Hydrogen blending debate reopens; Report raises hydrogen safety and emission concerns

The PSR report, Hydrogen Pipe Dreams: Why Burning Hydrogen in Buildings is Bad for Climate and Health, identified that the use of grey or blue hydrogen could exceed greenhouse gas  (GHG) emissions from methane or coal, due to “essentially no commercially available green (zero-emissions) hydrogen”.

Andee Krasner, MPH Lead Author and Programme Manager for Climate Health for Greater Boston PSR, said, “The vast majority of hydrogen in the US is produced using polluting fossil fuels like methane and coal. Piping hydrogen into homes would increase greenhouse gas emissions and health risks, while delaying the transition to homes that run on renewable electricity.”

Additionally, according to the PSR report, hydrogen used in gas pipelines can lead to larger leaks, further contributing to increases in GHG emissions. Earlier this year (2022), Tenaris reported its medium and large diameter pipeline had allowed 100% hydrogen to be transported at 200 bar.

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