The cable, which is 37.4km long and weighs 77kg per metre, is part of the infrastructure connecting Guernsey to France via Jersey, which in its entirety is referred to as GJ1. It is only the subsea element of the cable connecting Guernsey to Jersey that is being replaced.

This replacement undersea electricity cable will return Guernsey to importing more than 90% of its electricity from sustainable sources in France.