本文提出了一个比较建筑能效的稳定指标。这篇论文探讨了使用“比“给定能源规范”更好的节能百分比”来评估建筑物的能源性能的问题，“其固有效率可能会有很大差异。作为替代方案，本文推荐了一个新的量表——零能耗性能指数（zEPI），可用于以稳定、优雅的方式评估建筑物。zEPI分数为“0”表示净零能耗建筑，而分数为“100”表示截至2000年的平均能耗建筑。 给定建筑的得分与2000年基准的线性关系将更高或更低。最后，对zEPI的好处进行了检查，包括能源法规、建筑评级计划、激励计划和解决非监管能源负荷的好处。引文:ASHRAE Transactions，第117卷，第2部分，魁北克省蒙特利尔

This paper proposes a stable metric for comparing the energy efficiency of buildings. The paper examines the problem of using "percent savings better than "a given energy code" to appraise a building's energy performance. The baseline for this metric, "a given energy code," can vary greatly in its inherent efficiency. As an alternative, the paper recommends a new scale—the Zero Energy Performance Index (zEPI)—that can be used to evaluate buildings in a stable, elegant manner. A zEPI score of "0" would be a net zero energy building, while a score of "100" represents a building with average energy consumption as of the year 2000. The score for a given building will be higher or lower in linear relationship to the year 2000 benchmark. Finally, the benefits of zEPI are examined, including those for energy codes, building rating programs, incentive programs, and addressing non-regulated energy loads.