Tarraleah Upgrade Intake and Portal 11kV Power and Comms Feeder Installation
Tender ID: 515142
Tender Details
Tender Description
The construction of an 11kV feeder line and substation mounting pads between Butlers Gorge Power Station and the new intake and downstream portal at Lake King William area.
It forms part of the Tarraleah Upgrade programme of works.
The Tarraleah Power Scheme is in the Upper Derwent in southern Tasmania. Its headwater storage, Lake King William was formed by the construction of the Clark Dam in 1951 on the River Derwent. Water from Lake King William is discharged from Butlers Gorge Power Station and Nieterana mini-hydro Power Station.
Water is then transferred via two conveyances; Tarraleah No. 1 conveyance and No. 2 conveyance. Much of the Tarraleah Hydropower Scheme is more than 80 years old and many of its assets are nearing the end of their operational life. In addition, there is insufficient capacity and operational flexibility in the existing water conveyances to meet the expected future National Electricity Market (NEM) requirements.
Hydro Tasmania is currently investigating options to redevelop the Tarraleah Hydropower Scheme to extend its operational life and to meet expected future National Electricity Market (NEM) requirements.
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