Egmond aan Zee (OWEZ)

Located 10-18 km off Egmond aan Zee coast, North Holland. Originally NoordzeeWind JV (Shell 50% / Nuon 50%). Shell acquired 100% in March 2021.

Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record

2006’07’08’09’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25’26View the source for Final investment decisionFinal investment decision 2005 ◆View the source for Offshore constructionOffshore construction Apr 2006 ◆View the source for First powerFirst power 2007 ◆View the source for Commercial operationCommercial operation 2007 ◆Shell, Vattenfall — stake not disclosed · closed 2006-Q1 2004-Q4 JV FORMATIONVattenfall → Shell — 50% · €12m 2021-03 ACQUISITIONTODAYShell — 100% today · operator Shell Shell 100%Vattenfall Vattenfall Vattenfall exited 2021-03Shell, Vattenfall — stake not disclosed · closed 2006-Q1 Vattenfall → Shell — 50% · €12m 50%
Dashed tick marks today (13 Oct 2026). Ownership 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 on record
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 since2007
Offshore construction2006-04 → 2007
Construction ports
PortIJmuiden ◆·marshalling · quay 580 m · draft 12.5 m
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 1
Offshore substationMeetmast Egmond aan Zee (OWEZ met mast)·owner NoordzeeWind, the farm's operator (Shell and Nuon/Vattenfall at the time of the decree; Shell sole owner since 2021). The decree calls the mast the operator's: "de exploitant ... heeft ... de windturbines en een meetmast geplaatst".

Sources & verification

Rests on 10 sources (6 primary) · ◆ 4 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
[5]
RVO (Rijksdienst voor Ondernemend Nederland)◆ Operational wind farms in the North Sea …
“Egmond aan Zee wind farm (OWEZ) opened in 2007, approximately 11 kilometers off the coast of Egmond aan Zee and with an installed capacity of 108 megawatts (MW).”
supportsConsentTotal capacity
[6]
Noordzeeloket (RWS / Ministry of Infrastructure and Water Management)
“36 wind turbines at 3 MW each. Total output: 108 MW. Commissioned: 2007. Operating until: 2031. Off the coast of North Holland. Surface area: 27 km². The electricity is brought to land near Wijk aan Z…”
supportsTurbinesUnit capacityTotal capacityStatusConnection point
Trade press8
[1]
Offshore Wind (offshorewind.biz)2021-03-30◆ Shell Takes Full Ownership of First Dutc…
Press report — cited, not quoted; read it at the source link.
supportsoperatorCommercial operation
[2]
Offshore Wind (offshorewind.biz)2025-05-06◆ Shell and Google Power Deal Extends Life…
Press report — cited, not quoted; read it at the source link.
supportsMechanismDetail
[3]
WindpowerNL2021-02-22
Press report — cited, not quoted; read it at the source link.
supportsTurbinesModelUnit capacityTotal capacityFoundation+2 more
[4]
EgmondOnline.nl◆ The Egmond aan Zee Offshore Wind Farm | …
“In spring 2002, NoordzeeWind was selected as the winning party and in July of that year, NoordzeeWind signed the concession agreement with the government for the realization of the park. At the end of…”
supportsFinal investment decisionFirst power
[9]
Global Energy Monitor2026-07-02
supportsCoordinates
[10]
GEBCO Compilation Group2020
supportsWater depth
[11]
windfair.net2006-04-21
Press report — cited, not quoted; read it at the source link.
supportsOffshore constructionSite rights
[12]
DTU Wind Energy / World Bank (Global Wind Atlas)2026
supportsMean wind speed