The Austrian implementation of the third energy package has led to the enactment of various constitutional provisions, which can be understood as the development of regulatory constitutional law. The incoherent and inconsistent approach towards a constitutional law for regulatory authorities has created different constitutional challenges, eg regarding the democratic concept of the constitution.Moreover, a shift from administrative authorities towards European-style agencies can be observed in domestic law. This article highlights the findings of a study on regulatory aspects commissioned by the Austrian Chamber of Labour.