Designing plants that can optimise capacity while adhering to capability restrictions equals a perfect solution for our commercial and industrial clients.
We utilise computer aided drafting (CAD) programmes for our designs and use a quality management system to check in with our clients every step of the design process to ensure we’re meeting requirements and are 100% on track.
We specialise in lighting design services for commercial and industrial applications along with Power Factor monitoring, design & correction and cable support structure design and build.
To create a customized electrical engineering design for your project, contact us.



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.