Bornholm market towns and 15 parishes. In addition to supervising parish municipalities, which was the responsibility of the counties in "all" of Denmark, the market town municipalities of Bornholm were supervised by Bornholm County as well and not by the Interior Ministry as was the case in the rest of Denmark. The seat of the municipal council is the island's main town, Rønne. The voters decided to merge the county with the municipalities in a referendum May 29, 2001, effective from January 1, 2003. The question on the ballot was, "Do you want the six municipal entities of Bornholm to be
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