Choshi Offshore Wind (R1 withdrawn — re-auction)
Located off Choshi City, Chiba Prefecture, in the Pacific Ocean. Distinct from the Choshi Offshore Demonstration turbine (operational).
Status
On Holdlifecycle stage
UnlikelyHafrok delivery likelihood
Ownership
—
Location
JapanNorthwest Pacific
Technology
Capacity
403 MW ◇
Turbines
31 × 13 MW ◇
Model
GE Haliade X ◇
Foundation
—
Site & conditions
Site rights
Seabed rights held ∴
Origination
Japan Offshore Wind Round 1 (general sea-area public solicitation) · 2021 ·
Water depth
16–20 m ≈
Wind speed
8.4 m/s @ 150 m ≈
Revenue & grid
Offtake
Other withdrawn ◇
Grid
Not recorded ◇
Connection
Tokyo Electric Power (TEPCO) grid (Chiba) ◇
Schedule
FID
Not taken
COD · announced
2031 ○
COD · Hafrok
for registered readers
On hold since
27 Aug 2025 ◆
Delivery outlook modelled by Hafrok · calibrated on delivered projects
UnlikelyHafrok's delivery likelihood for Choshi Offshore Wind (R1 withdrawn — re-auction)
On hold. The developer's last guidance was 2031; Hafrok's view of a restart is for registered readers.
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Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
1 dated milestone on the spine, each with its source · 1 recorded ownership deal 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 10 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
[6]
Chiba Prefectural Government (Environmental Policy Division)2026-08-21◆ （仮称）銚子市沖洋上風力発電事業（法対象事業）〔事業者：東京電力リニューアブルパ…
“東京電力リニューアブルパワー株式会社 (仮称)銚子市沖洋上風力発電事業 / 銚子市沖（約4,000ヘクタール） / 設置する発電所の出力：最大420,000キロワット（単機出力15,000キロワットから20,000キロワット、最大27基） / 送付：令和8年8月20日 公告：令和8年8月21日 縦覧期間：令和8年8月21日から令和8年9月25日まで (English: Tokyo Electric…”
supportsStatus note
Auction results1
[9]
Aquilo Energy / EEAS2026-06-22◆ jp-round1-2021-jp-tenders-study
Japanese offshore-wind tenders study: 30-yr occupancy permit, scheduled operation <=8 years after Occupancy Plan certification
supportsOfftake history
Auction pipeline1
[10]
Shulman Advisory2026
Japan to re-auction the three Round-1 sites (Noshiro-Mitane-Oga, Yurihonjo, Choshi) dropped by Mitsubishi, as early as 2026 with a revised price-floor/ceiling framework.
supportsJapan Round 1 re-auction (Noshiro-Mitane-Oga, Yurihonjo, Choshi)
Trade press6
[2]
[3]
[4]
[5]
[7]
offshoreWIND.biz2026-08-26◆ TEPCO Starts EIA Process for New Choshi …
Press report — cited, not quoted; read it at the source link.
supportsStatus note
[8]
offshoreWIND.biz2025-08-27◆ Mitsubishi Decides to Exit Three Offshor…
Press report — cited, not quoted; read it at the source link.
supportsOn hold
Unverified import1
[1]
Early access