Trianel Windpark Borkum I
Located 45km north of Borkum. Phase 2 (Trianel Windpark Borkum II, 200 MW) commissioned 2020.
Status
Operationallifecycle stage
Ownership
TWTrianel Windkraftwerk Borkum GmbH & Co. KG (municipal … ◇
Location
GermanyNorth Sea
Technology
Capacity
200 MW ◆
Turbines
40 × 5 MW ◆
Model
Adwen M5000 116 ◆
Foundation
Tripod ◆
Site & conditions
Site rights
Seabed rights held ∴
Water depth
25–35 m ◆
Distance from shore
45 km ◆
Wind speed
9.9 m/s @ 100 m ≈
Revenue & grid
Offtake
Other ◆
Grid
Secured · 2015-07 ◆
Connection
TenneT DolWin1 HVDC (±320 kV, 165 km cable to Dörpen West … ◆
Schedule
FID
Dec 2010 ◆
COD
Sep 2015 ◆
Project timeline verified milestones only — each date carries its provenance mark
Dashed tick marks today (9 Sep 2026).
Announced-COD history: 2015-Q3→2015-09 · 2 recorded revisions · held (announced 2015-Q3, unchanged)
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 satellite counts and Hafrok’s registers
Satellite survey
the farm as it stands, counted from satellite radar images · built before the count began, so there is no build to chart
Satellite survey
Structures standing41≈40 turbines + 1 platform expected · every expected structure seen
Surveyed2026-08-31≈from 115 satellite passes
Built2011-09 → 2015-09offshore construction to start of operation, from the record
Hafrok counts the structures standing in the sea from satellite radar images (≈) and reads the count against the turbines and platforms on record. The farm was built before this count began, so the images show it complete; they cannot date its construction. Rows marked with a dot (·) come from Hafrok’s own registers.
Satellite image
Image taken2026-09-06≈Copernicus Sentinel-1 radar satellite, southbound pass
Farm covered100%≈the whole farm lies inside the image
Structures ringed41 confirmed · 0 not yet confirmed≈as counted on 2026-08-31 · the image is newer than the count, so a bright spot without a ring may be a structure not yet counted
Construction ports
PortEemshaven ◆·pre-assembly and load-out · 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 (41)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 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 II
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 10 sources (9 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
[7]
Bundesamt fuer Seeschifffahrt und Hydrographie (BSH)2008-06-13◆ Genehmigungsbescheid Offshore-Windpark T…
"Genehmigung Offshore-Windenergiepark Borkum West II" Aktenzeichen 5111/Borkum West II/Z 1201. "80 (achtzig) WEA einschliesslich Nebenanlagen." "Nennleistung: 5 MW" "Rotordurchmesser: maximal 116 m." …
supportsConsentConsent granted
[12]
Bundesnetzagentur — Marktstammdatenregister2026-08-23◆ Marktstammdatenregister (MaStR) offshore…
“Park row "Trianel Windpark Borkum": 40 units, 200.0 MW gross, statuses {'In Betrieb': 40}, operators ['Trianel Windkraftwerk Borkum GmbH ＆ Co. KG'], commissioned 2015-02-01..2015-07-16, planned None..…”
supportsRegister entry
Operator5
[1]
Trianel Windkraftwerk Borkum GmbH & Co. KG2026-06-10
"40 wind turbines, each with 5 MW, stand firmly on so-called tripods on the seabed." "45 km off the island of Borkum" "water depth: 25-35 m" "Autumn 2015: Beginning of continuous operation."
supportsTurbinesUnit capacityTotal capacityFoundationWater depth+1 more
[2]
Trianel Windkraftwerk Borkum GmbH & Co. KG2026-06-10
"December 2010: project financing agreements are signed." "September 2011: Start of construction work. First pile driving at sea." "February 2015: the first plants are connected to the grid and put in…
supportsOffshore constructionFirst powerSite rightsModelpre-assembly and load-out
[4]
Trianel GmbH (via Presseportal)2015-09-01◆ Inbetriebnahme des Trianel Windpark Bork…
“Commissioning date September 1, 2015. 40 wind turbines, 200 MW total capacity, located approximately 45 km off Borkum. 33 municipal utilities from Germany, Austria, the Netherlands, and Switzerland. .…”
supportsCommercial operationCOD historyCoordinates
[5]
Trianel GmbH (via Presseportal)2010-12-21◆ Baubeschluss und Finanzierungsvereinbaru…
"34 Gesellschafter beschlossen ... den Baubeschluss fuer die erste Bauphase" on 21 December 2010. Financing agreements signed in Frankfurt. Total project cost exceeds EUR 700 million. EUR 550 million …
supportsFinal investment decision
[9]
Trade press2
[8]
[11]
Encyclopaedic1
[10]