It is a puzzle to see so many of the wind turbines that are idle. Even in active wind farms, such as at Altamount Pass, it is usual to see at least 20% of the turbines idle. Older installations are usually idle as well. Why is this? Hydraulic turbines routinely run flawlessly for decades with very little downtime. Is it not surprising that wind turbines appear incapable of matching this? It does seem a huge economic burden to idle these units. These are expensive structures, stuffed with precision mechanisms.