TITLE 8

All TSOs involved in the exchange of FCR within a synchronous area shall comply with the requirements set out in paragraphs 2 to 9. The exchange of FCR implies a transfer of a FCR obligation from the reserve receiving TSO to the reserve connecting TSO for the corresponding reserve capacity on FCR. All TSOs involved in the exchange of FCR within a synchronous area shall respect the limits and requirements for the exchange of FCR within the synchronous area specified in the Table of Annex VI. In case of exchange of FCR, the reserve connecting TSO and reserve receiving TSO shall notify it in accordance with Article 150. Any reserve connecting TSO, reserve receiving TSO or affected TSO involved in the exchange of FCR may refuse the exchange of FCR where it would result in power flows that violate the operational security limits when activating the reserve capacity on FCR subject to the exchange of FCR. Each affected TSO shall verify that its reliability margin, established in accordance with Article 22 of Regulation (EU) 2015/1222, is sufficient to accommodate the power flows resulting from the activation of the reserve capacity on FCR subject to the exchange of FCR. All TSOs of a LFC area shall adjust the parameters of their FRCE calculation to account for the exchange of FCR. The reserve connecting TSO shall be responsible for the requirements referred to in Articles 154 and 156 as regards the reserve capacity on FCR subject to the exchange of FCR. The FCR providing unit or group shall be responsible towards its reserve connecting TSO for FCR activation. The concerned TSOs shall ensure that exchange of FCR does not prevent any TSO from fulfilling the reserve requirements in Article 156. A TSO shall not share FCR with other TSOs of its synchronous area to fulfil its FCR obligation and to reduce the total amount of FCR of the synchronous area in accordance with Article 153. All TSOs of a synchronous area shall define in the synchronous area operational agreement the roles and responsibilities of the reserve connecting TSO, the reserve receiving TSO and the affected TSO for the exchange of FRR and/or RR. Where an exchange of FRR/RR takes place, the reserve connecting TSO and reserve receiving TSO shall notify that exchange pursuant to the notification requirements in Article 150. The reserve connecting and reserve receiving TSOs participating in the exchange of FRR/RR shall specify in a FRR or RR exchange agreement their roles and responsibilities, including: the responsibility of the reserve instructing TSO for the reserve capacity on FRR and RR subject to the exchange of FRR/RR; the amount of the reserve capacity on FRR and RR subject to the exchange of FRR/RR; the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148; FRR/RR technical minimum requirements related to the cross-border FRR/RR activation process where the reserve connecting TSO is not the reserve instructing TSO; the implementation of the FRR/RR prequalification for the reserve capacity on FRR and RR subject to exchange in accordance with Articles 159 and 162; the responsibility to monitor the fulfilment of the FRR/RR technical requirements and FRR/RR availability requirements for the reserve capacity on FRR and RR subject to exchange in accordance with Articles 158(5) and 161(5); and procedures to ensure that the exchange of FRR/RR does not lead to power flows which violate the operational security limits. Any reserve connecting TSO, reserve receiving TSO or affected TSO involved in the exchange of FRR or RR may refuse the exchange referred to in paragraph 2 where it would result in power flows that violate the operational security limits when activating the reserve capacity on FRR and RR subject to the exchange of FRR or RR. The concerned TSOs shall ensure that exchange of FRR/RR does not prevent any TSO from complying with the reserve requirements established in the FRR or RR dimensioning rules in Articles 157 and 160. All TSOs of a LFC block shall specify in the LFC block operational agreement the roles and responsibilities of the reserve connecting TSO, the reserve receiving TSO and the affected TSO for the exchange of FRR and/or RR with TSOs of other LFC blocks. All TSOs of a synchronous area shall specify in the synchronous area operational agreement the roles and responsibilities of the control capability providing TSO, the control capability receiving TSO and the affected TSO for sharing FRR/RR. Where FRR/RR sharing takes place, the control capability providing TSO and control capability receiving TSO shall notify that sharing pursuant to the notification requirements in Article 150. The control capability receiving TSO and the control capability providing TSO participating in the sharing of FRR/RR shall specify in a FRR or RR sharing agreement their roles and responsibilities, including: the amount of reserve capacity on FRR and RR subject to the sharing of FRR/RR; the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148; procedures to ensure that the activation of the reserve capacity on FRR and RR subject to the sharing of FRR/RR does not lead to power flows that violate the operational security limits. Any control capability providing TSO, control capability receiving TSO or affected TSO involved in the sharing of FRR/RR may refuse sharing of FRR/RR where it would result in power flows that violate the operational security limits when activating the reserve capacity on FRR and RR subject to the sharing of FRR/RR. In case of sharing of FRR/RR, the control capability providing TSO shall make available to the control capability receiving TSO a share of its own reserve capacity on FRR and RR required to comply with its reserve requirements for FRR and/or RR resulting from the FRR/RR dimensioning rules in Articles 157 and 160. The control capability providing TSO can be either: the reserve instructing TSO for the reserve capacity on FRR and RR subject to the sharing of FRR/RR; or the TSO having access to its reserve capacity on FRR and RR subject to the sharing of FRR/RR through an implemented cross-border FRR/RR activation process as part of an FRR/RR exchange agreement. Each control capability receiving TSO shall be responsible for coping with incidents and imbalances in case the reserve capacity on FRR and RR subject to the sharing of FRR/RR are unavailable due to: restrictions to provide frequency restoration or adjust the control program related to operational security; and partial or full usage of the reserve capacity on FRR and RR by the control capability providing TSO. All TSOs of a LFC block shall specify in the LFC block operational agreement their roles and responsibilities of the control capability providing TSO, the control capability receiving TSO and the affected TSO for the sharing of FRR and RR with TSOs of other LFC blocks. All TSOs in a synchronous area consisting of more than one LFC block involved in the exchange of FRR within the synchronous area shall comply with the requirements and limits for the exchange of FRR set out in the Table of Annex VII. Each TSO of a LFC block shall have the right to share FRR with other LFC blocks of its synchronous area within the limits set by the FRR dimensioning rules in Article 157(1) and in accordance with Article 166. All TSOs in a synchronous area consisting of more than one LFC block involved in the exchange of RR within the synchronous area shall comply with the requirements and limits for the exchange of RR set out in the Table of Annex VIII. Each TSO of a LFC block shall have the right to share RR with other LFC blocks of the same synchronous area within the limits set by the RR dimensioning rules in Article 160(4) and (5) and in accordance with Article 166. Each operator and/or owner of an HVDC interconnector which interconnects synchronous areas shall provide to the connecting TSOs the capability to perform the exchange and sharing of FCR, FRR and RR if this technology is installed. All TSOs of the synchronous area shall specify in the synchronous area operational agreement the roles and the responsibilities of the reserve connecting TSO, the reserve receiving TSO and the affected TSO for the exchange of reserves as well as for the control capability providing TSO, control capability receiving TSO and affected TSO for the sharing of reserves between synchronous areas. The reserve connecting TSO and reserve receiving TSO or the control capability providing TSO and the control capability receiving TSO shall notify the exchange or sharing of FCR, FRR or RR in accordance with Article 150. The reserve connecting TSO and reserve receiving TSO involved in the exchange of reserves shall specify, in an exchange agreement, their roles and responsibilities, including: the responsibility of the reserve instructing TSO for the reserve capacity of the reserve exchange; the amount of the reserve capacity subject to the exchange of reserves; the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148; the implementation of the prequalification for the reserve capacity subject to the exchange of reserves in accordance with Articles 155, 159 and 162; the responsibility to monitor compliance with the technical requirements and availability requirements of the reserve capacity subject to the exchange of reserves pursuant to Articles 158(5) and 161(5); and procedures to ensure that the exchange of reserves does not lead to power flows that violate the operational security limits. The control capability providing and control capability receiving TSO involved in the sharing of reserves shall specify their roles and responsibilities in a sharing agreement, including: the amount of reserve capacity subject to the sharing of reserves; the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148; and the procedures to ensure that the sharing of reserves does not lead to power flows that violate the operational security limits. The reserve connecting TSO and reserve receiving TSO involved in the exchange of reserves, or the control capability providing and control capability receiving TSO involved in the sharing of reserves shall develop and adopt an HVDC operating and coordination agreement with the HVDC interconnector owners and/or HVDC interconnector operators or with legal entities comprising HVDC interconnector owners and/or HVDC interconnector operators, including: the interactions across all timescales, including planning and activation; the MW/Hz sensitivity factor, linearity/dynamic or static/step response function of each HVDC interconnector connecting synchronous areas; and the share/interaction of these functions across multiple HVDC paths between the synchronous areas. Any reserve connecting TSO, reserve receiving TSO, control capability providing TSO, control capability receiving TSO or affected TSO involved in the exchange or sharing of reserves may refuse the exchange or sharing of reserve where it would result in power flows that violate the operational security limits when activating the reserve capacity subject to the exchange or sharing of reserve. The involved TSOs shall ensure that exchange of reserves between synchronous areas does not prevent any TSO from complying with the reserve requirements in Articles 153, 157 and 160. The reserve connecting TSO and reserve receiving TSO and the control capability providing and control capability receiving TSO shall specify procedures in an exchange agreement or sharing agreement for cases when the exchange or the sharing of reserves between synchronous areas cannot be executed in real-time. All TSOs of the synchronous areas connected via an HVDC interconnector shall have the right to implement a frequency coupling process to provide linked frequency response. The frequency coupling process may be used by TSOs to enable FCR exchange and/or sharing between synchronous areas. All TSOs of each synchronous area shall specify the technical design of the frequency coupling process in the synchronous area operational agreement. The frequency coupling process shall take into account: the operational impact between the synchronous areas; the stability of the FCP of the synchronous area; the ability of the TSOs of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127; and the operational security. Each HVDC interconnector operator shall control the active power flow over the HVDC interconnector in accordance with the implemented frequency coupling process. All TSOs of a synchronous area involved in a frequency coupling process shall have the right to use the FCR exchange process to exchange FCR between synchronous areas. All TSOs of synchronous areas involved in the exchange of FCR between synchronous areas shall organise that exchange so that the TSOs of one synchronous area receive from another synchronous area a share of the total reserve capacity on FCR required for their synchronous area pursuant to Article 153. The share of the total reserve capacity on FCR required for synchronous area where it is exchanged shall be provided in the second synchronous area in addition to the total reserve capacity on FCR required for that second synchronous area in accordance with Article 153. All TSOs of the synchronous area shall specify in the synchronous area operational agreement the limits for FCR exchange. All TSOs of the involved synchronous areas shall develop an FCR exchange agreement whereby they specify conditions for the exchange of FCR. All TSOs of a synchronous area involved in a frequency coupling process shall have the right to use that process to share FCR between the synchronous areas. All TSOs of the synchronous area shall specify the limits for FCR sharing in the synchronous area operational agreement, in accordance with the following criteria: for the CE and Nordic synchronous area, all TSOs shall ensure that the sum of FCR provided within the synchronous area and from other synchronous areas as part of exchange of FCR covers at least the reference incident; for the GB and IE/NI synchronous areas, all TSOs shall specify a methodology to determine the minimum provision of reserve capacity on FCR in the synchronous area. All TSOs of the involved synchronous areas shall specify the conditions for sharing FCR between the involved synchronous areas in their respective synchronous area operational agreements. In case of sharing of FRR or RR, the control capability providing TSO shall make available to the control capability receiving TSO a share of its own reserve capacity on FRR and RR required to comply with the reserve requirements for FRR and/or RR resulting from the FRR/RR dimensioning rules referred to in Articles 157 and 160. The control capability providing TSO can be either: the reserve instructing TSO for the reserve capacity on FRR and RR subject to the sharing of FRR or RR; or the TSO having access to its reserve capacity on FRR and RR subject to the sharing of FRR/RR through an implemented cross-border FRR/RR activation process as part of a FRR/RR exchange agreement. All TSOs of an LFC block shall specify in the LFC block operational agreement their roles and responsibilities of the control capability providing TSO, the control capability receiving TSO and the affected TSO for the sharing of FRR and RR with TSOs of other LFC blocks in other synchronous areas. All TSOs of each synchronous area shall specify in the synchronous area operational agreement a method to determine the limits for the exchange of FRR with other synchronous areas. That method shall take into account: the operational impact between the synchronous areas; the stability of the FRP of the synchronous area; the ability of TSOs of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127 and the FRCE target parameters defined in accordance with Article 128; and the operational security. All TSOs of the LFC blocks involved in the exchange of FRR between synchronous areas shall organise that exchange so that the TSOs of a LFC block in the first synchronous area may receive a share of the total reserve capacity on FRR required for their LFC block as determined in accordance with the Article 157(1) from a LFC block in the second synchronous area. The share of the total reserve capacity on FRR required for the LFC block in the synchronous area where it is exchanged shall be provided from the LFC block in the second synchronous area in addition to the total reserve capacity on FRR required for that second LFC block in accordance with Article 157(1). Each operator of a HVDC interconnector shall control the active power flow over the HVDC interconnector following the instructions provided by either the reserve connecting TSO or reserve receiving TSO in accordance with the FRR technical minimum requirements referred to in Article 158. All TSOs of the LFC blocks to which the reserve connecting TSO and the reserve receiving TSO belong shall specify the conditions for exchange of FRR in an FRR exchange agreement. All TSOs of each synchronous area shall specify in the synchronous area operational agreement a methodology to determine limits for the sharing of FRR with other synchronous areas. That methodology shall take into account: the operational impact between the synchronous areas; the stability of the FRP of the synchronous area; the maximum reduction of FRR that can be taken into account in the FRR dimensioning in accordance with Article 157 as a result of the FRR sharing; the ability of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127 and the FRCE target parameters defined in accordance with Article 128; and the operational security. All TSOs of the LFC blocks involved in the sharing of FRR between synchronous areas shall organise that sharing so that the TSOs of a LFC block in the first synchronous area may receive a share of the total reserve capacity on FRR required for their LFC block as defined in accordance with the Article 157(1) from a LFC block in the second synchronous area. Each operator of a HVDC interconnector shall control the active power flow over the HVDC interconnector following the instructions provided by either the control capability providing TSO or control capability receiving TSO in accordance with the FRR technical minimum requirements in Article 158(1). All TSOs of the LFC blocks to which the control capability providing TSO and the control capability receiving TSOs belong shall specify the conditions for sharing FRR in an FRR sharing agreement. All TSOs of each synchronous area shall define in the synchronous area operational agreement a method to determine limits for the exchange of RR with other synchronous areas. That method shall take into account: the operational impact between the synchronous areas; the stability of the RRP of the synchronous area; the ability of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127 and the FRCE target parameters defined in accordance with Article 128; and the operational security. All TSOs of the LFC blocks involved in the exchange of RR between synchronous areas shall organise that exchange so that the TSOs of a LFC block in the first synchronous area may receive a share of the total reserve capacity on RR required for their LFC block as defined in Article 160(2) from a LFC block in the second synchronous area. The share of the total reserve capacity on RR required for the LFC block in the synchronous area where it is exchanged shall be provided from the LFC block in the second synchronous area in addition to the total reserve capacity on RR required for that second LFC block in accordance with Article 160(2). Each operator of a HVDC interconnector shall control the active power flow over the HVDC interconnector following the instructions provided by either the reserve connecting TSO or the reserve receiving TSO in accordance with the RR technical minimum requirements in Article 161. All TSOs of the LFC blocks to which the reserve connecting TSO and the reserve receiving TSO belong shall specify the conditions for the exchange of RR in an RR exchange agreement. All TSOs of each synchronous area shall define in the synchronous area operational agreement a method for determining the limits for sharing of RR with other synchronous areas. That method shall take into account: the operational impact between the synchronous areas; the stability of the RRP of the synchronous area; the maximum reduction of RR that can be taken into account in the RR dimensioning rules in accordance with Article 160 as a result of the RR sharing; the ability of the TSOs of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127 and the ability of the LFC blocks to comply with the FRCE error target parameters defined in accordance with Article 128; and the operational security. All TSOs of the LFC blocks involved in the sharing of RR between synchronous areas shall organise that sharing so that the TSOs of an LFC block in the first synchronous area may receive a share of the total reserve capacity on RR required for their LFC block as defined in accordance with Article 160(2) from a LFC block in the second synchronous area. Each operator of an HVDC interconnector shall control the active power flow over the HVDC interconnector following the instructions provided by either the control capability providing TSO or the control capability receiving TSO in accordance with the RR technical minimum requirements in Article 161. All TSOs of each LFC block to which the reserve control capability providing TSO and reserve control capability receiving TSO belong to, shall specify the conditions for the sharing of RR in an RR sharing agreement. All TSOs involved in the cross-border activation of FRR and RR in the same or different synchronous areas shall comply with the requirements set out in Articles 147 and 148.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.