{"id":533,"date":"2018-11-15T00:00:00","date_gmt":"2018-11-14T23:00:00","guid":{"rendered":"https:\/\/blog.deepki.com\/2018\/11\/15\/detection-economies-energie-3-methodes\/"},"modified":"2022-09-09T15:18:51","modified_gmt":"2022-09-09T13:18:51","slug":"detection-economies-energie-3-methodes","status":"publish","type":"post","link":"https:\/\/www.deepki.com\/fr\/blog\/detection-economies-energie-3-methodes\/","title":{"rendered":"D\u00e9tection et mesure d\u2019\u00e9conomies d\u2019\u00e9nergie : 3 m\u00e9thodes efficaces qui s\u2019offrent \u00e0 vous"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-weight: bold; color: #000000;\"><span class=\"dropcap\">\u00c0<\/span><strong> l\u2019origine de 23% des \u00e9missions de CO2 en France, le b\u00e2timent est aujourd\u2019hui le secteur le plus \u00e9nergivore. \u00c0 lui seul, il constitue un gisement important de r\u00e9duction des \u00e9missions de gaz \u00e0 effet de serre. Le Gouvernement a d\u2019ailleurs mis en place plusieurs r\u00e9glementations comme <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/audit-energetique-obligatoire-ou\/\" target=\"_blank\" rel=\"noopener noreferrer\">l\u2019audit \u00e9nerg\u00e9tique r\u00e9glementaire<\/a>, le bilan carbone et le <a style=\"color: #000000;\" href=\"https:\/\/www.decret-tertiaire.fr\/\" target=\"_blank\" rel=\"noopener noreferrer\">d\u00e9cret tertiaire<\/a>. Quand peut-on r\u00e9ellement parler <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/glossaire\/economie-denergie\/\" target=\"_blank\" rel=\"noopener noreferrer\">d\u2019\u00e9conomies d\u2019\u00e9nergie<\/a> et comment les mesure-t-on ? D\u00e9finition et pr\u00e9sentation de 3 m\u00e9thodes de calcul utilis\u00e9es pour \u00e9valuer les gains r\u00e9alis\u00e9s dans le cadre d\u2019une d\u00e9marche de <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/5-questions-programme-performance-energetique\/\" target=\"_blank\" rel=\"noopener noreferrer\">performance \u00e9nerg\u00e9tique<\/a>.<\/strong><\/span><\/p>\n<h2><span style=\"color: #000000;\"><strong>Qu\u2019est-ce qu\u2019une \u00e9conomie d\u2019\u00e9nergie ?<\/strong><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">La notion <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/8-etapes-identifier-economies-denergies-comparant-batiments-entre-eux\/\" target=\"_blank\" rel=\"noopener noreferrer\">d\u2019\u00e9conomie d\u2019\u00e9nergie<\/a> d\u00e9signe une <strong>diminution constat\u00e9e<\/strong> de la consommation \u00e9nerg\u00e9tique d\u2019un b\u00e2timent. Si l\u2019\u00e9nergie est mesur\u00e9e en kilowattheure (kWh), une \u00e9conomie d\u2019\u00e9nergie est le plus souvent exprim\u00e9e sur une base annuelle, soit en kWh\/an, soit en \u20ac\/an.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Pour calculer les \u00e9conomies d\u2019\u00e9nergie, on utilise <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/glossaire\/lipmvp\/\" target=\"_blank\" rel=\"noopener noreferrer\">le protocole IPMVP<\/a> (International Performance Measurement and Verification Protocol) d\u00e9velopp\u00e9 au niveau international par EVO et reconnu en France par l\u2019ADEME. Selon ce protocole, une \u00e9conomie d\u2019\u00e9nergie correspond \u00e0 <strong>la diff\u00e9rence entre la consommation de r\u00e9f\u00e9rence ajust\u00e9e et la consommation mesur\u00e9e.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Dans le graphique ci-dessous, on peut visualiser l\u2019\u00e9conomie d\u2019\u00e9nergie r\u00e9alis\u00e9e apr\u00e8s une <strong>action de performance \u00e9nerg\u00e9tique<\/strong> (APE). Les 4 variables agissant sur la consommation \u00e9nerg\u00e9tique d\u2019un b\u00e2timent doivent \u00eatre prises en compte dans les calculs <strong>(type d\u2019\u00e9nergie, niveau d\u2019isolation, qualit\u00e9 des \u00e9quipements et usage par les utilisateurs).<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-5547\" src=\"https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2020\/05\/mesurer-des-economies-denergie.png\" alt=\"Trois m\u00e9thodes pour mesurer des \u00e9conomies d'\u00e9nergie\" width=\"1059\" height=\"447\"><\/span><\/p>\n<h2><span style=\"color: #000000;\"><strong>3 m\u00e9thodes efficaces utilis\u00e9es pour d\u00e9tecter et calculer les \u00e9conomies d\u2019\u00e9nergie<\/strong><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Dans toute d\u00e9marche d\u2019am\u00e9lioration \u00e9nerg\u00e9tique, il est n\u00e9cessaire de pouvoir <strong>mesurer les gains de performance r\u00e9alis\u00e9s<\/strong>. Selon les donn\u00e9es disponibles en entr\u00e9e, diff\u00e9rentes m\u00e9thodes de calcul peuvent \u00eatre utilis\u00e9es, toutes r\u00e9f\u00e9renc\u00e9es par <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/cest-quoi-ipmvp\/\" target=\"_blank\" rel=\"noopener noreferrer\">le protocole IPMVP<\/a>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Outre les informations li\u00e9es \u00e0 l\u2019activit\u00e9 et au patrimoine immobilier, on choisira la m\u00e9thode \u00e0 appliquer en fonction de la disponibilit\u00e9 de 3 <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/data-management-bonnes-donnees-bon-usage\/\" target=\"_blank\" rel=\"noopener noreferrer\">types de donn\u00e9es<\/a> :<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\"><strong>les factures d\u2019\u00e9nergie<\/strong> provenant des fournisseurs ;<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>les donn\u00e9es de t\u00e9l\u00e9rel\u00e8ve<\/strong> enregistr\u00e9es par les gestionnaires de distribution d\u2019\u00e9nergie et prestataires ;<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>les renseignements fournis<\/strong> sur les \u00e9quipements, notamment par les syst\u00e8mes de gestion de la maintenance assist\u00e9e par ordinateur (GMAO).<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><em>*Dans le cadre des m\u00e9thodes 1 et 2, on applique des <strong>coefficients de prudence<\/strong> ou <strong>coefficients de correction<\/strong> pour compenser les erreurs de projections.<\/em><\/span><\/p>\n<h3><span style=\"color: #000000;\">M\u00e9thode 1 : lorsqu\u2019on poss\u00e8de tr\u00e8s peu de donn\u00e9es\u2026<\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Quand on ne dispose que des <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/glossaire\/factures-energetiques\/\" target=\"_blank\" rel=\"noopener noreferrer\">factures<\/a> (donn\u00e9es les plus faciles \u00e0 obtenir), on commence par faire des hypoth\u00e8ses sur le type d\u2019\u00e9quipement pouvant pr\u00e9senter des anomalies. Il s\u2019agit ici de d\u00e9terminer les <strong>coefficients de performance anormaux<\/strong> (par exemple une consommation surfacique \u00e9lev\u00e9e) puis de comparer le site consid\u00e9r\u00e9 avec des sites similaires au regard de cet indicateur. On utilise \u00e9galement des m\u00e9thodes statistiques descriptives et de <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/clustering-donnees\/\" target=\"_blank\" rel=\"noopener noreferrer\">clustering<\/a> pour comparer les KPI : le gain r\u00e9alis\u00e9 correspondra \u00e0 la diff\u00e9rence entre le KPI actuel et le KPI th\u00e9orique apr\u00e8s r\u00e9solution du probl\u00e8me et application des pr\u00e9conisations (par exemple l\u2019extinction d\u2019un chauffage la nuit, etc.).<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Si l\u2019on d\u00e9tient des donn\u00e9es relatives aux \u00e9quipements, la d\u00e9marche consiste \u00e0 chercher l\u2019\u00e9quipement probl\u00e9matique gr\u00e2ce aux KPI afin de pouvoir \u00e9mettre des hypoth\u00e8ses sur le <strong>fonctionnement actuel<\/strong> par rapport \u00e0 un <strong>fonctionnement normal<\/strong>. C\u2019est la diff\u00e9rence entre ces deux hypoth\u00e8ses qui permet de calculer le gain obtenu.<\/span><\/p>\n<h3><span style=\"color: #000000;\">M\u00e9thode 2 : l\u2019approche d\u2019apprentissage sur les courbes de t\u00e9l\u00e9rel\u00e8ve<\/span><\/h3>\n<p><span style=\"color: #000000;\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-5548\" src=\"https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2020\/05\/courbe-de-te\u0301le\u0301rele\u0300ve.png\" alt=\"mesurer des \u00e9conomies d'\u00e9nergie sur une courbe de t\u00e9l\u00e9rel\u00e8ve\" width=\"1124\" height=\"390\"><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">En l\u2019absence d\u2019informations sur les \u00e9quipements, l\u2019approche d\u2019apprentissage sur les <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/courbes-de-charges-vous\/\" target=\"_blank\" rel=\"noopener noreferrer\">courbes de t\u00e9l\u00e9rel\u00e8ve<\/a> dans le secteur concern\u00e9 permet d\u2019identifier une <strong>anomalie sur l\u2019amplitude de consommation journali\u00e8re<\/strong> ou sur le <strong>talon de consommation nocturne<\/strong>. Apr\u00e8s identification de l\u2019anomalie, on \u00e9chafaude un sc\u00e9nario de comportement normal : c\u2019est l\u2019aire comprise entre la <strong>courbe existante<\/strong> et la <strong>courbe th\u00e9orique<\/strong> recalcul\u00e9e qui indique l\u2019\u00e9nergie \u00e9conomis\u00e9e.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Avec la liste des \u00e9quipements, il est facile de d\u00e9terminer une d\u00e9faillance en \u00e9tudiant l\u2019\u00e9cart entre la <strong>puissance atteinte sur la t\u00e9l\u00e9rel\u00e8ve<\/strong> et la <strong>puissance calcul\u00e9e \u00e0 partir du fichier d\u2019inventaire<\/strong> des \u00e9quipements. On peut ainsi d\u00e9terminer des hypoth\u00e8ses de dysfonctionnements\u2026 et les corriger.<\/span><\/p>\n<h3><span style=\"color: #000000;\">M\u00e9thode 3 : le recours \u00e0 un algorithme pr\u00e9dictif<\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Quand on poss\u00e8de des donn\u00e9es issues de la t\u00e9l\u00e9rel\u00e8ve et des informations sur les \u00e9quipements, on peut utiliser un <a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/budget-energie-algorithme\/\" target=\"_blank\" rel=\"noopener noreferrer\">algorithme pr\u00e9dictif<\/a> capable de <strong>d\u00e9tecter des anomalies types<\/strong> sur ce type d\u2019\u00e9quipement. Cette m\u00e9thode permet de mettre en place un apprentissage \u00e0 grande \u00e9chelle (<a style=\"color: #000000;\" href=\"https:\/\/www.deepki.com\/fr\/blog\/regles-machine-learning-foncieres-rse\/\" target=\"_blank\" rel=\"noopener noreferrer\">machine learning<\/a>) sur l\u2019ensemble des points de comptage d\u2019un client ou d\u2019un secteur, et de d\u00e9terminer des allures de courbes sp\u00e9cifiques. \u00c0 partir des habitudes de consommation fournies par le client, on peut \u00e9tablir <strong>une carte d\u2019identit\u00e9 de chaque mod\u00e8le<\/strong> (pattern) et les regrouper en clusters pour les analyser.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Dans ce cas, il est encore n\u00e9cessaire d\u2019\u00e9mettre des hypoth\u00e8ses sur l\u2019\u00e9quipement concern\u00e9 afin de mettre en place un plan d\u2019action op\u00e9rationnel. Les gains r\u00e9alis\u00e9s correspondent \u00e0 la somme des \u00e9carts entre l\u2019<strong>allure observ\u00e9e<\/strong> et l\u2019<strong>allure caract\u00e9ristique<\/strong> de ce type de site.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Quelle que soit la m\u00e9thode IPMVP utilis\u00e9e, il faut garder en t\u00eate que le gain \u00e9nerg\u00e9tique calcul\u00e9 est plus ou moins pr\u00e9cis selon les donn\u00e9es d\u2019entr\u00e9e fournies. Quand on a peu de donn\u00e9es, il est n\u00e9cessaire d\u2019utiliser des coefficients de prudence pour \u00e9viter de pr\u00e9senter un gain trop \u00e9loign\u00e9 de la r\u00e9alit\u00e9. Une \u00e9conomie d\u2019\u00e9nergie doit \u00eatre consid\u00e9r\u00e9e comme une donn\u00e9e ponctuelle destin\u00e9e \u00e0 am\u00e9liorer la performance \u00e9nerg\u00e9tique de l\u2019entreprise. Son calcul permet d\u2019avoir une vision du budget \u00e0 long terme et d\u2019\u00e9valuer un retour sur investissement. Si le gain \u00e9nerg\u00e9tique est modifiable en fonction du type de donn\u00e9es d\u2019entr\u00e9e recueillies, il est d\u00e9conseill\u00e9 de le r\u00e9\u00e9valuer apr\u00e8s \u00e9laboration des hypoth\u00e8ses dans la mesure o\u00f9 certains facteurs ont pu changer entre-temps (occupation du b\u00e2timent, climat, type d\u2019\u00e9quipement pr\u00e9conis\u00e9 en remplacement\u2026).<\/strong><\/span><\/p>\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/content.deepki.com\/hubfs\/1.FRANCE\/PDF\/FR_Primonial_Case_Study%20(1).pdf\"><img decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2022\/09\/CTA_FR_case_study_Primonial.png\" alt=\"\" class=\"wp-image-68854\" srcset=\"https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2022\/09\/CTA_FR_case_study_Primonial.png 960w, https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2022\/09\/CTA_FR_case_study_Primonial-300x169.png 300w, https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2022\/09\/CTA_FR_case_study_Primonial-768x432.png 768w, https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2022\/09\/CTA_FR_case_study_Primonial-80x45.png 80w, https:\/\/www.deepki.com\/web\/wp-content\/uploads\/2022\/09\/CTA_FR_case_study_Primonial-260x146.png 260w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 l\u2019origine de 23% des \u00e9missions de CO2 en France, le b\u00e2timent est aujourd\u2019hui le secteur le plus \u00e9nergivore. \u00c0 lui seul, il constitue un gisement important de r\u00e9duction des \u00e9missions de gaz \u00e0 effet de serre. Le Gouvernement a d\u2019ailleurs mis en place plusieurs r\u00e9glementations comme l\u2019audit \u00e9nerg\u00e9tique r\u00e9glementaire, le bilan carbone et le [&hellip;]<\/p>\n","protected":false},"author":43,"featured_media":534,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[120],"tags":[],"class_list":["post-533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-performance-environnementale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>D\u00e9tection et mesure d\u2019\u00e9conomies d\u2019\u00e9nergie : 3 m\u00e9thodes efficaces qui s\u2019offrent \u00e0 vous - Deepki<\/title>\n<meta name=\"description\" content=\"Quand peut-on r\u00e9ellement parler d\u2019\u00e9conomies d\u2019\u00e9nergie et comment les mesure-t-on ? 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