Supply and installation of a new electrical system for the boiler plant of the Enrico Fermi building (Lots A1, A2, A3); Telecommunication system for the pumping substation of the Leonardo da Vinci building (Lot B); Retrofit and telecommunication system of the transformer substation of the Leonardo da Vinci building (Lots C1, C2). This tender is the updated version of the previously cancelled bid 26_02_ITB_EFB_BOILER_ELEC.