| Summary: | This paper presents an economic policy framework designed to harmonize hydrogen colour codes
for the nascent global hydrogen sector, since the current colour code systems suffer from
inconsistencies, causing confusion and misinterpretation among industry stakeholders and
consumers. This study seeks to contribute to the development of a transparent and well-informed
hydrogen market, empowering businesses enhance competitiveness, and foster long-term
sustainability through a standardized approach to labelling hydrogen based on its carbon dioxide
emissions across different production pathways, i.e., hydrogen production technologies. The
proposed policy framework, based on reliable qualitative data, aims to enhance the scientific
underpinning in assigning colours, ensuring that hydrogen colour codes accurately reflect their
environmental impact. By offering a clear and consistent classification, the proposed harmonized
colour code system facilitates market access for businesses, it enables strategic decision-making,
effective market positioning, and fosters consumer trust. It also supports businesses in differentiating
their products based on environmental credentials.
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