BESS Factory Audit

Power Conversion System (PCS)


Factory Acceptance Testing (FAT) Monitoring

10+ Years

At the PV and BESS Factories in Asia

17.6+ GW

Zero Risk Solar® Projects

14,800+ 

Community

250+

PV & BESS Factories Audited

Send our expert engineers to any PCS manufacturing facility globally

Partner with Sinovoltaics to oversee your Factory Acceptance Testing (FAT). Our PCS engineers are trusted worldwide to monitor the testing of your crucial equipment. Sinovoltaics' monitoring service ensures performance transparency and project confidence by verifying that testing is performed accurately. As an unbiased ISO 17020 third party, our certified inspectors will physically verify the testing equipment, testing procedures, and data collection of your PCS. We provide the assurance that your PCS meets all specified requirements and functions reliably.




Testing standards for the Factory Acceptance Testing are agreed upon during contracting and may cover:

  • Visual Inspection
  • Electrical Testing
  • Performance Testing
  • On-grid mode tests:
    Current harmonic, power factor control, low voltage, anti-islanding protection
  • Performance tests for:
    Charge/discharge, active grid mode switching, power grid voltage distortion
  • Input & output characteristics tests for:
    Rectification charging efficiency, standby loss, voltage THD, no-load loss
  • Protection characteristics tests for:
    Overload, frequency adaptability, AC voltage adaptability, DC over/ under voltage
  • PV characteristics tests for:
    MPPT efficiency, PV conversion efficiency, anti-discharge protection
  • Safety Testing


If you have concerns about which standards and testing should be included under your purchase contract, please contact our Contracting Specialists. Factory Acceptance Testing is dictated by your purchase contract. Review and optimize your contract here.


Still, trying to understand which PCS manufacturer fits the robust quality and ethics standards your project requires? Start with a Pre-Production Factory Audit to gain an on-the-ground, real-time understanding of your manufacturer. 


Consult with our energy storage experts to understand more about our FAT supervision services. Do not hesitate to contact us.


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Quality Inspection expertise

  • Battery Cells
  • Battery Modules
  • Battery Racks
  • BESS Housing


  • BMS
  • Integrated Cabinet BESS
  • Integrated Containerized BESS

Over 300+ Solar PV & BESS Factories Audited

Since 2009, Sinovoltaics has audited over 300+ solar PV and battery energy storage factories across Asia-Pacific.

Our solar PV and battery energy storage component-specialized auditors are accredited with the International Register of Certificated Auditors (IRCA) and are proud to support you with a comprehensive and insightful assessment of prospective suppliers by using their extensive experience in the operations management of PV and BESS factories in Asia.

Headquartered in Hong Kong, and with offices in Shanghai, Switzerland, USA, and Vietnam and local quality inspection and audit teams in India, South Korea, Thailand, and Türkiye, we are strategically located close to all solar PV component and battery energy storage manufacturing bases and shipping ports in Asia and North America.

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