The efficacy of light fixtures (i.e. luminaires) is based on lumens per watt of input power. The efficacy value that appears on the list of ENERGY STAR certified products for each model is the reported light output divided by the reported input power. Per Directive 2011-05, “Measured versus Reported Values for ENERGY STAR Certification, all values, those that are derived exactly from measurement as well as reported values, those that reflect conservative rounded figures and their quotients, must all meet the applicable ENERGY STAR requirements.
This means that in addition to ensuring that the measured efficacy values meet the ENERGY STAR requirements, CBs also need to ensure that reported lumens and reported input power results in a calculated efficacy that also meets the ENERGY STAR requirements.