That's what they said about fusion power.
That's what they said about fusion power.
Sure, it might work. But we have no guarantees.
And there is a natural constraint, regardless of how good the technology is. Solar energy at the top of the atmosphere at the Equator is 1.37kW/m**2. Even at perfect efficiency, in space, it takes a square kilometer of solar collector to replace one big steam generating electrical plant.