7. The Commission may adopt implementing acts to establish the detailed criteria for acceptance, including the definition of system boundaries and certification requirements, to be considered as fulfilling the general requirements for zero-emission technologies provided for in Annex III, including its future updates.
For the list of existing technologies provided for in Annex III, those implementing acts shall be adopted by 30 June 2024, where applicable. For any new technologies, those implementing acts shall be adopted, where other technologies as referred to in Annex III become available, without undue delay.
Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 29(3).