本文件描述了在ISO/IEC 30134系列中其他标准的数据中心边界内存储和输出电能的情况下，数据中心指标的处理。 本文件将过剩电能系数（XEEF）指定为关键绩效指标（KPI），以量化从数据中心向公用事业公司提供的电能。 本文件的结构与ISO/IEC 30134系列标准相同。

This document describes the treatment of data centre metrics in circumstances where electrical energy is stored and exported from within the data centre boundaries of other standards in the ISO/IEC 30134 series. This document specifies the Excess Electrical Energy Factor (XEEF) as a Key Performance Indicator (KPI) to quantify the electrical energy provided back from data centre to the utility. This document has the structure common to the standards of the ISO/IEC 30134 series.