December 2012 - As part of its continuous quality improvement strategy, Ecofys WTTS has acquired the ISO 9001 certificate for all of its activities. Certification body DNV BA provided Ecofys WTTS with the certificate on December 13, 2012. Michiel Müller, Managing Director of Ecofys WTTS: ”Earlier on, we had our partner on Test Site Lelystad – windtest grevenbroich GmbH – audit our measurement processes on a yearly basis, to ensure compliance to IEC and MEASNET quality standards. With the ISO 9001 certificate, our internal quality standards have again been confirmed and made readily visible to the market. With this we continue to further professionalise the wind energy business and to improve and market the "product wind".