Vestas Wind Systems A/S (VWS) won a 400-megawatt deal to supply turbines to two Duke Energy Corp. (DUK) wind farms in Texas, the biggest order it received in three years. Delivery of 200 V110 2-megawatt turbines will begin in the first half as the Los Vientos III and Los Vientos IV wind farms are scheduled to start up in 2015 and 2016, Aarhus, Denmark-based Vestas said today in a statement. The accord with Duke’s renewables unit includes three-year service agreements.