Our Services


and Design

Our qualified engineers and designers perform all manner of overhead and underground electrical distribution and transmission design, from small landowner rural connections through large residential URD projects, steel and concrete pole transmission lines and complex steel lattice towers analysis. The designs are completed using the latest applicable design software.


Every office maintains in house Level 3 design and engineering capabilities. We offer our clients innovative design solutions, with the vision to save costs whilst meeting the clients needs. NJ Construction produce 300+ certified electrical designs each year.


NJ Construction and our established partners have successfully performed end to end transmission design for pole lines, towers, and underground feeders. We work with our client and stakeholders to produce a rigorous and detailed design, to enable a seamless transition to construction.


NJ Construction and our established strategic partners have successfully completed the detailed design of significant substations. We produce high quality details and drawings to minimise issues during construction and commissioning.

Engineering and Design
Engineering and Design


NJ Construction has the workforce and plant to perform the complete range of overhead and underground electrical distribution infrastructure construction.


NJ Construction is the largest Level 1 Accredited Service Provider in NSW with offices in Queanbeyan, Dubbo, Alstonville, Port Macquarie and Sydney. NJ Construction has completed in excess of 5000 Level 1 projects and connections to the electricity network in NSW.

NJ Construction is accredited with Ergon Energy and Energex in Queensland and has an office in Brisbane.

Distribution Capabilities include;

  • Private Rural Extensions
  • URD
  • Commercial and Industrial
  • Street-lighting
  • Highway/ Road Conflict Area Relocations
  • Government and Defence Facilities Infrastructure
  • Rail Electrical Infrastructure
  • Mining Electrical Infrastructure
Transmission: 66kV line Moree
Transmission: 66kV line Moree


NJ Construction is the most self sufficient transmission construction business in Australia.
We pride ourselves on having the largest fleet of the latest specialist equipment and the experienced staff to build lines on poles and towers to 500kV.

Construction and Design

NJ Construction has in house capability to perform line design on poles to 132kV. We have established partners who can perform the complete design and structural member checks of steel lattice transmission towers to 500kV. NJ Construction are specialists in tension stringing and helicopter stringing techniques.

Projects of note include:

  •  Energex 110kV Murrarie Helicopter stringing of conductors and OPGW
  •  Essential Energy 132kV Dubbo to Narromine incl. OPGW
  •  TransGrid 330KV Bayswater and Bannaby Diversions
  •  Western Power 132kV TL for Emu Downs Windfarm
  •  Ergon Energy Awoonga Dam 66kV TL


NJ Construction is the leading provider of maintenance services to the Australian market for steel lattice transmission lines. Since 1997 NJ Construction has been providing services including changing steel members, changing bolts, replacing anti-climbers, preparation and application of corrosion protection and foundation repair.

NJ Construction has been a leader in developing innovative processes for transmission maintenance.

Projects of note include:

  • Fiji Electricity Authority Tower Refurbishment
  • Powerlink Refit Panel Members
  • Integral Energy 132kV Tower Refurbishment (600 Towers)
  • Energy Australia 132kV Steel Lattice Tower
  • Refurbishment including foundations (150 towers) Western Power South West Interconnector 132kV
  • Maintenance Standing Offer 2006-2007
  • Energy Australia Steel Lattice Tower Upgrade – Towra
  • Point Marine Park
  • Illawarra Electricity Steel Lattice Tower Upgrade
  • TransGrid Anti-climber Replacement


NJ Construction is the largest Level 1 ASP in NSW. With offices in Queanbeyan, Parkes, Alstonville, Port Macquarie and Sydney we provide coverage to the whole state.

Design Expertise

Every office maintains in house design and engineering capabilities. We offer our clients innovative design solutions, with the vision to save costs whilst meeting the clients needs. We work with our client to produce a rigorous and detailed design, to enable seamless construction. Specific maintenance and operation manuals are produced as required to support the completed installation.

Construction and Maintenance

NJ Construction was one of the first companies to become accredited to undertake contestable distribution work in NSW.

Our Capabilities include:

  •  HV installations both overhead and underground
  •  Street-lighting both highway and urban
  •  LV service mains and consumer mains
  •  Highway Conflict Area Relocation
  •  Property Development Electrical Reticulation
  •  Substation Construction
  •  Maintenance of HV infrastructure

NJ Construction has specialist experience working on complex sites including defence, highway, and industrial. These sites require detailed understanding of OH&S requirements and an ability to work around multiple contractors in an often crowded work environment.

NJ Construction has delivered some of the most significant projects in NSW

Projects of note include:

  •  Boeing/ Defence Riverina High Frequency Modernisation Project Design and Installation
  •  Leightons/ Defence Joint Operational Command HV Design and Installation
  •  Suzlon/ Downers Capital Hill Windfarm HV Collector System Design and Installation
  •  Kempsey Bypass Alliance Conflict Areas
  •  National Parks Iluka HV Cable Installation
  •  Burea of Meteorology Captains Flat HV Cable Installation
  •  Dept. of Commerce Polia 33kV Line Design and Construction
  •  Federal Highway Street-lighting
  •  Suzlon/ Downers Snowtown HV Installation
  •  Avalon Estate Wollongbar NSW – Design and Installation of 120 lots
Distribution:  Bega Bypass streetlighting and asset relocation
Distribution: Bega Bypass streetlighting and asset relocation
Substations: 22kV to 66kV Substation & Switchyard Moree
Substations: 22kV to 66kV Substation & Switchyard Moree


NJ Construction has demonstrated success with the delivery of complex substations. Our experience includes the provision of all services including design, civil works, building, electrical and commissioning.

Projects of note include:

  •  Defence/ Country Energy 66/22kV Bulgary Substation
  •  Country Energy Bomen 66/11kV Substation
  •  Country Energy Ashmont 66kV/ 11kV GIS Substation
  •  Railcorp Auburn Traction Substation
  •  Defence Bungendore Substation 66kV Tie-in
  •  Eastern Star Gas 132kV Substation Tie -in
  •  Leightons/ Defence Joint Operational Command Substations, including regulators


NJ Construction has extensive experience with the installation of a range of communications infrastructure from OPGW to ADSS and underground fiber and copper networks

Projects of note include:

  •  Macquarie Generation Bayswater ADSS installation on existing transmission line and through power station tunnel system
  •  TransACT Communications Service Installation Contract 2000 to 2003
  •  TransACT network reconstruction following Canberra Fires
  •  Energex OPGW replacement Nerang to Molendinar
  •  Country Energy Tamworth TL Construction including OPGW Installation and Testing
  •  Western Power Pinjara 330kV TL including OPGW Installation
Communications: ADSS Cable repairs Canberra
Communications: ADSS Cable repairs Canberra
Moree Solar Farm
Moree Solar Farm


 NJ Construction is the local solar expert for delivery of the electrical works packages. Our experience includes design and construction of new transmission line scope and upgrading existing infrastructure, design and construction of substations, installation of invertors, grounding, installation of electrical and communications cables, terminations and panel connections.

In the wind sector we are supplying our design and construction expertise in the overhead collector systems including OPGW, power supply, underground HV cables and terminations.

Projects of note include:

  • Moree Solar Farm
  • Gullen Range Wind Farm
  • Capitol Hill Wind Farm
NJ Construction Plant
NJ Construction Plant

Plant and Equipement

NJ Construction is a fast paced and forward thinking company with an impressive fleet to match. Boasting a fleet that includes more than 50 light vehicles, 16 Elevated Work Platform, 37 Trucks over 12tonne, 12 smaller trucks, 42 trailers and more than 15 miscellaneous pieces of plant including Bobcats, Forklifts and Cranes no job is too big or too small.

Some of the larger pieces of equipment such as 45m Elevated Work Platform, 55tonne Cranes, and various Crane Borers mean we have the ability to take on big jobs that include things like 66kv Transmission lines, Solar Farms, Windfarms, and anything related to electrical infrastructure on a large scale.

NJ Construction has all the test equipment associated with Overhead Powerline work underground power line work, Substations and Communications.

This equipment includes Micrometres, Earth Resistance Testers, PAT Testers, Portable Earths, Modiworks, Phase Rotation Indicators, Voltage Testers, Live line sticks, Megger, Very Low Frequencies Testers, Optical Time Domain Reflector Tester, Fibre Optic Splices, Theodolites, Dyno meters, Dynamic Cone Penetrations everything needed to complete any size job.



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+61 (0)2 6232 9400