www.telegraph.co.uk/earth/energy/solarpower/6536752/Japan-pl...
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The plan is to create a miles-wide array of photovoltaic panels, like the solar panels used on Earth, and place it in a geostationary orbit. - Solar rays are at least five times as powerful in space as they are at ground level, allowing the huge panels to gather vast quantities of energy. -- A report by researchers at Mitsubishi Heavy Industries said: "Since solar power is a clean and inexhaustible energy source, we believe that this system will be able to help solve the problems of energy shortage and global warming. "The sun's rays abound in space." Once collected, the solar energy would be beamed down to a substation on Earth, using laser beams or microwaves.