This has been a dream for well over a century. There are several problems with any such system:-
1. Cost and losses involved in converting power on wires to electromagnetic radiation. This part of the problem is a lot closer to being solved than any time in the past, thanks to modern developments in high power solid state devices.
2. Losses due to "beam spread". No matter how much effort is put into antenna design, only a device similar to a maser can produce a sufficiently concentrated beam. And as far as I am aware, these devices are all hopelessly inefficient. Moving to a higher frequency makes the problem easier, but the higher the frequency, the greater the losses due to moisture, dust fog etc.
3. Any beam transmitting energy levels useful for power transmission is effectively a death ray, likely to cook any bird, bat, insect, aircraft, hang glider, drone, etc that enters the beam. It does not take much imagination to see leaves carried aloft in a high wind being ignited and starting new fires in conditions like we had last summer. This is the "killer" issue for this dream, even if technology makes it possible.
In summary - it may become feasible for some very special situations, but overall - I can't see it.
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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