Science

The energy comes from the French grid, one of the cleanest grids in the world.

How much went into this particular experiment is unknown to me. However, without having the paper before me, I recall that the antihydrogen was limited to a few atoms. The annihilation energy would be pure gamma radiation when the antihydrogen was released from the magnetic field and would not be recoverable in any case, and otherwise trivial. I'm quite sure the entire process obeyed the unpopular but irrevocable 2nd law of thermodynamics in spades.

I'm glad to agree with you on something although I'm unfamiliar with you and thus don't know of disagreements we may have had.

The "green hydrogen" cults have been around for half a century and they are pernicious inasmuch as they, among other pop fantasies, are designed to preclude real action on energy issues. Hydrogen is a very dirty enterprise.