{"id":152811,"date":"2026-04-07T09:24:11","date_gmt":"2026-04-07T07:24:11","guid":{"rendered":"https:\/\/www.immo-invest.ch\/wasserstoff-kann-viel-aber-nicht-alles\/"},"modified":"2026-04-07T11:47:17","modified_gmt":"2026-04-07T09:47:17","slug":"wasserstoff-kann-viel-aber-nicht-alles","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/wasserstoff-kann-viel-aber-nicht-alles\/","title":{"rendered":"L&rsquo;hydrog\u00e8ne peut beaucoup, mais pas tout"},"content":{"rendered":"\n\n<p class=\"wp-block-paragraph\">Dans le cadre d&rsquo;une m\u00e9ta-analyse des faits, l&rsquo;institut Fraunhofer ISI a analys\u00e9 774 affirmations individuelles et les a condens\u00e9es en 77 affirmations cl\u00e9s. Il n&rsquo;en est pas r\u00e9sult\u00e9 un nouveau document d&rsquo;opinion, mais une synth\u00e8se de l&rsquo;\u00e9tat actuel des connaissances. Le r\u00e9sultat est nuanc\u00e9, mais sans \u00e9quivoque sur les points essentiels. L&rsquo;auteur principal, Nils Bittner, le r\u00e9sume ainsi : l&rsquo;hydrog\u00e8ne peut avoir un impact \u00e9norme l\u00e0 o\u00f9 il n&rsquo;existe pas d&rsquo;alternatives \u00e9quivalentes. L\u00e0 o\u00f9 de telles alternatives existent, son utilisation co\u00fbte de pr\u00e9cieuses ressources et du temps.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le goulot d&rsquo;\u00e9tranglement de l&rsquo;efficacit\u00e9<br><\/strong>Le probl\u00e8me fondamental r\u00e9side dans la physique. L&rsquo;hydrog\u00e8ne vert est produit par \u00e9lectrolyse. Selon le proc\u00e9d\u00e9, il faut environ 50 \u00e0 60 kWh d&rsquo;\u00e9lectricit\u00e9 par kilogramme. La compression, le transport et la reconversion consomment encore plus d&rsquo;\u00e9nergie. Au final, il ne reste souvent qu&rsquo;une fraction des kilowattheures utilis\u00e9s au d\u00e9part. Les pompes \u00e0 chaleur et les v\u00e9hicules \u00e0 batterie utilisent donc la m\u00eame \u00e9lectricit\u00e9 de mani\u00e8re beaucoup plus efficace.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 o\u00f9 H\u2082 reste indispensable<br><\/strong>Malgr\u00e9 tout, il existe des domaines o\u00f9 l&rsquo;hydrog\u00e8ne n&rsquo;a pas d&rsquo;alternative valable. L&rsquo;industrie sid\u00e9rurgique en a besoin pour r\u00e9duire le minerai de fer, l&rsquo;industrie chimique comme mati\u00e8re premi\u00e8re pour l&rsquo;ammoniac et le m\u00e9thanol. L&rsquo;aviation, la navigation et le transport lourd ne peuvent gu\u00e8re \u00eatre \u00e9lectrifi\u00e9s directement. L&rsquo;hydrog\u00e8ne est ici le moyen de choix. Il n&rsquo;existe pas non plus actuellement d&rsquo;alternative comparable pour le stockage saisonnier d&rsquo;\u00e9nergie \u00e0 long terme, sur plusieurs semaines ou mois. En Suisse, cette \u00e9valuation co\u00efncide avec la strat\u00e9gie de la Conf\u00e9d\u00e9ration en mati\u00e8re d&rsquo;hydrog\u00e8ne, qui pr\u00e9voit H\u2082 en premier lieu pour la chaleur industrielle \u00e0 haute temp\u00e9rature et les secteurs des transports difficilement d\u00e9carbonisables.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le probl\u00e8me de l&rsquo;\u0153uf et de la poule freine la mont\u00e9e en puissance<br><\/strong>Une \u00e9conomie de l&rsquo;hydrog\u00e8ne qui fonctionne a besoin d&rsquo;infrastructures, comme des pipelines, des r\u00e9servoirs en caverne, des installations d&rsquo;\u00e9lectrolyse. Mais les entreprises n&rsquo;investissent que lorsque l&rsquo;approvisionnement est assur\u00e9 et les exploitants de r\u00e9seaux ne construisent que lorsque la demande est suffisante. Ce probl\u00e8me de la poule et de l&rsquo;\u0153uf ralentit consid\u00e9rablement le d\u00e9marrage du march\u00e9. C&rsquo;est pourquoi le Fraunhofer ISI recommande de se concentrer sur les clusters industriels plut\u00f4t que de construire un r\u00e9seau couvrant tout le territoire jusque dans les zones r\u00e9sidentielles.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Les importations ne r\u00e9solvent le probl\u00e8me qu&rsquo;\u00e0 moiti\u00e9<br><\/strong>L&rsquo;Allemagne devra importer jusqu&rsquo;\u00e0 80 pour cent de ses besoins en hydrog\u00e8ne. Le transport sur de grandes distances n\u00e9cessite g\u00e9n\u00e9ralement une transformation en ammoniac ou en hydrog\u00e8ne liquide, avec des pertes d&rsquo;\u00e9nergie suppl\u00e9mentaires. Au lieu de d\u00e9pendances fossiles, de nouvelles cha\u00eenes d&rsquo;approvisionnement mondiales voient ainsi le jour. La Suisse ne deviendra pas non plus autosuffisante en hydrog\u00e8ne. Les cantons de B\u00e2le-Ville et de B\u00e2le-Campagne ont adopt\u00e9 pour la premi\u00e8re fois en f\u00e9vrier 2026 une strat\u00e9gie commune pour l&rsquo;hydrog\u00e8ne et calculent pour 2050 un besoin de 0,4 \u00e0 3,4 pour cent du besoin \u00e9nerg\u00e9tique total, concentr\u00e9 sur l&rsquo;industrie et le trafic lourd.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;hydrog\u00e8ne doit chauffer les maisons, alimenter les voitures et sauver l&rsquo;industrie. Cela semble \u00eatre une solution simple \u00e0 un probl\u00e8me complexe. L&rsquo;Institut Fraunhofer pour la recherche sur les syst\u00e8mes et l&rsquo;innovation a d\u00e9sormais \u00e9valu\u00e9 plus de 100 \u00e9tudes et le r\u00e9sultat est clair, l&rsquo;hydrog\u00e8ne n&rsquo;est pas une panac\u00e9e, mais un outil cibl\u00e9. Si on l&rsquo;utilise mal, on gaspille des ressources et du temps.<\/p>\n","protected":false},"author":2,"featured_media":152812,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[22699,8747,56006,22703],"tags":[2053,872,3931,4560,2002,36112,2163],"class_list":["post-152811","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-energie","category-international","category-mobilite","tag-energieeffizienz-fr","tag-immoinvest-fr","tag-immonews-fr","tag-industrie-fr","tag-news-fr","tag-schwerverkehr-fr","tag-wasserstoff-fr"],"acf":{"bild_mit_ki_erstellt_worden":"","lead":"L'hydrog\u00e8ne doit chauffer les maisons, alimenter les voitures et sauver l'industrie. Cela semble \u00eatre une solution simple \u00e0 un probl\u00e8me complexe. L'Institut Fraunhofer pour la recherche sur les syst\u00e8mes et l'innovation a d\u00e9sormais \u00e9valu\u00e9 plus de 100 \u00e9tudes et le r\u00e9sultat est clair, l'hydrog\u00e8ne n'est pas une panac\u00e9e, mais un outil cibl\u00e9. Si on l'utilise mal, on gaspille des ressources et du temps.","autor":"","ort":"","bildunterschrift":"","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"L&#039;hydrog\u00e8ne doit chauffer les maisons, alimenter les voitures et sauver l&#039;industrie. Cela semble \u00eatre une solution simple \u00e0 un probl\u00e8me complexe. L&#039;Institut Fraunhofer pour la recherche sur les syst\u00e8mes et l&#039;innovation a d\u00e9sormais \u00e9valu\u00e9 plus de 100 \u00e9tudes et le r\u00e9sultat est clair, l&#039;hydrog\u00e8ne n&#039;est pas une panac\u00e9e, mais un outil cibl\u00e9. 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