{"id":18327,"date":"2024-03-19T09:25:01","date_gmt":"2024-03-19T01:25:01","guid":{"rendered":"https:\/\/battery9999.com\/fr\/?p=18327"},"modified":"2024-03-19T09:25:01","modified_gmt":"2024-03-19T01:25:01","slug":"en-finlande-une-batterie-de-sable-pour-conserver-lenergie-solaire-et-baisser-les-emissions-de-co2","status":"publish","type":"post","link":"https:\/\/battery9999.com\/fr\/en-finlande-une-batterie-de-sable-pour-conserver-lenergie-solaire-et-baisser-les-emissions-de-co2\/","title":{"rendered":"En Finlande, une “batterie de sable” pour conserver l’\u00e9nergie solaire (et baisser les \u00e9missions de CO2)"},"content":{"rendered":"

14\/03\/2024<\/p>\n

\"\"<\/p>\n

Confront\u00e9e \u00e0 des hivers rigoureux en raison de sa situation g\u00e9ographique pr\u00e8s du\u00a0Cercle polaire<\/a>\u00a0Arctique<\/a>, la Finlande est l’un des pays \u00e0 l’avant-garde des solutions technologiques en mati\u00e8re \u00e9nerg\u00e9tique. Son objectif actuel : se chauffer et conserver l’\u00e9nergie tout en luttant contre le\u00a0r\u00e9chauffement climatique<\/a>.<\/p>\n

Car les \u00e9nergies solaire et \u00e9olienne, consid\u00e9r\u00e9es comme capitales pour mener la transition \u00e9cologique, pr\u00e9sentent cependant des failles inh\u00e9rentes \u00e0 leur stockage. Pour rem\u00e9dier \u00e0 cela, dans le pays scandinave, l’entreprise Polar Night Energy a r\u00e9cemment lanc\u00e9 un dispositif \u00e0 base de sable pour conserver le surplus d’\u00e9nergie produite, comme l’a rapport\u00e9 le site\u00a0New Atlas<\/a>, ce mardi 12 mars.<\/p>\n

Une puissance d\u00e9cupl\u00e9e<\/h2>\n

Exp\u00e9riment\u00e9e en 2022, la batterie au sable sera d\u00e9sormais exploit\u00e9e \u00e0 l’\u00e9chelle industrielle et devrait g\u00e9n\u00e9rer une puissance dix fois sup\u00e9rieure au pr\u00e9c\u00e9dent projet, soit 1 m\u00e9gawatt (MW) pour 100 m\u00e9gawattheure (MWh). Une capacit\u00e9 \u00e0 m\u00eame de retenir la chaleur d’une ville pendant une semaine. La nouvelle technologie devrait mesurer 13 m\u00e8tres de hauteur et s’\u00e9tendre sur 15 m\u00e8tres.<\/p>\n

Le d\u00e9ploiement de ce dispositif b\u00e9n\u00e9ficiera \u00e0 la commune de Pornainen, situ\u00e9e dans le sud-est du pays, \u00e0 50 kilom\u00e8tres\u00a0d’Helsinki<\/a>, la capitale.<\/p>\n

Mais comment ce dispositif pr\u00e9sent\u00e9 comme\u00a0“r\u00e9volutionnaire”\u00a0<\/em>fonctionne-t-il ? Tout repose sur l’utilisation d’une cuve en acier. Ce mastodonte contient des centaines de tonnes de sable, une mati\u00e8re premi\u00e8re au co\u00fbt de production moins \u00e9lev\u00e9 que le cobalt ou le lithium. Ces minerais sont \u00e9galement point\u00e9s du doigt par les\u00a0ONG<\/a>, qui soulignent les d\u00e9g\u00e2ts environnementaux et sociaux caus\u00e9s par leur utilisation. Pr\u00e9sent en quantit\u00e9, le sable ne n\u00e9cessite pas les m\u00eames moyens d’extraction.<\/p>\n

Gains environnementaux<\/h2>\n

Dans les grands silos chauff\u00e9 \u00e0 plusieurs centaines de degr\u00e9s, il permet de conserver le surplus d’\u00e9lectricit\u00e9 g\u00e9n\u00e9r\u00e9 par les\u00a0panneaux solaires<\/a>, en \u00e9t\u00e9. Les ing\u00e9nieurs \u00e9voquent une temp\u00e9rature pouvant atteindre 500 degr\u00e9s pendant plusieurs mois. De quoi maintenir un halo de chaleur susceptible de s\u00e9duire le secteur industriel, contraint de revoir sa copie \u00e9nerg\u00e9tique dans le processus de production.<\/p>\n

Tous ces \u00e9l\u00e9ments concourent \u00e0 la r\u00e9duction des \u00e9missions de dioxyde de carbone (CO2<\/a>), gaz (parmi d’autres) responsable du\u00a0changement climatique<\/a>. Au total, 160 tonnes seraient ainsi \u00e9limin\u00e9es chaque ann\u00e9e en Finlande. \u00c0 l’\u00e9chelle, le d\u00e9veloppement de cette technologie g\u00e9n\u00e9rerait une baisse de 283 m\u00e9gatonnes de CO2, ce qui \u00e9quivaut \u00e0 pr\u00e8s de la moiti\u00e9 des \u00e9missions de carbone annuelles en France, rapportait une \u00e9tude du projet Mission Innovation. L’aboutissement du dispositif finlandais devrait se clore dans pr\u00e8s d’un an, selon Polar Night Energy.<\/p>\n

La source:En Finlande, une “batterie de sable” pour conserver l’\u00e9nergie solaire (et baisser les \u00e9missions de CO2) – Geo.fr<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

14\/03\/2024<\/p>\n","protected":false},"author":12,"featured_media":18310,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[795],"tags":[],"class_list":["post-18327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-industrielles"],"yoast_head":"\nEn Finlande, une "batterie de sable" pour conserver l'\u00e9nergie solaire (et baisser les \u00e9missions de CO2) - \u660c\u8467\u80a1\u4efd\u6709\u9650\u516c\u53f8<\/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:\/\/battery9999.com\/fr\/en-finlande-une-batterie-de-sable-pour-conserver-lenergie-solaire-et-baisser-les-emissions-de-co2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"En Finlande, une "batterie de sable" pour conserver l'\u00e9nergie solaire (et baisser les \u00e9missions de CO2) - 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