Electrical energy storage (EES) systems - Part 3-1: Planning and performance assessment of electrical energy storage systems - General specification

IEC 62933-3-1:2025 is applicable to EES systems designed for grid-connected indoor or outdoor installation and operation. This document considers:

necessary functions and capabilities of EES systems; sizing and design of EES system; operation of EES system; test items and performance assessment methods for EES systems; requirements for monitoring and acquisition of EES system operating parameters; exchange of system information and control capabilities required; maintenance of EES system. Stakeholders of this document comprise personnel involved with EES systems, which include:

- planners of electric power systems and EES systems;

- owners of EES systems;

- operators of electric power systems and EES systems;

- constructors;

- suppliers of EES systems and its equipment;

- aggregators.

Use-case-specific technical documentation, including planning and installation specific tasks such as system design, monitoring, measurement, tests, operation and maintenance, are very important and can be found throughout this document.