Digital transformation is an ongoing process that is driven by the recent advances in digitalization as well as the development of information and communication technologies (ICT) that penetrate all socio-economic fields of everyday life and business. In this paper, we describe the digital transformation of energy companies. We show that successful transformation is based on skills, expertise and knowledge of the employees that need to be created and maintained. In addition, we show that digital competences become a key element in building capacities that are required for the digital transformation. This is of a particular importance for the energy companies that are experiencing major changes on the path of transition toward low-carbon economy and renewable energy.