[LarryMullins]

> Save for power transmission

Isn't that the entire point? Putting solar panels in space has been done regularly the 1950s.

[JumpCrisscross]

I meant that I don't see a near-term use terrestrial use case for better microwave power transmission.

[ben_w]

Drones. Electric aircraft in general, recharging continuously in-flight.

Might be ill-advised for a whole mass of reasons that I, as a software engineer, know naught of; but it would be a use case.

[LarryMullins]

Maybe you could use microwave power transmission (from the ground) to power atmospheric pseudo-satellites, but practical applications seem dubious.