A transmission system or transport network operator provides the transport of energy in the form of natural gas or electricity. The role of the transmission system operator in the wholesale electricity market is to manage real-time electricity grid safety as well as coordinate supply and demand for electricity in a way that prevents frequency fluctuations or supply disruptions. The transport network operator shall support the functioning of the internal market and the cross-border trade in natural gas and ensure the optimal management, coordinated operation and technical development of the transport networks.

The distribution system operator, resp. the network provides distribution of energy in the form of natural gas or electricity to end customers at consumption points. The distribution network operator ensures the sale of distribution capacity, development activities, operation and maintenance of the gas distribution network.

Suppliers and energy traders are business companies supplying energy products, such as electricity and gas to end-customers ranging from wholesalers to households. They trade commodities on the wholesale market and offer their customers and prospective customers new products and services.

Other entities such as manufacturers, heating plants, water companies, gas storage facilities and others operate on the utility market. Continuous changes in the market and regulatory environment as well as competitive and regulatory cost-cutting pressures force them to look for new, effective ways to ensure the operation of their IT solutions.