The 1st International Seminar “Decarbonization of the Electric Power Industry in Global Issues of International RES and Balancing” is a new event dedicated to current aspects of the development of renewable energy sources (RES) and their promotion in modern energy systems. The main goal of the conference is to exchange experiences and practices in the field of forecasting renewable energy sources, balancing energy systems, managing the demand for electricity and the application of the latest technologies, such as hydrogen technologies and energy storage systems (ESS).