Next Geosolutions (NextGeo) has been awarded as the lead partner of a temporary consortium to conduct the preliminary marine survey and environmental characterization of the new Milan–Montalto HVDC link.
The contract, promoted by Terna as part of the Hypergrid initiative, exceeds 28 million euros and positions NextGeo as the main actor with approximately 84% participation in the consortium. Operational execution is scheduled for the second half of 2026 and will require a fleet of DP2 vessels and specialized resources.
From a geoscientific perspective, the award confirms the demand for integrated geophysical, geotechnical, and benthic survey services in HVDC cable corridors. NextGeo will combine its own capabilities with those of CONISMA, Poliservizi, and CIBM to deliver a multidisciplinary assessment. The contract includes sampling phases, high-resolution seismic campaigns, ROV inspections, and in-situ benthic studies.
280 km marine route: morphology, sediments, and fauna at 280 km
The activities will aim to map the seabed morphology and characterize the shallow stratigraphy along the cable corridor. Geophysical surveys will allow for the identification of current channels, areas of sedimentary accumulation, and geohydrodynamic risks that influence cable burial. These data are essential for sizing protection campaigns and selecting laying and anchoring techniques.
Sediment characterization will include particle size sampling, geochemical analysis, and in-situ tests to determine the mechanical stability of the seabed. Derived geotechnical reports will guide decisions on laying, burial, and the need for protection works. Additionally, UXO risks will be evaluated, and specific surveys will be planned for their detection and mitigation.
The environmental component will cover censuses of phyto-zoobenthic communities, sensitive habitats, and migration corridors, using standardized methodologies to assess potential impact. Data integration will allow for proposals to minimize effects and compensation measures prior to the construction phase.
NextGeo leads consortium with universities and technical partners
The consortium integrates academic and operational expertise: CONISMA provides inter-university marine research; CIBM provides specialization in marine biology; Poliservizi contributes logistics and technical services. This synergy reduces technical risks and ensures compliance with regulatory requirements and environmental impact assessments. NextGeo, with its fleet and team of over 600 professionals, will lead the execution and supervision.
NextGeo’s previous experience in offshore projects for renewable energy and power cables supports its ability to meet European schedules and standards. The award, following a competitive process (published in the EU OJEU) and achieving the highest technical-economic score, validates the RTC’s technical proposal. The operational phase will involve campaigns with multiple vessels, ROVs/AUVs, and sampling platforms.
In summary, the contract for over €28M for the Milan–Montalto HVDC survey represents a strategic opportunity to consolidate geoscientific methodologies applied to the laying of subsea electrical infrastructure. The combination of the consortium’s scientific, operational, and regulatory capabilities aims to ensure a safe, efficient, and environmentally responsible design for the new link.
Source: https://www.linkedin.com
Photo: Shutterstock