Electrical interconnector

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High-voltage direct current interconnections in western Europe in 2008 - red are existing links, green are under construction, and blue are proposed.
Map of Japan's electricity transmission network, showing differing systems between regions. Unusually for a national grid, different regions run at completely different frequencies.

An electrical interconnector is a high power AC or DC connection, typically across national borders[1] or between different electrical grids.[2] They can be formed of submarine power cables or underground power cables or overhead power lines.

The longest interconnection at 2016 was the undersea NorNed link between Norway and the Netherlands, spanning nearly 600 km and delivering 700 MW of high voltage direct current power.[3]

See also[edit]


  1. ^ Electricity interconnectors ofgem
  3. ^ IEA/OECD (2016) Large-Scale Electricity Interconnection: Technology and prospects for cross-regional networks, (IEA, Paris)