Sounds like the Congress has to cut the Air Force Acronym Budget, the AFAB.
The idea of beaming microwaves back to earth from solar power satellites in orbit is at least 50 years old.
And there's nothing like placing the nation's power infrastructure in delicate and vulnerable orbiting spacecraft that are both easy to shoot down and totally destructive to ground-based astronomy.
Sooo....an 8 kw solar array in space is typically an array 5 meters by 4 meters, 20 square meters. Thus an 8 MW array would be 20,000 square meters.
Naturally an array of this size is going to be shoved around by the solar wind and simple light pressure. Figure in some serious attitude adjusting and station keeping fuel on board, not to mention the vast radiators to shed the waste heat from converting the solar input into the microwave beam. Lots of inefficiency there to show up as unwanted heat. Will this monster be serviced regularly, or is it a throw-away?
Regardless, how is this gigantic thing going to be discarded at it's end of life? Typically LEO satellites are boosted to GEO, thrust into the atmosphere to burn, or left to rot in place, which typically means a random descent at a random time in the future onto a random piece of the earth's surface.
Now, shall we talk about the expense of making such massive deployables, both the solar wings and the radiator panels? Gotta fold them up to fit into the launcher fairing. Gotta unfold them, after. Which means gotta test the living crap out of them on the ground. Which means towering piles of money.