The contribution analysis highlighted two main variables which significantly affect the SU results: the by-product valorization with AnchoisFert replacing NPK, and the solvent production technology. A sensitivity analysis shows how results are impacted by theses variables. Results in Figure show what happens when in place of producing AnchoiFert organic fertilizer, the solid residue is converted onsite via anaerobic digestion (AD) into biomethane, and the latter gas is integrated with a cogeneration unit (CHP) able to convert the resulted biogas into electricity.