Siemens Gamesa Renewable Energy and Iberdrola have patented field - testing blade - scanning technology developed by Spanish start - up micro - enterprises . Named Notus , the company uses terahertz imaging to assess the condition of the different layers of a wind turbine blade coating and detect faults . Das - Nano said Notus was less destructive and more precise than the traditional pull - off inspection technology , and at less than € 100,000 ( $ 111,860 ) per day , was more cost - effective . Nordex , Suzlon and Vestas are also mulling about the technology .
Siemens Gamesa Renewable Energy and Iberdrola have begun field-testing blade-scanning technology developed by Spanish start-up Das-Nano. Named Notus, the system uses terahertz imaging to assess the condition of the different layers of a wind turbine blade coating and detect faults. Das-Nano said Notus was less destructive and more precise than the traditional pull-off inspection method, and at less than €100,000 ($111,860) per machine, was more cost-effective. Nordex, Suzlon and Vestas are also mulling testing the technology.