Negotiated Procedure, With Exploratory Notice And Expression Of Interest On The Siaps Platform Of So.Re.Sa., Pursuant To Art. 76 Paragraph 2 Letter B Of Legislative Decree N. 36/2023 And Ss.M..Ii. And With Award Of The Lower Price Referred To In The Art. 108, Paragraph 3 Of The Same Code For The Annual Supply, Possibly Extended By Twelve Months, Of Dm Dedicated To The Gen 11 Generator