Happo Noshiro Offshore Wind (Round 2)
Located in Sea of Japan off Akita Prefecture. Iberdrola's first offshore wind project in Japan via the JRE partnership.
Status
Advanced Developmentlifecycle stage
ExpectedHafrok completion outlook
Ownership
HNHappo-Noshiro Offshore Wind GK — 100% ◆
Location
JapanSea of Japan (East Sea)
Technology
Capacity
375 MW ◇
Turbines
—
Foundation
—
Site & conditions
Site rights
Seabed rights held ∴
Origination
Japan Offshore Wind Round 2 (general sea-area public solicitation) · 2023 ·
Water depth
9–27 m ≈
Wind speed
7.6 m/s @ 150 m ≈
Revenue & grid
Offtake
Premium · 3 JPY_per_kWh ◇
Grid
—
Schedule
FID
Not taken
COD · announced
Jun 2029 ◇
COD · Hafrok
2029 expected
Delivery outlook modelled by Hafrok · calibrated on delivered projects
2029
expected year of commercial operation
Chance of delivery
≈77%
estimated chance this project reaches commercial operation
Advanced Development projects complete ≈75% of the time on Hafrok's record. A secured offtake contract lifts this one above that; a market with a thinner delivery record and technical complexity pull the other way.
COD outlook
If it completes, when — Hafrok’s probability by year (teal)
| Year | Probability |
|---|---|
| 2028 | 3.9% |
| 2029 (expected) | 50.2% |
| 2030 | 29.5% |
| 2031 | 10.6% |
| 2032 | 3.8% |
| 2033 | 1.4% |
| 2034 | 0.6% |
How Hafrok got this date
1
Starting point: the last dated milestone
Consent granted in
2025. From there Hafrok adds how long similar projects (in developing offshore-wind markets) took to reach commercial operation, measured on projects that have delivered.2
Typical timing
Starting point plus the typical remaining time gives a middle estimate of
2030; the faster quarter of similar projects would be done by 2028, the slower quarter not until 2030.3
Result
Expected commercial operation
2029, likely range 2028–2030 (the middle half of outcomes for similar projects). The developer's announced date falls inside that likely range, so the announced date is adopted.4
Year-by-year chart
The bars spread that estimate across years using how similar projects actually slipped against their dates — more often late than early, which is why the bars lean right.
5
Chance of delivery — separate from timing
Start from the share of Advanced Development projects that went on to complete — ≈75%, measured on Hafrok's record of delivered and abandoned projects, with an allowance held back where that record cannot yet speak (projects still unresolved, changed market conditions). Consented projects have historically completed at very high rates, but the 2023–25 downturn showed consented-but-unfinanced projects can still fail — the estimate holds back for the offtake and financing gates still ahead. Then adjust for this project's own evidence — offtake, market, size, technical complexity — to ≈77%, which rates it
Expected on Hafrok's four-step delivery scale (Delivering · Expected · Prospective · Fragile).Project timeline & ownership verified milestones on the spine · ownership from Hafrok’s transactions record
Origination · 2023-12
Japan Offshore Wind Round 2 (general sea-area public solicitation)
- Awarded to
- Japan Renewable Energy (ENEOS) / Iberdrola / Tohoku EPCO
- Basis
- integrated tender
Founding JV · 2024-03
Japan Renewable Energy Corporation (JRE) · Iberdrola Renewables Japan LLC · Tohoku Electric Power Co. Inc. · Akita Bank Ltd. — On 22 March 2024, METI and MLIT announced the selection of GK Happo Noshiro Offshore Wind — a consortium of Japan Renewable Energy Corporation (JRE, the reference company; a subsidiary of ENEOS Corporation), Iberdrola Renewables Japan LLC, Tohoku Electric Power Co. Inc., and Akita Bank Ltd. — as the winner of the Round 2 offshore wind auction for the Happo Town and Noshiro City sea area, Akita Prefecture. Planned capacity: 375 MW (25 × 15 MW fixed-bottom turbines). Committed COD: June 2029. Bid price: JPY 3/kWh. The Round 2 award for this area was delayed (announced separately in March 2024 vs. the three other Round 2 winners in December 2023) because three total consortia bid for this area and the assessment took additional time.
Evidence
- eneos-re.com — GK Happo Noshiro Offshore Wind Selected as Offshore Wind Power Producer for Project Offshore Happo and Noshiro, Akita ↗ 2024-03 ◆ held
- iberdrola-renewables.jp — Consortium of Japan Renewable Energy Corporation, Iberdrola and Tohoku Electric Power to build 375 MW offshore wind farm in Akita Prefecture, Japan ↗ 2024-03 ◆ held
- whitecase.com — Japan Offshore Wind Update - Round 2 Results & Round 3 Process ↗ 2024-03 ◆ held
- offshoreWIND.biz — Three Consortia Selected in Japan's Offshore Wind Tender, Fourth Winner to Be Announced in March 2024 ↗ 2024-03 ◆ held
From the auction results — the round that created the project; founding JV from Hafrok’s transactions record.
Dashed tick marks today (9 Sep 2026). The ▲ below the spine is the developer-announced COD. The teal diamond on the spine is origination — the seabed award or round that created the project. Every other ownership event 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 contract duration and price levels · money of the day
375 MW contracted — tender award
● Tender award · Japan Offshore Wind Round 2 (general sea-area public solicitation)
Price3 JPY/kWh ·Capacity375 MWAwardedDec 2023Term20 yrs
Installation how the build is going · from satellite counts and Hafrok’s registers
Installation not started
nothing to count yet: the satellite tracker begins when offshore construction does
Installation · on record
StageAdvanced Development
Offshore constructionnot started
Expected start of operation2029-06
Sources & verification
1/11 fields verified · rests on 9 sources (1 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.
Operator1
[2]
METI/MLIT2024-03-22◆ Round 2 Happo-Noshiro offshore wind oper…
"選定事業者：合同会社八峰能代沖洋上風力、構成員：ジャパン・リニューアブル・エナジー株式会社、 イベルドローラ・リニューアブルズ・ジャパン株式会社、東北電力株式会社。 発電設備出力：３７.５万kW（１.５万kW×２５基、Vestas製）。 運転開始予定時期：２０２９年６月。" (Translation: Selected operator: Happo Noshiro Offshore Wind …
supportsCommercial operationTotal capacityMechanismDetail
Auction results1
[9]
Aquilo Energy / EEAS2026-06-22◆ jp-round2-2023-jp-tenders-study
Japanese offshore-wind tenders study: 30-yr occupancy permit, scheduled operation <=8 years after Occupancy Plan certification
supportsTender award · Japan Offshore Wind Round 2 (general sea-area public solicitation)
Trade press6
[3]
Wind Journal2025-03◆ 【洋上風力第2ラウンド】「秋田県八峰町・能代市沖」の公募占用計画を認定、風車施工…
"【洋上風力第2ラウンド】「秋田県八峰町・能代市沖」の公募占用計画を認定 … 経済産業省・国土交通省は2025年3月14日、秋田県八峰町及び能代市沖の洋上風力発電事業に係る 公募占用計画を認定した。ENEOSリニューアブル・エナジー（ERE）、イベルドローラ・リニューアブルズ・ ジャパン、東北電力の3社で構成する特別目的会社が事業者。運転開始予定：2029年6月。 陸上工事：2026年1月、基礎施…
supportsConsentConsent granted
[4]
DeepWind (third-party aggregator)2026-02
“FIP supply price: 3 JPY/kWh. SPV Name: Happo–Noshiro Offshore Wind GK. Consortium: ENEOS Renewable Energy Corporation (lead), Iberdrola Renewables Japan, Tohoku Electric Power. As of February 25, 2026…”
supportsStrike / price
[5]
[6]
[7]
[8]
Unverified import1
[1]
unknown
Press report — cited, not quoted; read it at the source link.
supportsTotal capacityWater depthCoordinates