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Wireless Energy From Space

submitted by longde

1 decade 4 years 11 months 2 weeks ago

Japan has serious plans to send a solar-panel-equipped satellite into space that could wirelessly beam a gigawatt-strong stream of power down to earth and power nearly 300,000 homes. The satellite will have a surface area of four square kilometers, and transmit power via microwave to a base station on Earth.

Putting solar panels in space bypasses many of the difficulties of installing them on Earth: in orbit, there are no cloudy days, very few zoning laws, and the cold ambient temperature is ideal.

A small test model is scheduled for launch in 2015. To iron out all the kinks and get a fully functional system set up is estimated to take three decades.

A major kink, presumably, is coping with the possible dangers when a 1-gigawatt microwave beam aimed at a small spot on Earth misses its target. The $21 billion project just received major backing from Mitsubishi and designer IHI (in addition to research teams from 14 other countries).