- Start
- Dec 1, 202950% CONFIDENCEfrom the source
Snowy 2.0 Pumped Hydro Online
- Snowy 2.0 is a pumped-hydro scheme in Kosciuszko National Park, New South Wales, linking Tantangara and Talbingo reservoirs via 27 km of tunnels and an underground power station 800 m down, with six 333 MW reversible units (about 2 GW) and about 350 GWh of storage[1][3]
- Announced in 2017 at about $2 billion with completion around 2021-2024; construction began 2019 and cost is now about A$12 billion, with a report in October 2025 that it is 67% complete and cannot be finished within A$12 billion[1][2][3]
- On 3 May 2023 Snowy Hydro said full commercial operation may slip a further 12-24 months to December 2029, citing COVID-19, supply chain problems, design changes and geology, which is the basis for the pin's December 2029 date[2][3]
- Wikipedia's later status says it is currently expected fully operational by end of 2028; a newer source than the 2023 announcements[1]
- Tunnelling was hampered: TBM Florence was stuck for months in soft rock and again in May 2024, and tunnelling was halted in early 2025 over safety concerns[1][3]
References 351% CONFIDENCE
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]50%en.wikipedia.org/wiki/Snowy_2.0en.wikipedia.org· Posted Sep 11, 2026· Starts Dec 1, 2029 ✓· 98% of score
Given as a target, not a fixed date, per the pin description: "…ant to backstop Australia's renewables. Estimated date.…"
- [2]85%Snowy 2.0 project pushed back to late 2029, costs to blow out againreneweconomy.com.au· Published May 3, 2023· 1% of score
RenewEconomy's May 3, 2023 report states Snowy Hydro "may not reach full commercial operation until December, 2029," matching the pin's stored estimated date exactly.
- [3]80%Snowy 2.0 pumped hydro project faces another two-year delaypv-magazine-australia.com· Published May 3, 2023· 1% of score
PV Magazine Australia independently corroborates the same May 2023 Snowy Hydro announcement pushing "completion to December 2029," matching the pin's stored date.
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National Research Institute for Earth Science and Disaster Resilience
