Chapter 01 · Climate & transitionEnergy & Transition
Green hydrogen
Definition
Green hydrogen is hydrogen produced using renewable electricity, typically through electrolysis, with low associated operational greenhouse gas emissions.
References
This reference provides supporting context for how “Green hydrogen” is defined and used.
Overview
What it means in practice
Green hydrogen should be read as an energy-transition term. Its meaning depends on the technology, market, accounting boundary, contract structure and emissions method being used.
In practice, users should state the boundary, source, measurement basis and evidence. That keeps green hydrogen specific enough for review without turning it into a broader claim.
Why it matters
Green hydrogen matters because energy claims can affect emissions accounting, procurement, infrastructure choices and public communication. Clear wording helps distinguish physical energy use from certificates, contracts and market instruments.
Common misconception
A common error is to treat Green hydrogen as a complete emissions claim. The stronger approach is to state the production route, accounting boundary, instrument and evidence.
Review questions
What source, boundary or measurement method gives the term meaning? What evidence supports it? What limitation would change how a reader interprets the claim?
How it is used
Governments, companies, investors and technical teams use “Green hydrogen” in climate strategies, transition plans, emissions inventories, scenarios and investment decisions. In each case, the user should state the relevant methodology, emissions boundary, baseline, timeframe and underlying data; otherwise, the same term may be applied to materially different situations.
In this context, it refers to hydrogen produced using renewable electricity, typically through electrolysis, with low associated operational greenhouse gas emissions.