SECTION V BALANCING ENERGY MARKET

  • CHAPTER 14 GENERAL PROVISIONS

    • Article 14.1 Scope

      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.

    • Article 14.2 General Provisions

      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.

    • Article 14.3 HETS Operator Responsibilities

      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.

    • Article 14.4 Dispatch Instructions

      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.

    • Article 14.5 Participation of Balancing Service Providers in the Balancing Energy Market

      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.

  • CHAPTER 15 BALANCING ENERGY OFFERS IN THE BALANCING ENERGY MARKET

    • Article 15.1 Submission of Balancing Energy Offers to the Balancing Energy Market

      1. Balancing Energy Offers are submitted by the Balancing Service Providers for each Balancing Service Entity and for each mFRR Time Unit of the Dispatch Day, separately for mFRR and aFRR.

      2. Balancing Energy Offers for mFRR may be submitted, at the latest, until the respective Deadline for Submission of mFRR Offers. The Deadline for Submission of mFRR Offers shall be fifteen (15) minutes before each mFRR Time Period to which the submitted mFRR Balancing Energy Offer applies.

      3. Balancing Energy Offers for aFRR may be submitted, at the latest, until the respective Deadline for Submission of aFRR Offers. The Deadline for Submission of aFRR Offers shall be forty-five (45) minutes before each aFRR Time Period to which the submitted aFRR Balancing Energy Offer applies.

      4. Each Balancing Energy Offer is assigned to a specific mFRR Time Unit during the Dispatch Day. In all other respects, the submission of mFRR and aFRR Balancing Energy Offers, with regard to the terms governing their content and form, shall be in accordance with the provisions laid down in Article 12.2.

      5. For Dispatchable Generating Units and Pumped Storage Dispatchable Hydroelectric Generating Units, the ISP Balancing Energy Offers per Dispatch Period are automatically converted into equivalent 15-minute mFRR and aFRR Energy Market Offers. Each ISP Balancing Energy Offer per Dispatch Period shall be converted into two (2) equivalent 15-minute Balancing Energy Offers for mFRR and aFRR, in the same form and for the same Balancing Energy volumes and prices as those in the original offer. These automatically created Offers shall be deemed as submitted by the Participant and shall produce all the results provided for in this Rulebook, as if the Offers had been submitted by the Participant.

      6. The price of the Balancing Energy Offers for mFRR and aFRR submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Generating Units, including Dispatchable Hydro Generation Units with pumped storage capability, must be an improved price in relation to the ISP Balancing Energy Offer submitted to the ISP for the Dispatch Period which includes the mFRR Time Unit. The term improved price means a lower price for upward Balancing Energy Offers and a higher price for downward Balancing Energy Offers. The price of the Balancing Energy Offers for mFRR and aFRR submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Generating Units, including Dispatchable Hydro Generation Units with pumped storage capability, cannot be changed in relation to the volume of the ISP Balancing Energy Offer submitted to the ISP for the Dispatch Period which includes the mFRR Time Unit.

      7. For the Dispatchable RES Units Portfolios and the Dispatchable Load Portfolios after each ISP, for each Dispatch Period until the end of the Dispatch Day for which there is a corresponding obligation, in accordance with Article 14.5, the ISP Balancing Energy Offers shall be automatically converted into corresponding 15-minute mFRR and aFRR Energy Market Offers and shall replace any other currently valid offers. Each ISP Balancing Energy Offer per Dispatch Period shall be converted into two (2) equivalent 15-minute mFRR and aFRR Energy Market Offers with the same Balancing Energy prices and a volume corresponding to the sum of the volumes of Balancing Energy awarded under the ISP, together with the volume of Balancing Energy corresponding to the Balancing Capacity for mFRR or aFRR supply awarded under the ISP.

      8. The price of mFRR and aFRR Balancing Energy Offers submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Load Portfolios, and Dispatchable RES Units Portfolios must be improved compared to the price of the ISP Balancing Energy Offer for the Dispatch Period that includes the mFRR Unit for volumes of Balancing Energy corresponding to the Balancing Energy awarded under the ISP and for the Balancing Energy volumes corresponding to the Balancing Capacity volume for mFRR or aFRR supply awarded under the ISP. The term improved price means a lower price for upward Balancing Energy Offers and a higher price for downward Balancing Energy Offers. The volumes of mFRR and aFRR Balancing Energy Offers submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Load Portfolios, and Dispatchable RES Units Portfolios may not be reduced for the Dispatch Period that includes the mFRR Time Unit in relation to the sum of the volumes of Balancing Energy awarded under the ISP and the volumes of Balancing Energy corresponding to the Balancing Capacity for the provision of mFRR and aFRR awarded under the ISP.

      9. The energy quantities included in the upward and downward Balancing Energy Offers submitted to the Balancing Energy Market by the Dispatchable Generating Units, including Dispatchable Hydro Generation Units with pumped storage capability, and the Dispatchable RES Units Portfolios shall be deemed to have been injected/absorbed at the meter connection point.

      10. The energy quantities included in the upward and downward Balancing Energy Offers submitted to the Balancing Energy Market by the Dispatchable Load Portfolios shall be considered to be injected/absorbed at the Transmission System-Distribution System Boundary.

      11. Details on the submission of Balancing Energy Offers are provided in the Technical Decisions "Manual FRR " and "Automatic FRR".

    • Article 15.2 Conversion of Balancing Energy Offers into Standardized Automatic Frequency Restoration Reserve (aFRR) Products

      1. The HETS Operator shall carry out the process of converting aFRR Balancing Energy Offers into Standard Products as follows:

        a)    at three scheduled times to take into account the most recent execution of the ISP,
        b)    after the Deadline for the Submission of Offers for aFRR Balancing Energy on the Balancing Energy Market, and
        c)    at any other time deemed necessary by the HETS Operator.

      2. The local aFRR merit order list is created through the Offer conversion process for both upward and downward directions during each mFRR Time Unit of the Dispatch Day, which includes eligible steps of upward and downward aFRR Balancing Energy Offers from the Balancing Service Providers, to whom aFRR Balancing Capacity has been awarded in accordance with the latest ISP resolution, without prejudice to the provisions of paragraph 6 of this Article.
      3. Offers are ranked by price in the local aFRR merit order list. For upward aFRR Offers the ranking is from lowest to highest price, while for the downward aFRR Offers the ranking is from highest to lowest price.
      4. Without prejudice to paragraph 6 of this Article, during execution of the conversion process for aFRR Balancing Energy Offers, the HETS Operator shall take into account the characteristics of aFRR Standard Products and the following information regarding the Entities to which aFRR Balancing Energy has been conferred:
        a)    the steps of upward and downward aFRR Balancing Energy Offers,
        b)    the Balancing Energy awarded for upward and downward aFRR in accordance with the latest resolution of the ISP,
        c)    technical constraints in accordance with Registered Characteristics,
        d)    the Market Schedules,
        e)    the Available Capacity, based on the most recent Non-Availability Declarations submitted.
      5. In carrying out the conversion process of the aFRR Balancing Energy Offers, the HETS Operator shall identify the steps eligible for activation of aFRR Offers as follows:
        a)    The upward aFRR Balancing Energy Offer steps are selected from the Balancing Services Entity’s aFRR Reference Point and for a volume equal to the upward aFRR Balancing Energy granted to the Entity.
        b)    The downward aFRR Balancing Energy Offer steps are selected from the Balancing Services Entity’s aFRR Reference Point and for a volume equal to the downward aFRR Balancing Energy granted to the Entity.
        The aFRR Reference Point means the ISP Schedule and is used to determine the steps of Offers eligible for activation under the aFRR Process.
      6. In exceptional cases where the provision of aFRR Balancing Capacity other than the results of the ISP is required for operational security reasons, the volume and the aFRR Reference Point referred to in paragraph 4 of this Article may be amended. More specifically, the volume may differ from the assigned aFRR Balancing Capacity, and the aFRR Reference Point may differ from the ISP Schedule, taking into account the Registered Characteristics and Availability of the Entity as well as the aFRR needs of the HETS.
      7. Details of the conversion of aFRR Balancing Energy Offers into Standardized Products are described in the Technical Decision ‘Rules for the conversion of Balancing Energy Offers into Standardized Products on the Local Merit Order List.
    • Article 15.3 Revision of the aFRR Local Merit Order Lists by Balancing Service Providers
      1. On completion of the process of converting aFRR Balancing Energy Offers into Standard Product offers, the HETS Operator shall communicate the Local Merit Order List to the Balancing Service Providers.
      2. In the event of an event affecting the activation of one or more eligible steps of the Offers, Balancing Service Providers shall promptly and without undue delay revise their availability on the Local aFRR Merit Order List, and shall submit appropriate justification at the same time. Eligible steps to provide upward aFRR are reviewed in descending order, starting with the step with the highest Balancing Energy Offer price. Eligible steps to provide downward aFRR are reviewed in ascending order, starting with the step with the lowest Balancing Energy Offer price.
    • Article 15.4 Revision of the aFRR Local Merit Order List

      The HETS Operator may revise the local aFRR merit order list for one or more mFRR Time Units due to operational security reasons, concerning the availability and/or the quantity of eligible Offer steps.

  • CHAPTER 16 MANUAL FRR PROCESS

    • Article 16.1 mFRR Process Input Data

      The HETS Operator shall draw up the results of a specific 15-minute solution of the Balancing Energy Market taking into consideration the following input data:

      a) the Market Schedule for each Balancing Service Entity as recorded by the Use Declaration Submission System of the HETS Operator,

      b) the operation schedules of the Dispatchable Generating Units / Dispatchable and non-Dispatchable RES Units Portfolios in Testing Operation, submitted by the respective Producers, through the operation schedule Declarations for units in testing operation,

      c) the operation schedules of the generating units/ non-Dispatchable RES Units Portfolios in Commissioning Operation, submitted by the respective Producers, through the Operation Schedule Declarations for units in Commissioning Operation,

      d) the mandatory generation schedules for Dispatchable hydro Generating Units, as submitted by the respective Producers through the daily mandatory hydro injection declarations,

      e) the Imbalances in the import/export schedules at the interconnections used for the ISP execution, along with actual tripping on interconnections, if any,

      f) the already established flows in the inter-zonal corridors between the Bidding Zones deriving from the Market Schedule of all Entities, in order to calculate the residual flows available in the inter-zonal corridors for the solution of the Balancing Energy Market,

      g) the information on Balancing Service Entities received by the Energy Management System (e.g. unit in or out of operation, SCADA measurements of the production of Dispatchable Generating Units),

      h) the Automatic Generation Control (AGC) status of Balancing Service Entities providing aFRR, which is received by the HETS Operator Energy Management System,

      i) the awarded Balancing Capacity of the Balancing Service Entities for upward and downward FCR, aFRR, and mFRR, as received after execution of the latest ISP,

      j) the mFRR Energy Offers, in accordance with Article 15.1,

      k) the Available Capacity of all Balancing Service Entities, based on the most recently submitted non-Availability Declarations,

      l) the latest updated operation schedule of the Balancing Service Entities that have activated a constraint in the maximum quantity of daily energy injection by their Techno-Economic Declaration,

      m) the Declared Characteristics of the Balancing Service Entities,

      n) the initial level of production/consumption of the Balancing Service Entities before and as close as possible to the start of the mFRR Time Unit of the specific mFRR Process resolution,

      o) the zonal Load Imbalances,

      p) the zonal RES Units Imbalances.

    • Article 16.2 Execution of the Manual FRR Process

      1. The mFRR Process is executed as a mixed integer linear programming model for each mFRR Time Period.

      2. The objective function for resolution of mFRR minimises the cost of covering zonal imbalances for all Bidding Zones using upward and downward mFRR Energy Offers submitted by Balancing Service Entities. The cost of covering HETS zonal imbalances arises from the mFRR Energy Offers that are accepted.

      3. The constraints on mFRR problem resolution shall include at least:

        a) the zonal Imbalance constraint for each Bidding Zone,

        b) the constraints on electricity flows between the Bidding Zones,

        c) the technical constraints of the Balancing Service Entities,

        d) the constraints ensuring that the overall HETS requirements for ISP Balancing Capacity and aFRR are maintained,

        e) any restrictions on mandatory injections, and

        f) any constraints on maximum daily electricity injection from Dispatchable Generating Units.

      4. In the event that the offer prices of two or more Balancing Energy Offers pertaining to the same mFRR Time Unit are identical, and, at the same time, the respective Balancing Energy quantities of the above offers are not included in their entirety in the mFRR Process results resolution, the offer segments shall be selected in the following order of priority: (a) Dispatchable RES Units Portfolio, (b) Dispatchable hydro Generating Units, (c) Dispatchable Load Portfolio, and (d) Dispatchable thermal Generating Units. Among bidding segments that belong to the same category, priority shall be given to the segments of the offers corresponding to the Balancing Service Entity with the highest Ramp Up Rate. For bidding segments that come into the same category and have the same Ramp Up Rate there will be random selection.

      5. In the event that no feasible result is produced for a mFRR Time Unit under the mFRR Process resolution, that is, covering the short-term forecasted imbalances by observing the constraints in paragraph 3 of this Article is unfeasible, the HETS Operator shall repeat the mFRR Process having indicatively undertaken to:

        a) include Balancing Energy Offers from Contracted Generating Units;

        b) relax the constraints indicated in paragraph 3 (4) of this Article in order to reach a feasible solution.

        If, after following the above steps, there is still no feasible solution, the manual FRR process shall be performed once again in accordance with the provisions on Emergency Situations, as defined in the HETS Grid Code.

      6. When resolving the manual FRR Process, mFRR Balancing Energy Offers that may have been submitted by Dispatchable Intermittent RES Units Portfolios or Dispatchable Load Portfolios are not taken into account if they are supplying aFRR during the specific manual FRR Time Unit.

      7. When resolving the mFRR Process, optimisation may be executed for three consecutive 15-minute periods, so that the impact of HETS conditions during the subsequent mFRR Time Units are effectively taken into account for each mFRR Time Unit. In this case, only the results of the first mFRR Time Unit shall be binding. Results related to subsequent mFRR Time Units shall be indicative.

    • Article 16.3 Immediate Activation of manual FRR

      1. Immediate activation of mFRR means activation of mFRR Balancing Energy at a time that does not coincide with the scheduled periodic performances of the mFRR Process in 15-minute cycles.

      2. The HETS Operator is entitled to proceed with an immediate activation of mFRR Balancing Energy and to send Dispatch Instructions to Balancing Service Entities in order to balance the HETS or to address technical constraints at any point in time between the scheduled resolutions of mFRR Processes.

      3. To this end, the HETS Operator may, for example, execute the mFRR Process within the 15-minute cycle and/or use two merit order lists already created based on the submitted Balancing Energy Bid prices, one for the upward direction and one for the downward direction.

      4. When two merit order lists are used in accordance with the provisions of paragraph 3 of this Article, the volume of mFRR Balancing Energy that can be supplied by each Balancing Service Entity shall be calculated on the basis of the volume of its Balancing Energy Offers and its technical characteristics. The HETS Operator is entitled to select and activate the mFRR Balancing Energy sequentially in accordance with the respective merit order list for the corresponding direction (upward or downward).

      5. Balancing Energy Offers that are related to immediate activation of mFRR are taken into account when calculating the mFRR Energy Price for the specific mFRR Time Unit within the framework of Balancing Market Settlement.

      6. In the event that the HETS Operator issues Dispatch Instructions that differ from the result of the mFRR resolution, the HETS Operator shall submit a report to the RAEWW justifying the choice of Balancing Service Entities selected to cover the imbalance in the HETS. The report shall be submitted for each month, within one (1) month from the end of the month to which it refers.

    • Article 16.4 Manual FRR Dispatch Instructions

      1. The results of executing the mFRR Process include the activation volumes of the upward and downward Balancing Energy Offers from the Balancing Energy Entities that are used to issue Dispatch Instructions to the Balancing Service Entities, in order to achieve balance in the Hellenic Electricity Transmission System. No Dispatch Instructions shall be issued if the volume of upward or downward Balancing Energy Offer activated by the manual FRR Process falls below a specific a limit. This limit is calculated as ¼ of 2% of the Maximum Net Capacity for Dispatchable Generating Units and as ¼ of 2% of the dispatchable capacity for Dispatchable Load Portfolios or Dispatchable RES Units Portfolios. These quantities which are calculated as 2% of the Maximum Net Capacity for Dispatchable Generating Units and as 2% of the dispatchable capacity for Dispatchable Load Portfolios or Dispatchable RES Units Portfolios, shall be rounded to a whole number. The above limit is assigned values from 0.25MWh to 1MWh. In cases where this limit is calculated to be less than 0.25MWh, it is assigned the value 0.25MW and in cases where it is calculated to be greater than 1MWh it is assigned the value 1MWh.

      2. The HETS Operator shall issue Dispatch Instructions to the Balancing Service Entities for each mFRR Time Unit, in accordance with the results of the mFRR Process.

      3. Each subsequent Dispatch Instruction shall replace each preceding one, as far as the same mFRR Time Unit is concerned.

      4. In emergency situations, the HETS Operator may issue Dispatch Instructions to a Dispatchable Generating Unit (with the agreement of the Balancing Service Provider) in order to operate at a capacity greater than the Maximum Net Capacity, as specified in its Registered Characteristics. In that case, there shall be no additional fee for the Dispatchable Generating Unit.

      5. In the event that the HETS Operator issues Dispatch Instructions that differ from the result of the mFRR resolution, the HETS Operator shall submit a report to the RAEWW justifying the choice of Balancing Service Entities selected to cover the imbalance in the HETS. The report shall be submitted for each month, within one (1) month from the end
        of the month to which it refers.

      6. The Balancing Service Entities that are selected to provide Balancing Energy shall have the obligation to follow the Dispatch Instructions issued by the HETS Operator that concern the chosen quantities and the time period.

      7. The HETS Operator may issue Dispatch Instructions to activate mFRR Balancing Energy Offers for non-balancing purposes, and Test mFRR Dispatch Instructions.

    • Article 16.5 Content of manual FRR Dispatch Instructions

      1. The HETS Operator shall issue Dispatch Instructions which shall determine the generation/offtake level of the Balancing Service Entities.

      2. Dispatch Instruction shall be notified by the HETS Operator to the Balancing Service Entity before or at the start of each mFRR Time Unit, except in the case of immediate activation of mFRR.

      3. The Dispatch Instruction expires at the end of the mFRR Time Unit to which the Dispatch Instruction was issued, unless a new Dispatch Instruction has been issued in the meantime.

      4. The execution by the Balancing Service Provider of the Dispatch Instruction relating to the Balancing Energy through immediate activation of mFRR begins directly after the respective Dispatch Instruction has been transmitted, and ceases at the end of the mFRR Time Unit in which the Dispatch Instruction was issued.

      5. Dispatch Instructions are consistent with the Declared Characteristics of Balancing Service Entities.

      6. Details regarding the issue and execution of mFRR Dispatch Instructions are provided in the Technical Decision ‘Dispatch Instructions’.

    • Article 16.6. Manual FRR Test Dispatch Instructions

      1. The HETS Operator may issue mFRR Test Dispatch Instructions to Balancing Service Entities whenever necessary and without prior notice.

      2. The mFRR Test Dispatch Instructions transmitted to Dispatchable Generating Units relate to the activation of the Minimum or Maximum Available Capacity.

      3. The mFRR Test Dispatch Instructions to the Dispatchable Load Portfolios and Dispatchable RES Unit Portfolios relate to activation of Balancing Energy corresponding to full activation of the Balancing Capacity awarded for mFRR.

      4. The HETS Operator may issue a maximum of thirteen (13) Test Dispatch Instructions (mFRR)to a Balancing Service Entity in a rolling twelve (12) month period. If a Balancing Service Entity fails to comply with an mFRRTest Dispatch Instruction, the number of mFRR Test Dispatch Instructions issued during the previous twelve (12) month period shall be set to zero for the purposes of this calculation. In the event that a Balancing Service Entity complies with two consecutive mFRR Test Dispatch Instructions, the maximum number is reduced from 13 to 6.

      5. Balancing Service Entities shall be obliged to comply with the mFRR Test Dispatch Instructions issued by the HETS Operator which relate to the volumes and time period for which a corresponding Test Dispatch Instruction has been issued. In the event of non-compliance with an mFRR Dispatch Instruction, Non-Compliance Charges shall be imposed on the respective Balancing Service Provider, calculated in accordance with Article 22.3 of this Rulebook.

      6. Details on the procedure for issuing mFRR Test Dispatch Instructions are provided in the Technical Decision ‘Dispatch Instructions’.

  • CHAPTER 17 AUTOMATIC FRR PROCESS

    • Article 17.1 Activation of automatic FRR
      1. The Balancing Energy (aFRR) is automatically activated through the use of the Automatic Generation Control (AGC) function by the HETS Operator to regulate frequency, as defined in Regulation (EU) 2017/1485.
      2. The HETS Operator shall send the local aFRR merit order list to the European aFRR Platform no later than ten (10) minutes prior to the start of the mFRR Time Unit.
      3. For each AGC cycle, the HETS Operator calculates and sends to the European aFRR Platform a demand for aFRR, taking into account the current conditions in the Hellenic Electricity Transmission System (HETS). The aFRR European Platform executes the relevant optimisation algorithm and sends the aFRR Correction Signal back to the local AGC controller.
      4. For each AGC cycle, the required activation of aFRR Balancing Energy serviced locally is the algebraic sum of the aFRR requirement and the most recent aFRR Correction Signal.
      5. The local AGC controller selects aFRR Balancing Energy Offers from the local aFRR Merit Order List in order to cover the requisite aFRR Balancing Energy activation, based on criteria that include at least activation costs.
      6. After the execution of each AGC cycle, the HETS Operator issues the respective aFRR Dispatch Instructions to the Balancing Services Entities located in the AGC to supply aFRR Balancing Energy in accordance with the local aFRR Merit Order List.
      7. In specific situations that result in changes in communication and/or data exchange with the European aFRR Platform, the HETS Operator shall disconnect from the European aFRR Platform and carry out the aFRR Process locally. During local execution of the aFRR Process, the aFRR Correction Signal received from the European aFRR Platform is set to zero.
      8. More details on the activation of aFRR Balancing Energy are provided in the Technical Decision ‘Automatic FRR’.