Harnessing energy appropriately to reduce risk and improve industrial energy efficiencies for increased productivity is all in a day’s work for our expert electrical engineers.
We know energy costs impact your bottom line and enabling energy management as a strategic resource requires active energy management.
We help demystify energy consumption and identify factors within your individual production processes to help take charge of your energy through monitoring, analysing and control. By understanding your critical cost inputs to manufacturing processes, we can help you track, monetise and manage energy costs to create cost advantages.
To transform and manage your organisation’s energy usage effectively, contact us today.



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.