How do customers benefit from Marinus Link
In 2025, independent experts FTI Consulting (FTI) updated their analysis of Marinus Link’s impact on wholesale electricity prices.
FTI’s report – Project Marinus: Analysis of NEM consumer benefits – finds household and small business power bills would be better off with Marinus Link than without, with the largest savings to be felt by Tasmanians and Victorians.
Key findings
Project Marinus promotes the expansion of renewable energy generation in Victoria and Tasmania, leading to increased competition. It also improves access to Tasmania’s hydropower capacity and world-class wind resources, reducing dependence on higher-priced energy and capacity sources.
This results in reductions to wholesale electricity prices across the NEM, which is expected to be reflected in energy bills. Tasmania and Victoria are expected to see the most benefit:
Average annual reduction for a typical household:
- $113 in Tasmania
- $68 in Victoria
Average annual reduction for a typical small business:
- $512 in Tasmania
- $171 in Victoria
Figures are calculated for Stage 1 of Project Marinus and are in real 2025 dollars
How are these savings forecast?
FTI’s findings are based on market modelling, using inputs, assumptions and policy scenario settings that are broadly consistent with the Australian Energy Market Operator’s Draft 2025 Inputs, Assumptions & Scenarios Report.
Collectively, Marinus Link and the North West Transmission Developments projects are known as Project Marinus.