The existing terminology used to describe low-emission hydrogen varies among stakeholders and countries, which complicates trade and investment. An internationally agreed methodology for calculating the emissions intensity of hydrogen production could cut financing costs, bring greater visibility for investors, and enable greater economies of scale.

Rapidly scaling sustainable, diversified, and resilient clean energy supply chains is key to achieving net-zero targets on-time and at as low a cost as possible, according to the Energy Transition Commission's report.