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How can solar energy from satellites be transferred to earth?

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help?!??!!?!

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Community Member

well any radio waves you receive from a satellite is a form of the suns energy and its being used to transport usable data
if u want it to power electrical appliances on earth
well thats not feasible right now
but some ways of doing this maybe:
you could try running a wire to transfer electricity-not very practical
you could store it as chemical energy like rechargeable batteries and manually transfer that
you could create maybe a directed heat ray and point it towards the earth to convert to electricity but that would burn up anything that came in its path.
the simple answer is that we have no practical way of doing it or we would be doing it

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Community Member

Hi. By microwave transmission to an antenna on Earth.

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Community Member

Microwaves. A microwave transmitter on the satellite sends a beam to rectifying antenna (called a rectenna) on the surface. This converts the microwave energy to electrical current. This method was first proposed by Peter Glaser in 1973.
The problems are: 1) this method of transferring power has been demonstrated on a small scale here on Earth, no one has ever tried it from orbit, and 2) in order to transmit enough power from space to be usable commercially the rectenna would have to be massive, say 14 square kilometers in size.
Given the cost of that much land, not to mention the cost of launching the materials to build the solar array in orbit, solar power from space simply doesn't make sense economically given the availability of fossil fuels. Maybe when we run out of oil, politicians will give this option more thought.

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Not with reasonable efficiency... yet.

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Community Member

Rather expensive. Much cheaper to collect it on earth.

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