Sweden's defence department has been allocated around SEK 5 million (EUR 552,630) in state funds from the energy department to research how much offshore wind farms interfere with military radar systems. It will conduct a series of tests along the country's eastern Baltic coast near the island of Öland, where two offshore plants, Utgrunden and Yttre Stengrund, are located and where new offshore plants are planned, including E.ON's Utgrunden II. It will investigate the extent of the "shadow" an operating wind plant causes on military radar screens, whether it interferes with identifying enemy planes or ships, and whether the individual rotating blades of a turbine can actually be mistaken for a military craft. A number of radar stations will be provisionally set up along the coast of Kalmar Sound, the portion of the Baltic Sea lying between the Swedish land mass and Öland island. Test flights around the area's plants will be recorded and the research results presented to the energy department in December.