Each satellite generates 50 MW. I was using a 196 solar pannel 166 accumlator array updated with the advanced solar mod to mark 2. 3 Satellites were enough to power my base and I converted the old array area into a more kick-ass looking launch facility. The satellites were realtively cheap to launch as well but be careful. They stack in 5 and I'm not sure if the mod counts all of them if launched, I only ever launched 1 at a time.
