Posted by AT & EE Staff
When most of us think balloons, we think, "I never should have had children." But these solar balloons are a lot more promising than their carnival counterparts. Constructed of photovoltaic fabric, the soft tank is filled with helium and tethered by power wire above a home, saving space on the ground while optimizing sun exposure. But it's not just the physical footprint that makes the technology so appealing. It's the price per watt.
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