Question by Sarah: Why do some wind turbines turn while others remain stationary?
When driving through Minnesota, my mother and I often wonder why it is some wind turbines will be merrily spinning away, while others are much slower or even stationary. Why is this? Are perhaps some of the turbines “turned off”, so to speak?
Best answer:
Answer by Starrysky
Load requirements might mean some turbine/generator capacity is not needed. No use spinning away and wearing out the bearings if the power cannot be sold. So the propeller blades are “feathered”.
Also, some units might be down for maintenance.
Know better? Leave your own answer in the comments!
