The Balancing Market Rulebook is adopted in line with the provisions of Articles 17 and 18 of Law 4425/2016.

The aim of the Balancing Market Rulebook is to define the terms and conditions for the operation of the Balancing Market and in particular to:

a) designate the Participants in the Balancing Market and describe the relevant registration procedure.

b) set out detailed rules and conditions under which Participants may participate in the Balancing Market, including their rights and obligations, and determine the procedures that shall apply to the settlement of disputes between the Participants and the HETS Operator,

c) define the rights and obligations of the HETS Operator vis-à-vis the Participants in connection to their participation in the Balancing Market,

d) describe the interface between the Balancing Market, the Day-Ahead Market and the Intra-Day Market, including the exchange of information between the Energy Exchange and the HETS Operator,

e) set out detailed rules for the validation of Balancing Energy Offers and Balancing Capacity Offers by the HETS Operator,

f) describe the input data, the operation, and the results of the Integrated Scheduling Process,

g) describe the interface between the Integrated Scheduling Process and the Energy Balancing Market,

h) describe the input data, the operation and the results of the Energy Balancing Market,

i) define the accounts kept by the HETS Operator for the purposes of the Balancing Market Settlement,

j) determine the penalties for the Participants in the event of non-compliance with the provisions of this Rulebook,

k) define the Balancing Market Settlement procedure,

l) define the procedure for exchanging information with other stakeholders,

m) specify the reporting and monitoring obligations of the HETS Operator in relation to the Balancing Market, and

n) define the procedures for the protection of commercially sensitive information.

Unless otherwise defined, all capitalized terms used in this Rulebook shall have the meaning specified in Article 1.3 of this Rulebook. Unless otherwise defined, all capitalized terms used in this Rulebook shall have the meaning specified here ANNEX III in this Rulebook. Unless special reference is made, any reference to an Article, CHAPTER and ANNEX shall refer to the Articles, CHAPTERS and ANNEXES of this Rulebook.

This Rulebook may be amended subsequent to a proposal from the HETS Operator, duly approved by the Regulatory Authority for Energy, Waste and Water (RAEWW), following public consultation conducted by the Authority which shall be published in the Government Gazette in accordance with the provisions of Article 17 (2)(p) of Law 4425/2016. The amendment process may also be instigated at the initiative of the RAEWW. The new text of the Rulebook, as amended each time, shall be published in a consolidated version on the website of the HETS Operator. The body of the consolidated text shall indicate the amendments, the conditions of validity thereof and any other point that facilitates public information. This codification is informal and shall under no circumstances supersede texts approved by RAE and published in the Government Gazette as indicated above.

Any amendment to this Rulebook shall automatically govern the applicable Balancing Service Contract concluded between the HETS Operator and the registered Balancing Service Provider, and the applicable Balance Responsible Party Contract concluded between the HETS Operator and the registered Balance Responsible Party, without the need for the registered Balancing Service Provider / the Balance Responsible Party to take any action and without prejudice to the right of the registered Balancing Service Provider or the registered Balance Responsible Party to request the termination of the Balancing Service Contract or the Balance Responsible Party Contract, as stipulated in Article 4.4 of this Rulebook.

The Balancing Market Rulebook may be supplemented by methodologies, parameters and other special approvals as foreseen therein as may be decided by the Regulatory Authority for Energy Waste and Water (RAEWW) subsequent to a proposal from the HETS Operator and duly published in the Government Gazette in accordance with Article 18(4) of Law 4425/2016.

In view of the effective implementation of the provisions of the Balancing Market Regulation, the HETS Operator may issue Technical Decisions which regulate details in technical issues with non-regulatory content. The Technical Decisions shall be issued following public consultation and shall be posted on the website of the HETS Operator. The HETS Operator shall send drafts of the Technical Decisions to the RAEWW for submission for public consultation together with the approved Technical Decisions. In the event of any contradiction between the provisions of this Rulebook and the corresponding Technical Decisions, the provisions of this Rulebook shall prevail.

Technical Decisions shall be amended by decision of the HETS Operator either on its own initiative, or at the request of the RAEWW or third parties with a legitimate interest, pursuant to the procedure of the preceding paragraph.

The Participants shall be liable to the HETS Operator for the timely and full performance of their obligations under this Rulebook and for the completeness and accuracy of the information and data submitted to the HETS Operator. This liability includes any act or omission of their representative bodies, their servants, their agents and, in particular, of the persons they use for the performance of their obligations under this Rulebook.

The HETS Operator shall not be liable to the Participants for the performance of the actions set out in this Rulebook, unless it has acted with malice or gross negligence. The HETS Operator shall take appropriate measures to prevent operational problems in the systems it manages and shall strive to restore faults or malfunctions as quickly as possible.