The organic waste methanization and biogas energy recovery unit is a 100% Brazilian technology implemented in the city of Rio de Janeiro. The system was developed to treat the organic fraction of municipal solid waste (FORSU) and organic waste segregated at the source (e.g., from large generators), converting this material into biogas, thermal and electrical energy, and biosolids for agricultural or energy use.

The plant has the capacity to treat 35 tons of waste per day, in a structure composed of seven tunnels, into which the waste is introduced with the help of a loading shovel. The technology developed is suitable for large and medium-sized cities, and the process of using waste to generate energy is one of the priorities in the current legal framework for sanitation and waste management.