Upgrading King Island's Power Network

Late last year, mining company Group 6 Metals (formerly King Island Scheelite) announced their intention to reopen Dolphin Tungsten Mine at Grassy Harbour, on King Island's south-east coast. Work on redeveloping the site kicked off in late April and they anticipate to start production in 2023.

The new mine will significantly increase electricity demand on the Island. To meet this new load requirement, Hydro Tasmania will be increasing its output as required, and upgrading critical stretches of power line along Old Grassy and Grassy Harbour Roads.

As with all our operations, potential community and environmental impacts will be considered in the design and delivery of this project. Over the coming weeks, we'll be talking to project stakeholders and the community to share more information about the project, answer questions and listen to concerns. Where possible, we'll look to further adapt or manage project impacts to minimise disruptions for King Island residents, businesses and visitors.


Project Overview

The works will be completed in 3 stages. The local crew has already started work on Stage 1, a new line to connect the mine to the existing power network that will deliver the electricity needed to prepare for production. The upgrades made in Stages 2 and 3 will ensure the mine can receive the additional load needed for production.

The project timeline provides more information about each stage and estimated start dates. You can also explore the proposed design using the interactive map below.




Want more info?

Get in touch with Jane or Anneke, or hit the subscribe button to get progress updates direct to your inbox.

Late last year, mining company Group 6 Metals (formerly King Island Scheelite) announced their intention to reopen Dolphin Tungsten Mine at Grassy Harbour, on King Island's south-east coast. Work on redeveloping the site kicked off in late April and they anticipate to start production in 2023.

The new mine will significantly increase electricity demand on the Island. To meet this new load requirement, Hydro Tasmania will be increasing its output as required, and upgrading critical stretches of power line along Old Grassy and Grassy Harbour Roads.

As with all our operations, potential community and environmental impacts will be considered in the design and delivery of this project. Over the coming weeks, we'll be talking to project stakeholders and the community to share more information about the project, answer questions and listen to concerns. Where possible, we'll look to further adapt or manage project impacts to minimise disruptions for King Island residents, businesses and visitors.


Project Overview

The works will be completed in 3 stages. The local crew has already started work on Stage 1, a new line to connect the mine to the existing power network that will deliver the electricity needed to prepare for production. The upgrades made in Stages 2 and 3 will ensure the mine can receive the additional load needed for production.

The project timeline provides more information about each stage and estimated start dates. You can also explore the proposed design using the interactive map below.




Want more info?

Get in touch with Jane or Anneke, or hit the subscribe button to get progress updates direct to your inbox.

Stages 1, 2 and 3 upgrade locations

about 2 months

Use this interactive map to take a closer look at where we'll be completing the upgrades.

Stage 1 - New Spur Line

Stage 2 - Grassy Harbour Road Upgrades

Stage 3 - Old Grassy Road Upgrades