{"id":57068,"date":"2026-09-29T16:06:48","date_gmt":"2026-09-29T15:06:48","guid":{"rendered":"https:\/\/ecoforest.com\/?p=57068"},"modified":"2026-09-29T16:06:48","modified_gmt":"2026-09-29T15:06:48","slug":"geothermie-verticale-ou-horizontale-en-espagne-autorisations-couts-et-criteres-de-choix","status":"publish","type":"post","link":"https:\/\/ecoforest.com\/fr\/nouvelles\/geothermie-verticale-ou-horizontale-en-espagne-autorisations-couts-et-criteres-de-choix\/","title":{"rendered":"G\u00e9othermie verticale ou horizontale en Espagne : autorisations, co\u00fbts et crit\u00e8res de choix"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">La <strong class=\"\">g\u00e9othermie<\/strong> s\u2019impose comme l\u2019une des solutions les plus efficaces pour le chauffage et la climatisation des logements et des b\u00e2timents en Espagne. Toutefois, avant d\u2019installer une pompe \u00e0 chaleur g\u00e9othermique, une \u00e9tape essentielle consiste \u00e0 choisir entre un syst\u00e8me <strong class=\"\">vertical<\/strong> et un syst\u00e8me <strong class=\"\">horizontal<\/strong>, car chacun pr\u00e9sente des exigences techniques, r\u00e9glementaires et \u00e9conomiques diff\u00e9rentes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans ce guide complet, nous examinons les <strong class=\"\">autorisations<\/strong> et les <strong class=\"\">co\u00fbts actualis\u00e9s pour 2025<\/strong>, puis vous proposons une <strong class=\"\">liste de crit\u00e8res claire pour choisir<\/strong> la meilleure solution pour votre projet.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. G\u00e9othermie horizontale : conditions et exigences<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Le captage horizontal consiste \u00e0 <strong class=\"\">enterrer des tuyaux \u00e0 une profondeur de 1,2\u20132 m<\/strong>, dispos\u00e9s en serpentin ou en spirale, sur une surface de terrain <strong class=\"\">deux fois sup\u00e9rieure \u00e0 la surface \u00e0 chauffer et \u00e0 climatiser<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong class=\"\">Terrain n\u00e9cessaire<\/strong> : au moins 400\u2013600 m\u00b2 de surface libre pour une maison individuelle de taille moyenne.<\/li>\n\n\n\n<li><strong class=\"\">Caract\u00e9ristiques du sol<\/strong> : plus il est humide et argileux, meilleure est sa conductivit\u00e9.<\/li>\n\n\n\n<li><strong class=\"\">Restrictions<\/strong> : ne pas planter d\u2019arbres \u00e0 racines profondes ni recouvrir de b\u00e9ton la zone des tranch\u00e9es.<\/li>\n\n\n\n<li><strong class=\"\">Co\u00fbt en 2025<\/strong> : entre <strong class=\"\">8.000\u201312.000 \u20ac<\/strong> pour une maison standard (<a href=\"https:\/\/ecoforest.com\/fr\/nouvelles\/profondeur-geothermique\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ecoforest<\/a>).<\/li>\n\n\n\n<li><strong class=\"\">Avantage<\/strong> : une installation moins co\u00fbteuse si l\u2019espace disponible est suffisant.<\/li>\n\n\n\n<li><strong class=\"\">Inconv\u00e9nient<\/strong> : des performances l\u00e9g\u00e8rement inf\u00e9rieures, sensibles aux variations saisonni\u00e8res de la temp\u00e9rature du sol.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. G\u00e9othermie verticale : forage en profondeur<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Le syst\u00e8me de captage vertical utilise des <strong class=\"\">forages de 50\u2013150 m<\/strong> de profondeur \u00e9quip\u00e9s de sondes g\u00e9othermiques, avec un remplissage \u00e0 base de bentonite et de ciment pour garantir le contact thermique.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong class=\"\">Espace n\u00e9cessaire<\/strong> : au moins <strong class=\"\">10 m\u00b2 par forage<\/strong> pour permettre sa r\u00e9alisation.<\/li>\n\n\n\n<li><strong class=\"\">Performances<\/strong> : plus stables (30\u201370 W\/m selon la conductivit\u00e9 du sol).<\/li>\n\n\n\n<li><strong class=\"\">Co\u00fbt en 2025<\/strong> : entre <strong class=\"\">15.000\u201325.000 \u20ac<\/strong> pour une maison individuelle de taille moyenne (<a href=\"https:\/\/ecoforest.com\/fr\/nouvelles\/profondeur-geothermique\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ecoforest<\/a>).<\/li>\n\n\n\n<li><strong class=\"\">Dur\u00e9e des travaux<\/strong> : 5\u20137 jours de forage, 3\u20134 semaines au total pour les projets r\u00e9sidentiels (<a href=\"https:\/\/ecoforest.com\/fr\/nouvelles\/installation-geothermique-dans-les-logements-guide-complet-2025-pour-lespagne-le-portugal-et-litalie\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ecoforest<\/a>).<\/li>\n\n\n\n<li><strong class=\"\">Avantage<\/strong> : occupe peu d\u2019espace et convient aux petites parcelles en zone urbaine.<\/li>\n\n\n\n<li><strong class=\"\">Inconv\u00e9nient<\/strong> : un investissement initial plus \u00e9lev\u00e9 et la n\u00e9cessit\u00e9 d\u2019obtenir des autorisations de forage.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">3. Autorisations et r\u00e9glementation en Espagne (2025)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Les d\u00e9marches d\u00e9pendent du type d\u2019installation :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong class=\"\">Horizontale<\/strong> : une <strong class=\"\">autorisation pour travaux mineurs<\/strong> suffit g\u00e9n\u00e9ralement.<\/li>\n\n\n\n<li><strong class=\"\">Verticale<\/strong> : elle n\u00e9cessite un <strong class=\"\">rapport g\u00e9otechnique<\/strong> et la d\u00e9claration du forage aupr\u00e8s de l\u2019organisme r\u00e9gional charg\u00e9 des mines ou de l\u2019\u00e9nergie. En pratique, tout forage de plus de 30 m doit faire l\u2019objet d\u2019un enregistrement officiel (loi 22\/1973), et une distance minimale par rapport aux fondations et aux arbres peut \u00eatre exig\u00e9e (\u22651,5\u20132 m) (<a href=\"https:\/\/ecoforest.com\/fr\/nouvelles\/profondeur-geothermique\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ecoforest<\/a>).<\/li>\n\n\n\n<li><strong class=\"\">Subventions<\/strong> : l\u2019IDAE et les programmes r\u00e9gionaux proposent des aides pouvant atteindre 4.000 \u20ac (horizontale) et 7.000 \u20ac (verticale).<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">4. Co\u00fbts CAPEX et OPEX en 2025<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Poste<\/th><th>Horizontale<\/th><th>Verticale<\/th><\/tr><\/thead><tbody><tr><td>Investissement moyen<\/td><td>8.000\u201312.000 \u20ac<\/td><td>15.000\u201325.000 \u20ac<\/td><\/tr><tr><td>Entretien annuel<\/td><td>~150 \u20ac<\/td><td>~300 \u20ac<\/td><\/tr><tr><td>SCOP typique<\/td><td>3,8\u20134,3<\/td><td>4,5\u20135,0<\/td><\/tr><tr><td>Amortissement avec aides<\/td><td>8\u201310 ans<\/td><td>10\u201312 ans<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pour <strong class=\"\">une maison individuelle \u00e0 Bilbao \u00e9quip\u00e9e d\u2019un syst\u00e8me vertical de 18.000 \u20ac, avec une \u00e9conomie annuelle de 1.200 \u20ac \u2192 retour sur investissement \u2248 12 ans<\/strong> (<a href=\"https:\/\/ecoforest.com\/fr\/nouvelles\/profondeur-geothermique\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ecoforest<\/a>).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">5. Crit\u00e8res de choix : verticale ou horizontale ?<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2705 <strong class=\"\">Choisissez la g\u00e9othermie horizontale<\/strong> si\u2026\n<ul class=\"wp-block-list\">\n<li>Votre parcelle est grande (>500 m\u00b2 de surface libre).<\/li>\n\n\n\n<li>Vous privil\u00e9giez un co\u00fbt initial moins \u00e9lev\u00e9.<\/li>\n\n\n\n<li>Les restrictions d\u2019utilisation du terrain ne vous d\u00e9rangent pas (ne pas planter d\u2019arbres \u00e0 racines profondes).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u2705 <strong class=\"\">Choisissez la g\u00e9othermie verticale<\/strong> si\u2026\n<ul class=\"wp-block-list\">\n<li>Vous disposez de peu d\u2019espace ou votre logement se trouve en zone urbaine.<\/li>\n\n\n\n<li>Vous recherchez des performances saisonni\u00e8res maximales et stables tout au long de l\u2019ann\u00e9e.<\/li>\n\n\n\n<li>Vous souhaitez une dur\u00e9e de vie sup\u00e9rieure (sondes >50 ans).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">6. Conclusion<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">En Espagne, en 2025, le choix entre <strong class=\"\">g\u00e9othermie verticale et horizontale<\/strong> repose sur trois facteurs : <strong class=\"\">l\u2019espace disponible, le budget initial et les exigences r\u00e9glementaires applicables \u00e0 la parcelle<\/strong>. Les deux solutions permettent de r\u00e9aliser 60\u201375 % d\u2019\u00e9conomies sur le chauffage et la climatisation, mais la <strong class=\"\">g\u00e9othermie verticale garantit de meilleures performances et une plus grande stabilit\u00e9<\/strong>, sans les contraintes de surface propres \u00e0 la g\u00e9othermie horizontale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour approfondir vos connaissances sur cette technologie, nous vous recommandons de lire notre article de r\u00e9f\u00e9rence : <a href=\"https:\/\/ecoforest.com\/fr\/pompe-chaleur\/geothermie\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong class=\"\">Pompes \u00e0 chaleur g\u00e9othermiques : une solution efficace et respectueuse de l\u2019environnement<\/strong><\/a>. Et si vous souhaitez d\u00e9couvrir des cas concrets, consultez notre rubrique consacr\u00e9e aux <a href=\"https:\/\/ecoforest.com\/fr\/?p=34684\" target=\"_blank\" rel=\"noreferrer noopener\"><strong class=\"\">projets g\u00e9othermiques d\u2019Ecoforest<\/strong><\/a>, o\u00f9 nous pr\u00e9sentons des installations aussi bien verticales qu\u2019horizontales.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La g\u00e9othermie s\u2019impose comme l\u2019une des solutions les plus efficaces pour le chauffage et la climatisation des logements et des b\u00e2timents en Espagne. Toutefois, avant d\u2019installer une pompe \u00e0 chaleur g\u00e9othermique, une \u00e9tape essentielle consiste \u00e0 choisir entre un syst\u00e8me vertical et un syst\u00e8me horizontal, car chacun pr\u00e9sente des exigences techniques, r\u00e9glementaires et \u00e9conomiques diff\u00e9rentes. [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":48797,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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