Trianel Windpark Borkum II
Located approximately 45 km north of Borkum Island in the German North Sea EEZ.
Status
Operationallifecycle stage
Ownership
EWEWE AG — 37.5% ◆
EOewz Offshore Borkum GmbH — 24.51% ◆
TWTrianel Windkraftwerk Borkum GmbH & Co. KG (Trianel + 17 … ◆
Location
GermanyNorth Sea
Technology
Capacity
200 MW ◆
Turbines
32 × 6.33 MW ◆
Model
Senvion 6 2m152 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Water depth
27–33 m ◆
Distance from shore
45 km ◆
Wind speed
9.9 m/s @ 100 m ≈
Revenue & grid
Offtake
FiT ◆
Grid
Secured · 2020-06 ◆
Connection
TenneT DolWin1 / DolWin alpha HVDC converter station ◆
Schedule
FID
Apr 2017 ◆
COD
30 Jun 2020 ◆
Project timeline verified milestones only — each date carries its provenance mark
Dashed tick marks today (9 Sep 2026).
Announced-COD history: 2020-Q2→2020-06-30 · 2 recorded revisions · held (announced 2020-Q2, unchanged)
Revenue & offtake the regime the project was built under
Offtake regime on record
RegimeEEG 2014 Festvergütung (fixed feed-in compensation) — last German offshore wind farm to receive fixed EEG compensation. No auction strike price; rate set by EEG 2014 schedule.
InstrumentFiT
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
Foundations32 of 32≈100% · first seen 2018-07-04 · 13 more than the record expects — a met mast, a platform not on the register, or a survey artefact
Turbines42 of 32≈131% · first seen 2017-12-01
Latest count2021-12-30from 904 satellite passes · 2 substation platforms 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 (32 turbines + 2 platforms); the table counts turbines only
foundationsturbines up (a substation top being set in place counts here too)
Satellite image
Image taken2026-09-06≈Copernicus Sentinel-1 radar satellite, southbound pass
Farm covered100%≈the whole farm lies inside the image
Structures ringed74 confirmed · 0 not yet confirmed≈as counted on 2021-12-30 · the image is newer than the count, so a bright spot without a ring may be a structure not yet counted
Construction ports
PortEemshaven ◆·installation base · 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 · 2026-09-06
a radar picture, not a photograph: the sea is dark, steel is bright · black is beyond the edge of the image
confirmed structure (74)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 · 2
Offshore substationUmspannplattform Trianel Windpark Borkum·33/155 kV · in service 2013 · owner Infrastruktur Windkraftwerk Borkum GmbH & Co. KG (IWB) — farm-side operator, not TSO-owned · also serves Trianel Windpark Borkum I
HVDC systemDolWin1·800 MW · ±320 kV · in service 2015-07 · shared with Borkum Riffgrund 1
Converter supplierHitachi Energy (contracted as ABB; ABB Power Grids sold to Hitachi 2020)·DolWin1 · Heerema Fabrication Group (Netherlands), under EPC from ABB; topside design by Iv · 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
Sources & verification
17/18 fields verified · rests on 10 sources (10 primary) · ◆ 3 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.
Regulator3
[1]
Bundesamt für Seeschifffahrt und Hydrographie (BSH)2016-10◆ Genehmigungsbescheid Offshore-Windpark T…
"Plangenehmigung Offshore-Windenergiepark „Trianel Windpark Borkum, Bauphase 2" … Gegenstand dieser Plangenehmigung sind 34 (vierunddreißig) Windenergieanlagen mit folgenden Parametern: Rotordurchmess…
supportsConsentFoundationStatusConnection pointWater depth+1 more
[2]
Bundesamt für Seeschifffahrt und Hydrographie (BSH)2008-06◆ Genehmigungsbescheid Offshore-Windpark T…
"Genehmigung Offshore-Windenergiepark „Borkum West II" … Az.: 5111/Borkum West II/Z 1201 … Auf den Antrag der Prokon Nord Energiesysteme GmbH … werden Errichtung und Betrieb von 80 Windenergieanlagen …
supportsBackground
[12]
Bundesnetzagentur — Marktstammdatenregister2026-08-23◆ Marktstammdatenregister (MaStR) offshore…
“Park row "Trianel Windpark Borkum, Bauphase 2": 32 units, 202.56 MW gross, statuses {'In Betrieb': 32}, operators ['Trianel Windkraftwerk Borkum II GmbH ＆ Co. KG'], commissioned 2019-09-03..2020-07-01…”
supportsRegister entry
Operator6
[3]
Trianel Windkraftwerk Borkum GmbH & Co. KG2017-04-07
“Mit dem Baubeschluss im Gesellschafterkreis wurde die Grundlage für den zeitnahen Financial Close geschaffen … EWE AG: 37,5 % … Elektrizitätswerk der Stadt Zürich und Fontavis: 24,51 % … 17 Stadtwerke…”
supportsFinal investment decision
[4]
[5]
[6]
Trianel GmbH2020-07-06
“Seit dem 30. Juni 2020 drehen sich alle Rotoren der 32 Windkraftanlagen … 200 MW … der letzte Offshore-Windpark mit einer Festvergütung nach dem Erneuerbaren-Energien-Gesetz … EWE AG: 37,5 % … ewz … F…”
supportsFirst powerCommercial operationCOD historyTurbinesTotal capacity+2 more
[7]
[10]
Trianel2026
“EWE AG, ewz Offshore Borkum GmbH ... and the municipal utility cooperation Trianel together with 17 municipal utilities from Germany are involved in the wind farm.”
supportsinvestoroperator
Trade press1
[11]