As an aside, the UK is still part of this but thanks to Brexit they got the opportunity to finance this interconnector by themselves and not avail themselves to the vast funds from the European Energy Programme for Recovery. For example Malta did and while the Malta Interconnector is not a world record in length but it certainly is in the relative amount: currently it's already above a quarter of the energy needs of Malta and in 2015 the relevant EU report said it's expected this to grow to 35% eventually.