150 kWp / 150 kVA SOLAR PV ROOFTOP SYSTEM
The City of Swan Administration Centre solar PV project involved the design, installation, testing, and commissioning of a grid-connected photovoltaic (PV) system to improve the facility’s renewable energy generation capacity and reduce reliance on grid-supplied electricity.
The project was designed to maximise onsite solar energy utilisation by integrating a high-efficiency PV array across multiple roof profiles while addressing site-specific challenges associated with roof orientation, shading, and access requirements. The completed installation provides a reliable renewable energy solution to support the facility’s energy
management and sustainability objectives.
System Size
- Solar PV System Capacity: 150 kWp DC
- Total Inverter Capacity: 150 kVA AC
- System Type: Grid-connected three-phase solar PV system
- Inverter Configuration:
1 × Fronius Tauro Eco 100-3-D – 100 kVA inverter
1 × Fronius Tauro Eco 50-3-D – 50 kVA inverter - Grid Connection: Integrated with the existing low-voltage electrical distribution system.
The PV system was installed across two different roof structures:
- Centre low-pitch Klip-Lok roof
- High-pitch corrugated sheeting roof
Equipment Used
Solar PV Modules
- Manufacturer: Trina
- Model: TSM-500NEG18R.20
- Total PV capacity: 150kWp
- Module Rating: 500W per module
Inverter System
- Manufacturer: Fronius
- Models Installed
Fronius Tauro Eco 100-3-D (100 kVA)
Fronius Tauro Eco 50-3-D (50 kVA) - Rated Output: 150 kVA
- Configuration: Three-phase grid-connected inverter
Installation Challenges
The City of Swan Administration Centre project presented several technical and safety challenges due to the complexity of the existing roof structures. A major challenge was the installation of PV modules on the high-pitch corrugated sheeting roof, with an approximate roof pitch of 45 degrees, which required additional planning and specialised installation methods to ensure safe access and secure mounting of the solar array.
Due to the steep roof angle, a levelled access walkway fitted with guardrails was installed to provide a safe working platform for personnel and facilitate the installation and future maintenance of the PV system. This edge protection system enabled safe movement across the roof while complying with working-at-heights requirements. Additional challenges included working across two different roof profiles, consisting of the centre low-pitch Klip-Lok roof and high-pitch corrugated sheeting roof. Appropriate mounting solutions were implemented to suit each roof type while maintaining structural integrity and weatherproofing.
Due to the site being an operational council facility, detailed planning and coordination were undertaken to minimise disruption to staff and visitors. A crane was utilised for lifting PV panels, inverters, and installation materials onto the roof, with crane staging planned to ensure safe lifting operations and efficient material handling. The installation team implemented appropriate safety controls, including controlled access areas, fall protection measures, and coordinated work activities, ensuring the project was completed safely while maintaining normal council operations.
Outcomes & Client Benefits
The completed 150 kWp / 150 kVA grid-connected solar PV system at the City of Swan Administration Centre has enhanced the facility’s renewable energy generation capability through the integration of high-efficiency PV modules, module-level optimisation, and advanced Fronius inverter technology. The system achieved approximately 8,022.9 kWh of solar energy production over
the reporting period, contributing to reduced grid energy consumption and improved onsite renewable energy utilisation.
- Successful integration of a 150 kWp DC PV array with a 150 kVA AC inverter capacity, increasing the facility’s renewable energy generation capability.
- Improved energy yield through the deployment of optimisers on PV modules installed within shaded areas, reducing the impact of partial shading and improving module-level performance.
- Enhanced system reliability and operational efficiency through the installation of Fronius Tauro Eco inverter technology, providing robust performance for commercial-scale solar applications.
- Optimised PV generation across multiple roof configurations, including low-pitch Klip-Lok roofing and high-pitch corrugated sheeting roofing, through appropriate system design and
installation practices. - Improved monitoring and operational visibility through advanced inverter monitoring capabilities, allowing effective performance tracking and system management.
- Reduced daytime grid demand by increasing onsite renewable energy contribution to support the facility’s electrical load profile.
- Improved long-term energy sustainability by reducing dependence on conventional energy sources and supporting the City of Swan’s renewable energy objectives.
- Delivery of a safe and compliant installation while maintaining council operations and minimising disruption to facility users during construction activities.
