This is a 'wind-friendly' article. The calculations about failure support what we've researched about turbine durability- "... nearly all gearboxes in a wind farm are likely to fail within 20 years. This may seem shocking, but it is a reality in the field. Many wind operators will attest that most gearboxes have been changed or … Continue reading Wind-turbine gearboxes chance of one or more of the 20 to 25 bearings failing within seven years is 37%.