Power Transmission & Distribution
Substations, pylons and cable corridors — the grid between the generator and the meter.
Grid work is foundations and steel at one end and careful electrical commissioning at the other. The civils are honest — access, ground investigation, foundations and concrete you will recognise from the shared methods linked below — but they march across country in a corridor hundreds of kilometres long, with every landowner, crossing and outage negotiated separately.
The four guides in this sector cover substation construction — the civils, buildings and electrical installation behind the fence; overhead line construction, towers and conductors strung over everything in the way; underground cable installation with joint bays every few hundred metres; and grid connections and energisation, where the new asset meets the live network on a booked outage that does not slip.
What does Power Transmission & Distribution cover?
Process guides in Power Transmission & Distribution
- Substation Construction — The fenced compounds where voltage changes hands — air-insulated or gas-insulated switchgear, transformers the size of houses, and a buried copper earth grid that has to be right before anything else is built.
- Overhead Line Construction — Lattice towers and steel poles marching across country — four foundations per tower, steel stacked in sections, and conductors strung under tonnes of tension and sagged to the millimetre.
- Underground Cable Installation — High-voltage circuits buried in trenches and duct banks — kilometres of XLPE cable pulled between joint bays, bedded in thermal surround, jointed by certified jointers, and proven by the sheath test.
- Grid Connections & Energisation — The paper-and-permit end of grid construction — connection agreements, protection witness tests, outages booked seasons ahead, and the phased switching sequence that puts a new asset on the live network.
Shared methods used in Power Transmission & Distribution
- Corridor Access & Enabling Works
- Survey Control & Ground Investigation
- Bulk Earthworks — Cuttings & Embankments
- Drainage & Utility Corridors
- Shallow Foundations
- Piling & Deep Foundations
- Concrete Frame Construction
- Grid Connection & Energisation
- Testing, Commissioning & Asset Handover
Part of the Utilities & Energy group.