Biomass

Definition

Biomass. The total mass of living biological material in a given ecosystem at a given time (Levin, 2009).

The term is typically used more narrowly, as the Manufacture of Biomass, Biogas or Biofuels, see, e.g. NACE Class 35.21 - Manufacture of gas

In energy generation context, any material or fuel produced by biological processes of living organisms, including organic non-fossil material of biological origin (e.g., plant material), biofuels (e.g., liquid fuels produced from biomass feedstocks), biogenic gas (e.g., landfill gas), and biogenic waste (e.g., municipal solid waste from biogenic sources).