The transmission grid comprises overhead lines and cables at the two highest voltage levels, ie for 132 kV/150 kV and 400 kV transmission, as well as the interconnections with the neighbouring areas in Sweden, Norway and Germany.
 
The grids in Eastern and Western Denmark are different.
On Zealand, the 132 kV transmission grid consists of ring connections, while the 400 kV grid is characterised by a radial structure.

In Jutland and on Funen, the 400 kV grid is a combination of ring connections and radial structure. The 150 kV grid is a parallel grid, which also plays a role for the international transmission capacity.