The subject is GEO satellites (was Umbra length is about 10x diameter)

--- In spacesettlers 11212, Lucio de Souza Coelho wrote:
> The umbra of any solar power station would be negligible for all
> practical purposes; people in the Earth surface covered by the
> so-called "umbra"

The subject is GEO communications satellites that are solar-powered. When we discuss "interference" from SPS satellites, we are not referring to "interference" with the Earth. We are referring to interference with GEO communications satellites by way of cutting off their power sources.

> You are making analogies with an eclipse

Nope.