The ‘Mitsubishi Electric Corp. and IHI Corp. will join a $21 billion project to build a giant solar-power generator in space. The giant solar-power generator in space is scheduled for completion within the next three decades and will beam 1-gigawatt of electricity back to earth.

To make the project cost effective, they must bring back the launch costs tremendously and find a safe and secure way to beam back all those megawatts of power. If they can reduce the costs to a factor of say 10 times the construction costs of a ground solar-power generator, it may be efficient enough due to the 24 hours of 100% sunlight the space solar generator will receive.

Source: TreeHugger

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