This Decree of the Ministry of Environment establishes groups and methods of use of biomass, in the context of the promotion of the use of renewable sources of energy. The Decree establishes biomass parameters indicating different groups of biomass and different types of electricity production. The Decree is composed of the following Sections: (1) Scope of the Decree; (2) Definitions; (3) Groups of biomass to be promoted; (4) Biomass parameters indicating varied types of promotion; (5) Ways of u