Amrumbank West
Located 35km north of Helgoland, 37km west of Amrum island.
GermanyTechnology
Capacity
302 MW ◆
Turbines
80 × 3.6 MW ◆
Model
Siemens Swt 3-6-120 ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Water depth
20–25 m ◆
Distance from shore
35 km ◆
Wind speed
9.9 m/s @ 100 m ≈
Revenue & grid
Offtake
Premium ◆
Grid
Secured · Oct 2015 ◆
Connection
TenneT HelWin2 HVDC (±320kV) via the HelWin beta converter … ◆
Schedule
FID
15 Dec 2011 ◆
COD
Oct 2015 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Corporate · 2018-03
E.ON → RWE 100%
- Stake
- 100%
- Consideration
- not disclosed
- Announced
- 2018-03
- Closed
- 2019-10
- Project stage
- operational
E.ON's 100% transferred to RWE as part of E.ON/RWE/Innogy asset swap. Not arm's-length; no project-level consideration. Now 100% RWE-owned.
Evidence
From Hafrok’s transactions record
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
RegimeThe farm company's accounts state that Amrumbank West (EEG 2014) sold by direct marketing with the EEG market premium under the compressed tariff: 19.4 ct/kWh (194 EUR/MWh) in the first operating years, stepping down from April 2023 to 154 EUR/MWh and then 39 EUR/MWh; the last turbine reached 39 EUR/MWh in December 2024. From 2025 no premium was expected at market prices and the output is sold in 'other direct marketing' (no premium) through RWE Supply & Trading at a market-based price.
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 sourced statements and Hafrok’s registers
Installation complete
Installation · on record
StageOperational
In operation since2015-10
Offshore construction2014-01 → 2015-10
Construction ports
PortCuxhaven ◆·foundations · quay 734 m · crane 650 t · draft 12.7 m
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 2
Offshore substationUmspannwerk Amrumbank West·33/155 kV · in service 2015 · owner E.ON (wind farm owner) — farm-owned AC collector platform, not TSO-owned
HVDC systemHelWin2·690 MW · ±320 kV · in service 2015-06 · shared with Kaskasi
Converter supplierSiemens·HelWin2 · Heerema, Zwijndrecht, Netherlands · 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
Rests on 15 sources (12 primary) · ◆ 11 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
[3]
Bundesamt für Seeschifffahrt und Hydrographie (BSH)2004-06◆ Genehmigung Offshore-Windpark Amrumbank …
“Eckkoordinaten (WGS 84) des Gebietes, in dem die Anlagen errichtet werden, lauten: 07° 38' 26" Ost und 54° 32' 20" Nord 07° 38' 26" Ost und 54° 30' 23" Nord 07° 46' 37" Ost und 54° 30' 23" Nord 07° 46…”
supportsCoordinates
[12]
Bundesnetzagentur — Marktstammdatenregister2026-08-23◆ Marktstammdatenregister (MaStR) offshore…
“Park row "Amrumbank West": 22 units, 83.16 MW gross, statuses {'In Betrieb': 22}, operators ['Amrum-Offshore West GmbH'], commissioned 2015-05-02..2015-08-31, planned None..None. Park row "Amrumbank-W…”
supportsRegister entry
Operator8
[1]
RWE2025◆ Amrumbank West offshore wind farm | RWE …
“The Amrumbank wind farm covers an area of approximately 32 km² and is located around 35 km north of the island of Heligoland and 37 km west of the North Frisian island of Amrum, inside the German Excl…”
supportsOnshore constructionOffshore constructionCommercial operationSite rightsTurbines+7 more
[4]
RWE2023-01-16◆ Green electricity from Nordsee Ost and A…
“both wind farms currently receive funding under the Renewables Act (Erneuerbare-Energien-Gesetz, EEG), which is set to expire from 2024 and 2025 respectively … 80 wind turbines with an installed capac…”
supportsTotal capacity
[9]
[13]
RWE2025-02-07◆ Secondary reserve from offshore wind pow…
“RWE plans to offer a system-stabilising secondary reserve, also known as automatic frequency restoration reserve, for the German power grid via its offshore wind farm, Amrumbank West. The transmission…”
supportsTurbinesTotal capacity
[14]
Bundesanzeiger2016-12-31◆ Amrum-Offshore West GmbH, Düsseldorf - J…
“Der Anstieg des Materialaufwands im Vergleich zum Vorjahr resultiert aus der Inbetriebnahme des Windparks im Oktober 2015.”
supportsCommercial operation
[17]
Unternehmensregister2025-02-04◆ Amrum-Offshore West GmbH, Düsseldorf - J…
“Die Amrum-Offshore West GmbH mit Sitz in Düsseldorf ist im Handelsregister B des Amtsgerichts Düsseldorf unter HRB 76022 eingetragen. ... "Für den vermarkteten Strom wird eine Marktprämie gewährt, die…”
supportsMechanismDetail
[18]
Unternehmensregister2026-08-06◆ Amrum-Offshore West GmbH, Düsseldorf - J…
“Die Amrum-Offshore West GmbH mit Sitz in Düsseldorf ist im Handelsregister B des Amtsgerichts Düsseldorf unter HRB 76022 eingetragen. ... "Der Windpark Amrumbank West ist 2015 in Betrieb genommen word…”
supportsMechanismDetail
[19]
E.ON SE2011-12-15◆ E.ON: multi-billion-euro program for ene…
“Offshore wind farms in Germany, Sweden and UK under construction ... In the German North Sea, E.ON is building Amrumbank West, a deepwater wind farm that will cost about EUR1 billion and enter service…”
supportsFinal investment decision
Trade press4
[2]
evwind (relaying E.ON press release)2015-10-22◆ E.ON’s Amrumbank West offshore wind farm…
"All 80 wind turbines are connected to the network … full installed capacity of 288 megawatts now operational … the first turbine began generating electricity in May 2015 … Offshore construction began…
supportsFirst powerCommercial operationTurbinesModel
[6]
Offshore Wind Biz2016-02-02
Press report — cited, not quoted; read it at the source link.
supportsTotal capacity
[8]
NS Energy2021
Press report — cited, not quoted; read it at the source link.
supportsModelUnit capacityFoundationfoundations
[11]
Encyclopaedic1
[10]
Wikipedia (German)2026
“Nach Antrag vom 16. Juni 2000 ... wurde der Bau und Betrieb des Windparks mit 80 Windenergieanlagen (WEA) am 9. Juni 2004 vom Bundesamt für Seeschifffahrt und Hydrographie (BSH) auf Grundlage der Seea…”
supportsConsentConsent granted