{"id":14864,"date":"2024-05-22T07:24:37","date_gmt":"2024-05-22T05:24:37","guid":{"rendered":"https:\/\/cubeconcepts.de\/?p=14864"},"modified":"2026-06-01T13:57:09","modified_gmt":"2026-06-01T11:57:09","slug":"le-black-out-un-defi-pour-les-energies-renouvelables","status":"publish","type":"post","link":"https:\/\/cubeconcepts.de\/fr\/dunkelflaute-herausforderung-fuer-erneuerbare-energien\/","title":{"rendered":"Dunkelflaute\u00a0: ce que cela signifie et comment y rem\u00e9dier"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><em>(Mis \u00e0 jour en avril 2026)<\/em> La soi-disant <strong>P\u00e9riode sombre<\/strong> est consid\u00e9r\u00e9e comme l'un des plus grands d\u00e9fis de la transition \u00e9nerg\u00e9tique. Elle d\u00e9crit une situation m\u00e9t\u00e9orologique o\u00f9 <strong>simultan peu de vent souffle et peu d'\u00e9nergie solaire est disponible<\/strong> \u2013 donc pr\u00e9cis\u00e9ment au moment o\u00f9 les \u00e9nergies renouvelables fournissent tr\u00e8s peu d'\u00e9lectricit\u00e9. Elle est donc l'exact oppos\u00e9 d'une <a href=\"https:\/\/cubeconcepts.de\/fr\/enferbrise\/\" type=\"post\" id=\"23390\">Enfer-brise<\/a>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mais quel est le v\u00e9ritable enjeu de la p\u00e9riode de bas vent et quelles sont les solutions ?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu'est-ce qu'une p\u00e9riode de faible production d'\u00e9nergies renouvelables ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une p\u00e9riode de calme noir est une phase au cours de laquelle :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>peu d'\u00e9nergie \u00e9olienne est produite (calme plat)<\/strong><\/li>\n\n\n\n<li><strong>when little or no solar energy is available (e.g. at night or during heavy cloud cover)<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Suivi : La production d'\u00e9lectricit\u00e9 \u00e0 partir d'installations \u00e9oliennes et photovolta\u00efques peut, sur <strong>moins de 2 % de puissance install\u00e9e<\/strong> couler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Typiquement, de telles situations surviennent surtout en hiver et elles peuvent <strong>plusieurs jours \u00e0 plus d'une semaine<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Existe-t-il une d\u00e9finition officielle ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Non, une d\u00e9finition uniforme n'existe pas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Selon le point de vue:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00e9v\u00e9nements fr\u00e9quents courts<\/strong>plusieurs fois par an<\/li>\n\n\n\n<li><strong>phases critiques prolong\u00e9es (&gt; 1 semaine)<\/strong>: environ tous les 5 \u00e0 10 ans<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour le secteur de l'\u00e9nergie, surtout <strong>pannes de courant prolong\u00e9es et \u00e0 forte demande<\/strong> pertinent.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi le calme noir est-il un probl\u00e8me ?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. D\u00e9ficit d'approvisionnement dans le syst\u00e8me \u00e9lectrique<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Quand l'\u00e9lectricit\u00e9 \u00e9olienne et solaire \u00e9chouent simultan\u00e9ment :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>le besoin augmente de <strong>Capacit\u00e9s de sauvegarde<\/strong><\/li>\n\n\n\n<li>doit bri\u00e8vement s'\u00e9lectriser <strong>import\u00e9 ou conventionnellement produit<\/strong> seront<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Prix de l'\u00e9lectricit\u00e9 \u00e9lev\u00e9s<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Une offre limit\u00e9e entra\u00eene :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>les prix croissants de l'\u00e9lectricit\u00e9 sur les march\u00e9s<\/li>\n\n\n\n<li>co\u00fbts plus \u00e9lev\u00e9s pour les entreprises<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Les \u00e9missions de CO\u2082 augmentent \u00e0 court terme<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sans alternatives suffisantes\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utilisation de <strong>centrales \u00e0 gaz ou \u00e0 charbon<\/strong><\/li>\n\n\n\n<li>Conflit d'objectifs pour la neutralit\u00e9 climatique<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Stabilit\u00e9 du r\u00e9seau sous pression<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>exigences plus \u00e9lev\u00e9es en mati\u00e8re de gestion du r\u00e9seau et de puissance de r\u00e9serve<\/li>\n\n\n\n<li>La conservation de la fr\u00e9quence devient plus difficile<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Qu'est-ce qu'une \u201e d\u00e9pression froide et sombre \u201c ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une forme particuli\u00e8rement critique est <strong>calme plat froid et sombre<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>se produit le plus souvent en hiver<\/li>\n\n\n\n<li>combin\u00e9 <strong>Faible production d'\u00e9lectricit\u00e9 avec une forte consommation<\/strong><\/li>\n\n\n\n<li>par exemple, en raison des besoins de chauffage et de la production industrielle<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette situation soumet le syst\u00e8me \u00e9nerg\u00e9tique \u00e0 une charge maximale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment r\u00e9soudre la p\u00e9riode de calme plat ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La bonne nouvelle : il existe bien <strong>aucune solution unique<\/strong>, mais un ensemble efficace de mesures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Expansion du r\u00e9seau et interconnexion europ\u00e9enne<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9veloppement de <strong>Transport \u00e0 courant continu haute tension (CCAT)<\/strong><\/li>\n\n\n\n<li>Transport d'\u00e9lectricit\u00e9 sur de longues distances<\/li>\n\n\n\n<li>Compensation des diff\u00e9rences m\u00e9t\u00e9orologiques r\u00e9gionales<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exemple : l'\u00e9nergie \u00e9olienne d'Europe du Nord compense les calmes en Europe centrale.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Les accumulateurs d'\u00e9nergie, une technologie cl\u00e9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e9moires \u00e0 court terme :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Syst\u00e8me de stockage d'\u00e9nergie par batteries (BESS)<\/li>\n\n\n\n<li>id\u00e9al pour des heures \u00e0 plusieurs jours<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Stockage \u00e0 long terme :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Centrales de pompage-turbinage<\/li>\n\n\n\n<li>Stockage par gravit\u00e9 et cavit\u00e9s de stockage d'air comprim\u00e9<\/li>\n\n\n\n<li>Hydrog\u00e8ne (Power-to-Gas)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Objectif : stocker les exc\u00e9dents et les r\u00e9cup\u00e9rer pendant les p\u00e9riodes de vaches maigres<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Centrales de secours flexibles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">actuellement : flexible <strong>Centrales \u00e0 gaz<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">perspectivement<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Centrales \u00e0 hydrog\u00e8ne<\/li>\n\n\n\n<li>Biomasse<\/li>\n\n\n\n<li>G\u00e9othermie<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Important : puissance rapidement r\u00e9glable<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Couplage des secteurs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/cubeconcepts.de\/fr\/le-couplage-des-secteurs-pour-des-concepts-energetiques-globaux\/\" type=\"post\" id=\"17823\">Couplage de secteurs<\/a> est la liaison de :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Strom<\/li>\n\n\n\n<li>Chaleur<\/li>\n\n\n\n<li>Mobilit\u00e9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exemples :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Contr\u00f4ler les pompes \u00e0 chaleur de mani\u00e8re flexible<\/li>\n\n\n\n<li>Charger les v\u00e9hicules \u00e9lectriques de mani\u00e8re cibl\u00e9e<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L'\u00e9nergie est optimis\u00e9e de mani\u00e8re trans-syst\u00e8me.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Flexibilisation de la demande d'\u00e9lectricit\u00e9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les entreprises peuvent contribuer activement :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cubeconcepts.de\/fr\/decalage-de-charge-avec-bess\/\">D\u00e9placement de la charge<\/a> Gestion de la demande<\/li>\n\n\n\n<li>Utilisation des tarifs d'\u00e9lectricit\u00e9 dynamiques<\/li>\n\n\n\n<li>Ajustement des temps de production<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La consommation d'\u00e9lectricit\u00e9 suit la production, pas l'inverse<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Alimentation \u00e9nerg\u00e9tique d\u00e9centralis\u00e9e<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u00e2timents photovolta\u00efques sur les toits des entreprises<\/li>\n\n\n\n<li>Batterie de stockage sur site<\/li>\n\n\n\n<li>Combinaison avec <a href=\"https:\/\/cubeconcepts.de\/fr\/produits\/cube-efficiencyunit\/\" type=\"page\" id=\"18381\">Syst\u00e8mes de gestion de l'\u00e9nergie<\/a> (EMS)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela r\u00e9duit la d\u00e9pendance au r\u00e9seau et stabilise le syst\u00e8me global.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. L'hydrog\u00e8ne comme stockage \u00e0 long terme<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Central \u00e0 long terme :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stockage de grandes quantit\u00e9s d'\u00e9nergie<\/li>\n\n\n\n<li>Utilisation de l'infrastructure gazi\u00e8re existante<\/li>\n\n\n\n<li>R\u00e9tro-alimentation \u00e0 la demande<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Potentiel : S\u00e9curiser l'approvisionnement sur des semaines ou des mois<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quel r\u00f4le jouent les entreprises dans les p\u00e9riodes de faible production d'\u00e9nergie renouvelable ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les entreprises sont un \u00e9l\u00e9ment essentiel de la solution :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Autoconsommation avec <strong>PV + stockage<\/strong><\/li>\n\n\n\n<li>Participation \u00e0 <strong>march\u00e9s de flexibilit\u00e9<\/strong><\/li>\n\n\n\n<li>R\u00e9duction des pics de charge<\/li>\n\n\n\n<li>Int\u00e9gration dans les syst\u00e8mes \u00e9nerg\u00e9tiques intelligents<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R\u00e9sultat :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Contribution \u00e0 la stabilit\u00e9 du r\u00e9seau<\/li>\n\n\n\n<li>r\u00e9duire les co\u00fbts de l'\u00e9lectricit\u00e9<\/li>\n\n\n\n<li>s\u00e9curit\u00e9 d'approvisionnement accrue<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion : La stagnation par temps sombre est r\u00e9soluble \u2013 mais seulement syst\u00e9mique<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La \"Dunkelflaute\" n'est pas un obstacle insurmontable, mais une <strong>d\u00e9fi planifiable<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un syst\u00e8me \u00e9nerg\u00e9tique stable de l'avenir repose sur :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>les \u00e9nergies renouvelables<\/li>\n\n\n\n<li>Enregistrer<\/li>\n\n\n\n<li>aux consommateurs flexibles<\/li>\n\n\n\n<li>infrastructure de r\u00e9seau intelligente<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La synergie de tous les composants est d\u00e9cisive.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour les entreprises, cela signifie que celles qui investissent aujourd'hui dans une alimentation \u00e9nerg\u00e9tique flexible s'assurent des avantages \u00e9conomiques et r\u00e9duisent les risques sur un march\u00e9 de l'\u00e9nergie de plus en plus volatile.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Qu'est-ce qu'une p\u00e9riode de faible production d'\u00e9nergies renouvelables ?<\/summary>\n<p class=\"wp-block-paragraph\">Une p\u00e9riode de calme sombre est une situation m\u00e9t\u00e9orologique dans laquelle il y a peu de vent et peu d'\u00e9nergie solaire disponible en m\u00eame temps. Cela entra\u00eene une forte baisse de la production d'\u00e9lectricit\u00e9 \u00e0 partir d'\u00e9nergies renouvelables.<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u00c0 quelle fr\u00e9quence se produit une p\u00e9riode de faible irradiation solaire ?<\/summary>\n<p class=\"wp-block-paragraph\">De courtes p\u00e9riodes de faible production d'\u00e9nergie \u00e9olienne surviennent plusieurs fois par an. Des p\u00e9riodes plus longues et critiques de tr\u00e8s faible production d'\u00e9lectricit\u00e9, durant plusieurs jours, surviennent en moyenne tous les 5 \u00e0 10 ans.<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Combien de temps dure une p\u00e9riode de calme relatif ?<\/summary>\n<p class=\"wp-block-paragraph\">La dur\u00e9e peut varier consid\u00e9rablement :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>longues p\u00e9riodes de faible luminosit\u00e9 : jusqu'\u00e0 7 \u00e0 10 jours ou plus<\/li>\n\n\n\n<li>\u00e9v\u00e9nements courts : 1 \u00e0 3 jours<\/li>\n<\/ul>\n<\/details>\n<\/details>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Pourquoi la p\u00e9riode de faible production d'\u00e9nergie solaire est-elle probl\u00e9matique ?<\/summary>\n<p class=\"wp-block-paragraph\">Pendant une p\u00e9riode de calme sans vent (dunkelflaute), la production d'\u00e9lectricit\u00e9 \u00e0 partir d'installations \u00e9oliennes et solaires chute fortement. Dans le m\u00eame temps, la demande d'\u00e9lectricit\u00e9 persiste, voire augmente, ce qui entra\u00eene:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>des prix de l'\u00e9lectricit\u00e9 plus \u00e9lev\u00e9s<\/li>\n\n\n\n<li>peut entra\u00eener une augmentation du besoin en centrales de secours.<\/li>\n\n\n\n<li>les \u00e9missions croissantes de CO\u2082<\/li>\n<\/ul>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Comment surmonter une p\u00e9riode de pluviom\u00e9trie sans soleil ?<\/summary>\n<p class=\"wp-block-paragraph\">Pour combler le foss\u00e9, plusieurs mesures sont combin\u00e9es :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Batteriespeicher und Pumpspeicher <\/li>\n\n\n\n<li>Hydrog\u00e8ne comme stockage \u00e0 long terme <\/li>\n\n\n\n<li>centrales \u00e9lectriques \u00e0 gaz flexibles <\/li>\n\n\n\n<li>r\u00e9seaux \u00e9lectriques europ\u00e9ens <\/li>\n\n\n\n<li>Gestion de la demande et consommateurs flexibles<\/li>\n<\/ul>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Quel r\u00f4le jouent les entreprises dans les p\u00e9riodes de faible production d'\u00e9nergie renouvelable ?<\/summary>\n<p class=\"wp-block-paragraph\">Les entreprises peuvent contribuer activement \u00e0 la r\u00e9solution par :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utilisation <a href=\"https:\/\/cubeconcepts.de\/fr\/tarifs-delectricite-dynamiques\/\" type=\"post\" id=\"21612\">tarifs d'\u00e9lectricit\u00e9 dynamiques<\/a><\/li>\n\n\n\n<li>Autoconsommation avec photovolta\u00efque et stockage par batterie<\/li>\n\n\n\n<li>Gestion de la demande<\/li>\n<\/ul>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>La \"calamit\u00e9 sombre\" (Dunkelflaute) arr\u00eatera-t-elle la transition \u00e9nerg\u00e9tique ?<\/summary>\n<p class=\"wp-block-paragraph\">Non. Les p\u00e9riodes de faible production d'\u00e9nergie renouvelable (le \"dunkelflaute\" en allemand) sont consid\u00e9r\u00e9es comme un d\u00e9fi r\u00e9soluble. Par le d\u00e9veloppement du stockage, des r\u00e9seaux et des syst\u00e8mes \u00e9nerg\u00e9tiques flexibles, la s\u00e9curit\u00e9 d'approvisionnement peut \u00eatre garantie m\u00eame avec les \u00e9nergies renouvelables.<\/p>\n<\/details>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/cubeconcepts.de\/fr\/savoir\/fachbeitraege\/\">Retour \u00e0 l'aper\u00e7u<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Quand le calme plat rencontre la couverture nuageuse, le syst\u00e8me \u00e9lectrique est sous pression \u2013 mais la \"dunkelflaute\" (p\u00e9riode sans vent et sans soleil) n'est plus un probl\u00e8me insoluble. Les entreprises, en particulier, peuvent contribuer activement \u00e0 la stabilit\u00e9 du r\u00e9seau par leur propre approvisionnement avec des syst\u00e8mes de stockage photovolta\u00efque et par leur participation aux march\u00e9s de flexibilit\u00e9, tout en s\u00e9curisant leurs propres co\u00fbts \u00e9nerg\u00e9tiques.<\/p>","protected":false},"author":3,"featured_media":14867,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,61,25],"tags":[],"class_list":["post-14864","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-batteriespeicher","category-grundlagen-technik","category-photovoltaik"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Dunkelflaute erkl\u00e4rt: Bedeutung, Risiken &amp; L\u00f6sungen | CUBE CONCEPTS<\/title>\n<meta name=\"description\" content=\"Was ist eine Dunkelflaute? 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