The interested party that wishes to register with the Balancing Service Providers Registry and/or the Balance Responsible Parties Registry shall submit the following to the HETS Operator:

a) A registration application whereby it declares that it expressly and unconditionally accepts this Rulebook, the HETS Grid Code and the Methodologies, parameters, special approvals, Technical Decisions and Manuals issued in accordance thereof, as amended and in force each time, and that it is obliged to comply with their content, including the fulfillment of their cash obligations deriving therefrom,

b) A solemn declaration by the interested party or its legal representative, indicating the documents attached to the Registration Application.

c) Documents evidencing the legal incorporation and operation of the interested party, and the legal representation of the applicant by the person signing the application and the above declarations.

d) Certificate from the Clearing House confirming that a Clearing Account has been created for the Participant as a Direct Clearing Member, or that a Clearing Account has been created for the Participant by a General Clearing Member, or Guarantees, in accordance with Article 25.5 in the event that no Clearing House operates in the Balancing Market, for any reason whatsoever,

e) Guarantees in accordance with the HETS Grid Code.

f) Generating Licence, or RES Generation Certificate, or a Supply Licence, Trading Licence, or Aggregator’s Licence, depending on the capacity in which the interested party is acting. If the interested party acts in many Capacities, it should adduce an appropriate license for each capacity.

g) For RES Producers, a copy of the Differential State Aid Support Contract or a certificate from the Renewable Energy Sources Operator and Guarantees of Origin (DAPEEP) regarding the operational status of RES and HECHP Units covered by the provisions of Article 3(19) of Law 4414/2016.

The HETS Operator shall register the applicant with the HETS Operator Registry within fifteen (15) business days from the day of submission of a complete application. Upon registration, the HETS Operator shall issue a relevant certificate to the interested party. A copy of the certificate shall be forwarded to the RAEWW, the Distribution Network Operator, the Clearing House and the Energy Exchange.

Details regarding the registration with the Balancing Service Providers Registry and the Balance Responsible Parties Registry are specified in the Technical Decision "Procedures for Registration with the HETS Operator Registry".