It will be very interesting indeed!! However you can't get something from nothing. A 110 volt/30 amp outlet can only produce so much energy - a physics FACT.
Maybe rsinvester can run the numbers to see if physics even allows it to happen. I sure hope it works. Will make millions for everyone.
Magnetrons generate enormous amounts of heat.
And very little water can absorb it. The heating of the water will come from the operation of the magnetron itself, not from the result of the operating.