Capacity Allocation & Congestion Management

The Guideline on Capacity Allocation and Congestion Management sets out the methods for calculating how much space can market participants use on cross border lines without endangering system security. It also harmonises how cross border markets operate in Europe to increase competitiveness but renewables’ integration. CACM is the cornerstone of a European single market for electricity.

Current Status
Entered into force
Read the guideline

Published Regulation

The published network codes become regulations. Use this section for a handy way to jump to a particular article of the network code.

COMMISSION REGULATION (EU) 1222/2015

of 24 July 2015

establishing a guideline on capacity allocation and congestion management

Implementation - Making the code a reality

Core Capacity Calculation Region Project

Project to merge the two capacity calculation regions (CCRs) Central Western Europe and Central Eastern Europe into one.

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Congestion Income Distribution Methodology

All TSOs' proposal for a Congestion Income Distribution Methodology

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Common Grid Model Methodology and a Generation and Load D...

Articles 17 and 16 of Regulation 2015/1222 require all TSOs to prepare a Common Grid Model Methodology as well as a Generation and Load Data Provision Methodology, respectively

CGMM-v1-plus GLDPM-v1

Capacity calculation region methodologies

Use the page to keep track of the methodologies received by the respective CCR.

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Capacity Calculation Regions

Approval by all Regulatory Authorities agreed at the Energy Regulators’ Forum on the all TSOs’ Proposal for Amendment in accordance with Article 9(13) of the Commission Regulation (EU) 2015/1222 of 24 July 2015 establishing a Guideline on Capacity Allocation and Congestion Management on the Determination of Capacity Calculation Regions (30 June 2017)

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Latest Updates (29)

Events (19)

CACM Deliverables

A 10 Organize Day Ahead and Intraday coupling - TSOs...
Full Title
Organize Day Ahead and Intraday coupling - TSOs and NEMOs meeting to discuss governance
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
31/12/2019
A 15.1 Develop proposal for determination of capacity calculation regions...
Full Title
Develop proposal for determination of capacity calculation regions
Responsible
All TSOs
Cluster
Geographical Scope
TSOs final submission
14/10/2015
TSO amendment request
TSO
ACER decision final approval
17/11/2016
A 16.1 Develop proposal for Generation and Load Data Provision...
Full Title
Develop proposal for Generation and Load Data Provision Methodology
Responsible
All TSOs
Cluster
Geographical Scope
TSOs Draft Proposal For Consultation
4/02/2016
TSOs proposal deadline
15/06/2016
TSOs final submission
14/06/2016
NRA final approval
11/01/2017
A 16.6 List of entities to provide information & content...
Full Title
List of entities to provide information & content of information & time schedules for provision of information
Responsible
ENTSO-E
Cluster
Geographical Scope
TSOs proposal deadline
11/03/2017
TSOs final submission
10/03/2017
A 17.1 Develop proposal for Common Grid Model Methodology
Full Title
Develop proposal for Common Grid Model Methodology
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/06/2016
TSOs final submission
14/06/2016
TSOs amendment final approval
15/02/2017
NRA approval deadline
A 20.2 Submit a proposal for a common coordinated capacity...
Full Title
Submit a proposal for a common coordinated capacity calculation methodology
Responsible
TSOs of CCR (capacity calculation region)
Cluster
Geographical Scope
A 32 Review bidding zones (started as early implementation)
Full Title
Review bidding zones (started as early implementation)
Responsible
Cluster
Geographical Scope
A 34.4 Deliver technical and Market Report on BZ
Full Title
Deliver technical and Market Report on BZ
Responsible
ENTSO-E
Cluster
Geographical Scope
TSOs proposal deadline
19/10/2018
TSOs final submission
15/10/2018
A 35.1 Develop proposal for redispatching methodology
Full Title
Develop proposal for redispatching methodology
Responsible
TSOs of CCR (capacity calculation region)
Cluster
Geographical Scope
A 35.3 Develop a report assessing the progressive coordination and...
Full Title
Develop a report assessing the progressive coordination and harmonisation of RD and CT mechanisms and agreements
Responsible
TSOs of CCR (capacity calculation region)
Cluster
Geographical Scope
A 36.3 Support to NEMOs - Develop proposal for a...
Full Title
Support to NEMOs - Develop proposal for a back-up methodology
Responsible
Cluster
Geographical Scope
TSOs proposal deadline
15/02/2017
A 37 Develop the Price Coupling and Continuous Matching Algorithm...
Full Title
Develop the Price Coupling and Continuous Matching Algorithm requirements in support to NEMOS
Responsible
Cluster
Geographical Scope
ACER decision deadline
30/06/2018
ACER decision final approval
30/07/2018
A 43.1 Develop methodology for calculating scheduled exchanges resulting from...
Full Title
Develop methodology for calculating scheduled exchanges resulting from single day-ahead coupling
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/12/2016
TSOs final submission
14/12/2016
NRA amendment request
NRA
TSOs amendment deadline
20/11/2018
TSOs amendment final approval
1/03/2018
NRA approval deadline
A 43.4 Review of scheduled exchange methodology
Full Title
Review of scheduled exchange methodology
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/08/2017
A 44 Develop a proposal for robust and timely fallback...
Full Title
Develop a proposal for robust and timely fallback procedures
Responsible
TSOs of CCR (capacity calculation region)
Cluster
Geographical Scope
A 54.1 Support to NEMOs - Develop a proposal on...
Full Title
Support to NEMOs - Develop a proposal on harmonised max and min clearing prices
Responsible
Cluster
Geographical Scope
TSOs proposal deadline
15/02/2017
ACER decision final approval
20/11/2017
A 55.3 Develop a proposal for methodology for Pricing Intraday...
Full Title
Develop a proposal for methodology for Pricing Intraday cross zonal Capacity
Responsible
All TSOs
Cluster
Geographical Scope
Explanatory Document
TSOs proposal deadline
15/08/2017
TSOs final submission
14/08/2017
NRA approval deadline
14/02/2018
NRA final approval
14/08/2018
NRA Escalation to ACER
24/07/2018
ACER decision deadline
24/01/2019
ACER decision final approval
24/01/2019
A 56.1 Develop methodology for calculating scheduled exchanges resulting from...
Full Title
Develop methodology for calculating scheduled exchanges resulting from single intraday coupling
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/12/2016
TSOs final submission
14/12/2016
NRA amendment request
NRA
TSOs amendment deadline
1/12/2018
TSOs amendment final approval
1/03/2018
NRA approval deadline
A 59.1 Develop a proposal for the Intraday Cross Zonal...
Full Title
Develop a proposal for the Intraday Cross Zonal Gate Opening and Closure time
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/12/2016
TSOs final submission
14/12/2016
TSOs amendment final approval
28/08/2017
NRA approval deadline
ACER decision final approval
28/04/2018
A 63 develop a proposal for the design and implementation...
Full Title
develop a proposal for the design and implementation of complementary regional intraday auctions
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/02/2017
A 69 Develop a proposal for the Day Ahead Firmness...
Full Title
Develop a proposal for the Day Ahead Firmness Deadline
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/12/2016
TSOs final submission
13/12/2016
NRA final approval
15/05/2017
A 73 Develop a proposal for a methodology for sharing...
Full Title
Develop a proposal for a methodology for sharing congestion income distribution
Responsible
All TSOs
Cluster
Geographical Scope
TSOs proposal deadline
15/08/2016
TSOs final submission
12/08/2016
TSOs amendment final approval
21/04/2017
NRA approval deadline
ACER decision final approval
14/12/2017
Full Title
Responsible
Cluster
Geographical Scope

European Stakeholder Committee

History & Development of the network code

View network code development information

Below you will find the Frequently asked questions relating to the network code Capacity Alloc. & Congestion Management.

CACM sets out the methods for allocating capacity in day-ahead and intra-day timescales and outlines the way in which capacity will be calculated across the different zones. Putting in place harmonised cross border markets in all timeframes will lead to a more efficient European market and will benefit customers. These rules will provide the basis for the implementation of a single energy market across Europe.

CACM was the second network code to be developed by ENTSO-E and represents an important step in implementing a ‘Target Model’ for the design of European electricity markets. It has been developed through an open and transparent process involving stakeholders at every stage and therefore reflects a broad range of views.

CACM entered into force in August 2015. The entry into force of the CACM guideline marks the start of the formal implementation period, during which Europeans including Member States, ENTSO-E, TSOs, regulators, power exchanges, market participants will collaborate to develop the methodologies and tools described in CACM. Go to the dedicated section for more information on implementation projects and how stakeholders can be involved.

Download the final Capacity Allocation and Congestion Management regulation​​

Background

The network codes and related guidelines have been developed to help realise Europe’s three energy policy goals – of ensuring security of supply; creating a competitive Internal Electricity Market; and decarbonising the electricity sector. For this to happen, the network codes and related guidelines will be implemented and complied with across Europe.

Each code requires a series of steps to be taken before they can enter into force. This could be national decisions, the conclusion of regional agreements or the creation of more detailed methodologies. All market participants, DSOs, TSOs and regulators will be involved and there will be extensive development work and consultation required.

CACM sets out rules for calculating cross-border capacity, defining and reviewing bidding zones and operating day ahead and intraday markets. Many of the subjects included in the CACM are highly complex and there is relatively little operational experience on which to draw from (for example the flow-based method of capacity calculation). For this reason, CACM requires additional work and a series of methodologies to be jointly developed and approved by regulators after the code enters into force.

2015-07-24
Final Commission Regulation establishing a guideline on capacity allocation and congestion management​
2014-12-05
Final draft Commission Regulation establishing a Guideline on CACM
2014-07-29
Preliminary service-level draft sent by DG ENER to the Electricity Cross Border Committee
2013-03-18
ACER’s specific amendments to the CACM Network Code
2013-03-18
​ACER’s recommendation on the CACM Network Code
2013-03-18
​ENTSO-E’s letter to the European Commission
2013-02-08
​ENTSO-E’s response to ACER’s reasoned opinion on CACM
2012-09-27
Final ENTSO-E's Draft CACM Network Code
2011-09-19
EC request for ENTSO-E to start drafting the CACM NC
2011-07-29
​ACER Framework Guidelines on CACM
2011-07-15
​ENTSO-E explanatory note on the CACM development

Events

The tables below will serve as an archive for reference purposes of all previously released material and stakeholder meetings that took place during the development of CACM.

Stakeholder Group Meetings

2012-08-29
View Documents
2012-02-02
View Documents
2011-12-08
View Documents
2011-09-26
View Documents
2011-07-06
View Documents

Public Stakeholder Workshops

2012-07-03
View Documents
2012-05-07
View Documents

For further information on CACM, please contact Marco Foresti​.​

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