This document describes environmental issues associated with electrical energy storage systems (EES systems), and presents guidelines to address the environmental impacts to and from EES systems including the impacts to human due to chronic exposure. This document considers the issues in both normal and abnormal operating conditions. This document applies to all EES system regardless of the type of electrical energy storage technologies. It is not the aim of this document to describe environmental issues associated with components and products used in EES systems that are already described in other IEC/ISO standards