Project Metrics:
- Location: 35 km northwest of Zeehan, Tasmania
- Number of turbines: 31
- Total generating capacity: 112 MW
- Turbine height (hub): 137 m
- Turbine height (blade tip): 200 m
- Turbines requiring ground improvement: 27
- CMC column lengths installed: 4.5 m to 21.5 m
Menard’s Innovative Solution for the Wind Farm Industry:
Located approximately 35 km northwest of Zeehan on Tasmania’s rugged west coast, the Granville Harbour Wind Farm is a major renewable energy project featuring 31 wind turbines with a combined generating capacity of 112 MW. Each turbine stands 137 m from ground level to the rotor hub and reaches an impressive 200 m to the blade tip.
The site’s challenging geology consists of extremely to highly weathered volcaniclastic breccia, overlain by stiff clays, silts, and embedded basalt cobbles. At 27 of the turbine locations, the existing ground conditions did not meet the project’s strict foundation performance requirements.
To overcome this, Menard implemented its advanced Controlled Modulus Columns (CMC) ground improvement technique, delivering safe and stable foundations capable of supporting the massive turbine loads. Column lengths varied from 4.5 m to 21.5 m, tailored precisely to suit the diverse ground conditions across the site.
