HydrogenCHP

Burning biogas on site to make power and heat is the established path, and for a lot of sites it is the right one. There is a second option that changes the economics entirely: rather than converting the gas to electricity, clean it up until it is indistinguishable from natural gas, and sell it as gas. A biomethane plant does that. It is a fundamentally different business model to cogeneration, and whether it suits depends far more on your commercial position than on your engineering. Biogas and biomethane are not the same thing Worth being precise, because the terms get used interchangeably and they are not. Biogas is what comes out of a digester or a landfill. Methane diluted with carbon dioxide, plus water vapour, hydrogen sulphide and various trace contaminants. Combustible, but nowhere near the specification of pipeline gas. Biomethane , sometimes called renewable natural gas, is biogas that has been upgraded: the carbon dioxide removed, the contaminants stripped, the moisture t...