Draft Details

1.1 Inclusions

This Standard specifies labeling requirements to disclose quantitative and qualitative information on well-to-gate carbon intensity (CI), including production pathway and the main supply chain attributes.

This Standard provides a harmonized disclosure approach based on data obtained using existing methodologies and lifecycle assessment (LCA) tools that are largely used to determine and report greenhouse gas (GHG) emissions associated with hydrogen production to estimate the hydrogen CI.

This Standard applies to the production of gaseous hydrogen. Liquefaction of hydrogen is considered part of conditioning and distribution of hydrogen and is out of scope.

This Standard provides a disclosure framework that applies to site-specific production units. It is applicable to different inventories such as actual hydrogen production batches from a given production site, average hydrogen production over a one-year or more period from a given production site, anticipated average hydrogen production from a planned production facility.

This Standard has been designed for hydrogen with a purity of 98% or greater to be applicable to all ISO 14687 hydrogen fuel qualities.

1.2 Exclusions

This Standard does not cover CI thresholds or limits used to define different categories of hydrogen.

This Standard does not provide an LCA method or model for assessing GHG emissions. Protocols and standards exist for this purpose and are referenced in this Standard.

This Standard does not cover information related to the additional carbon emission resulting from conditioning and transporting hydrogen from the producer to the end-user.

This Standard does not apply to hydrogen obtained by mixing hydrogen produced either in multiple sites or via multiple production pathways.

This Standard is not designed to apply to syngas or blends of hydrogen and other fuels.

1.3 Conflicts

In case of conflict between this Standard and federal, provincial, state, or local regulations, governmental regulations shall take precedence.

1.4 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the end-user is obliged to satisfy in order to comply with this Standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the Standard.

1.5 Use of SI units

The values given in International System of Units (SI) units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.