Australia’s biggest renewable infrastructure initiative, Snowy 2.0, faces further financial and scheduling adjustments, with its target cost-to-complete revised to AU$22.2 billion and a total contingency allowance of up to AU$25 billion.
Following an extensive project reassessment released by Snowy Hydro Ltd., full commissioning of the pumped hydro expansion has now been scheduled for late 2029.
Climate Change and Energy Minister Chris Bowen and Minister for the Public Service Katy Gallagher acknowledged the updated projections, placing responsibility for the escalating budget on persistent construction sector cost inflation, major geological hurdles, and initial “design immaturity” when the project was first announced under the former government.
The original project estimate of AU$2 billion in 2017 had previously risen to AU$6.1 billion at the final investment decision. When construction began in 2019, the cost was raised to AU$12 billion.
Despite the substantial cost increases, the federal government confirmed that completing Snowy 2.0 remains essential for national grid security and energy affordability.
With tunnelling now 65 per cent complete, a marked increase from 19 per cent during the 2023 cost reset, abandoning the mega-project would risk power reliability, jeopardise 5,000 active jobs, and lead to higher long-term consumer bills.
An independent economic assessment conducted by engineering consultancy GHD revealed that Snowy 2.0 will inject AU$18.3 billion into the national economy, including AU$2.1 billion in direct local regional investment.
Furthermore, the analysis projects the scheme will reduce wholesale electricity costs by more than $7 billion over its first 50 years of operation by storing cheap renewable energy during peak generation periods and releasing it when demand spikes.
Once operational, the project will supply more than half of the total energy storage needed by Australia’s grid by 2050.
The federal government stated it will implement enhanced project oversight and explore financing structures to protect taxpayer value as Snowy 2.0 moves toward its 2029 completion.