Solar Thermal Collectors

The ICC-SRCC OG-100 Solar Thermal Collector Certification Program provides certification of compliance for solar thermal collectors to 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.

ICC 901/SRCC 100 also requires testing to quantify the performance of solar collectors and references the internationally-accepted test methods in the ISO 9806 standard. OG-100 certifications report the measured performance using standardized performance ratings to make it easy to compare collectors on an equal basis. Current OG-100 certificates can be found in our searchable online directory. While most share the same format and information, solar pool heating collectors are addressed in a specialized format for this unique application (click here for more information).

Incentive programs, codes and regulations throughout North America recognize OG-100 certification and performance ratings. OG-100 certification can be used to meet the requirements of many Federal, state, local, and utility and programs that provide rebates and incentives for solar water and air heating products.


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.