High Voltage Termination Experts

High Voltage Done Right. Every Time.

Australia’s mining, renewables, and infrastructure sectors trust The High Voltage Company to get HV work done right.

  • Qualified Electricians

  • QA Package Included

  • Australia Wide

Trusted by Industry Leaders

From major mines to hospitals and renewable energy sites - these are some of the names that trust us with their HV work.

Our Capabilities

Full-Scope HV. No Gaps.

From a single cable termination to a multi-million dollar renewable energy installation, we handle the full range of high voltage electrical work - including specialist capabilities most contractors can't offer.

HV Cable Terminations 

Cold shrink, heat shrink, elbows, and inner cone elbows across XLPE, EPR, trailing cable, and paper lead cable up to 66kV. 

Transition Joints 

Transition joints on paper lead to XLPE cable is something we specialize in and complex capability. Many competitors refer this work to us.

HV Testing 

Our team are dual-qualified as electricians and cable joiners - we test our own work and supply full documentation.

HV Installs 

We supply and install underground HV cable, transformers, switchgear, HV switchboards, and ring main units for your project.

Why HV Co

High Standards. No Shortcuts.

HV Co exists to raise the bar. Show up, produce high quality work, and leave something worth being proud of.

Difference #1

We test our own work

Most HV contractors can't. Our team holds dual qualifications as electricians and cable joiners - which means every installation we complete, we test ourselves. No third party or gaps in accountability.

Difference #2

We have the team to back it up

Our experienced people. Two regional hubs. Where most competitors operate as one or two person operations, we can mobilise quickly and handle large-scale project demands without compromising quality.

Difference #3

QA package included

Every job is backed by a full quality assurance package. You'll have the paperwork, the test results, and the evidence of a job completed to standard.

Difference #4

Trusted by the industry

Mining, renewables, hospitals, defence. The clients who rely on us don't have room for contractors who underdeliver. Anglo American, BMA, Pembroke, Ramsay Health Care. Trust earned on-site, job by job.

Case Studies

Work We Stand Behind

From a single cable termination to a multi-million dollar renewable energy installation, we handle the full range of high voltage electrical work - including specialist capabilities most contractors can't offer.

Renewables

15km of Cable on 200MW Battery Storage Commissioning

15km of 33kV cabling installation, termination and commissioned on 200mW Battery Energy Storage System.

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Mining

66kV Haul Road Crossing Underground Installation, Termination & Testing

Installation, Termination and testing of a 66kV haul road crossing underground cable allowing mine production operations to safely continue uninterrupted...

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Mining

CQ Mining Site Emergency HV Cable Fault Repair

Emergency HV cable fault repair and full cable replacement on High Voltage plant. HV Co was able to mobilise to...

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Testimonials

Trusted by Teams That Can’t Afford Mistakes.

From mining and renewables to hospitals and infrastructure, clients rely on HV Co to deliver quality high voltage work - safely, professionally, and without shortcuts.

  • “We’ve used HV Co on a number of HV termination and jointing projects and have been very satisfied. The team is professional, knowledgeable and easy to work with on site. Their workmanship is thorough, safety-focused and meets industry standards. Communication and coordination were strong, and they completed tasks efficiently with little disruption. Reliable choice for HV termination, jointing, testing and commissioning.”

    Jeremy Phillips
    Richglen
  • “We have engaged HV Co for high-voltage cable termination and jointing projects. Their team consistently produced high quality HV terminations with zero failures, demonstrating deep technical knowledge, professionalism, and flexibility around project scope, scheduling and site constraints. Their meticulous workmanship and strict adherence to safety and industry standards gave us full confidence in the execution of all HV activities. Communication was clear and timely, and HV Co’s collaborative, problem-solving approach ensured works were completed on schedule with minimal disruption. I recommend HV Co for high-voltage termination, jointing, testing and commissioning — a dependable contractor that delivers quality outcomes.”

    Jim Waterreus
    Cell Engineering
  • “HV Co supported several of our high-voltage cable termination and jointing jobs, and they were outstanding. The crew were experienced, responsive and pragmatic, accommodating changing site conditions and tight timelines without compromising quality or safety. Their attention to detail and technical competence made coordination with our team straightforward, and they proactively resolved issues before they affected progress. They finished work on time and with minimal impact to other trades. I’d happily hire HV Co again for termination, jointing, testing or commissioning work. ”

    Thomas O’Connell
    Products for Industry
  • “I’ve worked with HV Co for the last couple of years now and have been nothing but supportive of the way they operate. The team is always happy to help, consistently on time, and brings a great attitude to every job. We’ve built a really strong working relationship, including with Hv co and it’s one I expect will continue for a long time.”

    Dan Murray
    GAP Industries
  • “I have had the opportunity to engage HV Co for a number of high voltage cable termination and jointing projects, and their team has consistently delivered outstanding results. The HV Co team are highly knowledgeable, professional, and extremely accommodating when it comes to project requirements, scheduling, and site conditions. Their attention to detail and commitment to quality workmanship provide confidence that all high voltage works are completed safely, efficiently, and to the highest industry standards.”

    Clint Storch
    Instrumentation & Electrical Pty Ltd
  • “Throughout our projects, HV Co demonstrated excellent communication, strong technical expertise, and a proactive approach to problem-solving. Their personnel worked seamlessly alongside other contractors and site teams, ensuring works were completed on time and with minimal disruption. I would not hesitate to recommend HV Co for any high voltage termination, jointing, testing, or commissioning works. They are a reliable and professional contractor that consistently delivers quality outcomes.”

    Diarmaid Cullen
    All Energy Co
  • “We’ve used HV Co on a number of HV termination and jointing projects and have been very satisfied. The team is professional, knowledgeable and easy to work with on site. Their workmanship is thorough, safety-focused and meets industry standards. Communication and coordination were strong, and they completed tasks efficiently with little disruption. Reliable choice for HV termination, jointing, testing and commissioning.”

    Jeremy Phillips
    Richglen
  • “We have engaged HV Co for high-voltage cable termination and jointing projects. Their team consistently produced high quality HV terminations with zero failures, demonstrating deep technical knowledge, professionalism, and flexibility around project scope, scheduling and site constraints. Their meticulous workmanship and strict adherence to safety and industry standards gave us full confidence in the execution of all HV activities. Communication was clear and timely, and HV Co’s collaborative, problem-solving approach ensured works were completed on schedule with minimal disruption. I recommend HV Co for high-voltage termination, jointing, testing and commissioning — a dependable contractor that delivers quality outcomes.”

    Jim Waterreus
    Cell Engineering
  • “HV Co supported several of our high-voltage cable termination and jointing jobs, and they were outstanding. The crew were experienced, responsive and pragmatic, accommodating changing site conditions and tight timelines without compromising quality or safety. Their attention to detail and technical competence made coordination with our team straightforward, and they proactively resolved issues before they affected progress. They finished work on time and with minimal impact to other trades. I’d happily hire HV Co again for termination, jointing, testing or commissioning work. ”

    Thomas O’Connell
    Products for Industry
  • “I’ve worked with HV Co for the last couple of years now and have been nothing but supportive of the way they operate. The team is always happy to help, consistently on time, and brings a great attitude to every job. We’ve built a really strong working relationship, including with Hv co and it’s one I expect will continue for a long time.”

    Dan Murray
    GAP Industries
  • “I have had the opportunity to engage HV Co for a number of high voltage cable termination and jointing projects, and their team has consistently delivered outstanding results. The HV Co team are highly knowledgeable, professional, and extremely accommodating when it comes to project requirements, scheduling, and site conditions. Their attention to detail and commitment to quality workmanship provide confidence that all high voltage works are completed safely, efficiently, and to the highest industry standards.”

    Clint Storch
    Instrumentation & Electrical Pty Ltd
  • “Throughout our projects, HV Co demonstrated excellent communication, strong technical expertise, and a proactive approach to problem-solving. Their personnel worked seamlessly alongside other contractors and site teams, ensuring works were completed on time and with minimal disruption. I would not hesitate to recommend HV Co for any high voltage termination, jointing, testing, or commissioning works. They are a reliable and professional contractor that consistently delivers quality outcomes.”

    Diarmaid Cullen
    All Energy Co

About Us

A Team That Takes the Work Seriously.

HV Co is a young, capable team built on a simple idea – do the job properly, every time, without making it complicated for the client.

With an experienced high voltage team, we’re based on the Sunshine Coast and in Central Queensland, and we work across Australia wherever our clients need us.

We move fast, we communicate clearly, and we leave every site with the job done properly and the QA package to prove it.

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Ready to Talk About a Job?

Talk to our experienced team. We can chat about your project and requirements, and get any information we need to provide a quote.