The paper systematizes on measurement tasks needed in design and operation of wind turbines against the background of trends and potential of Wind energy in the world and in Germany. A table shows a correlation of quantities to be measured and their later position at the WPU (Wind Power Unit), including which phases of product life cycle of a WPU this measuring task may occur. Special sections are dedicated to the arising need measurement of higher forces and higher torque values as well as the clearly visible trend from onshore to offshore.