CVA, based in Italy's Aosta Valley Region, has almost 1,000 MW as well as solar, wind and power distribution assets.

The proposal involves merging Iren's renewable assets with CVA to create a joint-venture that would be equally controlled by Iren and the Aosta Valley Region, the source said.

(Reporting by Giancarlo Navach, written by Stefano Rebaudo, editing by Valentina Za)