Biogas from a tonne of dairy cattle slurry

22 m³2011 data in a 2017 reportsourcedmedium confidence

'A fifth of that for household food waste and grass silage': slurry alone makes little gas, which is why co-digestion with richer feedstocks usually carries the economics.

Ricardo Energy & Environment for ClimateXChange, Farmyard manure, slurry and anaerobic digestion in Scotland (2017)Table 1: dairy cattle slurry, biogas 22 m³ per tonne fresh weight