors of modern solar panels made in the 1970's are still producing power. Today's panels also benefit from 60+ years of development and improvement! The bottom line? Most panels are guaranteed to be producing power for at least 25 years, and most installers will offer a 10-25 year warranty on workmanship and a power production guarantee.
Many concerns about new solar technology focus on its perceived "newness," but the technology was actually developed in the 1950s, and it has been consistently improved upon since then. Initially, solar panels were mainly used by NASA. It's a testament to the power of solar energy that the fundamentals of the technology are strong enough to support satellites and astronauts. Solar panels like the ones that will go on your roof are carefully designed and tested-both in labs and in real life-to withstand rain, snow, hail, wind and, of course, the sun. The predecessors of modern solar panels made in the 1970's are still producing power. Today's panels also benefit from 60+ years of development and improvement! The bottom line? Most panels are guaranteed to be producing power for at least 25 years, and most installers will offer a 10-25 year warranty on workmanship and a power production guarantee.
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