Walney 1 & 2
Located 14km west of Walney Island, Cumbria. Operated by Ørsted.
Status
Operationallifecycle stage
Ownership
Location
United KingdomIrish Sea
Technology
Capacity
367 MW ◆
Turbines
102 × 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
20–30 m ≈
Distance from shore
14 km ◆
Wind speed
9.7 m/s @ 100 m ≈
Revenue & grid
Offtake
Other ◆
Grid
Secured · 2011 ◆
Connection
Phase 1: Heysham, Cumbria (National Grid 400/132kV); Phase 2: … ◆
Schedule
FID
Apr 2009 ◆
COD
Jun 2012 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
5 dated milestones on the spine, each with its source · 6 recorded ownership deals from Hafrok's transactions record · the developer's announced-COD history
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Revenue & offtake contract terms, price levels and the route to market
the contract terms on record · price over time in money of the day · the routes to market and the next visible round
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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
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Sources & verification
Rests on 16 sources (15 primary) · ◆ 12 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
[1]
Ofgem2009-07◆ Walney I Offshore Transmission Assets - …
"The Walney I Wind Farm will consist of 51 Siemens SWT 3.6MW wind turbine generators. [...] All necessary offshore consents and licences are in place for the construction of the Walney I Transmission …
supportsConsentTurbinesModelUnit capacityStatus+4 more
[2]
Ofgem2009-07◆ Walney II Offshore Transmission Assets -…
“The Walney II Wind Farm will consist of 51 Siemens 3.6MW wind turbine generators. [...] All necessary offshore consents and licences are in place for the construction of the Walney II Transmission Ass…”
supportsTurbinesUnit capacity
[15]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 2500: Site Name "Walney 1", Development Status "Operational", Installed Capacity 183.6 MWelec, Operator "Orsted (formerly Dong Energy)"; Ref ID 2506: Site Name …”
supportsRegister entry
Operator6
[6]
Ørsted A/S2023-02◆ Orsted Annual Report 2022
“Walney (UK) Offshore Windfarms Ltd 49.9 % London, UK [non-controlling interest]. [...] our other UK offshore wind farms as well as our Renescience plant are under the ROC regime.”
supportsMechanismDetail
[7]
Ørsted A/S2026-02◆ Ørsted Annual Report 2025
“Walney (UK) Offshore Windfarms Limited The UK S 50 % [...] In 2025, we expanded the use of heavy-lift cargo drones to Hornsea 1 and 2 and Walney 1 & 2.”
supportsBackground
[13]
DONG Energy A/S2009-04-22◆ DONG Energy to build further offshore wi…
“DONG Energy has decided to build the offshore wind farm Walney II in the Irish Sea. ... With the 2 ROCs, we can now begin the construction of Walney I and II," says Anders Eldrup, CEO of DONG Energy.”
supportsFinal investment decision
[16]
National Energy System Operator (NESO)2026-07-21◆ NESO Transmission Entry Capacity (TEC) R…
“NESO TEC Register, edition 21 July 2026 - PRO-000221: "Walney I Offshore Wind Farm", Status "Built", MW Connected 182, Effective From n/a, Customer "WALNEY (UK) OFFSHORE WINDFARMS LIMITED"; PRO-000222…”
supportsRegister entry
[17]
TotalEnergies Gas & Power Limited2026-08-24◆ TotalEnergies Gas & Power secures renewa…
“United Kingdom, August 24th, 2026 - TotalEnergies Gas & Power Limited (TotalEnergies) has entered into a long-term Power Purchase Agreement (PPA) with Offshore Partners Walney (OPW), which holds a 24.…”
supportsTotal capacity
[21]
DONG Energy A/S2007-12-03◆ DONG Energy invests in UK offshore wind …
“Walney Island will be placed in the Irish Sea 15 km off the West coast of England and is the first stage of a project, where DONG Energy has acquired the right to develop, build and operate an offshor…”
supportsConsentConsent granted
Trade press6
[3]
Offshore Wind Biz2011-01◆ First power from the Walney 1 Offshore W…
Press report — cited, not quoted; read it at the source link.
supportsOffshore constructionFirst power
[5]
Offshore Wind Biz2020-09◆ SSE Selling Walney Stake | Offshore Wind
Press report — cited, not quoted; read it at the source link.
supportsTotal capacity
[9]
[10]
[12]
[14]
Encyclopaedic1
[11]
Early access