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.
Wednesday, April 16, 2008
Posted by AT & EE Staff