Why aren't solar and wind power used as the main source of energy in America?

I never really understood why this would even have to be asked. The sun is free and has almost unlimited energy potential. For that matter, why do solar panels cost so much? Is is just because they are not commonly made? If everyone had solar panels on their own homes, it would significantly decrease the... show more I never really understood why this would even have to be asked. The sun is free and has almost unlimited energy potential. For that matter, why do solar panels cost so much? Is is just because they are not commonly made? If everyone had solar panels on their own homes, it would significantly decrease the amount of energy that needs to be produced by power companies.
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