Clearly, though, the Bloom Box is still not a zero emissions tech and would only cut emissions by roughly 50% relative to the national average, unless it runs on landfill gas or biogas or hydrogen from electrolysis fueled by zero-carbon electricity (which would be much more expensive as you have to add cost of electrolysis unit, higher cost electricity, and about 30% conversion losses in electrolysis).
Like the first book, the new book surveys the hot spots in the clean tech space, which include net-zero energy green buildings, advanced waste heat technologies for combined heat and power and several other technologies.