There is a benefit from a reduced need for marginally produced energy, but as this energy in the not-so-far future is based on renewables, there is not a corresponding benefit from avoided use of fossil carbon. This value is used in the calculation of the basic scenarios and in order to examine the importance of the substitution factor, a sensitivity analysis using 0.66 and 0.33 as factors has been conducted. It has been chosen to include the reference scenario (incineration) as well as the chemical recycling scenario in the calculations, thereby creating a better overview of the potential impacts and benefits from treatment of discarded polyester textiles in the Nordic countries, see Figure 32. This finding applies to all impact categories examined in the study, and it is also valid for reuse in the ROW. Even a low substitution factor of 0.33 provides significantly more benefits than incineration and recycling. The finding, however, is not consistent in all impact categories as is evident from Table 10.