The Ledger
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Koch-Blank: Historical IPCC tables underestimated the climate impact of hydrogen leakage
“There has, I mean, if you go back in the tables that have been developed by the IPCC process and used in all the national inventories for hydrogen leakage, the number has been significantly lower than some of the recent research suggests.”
Koch-Blank: Hydrogen leaks indirectly cause warming by extending methane lifetime and creating water vapor
“Basically what happens is that the hydrogen that leaks has itself a global warming potential, which has been considered, but then also it has an effect of extending the lifetime of methane in the atmosphere basically causing the methane to stick around longer,…”
Koch-Blank: Massive hydrogen adoption rates across the economy are unlikely
“Very large adoption rates for hydrogen in the economy, for example, which I think many of us who work with hydrogen a lot would consider to be a big number, which is unlikely as an outcome”
Koch-Blank: Recent research doubles hydrogen's 100-year global warming potential to 10
“The global warming potential, which has been traditionally considered, has been, I think, five. Kilograms of CO₂ equivalent per kilogram of hydrogen leaked, and the recent research indicates that it's, should rather be 10.”
Koch-Blank: Methane leakage has 5x the 20-year warming impact of hydrogen per megajoule
“For natural gas, it goes from 25 to 80, roughly, from a, when you compare a hundred to 25. And for hydrogen, it goes from 10 to 40, so it increases substantially, but it's still half of the global warming impact, global warming potential of Natural gas per kil…”
Koch-Blank: Safety risks will force hydrogen infrastructure to leak less than methane
“The safety aspects of leaking hydrogen, because the properties of leaking hydrogen is much more dangerous than leaking, Methane. Partly because it's harder to detect. So, So that's one reason why systems are likely to be tighter.”
Koch-Blank: Hydrogen for steelmaking yields double the emissions reduction of transport
“Using the hydrogen molecule for reducing iron ore Has twice as much you know, impact on the alternative, compared to the alternative If you benchmark with using it for transportation applications, and I bucket here shipping, aviation, and trucking.”
Koch-Blank: Moving energy via pipeline molecules is cheaper than electrons
“Pipeline, moving molecules in a pipeline is really cheap. That's what we see in other markets. You know, there is a reason we're moving molecules to the regional power markets and then not moving electrons over copper between Europe and North America, for exam…”
Koch-Blank: Operating hydrogen pipelines do not publicly disclose leakage rates
“There's a lack of statistics, I think, from the existing hydrogen supply chains. There are several pipelines in operation, for example, and they're not publicly disclosing their leakage rates or how they detect or measure, and that I think is a, you know, it's…”