What we do

We own, operate and maintain the electricity transmission and distribution network in Tasmania. We deliver a safe, cost-effective and reliable electricity supply to more than 295,000 residential, commercial and industrial customers. We facilitate the transfer of electricity between Victoria and Tasmania via Basslink, the sub-sea electricity interconnector. We also provide telecommunications and technology services.

We are owned by the State of Tasmania and operate as a commercial business with assets of $3.5 billion.

Our responsibilities include:

• Keeping our people and our customers safe
• Tasmanian jurisdictional planner in the National Electricity Market
• Maintaining and replacing network infrastructure to ensure a reliable service for our customers
• Connecting new customers to the network (including small and large-scale generators)
• Investing in the network to support capacity growth
• Operating the network on a day-to-day basis, including all power outage restoration
• Maintaining the public lighting system
• Recording and providing regulated meter data to retailers
• Providing telecommunications, data centre and information technology services to customers, including those in the Tasmanian electricity supply industry.

Our locations

We have two main offices: one in the Hobart suburb of Lenah Valley and the second in the Launceston suburb of Rocherlea. Our field-based team members are located at major resource centres at Cambridge, Rocherlea, Devonport and Burnie; substations in Trevallyn and Glenorchy; and at smaller regional depots known as response centres.  Our Training Centre is located at Mornington, near Hobart.

Our subsidiaries

The subsidiaries of Tasmanian Networks Pty Ltd are TasNetworks Holdings Pty Ltd (non-trading subsidiary), FortyTwo24 Pty Ltd, Marinus Link Pty Ltd and Large Scale Renewables Pty Ltd.

Fortytwo 24 Pty Ltd (42-24)

We own a subsidiary business called 42-24 that specialises in telecommunications, information technology services and data centres.

Project Marinus

Project Marinus is progressing the case for further Bass Strait electricity transmission interconnection, Marinus Link, as part of Australia’s future electricity grid. Project Marinus commenced in 2018 with $20 million in funding to conduct a business case assessment. The findings of the business cases assessment showed that a new link is technically and financially feasible and delivers benefits to customers right across the National Electricity Market (NEM).

Marinus Link is a proposed 1,500 megawatt capacity undersea and underground electricity connection, together with supporting transmission developments in Tasmania, that will link Tasmania’s renewable energy generation and storage resources to Victoria and the NEM.

In June 2020 the Prime Minister included Project Marinus as one of 15 national priority infrastructure projects to support Coronavirus COVID-19 recovery. On 1 July 2020 Project Marinus moved into the Design and Approvals phase. This is a key milestone as we work toward Marinus Link and supporting transmission being ‘shovel ready’ by the mid 2020s, and in service from the late 2020s, as called for in the Australian Energy Market Operator’s 2020 Integrated System Plan (ISP).

Large Scale Renewables Pty Ltd

Set up to facilitate large-scale renewable energy generation connections to our network in Tasmania.

The areas in blue in the diagram below indicate our role in Tasmania's electricity supply industry.