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Paramatta Square

Industry
Location
Project size
First year bill saved
First year energy generate

Project Overview

Venergy Solar partnered with Walker Corporation to deliver a high-performance rooftop solar system for 3 Parramatta Square, one of Western Sydney’s most iconic commercial developments and home to NAB. The project involved the engineering, procurement, and installation of a 99.96kW solar PV system on a fully operational high-rise building in a dense CBD environment.

Utilising 196 Trina Solar TSM-510DE18M(II) panels and a dual inverter setup comprising SolarEdge SE50K and SE30K units, the system was designed to maximise rooftop yield while navigating spatial limitations and structural compliance. Venergy also developed a custom inverter bracket and implemented a master-slave PV distribution board to work within restricted DB space.

The system supports the building’s 5.5 NABERS Energy Rating and integrates smart monitoring to ensure long-term performance. Delivered with zero disruption to tenants, this project reinforces Venergy’s capability in executing complex commercial solar solutions at height, on time, and within budget.

“The 3 Parramatta Square solar installation supports our long-term sustainability targets while maintaining the premium commercial standards expected of a landmark asset like this.”
Representative
Walker Corporation

The Challenge

The 3 Parramatta Square project posed multiple technical and logistical challenges. As a high-rise commercial building located in the heart of Parramatta’s CBD, rooftop access was restricted, structural exclusion zones were in place, and distribution board space was limited. The solar installation needed to integrate seamlessly into the building’s existing infrastructure without interrupting operations or compromising aesthetics, while also supporting the site’s NABERS energy targets.

The Solution

Venergy engineered a custom rooftop layout using high-efficiency 510W Trina Solar panels, allowing full system capacity within a constrained area. A dual inverter system with split-phase configuration was designed to operate within limited DB capacity, while a freestanding bracket was developed to mount one inverter near the connection point where wall space was unavailable. Installation was completed using GEDA SolarLift technology to ensure safe, efficient lifting of materials without interrupting business operations.

The Results

The system is projected to generate 125.1 MWh in its first year, delivering approximately $31,408 in energy savings (ex GST). It contributes to reduced operational costs and strengthens the building’s NABERS performance, without any compromise to tenant experience or site function. The project was completed safely, on schedule, and now stands as a best-practice example of clean energy integration in a commercial high-rise setting—enhancing both building value and environmental performance.

First Year Savings

$31,408

Payback Period

4 yrs 1 mth

Trees Planted/ annual

5,294

CO2 saved/ annual

115.09 tonnes

Matthew Wilkins

CEO | Venergy Solar Australia

“This project is a great example of how tailored engineering and smart planning can overcome the complexities of high-rise solar. We’re proud to have delivered this for Walker Corporation, on time and without compromise.”