East Anglia THREE
Part of the East Anglia Hub, a 3+ GW multi-project complex off the Suffolk coast developed by ScottishPower Renewables (Iberdrola).
Status
Under Constructionlifecycle stage
DeliveringHafrok completion outlook
Ownership
ScottishPower Renewables — 50% ◆
Masdar — 50% ◆Location
United KingdomNorth Sea
Technology
Capacity
1,400 MW ◆
Turbines
95 × 14.7 MW ◆
Model
Siemens Gamesa SG 14-236 DD ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Crown Estate Round 3 · 2010 ·
Water depth
31–45 m ≈
Distance from shore
69 km ◆
Wind speed
10.0 m/s @ 150 m ≈
Revenue & grid
Offtake
CfD · AR4 · £37.35/MWh ◆
Grid
Secured · Aug 2022 ◆
Connection
HVDC 320kV onshore converter station at Bramford, Suffolk, … ◆
Schedule
FID
Taken · date not recorded ◆
COD · announced
Dec 2026 ◆
COD · Hafrok
2026 expected
Delivery outlook modelled by Hafrok · calibrated on delivered projects
2026
expected year of commercial operation
Chance of delivery
≈98%
estimated chance this project reaches commercial operation
Under Construction projects complete ≈97% of the time on Hafrok's record. A secured offtake contract lifts this one slightly; its size and technical complexity pull a little the other way.
COD outlook
If it completes, when — Hafrok’s probability by year (teal) · the developer’s COD guidance, by date stated (ink)
| Year | Probability |
|---|---|
| 2025 | 1.3% |
| 2026 (expected) | 75.4% |
| 2027 | 21.7% |
| 2028 | 1.6% |
| Stated | Announced COD |
|---|---|
| 2025-10-27 | 2026 (held since 2023-06-30, 3 statements) |
| 2026-08-17 | 2026-12 (held since 2026-06-30, 2 statements) |
How Hafrok got this date
1
Starting point: the last dated milestone
Construction start in
2025. From there Hafrok adds how long similar projects (in established offshore-wind markets) took to reach commercial operation, measured on projects that have delivered.2
Typical timing
Starting point plus the typical remaining time gives a middle estimate of
2026 Q3; the faster quarter of similar projects would be done by 2025 Q4, the slower quarter not until 2027 Q3.3
Result
Expected commercial operation
2026, likely range 2026–2028 (the middle half of outcomes for similar projects). The developer's announced date falls inside that likely range, so the announced date is adopted.4
Year-by-year chart
The bars spread that estimate across years using how similar projects actually slipped against their dates — more often late than early, which is why the bars lean right.
5
Chance of delivery — separate from timing
Start from the share of Under Construction projects that went on to complete — ≈97%, measured on Hafrok's record of delivered and abandoned projects, with an allowance held back where that record cannot yet speak (projects still unresolved, changed market conditions). Based on the measured record — all 257 construction starts with a final outcome reached operation — adjusted down for projects still mid-build and for legal-challenge risk. Then adjust for this project's own evidence — offtake, market, size, technical complexity — to ≈98%, which rates it
Delivering on Hafrok's four-step delivery scale (Delivering · Expected · Prospective · Fragile).Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2010-01
Crown Estate Round 3
- Awarded to
- East Anglia Offshore Wind Ltd (ScottishPower Renewables + Vattenfall)
- Zone
- Norfolk Bank (East Anglia) zone
- Basis
- seabed award
From the auction results — the round that created the project.
Farmdown · 2023-12
ScottishPower Renewables (Iberdrola) → Masdar 50%
- Stake
- 50%
- Consideration
- not disclosed
- Announced
- 2023-12
- Closed
- 2025-07
- Project stage
- pre-FID
Masdar and Iberdrola announced a co-investment in East Anglia THREE under their EUR 15bn strategic partnership signed December 2023. Masdar acquired a 50% stake from ScottishPower Renewables (Iberdrola's UK subsidiary). The EUR 5.2bn figure widely cited refers to total project capex, not equity consideration for the 50% stake; equity deal value was not publicly disclosed separately. Project financing of GBP 3.6bn (EUR ~4.1bn) reached financial close in July 2025 with 23 banks and EIFO. Construction underway; targeted commissioning Q4 2026. FY2025 accounts disclose only accounting effects of the July 2025 completion: 'a capital loss of EUR 126 million' on deconsolidation plus EUR 277m hedge-discontinuation finance income. NOT consideration: EUR 5,200m estimated total capex, GBP 3,500-3,621m project finance, and the 'total co-investment close to Eur 7 Bn' Masdar partnership PROGRAM figure (covers Baltic Eagle + EA3).
Evidence
- offshoreWIND.biz — 'Largest Offshore Wind Transaction of Decade' - Iberdrola, Masdar Ink East Anglia Three Co-Investment ↗ 2023-12 ◆ held
- Iberdrola — Iberdrola — gsm26 annual accounts consolidated 2025 ↗ 2025 ◆ held
From Hafrok’s transactions record
Dashed tick marks today (13 Oct 2026). The ▲ below the spine is the developer-announced COD. 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.
Announced COD: slipped so far +0.5 yr (first announced 2026) · the full guidance history is in the delivery chart above
Revenue & offtake contract duration and price levels · money of the day
CfD-backed — 2 allocation rounds
● CfD · AR4
Price£37.35/MWh ·Basis2012 real · CPI-indexed
Capacity1,372.34 MWAwardedJul 2022Term15 yrs · delivery 2026/27
● CfD · AR6
Price£54.23/MWh ·Basis2012 real · CPI-indexed
Capacity158.9 MWAwardedSep 2024Term15 yrs · delivery 2027/28
Money-of-the-day values computed by Hafrok from the United Kingdom CPI index, 2012 real base — actual to 2026-08, then an assumed +2.0%/yr (central-bank target). Cfd terms run 15 years from start of generation in the contracted delivery year.
Contract price over time · £/MWh
solid = actual CPI indexation · dashed = assumed +2.0%/yr
CfD · AR4CfD · AR6
Installation how the build is going · from sourced statements and Hafrok’s registers
Installation under way
Installation · on record
StageUnder Construction
Offshore constructionstarted 2025-04
Turbines16 of 95◆17% · as of 2026-06-01 (date published) · reported by ScottishPower Renewables (East Anglia THREE)Expected start of operation2026-12
Construction ports
PortLowestoft (ABP Eastern Energy Facility) ◆operations maintenance
Installation contracts
FoundationsSeaway Ventus◇Seaway7 · foundation and turbine installation vessel · 2025 → 2026-08 · Completed
TurbinesWind Osprey◇Cadeler · turbine installation vessel · 2026 → · Underway
TurbinesWind Pace◇Cadeler · foundation and turbine installation vessel · 2026 → · Underway
Offshore substationSleipnir◇Heerema · heavy-lift vessel · 2025-10 → 2025-10 · CompletedGrid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 1
HVDC systemEast Anglia THREE HVDC·1400 MW · ±320 kV · under construction, expected 2026
Export & onshore
Export cableEast Anglia THREE Export Cable·HVDC subsea · 380 km · NKT · under construction · to Bramford, Suffolk
Onshore connectionBramford Converter Station (East Anglia THREE)·400 kV · under construction
Converter supplierSiemens Energy·East Anglia THREE HVDC · Aker Solutions (Stord, Norway) · for National Grid ESO
Grid connection · ready in time?
when each part of the grid connection is due, against the start date the developer states (black line) and the year Hafrok expects (teal band) · 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 21 sources (12 primary) · ◆ 13 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.
Regulator4
[1]
Planning Inspectorate2017-08-07◆ East Anglia THREE Offshore Wind Farm - P…
“East Anglia THREE Offshore Wind Farm (EN010056). The Secretary of State approved the application for consent on 7 August 2017. The development involves an offshore windfarm with an approximate capacit…”
supportsConsentDistance from shoreConsent appliedConsent granted
[4]
BEIS / DESNZ2022-07-07◆ Contracts for Difference Allocation Roun…
“East Anglia Three, 1,372 MW, awarded CfD at a strike price of GBP 37.35/MWh in Allocation Round 4. Results published 7 July 2022.”
supportsMechanismStrike / priceDetailCfD · AR4
[17]
Department for Energy Security and Net Zero2026-05-06◆ Renewable Energy Planning Database (REPD…
“REPD Q1 2026 quarterly extract — Ref ID 2470: Site Name "East Anglia 3 (EA 3)", Development Status "Under Construction", Installed Capacity 1400 MWelec, Operator "Scottish Power Renewables"”
supportsRegister entry
[29]
The Planning Inspectorate (PINS)2026-08-23◆ PINS national infrastructure application…
"EN010056","East Anglia THREE Offshore Wind Farm","East Anglia THREE Limited","EN01 - Generating Stations" ... "Q3 2015",2015-11-18,2015-12-15,2016-06-28,"",2016-12-28,2017-03-28,2017-08-07
supportsConsentConsent appliedConsent granted
Operator4
[11]
Masdar2025-07
“Masdar and Iberdrola announced their co-investment in East Anglia THREE this month, with each party taking a 50 percent stake and having co-governance of the 1.4GW asset”
supportsoperatorowner
[18]
National Energy System Operator (NESO)2026-07-21◆ NESO Transmission Entry Capacity (TEC) R…
“NESO TEC Register, edition 21 July 2026 - PRO-000270-1: "East Anglia Three", Status "Consents Approved", MW Connected 0, Effective From 2026-01-31, Customer "EAST ANGLIA THREE LIMITED"; PRO-000270-2: …”
supportsRegister entry
[20]
Masdar2026-08-17◆ Scottishpower renewables and masdar mark…
“ScottishPower Renewables and Abu Dhabi Future Energy Company PJSC – Masdar have completedd a major construction milestone at the £4 billion East Anglia THREE offshore wind farm, with all 95 foundation…”
supportsCOD historySeaway Ventus — foundation installation
[28]
ScottishPower2025-04-25◆ First monopile installed at ScottishPowe…
“25/04/2025 The offshore construction programme for ScottishPower’s biggest-ever renewables project is officially underway with the installation of the first foundation for the green energy company’s £…”
supportsOnshore constructionOffshore construction
OEM1
[3]
Siemens Gamesa Renewable Energy2023-03-29◆ Green energy for more than one million U…
“95 units of Siemens Gamesa's largest offshore wind turbine, the SG 14-236 DD, will be supplied for the East Anglia 3 wind power project. The 1.4 GW wind project is the second of the East Anglia develo…”
supportsTurbinesModelUnit capacityTotal capacity
Auction results1
[30]
DESNZ (gov.uk)2024-09◆ cfd-ar6-results-2024
New offshore wind (Pot 3) GBP 58.87, 2028/29: Hornsea Project Four 2,400.00 MW; East Anglia Two Phase 1 963.07 MW. Offshore Wind Permitted Reduction GBP 54.23, 2027/28: Inch Cape A 177.41 / B 88.70 MW…
supportsCfD · AR6
Record source2
[31]
Cadeler A/S2026-04-21◆ first-turbine-standing-at-east-anglia-th…
...p! Taxation Policy Copyright © Cadeler - All rigths reserved. News, Press Releases First turbine installed at East Anglia THREE 21 Apr 2026 Wind Osprey and team have completed the installation of t…
supportsWind Osprey — turbine installationWind Pace — turbine installation
[32]
reNEWS2025-10-27◆ renews-ea3-hvdc-station-2025-10
Press report — cited, not quoted; read it at the source link.
supportsSleipnir — substation installation
Trade press9
[2]
offshoreWIND.biz2019-06-07
Press report — cited, not quoted; read it at the source link.
supportsTotal capacity
[5]
offshoreWIND.biz2025-07-10◆ 'Largest Offshore Wind Transaction of De…
Press report — cited, not quoted; read it at the source link.
supportsFinal investment decision
[6]
offshoreWIND.biz2022-08-12
Press report — cited, not quoted; read it at the source link.
supportsOnshore constructionOffshore constructionFoundationStatusConnection point
[7]
offshoreWIND.biz2025-04-25
Press report — cited, not quoted; read it at the source link.
supportsTurbinesModelFoundation
[8]
offshoreWIND.biz2025-12-17
Press report — cited, not quoted; read it at the source link.
supportsoperations maintenance
[12]
4C Offshore (TGS)2026-07-02
Press report — cited, not quoted; read it at the source link.
supportsCoordinates
[13]
[14]
[19]
Iberdrola2026-07◆ Iberdrola — report 26H1
“The project remains on-track
for commercial operations in December 2026.”
supportsCommercial operation