Snowy 2.0 Project Faces New Challenges
The Snowy 2.0 hydropower project has encountered a fresh crisis with a tunnel collapse and ongoing difficulties for the tunnel boring machine, Florence.
Tunnel Collapse Raises Safety Concerns
A recent "drill and blast" operation in the main power cavern caused a collapse in the adjacent Main Access Tunnel. Sources connected to the project expressed concerns about the proximity of the blasting to the access tunnel.
Snowy Hydro stated that the connection between the cavern and the access tunnel was planned, but not as quickly as it occurred. They emphasized safety measures in place and the absence of workers during the blast.
However, allegations suggest that larger sections were blasted to expedite excavation, potentially compromising safety.
Safety Concerns at Tantangara Construction Site
The Tantangara construction site has faced numerous challenges, including a burst pipe incident that triggered a SafeWork NSW inspection. The incident raised concerns about the handling of high-pressure water equipment.
Snowy Hydro reiterated their commitment to safety and collaboration with relevant authorities.
Florence Faces New Obstacles
After being bogged down in soft ground, Florence now encounters difficulties with hard rock, leading to slower progress and frequent stoppages for cutting head replacements.
Progress in April dropped significantly compared to March, raising concerns about meeting the revised deadline for first power generation in late 2027.
Snowy Hydro is exploring options to de-risk the headrace tunnel construction by excavating from the other end.
Project Overview and Challenges
The Snowy 2.0 project involves building an underground hydropower station in Kosciuszko National Park, connecting Tantangara Dam to Talbingo Reservoir. It aims to generate 2,200 megawatts of power and act as a giant water battery.
Initially estimated at $2 billion and completion by 2021, the project now faces a revised cost of $12 billion and completion in 2027. Snowy Hydro bears most of the cost and risk after the initial fixed-price contract was abandoned.
Snowy 2.0 plays a crucial role in the transition to renewable resources by providing on-demand power to stabilize the grid with variable renewable energy sources like wind and solar.