The first video is a time-lapse film of the construction of one industrial wind turbine, with the following specifications from excavation to completion.
- 40-100 geo-piers installed for stability
- excavate 10′ deep, 100′ wide
- rebar: up to 96,000 pounds of reinforcing steel
- up to 53 concrete trucks pour foundations
- 1,500 cubic yards of soil backfilled and leveled
- blades: 173 feet long and 27,000 pounds each
- 8 truckloads to deliver turbine components
- nacelle the size of a school bus
- hub
- base tower height 53′11″
- base tower weight 97,459 lbs
- 160 bolts around the bottom
- mid tower height 84′″
- mid tower weight 115,587 lbs
- top tower height 119′0″
- top tower weight 104,167 lbs
- nacelle weights 181,000 lbs
- rotor diameter 354 feet
- final tower height to blade tip when fully extended: 442 feet
- nacelle containes generator, gearbox, rotor shaft
Also see: : Construction of Xcel Energy’s Courtenay Wind Farm, North Dakota