Interconnection

East West Interconnector

Transmission grids are often interconnected so that energy can flow from one country to another. This helps provide a safe, secure, reliable and affordable energy supply for everybody. EirGrid Interconnector DAC owns the East West Interconnector linking the electricity grids in Ireland and Great Britain. We sell capacity on the East West Interconnector through auctions.

The East West Interconnector is a 500 MW High Voltage Direct Current (HVDC) link between the electricity transmission grids of Ireland and Great Britain. At 500 MW it is one of the largest voltage source conversion (VSC) HVDC links in operation worldwide.

We sell capacity on the East West Interconnector through auctions, which you can learn more about below.

Planned Outage: 

  • The East West Interconnector was on outage to facilitate relocation of the East West Interconnector connection in GB from Deeside to Connah’s Quay
  • The issue has been resolved and it is intended to return the East West Interconnector to service
  • The Net Transfer Capacity has been set to 530 MW GB-IE and 500 MW IE-GB effective from 06:00 on 02/06/2017

Celtic Interconnector

EirGrid is exploring an interconnector between Ireland and France, known as the Celtic Interconnector.  More information can be found here.

Safety

Safety is core to how EirGrid does business. To determine if your proposed works may be close to the route of the interconnector, please consult our safety notice and refer to the following links:

ROI B-4-U-DIG

UK Line Search Before-U-Dig

If you need any additional information, call (01) 2370924 (Ireland) or 01244 288 353 (UK).

The Heath and Safety Authority have published a Code of Practice (CoP) on avoiding danger from underground services. The CoP provides practical guidelines to ensure compliance with legal requirements. It is available online here.

In the event of an emergency relating to the East West Interconnector cables, EirGrid will be contacted immediately. The emergency contact number is 01 2370924.

A detailed Irish Route Map is available here.

A detailed Wales Route Map is available here.

Key Information

East West Interconnector - Planned Outage

  • The East West Interconnector was on outage to facilitate relocation of the East West Interconnector connection in GB from Deeside to Connah’s Quay
  • The issue has been resolved and it is intended to return the East West Interconnector to service
  • The Net Transfer Capacity has been set to 530 MW GB-IE and 500 MW IE-GB effective from 06:00 on 02/06/2017

For all the information you need on trading as a market participant, auctions and results, outages, open consultations, and relevant documentation, click here.

Consultations

Access Rules and Charging Methodology

EirGrid Interconnector DAC seek to consult on the Access Rules and Charging Methodology of the East West Interconnector (EWIC).

The purpose of this consultation is to invite the views of interested parties on the following:

  • Proposed rule changes that are required to transition to I-SEM, Financial Transmission Rights and the Harmonised Allocation Rules (“HAR”).
  • The continued applicability of the existing Moyle and East West Interconnector Access Rules and charging Methodology up to the date of I-SEM Go Live.

Documents relating to this consultation can be found below:

Contact Information

Interconnector Administrator

Tel: +44 (0)28 90707450

Email: interconnectors@soni.ltd.uk

EirGrid Main Reception

Tel: +353 (0)1 677 1700

Email: info@eirgrid.com

Emergency Number

Tel: +353 (0)1 237 0924