Granville Harbour Wind Farm

When complete, the wind farm will host 31 wind turbines that will produce up to 112 megawatts of clean, renewable energy available to Tasmanians; diversifying the state’s energy generation mix. This is enough electricity to power around 46,000 homes.

The wind farm will be connected to the Tasmanian grid via a new 12.5km transmission line that will join up to a connection point at the existing Reece Dam.

Zinfra were engaged by TasNetworks to design and construct the 11km Single Circuit 220kV Steel Pole Transmission Line, a 220kV Switching Station, and a 1.5km Dual Circuit 220kV Lattice Steel Tower Transmission Line across the Reece Dam wall connecting into the Hydro Tasmania Reece Power Station. Scope of works include:

• Clearing, stock piling and site development: Clearing of site vegetation;

  • Construction of temporary and permanent access tracks;

  • Benching and levelling of proposed construction area;

  • Stockpiling of construction aggregate.

• Switching Station design and construction:

  • 6 x 220kV disconnectors;

  • 3 x 220kV circuit breakers;

  • Associated post insulators & solid bus;

  • 12 x Capacitive Voltage Transformers (CVTs);

  • New conduit systems to new equipment;

  • New Pre-fabricated control building;

  • New fence arrangement;

  • New access track & associate internal pathways;

  • Associated secondary cabling and equipment;

  • Associated primary conductor and compression fittings.

• Transmission line design and construction:

  • 11km single and 1.5km dual circuit 220kV transmission line to the new Dual OPGW Circuit Pieman Switching Station;

  • Two new circuits with hard tee at the Farrell – Reece No.1 and No.2 translines adjacent to the Reece Power Station;

  • Pole and tower foundation designs allowing for foundation type selection based on confirmed ground conditions;

  • Pole and tower erection;

  • All associated stringing activities.