Bornholm is the result of a merger of the five former (1 April 1970 until 2002) municipalities on the island (Allinge-Gudhjem, Hasle, Nexø, Rønne and Aakirkeby) and the former Bornholm County. Bornholm Regional Municipality was also a county in its own right during its first four years from 1 January 2003 until 31 December 2006. From 1 January 2007 all counties were abolished, and Bornholm became part of the Capital Region of Denmark whose main responsibility is the health service. The municipality still retains its name Bornholm "Regional" Municipality. The island had 21 municipalities until March 1970, of which 6 were
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