Proven quality, enabled to certify ProfEC Ventus GmbH offers a range of services that do result in best possible insights, raising valuable information for our Clients, in order to base substantial project related decisions on it in a safe and consistent way. Services provided are highly qualitative, often derived from recent research results and hence close to most recent scientific insights and innovative trends. We offer, among highly standardized services as calibrated wind measurement equipment, numerous services based on innovative approaches such as the uncertainty analysis via linear Weibull fit assessment or the customer oriented V.Mac for measurement data transfer, evaluation and sharing. Our premise is to increase certainty and reduce uncertainty and doubts for our Clients. Beside that we optimize energy yields of wind farms during the planning phase and during the operational phase. We serve Clients in an economic way and help to reduce planning and investment costs, while increasing benefits and operational income, although maintaining low risks and high benefits. Relying on pertinent accepted norms and standards ensures that our quality of work is accepted worldwide. During our daily work we certify compliance of tested subjects in question with in question with IEC 61400-12 IEC 61400-12-1 FDIS IEC 61400-12-1 Ed. 2:09-2016 IEC 61400-12-2 IEC 61400-1 Ed. 2, Ed. 3, Ed. 3.1 IEC 61400-2 Ed. 2 FGW TR6 Rev.9 FGW TR2 Rev.16 MEASNET Power Performance Measurement Procedure V.5 MEASNET Evaluation of Site-Specific Wind Conditions V.2 MEASNET Anemometer Calibration Procedure V.2 ProfEC Ventus is accredited as Testing and Calibration Laboratory following ISO/IEC 17025 for following services: Anemometer Calibration Wind Vane Calibration Measurement of wind turbine power performance Wind Resource (incl. Wind Mapping) and Energy Yield Assessment of Wind Turbines (incl. Assessment of Losses following TR6 Rev.9) Installation and Evaluation of Wind Measurements with Anemometers Site Classification of Wind Turbines