The grid 2016
Iceland has only one single defined grid but a number of regional or distribution networks. Landsnet owns and operates all bulk transmission lines in Iceland. The grid also includes all main substations in the country.
The grid receives electricity directly from power stations and transmits it to distributors and power-intensive users. All power stations that are 10 MW or larger connect to the grid, which transmits the electricity to energy intensive consumers and distribution system operators around the country. The distributors then carry the electricity onwards to individual consumers.
Electricity cables at year-end 2016
Our transmission network covered a distance of 3,283 in 2016 including 251 km of underground cables. The network includes voltages of 66 kV and higher as well as a number of 33 kV lines. The grid’s highest operating voltage is 220 kV. A large part of the grid operates at 132 kV and some parts at 66 kV and 33 kV. Transmission lines in the south-west and east of Iceland were built as 420 kV lines but operate at 220 kV.
Substations at year-end 2016
The transmission network now includes 74 substations and 85 supply locations, 20 of which are power stations, 8 energy intensive users and 59 supply locations for distributors.