This part of IEC 62933 specifies safety considerations (e.g. hazards identification, risk assessment, risk mitigation) applicable to EES systems integrated with the electrical grid. This provides criteria to enable the safe application and use of electrical energy storage systems of any type or size intended for grid-integrated applications. This standard can be applied to all EESS technologies, but for requirements specific to electrochemical EES systems, additionally refer to IEC 62933-5-2.