Oleron 1 (Sud-Atlantique)
Part of the broader Sud-Atlantique offshore wind initiative. Located approximately 40 km off Ile d'Oleron in the Bay of Biscay, covering 180 km2.
Status
On Holdlifecycle stage
FragileHafrok completion outlook
Ownership
—
Location
FranceNortheast Atlantic
Technology
Capacity
1,000 MW ◇
Turbines
—
Foundation
—
Site & conditions
Site rights
State-designated France AO10 (pluriannual offshore tender, ~10 GW) ∴
Water depth
60–60 m ◇
Distance from shore
40 km ◇
Wind speed
8.4 m/s @ 150 m ≈
Revenue & grid
Offtake
Other ◇
Grid
No agreement · 2025-03 ◆
Connection
RTE-Nexans HVDC cable framework agreement (announced 25 March … ◆
Schedule
FID
Not taken
COD · Hafrok
—
Delivery outlook modelled by Hafrok · calibrated on delivered projects
—
on hold — no credible date; the chart shows when a restarted project might complete
Chance of delivery
≈14%
estimated chance this project reaches commercial operation
Projects put on hold complete ≈15% of the time on Hafrok's record. A secured offtake contract lifts this one slightly; a market with a thinner delivery record, its size and technical complexity pull a little the other way. Only a restart would change that — there is no dated schedule to judge against.
COD outlook
If it completes, when — Hafrok’s probability by year (teal)
| Year | Probability |
|---|---|
| 2030 | 20.0% |
| 2031 | 20.0% |
| 2032 | 20.0% |
| 2033 | 20.0% |
| 2034 | 20.0% |
How Hafrok got this date
1
On hold — no dated schedule
The project is recorded as On Hold, so no sequence of milestones can be trusted. Hafrok publishes no expected year; the chart instead spreads the remaining chance of completion over the years a restarted project might finish in.
2
Chance of delivery — separate from timing
Start from the share of On Hold projects that went on to complete — ≈15%, 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). Historically only a minority of projects put on hold returned to delivery — the estimate reflects that. Then adjust for this project's own evidence — offtake, market, size, technical complexity — to ≈14%, which rates it
Fragile on Hafrok's four-step delivery scale (Delivering · Expected · Prospective · Fragile).Revenue & offtake route to market — open
No offtake secured — route to market open
AO7 French offshore CRE tender — zero bids submitted by April 2025 deadline; tender officially failed September 2025. No offtake contract awarded. ◇
The routes describe what exists in this market — not a prediction of which the project will take. Timing math for the auction gate lives in the delivery outlook above.
Next visible round · from the auction calendar
France AO10 (pluriannual offshore tender, ~10 GW) ◇
LAUNCHED 11-12 June 2026 (call-for-tenders notice + CRE technical specs); bid deadline 12 Oct 2026; CRE opinion early 2027; ministerial award Feb 2027.
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
StageOn Hold
Offshore constructionnot started
Expected start of operationnot stated
Grid connection
from Hafrok’s substation, converter and cable registers
Offshore platforms · 1
HVDC systemOleron HVDC (Offshore)·1250 MW · ±320 kV · ordered, expected 2033
HVDC systemOleron HVDC (Onshore)·1250 MW · ±320 kV · ordered, expected 2033
Export & onshore
Export cableOleron Export Cable·HVDC subsea · Nexans · planned · to Onshore converter (TBD)
Converter supplierHitachi Energy·Oleron HVDC (Offshore) · Chantiers de l'Atlantique (Saint-Nazaire) · for RTE
Converter supplierHitachi Energy·Oleron HVDC (Onshore) · Chantiers de l'Atlantique (Saint-Nazaire) · for RTE
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
1/14 fields verified · rests on 8 sources (3 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.
Operator3
[2]
RWE2023-08-31◆ RWE and VALOREM have partnered to jointl…
“AO7 South Atlantic offshore wind project: approximately 1,000 MW installed capacity, some 40 kilometres off the coast of Oléron Island, water depth around 60 metres average, maximum project area 180 k…”
supportsTotal capacityWater depthDistance from shore
[6]
Nexans2025-03-25◆ Nexans wins major frame agreement with r…
“Nexans has secured a major framework agreement with RTE for the design, manufacturing, and supply of HVDC cables, which will be used to connect the Centre Manche 1 & 2 and Oléron offshore wind farms t…”
supportsStatusConnection point
[7]
DGEC — Ministère de la Transition écologique (eoliennesenmer.fr)2026-08-25◆ French Eoliennes en mer register (DGEC),…
“Register node 807 (node--type-project) at /facades-maritimes-en-france/facade-sud-atlantique/oleron/oleron-1 — title 'Oleron 1'; page text 5836 chars, hash b714449db0b63eea…. Identifying text: Le parc…”
supportsRegister entry
Auction pipeline1
[8]
CRE2026◆ cre-ao10-avis
CRE avis on the AO10 cahier des charges — one procedure, ~11 parks / ~10 GW, fixed + floating.
supportsFrance AO10 (pluriannual offshore tender, ~10 GW)
Trade press4
[1]
Offshore Wind Biz2025-09-24◆ No Bids Submitted for 1 GW Oléron Offsho…
Press report — cited, not quoted; read it at the source link.
supportsConsentCOD historyTotal capacityMechanismDetail+2 more
[3]
Enerdata2022
Press report — cited, not quoted; read it at the source link.
supportsTotal capacity
[4]
[5]