Capacity calculation regions
Article 8
For the purposes of this Regulation the capacity calculation regions shall be those established pursuant to Article 15 of Regulation (EU) 2015/1222.
Commission Regulation (EU) 2016/1719 CHAPTER 1 — Forward capacity calculation
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Section 1 — General requirements
Capacity calculation time frames
Article 9
All TSOs in each capacity calculation region shall ensure that long-term cross-zonal capacity is calculated for each forward capacity allocation and at least on annual and monthly time frames.
Section 2 — Capacity calculation methodology
Capacity calculation methodology
Article 10
1. No later than six months after the approval of the common coordinated capacity calculation methodology referred to in Article 9(7) of Regulation (EU) 2015/1222, all TSOs in each capacity calculation region shall submit a proposal for a common capacity calculation methodology for long-term time frames within the respective region. The proposal shall be subject to consultation in accordance with Article 6. 2. The approach used in the common capacity calculation methodology shall be either a coordinated net transmission capacity approach or a flow-based approach. 3. The capacity calculation methodology shall be compatible with the capacity calculation methodology established for the day-ahead and intraday time frames pursuant to Article 21(1) of Regulation (EU) 2015/1222. 4. The uncertainty associated with long-term capacity calculation time frames shall be taken into account when applying: (a) a security analysis based on multiple scenarios and using the capacity calculation inputs, the capacity calculation approach referred to in Article 21(1)(b) and the validation of cross-zonal capacity referred to in Article 21(1)(c) of Regulation (EU) 2015/1222; or (b) a statistical approach based on historical cross-zonal capacity for day-ahead or intraday time frames if it can be demonstrated that this approach may: (i) increase the efficiency of the capacity calculation methodology; (ii) better take into account the uncertainties in long-term cross-zonal capacity calculation than the security analysis in accordance with paragraph 4(a); (iii) increase economic efficiency with the same level of system security. 5. All TSOs in each capacity calculation region may jointly apply the flow-based approach for long-term capacity calculation time frames on the following conditions: (a) the flow-based approach leads to an increase of economic efficiency in the capacity calculation region with the same level of system security; (b) the transparency and accuracy of the flow-based results have been confirmed in the capacity calculation region; (c) the TSOs provide market participants with six months to adapt their processes. 6. Where a security analysis based on multiple scenarios is applied for developing the capacity calculation methodology in a capacity calculation region, the requirements for the capacity calculation inputs, the capacity calculation approach and the validation of cross-zonal capacity as provided for in Article 21(1) of Regulation (EU) 2015/1222, except Article 21(1)(a)(iv) where relevant, shall apply. 7. When developing the capacity calculation methodology, the requirements for the fallback procedures and the requirement provided for in Article 21(3) of Regulation (EU) 2015/1222 shall be taken into account.
Reliability margin methodology
Article 11
The proposal for a common capacity calculation methodology shall include a reliability margin methodology which shall meet the requirements set out in Article 22 of Regulation (EU) 2015/1222.
Methodologies for operational security limits and contingencies
Article 12
The proposal for a common capacity calculation methodology shall include methodologies for operational security limits and contingencies which shall meet the requirements set out in Article 23(1) and (2) of Regulation (EU) 2015/1222.
Generation shift keys methodology
Article 13
The proposal for a common capacity calculation methodology shall include a methodology to determine generation shift keys which shall meet the requirements set out in Article 24 of Regulation (EU) 2015/1222.
Methodology for remedial actions
Article 14
If remedial actions are taken into account in the long-term capacity calculation, each TSO shall ensure that those remedial actions are technically available in real time operation and meet the requirements set out in Article 25 of Regulation (EU) 2015/1222.
Cross-zonal capacity validation methodology
Article 15
The proposal for a common capacity calculation methodology shall include a cross-zonal validation methodology which shall meet the requirements set out in Article 26 of Regulation (EU) 2015/1222.
Methodology for splitting long-term cross-zonal capacity
Article 16
1. No later than the submission of the capacity calculation methodology referred to in Article 10, the TSOs of each capacity calculation region shall jointly develop a proposal for a methodology for splitting long-term cross-zonal capacity in a coordinated manner between different long-term time frames within the respective region. The proposal shall be subject to consultation in accordance with Article 6. 2. The methodology for splitting long-term cross-zonal capacity shall comply with the following conditions: (a) it shall meet the hedging needs of market participants; (b) it shall be coherent with the capacity calculation methodology; (c) it shall not lead to restrictions in competition, in particular for access to long-term transmission rights.
Section 3 — Common grid model
Generation and load data provision methodology
Article 17
1. No later than six months after the approval of the generation and load data provision methodology established for the day-ahead and intraday time frames referred to in Article 9(6) of Regulation (EU) 2015/1222, all TSOs shall jointly develop a proposal for a single generation and load data provision methodology for delivering the generation and load data required to establish the common grid model for long-term time frames. The proposal shall be subject to consultation in accordance with Article 6. The methodology shall take into account and complement the generation and load data provision methodology according to Article 16 of Regulation (EU) 2015/1222. 2. When developing the generation and load data provision methodology, the requirements set in Article 16 of Regulation (EU) 2015/1222 shall apply.
Common grid model methodology
Article 18
1. No later than six months after the approval of the common grid model methodology established for the day-ahead and intraday time frames referred to in Article 9(6) of Commission Regulation (EU) 2015/1222, all TSOs shall jointly develop a proposal for a common grid model methodology for long-term time frames. The methodology shall be subject to consultation in accordance with Article 6. 2. The common grid model methodology shall take into account and complement the common grid model methodology developed pursuant to Article 17 of Regulation (EU) 2015/1222. The methodology shall enable the establishment of the common grid model for long-term capacity calculation time frames in capacity calculation regions where security analysis based on multiple scenarios pursuant to Article 10 is applied. 3. When developing the common grid model methodology, the requirements set in Article 17 of Regulation (EU) 2015/1222 shall apply.
Scenarios
Article 19
1. All TSOs in capacity calculation regions, where security analysis based on multiple scenarios pursuant to Article 10 is applied, shall jointly develop a common set of scenarios to be used in the common grid model for each long-term capacity calculation time frame. 2. When developing the common set of scenarios, the relevant requirements set in Article 18 of Regulation (EU) 2015/1222 shall apply.
Individual grid model
Article 20
When developing the individual grid model for a long-term capacity calculation time frame in capacity calculation regions, where security analysis based on multiple scenarios pursuant to Article 10 is applied, each TSO shall apply the requirements set in Article 19 of Regulation (EU) 2015/1222.
Section 4 — Capacity calculation process
General provisions
Article 21
1. The process of merging the individual grid models established in accordance with Article 27 of Regulation (EU) 2015/1222 shall apply when merging the individual grid models into a common grid model for each long-term time frame. No later than six months after the approval of the generation and load data provision methodology for long-term time frames referred to in Article 17 and the common grid model methodology for long-term time frames referred to in Article 18, all TSOs in each capacity calculation region shall jointly develop operational rules for long-term capacity calculation time frames supplementing the rules defined for the operation to merge the individual grid models pursuant to Article 27 of Regulation (EU) 2015/1222. 2. The coordinated capacity calculators established in Article 27 of Regulation (EU) 2015/1222 shall calculate long-term cross-zonal capacities for their capacity calculation region. For this purpose, no later than six months after the approval of the capacity calculation methodology for long-term time frames referred to in Article 10, all TSOs in each capacity calculation region shall jointly develop operational rules for long-term capacity calculation time frames supplementing the rules defined for the operation of the coordinated capacity calculators pursuant to Article 27 of Regulation (EU) 2015/1222. 3. The relevant requirements set in Article 27 of Regulation (EU) 2015/1222 shall apply for long-term capacity calculation time frames.
Creation of a common grid model
Article 22
The process and requirements set in Article 28 of Regulation (EU) 2015/1222 for creating a common grid model shall apply when creating the common grid model for long-term capacity calculation time frames in capacity calculation regions, where security analysis based on multiple scenarios pursuant to Article 10 is applied.
Regional calculations of long-term cross-zonal capacities
Article 23
1. Where TSOs apply the statistical approach pursuant to Article 10, the process for the calculation of long-term cross-zonal capacity shall include at least: (a) a selection of historical day-ahead or intraday cross-zonal capacity data sets from a single period or a set of periods and order the data into a duration curve; (b) a calculation of capacity corresponding to the risk level for the selected data set; (c) a calculation of long-term cross-zonal capacity to be offered to forward capacity allocation taking into account a margin to reflect the difference between historical cross-zonal capacity values and forecasted long-term cross-zonal capacity values; (d) common rules to take into account available information about planned outages, new infrastructure and generation and load pattern for the long-term capacity calculation time frames. 2. Where TSOs apply the security analysis based on multiple scenarios pursuant to Article 10, the requirements set in Article 29 of Regulation (EU) 2015/1222, except Article 29(4) where relevant, shall apply to long-term capacity calculation time frames in capacity calculation regions. 3. Each coordinated capacity calculator shall split the calculated long-term cross-zonal capacity for each forward capacity allocation by applying the methodology for splitting cross-zonal capacity pursuant to Article 16. 4. Each coordinated capacity calculator shall submit the calculated long-term cross-zonal capacity and the splitting of long-term cross-zonal capacity for validation to each TSO within the relevant capacity calculation region pursuant to Article 24.
Validation and delivery of cross-zonal capacity and split cross-zonal capacity
Article 24
1. Each TSO shall validate the results of the calculation for long-term cross-zonal capacity on its bidding zone borders or critical network elements for each long-term capacity calculation time frame pursuant to Article 15. 2. Each TSO shall validate the results of the calculation for splitting of long-term cross-zonal capacity on its bidding zone borders or critical network elements pursuant to Article 16. 3. Each TSO shall send its capacity validation and validated splitting of this capacity for each forward capacity allocation to the relevant coordinated capacity calculators and to the other TSOs of the relevant capacity calculation regions. 4. Validated splitting of long-term cross-zonal capacity shall be provided by each coordinated capacity calculator for the execution of forward capacity allocation pursuant to Article 29. 5. TSOs shall, upon request, provide to their regulatory authorities a report detailing how the value of long-term cross-zonal capacity for a specific long-term capacity calculation time frame has been obtained.
Coordinated curtailment of cross-zonal capacity
Article 25
1. TSOs shall coordinate curtailments of already allocated long-term cross-zonal capacity, if the curtailments concern a time frame of more than 48 hours ahead of the start of the delivery day. In case of curtailment of long-term transmission rights, including nominations in respect of such rights, within 48 hours ahead of the start of the delivery day, TSOs in each capacity calculation region shall apply the day-ahead and intraday capacity calculation process as referred in Article 29 of Regulation (EU) 2015/1222. 2. If a TSO needs to curtail already allocated long-term cross-zonal capacity, it shall send a request to the responsible coordinated capacity calculator to launch the coordinated calculation of necessary curtailments of long-term cross-zonal capacity for the capacity calculation region. The TSO shall support its request with all relevant information. 3. The coordinated capacity calculator shall provide the updated cross-zonal capacity to the relevant TSOs for validation. 4. Each TSO shall validate the updated cross-zonal capacity on its bidding zone borders or critical network elements pursuant to Article 24. 5. The coordinated capacity calculator shall provide the validated updated cross-zonal capacity to the relevant TSOs and single allocation platform to perform curtailment pursuant to Article 53.
Section 5 — Biennial report on capacity calculation
Biennial report on capacity calculation and allocation
Article 26
1. No later than two years after the entry into force of this Regulation, ENTSO for Electricity shall draft a report on long-term capacity calculation and allocation, and submit it to the Agency. 2. If the Agency requests it, in every second subsequent year, ENTSO for Electricity shall draft a report on long-term capacity calculation and allocation. If applicable, this report shall be submitted to the Agency together with the biennial report on the capacity calculation and allocation according to Article 31 of Regulation (EU) 2015/1222. 3. For each bidding zone, bidding zone border and capacity calculation region, the report on capacity calculation and allocation shall contain at least: (a) the capacity calculation approach used; (b) statistical indicators on reliability margins; (c) statistical indicators of cross-zonal capacity, where appropriate for each capacity calculation time frame; (d) quality indicators for the information used for the capacity calculation; (e) where appropriate, proposed measures to improve capacity calculation; (f) recommendations for further development of the forward capacity calculation, including further harmonisation of methodologies, processes and governance arrangements. 4. After consulting the Agency, all TSOs shall jointly agree on the statistical and quality indicators for the report. The Agency may require the amendment of those indicators, prior to the agreement by the TSOs or during their application. 5. The Agency shall decide whether to publish all or part of the biennial report.
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