Our Projects

Building Australia’s energy future.

Pumped hydro, grid-scale batteries, substations and major infrastructure — here’s where Giidjaa crews are working right now.

Supply Nation Certified Indigenous Owned & Operated

Trusted by the companies building Australia

North Queensland · Pumped Hydro

Kidston Pumped Hydro

250MW

generating capacity

2,000MWh

of storage — 8 hours

40+ yrs

since Australia last built pumped hydro

Two old gold-mine pits, reborn as the upper and lower reservoirs of one of the most important energy storage projects in the country — with an underground powerhouse carved into the rock between them.

Kidston is Australia's first pumped hydro scheme in more than four decades, and the first ever developed by the private sector. When the grid has spare solar in the middle of the day, Kidston pumps water uphill; when the evening peak hits, it lets it fall and generates.

Giidjaa supplies and manages the electrical workforce for the project's delivery joint venture — our electricians, HV technicians and supervisors working underground in the powerhouse on switchgear, cabling, distribution and fit-off.

Delivered with

The Giidjaa electrical crew lined up underground in the Kidston powerhouse cavern, John Holland signage behind

South Australia · Battery Energy Storage

Bungama BESS

150MW

of power

300MWh

of storage

275kV

connection to the grid

On the dry flats near Port Pirie, rows of batteries the size of shipping containers are teaching South Australia's grid to hold onto its sunshine — banking cheap midday solar and handing it back when the state needs it most.

Giidjaa crews delivered electrical works across the site's balance of plant — the substation gear, cabling and connections that turn a paddock of batteries into a power station.

Giidjaa supplied the electrical crews for the site's balance-of-plant works — switchgear buildings, distribution boards, cable installation and terminations across the yard.

Delivered with

High-voltage disconnectors and busbars against a big South Australian sky

Four of the crew feeding orange conduit through the switchyard

More of our work

Wide view of the Uungula wind farm substation under construction — rows of high-voltage switchgear and insulator stacks under a blue sky, cable drums and crews on the gravel pad

Two Giidjaa electricians in orange hi-vis bending copper earthing bar at a site bench, a transmission tower and the wind farm switchyard behind them

Central West NSW · Renewables & HV Substation

Uungula Wind Farm — Substation & Electrical Works

414 MW largest wind farm in NSW69 turbines — 220,000+ homes poweredSubstation HV & balance-of-plant electrical, with Downer

Near Wellington in the Central West of New South Wales, Uungula is the largest wind farm in the state — 414 MW from 69 turbines, enough clean energy for more than 220,000 homes. Giidjaa crews are on site with Downer delivering the electrical works that tie it together: high-voltage switchgear and disconnectors, terminations, copper earthing, and the control and marshalling wiring across the project's substation and balance of plant. Methodical high-voltage work in the open — an Indigenous-owned contractor helping build the biggest wind farm in NSW.

Delivered with EPEC Group

HERO — switchyard under construction at ground level: galvanised steel structures and tall grey insulator stacks, crews

Elevated wide overview of the South Bay works — steel structures and insulator stacks rising from red dirt, plant and cr

Western Downs QLD · Renewables & HV Substations

Wandoan South Solar Farm — 275/33kV Juandah Substation

275/33 kV substation self-delivered<14 weeks construction through commissioningOn time and under budget for EPEC

Delivered for EPEC Group — and delivered properly. At the Wandoan South Solar Farm in Queensland's Western Downs, Giidjaa self-managed the South Bay electromechanical works for a new 275/33kV substation from construction right through to commissioning: disconnectors and earth switches assembled and installed, structures and primary plant erected, busbar and control cabling run, high-voltage testing and QA turnover completed to energisation. Under time, under budget, in under 14 weeks — the project that proves Giidjaa delivers substations end to end.

Delivered with Yurika

Aerial view of the Swanbank Battery site — Tesla Megapack foundations laid out across the former coal station site, crane lifting units into place (photo courtesy of Yurika)

Ipswich QLD · Battery Storage

Swanbank Battery — Grid-Scale BESS

250 MW battery capacity500 MWh energy storage2/3 of Ipswich powered for two hours

On the site of the former Swanbank B coal-fired power station in Ipswich, CleanCo's Swanbank Battery is one of Queensland's biggest — 250 MW / 500 MWh of Tesla Megapack storage, enough to power two-thirds of Ipswich for two hours every evening. Giidjaa crews worked alongside Yurika and JTMEC on the electrical infrastructure connecting the battery to the grid — coal country turned clean-energy hub, built by crews like ours. (Photo courtesy of Yurika.)

Wide site overview of the Rozelle water treatment plant area — tanks, clarifier and pump skids under a bright sky; clean

Finished switchroom: MCC/plant control panels, orange distribution board, VSD wall and immaculate cable tray runs — stro

Sydney · Motorway Infrastructure (WestConnex)

Rozelle Interchange — Permanent Water Treatment Plant Electrical

Full design electrical package — design & install33kV joints & terminations across the interchangeOn time and under budget on Australia's largest road project

On the Rozelle Interchange — the final stage of WestConnex and Australia's largest road infrastructure project — Giidjaa delivered the FULL electrical design package for the interchange's permanent water treatment plant, then installed it: switchroom, MCCs, VSD walls, instrumentation and cable reticulation across the plant, successfully commissioned under time and under budget. Our accredited HV crews also delivered 33kV joints and terminations across the substation feeder network — workmanship that anchored Giidjaa's ASP Level 1 accreditation audit.

Landscape hero-quality shot: long run of neatly dressed cable ladder with orange HV conduits and black cabling sweeping

Tight landscape close-up of layered cable tray runs (orange, black and blue services) immaculately dressed and tied — a

Sydney · Tunnelling

Western Harbour Tunnel — Temporary Water Treatment Plants & 33kV Terminations

3 temporary water treatment plants — full electrical58 33kV terminations64 termination & joint kits supplied

The Western Harbour Tunnel is one of Sydney's flagship transport projects, and Giidjaa crews are on it twice over. We delivered the full electrical installation for the project's three temporary water treatment plants — the immaculately dressed tray runs and services in these photos are that design done properly. And our jointers are delivering 58 terminations across the tunnel's 33kV network, with the 64 Raychem termination and joint kits supplied to match — supply and install, not just labour.

Most dramatic shot: three 33kV elbow terminations mid-assembly in a ring main unit, copper screen wires fanned back over

Three completed 33kV elbow terminations neatly dressed into an RMU cubicle with earthing in place — clean finished-work

Central Queensland · Renewables

Clarke Creek Wind Farm

450 MW Stage 1 capacity100 turbines, 207 m tip height330,000 homes powered

Clarke Creek is one of the biggest wind farms ever built in Australia — 450 MW across 100 turbines on Barada Kabalbara Yetimarala country in Central Queensland, powering around 330,000 homes. Giidjaa's HV jointing crew travelled from NSW to carry out 33kV cable jointing and terminations on the collector network that links the turbines to the grid, working construction shifts as a specialist subcontractor. An Indigenous-owned business helping build clean energy on Indigenous land.

Delivered with Yurika

Wide landscape view down the sealed access road through the completed switchyard, gantries and disconnector stacks eithe

Central QLD · HV Switchyard

Broadsound HV Switchyard

HV Open-air switchyard electrical works2025 Year deliveredCentral QLD Regional delivery

An open-air high-voltage switchyard in Central Queensland, delivered in late 2025 alongside Yurika and JTMEC. Giidjaa crews carried out the HV electrical works across the yard — disconnectors, current transformers and marshalling boxes installed, wired and dressed to standard on the finished gravel pad. It is careful, methodical work done a long way from the city, and the standard of the finished yard helped win Giidjaa its next major switchyard project.

Delivered with Gamuda

Night shot of the floodlit station box — Giidjaa's wall-mounted LED floodlights lighting the deep excavation, twin tunne

Sydney Olympic Park · Rail & Tunnelling

Sydney Olympic Park Station Box Lighting

12 × 600W LED floodlights installed24 km of new metro line beneath Sydney1st autonomous TBM breakthroughs in Australia — under our lights

Deep beneath Sydney Olympic Park, the station box for Sydney Metro West needed serious light before tunnelling crews could work safely through the night. Working for Gamuda, Giidjaa crews installed twelve 600-watt LED floodlights around the rim of the box, transforming night visibility for the teams working below. Months later, Australia's first autonomous tunnel boring machines broke through into that same box — under lighting our team put there.

Delivered with Gamuda

Giidjaa team member Aiah standing arms crossed in front of the fully assembled TBM cutterhead in the launch box

Sydney · Metro Tunnelling

Sydney Metro West — TBM Electrical Build

TBM electrical build & installation24 km twin metro tunnels under SydneyGamuda delivery partner

Before a tunnel boring machine can turn a single cutter, it needs power — serious power, built properly. Giidjaa crews delivered TBM electrical build and installation works with Gamuda on Sydney Metro West, the underground railway linking Parramatta to the Sydney CBD. It's the sharp end of tunnelling electrical work: high-voltage supply, distribution and control systems for some of the biggest machines in the country — and that's one of our own standing in front of it.

Delivered with CPB Contractors

TBM breakthrough at the airport line — official CPB Contractors footage. Watch the full video →

Western Sydney · Metro Tunnelling

Sydney Metro – Western Sydney Airport — TBM Build

TBM electrical build & installation9.8 km twin tunnels beneath Western Sydney4 mega TBMs — Eileen, Peggy, Catherine & Marlene

Four tunnel boring machines — Eileen, Peggy, Catherine and Marlene — carved 9.8 kilometres of twin metro tunnels for the new line to Western Sydney International Airport. Before any of them could turn a cutter, they had to be built and powered. Giidjaa crews delivered TBM electrical build works with CPB Contractors on the Station Boxes and Tunnelling package — supply, distribution and control systems assembled and installed on some of the biggest machines in the country. Watch CPB's own wrap of the tunnelling, right through to the final breakthrough in June 2024.

Delivered with Aquatic Engineering

Aerial view of the containerised water treatment plant at Claremont Meadows — clarifier tanks, blue filter vessels and holding tanks laid out beside the settlement pond (photo courtesy of Aquatic Engineering)

Blue media filter vessels and containerised treatment plant on the concrete pad at the St Marys site (photo courtesy of Aquatic Engineering)

Western Sydney · Metro & Water

Sydney Metro – Western Sydney Airport — Nine Water Treatment Plants

9 water treatment plants — full electrical installation23 km new metro line to the airportCPB with Aquatic Engineering

Nine water treatment plants across the new metro line to Western Sydney International Airport — and Giidjaa built every one of them electrically. Working with Aquatic Engineering for CPB Contractors, our crews delivered the electrical installation across all nine plants: switchboards, motor control, instrumentation and cabling, plant after plant, to the standard a nation-building project demands. (Photos courtesy of Aquatic Engineering.)

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