Coll Electrical Limited - Twin Rivers Solar Farm

From April 2025 to February 2026, our team was on site delivering key electrical works for INTEC Energy Solutions at the Twin Rivers Solar Farm in Kaitaia, Northland.

Located in a remote area, this 31MW utility-scale solar development required detailed planning, strong logistics coordination, and a committed delivery team. Two crews operated on rotation throughout the project, staying out of town and working weekends to maintain programme momentum.

The Twin Rivers Solar Farm consists of:

- 55,832 ground-mounted frame PV modules

- 120 string combiner boxes

- 6 GE inverters

- 31MW generation capacity

It is capable of generating enough renewable energy to power more than 6,000 households annually - or the equivalent of charging approximately 25,000 electric vehicles per year.

Our scope of works included:

- Installation of all DC cabling and terminations

- Installation of all string DC cabling and terminations

- Installation of all HV cable installation

- Installation of underground fibre optics

- Installation of main earth ring around transformer

- Installation of all combiner boxes and terminations

- Installation of all inverters and terminations

- Connections of all PV modules

- Earthing and bonding

- Installation of weather, meteorological, and hydrologic stations

- Testing, commissioning, QA, and labelling of all works