Elon Musk has created and demonstrated a viable space transportation system. How about expanding it into an actual space station of his own, complete with solar satellite panels?
The idea's been around for decades. At first it was just an object in orbit that collected sunlight, concentrated it, and beamed it to earth for collection - an enormous convex mirror. The sunlight boiled water to run steam turbines, just like any other power plant, but no fuel was needed, just sunlight.
This idea never got off the ground, because of startup costs and the danger to birds and aircraft. The idea was refined to lose the mirror, collecting sunlight in solar panels instead, which would be beamed to earth via microwave - much more elegant and safer.
Unlimited electric power on demand - that's an idea that might appeal to Elon Musk. He's not afraid to spend money, a whole pile of it, to reap such an unlimited reward. Maybe it's time to run the numbers again?