Italy's Prysmian has announced that it has successfully completed Sea Trial tests for the installation in ultra-deep waters of a 500 kV HVDC MI1 submarine cable at a depth of 2,150 meters, the highest achieved so far, thus setting new market standards. The company explained that "this cable with non-metallic armor has been designed with a synthetic fibre composite material (HMSF - High Modulus Synthetic Fibres), defining a new generation of technologies in cable. The use of an innovative armor that can be up to 50% lighter than steel in water, along with the vessel state-of-the-art Leonardo da Vinci cable layer, will allow to install and maintain the cable for Terna's project Tyrrhenian Link to a sea depth of over 2,000 meters, the highest ever achieved with a power cable". The same "light" technology had already been used in 2019 for the Evia-Andros-Tinos interconnection at 550 m of sea depth and in 2020 for the project of Crete-Peloponnese submarine interconnection at a depth of 1,000 m.

The cable will be used as part of the project Tyrrhenian Link, a contract worth 1.7 billion euros awarded by Terna Spa in 2021. Prysmian participates in the project dealing with the design, supply and installation of over 1,500 kilometers of submarine cables in total to support the energy exchanges between Sardinia, Sicily and Campania, strengthening the energy hub of the Mediterranean.