It really wouldnâ(TM)t. Suppose your sats have 5m square in area - I choose this number because thatâ(TM)s what will fit in a stack in a starship. Now give them fold out solar panels, 4 on each side. Thatâ(TM)s 200 m^2 of panels. Solar panels in space generate about 1kW per square metre, so thatâ(TM)s 200kW of power per satellite. A normal nuclear plant will generate somewhere between 500MW and a GW. So to generate the same power you need 2500-5000 satellites. You can launch around 60 of those on a starship, so weâ(TM)re talking 40-80 launches. Based on SpaceXâ(TM)s predictions thatâ(TM)s about $800m-$1.6bn in launches. The intention is that these satellites go into sun synchronous orbit, at between 500 and 2000km altitude. At 2000km, you can stay there basically indefinitely. At 500km, you need some thrust, but youâ(TM)ll stay up there for 10 years passively. So in reality what weâ(TM)re dealing with here is the lifespan of the satelliteâ(TM)s usefulness, not its orbit that we need to worry about. GPUs get faster fast, but the advances are slower. Itâ(TM)s probably fair to assume that the satellites may last 5 years, maybe even a decade given the 5 years lead time here. Given that, letâ(TM)s assume that we need to launch new sats 5 times to match the lifespan of our nuclear plant. So conservatively, $8bn in launches costs.
How much does a nuclear plant cost? Well, vogtleâ(TM)s new units were predicted to cost $14bn. Theyâ(TM)ve so far cost $37bn. And thatâ(TM)s with a bunch of infrastructure all around them already built.
Thatâ(TM)s a *lot* of spare cash to build and operate the satellites right there.