HV substations & Western Power connections.
Authority and private substations, transformer and main switchboard design, and the Western Power process that sits behind every new connection.
The incoming supply is often the most expensive and program-critical part of a building’s electrical services. Getting the maximum demand right, choosing the right substation arrangement and starting the Western Power process early can save months and significant headworks cost.
Aurum designs authority and private HV substations, transformer installations and main switchboards for apartments, campuses, hospitals and industrial sites — including relocating existing substations on live sites and integrating backup and embedded generation.
What we deliver
Substations & Power Systems Infrastructure
- HV and LV substation designs (private and authority)
- Emergency backup power systems (generators, UPS)
- Power generation systems (PV and Battery Energy Storage Systems)
- Lightning protection systems
- Earthing and bonding solutions
Authority & Approvals
- Maximum demand assessments from first principles
- Western Power connection applications and coordination
- Substation siting, access and spatial planning
- Relocation of existing substations on live sites
- Staging and temporary supply strategies
Generation & Storage
- Diesel backup generation for essential and life-safety loads
- Solar PV and battery energy storage integration
- Microgrid feasibility and design for remote sites
- Embedded networks and metering
Why Aurum
Demand done properly
On ECU City Campus, Aurum’s demand review reduced installed transformer capacity from 12 MVA to 8 MVA.
Live-site experience
Substation relocations planned around operating estates and residents.
Early engagement
Authority strategy set at concept stage, when it saves the most.
Related projects
ECU City Campus
Aurum's D&C electrical design for ECU City: dual HV intake, 4×2 MVA transformers, 160 kW PV, full DALI, and a 12→8 MVA redesign that cut headworks costs.
Dunsborough Hotel
Electrical design for a 54-room lifestyle hotel in Dunsborough — Western Power 1 MVA substation, LV distribution, PV, EV charging with load management and lightning protection.
Rio Tinto Hamersley & Rocklea Microgrid Solution
Maximum demand analysis, feasibility and design for solar, battery and generator microgrids at Rio Tinto’s Hamersley and Rocklea homesteads.
Frequently asked questions
When should I engage an electrical engineer for a Western Power connection?
As early as possible — ideally at concept or DA stage. The maximum demand and substation location affect the site layout, the headworks cost and the program, and authority lead times can be long.
Do you design private HV networks as well as authority substations?
Yes. Aurum designs both authority (Western Power) substations and privately owned HV infrastructure, including transformers, main switchboards and HV reticulation.
Can an existing substation be relocated on an operating site?
Yes. It needs careful staging, outage planning and coordination with the network operator. Aurum has planned substation relocations around live estates and occupied buildings.