Icelink
Icelink is a proposed electricity interconnector between Iceland and the United Kingdom via Great Britain. At 1,000 to 1,200 km (620 to 750 miles), the 800–1,200 MW high-voltage direct current (HVDC) link would be the longest sub-sea power interconnector in the world.
The project partners for the main proposal are National Grid plc in the UK, Landsvirkjun, the state-owned generator in Iceland, and Landsnet, the Icelandic Transmission System Operator (TSO). An alternative proposal by Edi Truell's company Disruptive Capital Finance goes by the name "Atlantic SuperConnection", but it requires UK government financing.
According to Landsvirkjun, it will take about five years to complete feasibility and other work, and if a decision is made to go ahead, construction and installation would take a further five to six years.
The cost is as of 2023 expected to be €3.5 bn ($3.8 bn), for the cable and stations, not counting additional power plants.