Spaced based weapon thoughts
Discussions of beaming energy via microwave to earth has been proposed from the 1970’s.
The 1000 W magnetron a 30$ off the shelf item found in every home, has been available from 1945 (RADAR).
Sun light in space ~ 3-4x stronger than on surface (1000 W/M2) or 3500 W/M2
For 1 Megawatt 1000 sq M of panels are needed. or 33x33 M assume 30% eff
Mega Watt would be simply 1000 magnetron with 1000 sq meters of solar panels. Trivial for the trillion dollar SDI DOD budgets.
With megawatt incinerating cars, discolor shipping containers and incinerating homes would be simple.