Ecowende (Hollandse Kust West Site VI)
Won via competitive tender with ecology as key assessment criterion.
Status
Under Constructionlifecycle stage
DeliveringHafrok completion outlook
Ownership
Location
NetherlandsNorth Sea
Technology
Capacity
760 MW ◆
Turbines
52 × 15 MW ◆
Model
Vestas V236 15-0 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Hollandse Kust (west) Sites VI & VII · 2022 ·
Water depth
24–29 m ≈
Distance from shore
53 km ◆
Wind speed
9.9 m/s @ 150 m ≈
Revenue & grid
Offtake
Merchant ◆
Grid
Secured · 2021-11-26 ◆
Connection
TenneT Hollandse Kust (west) Alpha offshore platform; max … ◆
Schedule
FID
2022 ◆
COD · announced
2026 ◆
COD · Hafrok
2026 expected
Delivery outlook modelled by Hafrok · calibrated on delivered projects
2026
expected year of commercial operation
Chance of delivery
≈97%
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 |
|---|---|
| 2026 (expected) | 86.7% |
| 2027 | 13.3% |
| Stated | Announced COD |
|---|---|
| 2026-07-06 | 2026 (held since 2022-12-15, 6 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
2027; the faster quarter of similar projects would be done by 2026, the slower quarter not until 2028.3
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 ≈97%, 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 · 2022-12
Hollandse Kust (west) Sites VI & VII
- Awarded to
- Ecowende (Shell + Eneco; later Chubu)
- Basis
- integrated tender
Founding JV · 2022-12
Shell · Eneco — Ecowende (Shell 60%, Eneco 40% at formation) awarded the subsidy-free tender for Hollandse Kust West VI on 15 December 2022. 760 MW capacity, approximately 53 km off the coast of IJmuiden. First offshore wind farm globally planned in harmony with nature (ecological design). Chubu Electric Power subsequently acquired 30% from Eneco in 2024, leaving Eneco at 10%.
Evidence
- shell.com — News and media releases ↗ 2022-12 ◆ held
- offshoreWIND.biz — Shell and Eneco Win Second Hollandse Kust West Site, 756 MW Offshore Wind Farm to Include Several Nature Protection and Enhancement Measures ↗ 2022-12 ◆ held
From the auction results — the round that created the project; founding JV from Hafrok’s transactions record.
JV entry · 2024-02
Eneco → Chubu Electric Power 30%
- Stake
- 30%
- Consideration
- not disclosed
- Announced
- 2024-02
- Closed
- 2024-05
- Project stage
- pre-FID
Eneco and Chubu Electric Power signed an agreement in February 2024 for Chubu to acquire 30% of Ecowende. Transaction completed 9 May 2024 following regulatory approvals. Post-transaction structure: Shell 60%, Chubu 30%, Eneco 10%. Deal value not disclosed. Chubu's entry is part of its international offshore wind expansion strategy.
Evidence
- news.eneco.com — Eneco and Chubu Electric Power conclude agreement on sale of stake in Ecowende ↗ 2024-02 ◆ held
From Hafrok’s transactions record
Dashed tick marks today (9 Sep 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: held (announced 2026, unchanged) · the full guidance history is in the delivery chart above
Revenue & offtake the regime the project was built under
Offtake regime: Zero-subsidy (ecology-criteria tender, merchant / PPA)
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 satellite counts and Hafrok’s registers
Satellite installation tracker
counted from satellite radar images · a structure standing in the sea on a given date, not a turbine producing power · a guide, not a sourced fact
Installation · counted from satellite
Foundations52 of 52≈100% · first seen 2025-12-05 · 1 more than the record expects — a met mast, a platform not on the register, or a survey artefact
Turbines37 of 52≈71% · first seen 2023-09-18
Latest count2026-08-30from 551 satellite passes · 1 substation platform left out so the counts compare with the turbine number · anything first seen in the last 60 days is not yet confirmed
Hafrok counts foundations and turbines from satellite radar images (≈): a structure is counted once it is seen standing in the sea, which is not the same as producing power. A structure first seen in the last 60 days is not yet confirmed, because on a single image a freshly set foundation and a ship holding position look alike. Substation platforms are left out so the counts compare with the number of turbines. Rows marked with a dot (·) come from Hafrok’s own registers; a supplier or contract appears only where a source states it — everything else reads “not recorded”, never guessed.
Structures standing over time · count
strong line = confirmed · light line = seen in the last 60 days, not yet confirmed · the chart counts every structure (52 turbines + 1 platform); the table counts turbines only
foundationsturbines up (a substation top being set in place counts here too)
Satellite image
Image taken2026-09-05≈Copernicus Sentinel-1 radar satellite, southbound pass
Farm covered100%≈the whole farm lies inside the image
Structures ringed54 confirmed · 0 not yet confirmed≈as counted on 2026-08-30 · the image is newer than the count, so a bright spot without a ring may be a structure not yet counted
Construction ports
PortBuss Terminal Eemshaven ◆·turbines · quay 5000 m · crane 50 t · draft 14 m
Contains modified Copernicus Sentinel data 2026, processed by ESA and by Microsoft Planetary Computer.
Latest satellite radar image · 2026-09-05
a radar picture, not a photograph: the sea is dark, steel is bright · black is beyond the edge of the image
confirmed structure (54)seen recently, not yet confirmed (0)probably a substation platform (a larger structure than a turbine; the register above has the facts)farm boundary
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 1
Offshore substationHollandse Kust (west Alpha)·owner TenneT
Sources & verification
16/19 fields verified · rests on 13 sources (7 primary) · ◆ 11 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
[1]
RVO (Netherlands Enterprise Agency)2024-08◆ RVO Hollandse Kust West VI & VII results
“On 15 December 2022, Minister for Climate and Energy Rob Jetten announced that the permit for Wind Farm Site VI of the Hollandse Kust (west) Wind Farm Zone has been awarded to Ecowende, a consortium o…”
supportsConsentMechanismDetailConsent granted
[3]
RVO (Netherlands Enterprise Agency)2021-06◆ Hollandse Kust (west) Wind Farm Zone - P…
“Hollandse Kust (west) Wind Farm Zone (HKWWFZ) is located approximately 28.6 nautical miles (53 km) off the west coast of the Netherlands. [...] The water depth generally increases from the north-east …”
supportsDistance from shoreCoordinates
Operator4
[2]
Ministry of Economic Affairs and Climate Policy (Netherlands)2021-11-26◆ Kavelbesluit VI windenergiegebied Hollan…
“Het windpark wordt aangesloten op het TenneT-platform Hollandse Kust (west Alpha)...”
supportsTotal capacityStatusConnection point
[4]
Eneco2022-12-15◆ Shell and Eneco win tender for offshore …
“Shell and Eneco have already taken the final investment decision for this wind farm. [...] approximately 53 kilometers off the Dutch coast near IJmuiden [...] 760 MW [...] Expected to meet approximate…”
supportsFinal investment decision
[9]
Ecowende2024-12-12◆ Ecowende chooses Buss Ports for state-of…
“Buss Terminal Eemshaven [...] Storage and handling of wind turbine components [...] managing 52 Vestas V236 turbine sets with nacelles, blades, and towers [...] operating across 200,000+ square meters…”
supportsturbines
[13]
Eneco2026-07-06◆ First power ecowendes offshore wind farm…
“Ecowende’s wind farm Hollandse Kust West, one of the most ecological offshore wind farms in the world, is now connected to TenneT’s offshore grid and has produced its first carbon-free energy. The win…”
supportsFirst powerCommercial operationCOD history
OEM1
[5]
Vestas2023-12-22◆ Vestas secures a firm order for Ecowende…
“Vestas secures a firm order for Ecowende's Hollandse Kust West offshore wind farm in the Netherlands [...] 52 V236-15.0 MW wind turbines [...] 760 MW [...] turbine installation expected to begin Q2 20…”
supportsCommercial operationTurbinesModelUnit capacity
Trade press6
[6]
offshoreWIND.biz2025-09-25◆ Offshore Construction Starts on Ecowende…
Press report — cited, not quoted; read it at the source link.
supportsOffshore construction
[7]
offshoreWIND.biz2025-12-05◆ First Monopile In at ‘Most Ecological Of…
Press report — cited, not quoted; read it at the source link.
supportsFoundationBoreas — foundation installation
[8]
offshoreWIND.biz2024-05-09◆ Japan's Chubu Completes Ecowende Buy-In …
Press report — cited, not quoted; read it at the source link.
supportsoperatorinvestorpartner
[10]
offshoreWIND.biz2026-06-01◆ First Wind Turbine Installed at Hollands…
Press report — cited, not quoted; read it at the source link.
supportsCommercial operationBoreas — turbine installation
[11]
[12]