Services
About Us

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. 

Overview
UL Solutions Consumer Information

See how we put safety science to work to help create a safer, more secure and sustainable world for you.

Learn more
Resources

Explore our business intelligence-building digital tools and databases, search for help, review our business information, or share your concerns and questions.

Overview
UL Solutions Market Access Portal

Accelerate your planning process and learn the requirements needed to take your products to market worldwide.

Visit
myUL® Client Portal

A secure, online source for increased visibility into your UL Solutions project files, product information, documents, samples and services.

Go to myUL
Certification Database — UL Product iQ®

Access UL certification data on products, components and systems, identify alternatives and view guide information with Product iQ.

Visit
Industries
View All
  • Software and Products
  • Service

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.

Electrical wires
Contact us

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: 

Related services
Electrical engineer working in electrical cabinet
  • Service

Distributed Energy Resource Testing

Various insulation materials that are used in electrical systems.
  • Service

Electrical Insulation Systems Testing and Certification
A picture of a high-voltage electrical system.
  • Service

High-Voltage Electrical Insulation Systems Testing and Certification
Solar lighting with blue sky in the background
  • Service

Photovoltaic (PV) and Solar Lighting

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

Get in touch

Have questions, need specifics? Let's get this conversation started.

Related services