There are two ways to make that work. You can burn at an ultra high temperature or you can install scrubbers. Both of those reduce boiler efficiency. Note th

There are two ways to make that work. You can burn at an ultra high temperature or you can install scrubbers. Both of those reduce boiler efficiency. Note the power output on the one I was referencing was only 90MW, and it serviced a metropolitan area with ~1 million people. That’s 90 watts of base load per person, which is not zero, but it is close. Average energy demand per person in the US is about 3.4kw (including commercial and industrial, etc), so it’s mostly just useful for waste disposal. It’s possible the boilers on it were crappy, but if they were above 50% efficient (which is plausible, given its age), then the upper bound on a modern plant is 180W per person unless people start throwing away a lot more flammable stuff. Thermodynamics say that whatever energy you get from gasification will also be rounding error. https://en.m.wikipedia.org/wiki/Electricity_sector_of_the_United_States https://en.m.wikipedia.org/wiki/Electricity_sector_of_the_Un... Cheap graphene might be worth it though.