{"id":34781,"date":"2026-11-05T21:09:42","date_gmt":"2026-11-05T21:09:42","guid":{"rendered":"https:\/\/infos-media-nantes.fr\/?p=34781"},"modified":"2026-11-05T21:09:42","modified_gmt":"2026-11-05T21:09:42","slug":"le-mans-radiant-inauguration-demonstrateur-solaire-industriel-2026","status":"publish","type":"post","link":"https:\/\/infos-media-nantes.fr\/le-mans-radiant-inauguration-demonstrateur-solaire-industriel-2026\/","title":{"rendered":"Le Mans : Radiant inaugure son d\u00e9monstrateur solaire pour chauffer l\u2019industrie"},"content":{"rendered":"<article>\n<p><strong>La jeune entreprise Radiant a inaugur\u00e9 mercredi 4 novembre 2026 son premier d\u00e9monstrateur industriel dans la zone de la Cartoucherie, au Mans. Son ambition est de produire de la chaleur pour les usines \u00e0 partir du soleil, en rempla\u00e7ant une partie du gaz naturel. Le site, soutenu par Le Mans M\u00e9tropole, doit d\u00e9sormais permettre de tester cette technologie en conditions r\u00e9elles.<\/strong><\/p>\n<h2>Comment Radiant transforme-t-elle la lumi\u00e8re du soleil en chaleur ?<\/h2>\n<p>\u00c0 la diff\u00e9rence des panneaux photovolta\u00efques, qui fabriquent de l\u2019\u00e9lectricit\u00e9, le dispositif d\u00e9velopp\u00e9 par Radiant vise directement la chaleur industrielle. Des miroirs motoris\u00e9s, appel\u00e9s h\u00e9liostats, suivent le soleil et orientent ses rayons vers un r\u00e9cepteur situ\u00e9 sur une tour centrale.<\/p>\n<p>Le r\u00e9cepteur utilise un mat\u00e9riau c\u00e9ramique pour absorber l\u2019\u00e9nergie concentr\u00e9e et chauffer un flux d\u2019air. Cet air chaud pourrait ensuite alimenter les besoins de proc\u00e9d\u00e9s industriels comme le s\u00e9chage, la cuisson ou certains fours. La technologie revendique des temp\u00e9ratures pouvant atteindre 1 000 \u00b0C, mais les performances annonc\u00e9es devront \u00eatre \u00e9valu\u00e9es sur le prototype et dans les futures installations commerciales.<\/p>\n<h2>Un site pilote de 4 000 m\u00b2 au Mans<\/h2>\n<p>Le d\u00e9monstrateur est implant\u00e9 sur un terrain de 4 000 m\u00b2 mis \u00e0 disposition dans la zone de la Cartoucherie. Il comprend 52 miroirs d\u2019environ 7 m\u00b2 chacun et une tour d\u2019une quinzaine de m\u00e8tres. Sa puissance annonc\u00e9e peut atteindre 200 kW.<\/p>\n<p>Fond\u00e9e par Thomas Delhon et Alexandre Meurisse, deux ing\u00e9nieurs ayant travaill\u00e9 dans le secteur spatial, Radiant compte une \u00e9quipe d\u2019ing\u00e9nieurs engag\u00e9s dans la mise au point du proc\u00e9d\u00e9. Le choix du Mans doit faciliter les visites des entreprises int\u00e9ress\u00e9es, mais aussi la poursuite des travaux de recherche et d\u00e9veloppement.<\/p>\n<h2>Pourquoi les industriels s\u2019int\u00e9ressent-ils \u00e0 cette solution ?<\/h2>\n<p>De nombreux ateliers utilisent aujourd\u2019hui des combustibles fossiles pour atteindre les temp\u00e9ratures n\u00e9cessaires \u00e0 la transformation des mati\u00e8res. Dans certaines situations, une chaleur d\u2019origine solaire pourrait r\u00e9duire leur consommation de gaz et leurs \u00e9missions associ\u00e9es.<\/p>\n<p>Cette solution ne fonctionne pas de fa\u00e7on identique toute l\u2019ann\u00e9e : l\u2019ensoleillement reste variable. Radiant travaille donc sur des possibilit\u00e9s de stockage thermique afin d\u2019utiliser une partie de la chaleur lorsque la production solaire diminue. Le co\u00fbt, l\u2019emprise fonci\u00e8re et l\u2019int\u00e9gration aux proc\u00e9d\u00e9s existants d\u00e9termineront la pertinence de chaque projet.<\/p>\n<h2>Quel financement pour le d\u00e9monstrateur ?<\/h2>\n<p>L\u2019entreprise a lev\u00e9 1,5 million d\u2019euros pour soutenir son d\u00e9veloppement et la construction du prototype. Le Mans M\u00e9tropole lui apporte \u00e9galement une aide \u00e0 l\u2019investissement de 100 000 \u20ac, en compl\u00e9ment de la mise \u00e0 disposition de foncier.<\/p>\n<p>Ces montants ne doivent pas \u00eatre interpr\u00e9t\u00e9s comme une garantie de rentabilit\u00e9 industrielle. La phase actuelle vise pr\u00e9cis\u00e9ment \u00e0 valider le fonctionnement du syst\u00e8me, \u00e0 accueillir des partenaires et \u00e0 pr\u00e9parer de futures implantations.<\/p>\n<h2>Quelles sont les prochaines \u00e9tapes ?<\/h2>\n<p>Apr\u00e8s l\u2019inauguration du 4 novembre, Radiant pr\u00e9voit des essais et des d\u00e9monstrations en conditions r\u00e9elles, avec des industriels int\u00e9ress\u00e9s par la chaleur solaire. L\u2019objectif est de passer d\u2019un prototype \u00e0 des installations raccord\u00e9es \u00e0 des \u00e9quipements de production.<\/p>\n<p>Le projet illustre un enjeu \u00e9conomique majeur en Pays de la Loire : d\u00e9carboner les activit\u00e9s industrielles sans compromettre la continuit\u00e9 des proc\u00e9d\u00e9s et leur comp\u00e9titivit\u00e9. Les r\u00e9sultats des essais et les premiers contrats constitueront les prochaines \u00e9tapes \u00e0 suivre.<\/p>\n<p><small>Image \u00e0 la une : portrait d&#8217;archive des cofondateurs de Radiant, r\u00e9alis\u00e9 avant l&#8217;inauguration du d\u00e9monstrateur du Mans. Ce visuel ne repr\u00e9sente pas le site de production.<\/small><\/p>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>Radiant a inaugur\u00e9 le 4 novembre 2026 son premier d\u00e9monstrateur de chaleur solaire industrielle au Mans. Fonctionnement, 52 miroirs, 200 kW et soutien de la M\u00e9tropole.<\/p>\n","protected":false},"author":3,"featured_media":34812,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":"","event_start_date":"","event_end_date":"","event_location":"","imn_event_city":"","imn_event_start_time":"","imn_event_end_time":"","imn_event_all_day":"","imn_event_address":"","imn_event_ticket_url":"","imn_event_price":"","imn_event_status":"","imn_event_organizer":"","imn_event_accessibility":""},"categories":[29,22],"tags":[301,4067,1049,4750,11219,1432,267],"class_list":["post-34781","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-entreprises-locales-nantes","category-actualites-nantes","tag-301","tag-energie-solaire","tag-industrie","tag-le-mans","tag-radiant","tag-sarthe","tag-transition-energetique"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Le Mans : Radiant inaugure son d\u00e9monstrateur solaire pour chauffer l\u2019industrie - Infos M\u00e9dia Nantes, infos locales, \u00e9v\u00e9nements et actualit\u00e9 utiles \u00e0 Nantes et ses alentours<\/title>\n<meta name=\"description\" content=\"Au Mans, Radiant inaugure un d\u00e9monstrateur solaire de 200 kW destin\u00e9 \u00e0 la chaleur industrielle. 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