Solar cells aren't as clean as you think. They require a bunch of rare metals... which requires mining, and the kind of mines required aren't exactly... "eco-friendly". That being said, still better.
its kinda true. Solar panels are definitely better than they used to be however the statement of them not returning more energy than it took to make is a misnomer. The amount of power that is generated by wind and solar is higher than the amount of power it took to create them. Solar and wind are also the cheapest form of clean energy you can make.
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