Snowy Hydro 2.0 is a major expansion of the existing Snowy Mountains Scheme, currently under construction in New South Wales, Australia. The project involves linking the Tantangara and Talbingo reservoirs via a 27-kilometre tunnel and constructing an underground pumped-hydro power station approximately 800 metres below the surface.
The scheme is designed to increase generation capacity by up to 2,000 megawatts and will provide around 350,000 megawatt-hours of energy storage once complete—making it one of the largest pumped-hydro projects in the world.
The principal contractor is Future Generation Joint Venture (FGJV), an alliance between Italy’s Webuild (formerly Salini Impregilo), Australian-based Clough, and U.S.-based Lane Construction. The JV is responsible for delivering the project’s integrated engineering, procurement, and construction management services.
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CaSE International has been engaged by FGJV to provide technical and management support across several key elements of the project:
- Tantangara Project Site
CaSE engineers are leading technical design preparation, temporary works, and procurement for this site, which includes launching a 10-metre diameter TBM on a 14-kilometre drive and constructing a large hydraulic intake. The intake involves 500,000 m³ of excavation, forming a 16,500 m³ reinforced concrete diffuser, and blind-sinking a 65-metre gate shaft. A marine-based removal of a rock plug is planned once excavation is complete.
- Project Camps
Remote accommodation for approximately 2,000 workers is required. CaSE is overseeing the design, manufacture, and installation of multiple worker camps across the site.
- Trunk Services
High-voltage power and communications infrastructure are being installed across the site, including 35 kilometres of service routes through Kosciuszko National Park. CaSE is leading the design, approval, procurement, and delivery of these works.
- Engineering & Design
CaSE Design is responsible for multiple complex temporary works required to support the project’s TBM systems. This includes designing temporary foundations for the Slurry Treatment Plant and structural steel supports for the conveyor system.
