High voltage grid connections

Decades of proven experience in the EPC of utility grade high voltage grid connection substations, switching stations and associated augmentations from 11kV to 330kV, delivering full turnkey grid connections.

Supported by working relationships with networks such as TransGrid, Essential Energy and SAPN, enables us to meet the requirements of any TNSP or DNSP without exception – ensuring a robust solution, that seamlessly connects to the grid both at commissioning stage and long into the future.


TEC-C’s capability includes:

  • A clear understanding of high voltage connections to the grid
  • All required modelling and studies including GPS, Earthing, Load Flows, Grading, Insulation Coordination and more
  • Obtaining grid connection agreements from DNSPs and TNSPs
  • Meeting network provider’s protection, automation and metering requirements
  • Specifying network specific equipment
  • Managing cost-effective designs including full detailed primary and secondary designs
  • Performing the role of Principal Contractor, meticulously managing all SQE on site through to commissioning on both brownfield and greenfield sites
  • Performing all detailed commissioning, from major components to the programming and set-up of protection and Automation Systems


Example case studies: