do the man the basic favour of assuming he isn't an idiot. the problem here isn't energy, it's momentum; storing energy over a long time and then releasing it i

do the man the basic favour of assuming he isn't an idiot. the problem here isn't energy, it's momentum; storing energy over a long time and then releasing it in precisely timed bursts to eject reaction mass when you need a course correction is perfectly feasible way to do things. you could probably even supplement the energy collection with some sort of moon-based laser if you threw enough up-front resources at the problem.