The accurate definition of the wind turbine power curve is crucial for the economics of any wind power project. For the definition of the power curve of a wind turbine the active electrical power produced by the wind turbine and the reference wind speed and direction at a height from the ground equal to the wind turbine hub height are measured.

Additionally, atmospheric pressure and air temperature are monitored in order to calculate actual air density and then calculate the power output at normalized air density conditions.

The Laboratory for Wind Turbine Testing (LWTT) of CRES performs complete power curve evaluation for any size of wind turbines.

Special features:

• High accuracy industrial grade data acquisition systems
• Experienced and efficient staff
• Measurements and reports according to IEC, MEASNET and FGW recommendations
• Remote monitoring and data download

LWTT has considerable experience in power performance analysis of wind turbines operating

under non-standard conditions (highly turbulent, nonuniform flow field characterizing complex terrain sites). Power performance measurements have been performed in Italy, Spain and Greece both for verification and type certification measurements.

LWTT participates in the formulation of the IEC standard and MEASNET procedures, as well as in the regular round robin tests for power performance testing within the MEASNET  members.

LWTT is accredited by the E.SY.D (Hellenic Accreditation System) according to ELOT-EN

ISO/IEC 17025:2005. The accreditation scope includes Wind Turbine power curve measurements.