11/2026

PtX GHG Intensity Calculators

Green hydrogen and Power-to-X products are entering international markets, but there is no single method for calculating their greenhouse gas footprint, as different methodologies are used. These methodologies are often tied to regulatory frameworks. An overview of the different frameworks and their applicability to PtX products, as well as a description of how the most relevant methodologies function, is presented in this report.

Moving from theory to practice, we developed three Excel-based GHG calculation tools for various PtX products based on key methodologies. These tools can be used by project developers and other interested parties to provide a solid basis for their own PtX GHG calculations, or to gain a better understanding of how the methodologies work. The tools cover the following products and methodologies:

Hydrogen: EU RFNBO, EU CBAM, India GHCI and South Korea
Ammonia: EU RFNBO, EU CBAM, IMO LCA Guidelines
e-Fuels: EU RFNBO, IMO, CORSIA

You'll find a blank version of each of the three tools and a version with placeholder data to demonstrate how they function.

Disclaimer: These tools are provided for estimation and planning purposes. Official certification requires verification by accredited bodies per each methodology's rules. The tool developers accept no liability for the results itself or certification outcomes. Users must verify all inputs and factors and potentially check for any updates of methodologies not yet covered by this tool. Furthermore, the tool reflects the regulatory framework as of the release date on November 3, 2026. As such, any changes after the release date are not reflected by the tool. Users should always check for the latest version of tools available from this website.