{"id":21579,"date":"2025-06-12T16:59:58","date_gmt":"2025-06-12T16:59:58","guid":{"rendered":"https:\/\/www.ern.org\/?page_id=21579"},"modified":"2026-02-06T07:44:34","modified_gmt":"2026-02-06T07:44:34","slug":"romanche-archive-fonctionnement","status":"publish","type":"page","link":"https:\/\/www.ern.org\/fr\/romanche-archive-fonctionnement\/","title":{"rendered":"Romanche archive fonctionnement"},"content":{"rendered":"<div  class='flex_column av-mh3uzml-2d51a2e590f656626eeb6c56a57dd447 av_two_third  avia-builder-el-0  el_before_av_one_third  avia-builder-el-first  first flex_column_div  '     ><section  class='av_textblock_section av-ly2gs0t-ab797f0b13e1a8b7b5dceb5ee69227e1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h2><a name=\"historique\"><\/a>HISTORY AND HIGHLIGHTS OF THE ROMANCHE PROJECT<\/h2>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-119g7ct-1d5aac15bbdd89e095426d2cc1828093\">\n#top .hr.hr-invisible.av-119g7ct-1d5aac15bbdd89e095426d2cc1828093{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-119g7ct-1d5aac15bbdd89e095426d2cc1828093 hr-invisible  avia-builder-el-2  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  id=\"sechilienne\"  class='av_textblock_section av-q0pqbh-ed50a442634f179315636038d10232e1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4><\/h4>\n<h3>&gt;&gt; Timeline of the main stages, decisions, and highlights of the decommissioning of the S\u00e9chilienne Dam<\/h3>\n<h3><strong>2009<\/strong><\/h3>\n<p>The French State acquired all the structures related to the operation of the Noyer Chut hydroelectric plant, including the intake canal and the S\u00e9chilienne dam, as part of the risk prevention measures related to landslides on the ruins of S\u00e9chilienne and to address the need to restore the ecological continuity of the river.<\/p>\n<h3>Between 2010 and 2013<\/h3>\n<p>The first phases of decommissioning were launched. The Is\u00e8re Departmental Directorate of Territories (DDT) demolished the Noyer Chut hydroelectric plant, filled in the intake canal, and removed the two segments of the S\u00e9chilienne dam&rsquo;s water level control gates, as they were no longer producing electricity and posed a risk of accidental closure.<\/p>\n<h3><strong>2016<\/strong><\/h3>\n<p>In June, the environmental authority of the General Council for the Environment and Sustainable Development (CGEDD) issued its opinion on the project for the final dismantling of the dam. It emphasized that the main objective was to restore the ecological continuity of the Romanche River, notably by removing the weir and unnecessary ancillary structures. The opinion also highlighted environmental issues such as the free movement of fish, impacts on flood flow, and sediment transport.<\/p>\n<h3><strong>2018<\/strong><\/h3>\n<p>The dam dismantling work is complete.<\/p>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l6yj17h-ef671385f0d22a0d3affc5f7025f1222\">\n.flex_column.av-l6yj17h-ef671385f0d22a0d3affc5f7025f1222{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-l6yj17h-ef671385f0d22a0d3affc5f7025f1222 av_one_third  avia-builder-el-4  el_after_av_two_third  el_before_av_two_third  flex_column_div av-zero-column-padding  '     ><p><div  class='avia-button-wrap av-2366071-a9385e373cad637977dec304b332e01f-wrap avia-button-center  avia-builder-el-5  el_before_av_button  avia-builder-el-first '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2366071-a9385e373cad637977dec304b332e01f\">\n#top #wrap_all .avia-button.av-2366071-a9385e373cad637977dec304b332e01f:hover{\ncolor:white;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-2366071-a9385e373cad637977dec304b332e01f:hover .avia-svg-icon svg:first-child{\nfill:white;\nstroke:white;\n}\n<\/style>\n<a href='https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/Factsheet_Romanche_ERN_juin2025.pdf'  class='avia-button av-2366071-a9385e373cad637977dec304b332e01f av-link-btn avia-icon_select-no avia-size-large avia-position-center avia-color-green avia-font-color-theme-color'   aria-label=\"Factsheet, may 2025 - in French\"><span class='avia_iconbox_title' >Factsheet, may 2025 - in French<\/span><span class='avia_button_background avia-button avia-color-theme-color-highlight' ><\/span><\/a><\/div><br \/>\n<div  class='avia-button-wrap av-jerivh9-b0329dcc5e288341c68a06b369203eff-wrap avia-button-center  avia-builder-el-6  el_after_av_button  el_before_av_hr '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jerivh9-b0329dcc5e288341c68a06b369203eff\">\n#top #wrap_all .avia-button.av-jerivh9-b0329dcc5e288341c68a06b369203eff:hover{\ncolor:white;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-jerivh9-b0329dcc5e288341c68a06b369203eff:hover .avia-svg-icon svg:first-child{\nfill:white;\nstroke:white;\n}\n<\/style>\n<a href='https:\/\/www.ern.org\/en\/romanche-reconfiguration-et-effacements\/'  class='avia-button av-jerivh9-b0329dcc5e288341c68a06b369203eff av-link-btn avia-icon_select-no avia-size-large avia-position-center avia-color-theme-color avia-font-color-theme-color'   aria-label=\"Romanche homepage\"><span class='avia_iconbox_title' >Romanche homepage<\/span><span class='avia_button_background avia-button avia-color-theme-color-highlight' ><\/span><\/a><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mbjhdy0f-6ca9f7aaca81923b84c6687585fb0253\">\n#top .hr.hr-invisible.av-mbjhdy0f-6ca9f7aaca81923b84c6687585fb0253{\nheight:80px;\n}\n<\/style>\n<div  class='hr av-mbjhdy0f-6ca9f7aaca81923b84c6687585fb0253 hr-invisible  avia-builder-el-7  el_after_av_button  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-1dbu2p7-51645219acfbd743a9f97bb6b1407f91 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h5>The S\u00e9chilienne dam<\/h5>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/05\/Timeline-Sechilienne.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/05\/Timeline-Sechilienne.png\" alt=\"\" width=\"1186\" height=\"535\" \/><\/a><\/p>\n<p>\u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<h5><\/h5>\n<p>&#8211; Commissioned: 1917<br \/>\n&#8211; End of service: 1946<br \/>\n&#8211; Dismantled: 2018<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mcyi59-2e23fa0bbd16b27f04193840f7ecac8c\">\n#top .hr.hr-invisible.av-mcyi59-2e23fa0bbd16b27f04193840f7ecac8c{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-mcyi59-2e23fa0bbd16b27f04193840f7ecac8c hr-invisible  avia-builder-el-9  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-11idpfh-3100d948ceebbd78415d95569e2ba23c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/renat-VF.png\" width=\"783\" height=\"482\" \/><br \/>\nRenaturation of the Romanche valley \u00a9Roberto EPPLE<\/p>\n<h5><\/h5>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-40hbjbx-968cb4694417dede87490099d06bceb2 av_two_third  avia-builder-el-11  el_after_av_one_third  el_before_av_one_third  first flex_column_div  column-top-margin'     ><section  id=\"romanche\"  class='av_textblock_section av-33e1b0d-691a3c2912bc0a035b9072e2364759c6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4><\/h4>\n<h3>&gt;&gt; Chronology of the major stages, decisions, and highlights of the dam and power plant developments of the Romanche-Gavet project<\/h3>\n<h3><strong>2001<\/strong><\/h3>\n<p>In 2001, EDF wished to renew the concession for the power plant chain between Gavet and Livet. Two options were considered: modernizing the six existing structures or reconfiguring the entire project. After careful analysis, the reconfiguration option was chosen.<\/p>\n<h3>2010<\/h3>\n<p>The Romanche-Gavet project is part of the \u00ab\u00a0Commitment Agreement for the Development of Sustainable Hydropower in Coherence with the Restoration of Aquatic Environments\u00a0\u00bb signed by EDF in June 2010 as part of the Grenelle Environment Forum.<\/p>\n<p>On December 31, the Official Journal published the decree awarding EDF the concession for the future Romanche-Gavet hydroelectric power plant for a period of 60 years. In the spring, construction work on the Gavet hydroelectric power plant began.<\/p>\n<h3><strong>2012<\/strong><\/h3>\n<p>Construction of the Livet water intake dam begins.<\/p>\n<h3><strong>2013<\/strong><\/h3>\n<p>A rockslide on the construction site interrupts work. Geological studies and safety measures were carried out before resuming operations.<\/p>\n<h3><strong>2015<\/strong><\/h3>\n<p>Work resumes after safety measures. Construction of the Livet water intake dam is completed.<\/p>\n<h3><strong>2020<\/strong><\/h3>\n<p>In the spring, the six old power plants cease operation. On October 9, the entire new Romanche-Gavet hydroelectric facility is officially inaugurated and commissioned.<\/p>\n<h3><strong>2021<\/strong><\/h3>\n<p>In April, deconstruction work begins on the old hydroelectric infrastructure in the Romanche Valley.<\/p>\n<h3><strong>2024<\/strong><\/h3>\n<p>The complete deconstruction of the hydroelectric structures is completed.<\/p>\n<\/div><\/section><\/div><\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2fbclp9-fc6d5ca16b1e1b016613e254d66ef072\">\n.flex_column.av-2fbclp9-fc6d5ca16b1e1b016613e254d66ef072{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2fbclp9-fc6d5ca16b1e1b016613e254d66ef072 av_one_third  avia-builder-el-13  el_after_av_two_third  el_before_av_hr  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-tp6osr-0beace4c9dc3b9daa5c80925beaca69b\">\n#top .hr.hr-invisible.av-tp6osr-0beace4c9dc3b9daa5c80925beaca69b{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-tp6osr-0beace4c9dc3b9daa5c80925beaca69b hr-invisible  avia-builder-el-14  el_before_av_textblock  avia-builder-el-first '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-mbti81jo-d4a518c4b1af09ec3553fb15748eeab2 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h5>Photos of the valley and the dismantled structures<\/h5>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/pierre-eybesse-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/pierre-eybesse-VF.png\" alt=\"\" width=\"1280\" height=\"575\" \/><\/a>Comparison of aerial views ofPierre-Eybesse \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/riouperoux-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/riouperoux-VF.png\" alt=\"\" width=\"1281\" height=\"572\" \/><\/a>Comparison of aerial views ofRioup\u00e9roux \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/infernet-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/infernet-VF.png\" alt=\"\" width=\"1278\" height=\"577\" \/><\/a>Comparison of aerial views ofInfernet \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/robert-vf.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/robert-vf.png\" alt=\"\" width=\"1279\" height=\"575\" \/><\/a><br \/>\nComparison of aerial views ofRoberts \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/livet-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/livet-VF.png\" alt=\"\" width=\"1278\" height=\"577\" \/><\/a><br \/>\nComparison of aerial views of Livet \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<h5><\/h5>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-135z731-afef0552ca613f9ab00b49ffe3c164ea\">\n#top .hr.hr-invisible.av-135z731-afef0552ca613f9ab00b49ffe3c164ea{\nheight:40px;\n}\n<\/style>\n<div  class='hr av-135z731-afef0552ca613f9ab00b49ffe3c164ea hr-invisible  avia-builder-el-16  el_after_av_one_third  el_before_av_one_full '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2gn5pkt-028f4b40cf9fec7ef996694f7329eb2a\">\n.flex_column.av-2gn5pkt-028f4b40cf9fec7ef996694f7329eb2a{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2gn5pkt-028f4b40cf9fec7ef996694f7329eb2a av_one_full  avia-builder-el-17  el_after_av_hr  el_before_av_hr  first flex_column_div av-zero-column-padding  '     ><div  class='avia-button-wrap av-29w8urh-b43f4612cd4e37586b9df011f17d7bb4-wrap avia-button-center  avia-builder-el-18  avia-builder-el-no-sibling '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-29w8urh-b43f4612cd4e37586b9df011f17d7bb4\">\n#top #wrap_all .avia-button.av-29w8urh-b43f4612cd4e37586b9df011f17d7bb4:hover{\ncolor:white;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-29w8urh-b43f4612cd4e37586b9df011f17d7bb4:hover .avia-svg-icon svg:first-child{\nfill:white;\nstroke:white;\n}\n<\/style>\n<a href='https:\/\/www.ern.org\/romanche-reconfiguration-et-effacements\/'  class='avia-button av-29w8urh-b43f4612cd4e37586b9df011f17d7bb4 av-link-btn avia-icon_select-no avia-size-large avia-position-center avia-color-theme-color avia-font-color-theme-color'   aria-label=\"Romanche homepage\"><span class='avia_iconbox_title' >Romanche homepage<\/span><span class='avia_button_background avia-button avia-color-theme-color-highlight' ><\/span><\/a><\/div><\/div>\n<div  class='hr av-l6xau5-281b207f6abb8d47867fe19c7175fc70 hr-default  avia-builder-el-19  el_after_av_one_full  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-21579","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/21579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/comments?post=21579"}],"version-history":[{"count":0,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/21579\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/media?parent=21579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}