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Configure cookies - Any - Draft Network Codes Other ENTSOs Documents NRA decisions National Resource Adequacy Assessments Other 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 03-2025 on the first amendment of ENTSO-E's monitoring plan Annex I to ACER Opinion 03-2025 ACER Opinion 09-2024 on ENTSOG’s Winter Supply Outlook 2024/25 ACER Opinion 07-2024 on the consistency of gas and hydrogen national Network Development Plans with the EU Ten-Year Network Development Plan Annexes I, II, III, IV to ACER Opinion 07-2024 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 05-2021 on the Electricity National Development Plans - rectified Corrigendum to ACER Opinion 05-2021 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 10-2024 on ENNOH's statutory documents Annex I 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 02-2024 on the necessary developments for the fulfilment of the minimum cross-zonal capacity requirements ACER Opinion 02-2024 - Annex I - Evaluation of Responses ACER Opinion 10-2023 on the draft regional lists of proposed Electricity Projects of Common Interest and Projects of Mutual Interest 2023 Annex 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 09-2021 on the Electricity PCI Lists ACER Opinion 09-2021 on the Electricity PCI Lists - Annex V - Draft Regional PCI Lists 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
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 03-2025 on the first amendment of ENTSO-E's monitoring plan Annex I to ACER Opinion 03-2025 ACER Opinion 09-2024 on ENTSOG’s Winter Supply Outlook 2024/25 ACER Opinion 07-2024 on the consistency of gas and hydrogen national Network Development Plans with the EU Ten-Year Network Development Plan Annexes I, II, III, IV to ACER Opinion 07-2024 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 05-2021 on the Electricity National Development Plans - rectified Corrigendum to ACER Opinion 05-2021 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 10-2024 on ENNOH's statutory documents Annex I 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 02-2024 on the necessary developments for the fulfilment of the minimum cross-zonal capacity requirements ACER Opinion 02-2024 - Annex I - Evaluation of Responses ACER Opinion 10-2023 on the draft regional lists of proposed Electricity Projects of Common Interest and Projects of Mutual Interest 2023 Annex 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 09-2021 on the Electricity PCI Lists ACER Opinion 09-2021 on the Electricity PCI Lists - Annex V - Draft Regional PCI Lists 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
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 10-2024 on ENNOH's statutory documents Annex I 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 02-2024 on the necessary developments for the fulfilment of the minimum cross-zonal capacity requirements ACER Opinion 02-2024 - Annex I - Evaluation of Responses ACER Opinion 10-2023 on the draft regional lists of proposed Electricity Projects of Common Interest and Projects of Mutual Interest 2023 Annex 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 09-2021 on the Electricity PCI Lists ACER Opinion 09-2021 on the Electricity PCI Lists - Annex V - Draft Regional PCI Lists 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
