A power line is the result of a long process of authorisations, cooperation and checks that involve communities, local administrations and ministries. Starting from the chosen route, a power line must take into account many factors, with its environmental impacts being one of the most important. For this reason, during the process that starts with the project and continues even after operation begins, every project at Terna is supervised by a team of internal professionals, specialised in engineering, geology, agronomics, natural sciences and forestry. The goal is to make the best technical decisions and mitigate the impact that the infrastructure has on the surrounding area.
Direct and indirect effects of the work on humans, animals, plants, soil, water, air, and landscape, in addition to cultural and environmental assets, are all assessed in the Environmental Impact Study. This document contains forecasts of the impact the power line will have, with the associated mitigation measures, precautions to be followed during the design, construction and operating stages, and additional compensatory steps.
Projects are then submitted to the appropriate entities for examination. These organisations express their opinions, with any provisions, as part of the Environmental Impact Assessment (EIA) procedure. These bodies then verify that the project has been executed properly and monitor compliance with provisions, thereby guaranteeing the utmost protection and attention for the environment.
All documents relative to procedures in course (environmental impact studies, observations from the public, additions and opinions) can be downloaded from the website of the Ministry of the Environment and Protection of Land and Sea.
The regulations for the Environmental Impact Assessment (EIA) make reference to Italian Legislative Decree 152 of 3 April 2006, as amended, "Norms on environmental matters". Terna's projects fall within the scope of Annex II - "National level projects", in the second part of the Decree:
4) Overhead power lines with nominal operating voltage exceeding 150 kV and of lengths exceeding 15 km and buried alternating current power lines, with lengths exceeding 40 km.
4-bis) Overhead power lines to transport electricity, part of the national transmission grid, with nominal voltage exceeding 100 kV and of lengths exceeding 10 Km.
4-ter) External overhead power lines to transport electricity, part of the national transmission grid, with nominal voltage exceeding 100 kV and of lengths exceeding 3 Km, when established following verification of applicability pursuant to article 20.