Any company with an energy activity licensed by the Energy Regulatory Authority as well as self-supplied consumers are eligible to become Trading Members in the HEnEx’s Energy Markets, according to the terms of the HEnEx’s Trading Regulations.

EnExClear, an EnExGroup company, provides Central Counterparty clearing services for the Energy Markets of the HEnEx. Each candidate Trading Member must activate as a Direct Clearing Member or cooperate with an EnExClear’ General Clearing Member in accordance with the terms of the EnExClear’s Clearing Regulations.

Have a look at the companies already registered and trading on the HEnEx’s Energy Markets in the EnExGroup Members Table.

If you are interested in becoming a Trading Member, please contact for information regarding the terms of participation in the Energy Markets in the HEnEx’s Energy Markets.

Admission Process


Companies wishing to trade in the HEnEx’s Energy Markets are admitted as Trading Members. The Admission Process per market is described in the following presentations:

   Electricity Markets_Onboarding Process

   Gas Trading Market_Onboarding Process

See more about the membership acquisition process, membership resignation and other membership issues in HEnEx’s Energy Market here.

Submit the necessary forms for registration as listed below and contact the EnExGroup Member Admission Service ( for any questions.



Submit your application.

Fill-in the Candidate Membership, Joint Statement and KYC forms

Form TITLE mandatory file


Candidate Membership Form



Joint Statement



KYC Form


G2-1 Liquidity Provider Application Form - Gas No

Detailed information on REMIT, can be found here.

Pay the prescribed initial and annual subscription fees. Trading Members applicable fees can be found here.


Traders Certification

Be certified as an Energy Trader.

Each Member, depending on its needs, must have a sufficient number of Certified Traders. Apply for the Energy Trading Certificate and follow the Certification Program.

Form TITLE mandatory file


Application for the Energy Trader Certificate 


Detailed information on Members’ professional competence in the Energy Markets, can be found here.



Connect to HEnEx’s Energy Markets.

Submit all relevant information about the persons representing your company, request the creation of users in the HEnEx’s trading systems (only for certified traders) and activate your Trading Account.

Form TITLE mandatory file


Membership Activation  Form



Member's Contacts Form



Connection to the Trading Systems Form



G1-7 ALGO Declaration - Gas No

Active Members – Amendments


1. Trading Members must promptly notify HEnEx as to any amendment to their status on the basis of which HEnEx granted its approval for the acquisition of the Trading Member capacity.

Fill-in the Member’s Detail Change form and provide the necessary documents as appropriate.

Form TITLE mandatory file


Member’s Detail Change


2. Trading Members operating as Non-Clearing Members and cooperate with a General Clearing Member (GCM) of EnExClear may request a change of GCM for the clearing of their transactions.

Fill-in the Amendment of Clearing Assignment form and contact with EnExGroup Admission Service ( to be informed about this process.

Form TITLE mandatory file


Amendment of Clearing Assignment


Admission _Contact

EnExGroup Admission Service

E-mail :
Tel : (+30) 210 33 66 548