Seems like we're in the wrong job Nigel...
Gotta love the terms 'free energy' and 'over unity' being exchanged willy nilly. But yes, technically 'free' energy is something that does not require any consumable source..like wind, waves..solar.these happen anyway without the need for mechanical, chemical or electromagnetic persuasion by us. We are surrounded by 'free energy'...its just a question of getting at it, in a usable form in enough quantity to make the tea.
Over unity? no such thing...unless you ignore all outside energy sources.
Sorry someone spawned a rant :/
Blueteeth