Abstract By focusing on the natural gas sector and infrastructural policy in the Visegrad countries this article aims to reassess the EU's role in energy security governance. It argues that the EU can be conceptualised as a catalytic state rather than a regulatory state. It develops the notion of Catalytic Power Europe to highlight the specific type of power that the EU (as a catalytic state) can deploy to achieve its objectives. Catalytic Power Europe differs from existing conceptions of Regulatory and Market Power Europe. It relies on nodality and treasury rather than authority and on mechanism of connectivity and mobilisation rather than enforcement. It highlights the role of the European Commission as a facilitator and coalition builder rather than a regulator and market builder as in the regulatory state perspective. This role is illustrated by analysing the major gas interconnector projects and liquefied natural gas importing terminal that are under development in the V4 and that can affect their energy security. Catalytic Power Europe influences the V4 inter-group dynamics reducing the scope for uncoordinated and unilateral strategies. In this way, it also affects the prospect of EU-Russia energy relations undermining Moscow's divide et impera strategies in the region.