Snowy 2.0
Pumped-hydro expansion
project
Australia
Australia’s Largest Renewable Energy Project
Snowy 2.0 is more than just a construction project — it’s a once-in-a-generation investment in Australia’s clean energy future and currently the country’s most significant renewable energy initiative.
This pumped storage hydro expansion of the Snowy Scheme will connect Tantangara reservoir and Talbingo reservoir through 27 km of tunnels, an underground power station and complex intake and outlet structures, delivering clean energy to millions of homes.
Doka delivers a full spectrum of formwork, shoring and digital solutions for Snowy 2.0. Our scope includes the intake and outlet structures, transition areas and the headrace and tailrace tunnels. This features high-performance tunnel formwork and steel travellers, along with a range of specialized systems — all seamlessly brought together into a holistic concept. The result: Safe, efficient execution of our scope of work. Doka is proud to contribute to this milestone in collaboration with Future Generation Joint Venture (FGJV) — a partnership between Webuild, Clough, and Lane — with execution support from subcontractor Whittens.
Challenge
- Massive funnel-shaped diffuser with curved intake edge, thick slabs and high walls demands precision and strength.
- Transition zones shift between rectangular and circular profiles, requiring adaptable formwork under tight logistics.
- Specialized steel travellers — each tailored to a distinct construction phase — deployed and operated in a tightly chronological sequence deep within the tunnel, under demanding space and logistical conditions.
Solution
- A comprehensive suite of formwork, shoring and digital solutions that enable precise assembly and safe execution at every stage.
- Modular tunnel system SL-1 with Top50 panels enabled seamless changes in cross-sections – from rectangular to circular and back – ensuring safe, efficient and resource-saving execution, while the semi-monolithic setup of the modular tunnel system ensured a continuous and well-coordinated tunnel lining process.
Bolzoni Michele Paolo | Doka Senior Project Manager | Large Scale Projects
„The transition zones were among the most technically demanding parts within Doka’s scope of works in Snowy 2.0, as the tunnel geometry shifted between rectangular and circular profiles. With our customised SL-1 traveller system and integrated invert formwork, we could adapt seamlessly, mastering the geometric challenges“
Project data
Year of completion
2026
Project duration
2024 - 2026
Client
Future Generation Joint Venture - FGJV
Contractor
Whittens Group