Seagreen
Suction bucket jacket foundations. World record for deepest bottom-fixed at 58.7m.
Status
Operationallifecycle stage
Ownership
Location
United KingdomNorth Sea
Technology
Capacity
1,075 MW ◆
Turbines
114 × 10 MW ◆
Model
Vestas V164 10-0 ◆
Foundation
Jacket ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Crown Estate Round 3 · 2010 ·
Water depth
41–58.6 m ◆
Distance from shore
27 km ◆
Wind speed
10.5 m/s @ 150 m ≈
Revenue & grid
Offtake
CfD · AR3 ◆
Grid
Connected ◆
Connection
Grid connection secured. Tealing 275kV substation (upgraded to … ◆
Schedule
FID
2020 ◆
COD
2023-Q4 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
7 dated milestones on the spine, each with its source · 4 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 13 sources (13 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.
Regulator5
[2]
Marine Scotland (Marine Directorate)◆ Seagreen Offshore Wind Farm Development …
supportsWater depthCoordinates
[3]
Marine Scotland (Marine Directorate)2014-10◆ Seagreen Alpha and Bravo Offshore Wind F…
“Seagreen Alpha and Seagreen Bravo Offshore Wind Farms and associated Transmission Infrastructure, awarded marine licences and section 36 consents in October 2014”
supportsConsentConsent appliedConsent granted
[4]
UK Department for Business, Energy & Industrial Strategy (BEIS)2019-09-20◆ CfD Allocation Round 3 results
“Seagreen Phase 1 | Seagreen Wind Energy Limited | Offshore Wind | 454.00 | 41.611 | 2024/25.”
supportsMechanismDetail
[12]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 2540: Site Name "Seagreen", Development Status "Operational", Installed Capacity 1075 MWelec, Operator "SSE / Seagreen Wind Energy Ltd"”
supportsRegister entry
[14]
Scottish Government Marine Directorate (MD-LOT)2026-08-23◆ Scottish MD-LOT marine projects register…
“Register row "Seagreen Alpha and Bravo Offshore Wind Farms" (key ml/seagreen-alpha-and-bravo-offshore-wind-farms): Application stage "Post-consent", type "Renewables - Wind". Register row "Seagreen Al…”
supportsRegister entry
Operator4
[1]
SSE Renewables◆ Seagreen Offshore Wind Farm | SSE Renewa…
“Final Investment Decision was reached on 3 June 2020 ... Foundation installation commenced in October 2021. ... Seagreen secured a 15-year CfD contract in 2019, for 454MW and the Final Investment Deci…”
supportsoperatorFinal investment decisionOnshore constructionOffshore constructionTurbines+5 more
[5]
TotalEnergies2023-12-21◆ Scotland: TotalEnergies Farms Down 25.5%…
“Following this farm down, TotalEnergies retains 25.5% of Seagreen, alongside PTTEP (25.5%) and SSE Renewables (49%).”
supportsowner
[8]
TotalEnergies2023-10-17◆ TotalEnergies commissions its biggest of…
supportsStatusConnection point
[13]
National Energy System Operator (NESO)2026-07-21◆ NESO Transmission Entry Capacity (TEC) R…
“NESO TEC Register, edition 21 July 2026 - PRO-000527: "Seagreen 1 Offshore Wind Farm", Status "Built", MW Connected 1075, Effective From n/a, Customer "Seagreen Wind Energy Limited"”
supportsRegister entry
Auction results1
[17]
BEIS (gov.uk)2019-09◆ cfd-ar3-results-2019
Offshore Wind awards (2012 prices): Doggerbank Creyke Beck A P1 1,200.00 MW, GBP 39.650, 2023/24; Creyke Beck B P1 1,200.00 MW, GBP 41.611, 2024/25; Teeside A P1 1,200.00 MW, GBP 41.611, 2024/25; Sofi…
supportsCfD · AR3
Trade press3
[6]
offshoreWIND.biz2022-08-23◆ Scotland’s Largest Offshore Wind Farm Pr…
Press report — cited, not quoted; read it at the source link.
supportsFirst powerFoundation marshalling (Seaway 7)Turbine marshalling (Vestas)
[7]
reNEWS2023-10-17◆ Seagreen enters full commercial operatio…
Press report — cited, not quoted; read it at the source link.
supportsCommercial operationCOD history
[9]
Early access