E’ un problema politico, è un problema reale, perché, a breve e medio termine, tra pochi anni dovremo far fronte alla crisi energetica proprio con le energie rinnovabili e l’efficienza. ###>That is a political problem, it is a real problem, because, in the short and medium term, in a few years’ time, we will have to deal with the energy crisis precisely by means of renewable energy and efficiency.