section_path: Interconnections
section_name: Interconnections
paragraph_text: Interconnections
  
  The British grid is not synchronized with the continental Europe frequency, but it is interconnected using high-voltage direct current (HVDC) via the HVDC Cross-Channel (IFA), BritNed, Nemo Link, IFA-2, North Sea Link, Viking Link and ElecLink links. In 2014, before Nemo Link, IFA-2, North Sea Link, Viking Link and ElecLink became operational, the United Kingdom's electricity interconnection level was 6%.
  
  The networks of Ireland and Northern Ireland form the ENTSO-E Irish regional group, which is not yet interconnected with the continental Europe grid, but has DC interconnections with the British network through the HVDC East–West Interconnector, Moyle Interconnector and Greenlink.
  
  Similarly, the Nordic regional group of ENTSO-E (former NORDEL), composed of Norway, Sweden, Finland and the eastern part of Denmark (Zealand with islands and Bornholm), is not synchronized with the continental Europe, but has a number of non-synchronous DC connections with the continental Europe grid. Gotland is not synchronized with the Swedish mainland, as it is connected by HVDC.
  
  The network of ENTSO-E Baltic regional group, composed of Lithuania, Latvia and Estonia is interconnected with the Nordic grid at an electricity interconnection level of 10% through the HVDC Estlink cables and NordBalt cable, which is functioning since 2015. The Baltic States synchronize with the continental Europe grid through the Lithuania–Poland interconnection.
  
  The networks of Iceland and Cyprus are not yet interconnected with the other grids. Malta is connected up to 35% via the Malta-Sicily interconnector, commissioned in 2015.