Under the three-year agreement, the utilities will work together to either construct new plants or acquire existing assets in the areas of mutual interest.

Enel CEO Francesco Starace said: "Enel is ready to support the growth of the countries in which it has a strategic or commercial interest, including in the field of energy infrastructure.

"In this context the collaboration agreement with Terna is key for the development of additional power grids and interconnections in countries outside of Italy with a shortage of infrastructure, especially in developing countries."

Enel will focus on acquisition, development and operation of high-voltage transmission or connection grids related projects, outside Italy, while Terna will provide technical assistance in the analysis of the electricity system, grid planning and design, operation and maintenance of transmission assets.

Terna will also consider acquisition and development of transmission assets.

Terna CEO Matteo Del Fante said: "Terna continues to operate abroad by focusing its attention on its core business of power transmission.

"Working with partners like Enel, which has a major international presence, we can develop our transmission operations, contributing to the design and possibly the construction of plants."