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4C is now TGS

We are excited to announce a significant milestone in 4C Offshore's journey. Our integration into the TGS family marks the beginning of a new era in offshore wind market intelligence.

Learn what this means for you!
31 May 2024: Update April 2024: The project is yet to apply for consent. The project is targetting AR7 so TGS assumes application in May Update February 2024: Anticipated S36 and Marine Licence application submissions in Spring 2024 Update June 2023: Consent Application through Environmental Impact Assessment (EIA) yet to be submitted. Project currently applying for Marine Licence Bands 1, 2 and 3. Once these have been awarded, a section 36 approval can be applied for. According to the project timeline, the consent and licence applications will be submitted to Natural Resource Wales in November 2022. The following consents are required: 1. Section 36 (S.36) consent to construct and operate an offshore generating station, under the Electricity Act 1989. This would include deemed planning permission2 for onshore works. Given that deemed planning permission would be sought, a separate planning application under the Town and Country Planning Act 1990 would not be required. The S.36 application would be consented by the Planning and Environment Decisions Wales (PEDW), administering on behalf of the Welsh Ministers3; and 2. A Marine Licence consented under Part 4 of the Marine and Coastal Access Act 2009 to carry out certain activities in the marine environment, including construction works on the seabed, depositing substances or articles and dredging. The Natural Resources Wales Marine Licensing Team (NRW MLT) administers marine licences on behalf of the Welsh Ministers.
United Kingdom
Concept/Early Planning
100 MW
4C Offshore | Location Map: Lat(51.337) Lon(-5.447)

Subscribers can track wind farms on their dashboard.

General Information
Llŷr 1
Other Names
Llyr 1; Llyr Wind
United Kingdom
Development Status
Concept/Early Planning
Category or Round
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Unlock with a freemium account
Unlock with a freemium account



Floventis Energy Limited

Floventis Energy Limited


Cierco Ltd

Cierco Ltd


SBM Offshore N.V.

SBM Offshore N.V.

Offshore Construction Starts
Submitted For Consent
Consent Authorised
Financial Close
First Power
Full Commissioning
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Revenue Mechanism
Revenue Details
/MWh (EUR /MWh)

How does the database work?

4C Offshore marine intelligence software provides you with exclusive access to a range of specialised services including the Global Offshore Wind Farm Database. 4C Offshore grants you exclusive access to online and offline databases, reports, newsletters, online tools and more.

There are three levels of access: Free, Freemium and Full. Freemium allows you to personalise notifications, use the search function and access more data.

You will need Full access to use the 4C Offshore interactive system, access reports, updates, news, downloads and more. To find out more about how 4C Offshore software works and the benefits of Full access, enquire below.

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Power & Turbines
Windfarm Capacity
100 MW
Turbine Model
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Other Turbine(s) Used
Min. Turbine Capacity (MW)
Max. Turbine Capacity (MW)
Min. Number of Turbines
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Max. Number of Turbines
Total Turbine Height
Hub Height
Rotor Diameter
Foundation Type
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Foundations on Wind Farm
Foundation Comments

Location & Environment
Sea Name
Celtic Sea
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Depth Range (Chart Datum)
Depth Range (Stated by Developer)
Distance from Shore (Developer)
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Distance from Shore (Computed)

Installation Base
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Ops and Maintenance
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Number of Offshore Platform(s)
Shared Platform Type
Grid Connection Point
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Cable Landing Point

Export Cables (AC & DC)
Number of Export Cables (AC)
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Average Length per Cable (AC)
Additional Requirements (AC)
Nominal Voltage (AC)
Number of Export Cables (DC)
Average Length per Cable (DC)
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Additional Requirements (DC)
Nominal Voltage (DC)

Nominal Voltage

Onshore Cables
Number of Onshore Cables
Average Length per Cable
Expected Life