ICC/SRCC Solar Thermal Standards

ICC-SRCC maintains and publishes the following ANSI-approved consensus standards with the International Code Council (ICC). They form the basis of the OG-100, OG-300 and OG-500 certification programs. Each standard is available for online viewing or purchasing.


ICC 903/SRCC 500, Solar Tanks (2024)
ICC 901/SRCC 100, Solar Thermal Collectors (2020)
ICC 900/SRCC 300, Solar Thermal Systems (2020)
ICC 902/PHTA 902/SRCC 400, Solar Pool & Spa Heating Systems (2020)


PREVIOUS EDITIONS: The following previous editions are also available: ICC 901/SRCC 100 (2015), ICC 900/SRCC 300 (2015), and ICC 902/APSP 902/SRCC 400 (2017).

STANDARD DEVELOPMENT: The ICC/SRCC standards are revised and updated on a regular basis in accordance with the requirements of the ICC Standards Development Procedures. The technical committee responsible for the standards is the Solar Thermal Standards Committee (IS-STSC). For additional information on the standard update process and to sign up for updates, please visit the IS-STSC Technical Committee webpage.