Deeside 400kV Substation, Kelsterton Road, Connahs Quay, Deeside, Clwyd, CH5 4BP - The East West Interconnector (EWIC) is a 400kV HVDC link between Deeside in Wales and Woodland in Ireland.

Component ID: EWIC15

Last updated: 23 Jul 2025 10:44 UTC

Location:

Deeside 400kV Substation, Kelsterton Road, Connahs Quay, Deeside, Clwyd, CH5 4BP

Company:

EirGrid Interconnector Designated Activity Company

CMU ID:

EWIC15

Technology:

N/A

Description:

The East West Interconnector (EWIC) is a 400kV HVDC link between Deeside in Wales and Woodland in Ireland.

Auction:

2017-18 (T-1) One Year Ahead Capacity Auction

Technical Capacity Information

Capacity Metrics

De-Rated Capacity (Component DB) N/A
De-Rated Capacity (CMU Registry) 131.30
Connection Capacity (CMU Registry) 505 MW
Anticipated Capacity (CMU Registry) 131.30 MW

Note: De-rated capacity typically accounts for availability factors. Connection capacity represents the maximum grid connection size. Values sourced from Component database or CMU Registry as indicated.

Contact & Ownership

Raw Component Data

Field	Value
_id	576343
Type	T-1
rank	0.0573088
CMU ID	EWIC15
Auction Name	2017-18 (T-1) One Year Ahead Capacity Auction
Component ID	I_IEG-EWIC1
Delivery Year	2017
De-Rated Capacity	(empty)
OS Grid Reference	SJ 283 705
Location and Post Code	Deeside 400kV Substation, Kelsterton Road, Connahs Quay, Deeside, Clwyd, CH5 4BP
Connection / DSR Capacity	(empty)
Primary Fuel of Component	(empty)
Generating Technology Class	(empty)
Description of CMU Components	The East West Interconnector (EWIC) is a 400kV HVDC link between Deeside in Wales and Woodland in Ireland.
Permitted on-Site Generating Unit	(empty)
Pre-Refurbishing De-Rated Capacity	(empty)
Post-Refurbishing De-Rated Capacity	(empty)
Generating Capacity of on-site Generating Unit	(empty)

Raw CMU Data

Field	Value
_id	4021
Type	T-4
CMU ID	EWIC15
Auction	Capacity Auction
Agent Name	(empty)
Beta Value	(empty)
Auction Name	2020-21 (T-4) Four Year Ahead Capacity Auction
CM Unit Name	EWIC
CM Unit Type	CMRS
TEC Deferral	(empty)
Unproven DSR	(empty)
Delivery Year	2020
Opt Out Status	Opt-In
Opt-Out Reason	(empty)
Parent Company	(empty)
DSR Test Method	(empty)
Is FCM required	(empty)
CM Unit Category	Existing Interconnector CMU
Storage Facility	No
De-Rated Capacity	131.3
Name of Applicant	EirGrid Interconnector Designated Activity Company
Primary Fuel Type	(empty)
Registered Holder	EirGrid Interconnector Designated Activity Company
Annual Penalty Cap	1
Monthly Penalty Cap	2
Proven DSR Capacity	(empty)
DSR Bidding Capacity	(empty)
Amount of Credit Cover	(empty)
Termination Fee 1 Rate	£5000.00 /MW
Termination Fee 2 Rate	£25000.00 /MW
Termination Fee 3 Rate	£10000.00 /MW
Termination Fee 4 Rate	£15000.00 /MW
Termination Fee 5 Rate	£35000.00 /MW
Connection / DSR Capacity	505
Maximum Obligation Period	1
Capacity Agreement Awarded	Yes
Pre-Qualification Decision	Prequalified
Capacity obligation Summary	(empty)
Pre-Refurbishing CMU Status	(empty)
Transmission / Distribution	Transmission
Unique Agreement Identifier	CAN-2020-EWIC15-001
New Build Yet to Satisfy FCM	(empty)
Planning Consents Conditions	(empty)
Anticipated De-Rated Capacity	131.3
Term of the Capacity Agreement	1
Nature of the Security Interest	(empty)
CMU confirmed entry into Auction	Yes
Is Connection Agreement required	(empty)
Pre-Refurbishment Bidding Status	(empty)
Secondary Trading Contact - Email	(empty)
Date for provision of deferred TEC	(empty)
Pre-Refurbishing De-Rated Capacity	(empty)
Date of Issue of Capacity Agreement	2017-01-20
List of Traded Capacity Obligations	(empty)
Post-Refurbishing De-Rated Capacity	(empty)
Auction Acquired Capacity Obligation	131.3
Date of Issue of DSR Test Certificate	(empty)
Has Capacity Agreement been Suspended	(empty)
Period for which the transfer applies	(empty)
Secondary Trading Contact - Telephone	'+353035316771700
Capacity Agreement has been Terminated	(empty)
Duration of Capacity Agreement Awarded	1
Date for Financial Commitment Milestone	(empty)
Delivery Years for which Agreement Valid	2020/2021
Connection Agreement Deferral Declaration	(empty)
Date of Termination of Capacity Agreement	(empty)
Latest Date SCM is expected to be achieved	(empty)
Subject to Substantial Completion Milestone	(empty)
Subject to a Minimum Completion Requirement	(empty)
Earliest Date SCM is expected to be achieved	(empty)
Is copy of Grid Connection Agreement required	(empty)
Anticipated Pre-Refurbishing De-Rated Capacity	(empty)
Anticipated Post-Refurbishing De-Rated Capacity	(empty)
Legal Name of any Person with a Security Interest	(empty)
Date for provision of deferred Connection Agreement	(empty)
Duration of Capacity Agreement in First Bidding Round	(empty)
Long-Stop Date for the Minimum Completion Requirement	(empty)