CEER (Council of European Energy Regulators) is a forum for energy Cooperation in Europa. There are 30 member states in CEER, EU28 and the EEA countries, Iceland og Norway. Through CEER,  the national regulators cooperate and exchange best practice. 

The overall aim of the Council of European Energy Regulators (CEER) is to facilitate the creation of a single, competitive, efficient and sustainable internal market for gas and electricity in Europe. The CEER acts as a platform for cooperation, information exchange and assistance between Europe's national energy regulators and is their interface at EU and international level. On EU issues, CEER works very closely with (and supports) the Agency for the Cooperation of Energy Regulators (ACER), an EU Agency formed for the cooperation of energy regulators.