The transition to sustainable energy solutions is imperative in escalating global energy demands and the adverse environmental impacts associated with fossil energy sources. As a carbon–neutral resource, biomass presents as an alternative, particularly effective in mitigating CO2 emissions and exploiting renewable energy opportunities in forest regions. This study presents the starting point for developing a new off-grid power module designed explicitly for forest management and maintenance applications, with the primary objective of using the forest residues directly in the forest to power the forestry machines. This paper presents a technological analysis of three different configurations of Rankine cycles: a water/steam cycle, an organic cycle, and an organic cycle with direct vaporization. The most suitable configuration for this specific application was identified through the development of physical models. The preliminary results obtained from the models indicate that the water/steam Rankine cycle is the most suitable configuration to integrate the off-grid power module.