This Section presents:

a) the obligations of the HETS Operator in the framework of the Balancing Energy Market,

b) the obligations of the Balancing Service Providers in the framework of the Balancing Energy Market,

c) The transmission of data between the Integrated Scheduling Process and the Energy Balancing Market,

d) the conditions and the procedure for the submission of Balancing Energy Offers by the Balancing Service Providers for the Balancing Service Entities,

e) details regarding input data, the optimization model, the clearing methodology, and the Balancing Energy Market results, and

f) the Dispatch Instructions issued for each of the Balancing Service Providers, and

g) the procedures required in the context of participation by the HETS Operator in the European Platforms provided for in Regulation (EU) 2017/2195.

1. The Balancing Energy Market includes the mFRR Process and the aFRR Process. mFRR Process means those processes that are carried out locally by the HETS Operator to activate mFRR Balancing Energy Offers. aFRR Process means those processes that are carried out within the framework of the European aFRR Platform and in the framework of the Automatic Regulation of Production by the HETS Operator to activate aFRR Balancing Energy Offers.

2. In the Balancing Energy Market, the following products are used:

   a) The upward and downward Balancing Energy (mFRR) activated through the mFRR Process for each mFRR Unit of Time.

   b) The upward and downward Balancing Energy (aFRR) activated through the aFRR Process for each aFRR Process execution cycle.

3. The Balancing Service Providers submit Balancing Energy Offers (mFRR and aFRR) by Bidding Zone, that is, Balancing Energy Offers corresponding to activation of mFRR and aFRR. Balancing Energy Offers (aFRR) are converted into aFRR Standard Products by the HETS Operator.

4. The HETS Operator participates in the European Automatic Frequency Restoration Reserve (aFRR) Platform for the exchange of Balancing Energy from aFRR Standard Products. Balancing Energy exchange means activation of aFRR Balancing Energy Offers for the supply of Balancing Energy from Balancing Service Providers in a scheduling area other than the scheduling area of the HETS Operator.

5. The European aFRR Platform operates using a Balancing Energy exchange model that incorporates a Common Merit Order List (CMOL). The Common Merit Order List refers to the common list of all aFRR Balancing Energy Offers from the aFRR Standard Products of all the TSOs participating in the European aFRR Platform, ranked according to their offer prices, which is used for the purpose of activating those offers.

6. The mFRR Process is carried out periodically. The mFRR Process execution cycle takes place during an mFRR Time Unit, which is a period of 15 minutes, commencing as of 01:00 EET on the Dispatch Day. mFRR Time Units are sequential and do not overlap.

7. The aFRR Process is carried out periodically. The execution cycle of the European aFRR Platform is referred to as the aFRR optimisation cycle. The Automatic Generation Control execution cycle is referred to as the AGC cycle.

8. The mFRR Process adopts, without modification or review, the binding results of the ISP for each Balancing Service Entity unless the Entity in question is subject to a forced interruption arising from submission of a Partial or Total Non-Availability Declaration, or a Major Outage Declaration. In that case, the Balancing Service Entity shall be considered unavailable and the ISP may be executed again.

9. The Balancing Capacity for FCR, automatic FRR, and manual FRR, determined in the ISP, as per Article 13.2 of this Rulebook, shall remain in effect during all Dispatch Periods of the Dispatch Day. In case that a Balancing Service Entity is not available due to a failure, the ISP may be executed again in order to award a Balancing Capacity for the FCR, automatic FRR and manual FRR that are actually available.

1. The HETS Operator:

   a) shall collect, in real time, the telemetered electricity generation/consumption values of the Balancing Service Entities,

   b) shall realise very short-term zonal Load Forecasts for mFRR Time Units in each mFRR Process that is executed,

   c) shall realise very short-term zonal Forecasts for RES Units for mFRR Time Units in each mFRR Process that is executed,

   d) shall receive any updated Balancing Energy Offers and the non-Availability Declarations of the Participants,

   e) shall operate the Use Declaration Submission System of the HETS Operator,

   f) shall calculate the zonal Imbalances to be covered by activating Balancing Energy Offers,

   g) shall calculate the remaining available flows of the inter-zonal corridors for the execution of mFRR and aFRR Processes;

   h) shall execute mFRR and aFRR Processes;

   i) shall create an aFRR Local Merit Order List (LMOL), on the basis of the aFRR Balancing Energy Offers submitted by the Balancing Service Providers;

   j) shall calculate the upward or downward aFRR requirements of the HETS for each AGC cycle;

   k) shall issue and send out Dispatch Instructions to Balancing Service Entities;

   l) shall monitor the compliance of Balancing Service Entities with Dispatch Instructions,

   m) shall manage and use the Dispatch Information Administration System, and

   n) shall submit information to the Transparency Platform of the European Network of Transmission System Operators for Electricity (ENTSO-e) and the Agency for the Cooperation of Energy Regulators (ACER).

2. The HETS Operator is obliged to maintain a complete database on the dispatch process, including:

   a) an ISP Schedule record,

   b)a Dispatch Instructions record,

   c) a proof of delivery record for the Dispatch Instructions.

3. The information contained in the above records shall be kept by the HETS Operator for at least five (5) years from their entry. Upon a reasoned request, the Balancing Service Providers shall have the right to access the above information for their Balancing Service Entities as well as for other Balancing Service Entities only in the context of dispute settlement in accordance with the procedure set out in the HETS Grid Code.

1. The HETS Operator shall issue Dispatch Instructions to the Dispatchable Generating Units whereby it shall determine the Active Power generation, their synchronization or de-synchronization with the HETS, the provision of Reserves and other Ancillary Services and, in general, their mode of operation. The HETS Operator shall issue Dispatch Instructions to the other Balancing Service Entities whereby it shall determine the injection or offtake of Active Power, the provision of Reserves and other Ancillary Services and, in general, their mode of operation.

2. In particular, the Dispatch Instructions issued by the HETS Operator in the framework of the Balancing Market, shall be as follows:

   a) Commitment Dispatch Instructions (i.e. synchronization Dispatch Instructions for the Dispatchable Generating Units) or decommitment (i.e. de-synchronization Dispatch Instructions for the Dispatchable Generating Units) or transition (i.e. transition Dispatch Instructions between operating configurations for Multishaft Combined Cycle Dispatchable Generating Units) in the framework of the ISP.

   b) mFRR Dispatch Instructions

   c) aFRR Dispatch Instructions;

   d) mFRR Test Dispatch Instructions.

3. In addition to the above Dispatch Instructions, the HETS Operator shall issue other instructions for the activation of Balancing Energy Offers for mFRR for purposes other than balancing, in order to ensure reliable operation of the HETS, in particular with regard to frequency, voltage, and current of the HETS at important nodes or component parts. The Balancing Energy Offers for mFRR that are activated for purposes other than balancing shall be marked with the appropriate indications.

4. The Dispatch Instructions shall be issued by the HETS Operator to the Balancing Service Entities through the Dispatch information Administration System, or by alternative means of communication, such as telephone and e-mail.

5. In case of interruption or failure of the Dispatch information Administration System, which makes the issuing of Dispatch Instructions impossible, alternative ways of communication, such as telephone, e-mail and fax, shall be used.

6. Without prejudice to the specifications of the following paragraphs, Dispatch Instructions shall be mandatory for the Balancing Service Providers. The Balancing Service Providers shall ensure that the operational mode of their Balancing Service Entities complies with the Dispatch Instructions and that they change their operation only upon a new Dispatch Instruction. In case of non-compliance, the Balancing Service Providers shall be subject to non-Compliance Charges, in accordance with Article 22.3 and Article 22.4 of this Rulebook.

7. When Compliance with a Dispatch Instruction is impossible due to constraints on the operation of a Balancing Service Entity, which constraints are included in the Balancing Service Entity’s Declared Characteristics, then the respective Balancing Service Provider shall immediately notify the HETS Operator both by telephone and e-mail or fax. In that case, the HETS Operator may withdraw the original Dispatch Instruction and issue a new one.

8. When Compliance with a Dispatch Instruction is impossible for reasons solely attributable to the security of the personnel or the facilities of a Balancing Service Entity, then the respective Balancing Service Provider shall immediately notify the HETS Operator. In that case, the HETS Operator may issue a new Dispatch Instruction taking into account the updated Characteristics of the respective Balancing Service Entity.

9. Balancing Service Providers shall be considered to have complied with the Dispatch Instructions for the synchronization or de-commitment of their Balancing Service Entities, if they execute them with a variance of no more than ten (10) minutes from the time specified in the instructions, as described in the Technical Decision ‘Dispatch Instructions’.

10. Balancing Service Entities selected to provide aFRR Balancing Energy shall comply with the activation profile of aFRR Standard Products. The permitted activation profile shall take into account the characteristics of the aFRR Standard Products and a tolerance range as specified in the Technical Decision ‘Dispatch Instructions’.

11. The HETS Operator may perform checks on Balancing Service Entities to establish compliance with the permitted activation profile. If any discrepancy is found, the HETS Operator shall impose Non-Compliance Charges in accordance with Article 22.2.

1. Participation in the mFRR Process is mandatory for all Dispatchable Generating Units having that obligation, in accordance with the HETS Grid Code, for all their Available Capacity, regardless of the mFRR Balancing Capacity awarded in the ISPs.

2. Participation in the aFRR Process is optional for Dispatchable RES Units Portfolios and Dispatchable Load Portfolios, with the exception of capacity volumes corresponding to the aFRR Balancing Capacity awarded in the ISPs, for which participation is mandatory.

3. Participation in the aFRR Process is mandatory for all Dispatchable Generating Units having that obligation, in accordance with the HETS Grid Code, regardless of the aFRR Balancing Capacity awarded in the ISPs.

4. Participation in the aFRR Process is optional for Dispatchable RES Units Portfolios and Dispatchable Load Portfolios, except for the capacity volume corresponding to the aFRR Balancing Capacity awarded to them in the ISPs, for which participation is mandatory.

5. Participation in the mFRR Process shall confer the following obligations on the Balancing Service Providers:

   a) the submission of Total or Partial non-Availability Declarations and Major Outage Declarations, immediately after the occurrence of events affecting their availability,

   b) submission of upward mFRR Balancing Energy Offers on behalf of the Balancing Services Entities they represent,

   c) submission of downward mFRR Balancing Energy Offers on behalf of the Balancing Services Entities they represent,

   d) availability for operation according to their Declared Characteristics, and

   e)compliance with the Dispatch Instructions issued by the HETS Operator.

6. Participation in the aFRR Process shall confer the following obligations on the Balancing Service Providers:

   a) the submission of Total or Partial non-Availability Declarations, immediately after the occurrence of an event affecting their availability;

   b) submission of upward aFRR Balancing Energy Offers on behalf of the Balancing Services Entities they represent,

   c) submission of downward aFRR Balancing Energy Offers on behalf of the Balancing Services Entities they represent,

   d) availability for operation according to their Declared Characteristics, and

   e) compliance with the Dispatch Instructions issued by the HETS Operator.

7. Balancing Service Providers shall not be obliged to submit upward or downward mFRR and aFRR Balancing Energy Offers for the Balancing Service Entities they represent, and for which they have a corresponding obligation in accordance with paragraphs 1 to 4 of this Article, only in the following cases:

   a) for the period during which the Balancing Service Entity is in scheduled maintenance, in accordance with the HETS Grid Code, and

   b) for the period of validity of the corresponding Total non-Availability Declaration or the Major Outage Declaration of the Balancing Service Entity.