These are the specific data-items collected by the HI / EA needed to perform the SAP calculation. The Previous Asset-Rating (if there is one) The name of the Renewable Energy Source. This is a string rather than an enumerated list because the potential sources are unlimited The amount of energy generated from this renewable source Total Usable Floor Area The total sum of the Floor-Area for all the recorded Usable Floor Areas The Benchmarks are supposed to be populated in order so Benchmark-3 should only be populated is both Benchmark-1 and Benchmark-2 are populated.