IPCC report: Hydrogen is a tool for climate protection

"We are at a crossroads. The choices we make now can secure a livable future. We have the tools and the knowledge to limit global warming."

Hoesung Lee, Chairman IPCC (Intergovernmental Panel on Climate Change)

Not 1.5 degrees Celsius, not 2 degrees Celsius - the previous ambitions to limit global warming are leading us to a world with 3.2 degrees Celsius as the increase in the global mean temperature in 2100. This is the dramatic result of the just published third part of the sixth IPCC report. In this part, researchers from all over the world deal in particular with means of limiting global warming and its dramatic consequences.

The report mentions climate-friendly hydrogen as one of the central tools in Chapter 1. Hydrogen in industrial processes in steel production is treated as an example of possible measures. At the same time, the provision of a hydrogen infrastructure is seen as a challenge, for which a transitional technology openness for the ramp-up of the hydrogen economy is recommended.[1]

The costs of decarbonisation depend on the policy, design and implementation of the transition to a zero-emission future. In particular, the availability of technologies plays a decisive role in the speed and cost-effectiveness. Scientific advances in biofuels, synthetic fuels, but also hydrogen lead to an economic improvement of "net zero energy systems".[2]. Integrated total system approaches lower the costs of such a transition.

In order to achieve this necessary system flexibility, sector coupling plays a decisive role, which can apply advanced technologies in a targeted manner in an overall system, according to the report. At the same time, hydrogen production processes and hydrogen storage could increase the resilience of energy systems. With a whole-system perspective, integrated planning could support both short-term operation and long-term investment decisions. The report shows that the corresponding infrastructure could then be covered from the local to the national and international level, while meeting security of supply requirements.[3]

The Intergovernmental Panel on Climate Change has the task of constantly revising the scientific findings on climate change. Reports have been published since 1990, and numerous researchers are working on them.[4] The Sixth Assessment Report consists of four parts. The first volume was published in August 2021, the second in February 2022 and the third on climate protection in April 2022. The fourth volume is expected to be published as a synthesis report in September 2022.

The entire report can be read here:


[1] (page 231 in Adobe View, page 1-25 of Chapter 1 in the full report).

[2] (page 948 in Adobe View, page 6-5 of Chapter 6 of the full report).

[3], page 992 in Adobe View, page 6-49 in Chapter 6 of the full report.


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