Electrical Services

We’re your boots on the ground when you need them most.

From 24/7 breakdown cover to scheduled maintenance and compliance testing, we keep Waikato's commercial and industrial sites safe, compliant, and running — and we're on call when something goes wrong.

What we do
Hennessy handles the full range of ongoing electrical support for commercial and industrial sites: site-based maintenance, 24/7 breakdown response, lighting repair and re-lamping, shift cover, thermal imaging surveys, appliance testing, and periodic verifications (IQP). We work on hazardous sites and live operations, for clients who need their electrical systems to keep working and a team that shows up when the call comes in.

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Industrial Automation

How our process works

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Assess

 We get to know your site, your equipment, and your compliance obligations, so we know what to look for before something fails.

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Maintain

Scheduled maintenance, thermal surveys, and appliance testing catch problems early and keep your systems certified and compliant.

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Respond

When something does go wrong, our fully stocked vehicles and 24/7 breakdown team are on their way, minimising downtime and loss.

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Stay on

We don't disappear after the job's done. Hennessy stays on as part of your site's ongoing electrical support, ready for the next breakdown, inspection, or maintenance round.

Proof in the field:
Waitoa Protein Plant

When Waitoa Natural Proteins needed a full electrical build for their new greenfield protein plant, they brought Hennessy on for the long haul, not a single job. Over 36 months, our team delivered the complete electrical scope: switchboards, motor control centres, safety systems, and power distribution for a 24/7 industrial facility.

"The team at Waitoa has been impressed by the sheer quantity of electricians we have on the project to deliver the expertise required, and the 'can do' attitude of our team as we have been able to accommodate all of their design changes to date." - Glen Loft

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Who we work with

Hennessy works with the Waikato region's commercial and industrial businesses, including dairy production plants, manufacturing facilities, logistics operations, and large-scale commercial construction. Our clients aren't looking for a one-off job. They're looking for an electrical partner who understands their site and sticks around.
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Breakdown Support

Breakdown Support

24/7 breakdown response, reducing downtime when things go wrong

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Maintenance

Maintenance

Site-based maintenance, lighting repair and re-lamping to keep operations running

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Site Based Maintenance & Shift Cover

Site Based Maintenance & Shift Cover

On-site cover that keeps your operation moving through resourcing gaps

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Thermal Surveys

Thermal Surveys

Switchboard thermographic surveys backed by thermal imaging expertise

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Appliance Testing

Appliance Testing

Appliance testing to keep your site safe and compliant

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Periodic

Periodic Verifications & IQP

IQP services and periodic verifications to keep you certified

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Request Support

If you require support please call our freephone number 0800 243 243 or fill out the support request form below.

(For urgent support you may wish to call us on 07 849 2355)

© 2026 Hennessy Group Ltd
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