Renewables
Australia's Snowy 2.0 faces budget surge to A$25 billion
Project owner Snowy Hydro warns that Australia's largest renewable energy installation will see delayed delivery and higher expenses following a fresh review.
Key points
- Snowy 2.0 costs could reach A$25 billion after a recent evaluation by project owner Snowy Hydro.
- The completion date for the pumped storage scheme moves from December 2028 to late 2029.
- Principal contractor Future Generation Joint Venture missed productivity targets due to construction complexities.
What happened
Australia's prominent 2.2 GW Snowy 2.0 pumped storage facility is confronting a substantial financial adjustment, with total expenses potentially climbing as high as A$25 billion, Renewable Energy World reported. According to a review published by project owner Snowy Hydro, the initial announcement in 2017 estimated the cost at A$2 billion.
The fresh evaluation, conducted by principal contractor Future Generation Joint Venture (FGJV), established a baseline target of A$22.2 billion. Snowy Hydro indicated that the higher ceiling of A$25 billion accounts for the unique technical challenges, risk profile, and estimation difficulties encountered by FGJV.
Commissioning for the New South Wales initiative has shifted from December 2028 to late 2029. Snowy Hydro CEO Dennis Barnes described the financial escalation as disappointing, though he maintained that transitioning away from a fixed-price contract in 2023 shielded the development from even steeper budget overruns. Barnes noted that a fixed-price arrangement would likely have stalled the initiative completely under contractor claims.
Progress continues underground, with machine tunnelling reported at 65 percent completion and cavern excavation reaching 90 percent. Snowy Hydro attributed the contractor's productivity shortfalls to design immaturity during the final investment decision, alongside global price increases for labour, equipment, and services that surpassed assumptions made during the 2023 contract reset.
Why it matters
Large-scale energy infrastructure projects worldwide frequently encounter severe budget overruns and timeline extensions due to initial design complexities and global inflationary pressures. For emerging economies and developing regions seeking to expand their renewable portfolios, the Snowy 2.0 experience underlines the critical importance of realistic early-stage cost estimation and flexible contracting structures.
While Australia maintains universal electricity access and high per capita electricity consumption of 9,794.7 kWh in 2025 according to World Bank figures, major storage additions remain vital to balance intermittent generation. Policymakers and investors in regions like sub-Saharan Africa must carefully evaluate the risk allocation in multi-billion-dollar green energy transitions to ensure financial viability and prevent prolonged construction delays.
Original reporting
This article draws on the following reports. Read them in full on the publishers’ sites.
Context from CEII
Renewables are the fastest-growing part of the world’s energy system. The COP28 goal is to triple capacity by 2030, and solar mini-grids are the fastest route to power for millions of people without electricity.
26.7% of electricity in Australia was renewable in 2021Countries in this story
Written by the CEII Desk, the Centre’s automated newsroom, from the reporting credited above and CEII’s own data. Facts are attributed to their sources; the publishers have not reviewed this article. Spotted an error? Tell our editors.
