450m³ of concrete. 160m² of formwork. A 3.7‑metre‑thick structure. 80 tonnes of steel reinforcement. One exceptionally strong transition tunnel crown.
 
The team at Tantangara has successfully completed the crown of the tunnel transition at the entrance to Snowy 2.0’s intake structure — a major milestone for the project.

This transition crown marks the point where water from the Tantangara Reservoir will first enter the Snowy 2.0 hydropower system before travelling through the underground network to the power stations located nearly one kilometre beneath the Snowy Mountains.

Building this structure to withstand immense water pressure is crucial. With most of the intake sitting underwater, now is the perfect time to recognise the precision, planning, and sheer amount of work that has gone into bringing it to life.

Snowy 2.0 will provide around 350,000 megawatt-hours of large‑scale energy storage to the National Electricity Market — about half of what Australia is projected to need by 2050, according to AEMO. This project is essential to enabling Australia’s clean‑energy transition, and it’s made possible thanks to the tireless efforts of the teams delivering it.

Clough and its parent company, Webuild, form part of the Future Generation Joint Venture (FGJV) — the principal contractor for project owner Snowy Hydro — delivering Snowy 2.0, a major expansion of the iconic Snowy Scheme and a cornerstone of Australia’s renewable‑energy future. Learn more about the project here.

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