To estimate expected ice loss in a planned wind farm, we have developed an in house state-of-the-art method IceLoss which models the expected icing losses of a wind farm based on simulations with the mesoscale model WRF, combined with post-processing algorithms developed by Kjeller Vindteknikk.

Ice formation on rotor blades influences the aerodynamic properties of the blades leading to large power losses in the wind farm. Production losses of 50 % or more have been observed during winter months characterized by icing with heavy intensity. Icing can thus result in large annual production losses.

The output of the model include a long term estimate of the ice losses for the wind farm based on the modelled icing climate at the site and provides this loss factor with and without ice protection systems.

IceLoss is validated with data from operational wind farms.


Production Data – May Production Data – November