Aurora Energy has completed Tasmania's deep water high-voltage sub-marine cable project to improve power supplies to customers in the upper West Tamar region.
The $3 million investment connects Bell Bay to Beauty Point, and features more than 1.7km of sub-marine cable with 780m lying in water depths of 40m.
Aurora project manager Ian Walker said that sub-marine cables were uncommon, but it had proved to be the best solution to improve electricity reliability to customers in the area.
Currently electricity in Beaconsfield and Beauty Point is fed from a 30km predominantly overhead high-voltage line, he said.