Following the successful repair and re-energisation of the GJ1 cable between Guernsey and Jersey in November, monitoring continued to assess whether the condition of the cable was stable before returning it to full service.
Unfortunately, this monitoring revealed a potential issue with the cable in a different location, approximately 9 kilometres offshore from Jersey.
Further testing is necessary before we can return the cable to full service. Until then the load on the link has been reduced whilst we work with the cable manufacturer to determine the most appropriate course of action. We are hopeful that further evaluation will establish the exact nature of the issue and what impact this may have on the operation of the cable.
On-island electricity is being provided by the Vale power station to supplement the reduced supply from the cable and meet island demand.’
Alan Bates, CEO, Guernsey Electricity.