Transmission Maintenance

Asset maintenance solutions you can trust

TransGrid is ISO 55001 certified. We’re also the first Australian organisation to be awarded the Jacobs Asset Management Recognition Medal for best practice asset management. 


Find the high-voltage transmission maintenance service to maximise the operational life of your assets and provide support in the event of an emergency. 

Maximise the lifespan of your assets

  • Maintenance Managed Service: Maintenance plan, customised to your assets and operational requirements. The service typically includes scheduled maintenance and functional checks, and can extend to the replacement of small and large assets that reach the end of their serviceable life.
  • Maintenance on Demand: State-wide support offered by technical specialists.  Access expertise in secondary systems, substations, transmission lines, high voltage cables and telecommunications equipment.

Support in an emergency

  • 24-hour support for emergency maintenance. An around-the-clock operations centre monitors assets across the network. Engineers and technicians can provide support in response to critical issues.
  • Post-event report, inclusive of recommendations for incident prevention and management. 

Enquire about transmission maintenance services  

Email maintenance@transgrid.com.au to enquire about maintenance solutions for your organisation.  

Find the services that are right for you

Choose the essentials, or a comprehensive asset maintenance service. The choice is yours.

Substations Transmission lines Cables Secondary Systems Telecommunications
  • Transformer maintenance and refurbishment
  • Transformer diverter maintenance
  • Circuit breaker maintenance
  • High voltage equipment testing, condition assessment and commissioning
  • Installation and repair of online condition monitoring systems
  • Switch yard maintenance and inspections
  • Earth testing
    Thermographic surveying
  • Test equipment hire
  • Battery testing
  • Earth grid works
  • Supply and top up services for SF6 and oil
  • SF6 reclamation, recycling and analysis
  • Emergency repairs and spares
  • Condition assessments for all line types plus substation gantry areas
  • Earthing repairs
    Both timber and steel cross-arm replacements
  • Insulator, fitting replacement on poles or structures
  • High voltage pole replacements
  • Line construction and OPGW installation
  • Emergency repairs and spares
  • Routine maintenance including pit access, gauges and alarms, oil ancillary equipment and link boxes
  • Maintenance of tunnels and pumping systems
  • Supervision of excavation and jointing work
  • Cable patrols
  • Cable oil sampling, processing and management
  • Sheath IR and fault location
  • Managing Dial Before You Dig systems
  • Emergency repairs and spares
  • Commissioning of protection systems
    Relay testing of protection systems
  • Configuration of protection systems
    Fault investigation of protection systems
  • Commission of control systems
    Relay testing of control systems
  • Fault investigation of control systems
  • Configuration of protection systems
  • Regulated NEM
  • Metering Provider type B for installation types 1 to 4
  • Accuracy testing of both primary plant and meters
  • Metering reporting to AEMO
  • Technical support for NEM compliance for metering installation types 1 to 4
  • Installation of DWDM, SDH and PDH, VHF/UHF
  • Radio Systems, 12v and 50v power systems and antennae
  • Service provisioning of communications equipment
  • Fibre and OPGW splicing and terminations
  • Battery maintenance
  • Testing of communications equipment
  • Radio site inspections
  • Decommissioning of facilities services
  • Emergency support

*Information in this table should be used as a guide only. Consult a TransGrid representative about current service offerings.