Compliance and excellence are closely linked. As McKercher Corporation continues to evolve within the renewable energy sector, we remain committed to ensuring that every project, partnership, and accreditation meets our shared standards for quality, safety, and performance. This month’s bulletin highlights three key updates that are shaping our operations and partnerships.
Key points
- When integrating Battery Energy Storage Systems (BESS) with existing PV arrays, staff must distinguish between repairs (no new compliance needed) and alterations (full compliance reassessment required) under AS/NZS standards.
- PSW Energy’s Q3 success—marked by 15% installation growth and record customer satisfaction—demonstrates the strength of McKercher Corporation’s renewable partnerships and reinforces its market leadership.
- PSW Energy, Perth Solar Warehouse has achieved Sigenergy Silver Certified Installer status, affirming the company’s commitment to technical excellence, compliance, and industry best practice.
Note: These bulletins are primarily intended for McKercher Corporation staff. Non-staff members may familiarise themselves with this open-source compilation of accessible business communication.
Regulatory Changes: PV Arrays & BESS Compliance
Regulatory frameworks continue to evolve as battery technology becomes increasingly integrated into existing solar systems. One critical update affects how existing PV arrays are classified under compliance rules when paired with Battery Energy Storage Systems (BESS).
Repairs vs Alterations: The Key Distinction. When adding or modifying a BESS to an existing PV system, it’s vital to understand whether the work qualifies as a repair or an alteration:
Repairs: Activities that restore a system to its original operating condition—such as replacing identical components or fixing faults—do not require new compliance certification under AS/NZS standards.
Alterations: Any modification that changes the configuration, capacity, or function of an existing system—such as upgrading inverters, adding storage, or reconfiguring circuits—requires a full compliance reassessment to ensure the installation meets current standards.
Why It Matters: Understanding this distinction protects both the company and individual technicians from compliance breaches. This ensures:
- Continued alignment with the Clean Energy Regulator and AS/NZS standards.
- Assurance that McKercher Corporation installations remain legally compliant and safe.
- Confidence that clients receive systems built to the latest and highest quality benchmarks.
Understanding regulatory definitions is crucial for our operational integrity as the renewable energy landscape evolves. Deeper understanding: Regulatory Update: Compliance Requirements for Battery Energy Storage System (BESS) Installations with Existing PV Arrays
Subsidiary Strength: PSW Energy’s Q3 Results
PSW Energy continues to achieve remarkable results. The Q3 performance report highlights a significant increase across key metrics—sales growth, installation efficiency, and customer satisfaction—demonstrating the strength of McKercher Corporation’s renewable energy network.
Highlights from Q3, 2025
Improved growth in residential solar and battery installations compared to the previous quarter.
Record customer satisfaction levels of purchasing customers, reinforcing trust in PSW Energy as a subsidiary of McKercher Corporation.
Improved package/project streamlining through the adoption of agentic handling systems.
These achievements highlight the importance of aligned partnerships and a shared commitment to advancing renewable solutions that are effective, compliant, and sustainable. PSW Energy’s ongoing success reflects McKercher Corporation’s broader strategic goal of leading with integrity, reliability, and innovation in Australia’s renewable energy market. For further insights, see: PSW Energy Strengthens McKercher Corporation’s Renewable Portfolio with Q3 Results
Achievement Unlocked: Sigenergy Silver Certification
Congratulations to the PSW Energy and Perth Solar Warehouse team for achieving Sigenergy Silver Certified Installer status. This certification recognises exceptional proficiency in deploying Sigenergy’s advanced energy storage technologies and maintaining manufacturer-aligned best practices. What this means:
PSW Energy, Perth Solar Warehouse is officially recognised by Sigenergy as a trusted and technically competent partner.
This status enables the business to provide improved product support, system optimisation, and increased client confidence.
It reflects McKercher Corporation’s broader commitment to professional excellence and continuous improvement in renewable technology deployment.
This certification is not only an important operational achievement, but also a reflection of our commitment to quality, compliance, and innovation. Every team member should feel proud to be part of a company that continues to set benchmarks in the Australian renewable energy industry. Further learning: Perth Solar Warehouse attains Sigenergy silver certified installer status
Closing Message
Our progress is a collective effort. Each compliance update recognised, every partnership strengthened, and each certification obtained signifies a shared step toward a cleaner, safer, and more resilient energy future.
If you have any questions or need further clarification regarding these updates, please contact your department lead or the compliance team.
McKercher Corporation — Powering Progress, Sustaining Tomorrow.
