Judgment_paragraph 54 · Sdruzhenie 'Za Zemyata – dostap do pravosadie' and Others v Izpalnitelen director na Izpalnitelna agentsia po okolna sreda and 'TETS Maritsa iztok 2' EAD (C-375/21)

54In those circumstances, the granting of a derogation under Article 15(4) of Directive 2010/75 requires a comprehensive assessment taking account of all sources of pollutants and their cumulative effect, in order to ensure that even if a derogation is granted for one of the sources, the sum total of their emissions does not cause any exceedance of the air quality limit values as defined by Directive 2008/50.