Drillham 132 kV Switchyard
- New 132 kV switching station — circuit breakers, post insulators and outdoor primary equipment
- Overhead transmission line between substations plus a 65 m communications tower
Delivery capability and network connection leadership at national scale.
Symphony delivers through an integrated platform of 100% owned specialist businesses and a national workforce of 1,300+.
The Symphony team has guided more of Australia's energy connection builds than any other team in the market.
— TRACK RECORD
Delivered, energised, operating.
Connection infrastructure across HV substations, transmission and grid-scale storage — built by the teams now part of Symphony.
Dulacca Wind Farm
- 3-bay 33 / 132 kV substation with 33 kV AIS switchgear and protection panels
- 132 kV reactive plant — 50 MVAr harmonic filter + 49.5 MVAr shunt reactor; O&M facility
Warradarge Wind Farm
- Full DPC&C delivered in under 18 months — 60 km of buried cable from each turbine base
- 330 / 33 kV substation with 400 MVA transformer capacity
Kaban Wind Farm
- 275 / 33 kV wind-farm substation with 33 kV switch room and SCADA for 6 collector groups
- O&M building plus 30 km of collector reticulation and fibre trenching
Ryan Corner Substation
- 500 / 132 kV, 250 MW scope of works
- 33 kV reticulation, earthing, comms, transportable switch room and O&M facility
Bulgana BESS
- Full balance of plant — civil and electrical works
- Integrated with the adjacent wind farm and grid connection
Rangebank BESS
- Full balance of plant — civil and electrical works
- Utility-scale battery storage delivered to schedule
Mortlake BESS
- Full balance of plant — civil and electrical works
- One of Australia's largest BESS deliveries to date
— Project scopes, dates and figures are working copy; verify with the delivery teams before launch
— OUR HISTORY
Built from five businesses. One platform.
Symphony is a new company assembled from established ones — five acquisitions of specialist delivery businesses, 100% owned and integrated into a single platform.
Around that delivery base sits a connections-leadership team with a track record of establishing inside most of Australia's major TNSPs — the regulatory, modelling and commercial work that runs the connection process. Vertically integrated, and now on the developer's side of the project.
— 01
RJE
High-voltage substations and connections
— 02
Cowell Electric
Powerlines and regional HV delivery
— 03
Catalpa
Civil and structural for energy infrastructure
— 04
Horizon United Group
Civil construction and maintenance
— 05
ART
Specialist engineering and wind measurement
— RJE
The connection-delivery core.
Decades of delivery across transmission- and distribution-class substations, switchyards, switchrooms and HV electrical balance of plant — engineered, manufactured and built in-house.
RJE is the primary source of Symphony's high-voltage connection track record, and the reason the delivery scope sits inside the same company as the partnership.
100+
HV substation projects
5,000+ km
Powerlines with Cowell Electric
— Working figures; verify before launch
— THE PLATFORM
The rest of the platform.
Civil, structural, powerline and specialist-engineering capability — all owned, all part of the same delivery platform.
— Powerlines and regional HV delivery
Thousands of kilometres of powerlines and HV electrical infrastructure built across Australia, with particular depth in remote and regional geographies.
— Civil and structural for energy infrastructure
Large-scale civil and concrete works for energy, industrial and connection projects — including tower assembly and erection on Project EnergyConnect, the largest transmission project in Australian history.
— Civil construction and maintenance
Broad civil construction, infrastructure and maintenance services delivered at national scale across energy, rail and industrial sectors.
— Specialist engineering and wind measurement
Hundreds of wind measurement campaigns, specialist engineering and modular manufacturing for energy infrastructure — known in the wind sector for deep technical capability and remote delivery.