Machine Translated by Google




                                                                  Mexico City, February 28, 2022


                                                       WARNING

                  EMISSION FACTOR OF THE NATIONAL ELECTRICITY SYSTEM 2021


        To all Establishments Subject to Reporting, (ESR), Greenhouse Gas Certification, Validation and
        Verification Bodies, OC-VV-GEI, general public.



        By this means, it is made known to you that the Energy Regulatory Commission has notified this
        Secretariat that the electrical emission factor of the System
        Electrico Nacional for the calculation of indirect greenhouse gas emissions from electricity consumption
        corresponding to the year 2021, is:

                                                 0.423 tCO2e / MWh


        Said factor must be used for purposes of reporting to the National Emissions Registry, taking into
        account that this factor considers the generation of power plants that deliver energy to the national
        electricity grid, in accordance with
        what is stipulated in section XLIV of Article 3 of the Electricity Industry Law.

        CAREFULLY