Business Green: Shares in Enel Green Power (EGP) got off to a lacklustre start as they debuted on the Milan and Madrid stock exchanges this morning, falling by more than four per cent in early trading. The drop came despite the decision by Italian energy giant Enel to cut the price for shares during the unit’s IPO from an initial range of EUR1.9 (£1.67) to EUR2.4 to EUR1.6 per share. The move meant that the company ultimately sold EUR2.26bn of shares at EUR1.6 each in the IPO, falling well short of its target…