'Blue Oracle' | First French floating wind 'macrozone' data flows from Mediterranean deeps

Metocean intel to be drawn from new-look Ocergy Blue Oracle databuoy moored off Leucate expected to be key to large-scale deepwater developments in southern European plan

Ocergy floating databuoy installed in French Mediterranean
Ocergy floating databuoy installed in French MediterraneanFoto: F Lebrun / SeaSkyMotion

Offshore environmental data key to the construction of gigascale floating wind arrays in French Mediterrean is now flowing ashore via a new-look research buoy brought online this week in deepwater off Occitanie.

The ‘Blue Oracle’ unit, developed by technology outfit Ocergy to collect high resolution metocean and bio-diversity data, will remain moored at site, 30km off Leucate, for one year, as part of a project involving French energy agency Ademe and an industry group led by developer Skyborn Renewables.

“This key milestone closes the first year of the project, and the scientific teams are excited to embark in the data acquisition and analysis year-long phase, which is expected to provide valuable biodiversity and environmental information,” said Christian Cermelli, president of Ocergy subsidiary Ocergie SAS.

The ‘Blue Oracle’ acquisition buoy, a one-third scale version of the company’s OCG steel semisubmersible floating wind platform design, was manufactured by Croatian shipyard Brodosplit, assembled at Euroports Marine Renewable Energy terminal in Port-la-Nouvelle, and installed in 95 metres of water by Jifmar using Vryhof anchors and moorings. The unit features Vaisala Windcube lidar.

Schematic of the technology features of Ocergy's floating data aquisition buoyFoto: Ocergy

Cermelli said: “This buoy will also serves as a one-third scale pilot of our OCG-Wind floating offshore wind foundation with important return on experience expected to further mature our floating offshore wind design”.

Speaking to Recharge when the project was unveiled last year, Ocergy CEO Dominique Roddier said the OCG data buoy was engineered to provide “stablity [that would allow the onboard Lidar] to characterise wind turbulence, which is inaccurately measured with existing solutions, which will have a major impact on the de-risking and accuracy of a floating wind farm's business plan”.

“This project will [also] validate a tool that is part of the blue economy logic: facilitating the sharing of maritime spaces among the various stakeholders through a sustainable management of natural resources.”

Along with the project partners, the pilot has a scientific committee composed of CRPMEM, Ecocean, Ocean Winds, Semantic-TS, Chorus, and Bureau Veritas that Ocergy credited with “providing important input”.

The full-scale Ocergy OCG-Wind floating wind design – first revealed in Recharge in 2021is at the heart of several pioneering projects, including the pioneering 100MW Salamander off Scotland, being developed by Orsted, Simply Blue, and Subsea7, as a deepwater wind-powered hydrogen generation demonstrator.
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Published 3 March 2023, 13:08Updated 3 March 2023, 17:30
Skyborn RenewablesOcean WindsOcergyFranceMediterranean