Abstract. Forest residue mass from timber harvests is a renewable resource that can be used for electrical utility production. Under this context, this work presents the development of a system for harnessing forest residues. The system consists in several different parts, constituting a complex mechanical-hydraulic-electrical coupling system. With the development of this system, forest residues and derivatives can be used through thermoelectric plants to produce electric energy. In this paper, the proposed system, due to its specific structure, supports a wider range of forest residues that can be processed, i.e., mixed residues of different sizes and shapes can be used simultaneously. In addition, this solution may allow to skip preprocessing fragmentation.