The ENERGY STAR score provides a fair assessment of the energy performance of a property relative to its peers, taking into account the climate, weather, and business activities at the property. In the United States, data centers are able to earn the ENERGY STAR score using an energy intensity metric that takes into consideration the IT Energy used by the data center (see the Technical Reference for the ENERGY STAR Score for Data Centers for more details). For data centers within a larger property, it can sometimes be difficult for property managers to obtain IT Energy. For this reason, the ENERGY STAR score can also be computed using estimates to adjust for the presence of data centers. In Canada, data centers are not eligible to earn the ENERGY STAR score, but estimates can be used for data centers located within larger properties. The goal of the ENERGY STAR score, when the data center estimates are used, is to rate the energy performance of the primary use of the building, not the data center.
The ENERGY STAR score for indoor ice rinks in Canada applies to public or private buildings that include one or more ice sheets used for recreational or professional skating, hockey or ringette. The objective of the ENERGY STAR score is to provide a fair assessment of the energy performance of a property, relative to its peers, taking into account the climate, weather, and business activities at the property. A statistical analysis of the peer building population is performed to identify the aspects of building activity that are significant drivers of energy use and then to normalize for those factors. The result of this analysis is an equation that predicts the energy use of a property, based on its experienced business activities. The energy use prediction for a building is compared to its actual energy use to yield a 1 to 100 percentile ranking of performance, relative to the national population.