In light of the depletion of fossil fuel resources and growing environmental concerns caused by greenhouse gas emissions, the utilization of renewable energy sources, particularly biomass, has garnered increasing attention. This study presents an innovative system for clean energy production using eucalyptus biomass. The proposed system consists of four main components: a gasification reactor, a steam methane reforming reactor, a water-gas shift reactor, and a palladium membrane for hydrogen purification. Thermodynamic modeling and simulation of the system components were conducted using Engineering Equation Solver software, with a particular focus on the effects of process temperature on system performance. The results indicate that increasing the temperature of the gasification reactor from 800 to 1000 K significantly influences the composition of the syngas. The hydrogen content increases from 32.35% to 40.71%, while carbon monoxide content rises from 9.93% to 18.85%. In the steam methane reforming reactor, elevated temperature improves reforming efficiency, reducing the carbon dioxide concentration in the product gas by 4.17%. On the other hand, in the water-gas shift reactor, higher temperature leads to a slight decrease in hydrogen conversion from 61.31% to 60.01%, accompanied by an increase in carbon dioxide content from 10.22% to 12.13%. These findings emphasize the critical role of temperature in directing the equilibrium and reaction kinetics within each subsystem. The hydrogen flux through the palladium membrane shows a substantial enhancement with temperature rise, improving from 0.29 to 1.52 J/m2.s. This reflects the superior performance of palladium membranes at higher temperatures for separating and purifying hydrogen from the gas mixture. The use of eucalyptus biomass as a renewable and widely available feedstock, coupled with advanced hydrogen production and purification technologies, presents a promising approach to addressing energy and environmental challenges. The insights gained from this study highlight the potential for improving overall system efficiency and hydrogen yield through careful thermal management across each reactor unit.