The destroyed exergy per kg of wet biomass is 35.6 MJ/kg and the lost exergy per biomass during the process is 21.2 MJ/kg. The overall exergetic efficiency was calculated to be 30%, which is significantly lower than previous studies that report efficiencies above 80% for the organosolv process on sugarcane bagasse and oil palm fronds. A breakdown of exergy destruction over all simulated process parts, see Figure , elucidates that the majority of exergy destruction (74.43%) is due to the boiler unit. Methane chemical exergy is destroyed during fuel combustion, generating entropy due to phase changes and high temperature gradients between heat exchanger and boiler feedwater. The approximate magnitude of boiler contribution to exergy destruction is in agreement with the work on lignocellulosic treatment by steam explosion by Previously mentioned works reporting an exergetic efficiency of over 80%, have not included the boiler unit for utilities, which explains large deviations. We emphasize the relevance of the boiler utilities to prevent an inflated exergetic efficiency and reduced exergetic destruction. With regards to the exergy loss, we find that nearly 32% are attributed to E-1, as 180 tons of water per hour are evaporated and lost in this unit. Another 31%, 9% and 2% of exergy loss are due to wasted solvent and wasted water in WASH-1, WASH-2 and WASH-3. However, there is a potential to address the above through better process integration, e.g. recycling SOLVENT3 to the digester or recycling between WASH-1 and WASH-2. If all waste streams are utilized and considered products, the exergy efficiency of the process can potentially increase to 56%.