My initial thought was that it would use more fuel than it created. Haven't had the time to view the video yet, but proof of concept doesn't equal economic viability. The only way I see us generating the energy we need, while limiting pollution and GHGs, in the long term is to make fusion power a reality. We need something akin to the Space Race and earmark more money to that end. For more info:
ITER - the way to new energy or
Department of Energy - Fusion
For once I almost agree with you. First quit wasting money on GW research which is useless and generates nothing useful for mankind and divert that funding into fusion research.
Sounds like a plan.