The green economic transition is forcing a paradigm shift in many areas. Competition law and policy are no exception. The open lecture by Prof. Jurgita Malinauskaite (Brunel University London) provided a good opportunity to reflect on this topic. Prof Malinauskaite is an eminent specialist in competition law and energy law. Her lecture entitledCompetition Law and Sustainability in the EU: Modelling the Perspectives of National Competition Authorities was be based on a cross-cutting article published in January 2023 and provided an understanding of the challenges facing the application of competition law in times of transition in EU Member States, including Poland.