Overview: Operation and maintenance play an important role order to reduce the levelized cost of electricity of wind energy. This presentation will introduce the current trends in operation and maintenance in wind turbines and the use of condition monitoring systems for the wind turbine drive train. About the Speaker: Full Name: Diego Alejandro Coronado Guzman Company/Organization: Fraunhofer IWES Address : Am Seedeich 45, Bremerhaven, Germany Phone: +49 47114290 363 Email Address: diego.coronado@iwes. fraunhofer.de Previous participation in Eurec Alumni Forums: Reliability and its Importance in Offshore W ind Park P rojects, Alumni forum Paris 2013