TS EN ISO 24078

TS EN ISO 24078 is a terminology standard that brings together the terms, definitions, symbols, and abbreviations used in fields related to hydrogen in energy systems. It is intended to support a common technical language across hydrogen-related applications in the energy sector, helping ensure that the same concepts are understood consistently in design, operation, documentation, and professional communication.

What a terminology standard does

Terminology standards do not prescribe how a technology is built or operated; they standardise how it is named and described. In a multidisciplinary area such as hydrogen systems, consistent terminology matters because production, transport, storage, conversion, and end use often involve different engineering disciplines and different professional communities. This document provides a shared vocabulary for hydrogen in energy systems, reducing ambiguity in technical specifications, reports, training materials, and internal or external communication.

Scope and boundaries

• The document covers terms, definitions, symbols, and abbreviations.
• It does not apply to biological methanation.
• It does not apply to reactors for hydrogen production from other sources.
• It does not apply to road, maritime, and aviation transport, or to aeronautics and space.
• It does not apply to carbon capture, storage and utilisation, or to services.

In general technical context, hydrogen is increasingly important as an energy carrier in low-carbon systems, industrial processes, and energy storage chains. The value of this standard lies not in defining equipment or performance limits, but in clarifying the language used around hydrogen technologies. Where the same term may be interpreted differently across sectors, controlled terminology and consistent definitions provide a foundation for technical precision.

As the TSE publication aligned with EN ISO 24078:2025, this standard serves as a reference for professionals who need a structured vocabulary for hydrogen in energy systems, especially in engineering documentation, laboratory communication, and sector-wide coordination.