Doggy,
If you had an incinerator that converted garbage to energy for almost free with no emissions, that would indeed be popular, to say the least.
The only way I can believe no emissions is via e=mc squared. Basically, you convert 1/2 the mass to antimatter and let it combine with the rest. Otherwise, whatever you put in has to come out, some of it in a lower energy form such as CO or CO2, or heat would not be produced.
Well, crap! Send me a load of anti-matter, and we'll get 'er started!