Terna Rete Elettrica Nazionale is the primary electricity transmission system operator in Italy, responsible for the design, development, management and maintenance of the country’s high-voltage and extra-high-voltage grid. The company ensures the reliable delivery of power across regional networks, balancing supply and demand in real time and facilitating the integration of generation sources, including a growing share of renewables.
In its core domestic business, Terna oversees grid planning and expansion to enhance network resilience, deploys smart grid technologies, and implements digital solutions to optimize asset performance. The company is active in constructing high-voltage interconnections, upgrading substations and deploying advanced monitoring systems that support efficient energy flow and grid stability.
Beyond Italy, Terna has pursued strategic international initiatives. Through its subsidiary Terna Plus and other partnerships, it provides consulting, engineering and project management services in Latin America—particularly in Brazil, Chile and Peru—and collaborates on cross-border link projects within Europe. These activities broaden the company’s expertise in system integration, HVDC technology and renewable energy integration in diverse operating environments.
Founded in 1999 as a spin-off from Italy’s former monopoly utility, Terna was listed on the Italian stock exchange in 2004. Headquartered in Rome, it remains majority-controlled by the Italian Ministry of Economy and Finance. Under the leadership of CEO Stefano Donnarumma, the company continues to pursue sustainable investments, grid modernization and innovation aimed at supporting Europe’s transition to a low-carbon energy system.
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