Newton substation redevelopment

Client: Zinfra/Transend
Location: Tasmania, Australia
Date: June 2012 – November 2012

Redeveloping an ageing substation to upgrade infrastructure for effective, reliable and safe power distribution into the future


Located near Queenstown in Tasmania, the Newton substation was originally commissioned to provide supply to Newton pumping station and other loads. Due to the advanced age of the existing infrastructure, the effort and expense required to maintain the substation had increased significantly, resulting in a pressing need for extensive redevelopment. Entura was engaged by the client to design an upgrade of the brownfield substation.


Entura undertook the planning approvals, primary and secondary electrical design, and civil and building design to upgrade the ageing substation to meet contemporary requirements and reliably fulfil its long-term purpose.

The project included design for a new control building, MV switchgear, protection panels, SCADA system, AC and DC systems, 110/22/11 kV 17/25 MVA power transformers, 110 kV CBs, 110 kV isolators, and 110 kV overhead busbar, conductor and fittings. The lightning protection system and lighting system were also replaced.


Entura facilitated a concept design constructability workshop to ensure the design met the requirements of the construction partner.

Subsequently, we worked effectively with the construction partner to develop timely and workable solutions to all site challenges. Careful design staging ensured the Newton pumping station outage was minimised. We also obtained planning approval for the project to ensure construction started in time to meet the outage requirements.

Successful implementation of Entura’s design has improved the reliability and security of the substation.