>>487349I'm not the anon you replied to.
I want power satellites to succeed for several reasons:
Beaming power via microwave-to-rectenna or monochromatic-laser-to-band-gap-tuned-photovoltaic-collector, that is really elegant. It's 70% efficient, which is about as good as you can get with a power-grid, but most of the waste heat remains in space. And you can beam power to just about anywhere. Buildings, ships, and perhaps even trains and planes. Best of all, there are no more middlemen in a energy-beam.
The oil-barons that lobby for war and regime change would loose the power to do that. You can't own the sky, and there are no governments to overthrow in the sky either.
Obviously the amount of power that shines our way is enormous, we could become a Level-1 civilization on the Kardashev Scale, if this works, that's enough power to live in the nice future like in classic Star Trek.
However this is not a new idea, the first serious research into this was during the early space race where both Nasa and the Soviets considered using mirrors and a broad range of heat generators to power microvave power transmission. When photovoltaic cells became more efficient it spawned new projects. Many countries are researching this. By the way, the little brother of solar-power-satellites is satellite based night illumination by reflecting sunlight back to earth creating a similar effect to a full moon, economizing on electricity for outdoor night illumination. I imagine something like that taking off first, and consider it as a sign of this technology branch becoming viable.
Over the last 3/4 of century, there have been many proposals, with varying designs, and none got build, usually because of cost.
I would also consider that the Chinese might not primarily build this for power-generation, they might want to use this as a project to focus their space-industry. You know a goal-post. If they can build this mega project, they'll have the industry lined up and dialed in to tackle space industrialization, the massive power generation capacity is a really nice bonus.
There is of the course the possibility that they figured something out all the other power-sat projects didn't, and they're about to lap everybody 57 times, and I'll have egg on my face, and you get to say i told you so. Like i said i wouldn't mind being proven wrong.