Gwynt y Mor
Located off North Wales coast in Liverpool Bay. Name means 'Wind of the Sea' in Welsh.
Status
Operationallifecycle stage
Ownership
Location
United KingdomIrish Sea
Technology
Capacity
576 MW ◆
Turbines
160 × 3.6 MW ◆
Model
Siemens Swt 3-6-107 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Crown Estate Round 2 · 2003 ·
Water depth
12–28 m ◆
Distance from shore
17 km ◆
Wind speed
9.3 m/s @ 100 m ≈
Revenue & grid
Offtake
Certificate ∅
Grid
Secured · 2015 ◆
Connection
400kV onshore substation at St. Asaph, Denbighshire ◆
Schedule
FID
Jun 2010 ◆
COD
2015-Q2 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
6 dated milestones on the spine, each with its source · 5 recorded ownership deals from Hafrok's transactions record · the developer's announced-COD history
For registered readers · register below ↓
Revenue & offtake contract terms, price levels and the route to market
the Certificate contract's terms · price over time in money of the day · the routes to market and the next visible round
For registered readers · register below ↓
Installation how the build is going · from sourced statements and Hafrok's registers
construction status and turbines standing · vessel and port contracts · the grid connection and whether it is ready in time
For registered readers · register below ↓
Sources & verification
Rests on 10 sources (7 primary) · ◆ 7 documents held
◆Verified≈Modelled◇Sourced∴Inferred⌁Convention○Unverified∅No source·Derived
Numbers are stable citation ids — grouped by source class, so they are not consecutive.
Regulator3
[2]
Ofgem2010-11◆ Gwynt y Mor Offshore Transmission Assets…
“All necessary offshore consents and licences are in place for the construction of the Transmission Assets. These include Electricity Act (1989) Section 36 and Coastal Protection Act (1949) consents an…”
supportsOnshore constructionOffshore constructionStatusConnection point
[4]
Ofgem2015-02-12◆ Ofgem grants licence for £352 million Gw…
“The offshore wind farm comprises 160 Siemens 3.6MW turbines with a maximum installed capacity of 576MW, positioned approximately 8 miles off the North Wales coast in Liverpool Bay.”
supportsModel
[11]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 2543: Site Name "Gwynt y Mor", Development Status "Operational", Installed Capacity 576 MWelec, Operator "RWE"”
supportsRegister entry
Operator4
[1]
RWE AG2025-07-07◆ Wales’s largest Offshore Wind Farm, Gwyn…
“At 576 megawatts (MW) installed capacity, Gwynt y Môr is currently the largest operating renewable energy project in Wales and, at the time of its inauguration in June 2015, was the second largest off…”
supportsCommercial operationCOD historyTurbinesUnit capacityTotal capacity+1 more
[3]
RWE (UK)2025◆ Gwynt y Môr offshore wind farm
“Gwynt y Môr Offshore Wind Farm Limited is an Unincorporated Joint Venture between RWE (50% shareholder), Stadtwerke München GmbH (30% shareholder) and Macquarie GIG (20% shareholder). [...] Commission…”
supportsDistance from shoreCoordinates
[8]
[12]
National Energy System Operator (NESO)2026-07-21◆ NESO Transmission Entry Capacity (TEC) R…
“NESO TEC Register, edition 21 July 2026 - PRO-000208: "Gwynt Y Mor Offshore Wind Farm", Status "Built", MW Connected 574, Effective From n/a, Customer "GWYNT Y MOR OFFSHORE WIND FARM LIMITED"”
supportsRegister entry
OEM1
[9]
Siemens2010-06-04
“RWE Innogy, Stadtwerke München and Siemens have entered into a joint venture to build the offshore wind farm Gwynt y Môr (Welsh for 'wind in the sea'). ... The total investment amounts to more than tw…”
supportsFinal investment decision
Trade press2
[5]
Power Technology2015
Press report — cited, not quoted; read it at the source link.
supportsConsentFirst powerModelFoundationWater depth+1 more
[10]
Early access