“To build a global hydrogen economy and facilitate hydrogen trade, low carbon hydrogen standards must be technology and feedstock neutral. They should focus on carbon intensity, with limits based on the best available technology and with a globally aligned methodology for emission accounting.”
Hydrogen has a key role in enabling the decarbonisation of hard to abate sectors in the net zero transition. That’s why governments are driving and managing hydrogen investment by putting in place their own hydrogen standards. These standards dictate which projects are truly ‘low carbon’ and should therefore receive government support.
Most hydrogen regulatory standards are independent of feedstock (starting material) or technology. Instead, they are focussed on the carbon intensity of the hydrogen produced. While this is a step in the right direction, there is still more to do, especially around consistent calculation of emissions in the wider value chain.
To build a global hydrogen economy, which can effectively facilitate local and international hydrogen trade, these standards must be globally aligned.
The UK was one of the first countries to publish a hydrogen standard with clear methodology in the spring of 2022. The UK Low Carbon Hydrogen Standard is independent of feedstock but with the lowest carbon intensity limit of similar regulatory standards under development. Under this leading standard, both renewable hydrogen projects and those producing hydrogen from natural gas with carbon capture (CCS-enabled hydrogen) are eligible for support. For example, bp’s HyGreen Teesside and H2Teesside projects.
Analysis from the Boston Consulting Group shows that the Production Tax Credit will reduce the cost of renewable hydrogen production by around 80% and CCS-enabled hydrogen by around 40%. This shifts the US to the lowest-cost country for hydrogen exports. And under the Inflation Reduction Act, hydrogen projects will likely be eligible for additional credits depending on the project scope, for example, renewable energy production.
Did you know?
Johnson Matthey (JM) develops and manufactures catalyst coated membranes (CCMs) – the performance-defining components at the heart of renewable hydrogen electrolysers. As the only commercial scale CCM supplier with in-house catalyst and membrane technologies, we can leverage both layers, optimising our components to meet customers targets on performance, durability and cost.
Some specifics of the Inflation Reduction Act are still under development and project developers will need these clarified to decide which credits to apply for. One area requiring clarification is the calculation of the carbon intensity of the hydrogen, and whether emissions upstream and downstream in the hydrogen value chain will be included.
Most hydrogen standards, such as the UK, Japanese and Korean legislation, cover “well to production gate emissions”, from extraction of feedstock to the production of hydrogen. For renewable hydrogen, this includes the carbon emissions associated with upstream electricity generation.
For CCS-enabled hydrogen, this includes any methane emissions in upstream natural gas procurement, as well as carbon dioxide emissions produced in the hydrogen production process that are not captured. As a result, hydrogen standards are helping to drive world-class technology development in both these fields and demonstrate that CCS-enabled hydrogen production still meets stringent standards for carbon intensity.
Did you know?
JM’s LCH™ technology for CCS-enabled hydrogen and ammonia offers autothermal reforming (ATR) and ATR coupled with gas-heated reforming (GHR-ATR). These flowsheets enable carbon capture rates of up to 99%. Our GHR-ATR flowsheet offers the highest process efficiency commercially available today, minimising natural gas use. Together these benefits result in a low carbon intensity that meets even the UK’s stringent low carbon hydrogen standard.
Other hydrogen standards, like the EU’s Renewable Energy Directive II, go a step further to include emissions associated with hydrogen’s transport and use. This adds complexity as many commercial scale hydrogen projects, supply to a wide variety of end-uses using different transport mechanisms. For example hydrogen produced in Equinor’s H2H Saltend project will be used to decarbonise steel production and replace natural gas in powering chemicals production.
This inconsistency presents an obstacle for developers trying to build a global hydrogen network, whose projects are eligible for support in some regions but not others.
The drive for international consistency
It’s clear that we need to work across borders to develop a consistent hydrogen standard based on the best available technology to better facilitate interoperability. This is becoming increasingly important as new hydrogen strategies and regulations continue to be developed and implemented globally, and we begin to understand the picture of future hydrogen trade.
The objective is to enable the hydrogen economy to grow at pace and facilitate global hydrogen trade. As such, this ISO standard should be feedstock and technology neutral, centre around carbon intensity limits and follow the consistent emissions accounting methodology proposed by the IPHE.