About Snowy 2.0

Snowy 2.0 is currently in initial design stages and this information is provided subject to the current feasibility study design parameters. There may be changes to key elements as the feasibility analysis of the design and construction process progresses.

If Snowy 2.0 goes ahead, it is anticipated that a new underground hydroelectric power and pump station would be built between the existing Tantangara (1,230m) and Talbingo (544m) reservoirs, connected by a series of new tunnels


Snowy 2.0 will increase generation capacity of up to 2000 megawatts, and at full capacity, about 350 000 megawatt hours of energy storage. The operating life will be consistent with the rest of the Scheme’s existing assets, which have been upgraded and technologically improved over the last 70 years.

By linking the two existing reservoirs via underground tunnels, Snowy 2.0 will allow water to be pumped from the lower reservoir (Talbingo) and stored in the upper reservoir (Tantangara). Pumping would be done when demand for energy is low and there is an excess of available power, likely from renewable sources.

…water can be recycled between storages, essentially making the upper storage of Tantangara a giant battery...

The water stored in Snowy Hydro’s reservoirs is effectively a battery of stored energy that is used to generate power when needed. In fact, the Scheme is one of Australia’s largest battery storages and Snowy 2.0 will supercharge this.

The project will involve underground excavation and tunnelling works between Tantangara and Talbingo reservoirs to depths of up to 800m. It will also involve surface works in several locations including at the intake-outlet structures, surge shaft, cable and ventilation portal sites. A number of supporting works will also be required such as establishing or upgrading access tracks and roads and electricity connections to construction sites. Accommodation will be provided for construction workers in temporary camps close to the work sites.

While the overall Snowy 2.0 project will be overseen and managed by Snowy Hydro, construction of Snowy 2.0 will be undertaken by a specialist construction company who will be responsible for all aspects of the build including staffing.