{"id":42966,"date":"2025-06-17T14:19:53","date_gmt":"2025-06-17T14:19:53","guid":{"rendered":"https:\/\/trojan-lighting.co.uk\/services\/modelisation-du-retour-sur-investissement\/"},"modified":"2025-07-02T09:51:58","modified_gmt":"2025-07-02T09:51:58","slug":"modelisation-du-retour-sur-investissement","status":"publish","type":"page","link":"https:\/\/trojan-lighting.co.uk\/fr\/services\/modelisation-du-retour-sur-investissement\/","title":{"rendered":"Mod\u00e9lisation du retour sur investissement"},"content":{"rendered":"\t\t
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Mod\u00e9lisation du retour sur investissement<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Vous vous demandez quel impact la mise \u00e0 niveau vers Trojan Lighting pourrait avoir sur votre consommation d\u2019\u00e9nergie et vos r\u00e9sultats ? Utilisez notre calculateur de retour sur investissement pour estimer les \u00e9conomies potentielles, la p\u00e9riode de r\u00e9cup\u00e9ration et l\u2019am\u00e9lioration des performances lors du passage \u00e0 nos solutions LED intelligentes. <\/p>

Cet outil fournit un instantan\u00e9 indicatif bas\u00e9 sur votre configuration d\u2019\u00e9clairage actuelle, parfait pour des v\u00e9rifications rapides de faisabilit\u00e9 ou pour monter un dossier d\u2019investissement. Pour une conception d\u2019\u00e9clairage compl\u00e8te et une proposition d\u00e9taill\u00e9e de retour sur investissement, contactez l\u2019\u00e9quipe Trojan. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"range-1200\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\r\n\r\n\r\n Calculateur de retour sur investissement de mise \u00e0 niveau de l\u2019\u00e9clairage<\/title>\r\n <style>\r\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Poppins:wght@400;600&display=swap');\r\n body {\r\n font-family: 'Poppins', sans-serif;\r\n background-color: #f9f9f9;\r\n color: #333;\r\n }\r\n h2 {\r\n color: #004b6b;\r\n }\r\n table {\r\n width: 100%;\r\n border-collapse: collapse;\r\n margin-bottom: 30px;\r\n background: #fff;\r\n box-shadow: 0 2px 5px rgba(0,0,0,0.1);\r\n }\r\n th, td {\r\n padding: 12px 15px;\r\n border: 1px solid #ddd;\r\n text-align: left;\r\n }\r\n th {\r\n background-color: #005684 !important;\r\n color: #fff;\r\n }\r\n input, select {\r\n width: 100%;\r\n padding: 8px;\r\n border-radius: 4px;\r\n border: 1px solid #ccc;\r\n font-size: 14px;\r\n }\r\n .result {\r\n background-color: #e0f7fa;\r\n }\r\n button {\r\n background-color: #005684;\r\n color: white;\r\n border: none;\r\n padding: 10px 20px;\r\n margin-top: 10px;\r\n border-radius: 4px;\r\n cursor: pointer;\r\n font-size: 14px;\r\n }\r\n button:hover {\r\n background-color: #003e57;\r\n }\r\n <\/style>\r\n\r\n\r\n <h2>Calculateur de retour sur investissement de mise \u00e0 niveau de l\u2019\u00e9clairage<\/h2>\r\n\r\n <h3>Configuration d\u2019\u00e9clairage existante<\/h3>\r\n <table id=\"fittingsTable\">\r\n <tr><th>Type de raccord<\/th><th>Nombre de raccords<\/th><th>Puissance (existante)<\/th><th><\/th><\/tr>\r\n <tr>\r\n <td><select class=\"type\">\r\n <option>Cloison<\/option>\r\n <option>Downlight<\/option>\r\n <option>Urgence<\/option>\r\n <option>Ext\u00e9rieur<\/option>\r\n <option>High Bay<\/option>\r\n <option>Lumi\u00e8re lin\u00e9aire<\/option>\r\n <option>Modulaire<\/option>\r\n <option>Projecteur<\/option>\r\n <\/select><\/td>\r\n <td><input type=\"number\" class=\"qty\" value=\"10\"><\/td>\r\n <td><input type=\"number\" class=\"watt\" value=\"100\"><\/td>\r\n <td><button onclick=\"removeRow(this)\">Enlever<\/button><\/td>\r\n <\/tr>\r\n <\/table>\r\n <button onclick=\"addRow()\">Ajouter plus de raccords<\/button>\r\n\r\n <h3>D\u00e9tails d\u2019utilisation<\/h3>\r\n <label for=\"currency\">S\u00e9lectionnez la devise :<\/label>\r\n <select id=\"currency\" onchange=\"updateCurrencySymbol()\">\r\n <option value=\"GBP\" selected>GBP (\u00a3)<\/option>\r\n <option value=\"EUR\">EUR (\u20ac)<\/option>\r\n <\/select>\r\n <p id=\"rateDisplay\" style=\"font-size: 12px; color: #666;\"><\/p>\r\n\r\n <table>\r\n <tr><td>Heures d\u2019utilisation par jour<\/td><td><input type=\"number\" id=\"hours\" value=\"12\"><\/td><\/tr>\r\n <tr><td>Jours par an<\/td><td><input type=\"number\" id=\"days\" value=\"360\"><\/td><\/tr>\r\n <tr><td>Co\u00fbt de l\u2019\u00e9lectricit\u00e9 (par kWh)<\/td><td><input type=\"number\" id=\"cost_kwh\" value=\"0.25\" step=\"0.01\"><\/td><\/tr>\r\n <tr><td>Co\u00fbt d\u2019installation<\/td><td><input type=\"number\" id=\"install_cost\" value=\"10000\"><\/td><\/tr>\r\n <\/table>\r\n\r\n <h3>R\u00e9sultats<\/h3>\r\n <p>Ces r\u00e9sultats ne sont donn\u00e9s qu\u2019\u00e0 titre indicatif et ne doivent \u00eatre utilis\u00e9s qu\u2019\u00e0 des fins d\u2019illustration. <a href=\"https:\/\/trojan-lighting.co.uk\/fr\/contact\/\">Contactez Trojan Lighting Solutions<\/a> pour un calcul d\u00e9taill\u00e9.<\/p>\r\n <button onclick=\"calculateROI()\">Calculer<\/button>\r\n\r\n <table>\r\n <tr><th>Valeur de calcul<\/th><th><\/th><\/tr>\r\n <tr class=\"result\"><td>Consommation d\u2019\u00e9nergie annuelle existante (kWh)<\/td><td id=\"energy_existing\"><\/td><\/tr>\r\n <tr class=\"result\"><td>Nouvelle consommation annuelle d\u2019\u00e9nergie (kWh)<\/td><td id=\"energy_new\"><\/td><\/tr>\r\n <tr class=\"result\"><td>\u00c9conomies annuelles (kWh)<\/td><td id=\"savings_kwh\"><\/td><\/tr>\r\n <tr class=\"result\"><td>\u00c9conomies annuelles<\/td><td id=\"savings_pound\"><\/td><\/tr>\r\n <tr class=\"result\"><td>Co\u00fbt total du projet<\/td><td id=\"total_cost\"><\/td><\/tr>\r\n <tr class=\"result\"><td>Retour sur investissement (ann\u00e9es)<\/td><td id=\"roi_years\"><\/td><\/tr>\r\n <tr class=\"result\"><td>\u00c9conomies apr\u00e8s 3 ans<\/td><td id=\"savings_3yr\"><\/td><\/tr>\r\n <\/table>\r\n\r\n <button onclick=\"downloadPDF()\">T\u00e9l\u00e9charger le PDF<\/button>\r\n\r\n <script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/jspdf\/2.5.1\/jspdf.umd.min.js\"><\/script>\r\n <script>\r\n const productCosts = {\r\n \"Linear Light\": 50,\r\n \"Bulkhead\": 50,\r\n \"Downlight\": 66,\r\n \"Spotlight\": 100,\r\n \"Modular\": 50,\r\n \"Emergency\": 77,\r\n \"Exterior\": 100,\r\n \"High Bay\": 80\r\n };\r\n\r\n const trojanWattages = {\r\n \"Linear Light\": 34,\r\n \"Bulkhead\": 17,\r\n \"Downlight\": 25,\r\n \"Spotlight\": 17,\r\n \"Modular\": 30,\r\n \"Emergency\": 10,\r\n \"Exterior\": 130,\r\n \"High Bay\": 91\r\n };\r\n\r\n let currencySymbol = \"\u00a3\";\r\n let exchangeRate = 1;\r\n\r\n async function updateCurrencySymbol() {\r\n const selectedCurrency = document.getElementById(\"currency\").value;\r\n currencySymbol = selectedCurrency === \"EUR\" ? \"\u20ac\" : \"\u00a3\";\r\n\r\n if (selectedCurrency === \"EUR\") {\r\n try {\r\n const res = await fetch(\"https:\/\/api.exchangerate.host\/latest?base=GBP&symbols=EUR\");\r\n const data = await res.json();\r\n exchangeRate = data.rates.EUR || 1.15;\r\n document.getElementById(\"rateDisplay\").innerText = `Exchange rate: 1 GBP = ${exchangeRate.toFixed(3)} EUR`;\r\n } catch {\r\n exchangeRate = 1.15;\r\n document.getElementById(\"rateDisplay\").innerText = `Exchange rate (defaulted): 1 GBP = 1.15 EUR`;\r\n }\r\n } else {\r\n exchangeRate = 1;\r\n document.getElementById(\"rateDisplay\").innerText = '';\r\n }\r\n\r\n calculateROI();\r\n }\r\n\r\n function addRow() {\r\n const table = document.getElementById(\"fittingsTable\");\r\n const row = table.insertRow(-1);\r\n row.innerHTML = `\r\n <td><select class=\"type\">\r\n <option>Bulkhead<\/option>\r\n <option>Downlight<\/option>\r\n <option>Emergency<\/option>\r\n <option>Exterior<\/option>\r\n <option>High Bay<\/option>\r\n <option>Linear Light<\/option>\r\n <option>Modular<\/option>\r\n <option>Spotlight<\/option>\r\n <\/select><\/td>\r\n <td><input type=\"number\" class=\"qty\" value=\"10\"><\/td>\r\n <td><input type=\"number\" class=\"watt\" value=\"100\"><\/td>\r\n <td><button onclick=\"removeRow(this)\">Remove<\/button><\/td>`;\r\n }\r\n\r\n function removeRow(button) {\r\n const row = button.parentElement.parentElement;\r\n row.remove();\r\n }\r\n\r\n function calculateROI() {\r\n const types = document.querySelectorAll('.type');\r\n const qtys = document.querySelectorAll('.qty');\r\n const watts = document.querySelectorAll('.watt');\r\n\r\n let total_energy_existing = 0;\r\n let total_energy_new = 0;\r\n let total_product_cost = 0;\r\n\r\n const hours = parseFloat(document.getElementById('hours').value);\r\n const days = parseFloat(document.getElementById('days').value);\r\n const cost_kwh = parseFloat(document.getElementById('cost_kwh').value);\r\n const install_cost = parseFloat(document.getElementById('install_cost').value);\r\n\r\n for (let i = 0; i < types.length; i++) {\r\n const qty = parseFloat(qtys[i].value);\r\n const watt_existing = parseFloat(watts[i].value);\r\n const type = types[i].value;\r\n const watt_new = trojanWattages[type] || (watt_existing \/ 2);\r\n const unit_cost = productCosts[type] || 0;\r\n\r\n total_product_cost += qty * unit_cost;\r\n total_energy_existing += qty * watt_existing * hours * days \/ 1000;\r\n total_energy_new += qty * watt_new * hours * days \/ 1000;\r\n }\r\n\r\n const savings_kwh = total_energy_existing - total_energy_new;\r\n const savings_gbp = savings_kwh * cost_kwh;\r\n const total_cost_gbp = total_product_cost + install_cost;\r\n\r\n const savings_converted = savings_gbp * exchangeRate;\r\n const total_cost_converted = total_cost_gbp * exchangeRate;\r\n const roi_years = total_cost_converted \/ savings_converted;\r\n const savings_3yr = savings_converted * 3;\r\n\r\n document.getElementById('energy_existing').innerText = total_energy_existing.toFixed(2);\r\n document.getElementById('energy_new').innerText = total_energy_new.toFixed(2);\r\n document.getElementById('savings_kwh').innerText = savings_kwh.toFixed(2);\r\n document.getElementById('savings_pound').innerText = currencySymbol + savings_converted.toFixed(2);\r\n document.getElementById('total_cost').innerText = currencySymbol + total_cost_converted.toFixed(2);\r\n document.getElementById('roi_years').innerText = roi_years.toFixed(2) + \" years\";\r\n document.getElementById('savings_3yr').innerText = currencySymbol + savings_3yr.toFixed(2);\r\n }\r\n\r\n async function downloadPDF() {\r\n const jsPDF = window.jspdf.jsPDF;\r\n const doc = new jsPDF({ compress: true });\r\n\r\n const logo = new Image();\r\n logo.src = 'https:\/\/trojan-lighting.co.uk\/wp-content\/uploads\/2023\/03\/trojan_2-02.png';\r\n\r\n logo.onload = function () {\r\n doc.addImage(logo, 'PNG', 150, 10, 40, 13); \/\/ smaller logo\r\n\r\n doc.setFontSize(18);\r\n doc.setTextColor('#005684');\r\n doc.text('Trojan Lighting ROI Summary', 20, 30);\r\n\r\n doc.setFontSize(10);\r\n doc.setTextColor('#333');\r\n doc.text('These results are indicative only and should only be used for illustrative purposes.', 20, 36);\r\n doc.text('Contact Trojan Lighting Solutions for a detailed calculation.', 20, 41);\r\n\r\n let y = 50;\r\n\r\n \/\/ Section: Lighting Setup\r\n doc.setFontSize(16);\r\n doc.setFillColor(230, 240, 255);\r\n doc.rect(15, y - 6, 180, 10, 'F');\r\n doc.setTextColor('#000');\r\n doc.text('Lighting Setup', 20, y);\r\n y += 10;\r\n doc.setFontSize(12);\r\n\r\n const types = document.querySelectorAll('.type');\r\n const qtys = document.querySelectorAll('.qty');\r\n const watts = document.querySelectorAll('.watt');\r\n for (let i = 0; i < types.length; i++) {\r\n const line = `Type: ${types[i].value}, Qty: ${qtys[i].value}, Watt: ${watts[i].value}`;\r\n doc.text(line, 20, y);\r\n y += 8;\r\n }\r\n\r\n \/\/ Section: Usage Details\r\n y += 6;\r\n doc.setFontSize(16);\r\n doc.setFillColor(230, 240, 255);\r\n doc.rect(15, y - 6, 180, 10, 'F');\r\n doc.setTextColor('#000');\r\n doc.text('Usage Details', 20, y);\r\n y += 10;\r\n doc.setFontSize(12);\r\n\r\n const hours = document.getElementById('hours').value;\r\n const days = document.getElementById('days').value;\r\n const cost_kwh = document.getElementById('cost_kwh').value;\r\n const install_cost = document.getElementById('install_cost').value;\r\n doc.text(`Hours per day: ${hours}`, 20, y); y += 8;\r\n doc.text(`Days per year: ${days}`, 20, y); y += 8;\r\n doc.text(`Electricity cost: ${currencySymbol}${cost_kwh}`, 20, y); y += 8;\r\n doc.text(`Installation cost: ${currencySymbol}${install_cost}`, 20, y); y += 10;\r\n\r\n \/\/ Section: Results\r\n doc.setFontSize(16);\r\n doc.setFillColor(230, 240, 255);\r\n doc.rect(15, y - 6, 180, 10, 'F');\r\n doc.setTextColor('#000');\r\n doc.text('Results', 20, y);\r\n y += 10;\r\n doc.setFontSize(12);\r\n\r\n const rows = document.querySelectorAll('tr.result');\r\n rows.forEach(row => {\r\n const label = row.children[0].innerText;\r\n const value = row.children[1].innerText;\r\n doc.setDrawColor(220);\r\n doc.setFillColor(255);\r\n doc.rect(15, y - 5.5, 180, 9, 'F');\r\n doc.setTextColor('#000');\r\n doc.text(label + ':', 20, y);\r\n doc.text(value, 190, y, { align: 'right' });\r\n y += 10;\r\n });\r\n\r\n doc.setFontSize(10);\r\n doc.setTextColor('#888');\r\n doc.text('Trojan Lighting Solutions | sales@trojan-lighting.co.uk | +44 (0)1744 368289', 20, 285);\r\n\r\n doc.save(\"Trojan_ROI_Calculation.pdf\");\r\n };\r\n}\r\n <\/script>\r\n\r\n\r\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8248798 elementor-widget elementor-widget-text-editor\" data-id=\"8248798\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"493\" data-end=\"513\"><strong data-start=\"493\" data-end=\"513\">Notes importantes :<\/strong><\/p><ul data-start=\"515\" data-end=\"1228\"><li data-start=\"515\" data-end=\"632\"><p data-start=\"517\" data-end=\"632\">Cet outil n\u2019est destin\u00e9 qu\u2019\u00e0 fournir des \u00e9conomies indicatives, sur la base de donn\u00e9es saisies par l\u2019utilisateur et d\u2019hypoth\u00e8ses standardis\u00e9es.<\/p><\/li><li data-start=\"633\" data-end=\"780\"><p data-start=\"635\" data-end=\"780\">Les performances d\u2019\u00e9clairage, les co\u00fbts d\u2019installation et les \u00e9conomies d\u2019\u00e9nergie r\u00e9elles peuvent varier en fonction des conditions du site, de la s\u00e9lection de produits et des habitudes d\u2019utilisation.<\/p><\/li><li data-start=\"781\" data-end=\"922\"><p data-start=\"783\" data-end=\"922\">Les \u00e9conomies r\u00e9alis\u00e9es sur la dur\u00e9e de vie sont bas\u00e9es sur les prix actuels de l\u2019\u00e9lectricit\u00e9 et ne tiennent pas compte de l\u2019inflation, des co\u00fbts d\u2019entretien ou des fluctuations des prix de l\u2019\u00e9nergie.<\/p><\/li><li data-start=\"923\" data-end=\"1039\"><p data-start=\"925\" data-end=\"1039\">Les co\u00fbts d\u2019installation utilis\u00e9s dans le calculateur sont un espace r\u00e9serv\u00e9 ; Les co\u00fbts r\u00e9els d\u00e9pendront de la port\u00e9e et des sp\u00e9cificit\u00e9s du site.<\/p><\/li><li data-start=\"1040\" data-end=\"1228\"><p data-start=\"1042\" data-end=\"1228\">Trojan Lighting Solutions d\u00e9cline toute responsabilit\u00e9 pour les d\u00e9cisions prises sur la base des r\u00e9sultats de cet outil. Pour un retour sur investissement complet et sp\u00e9cifique au projet et une proposition de conception, veuillez contacter directement notre \u00e9quipe. <\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Utilisez notre calculateur de retour sur investissement pour estimer les \u00e9conomies potentielles, la p\u00e9riode de r\u00e9cup\u00e9ration et l\u2019am\u00e9lioration des performances lors du passage \u00e0 nos solutions LED intelligentes.<\/p>\n","protected":false},"author":5647,"featured_media":43507,"parent":22242,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-42966","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mod\u00e9lisation du retour sur investissement de Trojan Lighting<\/title>\n<meta name=\"description\" content=\"Utilisez notre calculateur de retour sur investissement pour estimer les \u00e9conomies potentielles, la p\u00e9riode de r\u00e9cup\u00e9ration et l\u2019am\u00e9lioration des performances lors du passage \u00e0 nos solutions LED intelligentes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/trojan-lighting.co.uk\/fr\/services\/modelisation-du-retour-sur-investissement\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mod\u00e9lisation du retour sur investissement de Trojan Lighting\" \/>\n<meta property=\"og:description\" content=\"Utilisez notre calculateur de retour sur investissement pour estimer les \u00e9conomies potentielles, la p\u00e9riode de r\u00e9cup\u00e9ration et l\u2019am\u00e9lioration des performances lors du passage \u00e0 nos solutions LED intelligentes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/trojan-lighting.co.uk\/fr\/services\/modelisation-du-retour-sur-investissement\/\" \/>\n<meta property=\"og:site_name\" content=\"Solutions d\u2019\u00e9clairage intelligentes Trojan\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-02T09:51:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/trojan-lighting.co.uk\/wp-content\/uploads\/2024\/12\/range-1200-png.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"736\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" 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