Energy Networks


The efficient availability of electricity and the diversification of energy sources towards a post-fossil transition is a strategic objective in any modern production system, from both an economic and environmental and sustainable standpoint.

For this reason, the Region of Sardinia, as also reiterated in the Regional Environmental Energy Plan (PEARS), aims to ensure:

  • the stability and security of the electricity grid by considerably strengthening energy infrastructures;
  • the adaptation of the energy system to the regional productive system;
  • the diversification of energy sources to ensure efficient supply;
  • the decrease in dependence on oil products, the guarantee of the compatibility of the interventions and actions of the energy system with environmental protection and the harmonization of the energy network structures.

In Sardinia, in 2017, the final demand for electricity for consumption was 8,761 GWh, compared to a production of 12,335 GWh. In other words, the production of electricity generated on the regional territory was higher than the net island demand (+ 40.8%).

The regional energy network, managed by Terna Spa, must therefore be able to guarantee the correct transmission of energy flows both to the final regional user, and in connection with the national electricity grid.

As of 31 December 2017, the regional electricity grid consisted of 865 km of high voltage power lines (AAT), of which 313 km at 380 kV and 552 at 220 kV, and about 2,000 km of high voltage power lines (AT) at 150 kV.

The interconnection with the national electricity grid for bidirectional energy flows is guaranteed by two submarine cables, the Sa.Co.I. (Sardinia-Corsica-Italy), and the most recent and performing Saia.Pe.i. (Sardinia-Italian Peninsula). A third submarine cable (Sar.Co.) manages the energy flows between Sardinia and Corsica.






300 MVA

200 kVcc


2x500 MVA

500 kVcc


50 MVA

150 kVcc

Fonte: TERNA Spa


As regards the production of electricity from renewable sources (RES), the figures as at 31 December 2017 indicate that, compared to a total gross power of 4,744 MW, the power of generation from renewable sources was 2,330 MW as a sum of 35.174 plants including hydroelectric, solar, wind and bioenergy.


n. impianti

Potenza totale



466,4 MW



748,8 MW



1.023,6 MW



91,3 MW

Fonte: TERNA Spa

On the topic of new technologies applied to sustainability in the energy field, an intense research activity is being developed by Universities and public research centres.

Given the insularity, the windiness and the average annual temperatures in Sardinia find the favourable conditions for a wise exploitation of Renewable Energy Sources.

To consult the complete data on the regional energy system, click here

Updated on 13/05/2020