Solar Thermal Collectors

The ICC-SRCC™ OG-100 Solar Thermal Collector Certification Program provides certification of solar thermal collectors to the current ICC 901/SRCC 100 Solar Thermal Collector standard, which references the internationally-accepted test methods in the ISO 9806 standard. The ICC-SRCC™ program includes a wider range of collector types, including: glazed and unglazed flat plate, evacuated tube, integrated collector storage, roof-integrated, concentrating, transpired and even photovoltaic water heating collectors.

The OG-100 program ensures that these collectors meet minimum safety and durability criteria, and provide standardized performance ratings for different climates and applications. The ICC-SRCC™ OG-100 ratings allow the performance of collectors from various manufacturers to be compared on an equal basis. ICC-SRCC™ certificates provide the key information consumers and system designers need to compare, model and select the right collectors for their system. OG-100 certified collectors are required for all OG-300 certified systems.

Dozens of incentive programs and regulations nationwide recognize and require ICC-SRCC™ OG-100 certification. Check the DSIRE website for listings of solar water heating and solar pool heating programs that reference ICC-SRCC™'s OG-100 certification.

OG-100 Certified


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To learn more about participating in ICC-SRCC™'s OG-100 certification program, click on any of the links below, or contact us at

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