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A Tender Call for Biscay Gulf Interconnector Seabed Survey

By: Rameeza Haq Duggal 25/03/2020 4C Offshore

Cables General Grid Interconnectors

Inelfe has issued a tender call for geophysical and geotechnical survey services in the Biscay Gulf. The investigations would be carried out to determine the detailed seabed conditions and stratigraphy with detailed characterization of materials in surface and sub-surface soil layers for the installation of submarine cables.

The Biscay Gulf interconnector between Spain and France is a joint project by Réseau Transport d’Electricité (RTE) and Red Eléctica de España (REE), developed by Inelfe on the behalf of the two TSOs. The project is supported by the European Union’s Connecting Europe Facility (CEF) to enhance secure, competitive and sustainable energy.

The Interconnection comprises a 2,000 MW link. This link is composed of 2 circuits, rated 1,000 MW each for DC operating voltage of 400 kV, comprised of 4 power cables, 4 converter station terminals located close to the 400 kV Cubnezais substation (France) and the Gatica substation (Spain).

Previously, a study performed by RTE and REE concluded soil instability very close to the Capbreton canyon, in French water. However, the issue did not have any impact over the financial viability of the project. The two TSOs conducted additional studies and analysis to determine the most appropriate technical solution.

The deadline for the receipt of tenders or requests to participate is 6th April 2020. The project is expected to be commissioned in 2025.

For more information on interconnectors, click here. Alternatively, you can view projects across the globe using 4C Offshore’s interactive map.

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A Tender Call for Biscay Gulf Interconnector Seabed Survey

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