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Couldn't reuse the idea of solar balloon? Answered

Turn into making solar gatherer, and solar water heating element, as well in places where sun can't be attainable like jungle, forest or where your in a urban element like cityscape...balloon would be one way off to produce energy, heat when there very little light and very little means to gain it would be universal way to gather what people need when there no power, no water? if you get my understanding what gives why aren't there anyone figuring a blue print on this idea, it also would help people who trying live off grid.