Satellite beams solar power down to Earth, in first-of-a-kind demonstration

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https://www.science.org/content/article/satellite-beams-solar-power-down-earth-first-kind-demonstration

By Daniel Clery, Science. 

Excerpt: ...A satellite launched in January has steered power in a microwave beam onto targets in space, and even sent some of that power to a detector on Earth, the experiment’s builder, the California Institute of Technology (Caltech), announced on 1 June. ...The transmitted power was small, just 200 milliwatts, less than that of a cellphone camera light. But the team was still able to steer the beam toward Earth and detect it with a receiver at Caltech. “It was a proof of concept,” says Caltech electrical engineer Ali Hajimiri....

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