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| Italy–France submarine power cable | |
|---|---|
| Name | Italy–France submarine power cable |
| Type | Submarine power cable |
| Status | Operational |
| Start | Ventimiglia |
| End | Nice |
| Owners | Terna (company), RTE (Réseau de Transport d'Électricité) |
| Length km | 45 |
| Capacity MW | 1000 |
| Voltage kV | 320 |
| Laid | 2015–2019 |
| Commissioning | 2020 |
Italy–France submarine power cable is a high-voltage direct current interconnector linking northern Italy and southeastern France via a submarine and land cable system. The project connects the Italian transmission operator Terna (company) with the French transmission operator RTE (Réseau de Transport d'Électricité), aiming to enhance cross-border electricity trade between Europe, improve supply security for Liguria, and integrate renewable generation from the Alps and Provence-Alpes-Côte d'Azur. The interconnector interfaces with regional grids around Genoa, Nice, and the broader Continental Europe power grid.
The interconnector is part of the European Union initiative to develop a transnational infrastructure network under programs promoted by the European Commission, ACER (Agency for the Cooperation of Energy Regulators), and the Ten-Year Network Development Plan. It supports the European Green Deal targets and complements projects such as the Medgrid proposals and other cross-border links like the France–Spain interconnector and the UK–France HVDC Cross-Channel link. Stakeholders include national regulators like ARERA, CRE (French Energy Regulatory Commission), and multinational financiers such as the European Investment Bank.
Initial bilateral talks involved representatives from Rome and Paris following early 21st-century discussions on Mediterranean energy security. Feasibility studies referenced frameworks used in projects like NordLink, Baltic Cable, and the Celtic Interconnector. Environmental impact assessments drew on precedent from the Channel Tunnel infrastructure reviews and the Trans-Mediterranean Renewable Energy Cooperation dialogue. Contracting and procurement engaged major engineering firms active in submarine cabling such as Prysmian Group, Nexans, and ABB (company), and construction schedules were coordinated with port authorities in Marseille, Genoa, and Savona to minimize disruption during the Mediterranean fishing season and events like the Monaco Grand Prix.
The system uses high-voltage direct current (HVDC) technology at approximately 320 kV with bipolar configuration, enabling around 1,000 MW transfer capacity, comparable to capacities on links like NEMO Link and Moyle Interconnector. Converter stations employ voltage source converters (VSC) similar in principle to units supplied for Energia Vilnius and projects referenced by Siemens Energy. The cable comprises two insulated conductors with copper or aluminum cores, armoring designed for seabed conditions found near the Ligurian Sea, and fiber-optic pairs for system control and telecommunications akin to arrangements on the NordBalt link. Protection systems follow standards from CENELEC and IEC protocols, and substation interfaces connect to 380 kV/400 kV networks characteristic of the European Network of Transmission System Operators for Electricity (ENTSO-E).
The cable route traverses from an onshore converter at Ventimiglia across the Ligurian Sea to landfall near Nice, with onshore segments linking to substations in Savona and the wider Piedmont transmission corridors. Installation used cable-laying vessels and trenching techniques applied in projects like the Balticconnector and involved coordination with maritime authorities including the International Maritime Organization-aligned offices in Marseille. The route accounts for maritime features such as the Ligurian Basin, Natura 2000 sites, and shipping lanes to Gibraltar and the Strait of Bonifacio, and integrates with coastal protection managed by regional entities in Provence and Liguria.
Environmental reviews considered impacts on habitats protected under the Natura 2000 network and species like the Cuvier's beaked whale and Posidonia oceanica meadows, adopting mitigation techniques similar to those used for the Trans-Adriatic Pipeline and EastMed (pipeline) environmental plans. Fisheries stakeholders from Marseille and Genoa participated in consultations modeled on precedents involving the Common Fisheries Policy and regional authorities in Corsica. Regulatory approvals navigated frameworks from ARERA, CRE, ACER, and national ministries in France and Italy, and financing complied with EIB lending criteria and European Investment Bank environmental standards.
The interconnector increases market coupling between the Italian and French bidding zones within the ENTSO-E trading area, influencing prices in hubs such as PUN (Prezzo Unico Nazionale) and Powernext. It enhances the ability to export surplus hydroelectricity from Alpine reservoirs and import low-carbon nuclear generation from French nuclear power plants like Paluel and Tricastin, while supporting renewable energy integration from solar parks in Provence-Alpes-Côte d'Azur and wind projects near Liguria. Economic benefits include strengthened grid resilience, reduced congestion rent, and investment stimulus for port logistics in Genoa and industrial clusters in Marseille‑Aix.
Operation is coordinated by Terna (company) and RTE (Réseau de Transport d'Électricité) under cross-border scheduling rules of ENTSO-E; capacity allocation follows mechanisms used in EU day-ahead market coupling and coordinated congestion management procedures championed by ACER. Maintenance employs remotely operated vehicles (ROVs) and cable repair vessels using techniques refined on the NorNed and NordLink interconnectors, and emergency response plans align with national civil protection agencies in Italy and France as practiced during incidents such as the 2003 European heat wave to ensure supply continuity.
Category:Submarine power cables Category:Energy infrastructure in Italy Category:Energy infrastructure in France