Concerning the FEu, it contributes only for the 54.8% of the total. The assumption of working at the 30% of the maximum equipment power is therefore significantly relevant for the calculation of the absolute impact values. In case of CChl, for instance, enhancing the power consumption to 50% of the maximum, translates into an enhanced impact value from 29.3 kg to 47.6 kg of CO2 eq. However, this assumption does not significantly affect the contribution evaluation, since the electricity remains the main contributor of the process.