prSRPS EN 50778:2026

PERFORMANCE AND DURABILITY ASPECTS FOR STATIONARY STORAGE APPLICATIONS — Flow batteries

Scope

This document defines standardized procedures, test conditions, and calculation methods to evaluate the performance and durability of flow battery energy systems (FBES) used in stationary applications. It covers the measurement of key parameters such as rated capacity, energy round-trip efficiency, and power output, as well as the assessment of long-term reliability under representative operational conditions. The scope extends to both full-scale flow battery systems and, if needed, representative test objects that accurately replicate relevant performance characteristics. By specifying requirements for measuring instruments, data recording, and system preconditioning, this document enables consistent and comparable test results across different flow battery technologies.

Related directives

NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.