Reporting that Bloom Boxes do not produce carbon emissions is misleading. The Bloom Box is carbon free/neutral only if its fuel source is carbon free/neutral. When a Bloom Box is fed natural gas (and most of the Bloom Boxes currently deployed consume this fossil fuel) it emits just as much carbon dioxide per unit of gas as a gas turbine. Mind you, that means less carbon dioxide per unit of power generated because a Bloom Box is more efficient than a gas turbine.
Terrific technology and a potential game changer, but don't oversell the carbon dividend.