The Mt Millar Wind Farm was the first wind farm in South Australia to use Enercon E-70 2MW direct drive turbines (don't have gearboxes). It connects to ElectraNet’s existing transmission network at Yadnarie Substation, via a 33 km 132 kV overhead transmission line and substation.

Construction of this wind farm started in late 2004 and was completed in December 2005. Power production started in February 2006. The $130 million project was developed by Tarong Energy.