[Panoramix]

Maybe I'm missing something but in space you can have power night and day if you are using mirrors, and you don't have the atmosphere. Solar power in space is 1300W/m^2, whereas average solar power on Earth is about 200W/m^2, including atmosphere, day-night, latitude, etc. So that's a reasonable difference.

It probably doesn't offset the costs of such a project, but damn if I'm starved for some 50's style Massive Engineering projects. Instead all of the brightest minds are focused on optimizing other peoples mouse clicks.

Such a thing could be used to power a Lunar base and for sure boost research in power beaming.