Not a physicist, but I wonder how much energy was necessary via the radiofrequency generator to get a flame that looked like it could produce about 5 watts of power.
It's not such a big deal when the energy equation doesn't really work out and my big question is why didn't this distinguished engineer comment on this.
Too bad there isn't more interest in using fresnel prisms (those screens that were standard in the last round of projection big screen TV's) to capture solar heat and create steam turbine generated electrical power. There are literally 100,000's of deisel generators laying around unused, waiting to play a role as emergency backup power sources for hospitals, critical business etc. Each of these could be retrofitted to also produce steam generated electricity using an array of fresnel prisms. see the link below:
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