Energinet is the Danish national transmission system operator for electricity and natural gas.

It is an independent public enterprise owned by the Danish state under the Ministry of Climate and Energy.

Eltra owned the electricity transmission network west of the Great Belt and was system operator there.

[16][17] Cobra and Viking were put on the EU "Projects of Common Interest" list in November 2015, along with the Krieger offshore wind turbine cable to Germany.

[21] It also owns a fiber-optic communication network and a gas storage facility, as well as a 20% stake[12] in European Market Coupling Company, a Central-West European cross-border electrical power trading joint venture due to begin operations on 9 November 2010.