From greenfield switching stations to large-scale interconnector hubs, we design, build and energise the substations behind Australia's clean-energy grid.
Substations are where the energy transition becomes physical — connecting renewables, stabilising flows, and routing power across thousands of kilometres of network.
Elecnor Australia delivers high-voltage substations as a full EPC scope — from front-end engineering and detailed design through procurement, civil works, electrical installation, primary plant integration and commissioning.
Our work spans AIS and hybrid substations at transmission and sub-transmission voltages, including the connection assets behind utility-scale wind, solar and battery storage projects. We integrate large primary plant — phase-shifting transformers, synchronous condensers, power transformers, shunt reactors and capacitor banks — into network configurations that have to perform from day one.
Backed by Elecnor Group's 60 years of EPC delivery across more than 50 countries, our local teams combine global engineering depth with the regional workforce, supply chains and stakeholder relationships that complex Australian projects demand.
From new-build interconnector hubs to brownfield expansions and renewable connection substations — designed and constructed to operator standards.
Greenfield and brownfield 220 kV–500 kV stations connecting networks across states and managing inter-regional power flows.
Step-up substations and grid connection assets for wind, solar and BESS — delivered alongside the connecting overhead lines.
Live-network augmentation and outage-minimising upgrades to existing substations — for capacity uplifts, REZ enablement and asset renewal.
Single-point accountability across the project lifecycle — with engineering, procurement and construction managed by integrated teams.
Constructability-led primary & secondary design, AC/DC studies, earthing, lightning protection, civil & structural.
Global sourcing of transformers, switchgear, secondary systems & long-lead primary plant — with factory inspection & FATs.
Site preparation, earthworks, foundations, control buildings, structures, roads & drainage — with QA audit trail.
Primary plant installation, gantries, busbars, secondary systems, protection & control, fibre & SCADA integration.
Pre-commissioning, SATs, protection setting verification, energisation, stage hand-back & defect close-out.
As Transgrid's construction partner on EnergyConnect, we delivered the Buronga substation — the main hub of Australia's largest interconnector, linking NSW, South Australia and Victoria.
"The scale and engineering complexity of this substation is unlike anything else in Australia. Working alongside our delivery partners across civil, structural, mechanical and electrical disciplines, we overcame engineering challenges to integrate highly specialised equipment from around the world." — Felipe Delgado, Elecnor Australia EnergyConnect Project DirectorSee all transmission projects
A mix of EnergyConnect substations and renewable connection assets delivered for Australian network operators and IPPs.
EnergyConnect · Transmission
EnergyConnect · Augmentation
Example project
Renewables · Solar Connection
Example project
Renewables · Wind Connection
Placeholder · TBC
Energy · BESS Connection
Placeholder · TBC
Energy · BESS Connection
What network operators and developers tell us makes the difference on substation projects.
Buronga delivered without any major injuries across millions of worker hours — ISO 45001 systems backed by zero-harm leadership on every site.
Specialist primary-plant integration — synchronous condensers, phase-shifting transformers, capacitor banks — designed and commissioned in-house.
Integrated schedules across civil, structural, mechanical, electrical and commissioning — with milestone reporting clients can audit.
Regional subcontractors, First Nations workforce participation and supplier development programs like Legacy 100 on EnergyConnect.
A non-exhaustive view of the primary plant, secondary systems and structures we deliver as part of substation EPC scopes.
Step-up/step-down and PSTs for load sharing — including five in parallel at Buronga, a world first.
Inertia, reactive power and fault-current support — increasingly critical in high-renewables grids.
AIS and hybrid switchgear at transmission & sub-transmission voltages, including disconnectors and earth switches.
Concrete foundations, structural steel, gantries, bunds, drainage, control rooms and battery rooms.
IEC 61850 schemes, protection relays, RTUs, fibre, station HMI and SCADA integration to operator standards.
Reactive compensation for voltage control across long transmission corridors and renewable-heavy zones.
Whether it's an EOI, early-stage feasibility, a tender response, or a connection asset to scope — our delivery team can engage at any phase.
Capabilities · Substations
Project Enquiries Team
Australia & New Zealand · Sydney HQ