Atmosphere identified the methodologies to apply to Ecopetrol's emission reduction projects in order to obtain carbon credits. For this, the primary information was analyzed, field visits were made to verify the information, the methodologies applicable to the projects were reviewed and the respective capacities were generated to the project leaders for the understanding of the validation and verification process. To this end, an instruction manual was prepared documenting the annual validation process, as well as the project reports for third-party verification.