{"id":8421,"date":"2023-09-26T12:27:54","date_gmt":"2023-09-26T10:27:54","guid":{"rendered":"https:\/\/hch2.de\/?post_type=aktuelles&p=8421"},"modified":"2025-09-04T15:08:20","modified_gmt":"2025-09-04T13:08:20","slug":"the-colours-of-hydrogen-part-2-blue","status":"publish","type":"aktuelles","link":"https:\/\/hch2.de\/en\/news\/the-colours-of-hydrogen-part-2-blue\/","title":{"rendered":"The Colours of Hydrogen, Part 2: Blue"},"content":{"rendered":"\n
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There has been no change regarding which colour of hydrogen remains the ultimate target: the future is green. This will remain the case after the German federal government amended its National Hydrogen Strategy at the end of July. The revised strategy foresees the path to a green future having a few blue stops along the way. \u201cBlue hydrogen is suitable for a transition period, as it involves a relatively small amount of CO2<\/sub> emissions being released into the atmosphere and because it can help get the hydrogen economy off the ground more quickly,\u201d says Prof. Dr.-Ing. Andreas Peschel, one of the leading researchers at the Helmholtz hydrogen cluster (HC-H2). \u201cIn the long term, however, only green hydrogen makes sense.\u201d <\/strong><\/p>\n\n

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What is blue hydrogen?<\/h3>\n\n

Blue hydrogen is actually just grey hydrogen. Greenhouse gases such as CO2<\/sub> are released in the production of both types of hydrogen, for example when the energy required to divide water into its components \u2013 hydrogen and oxygen \u2013 comes from fossil fuels like coal, oil, or natural gas. The difference between blue and grey hydrogen is that with blue hydrogen, CO2<\/sub> is captured before it can be released into the atmosphere. This is a process known as carbon capture. In terms of greenhouse gas emissions, blue hydrogen therefore has advantages over grey hydrogen and can support the transition of the energy system towards a net-zero global economy. <\/p>\n\n

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“The CO2 released during the production of blue hydrogen is then typically stored under water. \u201cStorage facilities are often used that were previously used for natural gas or oil. This has the advantage that the borehole has already been drilled and is being monitored.\u201d<\/em><\/p>\n<\/blockquote>\n\n

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Prof. Andreas Peschel<\/strong>, Director of the Department INW-4<\/p>\n<\/blockquote>\n\n

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The theoretical potential of blue hydrogen<\/h3>\n\n

In theory, there are numerous storage possibilities in the Earth\u2019s crust. \u201cIn practice, however, most of these storage options have not yet been developed,\u201d explains Peschel. Their development is associated with a great deal of expenditure, years of preparation, and subsequent monitoring that would last at least 100 years. There would also be follow-up costs and subsequent risks because the CO2<\/sub> can escape if the storage facilities are not leak-proof. \u201cWe\u2019re talking about very theoretical storage potential,\u201d Peschel adds. Moreover, there has been a fundamental decision taken in Germany not to store any captured CO2<\/sub>. \u201cIn doing so, we are simply passing on the problem of getting rid of our waste to another country.\u201d <\/p>\n\n

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A suitable interim solution<\/h3>\n\n

Blue hydrogen offers the possibility of quickly reducing the CO2<\/sub> emissions released during hydrogen production. This enables the hydrogen economy to be ramped up more quickly. The additional costs for storage in existing structures are comparatively low. \u201cUltimately, however, the risk of storage is usually borne by countries or state-owned companies. These disadvantages do not arise in the first place with green hydrogen. The use of green hydrogen therefore makes sense in the long run. But moving forward, blue hydrogen can be a suitable transition solution in the interim,\u201d says Peschel, who views the revised National Hydrogen Strategy as a good solution for the time being. <\/p>\n\n

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The copyright for the images used on this website is held by Forschungszentrum J\u00fclich, aligator kommunikation GmbH andstock.adobe.com.<\/p>\n","protected":false},"featured_media":4186,"template":"","categories":[253,252,254],"tags":[256],"class_list":["post-8421","aktuelles","type-aktuelles","status-publish","has-post-thumbnail","hentry","category-forschung-en","category-general-en","category-wasserstoff-en","tag-the-colours-of-hydrogen"],"yoast_head":"\nThe Colours of Hydrogen, Part 2: Blue - HCH2<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hch2.de\/en\/news\/the-colours-of-hydrogen-part-2-blue\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Colours of Hydrogen, Part 2: Blue - HCH2\" \/>\n<meta property=\"og:description\" content=\"There has been no change regarding which colour of hydrogen remains the ultimate target: the future is green. 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