MG Projects

John Holland Group – Mernda Traction Power Upgrade (4 No. Traction Substations) (2017)

The Project

Owner: Metro Trains Melbourne

Location: Mernda, Vic

Client: KBR

Project: Mernda Rail Extension Upgrade

Role: Concept and Detailed Design

Completion Date: Q4 2017


  • Preliminary and detailed design of 2 brownfield and 2 green field traction substations
  • Development of signal power supply solution for the rail extension
  • Underground and overhead 22kV reticulation design
  • Liason with power supply authority for procurement of HV supplies
  • Managing complex stakeholder relationships with LXRA, MTM and others


  • Development of complex 3.3kV signal power solution for the rail extension, working in conjunction with LXRA and MTM
  • Assisted the Contractor (JHG) to procure electrical equipment in accordance with MTM standards and practices.
  • Developed outage and sequencing plans to maximise constructability with minimal impact on operating rail systems