SORRY WHAT? Send the energy back in the form of microwaves? I'm assuming this means lining something up on the ground to receive it? What if its goes off course

SORRY WHAT? Send the energy back in the form of microwaves? I'm assuming this means lining something up on the ground to receive it? What if its goes off course or is knocked by a small meteorite? are all those waves going to just fry us instead?