Why was the OG-300 Puerto Rico Supplement created?

Puerto Rico and other islands in the vicinity, like the US Virgin Islands, has unique conditions that differ from those in the continental US and Canada.  They include: High solar radiation, relatively stable water mains temperature, and no freezing conditions. Significantly lower domestic water consumption per capita than the continental US, on average. High incidence […]

Continue reading


How can I find ENERGY STAR® certified solar water heaters?

There are several ways to find ENERGY STAR certified solar water heaters: EPA ENERGY STAR Certified Product List. This list is maintained by the U.S. EPA and contains information on ALL ENERGY STAR certified water heaters (gas, electric and solar). ICC-SRCC Listing Directory. Each manufacturer with solar water heaters certified to ENERGY STAR by ICC-SRCC […]

Continue reading


What are the marking requirements for the OG-300 program?

ICC-SRCC has a specific mark used to convey OG-300 certification (specific usage is established in the ICC-SRCC Trademark, Certification Mark and Certificate Use Policy found in the Policy Section of the SRCC website. ICC-SRCC will also issue a separate certification document that will be available for viewing on the ICC-SRCC website. It provides the specific […]

Continue reading