The perspective through which competition law in the European Union is perceived has been changing over the recent several years. The leitmotif of this trend is grouped with the ongoing debate on the goals that competition law may encompass and serve. One of its facets pertains to sustainability. However, it elicits two further doubts. The first regards the meaning of sustainability. To target sustainability values, rules and policies, prior identification of its scope is unquestionably inevitable. To this end, multiple publications1 were delivered and, as it constitutes a separate subject of research, in principle it will not be discussed in this paper. However, the other signalled doubt has to be addressed here – how can sustainability goals (technically) be achieved with or through competition law? Obviously the exhaustive answer would need to be (excessively) extensive in length. Thus, touching upon a piece thereof, this paper will focus on National Competition Authorities (hereinafter: ‘NCAs’) and their capability to join ‘the quest for sustainability’.