ExGroup consists of Hellenic Energy Exchange S.A. (HEnEx S.A.) and Enεx Clearing House S.A. (EnExClear S.A.).

HEnEx S.A. was founded on 18.6.2018 and has been designated by the Greek Regulator (Regulatory Authority for Energy-RAE) as Nominated Electricity Market Operator (NEMO) for the operation of the Day-Ahead and Intraday Electricity Markets.

Since 16.3.2020, following the approval of the Hellenic Capital Market Commission (HCMC), HEnEx S.A is operating also the Energy Financial Market, as Market Operator of the Energy Derivatives Market.

EnExClear S.A., a subsidiary of HEnEx founded on 02.11.2018, is responsible for the clearing and settlement of transactions concluded in the Day-Ahead and Intraday Markets, for the transactions on the HEnEx's Natural Gas Trading Platform as well as the clearing and settlement of positions in the Balancing Market.