Pukete, Hamilton
Location
December 2025
Completed
Downey Construction
Client
Hamilton City Council
End client
65kWp DC / 50kW AC
System size
80,065 kWh
Annual output
130 x Trina 500W
Panels
GoodWe GW50KS-MT
Inverter
Project Overview
Pukete Neighbourhood House is a council-owned community building in Pukete, Hamilton. We delivered a 65kWp DC, 50kW AC commercial solar system there in December 2025, turnkey, for Downey Construction, with Hamilton City Council as the end client. That covers the design, the structural engineering, the install on a Dimondek profiled metal roof, the commissioning and the live monitoring. It's the kind of job where the engineering and the site coordination matter as much as the panels themselves.
The Challenge
The building was still under construction when we came in. The roof is a Dimondek profiled metal roof, so the mounting had to match the profile exactly, the structure had to take the extra loading, and the whole install had to fit around a live construction site and Downey Construction's build programme. Because the end client is Hamilton City Council, the system had to meet council standards and come with proper engineering documentation, not just a handover sheet.
Our Solution
We delivered the project turnkey, from structural verification through to a live, monitored system handed over to Downey Construction and Hamilton City Council. Every part of the system was specified, engineered and fitted by our own registered crew.
- Structural verification and engineering sign-off before any panels went up
- Clenergy SolarRoof mounting matched to the Dimondek roof profile
- 130 Trina 500W N-Type panels across seven PV strings
- GoodWe GW50KS-MT 50kW commercial inverter with a SEC1000 for monitoring
- Commercial-grade protection, isolation and labelling
- Commissioned and handed over with live monitoring and full documentation
Engineering Highlights
The engineering coordination is what sets a proper commercial install apart from just bolting panels to a roof. On a Dimondek roof going onto a council building, the structure and the fixings had to be right, and we had the paperwork to prove it.
Dimondek roofing
The roof is a Dimondek profiled metal roof. We matched the Clenergy SolarRoof mounting system to the exact profile so the fixings land correctly and the roof's weather-tightness and warranty aren't compromised.
Pull testing
We pull-tested the roof fixings to confirm the mounting would hold the designed wind and dead loads before committing to the full array.
Structural verification
The roof structure was checked for the added panel and wind loading, so the building is signed off for the extra weight.
Engineering approval
Independent engineering sign-off was obtained before install, giving Downey Construction and Hamilton City Council the documentation they needed.
Commercial coordination
We worked within Downey Construction's build programme and site rules, sequencing the solar around the other trades and keeping the programme moving.
Roof Engineering
The Dimondek roofing profile needed a clamp mounting system. At the time of the project, Clenergy didn't have a certified fixing solution available for this specific roof profile. Rather than hold the job up, we carried out roof pull-out testing in-house to generate the engineering data needed for structural verification. The completed testing was independently reviewed and accepted by both Clenergy and Dimondek, so the mounting solution could be approved and installed while the construction programme kept moving. This approach avoided delays, maintained the construction programme and provided an engineered fixing solution accepted by both Clenergy and Dimondek.
Attention to Detail
Commercial solar isn't only about performance. The finished installation should also look like it belongs on the building. The DC cable tray lid was powder coated to match the roof colour, so the cable management blends into the roof instead of standing out. It makes no difference to the electrical performance, but it's the level of finish we aim for on commercial work.
Lessons from this Project
A few things worth understanding if you're planning a commercial solar build.
Why the Dimondek roof required engineering
A Dimondek profiled metal roof needs a clamp mounting system, and not every clamp is certified for every profile. When there's no off-the-shelf certified fixing, the mounting has to be engineered and tested for that specific roof before it goes on.
Why structural verification matters
Solar panels and mounting add weight and wind load to a roof. Structural verification confirms the building can take that loading, so the install is signed off properly rather than guessed.
Why commercial systems need engineering coordination
Commercial roofs, live construction sites and council clients come with real compliance and documentation requirements. Engineering coordination means the structural, electrical and building sides all line up before the panels go up.
Why monitoring is important
Live monitoring shows how the system is actually performing, flags faults early and gives the building owner proof of the generation. On a commercial system, that data is part of the handover, not an extra.
Why early involvement reduces delays and redesign costs
Bringing the solar contractor in during the build, not after it, lets the system be designed around the actual roof, the actual load and the build programme. It avoids retrofitting, redesign and the delays that come from bolting solar on as an afterthought.
System Performance
The system is sized to offset a big chunk of the building's daytime load. Here are the headline numbers, scannable rather than buried in a paragraph.
65kWp
DC array size
50kW
AC inverter capacity
80,065
kWh annual generation
130
Trina 500W N-Type panels
GW50KS-MT
GoodWe inverter
SEC1000
GoodWe monitoring
SolarRoof
Clenergy mounting
7
PV strings
Commercial
Protection and isolation
Live
Remote monitoring
Equipment Installed
Every component is commercial-grade and matched to the roof and the load.
- 130 x Trina 500W N-Type solar panels
- GoodWe GW50KS-MT 50kW commercial inverter
- GoodWe SEC1000 smart meter and monitoring
- Clenergy SolarRoof mounting system, matched to the Dimondek profile
- Seven PV strings with commercial-grade DC isolation and protection
- Live monitoring and remote performance reporting
Live monitoring is set up through the GoodWe SEC1000, with remote performance reporting. We also handle ongoing monitoring and servicing for the systems we install.
Why This Project Matters
This is a council-owned community building, delivered turnkey during construction for a commercial builder, with Hamilton City Council as the end client. It shows we can handle the engineering, the paperwork and the site coordination, not just the panel fitting. Downey Construction and Hamilton City Council get a documented, engineered system with monitoring, and the building runs on solar for the community that uses it. It's a strong example of commercial solar done properly in Hamilton. It also shows our ability to work alongside builders, engineers and consultants during construction, so the solar system is fully integrated into the project rather than bolted on afterwards. That's an important difference for commercial clients.
Read more about Solar Hamilton, our commercial solar services, battery storage options, and funding and finance for commercial projects, or learn about 2E Electrical.
Why Choose 2E Electrical
We're a local Waikato electrical contractor, and commercial work like this is where we're strongest.
Registered electricians
Qualified, registered electricians design, fit and sign off every system, fully compliant.
Turnkey commercial
Design, engineering, install, commissioning and monitoring, all from the one crew.
Engineering-led
Structural verification, pull testing and engineering sign-off before panels go up, not after.
Local Waikato crew
Based in Hamilton. We know the WEL Networks system and the local building scene.
Monitoring and servicing
We set up live monitoring and back it up with ongoing local servicing.
Battery-ready
Systems are designed so storage can be added later if it makes sense.
Services Provided
- Site assessment and load profiling
- Structural verification and engineering sign-off
- Pull testing on the Dimondek roof fixings
- Commercial solar system design
- Supply and install of panels, inverter and mounting
- Commercial-grade protection and isolation
- Commissioning and performance testing
- Live monitoring setup
- Handover documentation
Project Gallery
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Commercial Solar
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If you've got a commercial build, a community facility or a business roof in the Waikato, we'll come out, look at the site and the load, and show you what's possible, with engineering and honest figures.
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