Case Study: 531.42kW Solar + 916kWh Battery Installation at Sienna Wood
Client: Sienna Wood
Project Size: 531.42kW DC Solar + 916kWh Battery Storage
Project Type: Commercial Solar & Battery System
Location: Hilbert, Western Australia
Project Overview
Westsun Energy was engaged to design and install a 531.42kW DC commercial solar system paired with a 916kWh battery energy storage system at Sienna Wood.
The objective of the project was to deliver a large-scale renewable energy solution capable of reducing reliance on grid electricity, improving long-term energy certainty, and providing on-site battery storage to optimise energy usage.
As a WA-based commercial solar EPC provider, Westsun Energy delivered an integrated solar and battery solution engineered for reliability, high energy production, and long-term operational performance.
Challenges
→ Large-Scale System Integration: Designing a solar and battery system capable of delivering consistent energy generation while integrating seamlessly with existing electrical infrastructure.
→ Energy Management Optimisation: Ensuring solar production and battery storage capacity worked together to maximise self-consumption and minimise grid reliance.
→ Installation Logistics: Coordinating installation of racking, DC cabling, cable trays and battery systems efficiently while maintaining safety and project timelines.
Solution
Westsun Energy engineered and installed a high-performance solar and battery system featuring:
→ 1,042 × 510W Canadian Solar Panels: High-efficiency modules selected to maximise solar generation across the available installation area.
→ 4 × Sungrow 110kW Inverters: Delivering reliable three-phase power conversion with advanced monitoring and system control.
→ 4 × Sungrow ST225kWh Battery Units: Providing 916kWh of energy storage to capture excess solar generation and improve energy utilisation.
System design focused on:
→ Maximising Energy Production: Delivering strong solar output to significantly offset grid electricity consumption.
→ Battery Energy Optimisation: Storing excess daytime solar production for later use and improving overall system efficiency.
→ Reliable Engineering: Ensuring the system meets Australian standards and performs consistently in WA conditions.
Results & Benefits
→ Solar System Size: 531.42kW DC
→ Battery Storage Capacity: 916kWh
→ Solar Panels Installed: 1,042 × 510W Canadian Solar modules
→ Inverter Capacity: 4 × Sungrow 110kW inverters
→ Battery System: 4 × Sungrow ST225kWh units
→ Energy Resilience: On-site battery storage enables improved energy independence and load management.
→ Cost Reduction: Solar generation helps reduce long-term electricity costs.
→ Sustainability Impact: Significant reduction in carbon emissions through large-scale renewable energy integration.
Conclusion
The Sienna Wood solar and battery installation demonstrates how integrating large-scale solar generation with battery energy storage can significantly improve energy efficiency and operational resilience.
By installing a 531.42kW solar system paired with 916kWh of battery storage, Westsun Energy delivered a renewable energy solution designed for long-term performance, reliability, and sustainability.
This project highlights Westsun Energy’s capability in delivering advanced commercial solar and battery systems across Western Australia, engineered for performance, reliability, and future-ready energy management.
For more information on how Westsun Energy, Perth’s best commercial solar installer, can assist with commercial solar solutions, contact us today.
