HVDC Moyle

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The HVDC Moyle is the HVDC link between Auchencrosh in Scotland and Ballycronan More in Northern Ireland, which went in service in 2001.

Northern Ireland Energy Holdings (Northern Ireland Electricity) owns and operates the Moyle Interconnector (Moyle) which links the electricity systems of Northern Ireland and Scotland, and the Scotland to Northern Ireland natural gas transmission pipeline (SNIP).

The HVDC Moyle consists of two monopolar 250 kV DC cables with a transmission capacity of 250 megawatts. The static inverters are completely equipped with photothyristors.

As line connection a 63.5 kilometer long monopolar cable is used, of which 55 kilometers are implemented as submarine cables.

Northern Ireland Energy Holdings is a mutual company which manages energy assets in the long term interests of Northern Ireland's energy consumers. Having no shareholders, any financial surpluses are for the benefit of energy consumers. This combined with long term secure finance has allowed the company to manage major energy assets at a very low cost to consumers.