The company said an underground cable fault occurred at about 4.22am in the district, triggering the blackout.
It said engineers are carrying out emergency repairs, including the mobilisation of temporary generators and the laying of temporary cables to restore power as soon as possible.
CLP’s community support team was also on site to provide assistance, including handing out mobile batteries for emergency use at affected care homes.
The company said it is in close contact with the District Home Affairs Office and local district councillors.







