Subject : Multiple commercial wind turbine catastrophic gear box failures New England
In the past year many commercial wind turbines are having catastrophic gear box failures. These turbines are only three to four years old .The failures run up near 1 million dollars and will reoccur every three to five years again after replacement.
A public meeting was held in Portsmouth,Rhode Island on October 23,2012 . Don Roberts (Donald Roberts LLC) spoke at the meeting about several gear box failures .Don has done contract work for the NREL. Don spoke about a 1.5 Megawatt turbine at Otis AFB FL-1577 gear box problems and the AAER 1.5 MW A-1500 wind turbine at Portsmouth ,Rhode Island and another wind turbine in Princeton ,Massachusetts .
The Otis AFB FL-1577 was installed in 2009 .
The cost of the Portsmouth RI gear box is $695,000.00 and possibly three blades at around $100,000.00 each -(one million total)
The cost of the Princeton ,Massachusetts gear box was over $600,000.00
The Otis Air Force Base wind turbine is the next catastrophic failure .Built in 2009 it too has a major gear box failure