TYPES

                                                                NATURAL
It is one that includes forests, trees, bushes, plants growing, etc. For example, forestry farms produces a series of waste or by-products, with a high energy, which do not serve for the manufacture of furniture nor paper, such as leaves and small branches, and which may be used as an energy source.

RESIDUAL

Is that which corresponds to residues of straw, sawdust, manure, slaughterhouse waste, urban waste, etc. The use of the residual biomass energy, for example, results in energy from wood waste and agricultural waste (straw, shells, bones...), urban wastes, livestock wastes, as slurry or manure, sludge treatment plant, etc. Agricultural residues can also leverage energy and there are plants of energy recovery of residual straw from fields that is not used for fodder for animals.

DRY BIOMASS AND HUMEDA

segun the proportion of water in substances that form biomass, can also be classified into:

Dry biomass: wood, charcoal, forest residues, remnants of the logging industry and the furniture, etc. Wet biomass: residues from the manufacture of oils, sludge from sewage, slurry, etc. This has much importance with regard to the type of use, and the transformation processes which can be subjected for the purported energy.