Snowy 2.0 Cost Soars to $25B, Completion Pushed to 2029

The Commonwealth government's Snowy 2.0 pumped hydro project has experienced a dramatic cost escalation, with estimates now potentially reaching $25 billion, significantly exceeding its original projections. This revision marks a substantial setback for Australia's largest renewable energy development.

Snowy Hydro Limited announced updated figures pushing the estimated cost from $12 billion to $22.2 billion, with a contingency bringing the total to $25 billion. The project's completion date has also been deferred to late 2029, attributing these issues to severe geological challenges and rising construction costs.

This massive 2200-megawatt energy-storage project is crucial for Australia's energy transition, aiming to store abundant energy and release it when needed. Its development has been hampered by pandemic-related disruptions, supply chain issues, and difficult tunnelling conditions.

Energy Minister Chris Bowen and Finance Minister Katy Gallagher attributed the cost overruns to the previous Coalition government's underprepared plans and significant geological complexities. Opposition figures have called for accountability from the current government over the escalating expenses.

Despite the challenges, Snowy Hydro CEO Dennis Barnes emphasized the project's long-term value, stating its storage capacity is world-leading and vital for grid reliability. The project is intended to support renewable energy sources like wind and solar, mitigating potential blackouts and price spikes during periods of low generation.

As Australia transitions away from aging coal-fired power stations, expected to close by 2035, projects like Snowy 2.0 are deemed essential for maintaining grid stability and ensuring affordable energy supplies.