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97,346,204 results
solar panels diy
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The Earth intercepts a lot of solar power: 173000 terawatts. That's 10000 times more power than the planet's population uses.
7,067,027 views
8 years ago
A lot speaks for solar energy. It's clean, renewable – and now even cheaper than energy from fossil fuels like coal or natural gas.
3,044,525 views
3 years ago