Icing forecast


Kjeller Vindteknikk runs an operational forecast model that delivers information of icing events. The forecasts are delivered for each hour up to 48 hours and are updated four times daily. The icing forecast is delivered as a map, which shows geographically where active icing can be expected and its intensity. The forecast is also delivered as a time-series of the mass of accumulated ice.

Icing of a wind turbine decreases its energy yields. At the moment, we are delivering forecasts of icing along with a forecast of the energy production of a wind farm. For wind turbines exposed to some icing, we have shown that the precision of the energy production forecast increases if the icing forecast is considered.


In addition, the icing forecasts can also be used to analyze when and where there is an apparent risk for falling ice from buildings and other large constructions. For the winter 2013/2014, as a part of a development project, Kjeller Vindteknikk is providing icing forecasts for a high TV mast in Norway. Based on the icing forecasts we are able to alert when there is a certain risk of falling ice.


Short-term icing forecasts can also be used to predict when there is a danger of ice throws from operating wind turbines. Such information is essential for the safety of the personnel maintaining the wind farm and is also important for the general public, which are in the vicinity of the wind turbines.

The icing forecasts are developed by Kjeller Vindteknikk as an outcome of two research programs we are participating in: IceWind, which is managed by DTU and where VTT, Norwegian Meteorological Institute and Uppsala University are important partners; and the Wind Pilot Project, which is funded by the Swedish Energy Agency and managed by O2 Vindkompaniet.

For more information please contact:


Øyvind Byrkjedal    oyvind.byrkjedal@vindteknikk.no   +47 48 09 95 30