One.nz
Project type: Solar Power
Location: 30 Daldy Street
This project involved the delivery of a large-scale rooftop solar installation designed to significantly offset the building’s energy consumption and support the achievement of a higher Green Star rating. Our team worked closely with the wider project group to deliver a high-capacity, future-focused system while maintaining strict quality and programme requirements.
Services
Our scope of work included the installation of 292 solar panels across two roof areas. Roof A was fitted with a 110kVA inverter, while Roof B incorporated two 25kVA inverters, providing a robust and efficient solar generation system.
The installation required over 250 metres of DC solar cable tray across the roof and more than two kilometres of cabling throughout the project. Each panel was supported by up to four mounting rails to meet required wind load ratings, ensuring long-term durability in New Zealand conditions.
To maintain a clean roof environment and minimise contact with swarf, all cable trays were pre-cut to length in the basement before being lifted and installed on the roof and within the plant room. We utilised HELIOS mounting brackets, carefully matched to the roof profile, and followed strict alignment methods to ensure all panel rows remained perfectly straight throughout the installation.
Challenges
The project was delivered under a tight construction programme, with sections of the roof still under construction during key stages. To mitigate time pressures, we pre-built and staged long cable tray sections in advance. This allowed for rapid installation once access was available, helping to maintain momentum and keep the project on track without compromising quality.
Timeline
The solar installation has been successfully completed and now forms a key component of the building’s sustainability strategy, delivering long-term energy efficiency and environmental performance benefits.
