This is actually one of the classic "disasters" in Sim City 2000[1]. The "Microwave Powerplant" works by bouncing a concentrated beam of sunlight to earth. It provides plentiful, pollution free power... The only downside is sometimes the satellite beam misses, melting everything surrounding it.
The microwave beam would be pretty wide by the time it reached the surface. The power levels wouldn’t make an effective weapon but would take up a sizable footprint for the collectors.
If it isn't many times stronger than sunlight, just build more solar panels.
If it is many times stronger than sunlight, that's pretty dangerous!
MW power transmission is about 85% efficient at the receiving end. Solar is much lower than that.
Solar is much lower than that, but it has the advantage of being doable on the ground.