SeaMade
SeaMade is the merger of two Belgian offshore wind concessions: Seastar (252 MW, 30 turbines) and Mermaid (235 MW, 28 turbines), jointly developed as SeaMade NV.
Status
Operationallifecycle stage
Ownership
Location
BelgiumNorth Sea
Technology
Capacity
487 MW ◆
Turbines
58 × 8.4 MW ◆
Model
Siemens Gamesa SG 8-0-167 DD ◆
Foundation
Monopile ◆
Site & conditions
Site rights
Seabed rights held ∴
Origination
Belgian offshore wind zone — domain concessions (Thornton Bank–Bligh Bank) · 2004 ·
Water depth
38–40 m ◆
Distance from shore
40 km ◆
Wind speed
9.4 m/s @ 100 m ≈
Revenue & grid
Offtake
Certificate ◆
Grid
Secured ◆
Connection
Elia Modular Offshore Grid (MOG); 220-245 kV XLPE submarine … ◆
Schedule
FID
3 Dec 2018 ◆
COD
2020-Q4 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
5 dated milestones on the spine, each with its source · 3 recorded ownership deals from Hafrok's transactions record · the developer's announced-COD history
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Revenue & offtake contract terms, price levels and the route to market
the contract terms on record · price over time in money of the day · the routes to market and the next visible round
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Installation how the build is going · from sourced statements and Hafrok's registers
construction status and turbines standing · vessel and port contracts · the grid connection and whether it is ready in time
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Sources & verification
Rests on 17 sources (12 primary) · ◆ 6 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.
Operator6
[1]
Eneco2018-12-03◆ SeaMade reaches Financial Close for its …
"SeaMade NV ... reaches Financial Close for its 487 MW Offshore Wind Farm in the Belgian North Sea ... Financial Close Date: December 3, 2018 ... Ownership Structure: Otary RS NV: majority stake, ENGI…
supportsFinal investment decisionTurbinesUnit capacityTotal capacity
[5]
Otary2021-10-20
“SeaMade was developed by a unique partnership between Otary, ENGIE – now Ocean Winds – and Eneco ... Otary: 70% stake in SeaMade concessions ... SeaMade NV ... 487 MW total installed capacity ... 1.8 …”
supportsBackground
[6]
Eneco2019-09-10
"Offshore Construction Start Date: September 10, 2019 ... Port Used for Construction/Marshalling: Maasvlakte 2 harbor in the Port of Rotterdam (foundation loadout) ... DP2 offshore installation vessel…
supportsOffshore construction
[8]
Port of Ostend2020-03-25
“First parts of wind farm SeaMade unloaded at the REBO terminal in Port Oostende ... The terminal will eventually receive 58 nacelles, 174 tower sections, and 174 blades for the complete installation .…”
supportsmarshalling
[19]
Royal Belgian Institute of Natural Sciences (MUMM)2026-10-12◆ MUMM permit register: milestones for the…
"MERMAID" ... "Environmental permit" ... "Granted" ... "Minister responsible for the marine environment" ... "2015-04-13T02:00:00+02:00"
supportsConsentConsent granted
[20]
Royal Belgian Institute of Natural Sciences (MUMM)2026-10-12◆ MUMM permit register: milestones for the…
"SEASTAR" ... "Environmental permit" ... "Granted" ... "Minister responsible for the marine environment" ... "2014-02-07T01:00:00+01:00"
supportsConsentConsent granted
Financier1
[2]
European Investment Bank2018-12-03
“EUR 250 million EU-financing for SeaMade offshore wind farm in Belgium ... Financial Close Date: 30 November 2018 (signing date) ... 487 MW combined capacity across 58 turbines deployed at two sites l…”
supportsTurbinesTotal capacityWater depthDistance from shore
Auction results1
[22]
RBINS / MUMM (Brabant, Degraer & Rumes, 2011 — Offshore wind farms in the Belgian part of the North Sea, ch. 2)2011◆ rbins-mumm-2011-belgian-owf-ch2
Table 1, "Overview of the dates when the projects were granted a domain concession and an environmental permit": C-Power 27/06/03 · Belwind 5/6/2007 · Eldepasco 15/5/2006 · Norther 5/10/2009 · Rentel …
supportsConcession · Belgian offshore wind zone — domain concessions (Thornton Bank–Bligh Bank)
Trade press9
[3]
Power Technology (NS Energy)2021-10
Press report — cited, not quoted; read it at the source link.
supportsTurbinesModelUnit capacityTotal capacityFoundation+3 more
[4]
Offshore Wind Biz2021-10-20◆ Belgium's Largest Offshore Wind Farm Off…
Press report — cited, not quoted; read it at the source link.
supportsCommercial operationCOD history
[11]
Enerdata2017-10-31
Press report — cited, not quoted; read it at the source link.
supportsMechanismDetail
[12]
Offshore Wind Biz2019-09-11
Press report — cited, not quoted; read it at the source link.
supportsStatusConnection point
[13]
Power Technology2024
Press report — cited, not quoted; read it at the source link.
supportsowner
[14]
Tethys (Pacific Northwest National Laboratory)2026-04-16
“Key milestones include the issuance of domain concessions for SeaStar and Mermaid by the State Secretary for Energy in 2012, following the withdrawal of a previous concession for SeaStar in 2011. Envi…”
supportsConsentConsent granted
[15]
Offshore Wind Biz2020-07-02
Press report — cited, not quoted; read it at the source link.
supportsFirst power
[16]
[21]
Offshore Wind Biz2017-10-27◆ Belgium Agrees on EUR 79/MWh for Three O…
Press report — cited, not quoted; read it at the source link.
supportsMechanismDetail
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