2018

2018

Minutes from Roundtable on 19 April 2018

Minutes from Roundtable on 27 November 2018

Agenda for Roundtable meeting on 27 November 2018

2019

2019

Minutes from Roundtable on 27 November 2019

Agenda for Roundtable meeting on 27 November 2019

2020

2020

Minutes from Roundtable on 24 November 2020

Organised market places

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Documentation

REMIT Reporting Guidance

2024

Minutes from the roundtable meeting with AEMPs, OMPs, RRMs and IIPs of 26 November 2024

Minutes from the roundtable meeting with AEMPs, OMPs and RRMs of 29 May 2024

ACER’s presentation: Data reporting obligations upon the entry into force of the revised REMIT

2023

Minutes from roundtable meeting of 16 November 2023

Minutes from joint roundtable meeting with AEMPs, OMPs and RRMs of 15 November 2023

2022

Minutes from Roundtable meeting with OMPs of 16 June 2022

Minutes from Roundtable meeting with OMPs - discussion with brokers of 16 June 2022

Minutes from 2022 Roundtable meeting with OMPs - discussion with exchanges of 16 June 2022

Minutes from Joint Roundtable meeting with AEMPs, OMPs and RRMs of 13 June 2022

2021

Minutes from Roundtable meeting of 16 November 2021

2020

Minutes from Roundtable on 24 November 2020

2019

Minutes from Roundtable on 27 November 2019

Agenda for Roundtable meeting on 27 November 2019

2018

Minutes from Roundtable on 19 April 2018

Minutes from Roundtable on 27 November 2018

Agenda for Roundtable meeting on 27 November 2018

2016

Minutes from Roundtable on 20 July 2016

Agenda for Roundtable meeting on 20 July 2016

Announcement of Roundtable meetings on REMIT implementation in 2016

2015

Minutes from Roundtable on 11 - 12 March 2015

Minutes from Roundtable on 11 - 12 June 2015

Minutes from Roundtable on 20 July 2015

Agenda for Roundtable meeting on 11-12 March 2015

Agenda for Roundtable meeting on 11-12 June 2015

Announcement of Roundtable meetings on REMIT implementation in 2015

2014

Minutes from Roundtable on 18 February 2014

Minutes from Roundtable on 4 April 2014

Minutes from Roundtable on 14-15 May 2014

Minutes from Roundtable on 9 - 10 July 2014

Minutes from Roundtable on 6 November 2014

Agenda for Roundtable meeting on 18 February 2014

Agenda for Roundtable meeting on 4 April 2014

Agenda for Roundtable meeting on 14-15 May 2014

Agenda for Roundtable meeting on 9-10 July 2014

Agenda for Roundtable meeting on 6 November 2014

Announcement for Roundtable meeting on 18 February 2014 and subsequent meetings in 2014

2013

Announcement of first Roundtable meetings in 2013

Other

Other

ACER Opinion 11-2026 on the derogation request submitted by the Spanish National Markets and Competition Authority (CNMC) from the application of the network codes and guidelines

ACER Opinion 10-2026 on the derogation request submitted by the Italian Regulatory Authority for Energy, Networks and Environment (ARERA) from the application of the network codes and guidelines

ACER Opinion 09-2026 on the derogation request submitted by the Slovak Regulatory Office for Network Industries (ÚRSO) from the application of the network codes and guidelines

ACER Opinion 08-2026 on the derogation request submitted by the Estonian Competition Authority (ECA) from the application of the network codes and guidelines

ACER Opinion 07-2026 on the derogation request submitted by the Lithuanian National Energy Regulatory Council (NERC) from the application of the network codes and guidelines

ACER Opinion 06-2026 on the derogation request submitted by the Hungarian Energy and Public Utility Regulatory Authority (MEKH) from the application of the network codes and guidelines

ACER Opinion 05-2026 on the derogation request submitted by the Bulgarian Energy & Water Regulatory Commission (EWRC) from the application of the network codes and guidelines

ACER Opinion 04-2026 on the draft updated statutory documents of the EU DSO entity

ACER Opinion 10-2025 on the 2025 draft regional lists of proposed electricity and hydrogen projects of common interest and projects of mutual interest in trans-European energy infrastructure

ACER Opinion 09-2025 on the transmission system operators’ proposal on the alternative bidding zone configurations

ACER Opinion 02-2025 on the curtailment of financial transmission rights and interpretation of force majeure

ACER Opinion 08-2024 on the reverse flow at the Cieszyn/Český Těšín interconnection point between Poland and the Czech Republic

ACER Opinion 06-2024 on the reverse flow at the Deutschneudorf EUGAL interconnection point

ACER Opinion 09-2023 on the draft regional lists of proposed Hydrogen Projects of Common Interest and Projects of Mutual Interest 2023

ACER Opinion 03-2022 Relating to the Implementation of Long-Term Transmission Rights on the FI-EE Bidding Zone Border

ACER Opinion 08-2021 on the Gas PCI Lists

ACER Opinion 05-2020 on the Statutory Documents on the Establishment of the EU DSO Entity

ACER Opinion 22-2019 on the Calculation Values of CO2 Emission Limits

ACER Opinion 19-2019 on Gas PCI List

ACER Opinion 18-2019 on Electricity PCI List

ACER Opinion 03-2018 on the Application of Articles 5 and 141-2 of the Commission Regulation Establishing a Guideline on Electricity Transmission System Operation

ACER Opinion 20-2017 on CNMC Request Under Article 7(6)

ACER Opinion 16-2017 on the ENTSO-E Forward Capacity Allocation

ACER Opinion 14-2017 on the Draft Regional Lists of Proposed Electricity Projects of Common Interest 2017

ACER Opinion 13-2017 on the Draft Regional Lists of Proposed Gas Projects of Common Interest 2017

ACER Opinion 10-2017 on the Application of Article 30(2) of Commission Regulation (EU) 2016-1719

Coordinated-ACER Opinion 14-2015 on the Draft Regional Lists of Proposed Electricity PCIs 2015

ACER Opinion 15-2015 on the Draft Regional Lists of Proposed Gas PCIs 2015

ACER Opinion 22-2014 on the Implementation of the Investments in Gas Network Development Plans

ACER Opinion 16-2014 on the Implementation of Investments in Electricity Transmission Networks

ACER Opinion 09-2014 on the Appropriate Range of Transmission Charges Paid by Electricity Producers

ACER Opinion 16-2013 on the Draft Regional Lists of Proposed Electricity PCIs 2013

ACER Opinion 15-2013 on the Draft Regional Lists of Proposed Gas PCIs 2013

ACER Opinion 09-2013 on Gas Regional Investment Plans 2011(12)-2020(21)

ACER Opinion 07-2013 on the Suitability of Long Run Average Incremental Costs for the Assessment of Inter-Transmission System Operator Compensation

NRA decisions

NRA decisions

ACER Opinion 03-2026 on the certification of Gaz-System as a hydrogen transmission network operator

ACER Opinion 02-2022 on SI-AT Reverse Flow

ACER Opinion 01-2022 on HU-AT Reverse Flow

ACER Opinion 04-2020 on Reverse flow DE-CZ

ACER Opinion 09-2015 on the Compliance of NRAs’ Decisions Approving Methods of Cross-Border Capacity Allocation in the CEE Region

ACER Opinion 03-2015 on the Compliance of the Decision of National Commission for Energy Control and Prices of the Republic of Lithuania

Other ENTSOs Documents

Other ENTSOs Documents

ACER Opinion 02-2026 on ENTSOG's Winter Supply Outlook 2025/26

ACER Opinion 06-2025 on ENTSOG's Summer Supply Outlook 2025

ACER Opinion 05-2025 on ENTSOG's hydrogen Infrastructure Gaps Identification report 2024

ACER Opinion 04-2025 on ENTSO-E's 2024 draft TYNDP and Infrastructure Gaps Identification report 2024

ACER Opinion 09-2024 on ENTSOG’s Winter Supply Outlook 2024/25

ACER Opinion 05-2024 on ENTSO-E and ENTSOG Scenarios for TYNDP 2024 and Guidelines

ACER Opinion 03-2024 on ENTSOG Summer Supply Outlook 2024

ACER Opinion 01-2024 on the amended third update of the manual of procedures for the ENTSO-E central information transparency platform

ACER Opinion 11-2023 on ENTSOG’s Winter Supply Outlook 2023-2024

ACER Opinion 08-2023 on the draft ENTSOG cost-benefit analysis methodology of hydrogen infrastructure projects

ACER Opinion 07-2023 on the draft 4th ENTSO-E Guideline for Cost Benefit Analysis of Grid Development Projects

ACER Opinion 06-2023 on ENTSOG draft Ten-Year Network Development Plan 2022

ACER Opinion 05-2023 on ENTSOG’s Summer Supply Outlook 2023

ACER Opinion 04-2023 on electricity projects in the draft ENTSO-E TYNDP 2022 and in the National Development Plans (NDPs)

ACER Opinion 03-2023 on the methodological aspects of the ENTSO-E TYNDP 2022

ACER Opinion 02-2023 on ENTSO-E’s statutory documents

ACER Opinion 01-2023 on the ENTSO-E Winter Outlook 2022-2023

ACER Opinion 08-2022 on the review of gas and hydrogen consistency of national NDPs with EU TYNDP

ACER Opinion 06-2022 on the Key Elements of ENTSO-E and ENTSOG Draft TYNDP 2022 Scenario Report

ACER Opinion 05-2022 on ENTSOG's Summer Supply Outlook 2022

ACER Opinion 04-2022 on ENTSO-E’s Research, Development and Innovation Implementation Report 2021-2025

ACER Opinion 11-2021 on ENTSOG’s Winter Supply Outlook 2021-2022

ACER Opinion 10-2021 on the Third Update of the Manual of Procedures for the ENTSO-E Central Information Transparency Platform

ACER Opinion 07-2021 on the ENTSO-E Summer Outlook 2021 and Winter Review 2020-2021

ACER Opinion 06-2021 on ENTSOG’s Summer Supply Outlook 2021

ACER Opinion 04-2021 on the Electricity Projects in the Draft ENTSO-E TYNDP 2020

ACER Opinion 03-2021 on the Methodological Aspects of the ENTSO-E Draft TYNDP 2020

ACER Opinion 02-2021 on the ENTSOG Draft Ten-Year Network Development Plan 2020

ACER Opinion 01-2021 on ENTSO-E Winter Outlook 2020-21 and Summer Review 2020

ACER Opinion 09-2020 on the Consistency of Gas National Development Plans with EU TYNDP

ACER Opinion 09-2020 on National Development Plans_EU TYNDP - Annexes I and II

ACER Opinion 08-2020 on ENTSOG's Annual Work Programme 2021

ACER Opinion 07-2020 on the ENTSO-E Summer Outlook and Winter Review 2019-2020 Report

ACER Opinion 06-2020 on the ENTSO-E and ENTSOG Draft TYNDP 2020 Scenario Report

ACER Opinion 03-2020 on ENTSO-E Guideline for Cost-Benefit Analysis

ACER Opinion 02-2020 on the ENTSO-E Winter Outlook and Summer Review 2019-2020

ACER Opinion 01-2020 on the Draft ENTSO-E Annual Work Programme 2020

ACER Opinion 21-2019 on ENTSOG's Draft Annual Work Programme for 2020

ACER Opinion 20-2019 on the ENTSOG's Annual Report 2018

ACER Opinion 17-2019 on the ENTSO-E Summer Outlook Report 2019 and Winter Review 2018-2019

ACER Opinion 16-2019 on ENTSOG's Summer Supply Outlook 2019

ACER Opinion 15-2019 on the ENTSO-E Annual Report 2018

ACER Opinion 14-2019 on the ENTSOG Draft TYNDP 2018

ACER Opinion 13-2019 on National Electricity TYNDP-National Development Plans Consistency

ACER Opinion 12-2019 on the ENTSO-E Balancing Monitoring Plan

ACER Opinion 11-2019 on the ENTSO-E Draft Ten-Year Network Development Plan 2018

ACER Opinion 10-2019 on ENTSOG's Recommendations to Third-Country TSOs

ACER Opinion 09-2019 on ENTSOG's Common Network Operation Tools

ACER Opinion 08-2019 on Amended Manual of Procedures for ENTSO-E Central Information Transparency Platform

ACER Opinion 07-2019 on ENTSO-E Winter Outlook Report 2018-19 and Summer Review 2018

ACER Opinion 06-2019 on the Implementation of the EU Electricity TYNDP

ACER Opinion 05-2019 on the Implementation of the EU Gas TYNDP

ACER Opinion 04-2019 on ENTSO-E Updated Common Incident Classification Scale

ACER Opinion 03-2019 on ENTSOG's Winter Supply Outlook 2018-2019

ACER Opinion 02-2019 on ENTSOG's Draft Annual Work Programme 2019

ACER Opinion 01-2019 on Draft ENTSO-E Annual Work Programme 2019

ACER Opinion 12-2018 on the Amendments to ENTSO-E FCA Monitoring Plan

ACER Opinion 11-2018 on the Review of National Development Plans Consistency with EU TYNDP

ACER Opinion 10-2018 on the ENTSO-E and ENTSOG Draft TYNDP 2018 Scenario Report

ACER Opinion 09-2018 on the ENTSO-E Annual Report 2017

ACER Opinion 08-2018 on the ENTSO-E Summer Outlook Report 2018 and Winter Review 2017-2018

ACER Opinion 07-2018 on the ENTSOG Annual Report 2017

ACER Opinion 06-2018 on Template for Main Terms & Conditions for Bundled Capacity Products - Gas

ACER Opinion 05-2018 on ENTSOG's Summer Supply Outlook 2018

ACER Opinion 04-2018 on the Second Update of the Manual of Procedures for the ENTSO-E Central Information Transparency Platform

ACER Opinion 02-2018 on Swiss Participation in EB platforms

ACER Opinion 01-2018 on ENTSO-E Winter Outlook Report 2017-18 and Summer Review 2017

ACER Opinion 24-2017 on ENTSOG's Winter Supply Outlook 2017-2018

ACER Opinion 23-2017 on the Draft ENTSO-E Annual Work Programme 2018

ACER Opinion 22-2017 on ENTSO-E's TYNDP Guidelines 2018

ACER Opinion 21-2017 on ENTSOG's 2018 Draft Annual Work Programme

ACER Opinion 19-2017 on the ENTSO-E Research and Innovation Implementation Plan 2017-2019

ACER Opinion 18-2017 on the ENTSOG Annual Report 2016

ACER Opinion 17-2017 on the ENTSO-E Summer Outlook Report 2017 and Winter Review 2016-2017

ACER Opinion 15-2017 on the Draft 2nd ENTSOG Cost-Benefit Analysis Methodology

ACER Opinion 12-2017 on the ENTSO-E Annual Report 2016

ACER Opinion 11-2017 on ENTSOG's Summer Supply Outlook 2017

ACER Opinion 09-2017 on ENTSO-E's Recommendations on Technical Cooperation for Third-Country TSOs

ACER Opinion 08-2017 on Electricity Projects in National Development Plans and EU TYNDP 2016

ACER Opinion 07-2017 on ENTSOS' Draft Consistent and Interlinked Electricity and Gas Market and Network Model

ACER Opinion 06-2017 on the ENTSOG Draft TYNDP 2017

ACER Opinion 05-2017 on the Draft ENTSO-E Guideline for Cost-Benefit Analysis of Grid Development Projects

ACER Opinion 04-2017 on the Adoption of Common Network Operation Tools by ENTSOG

ACER Opinion 03-2017 on the ENTSO-E Winter Outlook Report 2016/2017 and Summer Review 2016

ACER Opinion 02-2017 on the First Update of the Manual of Procedures for the ENTSO-E Central Information Transparency Platform

ACER Opinion 01-2017 on the ENTSO-E Draft TYNDP 2016

ACER Opinion 16-2016 on ENTSOG's Winter Supply Outlook 2016-17

ACER Opinion 15-2016 on the Draft ENTSO-E Work Programme 2016 through December 2017

ACER Opinion 14-2016 on Gas Network Developments: Review of National Development Plans to Assess Their Consistency with the EU Ten-Year Network Development Plan and Monitoring of the Implementation of the EU Ten-Year Network Development Plan and Investmen

ACER Opinion 13-2016 on ENTSOG's 2017 Draft Annual Work Programme

ACER Opinion 12-2016 on the ENTSO-E Draft TYNDP 2016 Scenario Development Report

ACER Opinion 11-2016 on the ENTSO-E Research and Innovation Roadmap 2017-2026

ACER Opinion 10-2016 on the ENTSO-E Summer Outlook Report 2016 and Winter Review 2015-2016

ACER Opinion 09-2016 on ENTSOG's Annual Report 2015

ACER Opinion 08-2016 on TYNDP Implementation

ACER Opinion 07-2016 on ENTSOG's Summer Supply Outlook 2016

ACER Opinion 06-2016 on the ENTSO-E Annual Report 2015

ACER Opinion 05-2016 on the ENTSO-E Monitoring Plan

ACER Opinion 04-2016 on the National Ten-Year Electricity Network Development Plan

ACER Opinion 03-2016 on ENTSO-E Recommendations on Cooperation EU and Third-Country TSOs

ACER Opinion 02-2016 on ENTSO-E Network Operation Tools Report

ACER Opinion 01-2016 on ENTSO-E Winter Outlook Report 2015-16 and Summer Review 2015

ACER Opinion 18-2015 on ENTSOG Winter Supply Outlook 2015-16

ACER Opinion 17-2015 on the Draft ENTSO-E Work Programme 2015 Through December 2016

ACER Opinion 16-2015 on ENTSOG’s 2016 Draft Annual Work Programme

ACER Opinion 13-2015 on the ENTSOG Draft Interconnection Agreement Template of Default

ACER Opinion 12-2015 on the ENTSO-E Annual Report 2014

ACER Opinion 11-2015 on the Draft Ten-Year Network Development Plan 2015 Submitted by ENTSOG

ACER Opinion 10-2015 on the ENTSO-E Summer Outlook Report 2015 & Winter Review 2014-2015

ACER Opinion 08-2015 on the Annual Report 2014 of ENTSOG

ACER Opinion 07-2015 on ENTSOG's Summer Supply Outlook 2015

ACER Opinion 06-2015 on the ENTSO-E Research & Development Roadmap 2013-2022

ACER Opinion 05-2015 on the ENTSO-E Winter Outlook Report 2014-15 - Summer Review 2014

ACER Opinion 01-2015 on the ENTSO-E Draft Ten-Year Network Development Plan 2014

ACER Opinion 21-2014 on the Draft ENTSO-E Scenario Outlook & Adequacy Forecast 2014-2030

ACER Opinion 20-2014 on the Draft ENTSO-E Work Programme 2014-2015

ACER Opinion 19-2014 on ENTSOG's Winter Supply Outlook 2014-15

ACER Opinion 18-2014 on ENTSOG's 2015 Annual Work Programme

ACER Opinion 17-2014 on the ENTSO-E Incidents Classification Scale - Methodology 2014

ACER Opinion 15-2014 on the ENTSO-E Summer Outlook Report 2014 and Winter Review 2013-2014

ACER Opinion 13-2014 on ENTSOG's Summer Supply Outlook 2014

ACER Opinion 12-2014 on the ENTSO-E Annual Report 2013

ACER Opinion 11-2014 on ENTSO-E Research & Development Implementation Plan 2015-2017

ACER Opinion 10-2014 on the Annual Report 2013 of ENTSOG

ACER Opinion 08-2014 on the National Ten-Year Electricity Network Development Plans

ACER Opinion 07-2014 on ENTSO-E Network Code on Electricity Balancing

ACER Opinion 06-2014 on the ENTSOG Amendments to the Statutes of the Association

ACER Opinion 05-2014 on the ENTSO-E Winter Outlook Report 2013-14 and Summer Review 2013

ACER Opinion 04-2014 on the ENTSOG Cost-Benefit Analysis Methodology

ACER Opinion 03-2014 on the Proposal for Operation of the ENTSO-E Central Information Transparency Platform

ACER Opinion 02-2014 on ENTSOG's Winter Supply Outlook 2013-14

ACER Opinion 01-2014 on the ENTSO-E Guideline for Cost-Benefit Analysis of Grid Development Projects

ACER Opinion 26-2013 on the ENTSO-E Manual of Procedures (Transparency Platform)

ACER Opinion 25-2013 on the Draft ENTSO-E Work Programme 2014

ACER Opinion 24-2013 on ENTSO-E's Network Code on Forward Capacity Allocation

ACER Opinion 23-2013 on ENTSOG's 2014 Annual Work Programme

ACER Opinion 22-2013 on ENTSO-E Summer Outlook Report 2013 and Winter Review 2012-2013

ACER Opinion 20-2013 on a Harmonised Format for Data Publication by ENTSOG and TSOs

ACER Opinion 19-2013 on the Network Code on Load-Frequency Control and Reserves

ACER Opinion 18-2013 on ENTSOG's Draft Community-Wide TYNDP 2013-2022

ACER Opinion 17-2013 on the ENTSO-E Annual Report 2012

ACER Opinion 14-2013 on ENTSOG's 2012 Annual Report

ACER Opinion 13-2013 on ENTSOG's Annual Summer Supply Outlook 2013

ACER Opinion 11-2013 on the ENTSO-E Research & Development Roadmap 2013-2022 and Implementation Plan 2014-2016

ACER Opinion 08-2013 on the ENTSOE Winter Outlook Report 2012-2013 and Summer Review 2012

ACER Opinion 04-2013 on ENTSOG's 2011 Annual Report

ACER Opinion 03-2013 on ENTSOG's Annual Winter Supply Outlook 2012-13

ACER Opinion 02-2013 on the ENTSO-E Draft Annual Work Programme 2012 Through 2013

ACER Opinion 09-2012 on ENTSOG's 2013 Annual Work Programme

ACER Opinion 08-2012 on ENTSO-E's Network Code for Requirements for Grid Connection Applicable to All Generators

ACER Opinion 07-2012 on the ENTSO-E Summer Outlook Report 2012 and Winter Review 2011-2012

ACER Opinion 06-2012 on the ENTSO-E Ten-Year Network Development Plan 2012 including Annex

ACER Opinion 05-2012 on ENTSOG's 2012 Annual Summer Supply Outlook

ACER Opinion 03-2012 on the ENTSO-E Annual Report 2011

ACER Opinion 02-2012 on ENTSOG's 2011-2012 Annual Winter Supply Outlook

ACER Opinion 01-2012 on ENTSOG's 2012 Annual Work Programme

ACER Opinion 03-2011 on ENTSO-E Work Programme 2011-2012

ACER Opinion on the European Ten Year Network Development Plan 2011-2020 Published by ENTSOG

ACER Opinion 02-2011 on the ENTSOG Statutes Rules of Procedure and List of Members

ACER Opinion 01-2011 on the ENTSO-E Statutes Rules of Procedure and List of Members

ACER 05-2025 on ENTSOG's hydrogen Infrastructure Gaps Identification report 2024

Published on 5 June 2025

Draft Network Codes

Draft Network Codes

ACER Opinion 02-2015 on the Network Code on Harmonised Transmission Tariff Structures for Gas

ACER Opinion 14-2014 on the Network Code on High Voltage Direct Current Connections and DC-Connected Power Park Modules

ACER Opinion 04-2014 on the ENTSOG Cost-Benefit Analysis Methodology

ACER Opinion 21-2013 on the Network Code on Interoperability and Data Exchange Rules

ACER Opinion 12-2013 on the Network Code on Operational Planning and Scheduling (OPS)

ACER Opinion 10-2013 on the Network Code on Operational Security

ACER Opinion 06-2013 on the Network Code on Demand Connection

ACER Opinion 01-2013 on the Network Code on Gas Balancing of Transmission Networks

ACER Opinion 10-2012 on ENTSO-E's Network Code on Capacity Allocation and Congestion Management

ACER Opinion 04-2012 on the Network Code on CAM for European Gas Transmission Network

ACER Opinion 04-2012 Reasoning on the Network Code on Capacity Allocation Mechanisms for the European gas transmission network

ACER Reasoned Opinion 04-2012 Consultants Study - Final Report

Opinions

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Other ENTSOs Documents

ACER Opinion 02-2026 on ENTSOG's Winter Supply Outlook 2025/26

ACER Opinion 06-2025 on ENTSOG's Summer Supply Outlook 2025

ACER Opinion 05-2025 on ENTSOG's hydrogen Infrastructure Gaps Identification report 2024

ACER Opinion 04-2025 on ENTSO-E's 2024 draft TYNDP and Infrastructure Gaps Identification report 2024

ACER Opinion 09-2024 on ENTSOG’s Winter Supply Outlook 2024/25

ACER Opinion 05-2024 on ENTSO-E and ENTSOG Scenarios for TYNDP 2024 and Guidelines

ACER Opinion 03-2024 on ENTSOG Summer Supply Outlook 2024

ACER Opinion 01-2024 on the amended third update of the manual of procedures for the ENTSO-E central information transparency platform

ACER Opinion 11-2023 on ENTSOG’s Winter Supply Outlook 2023-2024

ACER Opinion 08-2023 on the draft ENTSOG cost-benefit analysis methodology of hydrogen infrastructure projects

ACER Opinion 07-2023 on the draft 4th ENTSO-E Guideline for Cost Benefit Analysis of Grid Development Projects

ACER Opinion 06-2023 on ENTSOG draft Ten-Year Network Development Plan 2022

ACER Opinion 05-2023 on ENTSOG’s Summer Supply Outlook 2023

ACER Opinion 04-2023 on electricity projects in the draft ENTSO-E TYNDP 2022 and in the National Development Plans (NDPs)

ACER Opinion 03-2023 on the methodological aspects of the ENTSO-E TYNDP 2022

ACER Opinion 02-2023 on ENTSO-E’s statutory documents

ACER Opinion 01-2023 on the ENTSO-E Winter Outlook 2022-2023

ACER Opinion 08-2022 on the review of gas and hydrogen consistency of national NDPs with EU TYNDP

ACER Opinion 06-2022 on the Key Elements of ENTSO-E and ENTSOG Draft TYNDP 2022 Scenario Report

ACER Opinion 05-2022 on ENTSOG's Summer Supply Outlook 2022

ACER Opinion 04-2022 on ENTSO-E’s Research, Development and Innovation Implementation Report 2021-2025

ACER Opinion 11-2021 on ENTSOG’s Winter Supply Outlook 2021-2022

ACER Opinion 10-2021 on the Third Update of the Manual of Procedures for the ENTSO-E Central Information Transparency Platform

ACER Opinion 07-2021 on the ENTSO-E Summer Outlook 2021 and Winter Review 2020-2021

ACER Opinion 06-2021 on ENTSOG’s Summer Supply Outlook 2021

ACER Opinion 04-2021 on the Electricity Projects in the Draft ENTSO-E TYNDP 2020

ACER Opinion 03-2021 on the Methodological Aspects of the ENTSO-E Draft TYNDP 2020

ACER Opinion 02-2021 on the ENTSOG Draft Ten-Year Network Development Plan 2020

ACER Opinion 01-2021 on ENTSO-E Winter Outlook 2020-21 and Summer Review 2020

ACER Opinion 09-2020 on the Consistency of Gas National Development Plans with EU TYNDP

ACER Opinion 09-2020 on National Development Plans_EU TYNDP - Annexes I and II

ACER Opinion 08-2020 on ENTSOG's Annual Work Programme 2021

ACER Opinion 07-2020 on the ENTSO-E Summer Outlook and Winter Review 2019-2020 Report

ACER Opinion 06-2020 on the ENTSO-E and ENTSOG Draft TYNDP 2020 Scenario Report

ACER Opinion 03-2020 on ENTSO-E Guideline for Cost-Benefit Analysis

ACER Opinion 02-2020 on the ENTSO-E Winter Outlook and Summer Review 2019-2020

ACER Opinion 01-2020 on the Draft ENTSO-E Annual Work Programme 2020

ACER Opinion 21-2019 on ENTSOG's Draft Annual Work Programme for 2020

ACER Opinion 20-2019 on the ENTSOG's Annual Report 2018

ACER Opinion 17-2019 on the ENTSO-E Summer Outlook Report 2019 and Winter Review 2018-2019

ACER Opinion 16-2019 on ENTSOG's Summer Supply Outlook 2019

ACER Opinion 15-2019 on the ENTSO-E Annual Report 2018

ACER Opinion 14-2019 on the ENTSOG Draft TYNDP 2018

ACER Opinion 13-2019 on National Electricity TYNDP-National Development Plans Consistency

ACER Opinion 12-2019 on the ENTSO-E Balancing Monitoring Plan

ACER Opinion 11-2019 on the ENTSO-E Draft Ten-Year Network Development Plan 2018

ACER Opinion 10-2019 on ENTSOG's Recommendations to Third-Country TSOs

ACER Opinion 09-2019 on ENTSOG's Common Network Operation Tools

ACER Opinion 08-2019 on Amended Manual of Procedures for ENTSO-E Central Information Transparency Platform

ACER Opinion 07-2019 on ENTSO-E Winter Outlook Report 2018-19 and Summer Review 2018

ACER Opinion 06-2019 on the Implementation of the EU Electricity TYNDP

ACER Opinion 05-2019 on the Implementation of the EU Gas TYNDP

ACER Opinion 04-2019 on ENTSO-E Updated Common Incident Classification Scale

ACER Opinion 03-2019 on ENTSOG's Winter Supply Outlook 2018-2019

ACER Opinion 02-2019 on ENTSOG's Draft Annual Work Programme 2019

ACER Opinion 01-2019 on Draft ENTSO-E Annual Work Programme 2019

ACER Opinion 12-2018 on the Amendments to ENTSO-E FCA Monitoring Plan

ACER Opinion 11-2018 on the Review of National Development Plans Consistency with EU TYNDP

ACER Opinion 10-2018 on the ENTSO-E and ENTSOG Draft TYNDP 2018 Scenario Report

ACER Opinion 09-2018 on the ENTSO-E Annual Report 2017

ACER Opinion 08-2018 on the ENTSO-E Summer Outlook Report 2018 and Winter Review 2017-2018

ACER Opinion 07-2018 on the ENTSOG Annual Report 2017

ACER Opinion 06-2018 on Template for Main Terms & Conditions for Bundled Capacity Products - Gas

ACER Opinion 05-2018 on ENTSOG's Summer Supply Outlook 2018

ACER Opinion 04-2018 on the Second Update of the Manual of Procedures for the ENTSO-E Central Information Transparency Platform

ACER Opinion 02-2018 on Swiss Participation in EB platforms

ACER Opinion 01-2018 on ENTSO-E Winter Outlook Report 2017-18 and Summer Review 2017

ACER Opinion 24-2017 on ENTSOG's Winter Supply Outlook 2017-2018

ACER Opinion 23-2017 on the Draft ENTSO-E Annual Work Programme 2018

ACER Opinion 22-2017 on ENTSO-E's TYNDP Guidelines 2018

ACER Opinion 21-2017 on ENTSOG's 2018 Draft Annual Work Programme

ACER Opinion 19-2017 on the ENTSO-E Research and Innovation Implementation Plan 2017-2019

ACER Opinion 18-2017 on the ENTSOG Annual Report 2016

ACER Opinion 17-2017 on the ENTSO-E Summer Outlook Report 2017 and Winter Review 2016-2017

ACER Opinion 15-2017 on the Draft 2nd ENTSOG Cost-Benefit Analysis Methodology

ACER Opinion 12-2017 on the ENTSO-E Annual Report 2016

ACER Opinion 11-2017 on ENTSOG's Summer Supply Outlook 2017

ACER Opinion 09-2017 on ENTSO-E's Recommendations on Technical Cooperation for Third-Country TSOs

ACER Opinion 08-2017 on Electricity Projects in National Development Plans and EU TYNDP 2016

ACER Opinion 07-2017 on ENTSOS' Draft Consistent and Interlinked Electricity and Gas Market and Network Model

ACER Opinion 06-2017 on the ENTSOG Draft TYNDP 2017

ACER Opinion 05-2017 on the Draft ENTSO-E Guideline for Cost-Benefit Analysis of Grid Development Projects

ACER Opinion 04-2017 on the Adoption of Common Network Operation Tools by ENTSOG

ACER Opinion 03-2017 on the ENTSO-E Winter Outlook Report 2016/2017 and Summer Review 2016

ACER Opinion 02-2017 on the First Update of the Manual of Procedures for the ENTSO-E Central Information Transparency Platform

ACER Opinion 01-2017 on the ENTSO-E Draft TYNDP 2016

ACER Opinion 16-2016 on ENTSOG's Winter Supply Outlook 2016-17

ACER Opinion 15-2016 on the Draft ENTSO-E Work Programme 2016 through December 2017

ACER Opinion 14-2016 on Gas Network Developments: Review of National Development Plans to Assess Their Consistency with the EU Ten-Year Network Development Plan and Monitoring of the Implementation of the EU Ten-Year Network Development Plan and Investmen

ACER Opinion 13-2016 on ENTSOG's 2017 Draft Annual Work Programme

ACER Opinion 12-2016 on the ENTSO-E Draft TYNDP 2016 Scenario Development Report

ACER Opinion 11-2016 on the ENTSO-E Research and Innovation Roadmap 2017-2026

ACER Opinion 10-2016 on the ENTSO-E Summer Outlook Report 2016 and Winter Review 2015-2016

ACER Opinion 09-2016 on ENTSOG's Annual Report 2015

ACER Opinion 08-2016 on TYNDP Implementation

ACER Opinion 07-2016 on ENTSOG's Summer Supply Outlook 2016

ACER Opinion 06-2016 on the ENTSO-E Annual Report 2015

ACER Opinion 05-2016 on the ENTSO-E Monitoring Plan

ACER Opinion 04-2016 on the National Ten-Year Electricity Network Development Plan

ACER Opinion 03-2016 on ENTSO-E Recommendations on Cooperation EU and Third-Country TSOs

ACER Opinion 02-2016 on ENTSO-E Network Operation Tools Report

ACER Opinion 01-2016 on ENTSO-E Winter Outlook Report 2015-16 and Summer Review 2015

ACER Opinion 18-2015 on ENTSOG Winter Supply Outlook 2015-16

ACER Opinion 17-2015 on the Draft ENTSO-E Work Programme 2015 Through December 2016

ACER Opinion 16-2015 on ENTSOG’s 2016 Draft Annual Work Programme

ACER Opinion 13-2015 on the ENTSOG Draft Interconnection Agreement Template of Default

ACER Opinion 12-2015 on the ENTSO-E Annual Report 2014

ACER Opinion 11-2015 on the Draft Ten-Year Network Development Plan 2015 Submitted by ENTSOG

ACER Opinion 10-2015 on the ENTSO-E Summer Outlook Report 2015 & Winter Review 2014-2015

ACER Opinion 08-2015 on the Annual Report 2014 of ENTSOG

ACER Opinion 07-2015 on ENTSOG's Summer Supply Outlook 2015

ACER Opinion 06-2015 on the ENTSO-E Research & Development Roadmap 2013-2022

ACER Opinion 05-2015 on the ENTSO-E Winter Outlook Report 2014-15 - Summer Review 2014

ACER Opinion 01-2015 on the ENTSO-E Draft Ten-Year Network Development Plan 2014

ACER Opinion 21-2014 on the Draft ENTSO-E Scenario Outlook & Adequacy Forecast 2014-2030

ACER Opinion 20-2014 on the Draft ENTSO-E Work Programme 2014-2015

ACER Opinion 19-2014 on ENTSOG's Winter Supply Outlook 2014-15

ACER Opinion 18-2014 on ENTSOG's 2015 Annual Work Programme

ACER Opinion 17-2014 on the ENTSO-E Incidents Classification Scale - Methodology 2014

ACER Opinion 15-2014 on the ENTSO-E Summer Outlook Report 2014 and Winter Review 2013-2014

ACER Opinion 13-2014 on ENTSOG's Summer Supply Outlook 2014

ACER Opinion 12-2014 on the ENTSO-E Annual Report 2013

ACER Opinion 11-2014 on ENTSO-E Research & Development Implementation Plan 2015-2017

ACER Opinion 10-2014 on the Annual Report 2013 of ENTSOG

ACER Opinion 08-2014 on the National Ten-Year Electricity Network Development Plans

ACER Opinion 07-2014 on ENTSO-E Network Code on Electricity Balancing

ACER Opinion 06-2014 on the ENTSOG Amendments to the Statutes of the Association

ACER Opinion 05-2014 on the ENTSO-E Winter Outlook Report 2013-14 and Summer Review 2013

ACER Opinion 04-2014 on the ENTSOG Cost-Benefit Analysis Methodology

ACER Opinion 03-2014 on the Proposal for Operation of the ENTSO-E Central Information Transparency Platform

ACER Opinion 02-2014 on ENTSOG's Winter Supply Outlook 2013-14

ACER Opinion 01-2014 on the ENTSO-E Guideline for Cost-Benefit Analysis of Grid Development Projects

ACER Opinion 26-2013 on the ENTSO-E Manual of Procedures (Transparency Platform)

ACER Opinion 25-2013 on the Draft ENTSO-E Work Programme 2014

ACER Opinion 24-2013 on ENTSO-E's Network Code on Forward Capacity Allocation

ACER Opinion 23-2013 on ENTSOG's 2014 Annual Work Programme

ACER Opinion 22-2013 on ENTSO-E Summer Outlook Report 2013 and Winter Review 2012-2013

ACER Opinion 20-2013 on a Harmonised Format for Data Publication by ENTSOG and TSOs

ACER Opinion 19-2013 on the Network Code on Load-Frequency Control and Reserves

ACER Opinion 18-2013 on ENTSOG's Draft Community-Wide TYNDP 2013-2022

ACER Opinion 17-2013 on the ENTSO-E Annual Report 2012

ACER Opinion 14-2013 on ENTSOG's 2012 Annual Report

ACER Opinion 13-2013 on ENTSOG's Annual Summer Supply Outlook 2013

ACER Opinion 11-2013 on the ENTSO-E Research & Development Roadmap 2013-2022 and Implementation Plan 2014-2016

ACER Opinion 08-2013 on the ENTSOE Winter Outlook Report 2012-2013 and Summer Review 2012

ACER Opinion 04-2013 on ENTSOG's 2011 Annual Report

ACER Opinion 03-2013 on ENTSOG's Annual Winter Supply Outlook 2012-13

ACER Opinion 02-2013 on the ENTSO-E Draft Annual Work Programme 2012 Through 2013

ACER Opinion 09-2012 on ENTSOG's 2013 Annual Work Programme

ACER Opinion 08-2012 on ENTSO-E's Network Code for Requirements for Grid Connection Applicable to All Generators

ACER Opinion 07-2012 on the ENTSO-E Summer Outlook Report 2012 and Winter Review 2011-2012

ACER Opinion 06-2012 on the ENTSO-E Ten-Year Network Development Plan 2012 including Annex

ACER Opinion 05-2012 on ENTSOG's 2012 Annual Summer Supply Outlook

ACER Opinion 03-2012 on the ENTSO-E Annual Report 2011

ACER Opinion 02-2012 on ENTSOG's 2011-2012 Annual Winter Supply Outlook

ACER Opinion 01-2012 on ENTSOG's 2012 Annual Work Programme

ACER Opinion 03-2011 on ENTSO-E Work Programme 2011-2012

ACER Opinion on the European Ten Year Network Development Plan 2011-2020 Published by ENTSOG

ACER Opinion 02-2011 on the ENTSOG Statutes Rules of Procedure and List of Members

ACER Opinion 01-2011 on the ENTSO-E Statutes Rules of Procedure and List of Members

ACER 05-2025 on ENTSOG's hydrogen Infrastructure Gaps Identification report 2024

Published on 5 June 2025

Draft Network Codes

ACER Opinion 02-2015 on the Network Code on Harmonised Transmission Tariff Structures for Gas

ACER Opinion 14-2014 on the Network Code on High Voltage Direct Current Connections and DC-Connected Power Park Modules

ACER Opinion 04-2014 on the ENTSOG Cost-Benefit Analysis Methodology

ACER Opinion 21-2013 on the Network Code on Interoperability and Data Exchange Rules

ACER Opinion 12-2013 on the Network Code on Operational Planning and Scheduling (OPS)

ACER Opinion 10-2013 on the Network Code on Operational Security

ACER Opinion 06-2013 on the Network Code on Demand Connection

ACER Opinion 01-2013 on the Network Code on Gas Balancing of Transmission Networks

ACER Opinion 10-2012 on ENTSO-E's Network Code on Capacity Allocation and Congestion Management

ACER Opinion 04-2012 on the Network Code on CAM for European Gas Transmission Network

ACER Opinion 04-2012 Reasoning on the Network Code on Capacity Allocation Mechanisms for the European gas transmission network

ACER Reasoned Opinion 04-2012 Consultants Study - Final Report

NRA decisions

ACER Opinion 03-2026 on the certification of Gaz-System as a hydrogen transmission network operator

ACER Opinion 02-2022 on SI-AT Reverse Flow

ACER Opinion 01-2022 on HU-AT Reverse Flow

ACER Opinion 04-2020 on Reverse flow DE-CZ

ACER Opinion 09-2015 on the Compliance of NRAs’ Decisions Approving Methods of Cross-Border Capacity Allocation in the CEE Region

ACER Opinion 03-2015 on the Compliance of the Decision of National Commission for Energy Control and Prices of the Republic of Lithuania

National Resource Adequacy Assessments

ACER Opinion 12-2026 on All-Island Resource Adequacy Assessment: Ireland and Northern Ireland

ACER Opinion 12-2025 on the French National Resource Adequacy Assessment

ACER Opinion 11-2025 on the Spanish National Resource Adequacy Assessment

ACER Opinion 01-2025 on the Polish National Resource Adequacy Assessment

ACER Opinion 04-2024 on the Estonian National Resource Adequacy Assessment

Other

ACER Opinion 11-2026 on the derogation request submitted by the Spanish National Markets and Competition Authority (CNMC) from the application of the network codes and guidelines

ACER Opinion 10-2026 on the derogation request submitted by the Italian Regulatory Authority for Energy, Networks and Environment (ARERA) from the application of the network codes and guidelines

ACER Opinion 09-2026 on the derogation request submitted by the Slovak Regulatory Office for Network Industries (ÚRSO) from the application of the network codes and guidelines

ACER Opinion 08-2026 on the derogation request submitted by the Estonian Competition Authority (ECA) from the application of the network codes and guidelines

ACER Opinion 07-2026 on the derogation request submitted by the Lithuanian National Energy Regulatory Council (NERC) from the application of the network codes and guidelines

ACER Opinion 06-2026 on the derogation request submitted by the Hungarian Energy and Public Utility Regulatory Authority (MEKH) from the application of the network codes and guidelines

ACER Opinion 05-2026 on the derogation request submitted by the Bulgarian Energy & Water Regulatory Commission (EWRC) from the application of the network codes and guidelines

ACER Opinion 04-2026 on the draft updated statutory documents of the EU DSO entity

ACER Opinion 10-2025 on the 2025 draft regional lists of proposed electricity and hydrogen projects of common interest and projects of mutual interest in trans-European energy infrastructure

ACER Opinion 09-2025 on the transmission system operators’ proposal on the alternative bidding zone configurations

ACER Opinion 02-2025 on the curtailment of financial transmission rights and interpretation of force majeure

ACER Opinion 08-2024 on the reverse flow at the Cieszyn/Český Těšín interconnection point between Poland and the Czech Republic

ACER Opinion 06-2024 on the reverse flow at the Deutschneudorf EUGAL interconnection point

ACER Opinion 09-2023 on the draft regional lists of proposed Hydrogen Projects of Common Interest and Projects of Mutual Interest 2023

ACER Opinion 03-2022 Relating to the Implementation of Long-Term Transmission Rights on the FI-EE Bidding Zone Border

ACER Opinion 08-2021 on the Gas PCI Lists

ACER Opinion 05-2020 on the Statutory Documents on the Establishment of the EU DSO Entity

ACER Opinion 22-2019 on the Calculation Values of CO2 Emission Limits

ACER Opinion 19-2019 on Gas PCI List

ACER Opinion 18-2019 on Electricity PCI List

ACER Opinion 03-2018 on the Application of Articles 5 and 141-2 of the Commission Regulation Establishing a Guideline on Electricity Transmission System Operation

ACER Opinion 20-2017 on CNMC Request Under Article 7(6)

ACER Opinion 16-2017 on the ENTSO-E Forward Capacity Allocation

ACER Opinion 14-2017 on the Draft Regional Lists of Proposed Electricity Projects of Common Interest 2017

ACER Opinion 13-2017 on the Draft Regional Lists of Proposed Gas Projects of Common Interest 2017

ACER Opinion 10-2017 on the Application of Article 30(2) of Commission Regulation (EU) 2016-1719

Coordinated-ACER Opinion 14-2015 on the Draft Regional Lists of Proposed Electricity PCIs 2015

ACER Opinion 15-2015 on the Draft Regional Lists of Proposed Gas PCIs 2015

ACER Opinion 22-2014 on the Implementation of the Investments in Gas Network Development Plans

ACER Opinion 16-2014 on the Implementation of Investments in Electricity Transmission Networks

ACER Opinion 09-2014 on the Appropriate Range of Transmission Charges Paid by Electricity Producers

ACER Opinion 16-2013 on the Draft Regional Lists of Proposed Electricity PCIs 2013

ACER Opinion 15-2013 on the Draft Regional Lists of Proposed Gas PCIs 2013

ACER Opinion 09-2013 on Gas Regional Investment Plans 2011(12)-2020(21)

ACER Opinion 07-2013 on the Suitability of Long Run Average Incremental Costs for the Assessment of Inter-Transmission System Operator Compensation

2015

2015

Minutes from Roundtable meeting of 12 March 2015

Minutes from Roundtable meeting of 8 July 2015

Agenda for Roundtable meeting of 12 March 2015

Agenda for Roundtable meeting of 8 July 2015

Announcement of Roundtable meetings of REMIT implementation in 2015