Terna S.p.A. specializes in operating and maintaining the majority of Italy's high voltage and very high voltage electrical network. Net sales break down by activity as follows:
- operation of Italian grid (85.8%): owned, at the end of 2022, a grid of 68,105 km of power lines, 7,044 bays, 901 substations and 768 transformers;
- provision of services (14.2%): maintenance of high-voltage lines and fiber optic networks, engineering services for power and telecommunications stations, etc.
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