Hennessy’s decades of experience mean our expert electrical engineers are recognised for their engineering expertise and ability to cultivate a total engineering solution for our commercial and industrial clients.
We provide detailed schematics and drawings utilising CAD software programmes for accurate design and drafting, offer consultancy services for your electrical engineering needs, and ensure machine safety.
Using the latest in industry advances, we’re flexible to adapt to changing technological and industry needs, and proud to be a leading force in electric vehicle charging (EVC) design.



From high-stakes greenfield electrical project work to EVC installations, our clients count on us for our technical know-how, project experience, and reliable, expert support to help keep their project running smoothly.

Hennessy offers a comprehensive range of electrical services, from appliance testing and thermal imaging surveys to ongoing maintenance and prompt breakdown support.

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.

Hennessy offer fully qualified instrument Technicians who carry out Instrumentation Calibration, commissioning, and installation services for clients across the Waikato region.

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.