The major wind turbine manufacturers are sold out, most until 2008. The constraint on the global wind market in the next two years will be limited supplies, not lack of orders. The bottleneck lies with the suppliers of huge custom.designed components, bearings and gearboxes in particular. The log jam was first felt in the US at the start of the year (Windpower Monthly, March 2005), but has spread worldwide. How fast the industry can ramp up to meet demand remains to be seen.