The right to have access to public services is of crucial importance for every citizen. This right also involves the requirement for establishing an effective consumer protection regime both at the national and the EU level. The paper analyses the evolution of consumer protection in this field from the very beginning stage of the European integration until today, with a special focus on secondary legislation of the European Union aiming at liberalization in the telecommunication, postal and energy sectors. We also examine, on the basis of some examples from the electricity and gas sectors, whether the relevant European and national rules are able to grant a real safeguard for consumer interests in any case.