Arcadis Ost 1
Located 19km northeast of Rugen Island. Connected to 50Hertz Ostwind 2 system.
Status
Operationallifecycle stage
Ownership
POParkwind Ost GmbH — 100% ◆
Location
GermanyBaltic Sea
Technology
Capacity
257 MW ◆
Turbines
27 × 9.5 MW ◆
Model
Vestas V174 9-5 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
BNetzA Offshore Wind Auction 2018 (transitional) · 2018 ·
Water depth
45–45 m ≈
Distance from shore
19 km ◆
Wind speed
10.0 m/s @ 150 m ≈
Revenue & grid
Offtake
Premium ◆
Grid
Secured · 2023-12 ◆
Connection
50Hertz Ostwind 2 system; submarine cable to Lubmin substation … ◆
Schedule
FID
Jun 2021 ◆
COD
Dec 2023 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2018-04
BNetzA Offshore Wind Auction 2018 (transitional)
- Awarded to
- KNK Wind GmbH (acquired by Parkwind → built as Arcadis Ost 1)
- Basis
- integrated tender
From the auction results — the round that created the project.
Acquisition · 2023-03
Virya Energy (Colruyt Group) → JERA 100%
- Stake
- 100%
- Consideration
- not disclosed
- Announced
- 2023-03
- Closed
- 2023-07
- Project stage
- under construction
JERA acquired 100% of Parkwind NV from Virya Energy for ~EUR 1.55bn equity. Platform-level acquisition covering Arcadis Ost 1 plus Belgian assets (Northwester 2, Seamade, Belwind). Arcadis Ost 1 under construction; fully connected December 2023.
Evidence
- jera.co.jp ↗
- offshoreWIND.biz — BREAKING: JERA Buys Parkwind, Belgium's Leading Offshore Wind Developer ↗ 2023-03 ◆ held
From Hafrok’s transactions record
Dashed tick marks today (9 Sep 2026). 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 history: 2023→2023-12 · 2 recorded revisions · slipped +0.5 yr (first announced 2023)
Revenue & offtake the regime the project was built under
Offtake regime on record
RegimeGerman EEG market premium (awarded BNetzA 2018 auction); Vattenfall as direct marketer
Instrumentmarket premium
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
Foundations27 of 27≈100% · first seen 2022-06-08
Turbines25 of 27≈93% · first seen 2022-07-26
Latest count2024-12-30from 307 satellite passes · 1 substation platform left out so the counts compare with the turbine number · the count has ended: the build is complete
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 (27 turbines + 1 platform); the table counts turbines only
foundationsturbines up (a substation top being set in place counts here too)
Satellite image
Image taken2026-09-07≈Copernicus Sentinel-1 radar satellite, northbound pass
Farm covered100%≈the whole farm lies inside the image
Structures ringed28 confirmed · 0 not yet confirmed≈as counted on 2024-12-30 · the image is newer than the count, so a bright spot without a ring may be a structure not yet counted
Construction ports
PortPort of Rønne (Bornholm) ◆turbine pre assembly
Contains modified Copernicus Sentinel data 2026, processed by ESA and by Microsoft Planetary Computer.
Latest satellite radar image · 2026-09-07
a radar picture, not a photograph: the sea is dark, steel is bright · black is beyond the edge of the image
confirmed structure (28)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 substationArcadis Ost 1 offshore substation·220 (export) kV · in service 2022 · owner Parkwind (wind farm developer) with 50Hertz Transmission — reported as jointly operated by Parkwind and the TSO
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
Sources & verification
16/18 fields verified · rests on 13 sources (9 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.
Regulator1
[13]
Bundesnetzagentur — Marktstammdatenregister2026-08-23◆ Marktstammdatenregister (MaStR) offshore…
“Park row "Arcadis Ost I": 27 units, 257.175 MW gross, statuses {'In Betrieb': 27}, operators ['Parkwind Ost'], commissioned 2023-01-20..2023-11-26, planned None..None.”
supportsRegister entry
Operator8
[1]
Staatliches Amt für Landwirtschaft und Umwelt Vorpommern (StALU VP)2021-03-31◆ Genehmigung nach § 16 BImSchG Offshore-W…
“Der Firma Parkwind Ost GmbH...wird auf ihren Antrag vom 26.04.2019 in der Fassung vom 01.02.2021 die immissionsschutzrechtliche Genehmigung gemäß § 16 Absatz 1 BImSchG zur wesentlichen Änderung des ge…”
supportsoperatorConsentModelUnit capacityFoundation+2 more
[2]
Parkwind2021-06-15◆ JERA Nex bp - Parkwind | Arcadis Ost 1 r…
"Arcadis Ost 1 reaches financial close on global wind day [...] 257MW [...] 27 Vestas V174 - 9,5MW wind turbine generators [...] successful in the 2018 auction [...] awarded a market premium [...] abo…
supportsFinal investment decisionOffshore constructionTurbinesModelUnit capacity+1 more
[3]
[4]
[6]
Parkwind / JERA Nex bp Parkwind2024-12
“257 MW [...] 27 turbines [...] inaugurated on December 5th 2023 [...] 19 km off Rügen Island in the federal state of Mecklenburg-Western Pomerania [...] Parkwind used a floating turbine installation m…”
supportsCommercial operationTurbinesTotal capacityDistance from shoreCoordinates
[7]
Vattenfall2021-07-29◆ Vattenfall takes on direct marketing for…
“Vattenfall will be marketing the Arcadis Ost 1 offshore windfarm [...] operators of newly installed renewable generation in Germany are obliged to sell the electricity they produce directly on the mar…”
supportsMechanismDetail
[8]
50Hertz2024◆ 50hertz.com > Grid > Grid developement >…
“Ostwind 2 is the project to connect the Baltic Sea wind farms Arcadis Ost 1 and Baltic Eagle to the German extra-high voltage transmission grid [...] The connection to the German extra-high voltage tr…”
supportsStatusConnection point
[14]
Parkwind2023-07-26◆ JERA Nex bp Parkwind | Acquisition of Pa…
“JERA Co., Inc. successfully closed its acquisition of 100% of the shares of Parkwind NV from Virya Energy [...] Starting as of today, Parkwind will operate as part of JERA Co., Inc.”
supports↳ parent
Trade press4
[5]
offshoreWIND.biz2023-12-05◆ Parkwind's Arcadis Ost 1 Offshore Wind F…
Press report — cited, not quoted; read it at the source link.
supportsFirst powerCommercial operationCOD historyTurbinesModel
[9]
[11]
[12]