THE WORLD OF
TRANSMISSION

THE WORLD OF TRANSMISSION

What is
the energy transmission system?

High voltage electricity transmission is Terna's main task that, by developing the grid, benefits the local community and the entire system.Transmitting energy means transporting the produced electricity directly to where it will be used.

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THE WORLD OF TRANSMISSION

Terna, headquarters

Terna is a large operator in electricity transmission grids lead by Luigi Ferraris with Chairwoman Catia Bastioli. The Group’s company structure comprises the holding company, Terna S.p.A., and its two operating subsidiaries: Terna Rete Italia and Terna Plus, both with their own BOD.

THE WORLD OF TRANSMISSION

The Power Stations

By power stations we mean a structure where lines interconnect and energy is transformed into various voltage levels. It includes all the equipment necessary to open, close and select the lines to manage the electricity flow.

THE WORLD OF TRANSMISSION

Flow management

Electricity cannot be stored and so the quantity required by families, businesses and transport must be produced when necessary. Terna is tasked with managing the energy transmission so that supply and demand are always balanced, continuously and safely.

THE WORLD OF TRANSMISSION

Overhead power lines

Electricity is transmitted through power lines, electricity lines that are either overhead or underground. The overhead lines transport high voltage electricity through conductors (electrical cables) held by metal pylons or pillars, designed to keep the metal lines far from the ground to ensure electrical isolation.

THE WORLD OF TRANSMISSION

Foster Supports

Foster supports are pylons that won the first international "Supports for the environment" competition, designed for Terna by Sir Norman Foster, from whom they take their name. He is a British designer and architect who is one of the principle exponents in high-tech architecture.

THE WORLD OF TRANSMISSION

Single pole pylons

The single pole tubular pylons are a significant innovation in the creation of high and extra-high voltage lines. As well as being compact, these pylons are characterized by a reduced base size (from 250 to 50 m2) and having less of a visual impact.

THE WORLD OF TRANSMISSION

Germoglio pylons

The “Germoglio” pylons were designed by architect High Dutton (head of the project: architect Rosental). Structural functionality, high flexibility in use, industrial feasibility and accessibility for grid maintenance operations: these are the Germoglio pylons' main characteristics.

THE WORLD OF TRANSMISSION

Submarine cables

Submarine cables are created to connect two coasts that would otherwise not be able to "share" energy between them. They are built and then placed at the bottom of the sea or sometimes lakes or rivers. The electricity that goes through them is generally a high voltage direct current.

THE WORLD OF TRANSMISSION

Underground cables

Electricity can also be transmitted using underground cables. These are used when there needs to be a compromise between environmental impact and economic costs. Underground cables are, in fact, more expensive than overhead cables.

THE WORLD OF TRANSMISSION

Cantieri Aperti & Trasparenti

It is a new clear and interactive system that citizens, businesses and institutions can use to follow, in real-time, the development of the large electrical projects in Italy. In other words, everything about "how, where and why" the great infrastructural works for our electrical system are constructed.(

THE WORLD OF TRANSMISSION

Terna and Sustainability

For Terna Sustainability is the awareness of having a responsibility towards the community with a single strategy: to find the right balance between the country's energy needs nature conservation and the safeguarding of Italy's cultural heritage.

THE WORLD OF TRANSMISSION

Terna and AEEG

The Authority for Electricity Gas and Water is an independent organization that has the task of defending the consumers' interests and promoting competition, efficiency and the spread of quality services, by checking and regulating.

THE WORLD OF TRANSMISSION

Terna and the MISE

Among the organisms with whom Terna is in contact, one of the most important is definitely the Ministry of Economic Development (MISE), the governmental department that covers Production, International Commerce, Communications, Energy and Cohesion Policies.

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