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From Scientific American:
One of the problems with large-scale solar power plants is that they require a huge amount of space. To rise above that problem, Israeli researchers recently patented a system of solar-collecting balloons. The helium-filled globes will be covered with thin-film, flexible photovoltaic panels to capture sun's rays. Designs have been proposed before that include floating or flying solar arrays. But this is a modular system, tethered to the ground through a system of cables. Some cables will deliver helium to the balloons, others will carry the solar energy back to earth. The researchers are testing the arrays on a few sites in Israel.
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Re: 60-Second Science: Solar Energy Via Balloons
