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| SIG will place solar cells in earth orbit  Early in the next decade Space Island Group, SIG, will begin placing huge, mile-wide sheets of solar cells in earth orbit. These NASA-designed structures, called solar power satellites, will convert sunlight into electricity, then use weak, pollution-free, environmentally safe microwave beams to send that energy down to simple antennas anywhere on Earth. The antennas will convert the beams back into electricity and feed it into standard existing power grids at an extremely low cost. The system will operate 24/7 overcoming the drawback of rooftop solar cells and windmills.SIG will also build large, commercial space stations to house their solar satellite assembly and maintenance crews. Some stations will be leased to a wide range of tenants as factories, hotels and entertainment complexes. write your comments about the article :: © 2006 Construction News :: home page |