The goals and progress of the European Union (EU) in the field of climate neutrality create opportunities for wider use of distributed generation and the involvement of new market participants in the electricity market. For example, power grid system operators are already creating their operational structure by including and taking into account such stakeholders as passive and active users, energy communities, microgrids, aggregators, virtual power plants, platforms for balancing energy and other flexibility products for auxiliary services, electricity accumulators, etc. involved sides. Modeling not only energy, but also data flows between these parties, emphasizing the importance of new technologies (IoT, self-healing, etc.).