The development of the energy policy of the European Union (EU) has been accompanied by organizational reforms of the EU’s energy bureaucracy. Much attention has been paid to Commission President Juncker’s reorganization of the European Commission, including how this has influenced the Energy Union initiative. The establishment of EU agencies has also expanded the EU administration and the capacity for developing new initiatives and coordinating implementation of EU legislation. However, recent research has not been sufficiently connected to policy studies on energy, climate and environment. This article analyses the extent to which two EU agencies - the Agency for the Cooperation of Energy Regulators, and the European Environmental Agency - augment the policymaking capacity of the Commission by providing information that aids its work. The article ends with a discussion of the potential implications of agencification.