TERNA ENERGY SA informs the Investors, according to the provisions of art. 15 of L.3556/2007, that following a transaction of buy-back of treasury shares on the 2^nd of May, 2012, the total treasury shares held by the Company exceeded the threshold of 5%

Number of treasury shares before the transaction: 5,464,353, thus percentage 4.9979% of the share capital.

Number of treasury shares after the transaction of the 2^nd of May 2012:  5,471,853, thus percentage 5.0047% of the share capital.

It is noted that the voting rights corresponding to 5,471,853 common nominal shares are suspended as provided by par. 8 of the art. 16 of the C.L.2190/1920, as rights deriving from treasury shares.