Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (Text with EEA relevance. )

(h) all TSOs of a LFC block shall ensure that the positive reserve capacity on FRR or a combination of reserve capacity on FRR and RR is sufficient to cover the positive LFC block imbalances for at least 99 % of the time, based on the historical records referred to in point (a);

(i) all TSOs of a LFC block shall ensure that the negative reserve capacity on FRR or a combination of reserve capacity on FRR and RR is sufficient to cover the negative LFC block imbalances for at least 99 % of the time, based on the historical record referred to in point (a);

(j) all TSOs of a LFC block may reduce the positive reserve capacity on FRR of the LFC block resulting from the FRR dimensioning process by concluding a FRR sharing agreement with other LFC blocks in accordance with provisions in Title 8. The following requirements shall apply to that sharing agreement: (i) for the CE and Nordic synchronous areas, the reduction of the positive reserve capacity on FRR of a LFC block shall be limited to the difference, if positive, between the size of the positive dimensioning incident and the reserve capacity on FRR required to cover the positive LFC block imbalances during 99 % of the time, based on the historical records referred to in point (a). The reduction of the positive reserve capacity shall not exceed 30 % of the size of the positive dimensioning incident; (ii) for the GB and IE/NI synchronous areas, the positive reserve capacity on FRR and the risk of non-delivery due to sharing shall be assessed continually by the TSOs of the LFC block;

(k) all TSOs of a LFC block may reduce the negative reserve capacity on FRR of the LFC block, resulting from the FRR dimensioning process by concluding a FRR sharing agreement with other LFC blocks in accordance with the provisions of Title 8. The following requirements shall apply to that sharing agreement: (i) for the CE and Nordic synchronous areas, the reduction of the negative reserve capacity on FRR of a LFC block shall be limited to the difference, if positive, between the size of the negative dimensioning incident and the reserve capacity on FRR required to cover the negative LFC block imbalances during 99 % of the time, based on the historical records referred to in point (a); (ii) for the GB and IE/NI synchronous areas, the negative reserve capacity on FRR and the risk of non-delivery due to sharing shall be assessed continually by the TSOs of the LFC block.

Article 158

FRR minimum technical requirements

The FRR minimum technical requirements shall be the following:

(a) each FRR providing unit and each FRR providing group shall be connected to only one reserve connecting TSO;

(b) a FRR providing unit or FRR providing group shall activate FRR in accordance with the setpoint received from the reserve instructing TSO;

(c) the reserve instructing TSO shall be the reserve connecting TSO or a TSO designated by the reserve connecting TSO in an FRR exchange agreement pursuant to Article 165(3) or 171(4);

(d) a FRR providing unit or FRR providing group for automatic FRR shall have an automatic FRR activation delay not exceeding 30 seconds;

(e) a FRR provider shall ensure that the FRR activation of the FRR providing units within a reserve providing group can be monitored. For that purpose, the FRR provider shall be capable of supplying to the reserve connecting TSO and the reserve instructing TSO real-time measurements of the connection point or another point of interaction agreed with the reserve connecting TSO concerning: (i) time-stamped scheduled active power output; (ii) time-stamped instantaneous active power for: — each FRR providing unit, — each FRR providing group, and — each power generating module or demand unit of a FRR providing group with a maximum active power output larger than or equal to 1,5 MW;

(f) a FRR providing unit or FRR providing group for automatic FRR shall be capable of activating its complete automatic reserve capacity on FRR within the automatic FRR full activation time;

(g) a FRR providing unit or FRR providing group for manual FRR shall be capable of activating its complete manual reserve capacity on FRR within the manual FRR full activation time;

(h) a FRR provider shall fulfil the FRR availability requirements; and

(i) a FRR providing unit or FRR providing group shall fulfil the ramping rate requirements of the LFC block.

Each FRR provider shall:

(a) ensure that its FRR providing units and FRR providing groups fulfil the FRR technical minimum requirements, the FRR availability requirements and the ramping rate requirements in paragraphs 1 to 3; and

(b) inform its reserve instructing TSO about a reduction of the actual availability of its FRR providing unit or its FRR providing group or a part of its FRR providing group as soon as possible.

Article 159

FRR prequalification process

The qualification of FRR providing units or FRR providing groups shall be re-assessed:

(a) at least once every 5 years; and

(b) where the technical or availability requirements or the equipment have changed.

TITLE 7

REPLACEMENT RESERVES

Article 160

RR dimensioning

The RR dimensioning rules shall comprise at least the following requirements:

(a) for the Nordic and CE synchronous areas there shall be sufficient positive reserve capacity on RR to restore the required amount of positive FRR. For the GB and IE/NI synchronous areas there shall be sufficient positive reserve capacity on RR to restore the required amount of positive FCR and positive FRR;

(b) for the Nordic and CE synchronous areas, there shall be sufficient negative reserve capacity on RR to restore the required amount of negative FRR. For the GB and IE/NI synchronous areas, there shall be sufficient negative reserve capacity on RR to restore the required amount of negative FCR and negative FRR;

(c) there shall be sufficient reserve capacity on RR, where this is taken into account to dimension the reserve capacity on FRR in order to respect the FRCE quality target for the period of time concerned; and

(d) compliance with the operational security within a LFC block to determine the reserve capacity on RR.

All TSOs of an LFC block may reduce the positive reserve capacity on RR of the LFC block, resulting from the RR dimensioning process, by developing a RR sharing agreement for that positive reserve capacity on RR with other LFC blocks in accordance with the provisions of Title 8 of Part IV. The control capability receiving TSO shall limit the reduction of its positive reserve capacity on RR in order to:

(a) guarantee that it can still meet its FRCE target parameters set out in Article 128;

(b) ensure that operational security is not endangered; and

(c) ensure that the reduction of the positive reserve capacity on RR does not exceed the remaining positive reserve capacity on RR of the LFC block.

All TSOs of a LFC block may reduce the negative reserve capacity on RR of the LFC block, resulting from the RR dimensioning process, by developing a RR sharing agreement for that negative reserve capacity on RR with other LFC blocks in accordance with the provisions of Title 8 of Part IV. The control capability receiving TSO shall limit the reduction of its negative reserve capacity on RR in order to:

(a) guarantee that it can still meet its FRCE target parameters set out in Article 128;

(b) ensure that operational security is not endangered; and

(c) ensure that the reduction of the negative reserve capacity on RR does not exceed the remaining negative reserve capacity on RR of the LFC block.

Article 161

RR minimum technical requirements

RR providing units and RR providing groups shall comply with the following minimum technical requirements:

(a) connection to only one reserve connecting TSO;

(b) RR activation according to the setpoint received from the reserve instructing TSO;

(c) the reserve instructing TSO shall be the reserve connecting TSO or a TSO that shall be designated by the reserve connecting TSO in the RR exchange agreement pursuant to Article 165(3) or 171(4);

(d) activation of complete reserve capacity on RR within the activation time defined by the instructing TSO;

(e) de-activation of RR according to the setpoint received from the reserve instructing TSO;

(f) a RR provider shall ensure that the RR activation of the RR providing units within a reserve providing group can be monitored. For that purpose, the RR provider shall be capable of supplying to the reserve connecting TSO and the reserve instructing TSO real-time measurements of the connection point or another point of interaction agreed with the reserve connecting TSO concerning: (i) the time-stamped scheduled active power output, for each RR providing unit and group and for each power generating module or demand unit of a RR providing group with a maximum active power output larger than or equal to 1,5 MW; (ii) the time-stamped instantaneous active power, for each RR providing unit and group, and for each power generating module or demand unit of a RR providing group with a maximum active power output larger than or equal to 1,5 MW;

(g) fulfilment of the RR availability requirements.

Each RR provider shall:

(a) ensure that its RR providing units and RR providing groups fulfil the RR technical minimum requirements and the RR availability requirements referred to in paragraphs 1 to 3; and

(b) inform its reserve instructing TSO about a reduction of the actual availability or a forced outage of its RR providing unit or its RR providing group or a part of its RR providing group as soon as possible.

Article 162

RR prequalification process

The qualification of RR providing units or RR providing groups shall be reassessed:

(a) at least once every 5 years; and

(b) where the technical or availability requirements or the equipment have changed.

TITLE 8

EXCHANGE AND SHARING OF RESERVES

CHAPTER 1

Exchange and sharing of reserves within a synchronous area

Article 163

Exchange of FCR within a synchronous area

Article 164

Sharing of FCR within a synchronous area

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.

Article 165

General requirements for the exchange of FRR and RR within a synchronous area

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:

(a) the responsibility of the reserve instructing TSO for the reserve capacity on FRR and RR subject to the exchange of FRR/RR;

(b) the amount of the reserve capacity on FRR and RR subject to the exchange of FRR/RR;

(c) the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148;

(d) 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;

(e) 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;

(f) 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

(g) procedures to ensure that the exchange of FRR/RR does not lead to power flows which violate the operational security limits.

Article 166

General requirements for sharing FRR and RR within a synchronous area

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:

(a) the amount of reserve capacity on FRR and RR subject to the sharing of FRR/RR;

(b) the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148;

(c) 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.

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:

(a) the reserve instructing TSO for the reserve capacity on FRR and RR subject to the sharing of FRR/RR; or

(b) 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:

(a) restrictions to provide frequency restoration or adjust the control program related to operational security; and

(b) partial or full usage of the reserve capacity on FRR and RR by the control capability providing TSO.

Article 167

Exchange of FRR within a synchronous area

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.

Article 168

Sharing of FRR within a synchronous area

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.

Article 169

Exchange of RR within a synchronous area

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.

Article 170

Sharing of RR within a synchronous area

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.

CHAPTER 2

Exchange and sharing of reserves between synchronous areas

Article 171

General requirements

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:

(a) the responsibility of the reserve instructing TSO for the reserve capacity of the reserve exchange;

(b) the amount of the reserve capacity subject to the exchange of reserves;

(c) the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148;

(d) the implementation of the prequalification for the reserve capacity subject to the exchange of reserves in accordance with Articles 155, 159 and 162;

(e) 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

(f) 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:

(a) the amount of reserve capacity subject to the sharing of reserves;

(b) the implementation of the cross-border FRR/RR activation process in accordance with Articles 147 and 148; and

(c) 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:

(a) the interactions across all timescales, including planning and activation;

(b) the MW/Hz sensitivity factor, linearity/dynamic or static/step response function of each HVDC interconnector connecting synchronous areas; and

(c) the share/interaction of these functions across multiple HVDC paths between the synchronous areas.

Article 172

Frequency coupling 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:

(a) the operational impact between the synchronous areas;

(b) the stability of the FCP of the synchronous area;

(c) the ability of the TSOs of the synchronous area to comply with the frequency quality target parameters defined in accordance with Article 127; and

(d) the operational security.

Article 173

Exchange of FCR between synchronous areas

Article 174

Sharing of FCR between 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:

(a) 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;

(b) 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.

Article 175

General requirements for sharing of FRR and RR between synchronous areas

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:

(a) the reserve instructing TSO for the reserve capacity on FRR and RR subject to the sharing of FRR or RR; or

(b) 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.

Article 176

Exchange of FRR between 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:

(a) the operational impact between the synchronous areas;

(b) the stability of the FRP of the synchronous area;

(c) 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

(d) the operational security.

Article 177

Sharing of FRR between synchronous areas

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:

(a) the operational impact between the synchronous areas;

(b) the stability of the FRP of the synchronous area;

(c) 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;

(d) 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

(e) the operational security.

Article 178

Exchange of RR between synchronous areas

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:

(a) the operational impact between the synchronous areas;

(b) the stability of the RRP of the synchronous area;

(c) 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

(d) the operational security.

Article 179

Sharing of RR between synchronous areas

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:

(a) the operational impact between the synchronous areas;

(b) the stability of the RRP of the synchronous area;

(c) 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;

(d) 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

(e) the operational security.

CHAPTER 3

Cross-border activation process for FRR/RR

Article 180

Cross-border activation process for FRR/RR

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.

TITLE 9

TIME CONTROL PROCESS

Article 181

Time control process

Where applicable, all TSOs of a synchronous area shall define in the synchronous area operational agreement the methodology to correct the electrical time deviation, which shall include:

(a) the time ranges within which TSOs shall endeavour to maintain the electrical time deviation;

(b) the frequency setpoint adjustments to return electrical time deviation to zero; and

(c) the actions to increase or decrease the average system frequency by means of active power reserves.

The synchronous area monitor shall:

(a) monitor the electrical time deviation;

(b) calculate the frequency setpoint adjustments; and

(c) coordinate the actions of the time control process.

TITLE 10

COOPERATION WITH DSOS

Article 182

Reserve providing groups or units connected to the DSO grid

For the purposes of the prequalification processes for FCR in Article 155, FRR in Article 159 and RR in Article 162, each TSO shall develop and specify, in an agreement with its reserve connecting DSOs and intermediate DSOs, the terms of the exchange of information required for these prequalification processes for reserve providing units or groups located in the distribution systems and for the delivery of active power reserves. The prequalification processes for FCR in Article 155, FRR in Article 159 and RR in Article 162 shall specify the information to be provided by the potential reserve providing units or groups, which shall include:

(a) voltage levels and connection points of the reserve providing units or groups;

(b) the type of active power reserves;

(c) the maximum reserve capacity provided by the reserve providing units or groups at each connection point; and

(d) the maximum rate of change of active power for the reserve providing units or groups.

TITLE 11

TRANSPARENCY OF INFORMATION

Article 183

General transparency requirements

Article 184

Information on operational agreements

Article 185

Information on frequency quality

The synchronous area monitor of each synchronous area shall notify the results of the criteria application process for their synchronous area to ENTSO for Electricity for publication within 3 months after the last time-stamp of the measurement period and at least four times a year. Those results shall include at least:

(a) the values of the frequency quality evaluation criteria calculated for the synchronous area and for each LFC block within the synchronous area in accordance with Article 133(3); and

(b) the measurement resolution, measurement accuracy and calculation method specified in accordance with Article 132;

Article 186

Information on the load-frequency control structure

All TSOs of each synchronous area shall notify the following information to ENTSO for Electricity for publication at least 3 months before the application of the synchronous area operational agreement:

(a) information on the process activation structure of the synchronous area, including at least information on the monitoring areas, LFC areas and LFC blocks defined and their respective TSOs; and

(b) information on the process responsibility structure of the synchronous area, including at least information on the processes developed in accordance with Article 140(1) and (2).

Article 187

Information on FCR

Article 188

Information on FRR

Article 189

Information on RR

Article 190

Information on sharing and exchange

All TSOs of each synchronous area shall notify the annual compilations of the agreements for the sharing of FRR and for the sharing of RR for each LFC block within the synchronous area to ENTSO for Electricity for publication in accordance with Articles 188(3) and 189(2). Those compilations shall include the following information:

(a) the identity of the LFC blocks where there is an agreement for the sharing of FRR or RR; and

(b) the share of FRR and RR reduced due to each agreement for the sharing of FRR or RR.

All TSOs of each synchronous area shall notify the information on the sharing of FCR between synchronous areas to ENTSO for Electricity for publication in accordance with Article 187(1). That information shall include the following:

(a) the amount of shared reserve capacity on FCR between TSOs that entered into agreements for the sharing of FCR; and

(b) the effects of the sharing of FCR on the reserve capacity on FCR of the involved TSOs.

PART V

FINAL PROVISIONS

Article 191

Amendments to contracts and general terms and conditions

All relevant clauses in contracts and general terms and conditions of TSOs, DSOs and significant grid users relating to system operation shall comply with the requirements of this Regulation. To that effect, those contracts and general terms and conditions shall be modified accordingly.

Article 192

Entry into force

This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.

Articles 41 to 53 shall apply 18 months after the entry into force of this Regulation. Where other articles foresee the provision or use of data as described in Articles 41 to 53, in the period between entry into force of this Regulation and Articles 41 to 53 becoming applicable, the latest available equivalent data shall be used, in a data format as determined by the entity responsible for the delivery of data, unless otherwise agreed.

Article 54 (4) shall apply as of the date of application of Article 41(2) of Commission (EU) 2016/631 and as of the date of application of Article 35(2) of Regulation (EU) 2016/1388.

This Regulation shall be binding in its entirety and directly applicable in all Member States.

ANNEX I

Provisions not applicable to the TSOs of Lithuania, Latvia and Estonia in accordance with Article 2(4):

(1) Article 16 subparagraphs (d), (e) and (f) of paragraph 2;

(2) Article 38(2);

(3) Article 39(3);

(4) Article 118;

(5) Article 119;

(6) Article 125;

(7) Article 126;

(8) Article 127 paragraphs 1(i), 3, 4, 5, and 9;

(9) Article 128, paragraphs 4 and 7;

(10) Article 130(1)(b);

(11) Article 131

(12) Article 132(2);

(13) from Article 133 to Article 140;

(14) Article 141 paragraphs 1, 2, 4(c), 5, 6, 9, 10 and 11;

(15) Article 142;

(16) Article 143(3);

(17) Article 145 paragraphs 1, 2, 3, 4 and 6;

(18) Article 149(3);

(19) Article 150;

(20) Article 151(2);

(21) from Article 152 to Article 181;

(22) Article 184(2);

(23) Article 185;

(24) Article 186(1);

(25) Article 187;

(26) Article 188 paragraphs 1 and 2; and

(27) Article 189(1).

ANNEX II

Voltage ranges referred to in Article 27:

Synchronous area	Voltage range
Continental Europe	0,90 pu-1,118 pu
Nordic	0,90 pu-1,05 pu
Great Britain	0,90 pu-1,10 pu
Ireland and Northern Ireland	0,90 pu-1,118 pu
Baltic	0,90 pu-1,118 pu
Synchronous area	Voltage range
---	---
Continental Europe	0,90 pu-1,05 pu
Nordic	0,90 pu-1,05 pu
Great Britain	0,90 pu-1,05 pu
Ireland and Northern Ireland	0,90 pu-1,05 pu
Baltic	0,90 pu-1,097 pu

ANNEX III

Frequency quality defining parameters referred to in Article 127:

	CE	GB	IE/NI	Nordic
standard frequency range	± 50 mHz	± 200 mHz	± 200 mHz	± 100 mHz
maximum instantaneous frequency deviation	800 mHz	800 mHz	1 000 mHz	1 000 mHz
maximum steady-state frequency deviation	200 mHz	500 mHz	500 mHz	500 mHz
time to recover frequency	not used	1 minute	1 minute	not used
frequency recovery range	not used	± 500 mHz	± 500 mHz	not used
time to restore frequency	15 minutes	15 minutes	15 minutes	15 minutes
frequency restoration range	not used	± 200 mHz	± 200 mHz	± 100 mHz
alert state trigger time	5 minutes	10 minutes	10 minutes	5 minutes

Frequency quality target parameters referred to in Article 127:

	CE	GB	IE/NI	Nordic
maximum number of minutes outside the standard frequency range	15 000	15 000	15 000	15 000

ANNEX IV

FRCE target parameters referred to in Article 128:

	GB	IE/NI
Level 1	3 %	3 %
Level 2	1 %	1 %

ANNEX V

FCR technical minimum requirements referred to in Article 154:

Minimum accuracy of frequency measurement	CE, GB, IE/NI and Nordic	10 mHz or the industrial standard if better
Maximum combined effect of inherent frequency response insensitivity and possible intentional frequency response dead band of the governor of the FCR providing units or FCR providing groups.	CE	10 mHz
GB	15 mHz
IE/NI	15 mHz
Nordic	10 mHz
FCR full activation time	CE	30 s
GB	10 s
IE/NI	15 s
Nordic	30 s if system frequency is outside standard frequency range
FCR full activation frequency deviation.	CE	± 200 mHz
GB	± 500 mHz
IE/NI	Dynamic FCR ± 500 mHz
	Static FCR ± 1 000 mHz
Nordic	± 500 mHz

ANNEX VI

Limits and requirements for the exchange of FCR referred to in Article 163:

Synchronous area	Exchange of FCR allowed between:	Limits for the exchange of FCR
CE synchronous area	TSOs of adjacent LFC blocks	— the TSOs of an LFC block shall ensure that at least 30 % of their total combined initial FCR obligations, is physically provided inside their LFC block; and — the amount of reserve capacity on FCR, physically located in an LFC block as a result of the exchange of FCR with other LFC blocks, shall be limited to the maximum of: — — 30 % of the total combined initial FCR obligations of the TSOs of the LFC block to which the reserve capacity on FCR is physically connected; and — 100 MW of reserve capacity on FCR.
TSOs of the LFC areas of the same LFC block	— the TSOs of the LFC areas constituting a LFC block shall have the right to specify in the LFC block operational agreement internal limits for the exchange of FCR between the LFC areas of the same LFC block in order to: — — avoid internal congestions in case of the activation of FCR; — ensure an even distribution of reserve capacity on FCR for the case of network splitting; and — avoid that the stability of the FCP or the operational security is affected.
Other synchronous areas	TSOs of the synchronous area	— The TSOs of the synchronous area shall have the right to specify in the synchronous area operational agreement limits for the exchange of FCR in order to: — — avoid internal congestions in case of the activation of FCR; — ensure an even distribution of FCR in case of network splitting; and — avoid that the stability of the FCP or the operational security is affected.

ANNEX VII

Requirements and limits for the exchange of FRR within the synchronous area referred to in Article 167:

Synchronous area	Exchange of FRR allowed between	Limits for the exchange of FRR
All synchronous areas consisting of more than one LFC block	TSOs of different LFC blocks	— The TSOs of a LFC block shall ensure that at least 50 % of their total combined reserve capacity on FRR resulting from the FRR dimensioning rules in Article 157(1) and before any reduction due to the sharing of FRR in accordance with Article 157(2) remains located within their LFC block.
TSOs of the LFC areas of the same LFC block	— The TSOs of the LFC areas constituting a LFC block shall have the right, if needed, to specify internal limits, for the exchange of FRR between the LFC areas of the LFC block in the LFC block operational agreement to: — — avoid internal congestions due to the activation of the reserve capacity on FRR subject to the exchange of FRR; — ensure an even distribution of FRR throughout the synchronous area and LFC blocks in case of network splitting; — avoid that the stability of the FRP or the operational security is affected.

ANNEX VIII

Requirements and limits for the exchange of RR within the synchronous area referred to in Article 169:

Synchronous area	Exchange of RR allowed between	Limits for the exchange of RR
All synchronous areas consisting of more than one LFC block	TSOs of different LFC blocks	— The TSOs of the LFC areas constituting a LFC block shall ensure that at least 50 % of their total combined reserve capacity on RR resulting from the RR dimensioning rules according to Article 160(3) and before any reduction of reserve capacity on RR as a result of the sharing of RR according to Article 160(4) and Article 160(5) remains located within their LFC block.
TSOs of the LFC areas of the same LFC block	— The TSOs of the LFC areas constituting a LFC block shall have the right, if required, to define internal limits for the exchange of RR between LFC areas of the LFC block in the LFC block operational agreement as to: — — avoid internal congestions due to the activation of reserve capacity on RR subject to the exchange of RR; — ensure an even distribution of RR throughout the synchronous area in case of network splitting; and — avoid that the stability of the RRP or the operational security is affected.