On the ground, solar power has its limitations. Solar cells are not especially efficient. It rains. The sun disappears at night. A space based solar panel can generate five times the energy of a similar panel on Earth by circumventing both weather and hours lost to darkness A 2007 study by the National Space Society estimates that a half- mile-wide band of photovoltaics in geosynchronous orbit with Earth could generate the energy equivalent of all the oil remaining on the planet over the course of one year.
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机译：在地面上，太阳能有其局限性。太阳能电池不是特别有效。下雨了。太阳在晚上消失。通过规避天气和因黑暗而损失的时间，基于太空的太阳能电池板可产生的能量是地球上类似电池板的五倍。美国国家太空协会（National Space Society）2007年的一项研究估计，地球与地球同步轨道上有半英里宽的光伏带可以在一年的时间内产生相当于地球上所有剩余石油的能量。
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