Terna - Rete Elettrica Nazionale SpA, the electricity transmission management company in Italy, invested on the first ever connection of Capri island to the mainland of Italy via a 30Km long high voltage submarine power line. The Capri-Torre Annunziata project will help increase the safety and reliability of the island’s electricity supply with the objective of reducing risks of blackouts, particularly during the summer months when tourism is at its peak and energy consumption increases.

This project was classed as zero environmental–impact project which strongly focuses on the environment and the territory allowing to preserve the enormous natural value of the island and of Campania’s coast. 

ASDG was appointed to execute post lay burial operations by using our successful 'Venom 3k-600T' jetting vehicle for the above mentioned project. In addition, ASDG performed mattresses installation at crossings with the existing assets by using our innovative 'AssoMat II'.

This interconnection represents an additional step of the broader Terna’s plan for strengthening the islands grid which represents a total investment of 2.3 billion euros. Among these, the SAPEI connection (both one and two) between Sardinia and the Ttalian mainland and the Sorgente-Rizzioni power line between Sicily and Calabria (Messina 2 Project), were ASDG had participated successfully over the past years.


Project Specifications

Capri - Torre Annunziata Interconnection

Prysmian PowerLink Srl
Cable Type:
Power 150kV HVAC
Cable Weight:
212Kg/m in air
Cable Diameter:
Service Provided:
Offshore Protection
Terna - Rete Elettrica Nazionale SpA
Jetting Length & Burial Depth:
24,742m @1.0m
Alternative Protection:
Mattresses: 126m
Gulf of Naples, Italy
Max Water Depth: