{"id":163485,"date":"2026-08-28T09:00:00","date_gmt":"2026-08-28T07:00:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/?p=163485"},"modified":"2026-08-24T10:43:51","modified_gmt":"2026-08-24T08:43:51","slug":"eine-region-verwandelt-ihren-muell-in-waerme","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/eine-region-verwandelt-ihren-muell-in-waerme\/","title":{"rendered":"Une r\u00e9gion transforme ses d\u00e9chets en chaleur"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Les d&eacute;chets comme source d&rsquo;&eacute;nergie<\/strong><br>Pour l&rsquo;Office f&eacute;d&eacute;ral de l&rsquo;&eacute;nergie, il ne fait aucun doute que la chaleur r&eacute;siduelle issue du traitement des d&eacute;chets est consid&eacute;r&eacute;e comme neutre en CO2. Limeco tire pr&eacute;cis&eacute;ment parti de cette condition. La chaleur r&eacute;siduelle de l&rsquo;usine d&rsquo;incin&eacute;ration de Dietikon alimente en chauffage r&eacute;gional les foyers et les entreprises de la r&eacute;gion. En 2025, le r&eacute;seau a fourni 173 gigawattheures, permettant ainsi d&rsquo;&eacute;conomiser 58 300 tonnes de CO&#8322; et s&rsquo;est &eacute;tendu de 10,8 kilom&egrave;tres pour atteindre d&eacute;sormais 74,3 kilom&egrave;tres de trac&eacute;. Cela &eacute;quivaut &agrave; environ 323 camions-citernes de fioul &agrave; pleine charge qui n&rsquo;ont jamais eu &agrave; rouler. Plus de 1 600 b&acirc;timents y sont aujourd&rsquo;hui raccord&eacute;s.<br><br><strong>L&rsquo;eau, deuxi&egrave;me source d&rsquo;&eacute;nergie<\/strong><br>Le chauffage urbain ne provient pas uniquement de la chemin&eacute;e de l&rsquo;usine d&rsquo;incin&eacute;ration des d&eacute;chets. La station d&rsquo;&eacute;puration fournit &eacute;galement de l&rsquo;&eacute;nergie. La chaleur issue des eaux us&eacute;es alimente d&rsquo;ores et d&eacute;j&agrave; le r&eacute;seau de chauffage urbain du <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Quartier&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Amtliches, historisches, soziales oder stadtplanerisches Stadtviertel&lt;\/div&gt;\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">quartier<\/span> Limmatfeld &agrave; Dietikon. La station d&rsquo;&eacute;puration de Dietikon est, apr&egrave;s celles de Zurich et de Winterthour, la troisi&egrave;me installation la plus sollicit&eacute;e du canton et, en m&ecirc;me temps, une source d&rsquo;&eacute;nergie sous-estim&eacute;e. Les d&eacute;chets et les eaux us&eacute;es contribuent ensemble &agrave; rendre la vall&eacute;e de la Limmat moins d&eacute;pendante des combustibles fossiles que beaucoup ne le pensent.<br><br><strong>Le r&eacute;seau s&rsquo;&eacute;tend, l&rsquo;objectif est clair<\/strong><br>&Agrave; son ach&egrave;vement en 2045, le r&eacute;seau de chauffage urbain devrait s&rsquo;&eacute;tendre sur plus de 84 kilom&egrave;tres et fournir environ 260 gigawattheures par an. Limeco figurera ainsi parmi les dix plus grands r&eacute;seaux de chauffage urbain de Suisse une fois les travaux achev&eacute;s. Les &eacute;conomies de CO&#8322; d&eacute;passeront alors 60 000 tonnes par an, ce qui correspond &agrave; environ 25 millions de litres de fioul. D&rsquo;ici 2050, la population de la vall&eacute;e de la Limmat atteindra environ 130 000 habitants. Les infrastructures n&eacute;cessaires sont en cours de construction.<br><strong><br>Stocker l&rsquo;&eacute;lectricit&eacute; lorsqu&rsquo;elle est produite en exc&egrave;s<\/strong><br>Le syst&egrave;me va au-del&agrave; du simple chauffage. Limeco exploite d&rsquo;ores et d&eacute;j&agrave; la premi&egrave;re installation industrielle &laquo;power-to-gas&raquo; de Suisse. Celle-ci permet de transformer l&rsquo;&eacute;lectricit&eacute; renouvelable exc&eacute;dentaire en m&eacute;thane stockable et neutre en CO&#8322;. Ce gaz est inject&eacute; dans le r&eacute;seau de gaz et peut &ecirc;tre reconverti en &eacute;lectricit&eacute; en cas de besoin. &Agrave; cela s&rsquo;ajoutent 624 panneaux solaires install&eacute;s sur le toit de la station d&rsquo;&eacute;puration, qui produisent de l&rsquo;&eacute;lectricit&eacute; verte directement sur place. Ce n&rsquo;est qu&rsquo;en produisant et en stockant l&rsquo;&eacute;nergie que l&rsquo;on comprend v&eacute;ritablement la transition &eacute;nerg&eacute;tique.<br><br><strong>La r&eacute;silience comme principe syst&eacute;mique<\/strong><br>La vall&eacute;e de la Limmat doit non seulement b&eacute;n&eacute;ficier d&rsquo;un approvisionnement propre, mais aussi s&ucirc;r. Le LEZ (Centre &eacute;nerg&eacute;tique de la vall&eacute;e de la Limmat) est un p&ocirc;le multi-&eacute;nerg&eacute;tique. Diff&eacute;rentes installations, technologies et sources d&rsquo;&eacute;nergie sont interconnect&eacute;es afin que la chaleur, l&rsquo;&eacute;lectricit&eacute; et le gaz soient disponibles au bon moment, au bon endroit, en quantit&eacute; suffisante et avec la qualit&eacute; requise. Ce qui semble aujourd&rsquo;hui encore relever du futur est d&eacute;j&agrave; ancr&eacute; dans le plan directeur 2050. La r&eacute;silience n&rsquo;est pas ici une promesse marketing, mais une architecture syst&eacute;mique.<br><br><strong>Trois produits, un principe<\/strong><br>Les immeubles raccord&eacute;s peuvent choisir entre trois formules de chauffage : Standard, Pur et Pur. L&rsquo;approvisionnement peut &ecirc;tre personnalis&eacute; en fonction des exigences &eacute;cologiques et du budget. La loi cantonale sur l&rsquo;&eacute;nergie, en vigueur depuis septembre 2022, donne un &eacute;lan suppl&eacute;mentaire &agrave; la transition des syst&egrave;mes de chauffage fossiles vers le chauffage urbain. Ceux qui se chauffent encore au fioul aujourd&rsquo;hui le feront bient&ocirc;t en infraction avec la loi.<br><br>Texte : Sabine Billeter &bull; Photos : Limeco<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>La vall\u00e9e de la Limmat produit de l&rsquo;\u00e9nergie \u00e0 partir de ce que d&rsquo;autres jettent. Limeco transforme les d\u00e9chets et les eaux us\u00e9es en chaleur \u00e0 empreinte carbone nulle et alimente ainsi d\u00e8s aujourd&rsquo;hui plus de 1 600 immeubles. Le r\u00e9seau s&rsquo;\u00e9tend, les chiffres sont au rendez-vous et les plus grandes avanc\u00e9es sont encore \u00e0 venir.<\/p>\n","protected":false},"author":57,"featured_media":163486,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pmpro_default_level":"","inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[22699,8747,56027],"tags":[2052,4856,3784,872,3931,61315,1653,2002],"class_list":["post-163485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-energie","category-planification-developpement","tag-abwaerme-fr","tag-energiewende-2-fr","tag-fernwaerme-fr","tag-immoinvest-fr","tag-immonews-fr","tag-kreislaufenergie","tag-limmattal-fr","tag-news-fr","pmpro-has-access"],"acf":{"bild_mit_ki_erstellt_worden":"","lead":"La vall\u00e9e de la Limmat produit de l'\u00e9nergie \u00e0 partir de ce que d'autres jettent. Limeco transforme les d\u00e9chets et les eaux us\u00e9es en chaleur \u00e0 empreinte carbone nulle et alimente ainsi d\u00e8s aujourd'hui plus de 1 600 immeubles. Le r\u00e9seau s'\u00e9tend, les chiffres sont au rendez-vous et les plus grandes avanc\u00e9es sont encore \u00e0 venir.","autor":"","ort":"","bildunterschrift":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"La vall\u00e9e de la Limmat produit de l&#039;\u00e9nergie \u00e0 partir de ce que d&#039;autres jettent. Limeco transforme les d\u00e9chets et les eaux us\u00e9es en chaleur \u00e0 empreinte carbone nulle et alimente ainsi d\u00e8s aujourd&#039;hui plus de 1 600 immeubles. 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