West of Duddon Sands
Located 14km SW of Walney Island, East Irish Sea.
Status
Operationallifecycle stage
Ownership
Location
United KingdomIrish Sea
Technology
Capacity
388.8 MW ◆
Turbines
108 × 3.6 MW ◆
Model
Siemens Swt 3-6-120 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Crown Estate Round 2 · 2003 ·
Water depth
17–24 m ◆
Distance from shore
14 km ◆
Wind speed
9.6 m/s @ 100 m ≈
Revenue & grid
Offtake
Other ◆
Grid
Secured · 2014 ◆
Connection
Heysham onshore substation ◆
Schedule
FID
2011 ◆
COD
2014-Q4 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2003-12
Crown Estate Round 2
- Awarded to
- Ørsted / ScottishPower
- Basis
- seabed award
From the auction results — the round that created the project.
JV formation · 2011-06
Ørsted · ScottishPower Renewables 50%
- Stake
- 50%
- Consideration
- not disclosed
- Announced
- 2011-06
- Closed
- 2012-Q1
- Project stage
- consented
DONG Energy (now Ørsted) and ScottishPower Renewables (Iberdrola subsidiary) formed a 50/50 JV to develop and construct West of Duddon Sands. No equity consideration reported — both partners contributed construction costs (total project cost c. GBP 1.6bn). Farm commissioned 2014.
Evidence
- orsted.com — DONG Energy and ScottishPower Renewables to build West of Duddon Sands offshore wind farm ↗ 2011-06 ◆ held
From Hafrok’s transactions record
Farmdown · 2025-04
Ørsted → Schroders Greencoat 24.5%
- Stake
- 24.5%
- Consideration
- €534m
- Implied 100% value
- €2,180m
- Implied
- €5.61m / MW
- Basis
- Enterprise value
- Announced
- 2025-04
- Project stage
- operational
Ørsted sold 24.5% of its 50% stake (reducing its holding to 25.5%) to funds managed by Schroders Greencoat. Consideration GBP 456.1m on a debt-free basis. Implied 100% project value GBP 1,861m / EUR 2,212m. Ørsted retains O&M responsibility. Transaction closed 30 April 2025. EUR figure at the ECB 2025-04 monthly average (1.1713 EUR per GBP).
Evidence
- Ørsted A/S — Orsted divests 24.5% stake in West of Duddon Sands Offshore Wind Farm to Schroders Greencoat ↗ 2025-05 ◆ held
From Hafrok’s transactions record
Dashed tick marks today (13 Oct 2026). The teal diamond on the spine is origination — the seabed award or round that created the project. Every other ownership event lives in the band below: one station per recorded deal, dated at its label, in deal order rather than to calendar scale. Secondary trades appear only at the interchanges; grey lines are parties whose entry or exit Hafrok’s record does not hold.
Revenue & offtake the regime the project was built under
Offtake regime: ROC 2.0 ROCs/MWh (subsidy expiry 2034)
A built project sells its power under the contract or support regime it was financed with; it is not expected to bid into new government offtake rounds. Where the record does not yet name that regime, the row says so rather than guessing.
Installation how the build is going · from sourced statements and Hafrok’s registers
Installation complete
Installation · on record
StageOperational
In operation since2014-Q4
Offshore construction2013 → 2014-Q4
Construction ports
PortBelfast Harbour ◆·turbine assembly and installation · quay 500 m · crane 840 t · draft 10 m
PortBarrow-in-Furness ◆O&M base
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 1
Offshore substationWest of Duddon Sands Offshore Substation Platform·150/34 kV · in service 2014 · owner WoDS Transmission plc (OFTO; Macquarie Corporate Holdings Pty Ltd and 3i Infrastructure plc); developed by Ørsted (DONG Energy) and ScottishPower Renewables
Grid connection · ready in time?
when each part of the grid connection is due, against the start date the developer states (black line) · a bar spans the whole year, quarter or month the source gives
installed or in serviceexpected deliveryearlier date that was later moved
Sources & verification
Rests on 12 sources (9 primary) · ◆ 10 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.
Regulator2
[4]
UK Department of Energy and Climate Change (DECC)2014-10-30◆ Edward Davey opens West of Duddon Sands …
“West of Duddon Sands wind farm ... officially opened by UK Energy Secretary Ed Davey ... 389 megawatt (MW) wind farm ... completed two months ahead of schedule ... Joint venture between ScottishPower …”
supportsBackground
[10]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 2519: Site Name "West of Duddon Sands", Development Status "Operational", Installed Capacity 389 MWelec, Operator "Scottish Power Renewables & Orsted (formerly …”
supportsRegister entry
Operator4
[1]
Ørsted A/S2014-10-30◆ West of Duddon Sands is now officially o…
“Full power output has been achieved more than two months ahead of schedule from West of Duddon Sands Offshore Wind farm ... The news came on the day that the 389 megawatt (MW) wind farm was officially…”
supportsCommercial operationTurbinesUnit capacityTotal capacityFoundation+4 more
[2]
Ørsted A/S2014-06-19◆ Final turbine installed at West of Duddo…
“The team behind the West of Duddon Sands offshore wind farm are celebrating the successful installation of the final turbine at the 389MW project. The 108th turbine was hoisted into position by the Se…”
supportsTurbinesModelUnit capacityTotal capacity
[3]
Ørsted A/S2025-05-01◆ Orsted divests 24.5% stake in West of Du…
“Ørsted has completed a farm-down for a 24.5% stake in West of Duddon Sands Offshore Wind Farm to funds managed by Schroders Greencoat. The value of the transaction is GBP 456.1 million (approx. DKK 4 …”
supportsoperatorownerTotal capacityDistance from shore
[11]
National Energy System Operator (NESO)2026-07-21◆ NESO Transmission Entry Capacity (TEC) R…
“NESO TEC Register, edition 21 July 2026 - PRO-000210: "West of Duddon Sands Offshore Wind Farm", Status "Built", MW Connected 382, Effective From n/a, Customer "MORECAMBE WIND LIMITED"”
supportsRegister entry
Financier1
[5]
European Investment Bank2013-02-18◆ WEST OF DUDDON SANDS OFFSHORE WINDFARM
“a 389 MW offshore windfarm in the Irish Sea (Northwest England), comprising 108 turbines positioned 14 kilometers southwest of Barrow-in-Furness with water depths between 17-24 meters.”
supportsWater depthDistance from shoreCoordinates
Trade press5
[6]
Power Technology (GlobalData)
Press report — cited, not quoted; read it at the source link.
supportsConsentFinal investment decisionOnshore constructionOffshore constructionModel+5 more
[8]
Business News Today2025-06-23◆ What is the West of Duddon Sands Offshor…
“Ørsted has retained operational control and now holds a 25.5 percent stake in the project. ScottishPower Renewables maintains its 50 percent ownership.”
supportsoperator
[9]
[12]
Ørsted2025-Q2◆ Orsted — orsted factsheet asset book q2 …
“West of Duddon Sands (108 x SWT-3.6-120) | Scottish Power Renewables (Iberdrola), Schroders Greencoat | 388.8 | 388.8 | 99.1 | Pro rata | 0.255 | 0.255 | 2014 | ROC | 2034 | - | 2”
supportsMechanismDetail
[13]
Ørsted2025-03-31◆ Orsted — orsted factsheet asset book q1 …
“OFFSHORE - Asset Book updated as of 31 March 2025 ... West of Duddon Sands (108 x SWT-3.6-120) | Scottish Power Renewables (Iberdrola) | 388.8 | 388.8 | 194.4 | Pro rata | 0.5 | 0.5 | 2014 | ROC | 203…”
supportsTotal capacity