March 3, 2011
The Solar America Board for Codes and Standards (Solar ABCs) held a free Webinar presentation and a discussion on a proposed Solar ABCs policy for PV Module Power Rating Requirements. The Webinar discussed the background, the need for a policy, the policy itself, and defined the primary potential users of the policy.
One of the primary goals of this policy is to provide information for consumers to make informed decisions. Without requiring a power rating tolerance policy, photovoltaic modules will continue to enter the domestic marketplace that may have a significantly lower power output than the module’s rating indicates. This results in reduced performance of installed PV systems that will not meet consumers’ expectations. If over-rating of modules continues to be an acceptable practice, the overall acceptance by the general population will be diminished and the overall movement towards solar energy jeopardized. In addition, without power rating data at various low/high irradiance and temperature conditions, the energy collection predictions for installed PV modules and systems will not be accurate.