Patent ID: 8381487

Claim:
A method for erecting a plurality of concrete towers for wind turbines in a wind farm, wherein each tower comprises a concrete base section and at least one concrete upper section, at least some of said sections further comprising longitudinal segments, the method comprising: for each tower in the plurality of towers, performing a pre-assembly cycle further comprising erecting and connecting a first plurality of longitudinal segments on a base footing to form a base section for the tower, the erecting and connecting the first plurality of longitudinal segments further comprising placing each one of the first plurality longitudinal segments vertically on the base footing; connecting the base section to the base footing of the tower; erecting and connecting a second plurality of longitudinal segments on an assembly base provided on the ground in proximity to the corresponding base section to form an upper section for the tower, the erecting and connecting the second plurality of longitudinal segments further comprising placing each one of the second plurality of longitudinal segments vertically on the assembly base; for each tower in the plurality of towers, performing an erection cycle further comprising after the second plurality of longitudinal segments is connected to form the upper section, placing the erected upper section on top of the corresponding base section; wherein the pre-assembly cycle and the erection cycle are performed at the same time for different towers in the wind farm and the pre-assembly cycle for a first tower begins before the beginning of the pre-assembly cycle for a second tower, and the erection cycle for the first tower begins after the beginning of the pre-assembly cycle for the second tower.