The development of the energy sector is an essential precondition for sustainable growth of the national economy, therefore the national energy policy is directed not only to the promotion of competition and efficient use of energy resources, but also to increased security of power supply. Due to the fact that faulty operation of electrical equipment and construction or maintenance of low quality dangerous electrical equipment may cause serious risks, there is a need for professional qualification certificate stating the person’s competence in the sphere. However, not always the certificate issued by a certification body confirms the person’s compliance with the professional competence requirements laid down in the industry, whereas it protects the employee from the consequences that may result from incompetent professional performance. The study aims to analyse the certification process of energy constructors and evaluate the compliance of competence assessment and implementation of supervision of the constructors’ independent practice with the requirements laid down in the sphere of energy in order to develop possible solutions for the improvement of the certification process of energy constructors.