
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).
A division of JAXA, the Institute of Space and Astronautical Science (ISAS) has already prepared a prototype of the SPS2000, a 10 megawatt demonstration solar-power satellite.
ISAS is also undertaking a project where an experimental satellite will be tested for wireless power supply of several hundred kilowatts. Ground experiments are being held for scrutinizing the influence of high-voltage discharge which is a sheer necessity for large-capacity power generation in space. They are also spending time on the impact of space debris on the solar farm.










Ion Tiger in flight. The 550-watt fuel cell is show in the box in the lower left corner.
























Copyright (c) Liz Kuball.
Copyright (c) Liz Kuball.
Copyright (c) Liz Kuball.
Copyright (c) Liz Kuball.
Copyright (c) Liz Kuball.
Copyright (c) Liz Kuball.

New Krink Metallic K-60 colors.






