GTI, the National Energy Technology Laboratory and S&P Global Platts today launched the Open Hydrogen Initiative, a new collaboration to further transparency into the environmental impact of hydrogen production and help unlock its full potential as an important driver of energy transitions. The mission of OHI is to create objective, credible, peer-reviewed, transparent and open-sourced tools that allow participants from across the hydrogen value chain to assess the carbon intensity of hydrogen at the asset level. The creation and adoption of these technical protocols will help build and harmonize the hydrogen market, contextualize climate solutions, advance transparency and support global trade in low-carbon hydrogen.There is a high degree of variability in the carbon intensity of hydrogen production, even using the same technologies or pathways. Precise measurements of hydrogen's carbon intensity at the production facility (also known as the asset level) are needed to more accurately reflect the environmental bona fides of a given kilogram of hydrogen produced and overcome the limitations of the "color-wheel" labeling model. An apples-to-apples comparison of hydrogen production carbon intensity would hold benefits for stakeholders throughout the value chain—producers, users, engineers, academia, market participants, investors and policymakers. Failure to consider or appropriately convey the carbon variability across and within the production pathways only acts to cloud decision-making and risks a slower, more costly transition to a low-carbon energy future.OHI's measurement tools can play an important role in informing market participants, technology innovators, policymakers and others tasked with evaluating and delivering against decarbonization targets. The initiative will draw inspiration from Stanford's OPGEE Model, which has become the industry standard adopted to effectively measure the carbon intensity of oil.