The braking mechanism on a large wind turbine failed in high winds (the second such occurrence in Denmark last week), leading to the spectacular failure in this video clip. There has been a rash of reported breakdowns in the last two months of turbines manufactured by Vestas, which has a 28% market share and 33,500 units deployed worldwide, according to its website. In a story in The Copenhagen Post, the manufacturer of the 10-year-old windmill cites poor maintenance, but vows to investigate all problems.