If you’re told "it can’t be done" think again. Tenacity, energy, and innovation are embedded within our DNA.

Hennessy’s purpose is straight forward – we’re here to power New Zealand industry.

Solving mission critical problems for industry is what we do. And we do it superbly.

With a formidable track record in industrial electrical and control system solutions, we supply expertly tailored technical solutions, delivering around the clock service support – 365 days a year - so NZ’s key industries maintain production.

With foundations firmly in electrical engineering we understand NZ leading industries and their world class assets. Innovative projects for Contact Energy, Dairy Goat NZ, Greenlea Meats and Inex reflect the team’s robust reputation and expert capabilities.

Our Services

Electrical Services

Electrical Services

Hennessy are leading providers for commercial and industrial electrical needs, EV charger installation, control systems solutions and electrical maintenance and repairs.

Industrial Automation

Industrial Automation

We offer bespoke design, planning and installation of production factory and warehouse automation systems for supply chain manufacturing, food and beverage production, robotics, retail and agricultural industries.

Instrumentation Services

Instrumentation Services

Hennessy keep critical process instruments up to date using the latest calibration equipment from Europe, certified to international standards. We check temperature, pressure, voltage, current and frequency instruments, and more.

Electrical Engineering

Electrical Engineering

With decades of experience in electrical engineering, our expert electricians can assist with a variety of electrical needs, from commercial general lighting right through to switchgear and transformers for heavy industry.

Electronics Services

Electronics Services

Our qualified engineers and software designers can integrate software and electronics to control and monitor production processes for a wide range of industry, customized to each company’s unique needs.

Mechanical Services

Mechanical Services

Electrical checks on mechanical equipment is a breeze with our knowledgeable team. Our experienced, skilled and quality technicians can undertake assembly and installation of production equipment, machinery and small civil works.


Taupo District Council

Taupo District Council

Wastewater Treatment upgrade
Seals Winslow

Seales Winslow Whanganui

Upgrade & Installation of Pellet Plant


Waste Water Treatment
PFS Engineering

PFS Engineering Ltd

Non-Combustible Gas upgrade (NCG)
open quotes

Simone told me about the excellent job that your team is doing there, so far we are on line with our ambitious schedule.

I think that would represent an absolute world record for the wiring operation for a 20 MN press.

Project Manager

Well done to all those involved in the design, fabrication, assembly and electrical construction of our machines. Not only have you delivered them on or before schedule, but you’ve also done it impressively. Thank you.

Kevin M. McCann
Superior Novelty Equipment, Inc. USA

Thank you for the level of service that your company provides. Your company has a good attitude, your staff act very professionally, providing good advice, being punctual and not to mention work completed is of a good standard and done in good time. There is also a good level of trust and I do appreciate the effort you all put in. Please relay my thanks to everyone and especially to Paul.

Marty Tissink
Maintenance Co-ordinator
Taylors Group Ltd

On behalf of the Dairy Goat Co-op, I wish to thank those people that battled on Tuesday afternoon into Wednesday and again on ANZAC day to help DGC with scoop inserter robots that had ceased working. Often work calls for us to step out beyond the normal hours and this is a huge inconvenience in our lives. I am very appreciative and again thank you for supporting us. I think we have resolved an issue that has perhaps been there for some time.

We are fortunate that we have good support companies (with very good people) supporting our operations.

Brent Prankerd
General Manager Manufacturing
Dairy Goat Co-operative (N.Z.) Ltd

Thanks for being so professional in working through all the issues that “popped” up from time to time. Having good Electrical and Instrument people like you guys makes a big difference to a job like this.

Don Watson
Don Watson Electrical Engineering Ltd

Please pass on our sincere thanks and appreciation to David Kinghorn for his professional advice and practical help on many occasions and more currently his exceptional assistance with both getting our Omet up and going and timely consideration in working on the Omega and with the supplier’s technician over the last week.

We have been privileged to have our electrical and electronic requirements met by Hennessy’s over a few years now and really do appreciate the level of service we are always afforded, to a man your team is pleasant, professional and always polite which you can be proud of, Labelmakers appreciates this very much and enjoys the relationship thank you.

Jody Cook
Technical & QA Manager
Labelmakers Ltd

It was a pleasure to experience Don and his guys working so well in extremely taxing conditions over the weekend. Outside was disgustingly unpleasant but your guys stuck to task and we are all up and running this morning – #1 goal achieved, fantastic.

Please pass my thanks onto the team.

Andrew Jaques
General Manager
Arborline Products Limited

Thanks heaps for sorting out the cables for the new CNC. The boys were awesome.


Just wanted to acknowledge great consistent performance from Ian, Anthony & Tyrone over the last month.

Really good detail and accuracy coming through on the invoices and not to many surprises in the costs. Thanks to you all for pulling this together.

Guy Evans
Maintenance Manager
Dairy Goat Co-operative (NZ) Ltd

Yesterday we had a successful production start-up on the laminator Chop Knife. The Chop Knife has since been running well and all emergency stops, interlocks and guarding etc has been reviewed via a Machine hazard ID report. The project was well run with no major safety or hardware issues.

Thank you for the excellent way in which safety and work co-operation was conducted, the long hours worked and the on-time completion. We are now back to full production.

Tony Antoniadis
Facility Manager Specialty Boards, Oji Fibre Solutions
Packaging NZ

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 0800 243 243)

© 2024 Hennessy Group Ltd
envelopesmartphonecross linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram