Danish wind turbine maker Vestas Wind Systems A/S (<a href="https://www.nasdaqomxnordic.com/aktier/microsite?Instrument=CSE3258&name=Vestas%20Wind%20Systems&ISIN=DK0061539921" target="_blank">CPH:VWS</a>) on Thursday said it has sold a 656-MW wind project portfolio in Italy to PLT Energia in an example of leveraging its development portfolio to strengthen its partnership with customers.