Celtic Interconnector

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This page shows you information on this project's activity, with more recent news first.

September 2019

Following the consultation process on Step 3, which ran from April to June, we have taken time to assess the submissions received.  We have now prepared the following:

Step 3 Consultation Report: Summarising all responses received and issues raised by stakeholders.

Step 3 Consultation Response Document: Answering questions that were raised.

Step 3 Preferred Options Report: Summarising the consultation process and providing an overview of how new information provided by stakeholders has been considered.

Thank you to everyone who participated in the consultation process on Step 3. The feedback provided has been very useful, and will inform the development of the project into the future.


June 2019

Our consultation on Step 3 closed on 10 June. Thank you to everyone who participated. Your feedback is a critical component of the development of the Celtic Interconnector project. 

We are currently assessing the many responses received. On completion of this we will prepare a Consultation Report which will be published on this website. We will then confirm the shortlists for both the landfall location and converter station location zones.

In addition, we are preparing responses to the many questions and requests for further information that we have received. We appreciate your patience while we complete this work and look forward to being able to share the results with you. Thanks again.

April 2019

We have launched an eight-week consultation on the Celtic Interconnector project. All stakeholders and communities are encouraged to submit their feedback by Monday, 10 June 2019.

We are looking for feedback on a shortlist of:

  • three proposed landfall locations on the coast of East Cork.
  • six proposed location zones for a converter station in East Cork.

This is the latest round of consultation on the project. The previous round of consultation finished in 2018 and confirmed East Cork as the most suitable location for the project in Ireland.

The proposed shortlisted landfall locations of Ballinwilling Strand, Redbarn Beach, and Claycastle Beach were selected from a list of five options.

The proposed shortlisted location zones for the converter station are situated in Ballyadam, Leamlara, Knockraha, Pigeon Hill, Kilquane and Ballyvatta in East Cork. They were selected from a list of 14 options.

Each converter station location zone and landfall location was assessed against five criteria; economic, technical, environmental, socioeconomic and deliverability. 

Feedback from the local community is an important part of the decision making process.  You can submit your feedback on the proposed shortlist, or any other element of the project, via our feedback form, by attending public information days (listed below), or by email or in writing. You can also contact us by phone to discuss the project with our team.

If you need further information on how we came to a decision, you can find more information in all of the reports that we have prepared. These detailed reports explain the steps we have taken to arrive at the proposed shortlist.

Lisgoold Community Centre               Tuesday 23 April                                  2 pm – 8 pm

Knockraha Community Centre           Wednesday 24 April                             2 pm – 8 pm

Carrigtwohill Community Centre        Tuesday 30 April                                  6 pm – 9 pm

Midleton Park Hotel                            Wednesday 1 May                               2 pm – 8 pm

Cloyne Parochial Hall                         Thursday 2 May                                   6 pm – 9 pm

Walter Raleigh Hotel, Youghal            Friday 3 May                                       2 pm – 8 pm

Members of the project team will be available at these meetings to provide an update on the project’s development and answer your questions. We look forward to meeting you there.

All stakeholders and communities are encouraged to submit their feedback by Monday, 10 June.

The project is nearing completion of Step 3 of our six-step approach to grid development.  When this phase of consultation has concluded and the stakeholder feedback has been analysed, we will confirm the two shortlists. The shortlisted options will then be subjected to further assessments in order to determine the best performing option for each. 

January 2019

In September 2018 EirGrid submitted an Investment Request to the Commission for Regulation of Utilities in Ireland (CRU for the Celtic Interconnector project.

On the 20th December CRU opened a public consultation on the Celtic Interconnector’s Investment Request. A version of the Investment Request is available on the CRU website alongside CRU’s consultation paper.  Responses to this paper should be sent to electricityinterconnectors@cru.ie by Friday, 15 February 2019.

The Celtic Interconnector project is being jointly developed by EirGrid, the Irish Transmission System Operator, and Réseau de Transport d'Électricité (RTE), the Transmission System Operator in France.   

The project has been designated a European Project of Common Interest (PCI) putting it alongside projects that are considered important in completing the European energy market and helping the EU achieve its energy policy and climate goals.  Because of their strategic importance, PCI projects such as the Celtic Interconnector can benefit from improved regulatory conditions and EU financial assistance from the Connecting Europe Facility (CEF).

The decision by the Commission for Regulation of Utilities to progress the Celtic Interconnector project to stakeholder consultation is welcomed by EirGrid and we encourage all concerned individuals and stakeholders to participate in the consultation process.

November 2018

Members of the Celtic Inteconnector team will be holding community information sessions on the project throughout December at the following locations:

  • Youghal on Monday 3rd December at the Cumann na Daoine Hall from 5pm to 8pm
  • Cloyne on Friday 7th December at the Cloyne Community Hall from 5pm to 8pm

Members of the project team will be available to provide an update on the project’s development and answer your questions. We also want to hear your views on how we can best deliver this project. We look forward to meeting you there.

September 2018

At EirGrid we follow a six step approach to planning the grid. This approach is to facilitate engagement and consultation with our stakeholders and the public which helps us to fully explore all options and to make more informed decisions.

The Celtic Interconnector project is currently at Step 3. Step 2 was completed earlier in 2018 with East Cork being confirmed as the most suitable location for the project in Ireland. As part of this we confirmed a connection point at the existing Knockraha substation and a short list of five landfall locations in East Cork, in addition to a number of feasible converter station location zones in the region.

As part of Step 3, we are now looking to:

  • Narrow down the short list of landfall locations.
  • Confirm a short list of converter station location zones and the technology type for the AC land circuit.

To do this it is important that we hear the views of people living in the local area so that we can consider their input as part of our decision making process.

We will be holding public meetings to discuss the Celtic Interconnector project at:

Glounthaune Church Centre,           Wednesday 26th September,           7.00 pm

Knockraha Community Centre,       Wednesday 26th September,           9.00 pm

Carrigtwohill Community Hall,         Thursday 4th October,                      7.15 pm

Lisgoold Community Hall,               Thursday 4th October,                      9.00 pm

Members of the project team will be available at these meetings to provide an update on the project’s development and answer your questions.

We look forward to meeting you there.

May 2018

On 09 and 10 May 2018, the Celtic Interconnector project team are in Midleton and Youghal, Co Cork to answer questions from the public about the proposed sub-sea electrical link between Ireland and France.

The team are on Main Street in Midleton on 09 May and Market Square in Youghal on 10 May between 10am and 4pm.

February 2018

On 5 February 2018, EirGrid told a meeting of Cork Chamber of Commerce that east Cork is the most suitable location for the Celtic Interconnector. The proposed development will move electricity between Ireland and France.

John Fitzgerald, director of grid development and interconnection, said there will be a full consultation process. "We are very keen to work with local communities on this," he added.

If the project goes ahead, the interconnector would go live in 2025 or 2026.

January 2018

In order to further assess the subsea cable route and landfall options for the Celtic Interconnector, additional studies are needed along the coast of East Cork. EirGrid has submitted an application for a Foreshore License to the Department of Housing, Planning and Local Government in order to carry out these surveys. 

If permission is granted, these surveys will take place on the foreshore, in shallow water, and offshore at Claycastle, Redbarn and Ballinwilling. The surveys are planned to commence in May 2018 and will take approximately one month to complete. Similar licences were granted and survey work undertaken in 2014, 2015, and 2017. 

A copy of the application, the relevant maps, plans, reports and drawings, are available in Garda stations in Youghal, Ballycotton and Midleton, Co Cork. Advertisements featured in the Evening Echo and Irish Examiner on 18 January 2018 announcing the public consultation phase of the Foreshore Licence application. 

This application is available under file reference FS 006811. The documentation is also available on the Department’s website at:  http://www.housing.gov.ie/planning/foreshore/applications/EirGrid-plc-ballinwilling-claycastle-redbarn-beaches. The consultation opens on 18 January 2018 and closes on 16 February 2018.

May 2017

EirGrid and RTE have already completed a joint assessment of the feasibility of the Celtic Interconnector. This assessment considered several factors. These included a detailed suite of marine surveys, marine engineering studies, and a technical assessment. These assessments concluded that there are feasible options for the various onshore elements of the project and a feasible marine route between Ireland and France has been identified. 

Our studies also indicate that at this point the best option for the Celtic Interconnector is to connect to the existing Irish transmission system, via the East Cork area. We are currently inviting any feedback on this and any other element of what we have studied to date. To assist with this we have prepared a Project Update, that provides a short summary of the project, our assessments to date and how to provide feedback.

In July 2016, then French President, François Hollande and An Taoiseach Enda Kenny launched the current Initial Design and Pre-Consultation phase of the Celtic Interconnector.  As part of this phase EirGrid and RTE are undertaking:

  • additional marine surveys in order to provide a clearer picture of routing options for the project
  • consultation activities to get feedback on our plans to date, and in preparation for the statutory consultation and consenting processes
  • further cost benefit analysis to ensure the benefits for France and Ireland are clear and robust
  •  initial preparation for the procurement process.

The Initial Design and Pre-Consultation phase is a continuation of previous studies, and does not represent a commitment to construct the interconnector.  It will involve  initial design work as well as further studies of the marine environment close to the shore, landing points for a subsea cable and connection points to the electricity transmission grid, amongst other studies.

Following a public consultation process, the Department of Housing, Planning, Community and Local Government granted EirGrid a Foreshore License to facilitate a number of marine investigations off the coast of east Cork.  These surveys took place during Autumn 2017. 

On completion of the current phase, EirGrid, RTE and their respective regulators will decide whether to move to the next phase. A final decision to proceed with construction of the interconnector will happen in 2020/21. 

If the project goes ahead, the interconnector would go live in 2025/26. If completed, the Celtic Interconnector would be an important step towards an integrated European grid. It would make electricity supply more secure, sustainable and cost effective. As such, it would directly benefit the economies of Ireland and France.


The Celtic Interconnector is an EU Project of Common Interest (PCI). It has also been double labelled as one of a small group of 25 EU wide projects designated as “Electricity Highways” (e-Highway 2050), all of which added value under five highly contrasting energy scenarios which were developed to provide an array of the possible future evolution of the European power system while meeting the 2050 low carbon economy orientation. In April 2015, we made an application for project funding to the Connecting Europe Facility (CEF). The application was successful and the project was awarded €3.86 million funding in July 2015. This represents 50% of the eligible costs in the feasibility study stage.