I mean, space travel is not free energy. These aliens would have to evolve and invent interplanetary flight. Then be able to travel FASTER than the speed of light to get to us. That’s if they are located in our Milky Way. If they are not, they probably need wormholes or some science fiction level imagination to get to us.
They could experience time differently than us though. Also, Limitless energy doesn’t mean that they conjur up as much extra energy as they need.
They might not care about waiting a or ten thousand years while we do it for them.
I mean, space travel is not free energy. These aliens would have to evolve and invent interplanetary flight. Then be able to travel FASTER than the speed of light to get to us. That’s if they are located in our Milky Way. If they are not, they probably need wormholes or some science fiction level imagination to get to us.