Abstract

Hydrogen, like all other gaseous energy carriers, lacks a unique fingerprint that would allow for easy identification of its origin, sustainability attributes, or production method. Although terms such as ‘green’, ‘sustainable’, ‘low-carbon’, ‘renewable’ and ‘clean’ are commonly used to describe hydrogen production technologies, they are not reliable as references in regulations for tracking sustainability attributes. Consequently, there is a need for tracking tools. Certification plays a crucial role in determining whether hydrogen meets certain standards or regulatory ...