I don't know why you're worrying about batteries; LEO satellites spend only a few minutes in Earth's shadow at a time. The current model (v2 mini) Starlink sat

I don't know why you're worrying about batteries; LEO satellites spend only a few minutes in Earth's shadow at a time. The current model (v2 mini) Starlink satellite has 105 meter^2 solar arrays, and there's thousands of those orbiting already. That should be in the 10's of kilowatts on each Starlink. (Those solar arrays are so large they're already artificial stars of their own, though they're not designed to be). https://en.wikipedia.org/wiki/Starlink#v2_(initial_deployment) https://en.wikipedia.org/wiki/Starlink#v2_(initial_deploymen... And to repeat what I might have underemphasized: this is an estimate of isotropic power, if you were radiating uniformly in all 4pi directions.