Solar Thermal Collectors

NOTICE: Effective July 1, 2021, the ICC-SRCC OG-100 certification program will formally adopt the 2020 edition of the ICC 901/SRCC 100 standard. After that date, all new OG-100 applications will be required to comply with ICC 901/SRCC 100-2020. Until that date, applicants may choose to use the 2015 or the 2020 version of the standard. Contact us for more information.

The ICC-SRCC OG-100 Solar Thermal Collector Certification Program addresses solar thermal collectors based on the current ICC 901/SRCC 100 Solar Thermal Collector standard. The standard sets minimum safety, durability and performance requirements for many types of solar thermal collectors used for fluids like water, glycol and air. Compliance with the ICC 901/SRCC 100 standard is required in most building codes in use throughout North America including the IBC, IRC, IMC and IPC model codes.

The ICC 901/SRCC 100 standard also requires performance testing and references the internationally-accepted test methods in the ISO 9806 standard.OG-100 certifications provide standardized performance ratings to make it easy to compare collectors on an equal basis. Incentive programs, codes and regulations throughout North America recognize OG-100 certification. Many manufacturers use OG-100 certification to meet the requirements of state, local, utility and Federal incentives (like the Investment Tax Credit (ITC))


ICC-SRCC OG-100 is the most widely recognized certification program for solar thermal collectors in North America, ensuring that certified products can be sold, incentivized and installed virtually anywhere in the region. Check the DSIRE website for listings of solar water and pool heating programs that reference ICC-SRCC's OG-100 certification.
OG-100 addresses nearly all collector types, including glazed, unglazed, flat plate, evacuated tube, ICS, building-integrated, concentrating, transpired, PVT & photovoltaic water heating collectors.
SRCC has been offering solar thermal certifications for over 3 decades. We know your products and we know Standard 100 - because we created it.
Code officials, consumers, designers and architects rely on the information in OG-100 certificates, available publicly on the ICC-SRCC website. Check it out on our online listing directory.

To learn more about having your solar collector certified under the OG-100 certification program, click on any of the links provided, or  contact us.