PryTerna is investing a total of around 3.7 billion euros ($3.84 billion) in the project, which includes a western section connecting the islands of Sicily and Sardinia.
The entire infrastructure is expected to be fully operational by 2028, with the first pole of the eastern section entering service in 2026, Terna said.
(Reporting by Romolo Tosiani in Gdansk; Editing by Alvise Armellini and Alison Williams)