The world is seeking green and sustainable solutions and Hydrogen could play a key role in decarbonizing sectors such as heavy industry and transport. Despite its potential, Hydrogen’s traction is currently limited and a major obstacle is that the current terminology used to describe low-emission hydrogen differs among stakeholders and nations, complicating trade and investment.
At the close of 2022, a total of 28 countries had a hydrogen strategy in place, around one-third of which had been conceived in the previous two years. Some nations plan on importing large volumes of hydrogen, whereas others want to be future exporters in the incipient hydrogen market.
To accelerate demand for low-emission hydrogen, the International Energy Agency (IEA) in collaboration with the International Partnership for Hydrogen and Fuel Cells in the Economy (IPHE) released a report for the G7 Climate, Energy and Environmental Ministerial meeting in April 2023, called ‘Towards hydrogen definitions based on their emissions intensity.’
Currently, several varying terminologies are used to categorize hydrogen and there are no agreed definitions for these terms. Moreover, they can obscure many different levels of potential emissions. The IPHE has developed a standard methodology for calculating the greenhouse gases (GHG) emissions intensity of various hydrogen production routes, which means numerical values can be calculated directly for a specific production route. In addition, the use of a common methodology to calculate emissions intensities enables a level of interoperability of various regulations, providing clarity on how various products comply with mandates for different countries.
The IPHE methodology will serve as the basis for the first international standard to calculate the GHG emissions of hydrogen supply, which is currently being developed by the International Organization for Standardization (ISO) and is likely to be published by the close of 2024.
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