Meerwind Süd/Ost

Located 23 km northwest of Helgoland in the German North Sea EEZ (AWZ). First large German offshore wind farm financed solely by private investors.

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

2007’08’09’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25’26View the source for Consent grantedConsent granted May 2007 ◆View the source for Final investment decisionFinal investment decision 2011 ◆View the source for Offshore constructionOffshore construction Aug 2012 ◆View the source for First powerFirst power Sep 2014 ◆View the sources for Commercial operationCommercial operation Feb 2015 ◆Blackstone, Windland Energieerzeugungs GmbH — 80.0% 2008-07 JV FORMATIONBlackstone → China Three Gorges — 80.0% · €645m · closed 2016-08 2016-06 TODAYBlackstone Blackstone Blackstone exited 2016-06Windland Energieerzeugungs — 20% today Windland Energieerzeugu… Windland Energieerzeugu… 20%China Three Gorges — 80% today China Three Gorges China Three Gorges 80%Blackstone, Windland Energieerzeugungs GmbH — 80.0% Blackstone → China Three Gorges — 80.0% · €645m · closed 2016-08 80%
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.
Announced-COD history: 2014-Q4→2015-02 · 2 recorded revisions · held within the year (first announced 2014-Q4, latest 2015-02)

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 since2015-02
Offshore construction2012-08 → 2015-02
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 2
Offshore substationUmspannwerk Meerwind ("Der dicke Malte")·33/155 kV · in service 2014 · owner WindMW GmbH (wind farm owner) — farm-owned AC platform, not TSO-owned
HVDC systemHelWin1·576 MW · ±250 kV · in service 2015-02 · shared with Nordsee Ost
Converter supplierSiemens·HelWin1 · Nordic Yards, Wismar · for TenneT
Grid connection · ready in time?
when each part of the grid connection is due, against the start date the developer states (black line) · a bar spans the whole year, quarter or month the source gives
installed or in serviceexpected deliveryearlier date that was later moved
2014201520162017201820192020202120222023202420252026developer’s stated start 2014-Q4nowHelWin1HelWin1in service 2015-02in service 2015-02Umspannwerk Meerwind ("Der dicke Malte")Umspannwerk Meerwind ("Der dicke …in service 2014in service 2014

Sources & verification

Rests on 11 sources (12 primary) · ◆ 7 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]
Bundesamt fuer Seeschifffahrt und Hydrographie (BSH)2007-05◆ Genehmigungsbescheid Offshore-Windpark M…
“Hamburg, den 16. Mai 2007 [...] werden 40 Anlagen im Bereich der deutschen ausschließlichen Wirtschaftszone (AWZ) der Nordsee [...] Hindenburgufer 247, 24106 Kiel, genehmigt. [...] (Meerwind Ost) vom …”
supportsConsentConsent granted
[12]
Bundesnetzagentur — Marktstammdatenregister2026-08-23◆ Marktstammdatenregister (MaStR) offshore…
“Park row "Meerwind Süd|Ost": 80 units, 302.4 MW gross, statuses {'In Betrieb': 80}, operators ['WindMW GmbH'], commissioned 2014-09-01..2015-02-17, planned None..None.”
supportsCommercial operation
Operator5
[3]
WindMW GmbH2024
“Distance to Helgoland: 23 km Northwest. [...] convenient water depth of 22 m to 26 m.”
supportsWater depthDistance from shoreCoordinates
[4]
Blackstone2011-08◆ WindMW Announces Financing Completion fo…
“August 05, 2011 [...] WindMW GmbH (“WindMW”), a company majority owned by funds managed by Blackstone (NYSE: BX), has completed the financing for “Meerwind,” the largest German offshore wind farm to c…”
supportsFinal investment decision
[5]
Blackstone2014-11-10◆ Germany’s First Privately-Financed Offsh…
“Bremerhaven – 10 November 2014. WindMW GmbH today celebrated the inauguration of Meerwind Süd|Ost, a 288 megawatt offshore wind farm [...] Meerwind Süd|Ost is located 23 kilometers offshore from the i…”
supportsTurbinesTotal capacity
[13]
Unternehmensregister2026-02-17◆ WindMW GmbH, Zossen - Jahresabschluss zu…
“Die WindMW GmbH, Helgoland (vormals: Zossen), ist beim Amtsgericht Potsdam unter der Handelsregisternummer HRB 34002 P gemeldet. ... Die Gesellschaft erzielt Umsatzerlöse im Wesentlichen aus dem Verka…”
supportsMechanismDetail
[16]
Bundesanzeiger2017-03-08◆ WindMW GmbH, Gadebusch (vormals Bremerha…
“Die WindMW GmbH mit Sitz in Bremerhaven ist ein Joint Venture zwischen der BCP Meerwind Germany GmbH, einem Portfolio-Unternehmen des Private Equity Hauses Blackstone Capital Partners (80%) und der Wi…”
supportsFirst powerCommercial operationCOD historyMechanismDetail
Trade press3
[2]
Power Technology (GlobalData)2014
Press report — cited, not quoted; read it at the source link.
supportsOffshore constructionSite rightsTurbinesModelUnit capacity+4 more
[10]
WindMW2024◆ About WindMW
supportsowner
[11]
DTU Wind Energy / World Bank (Global Wind Atlas)2026
supportsMean wind speed
Encyclopaedic1
[9]
Wikipedia2024
“DC voltage of +-250 kV and a transmission capacity of 576 MW. [...] a total length of 130 km, of which 85 km is sea cable and 45 km is underground land cable. [...] Commissioning was completed in Janu…”
supportsStatusConnection point