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During 2021, interconnectors provided 28TWh of electricity to the UK, which equates to 10% of total demand, whilst in 2009 this figure was 7TWh. [1] Interconnectors allow the trade of electricity between countries with excess renewable generation and those with high demand.
Electricity interconnection as percentage (EIL = electricity interconnection level) of installed electricity production capacity in 2014; the EU goal of at least 10% for 2020, and 15% for 2030. [3] Alternative formulas for calculating interconnection levels are based on peak load instead of installed capacity. [10]
Interconnection to wind power generating stations Italy-Greece Greece - Arachthos 39°11′00″N 20°57′48″E / 39.18333°N 20.96333°E / 39.18333; 20.96333 ( Italy-Greece Transmission - Arachthos Static Inverter
The UK grid is connected to adjacent European electrical grids by submarine power cables. In 2014, the UK's electricity interconnection level (off-island transmission capacity relative to production capacity) was 6%. [44] As of 2024, the total capacity of these connectors is over 9 GW.
By 2019, the project had received all the most important marine and planning consents in the UK. Following detailed design work, it was hoped that the link will be constructed between 2019 and 2022. [16] The consortium hoped to make a final investment decision in 2020. [6]
The cable will increase the UK's electricity interconnection level (transmission capacity relative to production capacity) from its comparatively low rate of 6% in 2014. [27] The Viking Link connects the UK to the west Denmark bidding area (DK1) of Nord Pool Spot.
The 51-kilometre (32-mile) DC cable runs via the Channel Tunnel between HVDC converter stations at Peuplingues in France and Folkestone in the UK, with an additional 14.5 km (9.0 mi) of underground AC cable on the English side to Sellindge substation, and 3.5 km (2.2 mi) on the French side to Les Mandarins substation, [3] to link the converter stations to the existing transmission networks.
Studies for the UK–Irish interconnection date back to the 1970s when the Irish Electricity Supply Board first examined the possibility of linking the UK and Irish electricity grids. Further studies were conducted in the early 1990s and a joint study was recently conducted between Electricity Supply Board and National Grid plc with the support ...