OHI Logo

Open Hydrogen Initiative Advancing transparency and credibility to hydrogen markets

GTI Energy white logo
Spg Comm Insight Logo Vert Rev Rgb
National Energy Technology Laboratory white logo

Hydrogen is a potential energy game changer, but high variability in its carbon intensity makes it difficult for governments, industry, and investors to discover and accurately compare low-carbon hydrogen solutions.

That’s where the Open Hydrogen Initiative (OHI) comes in. This open-sourced and standardized accounting methodology for hydrogen emissions was built at the project level to harmonize the market when it comes to climate solutions and support global trade in low-carbon hydrogen as a valuable commodity in the energy transition.

icon - advance transparency

Advance transparency

icon - contextualize climate investments

Contextualize climate investments

icon - help harmonize markets

Help harmonize markets

icon - support the development of a globally traded hydrogen market

Support the development of a globally traded hydrogen market

A WORLD-CLASS HYDROGEN MEASUREMENT TOOLKIT

A suite of analytical methodologies and protocols spanning major hydrogen production routes including all commercial solid, gas, and power conversation technologies and all the associated energy feedstocks.

An open-source modeling toolkit based on the suite of methodologies and protocols, allowing users to assess the carbon intensity of their operations in a precise and practical format. The modeling platform employs Data Quality Management (DQM) methodology to assess confidence and quality of final model results as a function of the quality of inputs.

Demonstration projects from stakeholders on the characterization of hydrogen production processes provide a better understanding of energy and material flows and major emissions hotspots. Identifying real-world applicability and credible carbon intensity values for a range of production methods ensure a sustainable growth trajectory of hydrogen in the marketplace.

OHI Stakeholder Commentary

OHI Partner Logos 1 26

Have questions about joining the Open Hydrogen Initiative?

About OHI

The hydrogen rainbow is a useless metric. Here’s why:

Hydrogen’s carbon intensity is often associated with a color representing the method by which hydrogen is produced. However, hydrogen molecules of the same color category can still have highly variable carbon footprints, as the “color wheel” does not consider all the factors that can affect the emissions profile from one hydrogen production facility to another. With hydrogen applications becoming a part of many government and organization decarbonization strategies, precise and consistent tools to measure hydrogen’s carbon intensity at the facility level are a foundational requirement for credibility.

GTI Energy and S&P Global Commodity Insights, with technical contribution from the National Energy Technology Laboratory, developed the Open Hydrogen Initiative to answer this market need. Through the initiative, a broad range of stakeholders are collaborating to develop open-source protocols that will unlock hydrogen’s potential to decarbonize energy-intensive sectors.

To learn more about opportunities to participate, please contact us today.

While the U.S. Department of Energy’s National Energy Technology Laboratory (NETL) provided technical guidance on OHI, the lab’s technical input is by no means an endorsement by the U.S. Federal Government in OHI’s methodology.

OHI News

Hydrogen has the potential to play an important role in decarbonizing energy-intensive sectors, but credible and open-source protocols are needed to vet the environmental credibility of a specific production pathway, given the variability even among the same technologies. Learn how OHI is redefining how the world measures and benchmarks the carbon intensity of hydrogen production at the asset level.

Why OHI?

Global scope icon

Global
in scope

OHI operates with global member participation, and its carbon accounting framework is applicable to facilities in all regions of the world. OHI looks beyond national needs and aims to harmonize the global clean hydrogen marketplace.

Inclusive icon

Inclusive of industry participation

OHI welcomes the substantive and collaborative contribution of the energy community. At each stage of development, the OHI team works in unison with key stakeholders including academia, eNGOs, and governments to vet, refine, and improve its work.

Facility Specific Carbon Accounting

Facility-specific carbon accounting

OHI methodology is tailor-made to vet the carbon intensity of hydrogen produced from a specific facility. This approach makes OHI distinct from popular lifecycle assessment tools in circulation today that conduct general carbon accounting for a class of technology, rather than a facility, at the regional or national level.

Source code icon

Open-sourced and therefore replicable

OHI deliverables are open-source to ensure credibility and transparency.

FAQ

Why is a carbon intensity tool for hydrogen important?

A tool that focuses on accurately measuring the carbon intensity of hydrogen production across a wide range of primary production pathways can provide market participants with a clear understanding of the decarbonization potential – and value – of a given kilogram of hydrogen. By focusing on carbon intensity at the project level, comparisons can move away from color labels towards a more universal understanding of the environmental benefits and value of hydrogen as a decarbonization fuel.

Such a tool can play an important role in assessing the value of hydrogen investments aimed at delivering decarbonization targets, as well as providing more robust data sets for hydrogen consumers, producers and traders who need to make informed choices about their options.

What is different about the OHI project?

The OHI tool generates carbon intensity measurements at the project level, moving beyond technology or industry averages. This level of detail provides market participants and regulators with the requisite degree of granularity to make informed decisions and comparisons across decarbonization investment options.

The OHI framework is global in scope, incorporating data from more than 270 countries and sub-country regions to ensure that regional energy systems, feedstocks, and policies are accurately reflected in results.

Additionally, all outputs from the OHI project are available to use on an open-source basis, to any interested party, including producers, investors, consumers, or regulators.

The OHI tool provides a measure of confidence for the carbon intensity generated, which is based on the range and quality of data used.

The organizing structure of OHI is open to a wide array of interested parties and involves working groups comprised of industry and technical experts. All outputs from the project are peer-reviewed by internal stakeholders and the public to ensure that the tools are objective, credible, and transparent, leading to a better understanding of the carbon intensity of hydrogen production.

The creation and adoption of these technical protocols helps to harmonize the market, contextualize climate solutions, advance transparency, and support the development of a globally traded hydrogen market.

How does the “color-wheel” approach potentially diminish the credibility and value of hydrogen in decarbonization strategies?

The “color-wheel” approach attempts to classify hydrogen based on the type of energy used to produce it but does not precisely or fully convey the carbon emissions in upstream processes. As the world transitions to a low-carbon future, it is critical that both public and private sector decision-makers have a more consistent, transparent, and comprehensive approach to measuring hydrogen’s carbon intensity.

OHI will look beyond “color-wheel” labels and embrace a more pragmatic and transparent measurement system that accounts for energy consumption and feedstock source, among other factors. This will ensure that the role and potential of hydrogen in decarbonization strategies is not overlooked based solely on the production of one particular molecule. The tool will also produce a “confidence score,” that defines the reliability of the score based on the quality of the data inputs into the tool.

Can this tool be used to assess hydrogen-related emissions across the entire value chain?

In version 2.0, this tool assesses emissions downstream of hydrogen production by including transportation to its point of use and production of various downstream hydrogen derivatives like ammonia.

How does OHI advance the development of a globally traded hydrogen market?

The commonly used “color wheel” of hydrogen production pathways inadvertently fragments the hydrogen market, which diminishes the value of investments already made in certain hydrogen pathways and disincentives future hydrogen pathways. OHI’s measurement tools protect transparency and credibility of the investments that underpin the hydrogen market.

How can investors use OHI data?

By developing objective, credible, peer-reviewed, transparent, and open-sourced tools for measuring the carbon intensity of hydrogen at the production level, OHI helps to close the data gap that currently undermines the commoditization of hydrogen. Put simply, OHI outputs can inform trade, project financing, and investments. OHI’s measurement tools help market participants maximize their current or potential investments by providing more accurate evaluations against decarbonization targets.

Can policymakers use OHI data to gauge the emissions profile of projects, helping to inform funding authorizations or project awards?

Yes. The OHI framework provides consistent, transparent, and independently reviewed data that policymakers can use to evaluate and compare the carbon intensity of hydrogen projects on a level playing field. While OHI was not designed as a regulatory tool, its open-source data and methods can serve as a trusted reference to inform funding decisions, certification systems, and market design efforts. Policymakers, verifiers, and hydrogen marketplaces can confidently draw on OHI outputs to anchor their work in credible, comparable data.

Is the U.S. government backing or helping OHI?

The U.S. Department of Energy’s National Energy Technology Laboratory (NETL) provides technical input and guidance to OHI. Their participation reflects collaboration on scientific rigor, not an official endorsement of OHI’s methodology or outputs. We’re grateful for NETL’s expertise and engagement, but OHI remains an independent, non-governmental initiative.

How do current events impact the role of OHI?

The Inflation Reduction Act’s hydrogen production tax credits—paired with expanded incentives for CO₂ capture, use, and storage—have accelerated the need for clear, credible carbon accounting. With up to $3 per kilogram at stake, companies must rapidly demonstrate the carbon intensity of hydrogen production at the facility level to qualify for incentives and compete in emerging markets.

OHI helps the industry move quickly and decisively by providing a standardized, easy-to-use, and industry-vetted toolkit for measuring and comparing emissions. Built to be globally applicable and fit-for-purpose for market access, OHI enables transparent, high-fidelity carbon accounting so stakeholders can act with confidence in a fast-moving policy and investment landscape.

How can I get involved in the OHI project?

OHI convenes stakeholders from all sectors of the hydrogen market to develop a measurement model that will enhance the transparency around the carbon intensity of hydrogen production. To lend your expertise or learn more about this initiative, contact OHI@gti.energy.

Contact Us

To learn more about opportunities to participate in the Open Hydrogen Initiative (OHI) or other questions about the initiative please submit a contact form.