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^ Is that all the land on earth, or just the usable land (dessert city etc.) Lets not forget wind, tidal, Geo, infrared etc. Far more than enough renewable energy potential.
There's storage of that excess energy during the day to deal with too, like a "green" battery.
The one thing i don't like about solar is that the lifespan of a panel is anywhere from 20-40 years. If you're going to be making macro scale installations, you're not going to want to replace the whole thing every half a century.
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I try to be helpful. I'm not an expert.
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