{"id":1428,"date":"2025-10-10T14:15:03","date_gmt":"2025-10-10T14:15:03","guid":{"rendered":"https:\/\/infos-media-nantes.fr\/?p=1428"},"modified":"2026-09-25T10:37:30","modified_gmt":"2026-09-25T10:37:30","slug":"reseaux-chaleur-nantes-metropole","status":"publish","type":"post","link":"https:\/\/infos-media-nantes.fr\/reseaux-chaleur-nantes-metropole\/","title":{"rendered":"La Chapelle-sur-Erdre : 2,1 M\u20ac pour la chaufferie biomasse de Mazaire, 10 b\u00e2timents raccord\u00e9s"},"content":{"rendered":"
\n

Le futur r\u00e9seau de chaleur de Mazaire, \u00e0 La Chapelle-sur-Erdre, entre dans une phase tr\u00e8s concr\u00e8te. La chaufferie biomasse est en construction depuis le printemps 2026 et les travaux doivent se poursuivre jusqu\u2019en janvier 2027<\/strong>.<\/p>\n

Un investissement de 2,1 millions d\u2019euros<\/h2>\n

L\u2019op\u00e9ration repr\u00e9sente un investissement de 2,1 millions d\u2019euros<\/strong>. La chaufferie prend place sur l\u2019ancien parking des cars scolaires du coll\u00e8ge Le Grand Beauregard.<\/p>\n

Le b\u00e2timent occupera environ 100 m\u00b2. Il comprendra \u00e9galement un silo enterr\u00e9 de 60 m\u00b2 et une chemin\u00e9e de 15 m\u00e8tres, dont l\u2019installation est annonc\u00e9e d\u00e9but octobre.<\/p>\n

500 m\u00e8tres de r\u00e9seau pour 10 b\u00e2timents publics<\/h2>\n

Le projet pr\u00e9voit environ 500 m\u00e8tres de r\u00e9seau souterrain<\/strong>. \u00c0 terme, 10 b\u00e2timents<\/strong> doivent \u00eatre raccord\u00e9s.<\/p>\n

Parmi eux figurent le coll\u00e8ge, l\u2019\u00e9cole primaire La Lande de Mazaire, un multi-accueil, le point information jeunesse et un gymnase. L\u2019objectif est de mutualiser la production de chaleur \u00e0 l\u2019\u00e9chelle du secteur.<\/p>\n

170 tonnes de CO\u2082 \u00e9vit\u00e9es chaque ann\u00e9e<\/h2>\n

La chaleur sera principalement produite \u00e0 partir de copeaux de bois issus notamment d\u2019\u00e9lagages, de travaux d\u2019entretien des sous-bois et de d\u00e9chets de scieries. Un appoint au gaz restera pr\u00e9vu lors des p\u00e9riodes de grand froid.<\/p>\n

Nantes M\u00e9tropole estime que le dispositif permettra de r\u00e9duire d\u2019environ 70 % les \u00e9missions de CO\u2082<\/strong> li\u00e9es au chauffage des b\u00e2timents concern\u00e9s, soit pr\u00e8s de 170 tonnes \u00e9vit\u00e9es chaque ann\u00e9e<\/strong>.<\/p>\n

La qualit\u00e9 de l\u2019air fera l\u2019objet d\u2019un suivi<\/h2>\n

Le projet a suscit\u00e9 des questions de riverains sur les \u00e9missions atmosph\u00e9riques. Un comit\u00e9 de suivi a \u00e9t\u00e9 cr\u00e9\u00e9 en janvier 2026 apr\u00e8s une phase de dialogue engag\u00e9e en 2024.<\/p>\n

Nantes M\u00e9tropole annonce des objectifs de performance plus contraignants que les exigences r\u00e9glementaires pour certains polluants. Des mesures de qualit\u00e9 de l\u2019air sont pr\u00e9vues avant et apr\u00e8s la mise en service de la chaufferie, avec d\u2019autres relev\u00e9s possibles si n\u00e9cessaire.<\/p>\n

L\u2019avenue des Noieries a aussi \u00e9t\u00e9 r\u00e9am\u00e9nag\u00e9e<\/h2>\n

La construction de la chaufferie a entra\u00een\u00e9 le d\u00e9placement du stationnement des cars scolaires. Entre avril et septembre 2026, l\u2019avenue des Noieries a donc \u00e9t\u00e9 r\u00e9am\u00e9nag\u00e9e avec un quai pour les cars, un cheminement pi\u00e9ton s\u00e9curis\u00e9, une piste cyclable et de nouveaux am\u00e9nagements paysagers.<\/p>\n

L\u2019avenue de Beauregard doit \u00e0 son tour faire l\u2019objet d\u2019un r\u00e9am\u00e9nagement en 2027-2028.<\/p>\n

\u00c0 lire aussi sur IMN :<\/strong> le d\u00e9ploiement des r\u00e9seaux de chaleur se poursuit dans plusieurs communes de la m\u00e9tropole. \u00c0 Saint-Herblain, le chantier du r\u00e9seau de chaleur a \u00e9galement d\u00e9marr\u00e9 dans le Bourg<\/u><\/strong><\/a>.<\/div>\n

Consulter le point chantier publi\u00e9 par Nantes M\u00e9tropole<\/u><\/strong><\/a>.<\/p>\n

Source : Nantes M\u00e9tropole, 23 septembre 2026.<\/small>
\n<\/article>\n","protected":false},"excerpt":{"rendered":"

\u00c0 La Chapelle-sur-Erdre, la chaufferie biomasse de Mazaire repr\u00e9sente 2,1 M\u20ac. 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