What can Biogas be used for?
Biogas is best used directly for cooking/heating. It can also be used to run gas lamps and absorption refridgeration. As electricity generation uses about 5 times the energy actually contained in the electricity produced it is one of my last uses for biogas (but it is a bit better if you can also use the waste heat). As methane (the fuel in biogas) is VERY hard to compress (it won’t liquify room temperatures, so you need cylinders like oxygen/nitrogen bottles rather than LPG tanks) it is my lowest preference use, as so much biogas (or equivalent energy from some other form!) must be used to provide some “useful” fuel.
