Meteorological effects on the offshore wind resource – forecasting and climatology

Time period: 2019-01-01 to 2022-12-31

Project leader: Erik Sahlée

Funder: Swedish Energy Agency

Type of award: Project grant

Total fundning: 4 975 551 SEK

The wind resource over sea is larger than over land, making offshore localization of wind power attractive. Difficulties in more exact assessment of wind climate is due to factors such as e.g. how the dynamic wave field shall be included in the calculations. Additionally, for inland seas (Baltic Sea) the meteorological conditions differ from open sea conditions due to the land proximity. This produces effects such as low-level jets, which have a major impact on the wind resource since they may exists close to hub height. The ability of current operational models to capture this feature in the offshore environment is still unclear. Here we conduct an in-depth study of these factors for the Baltic Sea in order to recommend a best model set-up for wind power applications. This includes both climatological wind resource calculations and evaluation of short-term forecast with focus on low-level jets.