Turnkey substations and EHV cable systems.

Since 2008 we have delivered engineering, procurement and construction for extra high voltage cable projects and gas-insulated substations — over 500 km of EHV cable installed to date.

The EPC division

Design, supply, erect, test, energise.

Our EPC business was set up in 2008 with a specific focus: EHV cable projects and GIS installations. It covers project engineering, procurement and construction management under one contract, so the utility has a single party accountable from drawing approval to charging.

Gas-insulated substations give a far more compact footprint than conventional air-insulated switchyards, using SF6 for insulation — specified for urban substations and metro corridors where land is the binding constraint. Our scope includes switchgear, transformers, circuit breakers, and maintenance support.

Scope of work

What a turnkey package covers.

Engineering & design

Route surveys, cable sizing and thermal design, layout and civil interfaces, drawings through utility approval.

GIS & AIS switchyards

Gas-insulated and air-insulated substations, hybrid GIS, bay extensions, switchgear, transformers and circuit breakers.

Cable laying & jointing

Trenching, ducting and HDD interfaces, pulling, straight-through joints and terminations by our own jointers.

Overhead to underground

Heightening and diversion of existing EHV overhead lines to underground cable, including dismantling of unutilised towers.

Testing & commissioning

Sheath integrity, VLF/AC withstand, partial discharge and protection checks — through to charging and handover.

Maintenance & DLP

Ongoing maintenance and repair, including contracts carrying multi-year defect liability obligations.