[RWebb]

you can get 50% eff. out of some lab cells, so he might have seen a show on that

Let's see... 4x2 = 8 ft2 and @ 15% eff., you could get that down to ~~ 1 ft2 if you had a magic panel with 100% eff. but that is still larger than a CD ---> you'd need some really high magic to put a smackdown on the laws of thermodynamics...

myabe Maxwell's Demon could do it