Supply for Speight’s 3MW Electric Boiler
When Speight’s Brewery began planning the installation of a new 3MW electric boiler, NES was engaged by LION NZ to design and deliver the electrical infrastructure needed to support the system.
Working alongside Scorpion Engineering Ltd, the NES team designed and installed the full electrical supply from the high voltage (HV) network through to the low voltage (LV) supply feeding the electric boiler. The project required careful coordination and engineering to ensure the brewery’s new system could operate safely and reliably within an active production environment.
A Large-Scale Industrial Installation
The project was delivered over a 16-month period, beginning with the initial electrical design and continuing through equipment procurement, installation, commissioning and final livening of the system.
A number of major components were carefully selected and installed to support the 3MW supply, including a high voltage circuit breaker, a 3.150MVA transformer, and a high current capacity main switchboard.
Because of the scale of the equipment involved, the project required significant planning around logistics, installation and integration. Large components were sourced both locally and internationally and transported to site before being carefully installed within the existing brewery infrastructure.
Throughout the process, the NES team worked to ensure the new electrical systems could be safely integrated with the brewery’s existing operations without disrupting production.
One of the standout aspects of the project was the level of collaboration involved.
NES’s Central Otago team led the project management and high voltage installation, while the Southland team delivered the low voltage installation. Electrical design was undertaken by Scorpion Engineering Ltd, who worked closely with NES and suppliers to source the specialised equipment required for the project.
Several key subcontractors also played an important role in delivering the installation, including:
Titan Cranes Ltd, who managed the complex lifting and positioning of large electrical components
SFC Electrical, who carried out the high voltage testing
Neutral Inspections Ltd, who completed the final inspection and sign-off
Together, these teams delivered a complex industrial installation safely and efficiently.
The highlight of the project was seeing the collaboration between multiple organisations and NES teams come together to deliver a high-quality result.
Despite the technical complexity, international equipment procurement and installation challenges, the project was delivered safely, without incident, and within budget.
The new electric boiler installation provides a significant environmental benefit for the Speight’s Brewery operation.
By supporting the transition from an LPG-fired boiler to an electric system, the project helps reduce LION NZ’s carbon emissions and overall carbon footprint while maintaining the energy requirements needed for brewery operations.
The successful installation of the electrical supply for the 3MW electric boiler demonstrates NES’s capability to deliver complex industrial infrastructure projects - from high voltage design through to final commissioning.
Projects like this highlight the strength of NES’s teams across Southland and Central Otago and the value of collaboration when delivering large-scale electrical installations.




