Decmil delivered the Warradarge Stage 1 works in 2020. This Design & Construct contract involved the engineering, procurement and construction of the civil and electrical balance of plant works for the 51-turbine wind farm including wind turbine bases, 55km of new gravel roads around the 3,800ha site, site cabling, switch room and substation. 51 foundations each with 480m3 of concrete were poured from the on-site batch plant.
The scope of works included more than 60km of Electrical reticulation from WTGs to the switchroom; over 20,000m3 of concrete footings; electrical switchrooms; electrical substation including 2 x 200MVA and 330kV transformers; WTGs foundations; crane pads and hardstands. 117km of underground 33kV electrical cabling was laid by the construction workforce that averaged around 125 people during construction.
The Warradarge Stage 2 Expansion Project will contribute an additional 30 wind turbine generators (WTGs) to the wind farm which will increase the capacity to 283MW, making it the biggest wind farm in the South West Interconnected System (SWIS).
Decmil’s scope of work for Stage 2 includes the design and construction of:
- Wind farm access tracks
- Turbine hardstands including crane pad, tower laydown, blade laydown and auxiliary crane pads
- All drainage, sediment and erosion controls
- WTG foundations
- Site compound bench, concrete batch plant bench and laydown
bench.
The new turbines will be the same size as Stage 1 and will feature a hub height of 84 metres, a tip height of 152 metres and blades 67 metres long.
