What are some of the basic equipment criteria?
All solar water heating systems must be rated by the Solar Rating and Certification Corporation (SRCC) and meet the OG-300 system standard. Systems that include OG-100 collectors, but are not certified under OG-300, are allowed but will need to be verified by submitting either a testing certification for a substantially similar system prepared by a publicly funded laboratory or by submitting an engineering report stamped by a registered professional engineer detailing annual energy savings. All systems should be installed so that the energy collection system is substantially unshaded and should have substantially unobstructed exposure to direct sunlight between the hours of 9:00 a.m. and 3:00 p.m. The system must be a “closed loop” system with the exception of active, open-loop systems that have a proven technology or design that limits scaling and internal corrosion of system piping. These systems should also include appropriate automatic methods for freeze protection and present stag
