Akita Port Offshore Wind Farm
Akita Offshore Wind Corporation (AOW) consortium: Marubeni, JERA, RWE.
Status
Operationallifecycle stage
Ownership
AOAkita Offshore Wind Corporation — 100% ◇
MCMarubeni Corporation / OCOBAYASHI CLEAN ENERGY CORPORATION / … ◆
Location
JapanSea of Japan (East Sea)
Technology
Capacity
55 MW ◇
Turbines
13 × 4.2 MW ◆
Model
Vestas V117 4-2 ◆
Foundation
—
Site & conditions
Site rights
Seabed rights held ∴
Water depth
3–14 m ≈
Wind speed
7.1 m/s @ 100 m ≈
Revenue & grid
Offtake
PPA ◆
Grid
Not recorded ◆
Connection
Grid connection secured ◆
Schedule
FID
3 Feb 2020 ◆
COD
2023 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
4 dated milestones on the spine, each with its source · 2 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 PPA contract's terms · 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 12 sources (6 primary) · ◆ 5 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
[10]
Akita Prefecture (秋田県)2026-02-10◆ 秋田港洋上風力発電事業に係る環境影響評価の概要
“秋田港洋上風力発電事業 ... 評価書 ... 公告日 ... 令和元年７月１０日”
supportsConsentConsent granted
Operator5
[3]
Akita Offshore Wind Corporation
“Marubeni Corporation, OBAYASHI CLEAN ENERGY CORPORATION, Tohoku Electric Power Co.,Inc., Cosmo Eco Power Co., Ltd., The Kansai Electric Power Co., Inc., Chubu Electric Power Co., Inc., The Akita Bank,…”
supports↳ parents
[4]
[11]
Marubeni Corporation2020-02-03◆ Implementation of Offshore Wind Farm Pro…
“it has decided to implement the construction, operation and maintenance of offshore wind farms at Akita Port and Noshiro Port ... The loan agreements were concluded (hereinafter, “Loan”) today.”
supportsFinal investment decision
[12]
Akita Offshore Wind Corporation (秋田洋上風力発電株式会社)2026-10-12◆ 洋上工事 工事記録
“2021年9月19日に秋田港において最後の基礎杭（モノパイル（MP））打設を完了しました。 ... 2021年5月12日に能代港において自航式SEP船（自己昇降式作業台船）であるSeajacks社Zaratan号による洋上基礎工事を本格着工しました。”
supportsConstruction startSite rights
[13]
Agency for Natural Resources and Energy, METI (資源エネルギー庁)2026-08-31◆ 再生可能エネルギー事業計画認定情報 公表用ウェブサイト — 05 秋田県 (20…
“U996311B05 | 秋田洋上風力発電株式会社 | 井上 聡一 | 秋田県能代市能代町字日和山下１８－３２ | 0185-74-7715 | 洋上風力 | 54600 | 秋田県秋田市下新城中野字街道端西２３４－１ | 2 | - | 43248 | - | 2023年10月 | - | - | - | 0-20% | 2043年1月”
supportsMechanismDetail
OEM1
[9]
Mitsubishi Heavy Industries (MHI Vestas Offshore Wind A/S order announcement)2020-03-19
“MHIヴェスタス（MHI Vestas Offshore Wind A/S）は、秋田県で進められている洋上風力発電所プロジェクト向けに、ロータ直径117m 単機出力4,200kWの洋上風力発電設備（V117-4.2MW）33基を正式に受注しました。同社の日本国内における初の正式受注となり、秋田港内に建設される「秋田洋上風力発電所」に13基、能代港内の「能代洋上風力発電所」に20基を納入する計画です…”
supportsTurbinesModelUnit capacity
Trade press4
[5]
Global Energy Monitor (GEM.wiki)2026-07-02
“Akita Port (Marubeni) Offshore wind farm (たち秋田洋上風力発電) is an operating wind farm in Akita Port, Akita Prefecture, Japan.”
supportsCommercial operationStatusConnection pointCoordinates
[6]
[7]
Power Technology2023
Press report — cited, not quoted; read it at the source link.
supportsTotal capacity
[8]
Unverified import1
[1]
unknown◆ OUR PROJECT/Akita Offshore Wind Corporat…
supportsTotal capacityWater depthCoordinates
Early access