{"id":5879,"date":"2022-02-21T08:59:50","date_gmt":"2022-02-21T07:59:50","guid":{"rendered":"https:\/\/sceaux-lagazette.fr\/?p=5879"},"modified":"2022-02-21T08:59:50","modified_gmt":"2022-02-21T07:59:50","slug":"couts-de-la-renovation-energetique-de-logements","status":"publish","type":"post","link":"https:\/\/sceaux-lagazette.fr\/index.php\/2022\/02\/21\/couts-de-la-renovation-energetique-de-logements\/","title":{"rendered":"Co\u00fbts de la r\u00e9novation \u00e9nerg\u00e9tique de logements"},"content":{"rendered":"\n<p>En d\u00e9cembre dernier, France Strat\u00e9gie a publi\u00e9 <a rel=\"noreferrer noopener\" href=\"https:\/\/www.strategie.gouv.fr\/sites\/strategie.gouv.fr\/files\/atoms\/files\/fs_-_2021_-_na_104_-_rentabilites_economiques_renovation_energetiques_logements_-_decembre_0.pdf\" target=\"_blank\">une note<\/a> sur la rentabilit\u00e9 \u00e9conomique des r\u00e9novations \u00e9nerg\u00e9tiques des logements. La motivation de cette r\u00e9flexion est annonc\u00e9e d\u00e8s le d\u00e9but de la note&nbsp;: Afin de se conformer aux objectifs de la Strat\u00e9gie nationale bas carbone (SNBC), il s\u2019agirait, selon<br>le Haut Conseil pour le climat, de <em>passer d\u2019environ 70 000 r\u00e9novations globales effectu\u00e9es annuellement (en moyenne sur la p\u00e9riode 2012-2018), \u00e0 370 000 par an apr\u00e8s 2022 et 700 000 par an \u00e0 partir de 2030.<\/em><\/p>\n\n\n\n<p>L\u2019un des freins connus \u00e0 cet objectif est appel\u00e9 \u00ab&nbsp;effet rebond&nbsp;\u00bb&nbsp;: la plupart des m\u00e9nages habitant un logement (tr\u00e8s) mal isol\u00e9 chauffent mal leur logement, parce qu\u2019ils n\u2019en ont pas les moyens techniques (la chaudi\u00e8re n\u2019est pas assez puissante) ou financiers. R\u00e9sultat, quand ils effectuent des travaux, le gain financier est souvent (beaucoup) plus faible qu\u2019attendu, parce qu\u2019ils pr\u00e9f\u00e8rent d\u2019abord am\u00e9liorer leur confort thermique.<\/p>\n\n\n\n<p>France Strat\u00e9gie a donc imagin\u00e9 un m\u00e9canisme pour limiter cet effet rebond et d\u00e9passer la r\u00e9pugnance ou la difficult\u00e9 des propri\u00e9taires \u00e0 mobiliser l\u2019\u00e9pargne n\u00e9cessaire aux travaux&nbsp;: mettre en place un organisme qui prendra en charge le co\u00fbt des travaux et se fera ensuite rembourser chaque ann\u00e9e 75 % du gain financier th\u00e9oriquement attendu (m\u00e9thode cens\u00e9e limiter l\u2019effet rebond). C\u2019est sur cette base qu\u2019il a fait faire une \u00e9tude visant \u00e0 \u00e9valuer quelle part du parc actuel serait rentable \u00e9conomiquement \u00e0 r\u00e9nover. L\u2019\u00e9tude ne porte que sur les r\u00e9sidences principales du parc priv\u00e9 (il n\u2019inclue donc pas les logements sociaux), <a rel=\"noreferrer noopener\" href=\"https:\/\/www.insee.fr\/fr\/statistiques\/5761272\" target=\"_blank\">soit environ 22 millions de logements<\/a>. Le tableau ci-dessous donne la <a rel=\"noreferrer noopener\" href=\"https:\/\/www.statistiques.developpement-durable.gouv.fr\/le-parc-de-logements-par-classe-de-consommation-energetique\" target=\"_blank\">composition du parc <\/a>(y compris logements sociaux) selon leur classement thermique en 2018. Un tiers de ce parc est class\u00e9 en D, un quart mieux que D et le reste moins bien.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"661\" height=\"436\" src=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Parc-et-performance-\u00e9nerg\u00e9tique-2.png\" alt=\"\" class=\"wp-image-5889\" srcset=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Parc-et-performance-\u00e9nerg\u00e9tique-2.png 661w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Parc-et-performance-\u00e9nerg\u00e9tique-2-300x198.png 300w\" sizes=\"(max-width: 661px) 100vw, 661px\" \/><figcaption>Champ : ensemble des r\u00e9sidences principales au 1er janvier 2018, France m\u00e9tropolitaine.<br>Source : Fid\u00e9li 2018, base des DPE 2017 et 2018 de l\u2019Ademe, mod\u00e8le Enerter (ann\u00e9e 2015)<\/figcaption><\/figure>\n\n\n\n<p>France Strat\u00e9gie a pris comme hypoth\u00e8ses que 30 % du co\u00fbt des op\u00e9rations \u00e9tait subventionn\u00e9 et que les \u00e9ventuelles chaudi\u00e8res au fuel (les plus polluantes) \u00e9taient remplac\u00e9es par d\u2019autres moyens.<\/p>\n\n\n\n<p>Il a fait diff\u00e9rentes hypoth\u00e8ses, en particulier sur l\u2019objectif de r\u00e9novation&nbsp;: viser un classement C, B ou A. D\u2019autres hypoth\u00e8ses ont \u00e9t\u00e9 faites, notamment sur le taux d\u2019int\u00e9r\u00eat.<\/p>\n\n\n\n<p>Quel que soit l\u2019objectif (r\u00e9novation vers A, B ou C), aucune op\u00e9ration (ou presque) n\u2019est rentable en 10 ans. Avec l\u2019objectif de r\u00e9f\u00e9rence (donc au c\u0153ur de la fourchette des diff\u00e9rentes simulations), l\u2019op\u00e9ration est rentable <a>pour 28 % du parc si on vise un classement en <\/a>A, pour 56 % du parc si on vise un classement en B, pour 72 % du parc si on vise un classement en C.<\/p>\n\n\n\n<p>On ne peut que conclure des r\u00e9sultats de cette \u00e9tude que les conditions \u00e9conomiques ne sont actuellement pas r\u00e9unies pour une r\u00e9novation compl\u00e8te du parc \u00e0 l\u2019horizon 2050.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quelles conditions \u00e9conomiques \u00e0 plus de r\u00e9novation&nbsp;?<\/h2>\n\n\n\n<p>Pour quelle raison un objectif de soci\u00e9t\u00e9 important (ici lutter contre le r\u00e9chauffement climatique) ne peut-il pas \u00eatre atteint \u00e9conomiquement (alors qu\u2019il peut l\u2019\u00eatre techniquement)&nbsp;? Pour les \u00e9conomistes, l\u2019explication est simple&nbsp;: l\u2019op\u00e9ration de chauffage ne supporte pas les co\u00fbts li\u00e9s \u00e0 l\u2019\u00e9mission de gaz \u00e0 effets de serre&nbsp;: on parle d\u2019externalit\u00e9s (parce que les co\u00fbts sont support\u00e9s par d\u2019autres) n\u00e9gatives (parce que ce sont des co\u00fbts, on peut imaginer des externalit\u00e9s positives).<\/p>\n\n\n\n<p>La conclusion des \u00e9conomistes est que le meilleur moyen pour que les acteurs \u00e9conomiques prennent des d\u00e9cisions compatibles avec l\u2019ensemble des besoins (ici celui de limiter les \u00e9missions de GES) consiste \u00e0 \u00ab&nbsp;internaliser \u00ab&nbsp;ces externalit\u00e9s&nbsp;: dans le cas qui nous occupe, c\u2019est le r\u00f4le d\u00e9volu \u00e0 la taxe carbone. Elle est par exemple pr\u00e9conis\u00e9e par <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Olivier_Blanchard\" target=\"_blank\" rel=\"noreferrer noopener\">Olivier Blanchard<\/a> (chef \u00e9conomiste et directeur des \u00e9tudes au <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Fonds_mon%C3%A9taire_international\">Fonds mon\u00e9taire international<\/a> de 2008 \u00e0 2015) ou <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Jean_Tirole\" target=\"_blank\" rel=\"noreferrer noopener\">Jean Tirole<\/a> (prix Nobel d\u2019\u00e9conomie). Les m\u00eames proposent d\u2019utiliser une partie du produit de la taxe pour compenser le co\u00fbt pour les m\u00e9nages les plus modestes. Ils estiment aussi que la taxe doit \u00eatre augment\u00e9e progressivement, selon un calendrier annonc\u00e9 \u00e0 l\u2019avance et permettant aux acteurs de prendre des d\u00e9cisions \u00e9clair\u00e9es.<\/p>\n\n\n\n<p>L\u2019\u00c9tat peut aussi jouer sur deux autres leviers&nbsp;: la r\u00e9glementation (norme pour les nouvelles constructions ou interdiction de louer une passoire thermique par exemple) et les subventions (ma <a rel=\"noreferrer noopener\" href=\"https:\/\/www.maprimerenov.gouv.fr\/prweb\/PRAuth\/app\/AIDES_\/BPNVwCpLW8TKW49zoQZpAw*\/!STANDARD\" target=\"_blank\">Prim\u2019r\u00e9nov p<\/a>ar exemple, ou d\u00e9ductions fiscales).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9volution historique des \u00e9missions dues au logement<\/h2>\n\n\n\n<p>Les \u00e9missions de GES li\u00e9es au chauffage domestique, \u00e0 l\u2019eau chaude sanitaire et \u00e0 la cuisson (<a href=\"https:\/\/www.citepa.org\/fr\/donnees-emissions\/\" target=\"_blank\" rel=\"noreferrer noopener\">les statistiques<\/a> portent sur l\u2019ensemble) varient d\u2019une ann\u00e9e \u00e0 l\u2019autre en fonction de la plus ou moindre rigueur des hivers. L\u2019ensemble est clairement \u00e0 la baisse, ce qui montre qu\u2019il y bien un effet des op\u00e9rations d\u2019isolation. Le volume maximal a \u00e9t\u00e9 atteint en 2004 avec 66Mt CO2e \u00e9mises (plus de 60 Mt chaque ann\u00e9e de 1996 \u00e0 2006), puis le volume a baiss\u00e9, sous la barre des 50 Mt depuis 2014, avec un minimum \u00e0 41 Mt en 2019.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"886\" height=\"434\" src=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Chauffage-et-GES.png\" alt=\"\" class=\"wp-image-5881\" srcset=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Chauffage-et-GES.png 886w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Chauffage-et-GES-300x147.png 300w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Chauffage-et-GES-768x376.png 768w\" sizes=\"(max-width: 886px) 100vw, 886px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9l\u00e9ments de co\u00fbts utilis\u00e9s<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-medium is-resized\"><img decoding=\"async\" src=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Co\u00fbts-unitaires-isolation-300x193.png\" alt=\"\" class=\"wp-image-5882\" width=\"300\" height=\"193\" srcset=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Co\u00fbts-unitaires-isolation-300x193.png 300w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Co\u00fbts-unitaires-isolation.png 445w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><\/div>\n\n\n\n<p>J\u2019ai retenu deux tableaux, parmi ceux pr\u00e9sent\u00e9s dans la note. Le premier donne des \u00e9l\u00e9ments de co\u00fbts de r\u00e9novation : elle est \u00e0 multiplier par la surface de l\u2019enveloppe du logement. On comprend ais\u00e9ment que le co\u00fbt au m2 habitable puisse \u00eatre plus faible en collectif (puisque le rapport surface de l\u2019enveloppe\/surface du logement est plus faible). J\u2019imaginais des co\u00fbts plus \u00e9lev\u00e9s.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-medium\"><img decoding=\"async\" width=\"300\" height=\"182\" src=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Aides-\u00e0-lisolation-300x182.png\" alt=\"\" class=\"wp-image-5883\" srcset=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Aides-\u00e0-lisolation-300x182.png 300w, https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2022\/02\/Aides-\u00e0-lisolation.png 439w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><\/div>\n\n\n\n<p>Le deuxi\u00e8me tableau donne le taux de subvention. CEE signifie \u00ab<a href=\"https:\/\/www.ecologie.gouv.fr\/dispositif-des-certificats-deconomies-denergie\" target=\"_blank\" rel=\"noreferrer noopener\">&nbsp;certificats d\u2019\u00e9conomies d\u2019\u00e9nergie&nbsp;<\/a>\u00bb. Comme on le voit, tous les particuliers peuvent b\u00e9n\u00e9ficier d\u2019une aide, mais le taux de celle-ci d\u00e9pend de leurs revenus.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En d\u00e9cembre dernier, France Strat\u00e9gie a publi\u00e9 une note sur la rentabilit\u00e9 \u00e9conomique des r\u00e9novations \u00e9nerg\u00e9tiques des logements. La motivation de cette r\u00e9flexion est annonc\u00e9e d\u00e8s le d\u00e9but de la note&nbsp;: Afin de se conformer aux objectifs de la Strat\u00e9gie nationale bas carbone (SNBC), il s\u2019agirait, selonle Haut Conseil pour&#8230;<\/p>\n","protected":false},"author":11,"featured_media":5887,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-5879","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analyses","entry","simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Co\u00fbts de la r\u00e9novation \u00e9nerg\u00e9tique de logements - La Gazette<\/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:\/\/sceaux-lagazette.fr\/index.php\/2022\/02\/21\/couts-de-la-renovation-energetique-de-logements\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Co\u00fbts de la r\u00e9novation \u00e9nerg\u00e9tique de logements - La Gazette\" \/>\n<meta property=\"og:description\" content=\"En d\u00e9cembre dernier, France Strat\u00e9gie a publi\u00e9 une note sur la rentabilit\u00e9 \u00e9conomique des r\u00e9novations \u00e9nerg\u00e9tiques des logements. 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