The chapter seeks to unravel the nexus between the EU’s CFSP and energy policy. In doing so, it examines the externalization and securitization of the EU’s internal energy market and argues that the development of the EU’s energy security policy has become an important variable in ensuring EU wider foreign policy objectives. Rather than addressing the CFSP liaisons with EU energy policy solely from the perspective of foreign policy objectives, the chapter also explores the securitization of energy policy from the perspective of the internal market. It argues that there is a strong link between securitization and competitiveness. It also explores the EU’s capacity to externalize its internal market policies both inside and outside the contours of CFSP by providing an overview of the existing CFSP framework and insight on the extraterritorial application and force of EU competition law to achieve CFSP objectives.