Terna Rete Elettrica Nazionale SpA is Italy’s leading electricity transmission system operator, responsible for planning, building and maintaining the country’s high‐voltage grid. The company emerged in 1999 following the unbundling of Enel’s network assets, and it plays a pivotal role in ensuring the reliability and security of power supply across the Italian peninsula and the major islands of Sicily and Sardinia. Terna’s operations include system dispatching, real‐time balancing of supply and demand, and the integration of new generation sources into the transmission network.
The company’s core activities encompass the development and modernization of grid infrastructure, deployment of digital control systems and investment in grid interconnections both domestically and internationally. Terna holds responsibility for high‐voltage lines operating at voltages up to 380 kV, and it continually upgrades substations to enhance capacity, reduce losses and support the integration of renewable energy. Through its smart grid initiatives, the firm leverages advanced monitoring tools and analytics to optimize grid performance and improve operational efficiency.
While Terna’s primary service area is Italy, the company has expanded its footprint through subsidiaries and equity investments in markets such as Brazil, Chile, Peru and the United Kingdom. These international ventures allow Terna to export its technical expertise in grid management, project development and consultancy services, contributing to energy security and network resilience in diverse regulatory environments.
Under the leadership of Chief Executive Officer Stefano Donnarumma, Terna continues to drive innovation in the electricity sector. The company is engaging in strategic projects to support Europe’s energy transition, with a focus on enhancing cross‐border interconnections, facilitating the uptake of renewable generation and deploying digital solutions to foster a more flexible and sustainable grid.
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