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As a global safety science leader, UL Solutions helps companies to demonstrate safety, enhance sustainability, strengthen security, deliver quality, manage risk and achieve regulatory compliance. 

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Solar Balance of System Certification

UL Solutions provides balance of system (BOS) equipment certification for fuses, holders, combiner boxes and end products such as meters.

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The meaning of balance of system (BOS) testing and certification

Example of cable managementBalance of system (also referred to as the BOS) refers to all the components of a photovoltaic system except for the photovoltaic panels.

Testing to all applicable balance of system (BOS) standards

UL Solutions’ balance of system (BOS) equipment certification helps you evaluate fuses, holders, combiner boxes and end products such as meters. We test and, if applicable, certify BOS to: 

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Distributed Energy Resource Testing

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Electrical Insulation Systems Testing and Certification
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High-Voltage Electrical Insulation Systems Testing and Certification
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Photovoltaic (PV) and Solar Lighting

Learn about our photovoltaic (PV) lighting services and capabilities for residential applications, commercial and public spaces, and remote locations.
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