Bornholm Bornholm Bornholm (; ) is a Danish island in the Baltic Sea, to the east of the rest of Denmark, south of Sweden, northeast of Germany and north of the westernmost part of Poland. Occupying an area of , the island had a total population on 1 January 2018 of 39,632. Among Bornholm's chief industrial activities are dairy farming and arts-and-crafts industries such as glass production and pottery using locally worked clay. Tourism is also important during the summer months. The island is home to an especially large number of Denmark's round churches. The island is known as "solskinsøen" ("Sunshine
Bornholm Cable Bornholm Cable Bornholm Cable is one of the longest submarine three phase AC cables in the world. It is a 60 kV cable interconnecting the power grids of Bornholm and Sweden. The Bornholm Cable starts at 60 kV substation Hasle () and runs on its 1.4 kilometres as underground cable with a cross section of 400 square millimetres to the Baltic Sea, where the 43.5 kilometres long submarine cable section starts. At this section copper conductors with 240 square millimetres are used. From the landing point at Sweden it runs on a length of 700 metres as underground cable with