• Those technologies that are considered clean as defined in Article 3, section XXII of the LIE, namely:
    • Wind;
    • Solar radiation, in all its forms;
    • The oceanic energy in its different forms, tidal wave, tidal wave, of the waves, of the sea currents and of the salt concentration gradient;
    • The heat of the geothermal deposits;
    • The bioenergetics determined by the Law of Promotion and Development of Bioenergetics;
    • The energy generated by the use of the calorific value of methane and other associated gases at waste disposal sites, livestock farms and in wastewater treatment plants, among others;
    • The energy generated by the use of hydrogen through combustion or use in fuel cells, provided that the minimum efficiency established by the CRE and the emission criteria established by the Ministry of Environment and Natural Resources in its cycle is met of life;
    • The energy coming from hydroelectric plants;
    • Nuclear power;
    • The energy generated with the products of the processing of agricultural shells or urban solid waste (such as gasification or molecular plasma), when said processing does not generate dioxins and furans or other emissions that may affect health or the environment and comply with official standards Mexicans issued by the Ministry of Environment and Natural Resources;
    • The energy generated by efficient cogeneration plants in terms of the efficiency criteria issued by the CRE and emissions established by the Ministry of Environment and Natural Resources;
    • The energy generated by sugar mills that meet the criteria of efficiency established by the CRE and emissions established by the Ministry of Environment and Natural Resources;
    • The energy generated by thermal power plants with processes of capture and geological storage or biosectraction of carbon dioxide that have an efficiency equal to or greater in terms of kWh-generated per ton of equivalent carbon dioxide emitted to the atmosphere at the minimum efficiency established by the CRE and the emission criteria established by the Ministry of Environment and Natural Resources;
      • Technologies considered low carbon emissions according to international standards, and
    • Other technologies determined by the Secretariat and the Ministry of Environment and Natural Resources, based on parameters and standards of energy and water efficiency, emissions into the atmosphere and waste generation, directly, indirectly or in a life cycle;
  • For its part, the Energy Transition Law (LTE) in its Tenth Sixth Transitory indicates that, for purposes of the definition of Clean Energies, the following will be observed:
    • As long as no provisions are issued that determine maximum emission or waste thresholds for that purpose, only those energy sources and generation processes that, under the terms of section XXII of article 3 of the Electricity Industry Law, will be considered Clean Energy , do not require the definition of criteria, standards or minimum efficiencies, or those whose efficiency criteria have been previously determined by regulatory provisions;
    • The Ministry of Environment and Natural Resources and the Energy Regulatory Commission, within the scope of their powers, shall issue the provisions referred to in the preceding section within 365 days of the promulgation of this Law. ;
    • The minimum efficiency for the use of hydrogen to be considered a Clean Energy shall not be less than 70% of the lower calorific value of the fuels used in the production of said hydrogen;
    • In the case of cogeneration, only clean energy will be considered to be the net generation of electricity above the minimum required for the plant to qualify as efficient cogeneration in terms of the regulation issued by the CRE. Electricity generation through combined cycles cannot be considered as efficient cogeneration;
    • The minimum efficiency for the processes of capture and geological storage or bio-sampling of carbon dioxide to be considered Clean Energies shall be based on an emission rate not exceeding 100 kg / MWh, and
    • The minimum efficiency for any other technology to be considered low carbon emissions according to international standards, or for the Ministry of Energy and the Ministry of Environment and Natural Resources to determine that they are Clean Energies, will be based on a rate of emissions not exceeding 100 kg / MWh.

Source: https://www.gob.mx/cre/articulos/preguntas-frecuentes-sobre-los-certificados-de-energias-limpias