Case Studies

Large transmission infrastructure project to power South Australia’s mining industry

Piper Alderman advised ElectraNet on its contract with CIMIC’s UGL to design, construct and commission high voltage substations and 300km of transmission lines that will connect the OZ Minerals Prominent Hill Mine to the South Australian electricity grid. Spanning 300km, this $270m project is one of the largest transmission infrastructure projects in the last 30 years.

Team: Juniper Watson, Martin Lovell

Service: Projects & Construction
Sector: Electricity & Gas Regulation | Energy & Resources | Infrastructure

ElectraNet is an electricity transmission company focusing on developing energy and infrastructure solutions. Piper Alderman was pleased to work with the ElectraNet team to successfully deliver this significant high-voltage transmission line and electricity substation.

Piper Alderman advised ElectraNet on its Design and Construct contract with CIMIC’s UGL to design, construct and commission high voltage substations and transmission lines that connect OZ Minerals to the South Australian electricity grid. As part of the contract, UGL designed, constructed, and commissioned switching station infrastructure and approximately 300kms of high voltage transmission lines.

Additionally, we advised ElectraNet on its build, own, operate, and maintain (BOOM) and transmission connection arrangements with OZ Minerals. OZ Minerals agreed with ElectraNet to construct the new 300km high voltage transmission line and associated infrastructure to support its Prominent Hill operations in South Australia’s upper north region. The transmission line replaced the existing BHP facility and began operation in 2020.

ElectraNet’s Chief Executive, Steve Masters, said the project was the largest ElectraNet has ever undertaken to date and the new OZ Minerals connection will play a critical role in powering the mines’ operations. Piper Alderman’s legal experience in commercial contracts and projects allowed the team to undertake its mandate effectively.

What our Client said

The ElectraNet team, said:

Piper Alderman’s support to the ElectraNet team, combined with legal leadership in developing and negotiating the transmission connection agreement between ElectraNet and OZ Minerals, proved invaluable in achieving a successful outcome for all parties. The Piper Alderman team integrated themselves seamlessly and were prepared to go the extra mile when needed. It was a pleasure to work with Martin and his team over the last six months. Their professionalism, commercial-mindedness, tactful approach, attention to detail, flexibility and availability make them a trusted advisor to ElectraNet. We look forward to working with Martin and the Piper Alderman team on future transmission connection opportunities.”

Piper Alderman Partner, Martin Lovell, said:

“This transmission infrastructure not only provides an end-to-end network solution for OZ Minerals’ Prominent Hill, but also presents opportunities for future load and generation projects in the upper north region of South Australia. It’s great to see the ElectraNet team working with industry to deliver such significant contestable works in a competitive market.”