{"id":6661,"date":"2026-07-15T15:29:07","date_gmt":"2026-07-15T19:29:07","guid":{"rendered":"https:\/\/www.direxyon.com\/?p=6661"},"modified":"2026-07-15T15:29:08","modified_gmt":"2026-07-15T19:29:08","slug":"depenses-capital-redondantes","status":"publish","type":"post","link":"https:\/\/www.direxyon.com\/fr\/depenses-capital-redondantes\/","title":{"rendered":"\u00c9viter les d\u00e9penses en capital redondantes entre r\u00e9seaux voisins"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>Deux r\u00e9seaux voisins, planifiant chacun de fa\u00e7on isol\u00e9e, renforcent deux fois le m\u00eame corridor. La duplication reste invisible tant que vous ne mod\u00e9lisez pas les deux syst\u00e8mes comme un seul.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les services publics planifient leurs r\u00e9seaux \u00e0 l&#8217;image des fronti\u00e8res r\u00e9glementaires : une juridiction \u00e0 la fois. C&#8217;est une fa\u00e7on raisonnable de g\u00e9rer une entreprise r\u00e9glement\u00e9e. Mais elle gaspille de l&#8217;argent d&#8217;une mani\u00e8re que personne ne voit. Deux syst\u00e8mes voisins, chacun planifiant prudemment, finissent par <strong>renforcer le m\u00eame corridor, d\u00e9tenir la m\u00eame redondance, construire vers le m\u00eame pic. Deux fois.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Personne n&#8217;agit de fa\u00e7on irrationnelle. Chaque plan est solide selon ses propres termes. Mais le gaspillage n&#8217;appara\u00eet que lorsqu&#8217;on prend du recul et qu&#8217;on mod\u00e9lise les actifs pour ce qu&#8217;ils sont physiquement : un seul syst\u00e8me interconnect\u00e9, et non deux portefeuilles qui se touchent.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">La fiabilit\u00e9 comporte une surd\u00e9pense cach\u00e9e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La planification isol\u00e9e pousse les r\u00e9seaux vers la surassurance. Si vous ne pouvez compter sur la capacit\u00e9 d&#8217;un voisin, vous construisez assez de la v\u00f4tre pour ne jamais en avoir besoin. Rationnel, actif par actif. Mais multipliez cette prudence sur chaque fronti\u00e8re d&#8217;une r\u00e9gion, et vous obtenez un investissement de fiabilit\u00e9 r\u00e9el, d\u00e9fendable et en partie redondant. L&#8217;actif n&#8217;est pas exactement gaspill\u00e9. Il duplique plut\u00f4t une capacit\u00e9 qui existe d\u00e9j\u00e0 de l&#8217;autre c\u00f4t\u00e9 d&#8217;une ligne administrative, et non physique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La redondance est difficile \u00e0 voir parce qu&#8217;elle r\u00e9side l\u00e0 o\u00f9 personne ne regarde. Les planificateurs de chaque r\u00e9seau peuvent d\u00e9fendre chaque ligne de leur programme, car dans leur propre cadre, chaque ligne r\u00e9pond \u00e0 une \u00e9ventualit\u00e9 cr\u00e9dible. La duplication ne se trouve donc dans aucun des deux plans. Elle se trouve entre deux plans qui ne se sont jamais retrouv\u00e9s sur la m\u00eame table, sous une norme d&#8217;\u00e9ventualit\u00e9 commune. Le cas le plus clair est <strong>le cas fronti\u00e8re N-1<\/strong> : deux syst\u00e8mes adjacents d\u00e9tiennent chacun une capacit\u00e9 ferme pour couvrir la perte d&#8217;une interconnexion partag\u00e9e, alors qu&#8217;une seule r\u00e9serve coordonn\u00e9e s\u00e9curiserait les deux. Aucune revue interne ne le d\u00e9tectera jamais, car aucune revue interne n&#8217;examine l&#8217;ensemble d&#8217;\u00e9ventualit\u00e9s combin\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Deux choses rendent cela plus difficile \u00e0 ignorer. D&#8217;abord, les r\u00e9gulateurs. La barre de prudence atteint d\u00e9sormais le cadrage du plan, et non seulement les projets qu&#8217;il contient. Donc <strong>\u00ab nous n&#8217;avons pas mod\u00e9lis\u00e9 le r\u00e9seau voisin \u00bb devient une r\u00e9ponse difficile \u00e0 donner<\/strong>. Ensuite, la d\u00e9carbonation est un probl\u00e8me r\u00e9gional. Le chemin le moins co\u00fbteux sur le cycle de vie vers un r\u00e9seau plus propre traverse les fronti\u00e8res juridictionnelles : interconnexion partag\u00e9e, flexibilit\u00e9 mise en commun, capacit\u00e9 coordonn\u00e9e. Car la ressource renouvelable et la demande qu&#8217;elle dessert ne respectent pas les lignes sur la carte.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Lattice-transmission-towers-spanning-a-cleared-right-of-way-1024x683.png\" alt=\"Lattice steel transmission towers carrying high-voltage lines along a cleared corridor between forested edges\" class=\"wp-image-6665\" srcset=\"https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Lattice-transmission-towers-spanning-a-cleared-right-of-way-1024x683.png 1024w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Lattice-transmission-towers-spanning-a-cleared-right-of-way-300x200.png 300w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Lattice-transmission-towers-spanning-a-cleared-right-of-way-768x512.png 768w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Lattice-transmission-towers-spanning-a-cleared-right-of-way-600x400.png 600w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Lattice-transmission-towers-spanning-a-cleared-right-of-way.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">La question difficile \u00e0 r\u00e9pondre et co\u00fbteuse \u00e0 ignorer<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La question que les dirigeants commencent \u00e0 poser : combien de capital pourrions-nous \u00e9viter en planifiant \u00e0 l&#8217;\u00e9chelle r\u00e9gionale plut\u00f4t qu&#8217;une juridiction \u00e0 la fois?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Y r\u00e9pondre exige un vrai travail. Il faut une mod\u00e9lisation multir\u00e9gionale, une analyse partag\u00e9e de l&#8217;\u00e9coulement de charge et de la stabilit\u00e9, puis une \u00e9valuation conjointe du co\u00fbt de production et des \u00e9ventualit\u00e9s sur des territoires qui ne partagent pas de plan aujourd&#8217;hui. Ensuite, vous traduisez le r\u00e9sultat en investissement \u00e9vit\u00e9 en valeur actuelle. En pratique, vous simulez la circulation de l&#8217;\u00e9nergie dans un r\u00e9seau combin\u00e9, selon une norme de s\u00e9curit\u00e9 commune et une gamme de sc\u00e9narios de demande et de production. Et vous attribuez un chiffre cr\u00e9dible \u00e0 la redondance que la coordination \u00e9limine. Cette exigence analytique explique pr\u00e9cis\u00e9ment pourquoi personne ne pose la question.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mais ne pas la poser a aussi un co\u00fbt : un programme d&#8217;investissement discr\u00e8tement plus grand qu&#8217;il n&#8217;a besoin de l&#8217;\u00eatre, justifi\u00e9 par l&#8217;\u00e9troitesse de son cadre. Chaque interface o\u00f9 deux r\u00e9seaux surconstruisent l&#8217;un contre l&#8217;autre est <strong>une capacit\u00e9 que les clients financent deux fois<\/strong>. Sur une r\u00e9gion comptant de nombreuses interfaces, le chiffre est rarement petit. Et il s&#8217;accro\u00eet \u00e0 chaque cycle de planification qui traite la fronti\u00e8re comme un mur plut\u00f4t qu&#8217;une couture.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">La coordination n&#8217;est pas une fusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La planification r\u00e9gionale ne signifie pas renoncer \u00e0 l&#8217;autonomie. <strong>Aucune propri\u00e9t\u00e9 partag\u00e9e, aucune salle de commande fusionn\u00e9e, aucun bilan unique.<\/strong> Elle signifie plut\u00f4t pouvoir simuler des sc\u00e9narios de collaboration, interconnexions, partage de capacit\u00e9, coordination du calendrier des grands chantiers, et attribuer un chiffre d\u00e9fendable \u00e0 la valeur syst\u00e9mique avant de couler le b\u00e9ton.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C&#8217;est une discipline de <a href=\"https:\/\/www.direxyon.com\/fr\/ressources\/quest-ce-que-la-planification-des-investissements-dans-les-actifs\/\">gestion d&#8217;actifs<\/a> appliqu\u00e9e \u00e0 une fronti\u00e8re plus large. Le principe qui met en garde contre l&#8217;optimisation d&#8217;un seul actif isol\u00e9 s&#8217;applique directement \u00e0 des r\u00e9seaux entiers : le choix optimal pour un actif peut \u00eatre mauvais pour le syst\u00e8me qui l&#8217;entoure. De m\u00eame, un renforcement optimal pour une juridiction peut \u00eatre redondant une fois le plan du voisin sur la table et la r\u00e9serve mise en commun. Optimisez donc le programme, pas les parties.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Transmission-corridor-running-to-the-horizon-across-forested-terrain-1024x576.png\" alt=\"Aerial view of a transmission corridor running straight to the horizon across forested terrain\" class=\"wp-image-6667\" srcset=\"https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Transmission-corridor-running-to-the-horizon-across-forested-terrain-1024x576.png 1024w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Transmission-corridor-running-to-the-horizon-across-forested-terrain-300x169.png 300w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Transmission-corridor-running-to-the-horizon-across-forested-terrain-768x432.png 768w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Transmission-corridor-running-to-the-horizon-across-forested-terrain-1536x864.png 1536w, https:\/\/www.direxyon.com\/wp-content\/uploads\/2026\/07\/Transmission-corridor-running-to-the-horizon-across-forested-terrain.png 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Alors, comment chiffrer la coordination?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le but n&#8217;est pas de planifier comme une seule entit\u00e9. C&#8217;est de cesser de planifier comme si les voisins n&#8217;existaient pas. Autrement dit, remplacer l&#8217;hypoth\u00e8se d&#8217;isolement, qui gonfle silencieusement chaque programme d&#8217;investissement r\u00e9gional, par une analyse explicite de ce que vaut la coordination.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Comment Direxyon y parvient. <\/strong>Direxyon rend l&#8217;arbitrage transfrontalier explicite gr\u00e2ce \u00e0 un cadre d\u00e9cisionnel fond\u00e9 sur la valeur, structur\u00e9 autour de l&#8217;analyse d\u00e9cisionnelle multicrit\u00e8re. Le cadre \u00e9value la capacit\u00e9 de part et d&#8217;autre d&#8217;une interface selon les m\u00eames dimensions : risque, niveau de service, co\u00fbt total, valeur de report. Vous pouvez donc classer une r\u00e9serve coordonn\u00e9e face \u00e0 deux r\u00e9serves isol\u00e9es sur une seule \u00e9chelle tra\u00e7able. Et ce classement tient devant un r\u00e9gulateur ou un r\u00e9seau voisin, parce qu&#8217;il montre chaque hypoth\u00e8se et documente chaque arbitrage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La <a href=\"https:\/\/www.direxyon.com\/fr\/direxyon-enterprise\/\">simulation de Monte-Carlo<\/a> chiffre la valeur de la coordination sur de multiples sc\u00e9narios de demande, de production et de p\u00e9n\u00e9tration des RED. Par cons\u00e9quent, l&#8217;avantage en valeur actuelle d&#8217;une r\u00e9serve coordonn\u00e9e n&#8217;arrive pas sous la forme d&#8217;un chiffre unique qui attend d&#8217;\u00eatre contest\u00e9. Il arrive sous celle d&#8217;<strong>une fourchette d\u00e9fendable, assortie d&#8217;intervalles de confiance<\/strong>, construite \u00e0 partir des contraintes physiques des deux r\u00e9seaux mod\u00e9lis\u00e9s ensemble.<\/p>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\"><em>C&#8217;est la troisi\u00e8me des cinq questions strat\u00e9giques que nous approfondissons dans Viser juste, notre analyse 2026 de l&#8217;investissement en capital pour les <a href=\"https:\/\/www.direxyon.com\/fr\/electrique\/\">r\u00e9seaux \u00e9lectriques<\/a>. Le chapitre pr\u00e9sente l&#8217;approche de mod\u00e9lisation multir\u00e9gionale des flux et de la production, un exemple d&#8217;interface d\u00e9taill\u00e9 qui quantifie le renforcement \u00e9vit\u00e9 selon une norme d&#8217;\u00e9ventualit\u00e9 commune, et l&#8217;effet de la planification interr\u00e9gionale sur les tarifs que paient les clients.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2192 Lire le livre blanc : <a href=\"https:\/\/www.direxyon.com\/fr\/ressources\/turning-whitepaper-data-into-smarter-investments\/\">VISER JUSTE : Des investissements pour un r\u00e9seau \u00e9lectrique plus fiable, plus r\u00e9silient et plus efficient<\/a><\/strong><\/p>\n<\/div>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"h-questions-frequemment-posees\" class=\"wp-block-heading\">Questions fr\u00e9quemment pos\u00e9es <\/h2>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\"><\/div>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div id=\"bk-tag-block_90937bcb20132cdfe3e4c5a479f955a5\" class=\"bk-accordion bk-tag-container\">\n    <div class=\"archipel-accordion\">\n                    <div class=\"accordion-item\">\n                <label>La planification r\u00e9gionale signifie-t-elle fusionner les r\u00e9seaux?<\/label>                <div class=\"accordion__content\">\n\n<p class=\"wp-block-paragraph\">Non. Elle n&#8217;exige aucune propri\u00e9t\u00e9 partag\u00e9e, salle de commande ni bilan commun. Il suffit de mod\u00e9liser ensemble les r\u00e9seaux voisins et de chiffrer la valeur de la coordination.<\/p>\n\n<\/div>\n            <\/div>\n            <\/div><!-- .accordion -->\n<\/div>\n\n\n\n<div id=\"bk-tag-block_cccbb5c1c0309f0f37f2cf502d5ff470\" class=\"bk-accordion bk-tag-container\">\n    <div class=\"archipel-accordion\">\n                    <div class=\"accordion-item\">\n                <label>O\u00f9 se cache la d\u00e9pense redondante?<\/label>                <div class=\"accordion__content\">\n\n<p class=\"wp-block-paragraph\">Entre deux plans qui ne se sont jamais retrouv\u00e9s sur la m\u00eame table. Chaque plan est d\u00e9fendable seul; le d\u00e9doublement n&#8217;appara\u00eet que lorsqu&#8217;on mod\u00e9lise les deux comme un seul syst\u00e8me.<\/p>\n\n<\/div>\n            <\/div>\n            <\/div><!-- .accordion -->\n<\/div>\n\n\n\n<div id=\"bk-tag-block_e292934a1307ffec06b4dea7bbe8496f\" class=\"bk-accordion bk-tag-container\">\n    <div class=\"archipel-accordion\">\n                    <div class=\"accordion-item\">\n                <label>Qu&#8217;est-ce que le cas fronti\u00e8re N-1?<\/label>                <div class=\"accordion__content\">\n\n<p class=\"wp-block-paragraph\">Deux syst\u00e8mes adjacents d\u00e9tiennent chacun une capacit\u00e9 ferme pour couvrir la perte d&#8217;une interconnexion partag\u00e9e, alors qu&#8217;une seule r\u00e9serve coordonn\u00e9e pourrait s\u00e9curiser les deux.<\/p>\n\n<\/div>\n            <\/div>\n            <\/div><!-- .accordion -->\n<\/div>\n\n\n\n<div id=\"bk-tag-block_a052ef78e63648ec207dbac658c4396c\" class=\"bk-accordion bk-tag-container\">\n    <div class=\"archipel-accordion\">\n                    <div class=\"accordion-item\">\n                <label>Comment calcule-t-on la valeur de la coordination? <\/label>                <div class=\"accordion__content\">\n\n<p class=\"wp-block-paragraph\">Par simulation de Monte-Carlo sur plusieurs sc\u00e9narios de demande, de production et de p\u00e9n\u00e9tration des RED, les deux r\u00e9seaux \u00e9tant mod\u00e9lis\u00e9s ensemble. Le r\u00e9sultat est une fourchette en valeur actuelle, assortie d&#8217;intervalles de confiance, plut\u00f4t qu&#8217;un chiffre unique contestable.<\/p>\n\n<\/div>\n            <\/div>\n            <\/div><!-- .accordion -->\n<\/div>\n\n\n\n<div id=\"bk-tag-block_65627fbc8e508ab42b5edc6a82f9b9fa\" class=\"bk-accordion bk-tag-container\">\n    <div class=\"archipel-accordion\">\n                    <div class=\"accordion-item\">\n                <label>La planification coordonn\u00e9e affaiblit-elle la fiabilit\u00e9? <\/label>                <div class=\"accordion__content\">\n\n<p class=\"wp-block-paragraph\">Non. Les deux syst\u00e8mes respectent la m\u00eame norme de s\u00e9curit\u00e9, comme le N-1, mais on mod\u00e9lise l&#8217;ensemble d&#8217;\u00e9ventualit\u00e9s conjointement. La fiabilit\u00e9 reste constante; la coordination \u00e9limine seulement la duplication.<\/p>\n\n<\/div>\n            <\/div>\n            <\/div><!-- .accordion -->\n<\/div>\n\n\n\n<div id=\"bk-tag-block_b076acb868a337c18d1122e83f5b7fd2\" class=\"bk-accordion bk-tag-container\">\n    <div class=\"archipel-accordion\">\n                    <div class=\"accordion-item\">\n                <label>Pourquoi les r\u00e9gulateurs s&#8217;int\u00e9ressent-ils \u00e0 la coordination r\u00e9gionale?  <\/label>                <div class=\"accordion__content\">\n\n<p class=\"wp-block-paragraph\">La barre de prudence atteint d\u00e9sormais le cadrage du plan, et non seulement les projets qu&#8217;il contient. Une d\u00e9pense qu&#8217;un cadre plus large aurait \u00e9vit\u00e9e devient difficile \u00e0 d\u00e9fendre. Et les clients financent deux fois la capacit\u00e9 dupliqu\u00e9e.<\/p>\n\n<\/div>\n            <\/div>\n            <\/div><!-- .accordion -->\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Deux r\u00e9seaux, un corridor, deux fois le capital. O\u00f9 se cache la d\u00e9pense redondante et comment chiffrer la coordination.<\/p>\n","protected":false},"author":23,"featured_media":6669,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":"[]"},"categories":[52],"tags":[],"class_list":["post-6661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogue"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>D\u00e9penses en capital redondantes et coordination r\u00e9gionale | Direxyon Technologies<\/title>\n<meta name=\"description\" content=\"Deux r\u00e9seaux voisins b\u00e2tissent deux fois la m\u00eame capacit\u00e9. 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