{"id":678,"date":"2026-07-26T20:57:09","date_gmt":"2026-07-26T12:57:09","guid":{"rendered":"https:\/\/luminvolt.com\/"},"modified":"2026-10-19T11:18:10","modified_gmt":"2026-10-19T03:18:10","slug":"calculateur-de-charge-de-neige-pour-panneaux-solaires-et-eoliennes","status":"publish","type":"page","link":"https:\/\/luminvolt.com\/fr\/calculateur-de-charge-de-neige-pour-panneaux-solaires-et-eoliennes\/","title":{"rendered":"Calculateur de charge de vent et de neige pour panneaux solaires"},"content":{"rendered":"\n<style>\n  body.page-id-678 #right-sidebar {\n    display: none !important;\n  }\n\n  body.page-id-678 #primary {\n    float: none !important;\n    width: 100% !important;\n  }\n\n  body.page-id-678 #page.site {\n    max-width: none !important;\n  }\n\n  body.page-id-678 .site-content {\n    display: block !important;\n    padding: 0 !important;\n  }\n\n  body.page-id-678 .site-main {\n    margin: 0 !important;\n  }\n\n  body.page-id-678 .inside-article {\n    padding: 0 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}\n  }\n\n  @media (max-width: 720px) {\n    .wsx .wsx-wrap {\n      width: min(100% - 28px, 1200px);\n    }\n\n    .wsx .wsx-hero {\n      padding: 64px 0;\n    }\n\n    .wsx .wsx-fields,\n    .wsx .wsx-result-cards,\n    .wsx .wsx-governing,\n    .wsx .wsx-steps,\n    .wsx .wsx-cta {\n      grid-template-columns: 1fr;\n    }\n\n    .wsx .wsx-field--wide {\n      grid-column: auto;\n    }\n\n    .wsx .wsx-governing {\n      align-items: start;\n    }\n\n    .wsx .wsx-step-card {\n      min-height: 0;\n    }\n\n    .wsx .wsx-step-number {\n      margin-bottom: 34px;\n    }\n  }\n\n  @media (prefers-reduced-motion: reduce) {\n    .wsx *,\n    .wsx *::before,\n    .wsx *::after {\n      transition-duration: 0.01ms !important;\n    }\n  }\n<\/style>\n\n<div class=\"wsx\">\n  <section class=\"wsx-hero\">\n    <div class=\"wsx-wrap wsx-hero-grid\">\n      <div>\n        <span class=\"wsx-eyebrow wsx-eyebrow--light\">Free preliminary design tool<\/span>\n        <h1>Solar Panel Wind &amp; Snow Load Calculator<\/h1>\n        <p class=\"wsx-hero-lead\">Estimate combined wind and snow design pressure, identify the governing load case and calculate per-module forces for ground-mounted solar arrays in seconds.<\/p>\n      <\/div>\n      <div class=\"wsx-hero-meta\" aria-label=\"Calculator scope\">\n        <div><span>Output<\/span><strong>kPa &amp; kN\/module<\/strong><\/div>\n        <div><span>Load cases<\/span><strong>Wind + snow<\/strong><\/div>\n        <div><span>Method<\/span><strong>Research-based \u03c8<\/strong><\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"wsx-tool-section\" id=\"calculator\">\n    <div class=\"wsx-wrap\">\n      <div class=\"wsx-tool-heading\">\n        <div>\n          <span class=\"wsx-eyebrow\">Interactive calculator<\/span>\n          <h2>Enter your site parameters.<\/h2>\n        <\/div>\n        <p>Results update instantly as you type. Use the defaults for a quick example, then replace them with your project data.<\/p>\n      <\/div>\n\n      <div class=\"wsx-calculator\">\n        <form class=\"wsx-input-panel\" id=\"wsx-form\" onsubmit=\"return false;\">\n          <div class=\"wsx-panel-title\">\n            <h3>Site &amp; array parameters<\/h3>\n            <span class=\"wsx-step\">Step 01<\/span>\n          <\/div>\n          <div class=\"wsx-fields\">\n            <div class=\"wsx-field\">\n              <label for=\"wsl-v\">Basic wind speed V<\/label>\n              <div class=\"wsx-input-wrap\">\n                <input type=\"number\" id=\"wsl-v\" value=\"30\" min=\"10\" max=\"80\" step=\"0.5\">\n                <span class=\"wsx-unit\">m\/s<\/span>\n              <\/div>\n              <small>3-second gust speed<\/small>\n            <\/div>\n\n            <div class=\"wsx-field\">\n              <label for=\"wsl-sg\">Ground snow load S<sub>g<\/sub><\/label>\n              <div class=\"wsx-input-wrap\">\n                <input type=\"number\" id=\"wsl-sg\" value=\"1.0\" min=\"0\" max=\"10\" step=\"0.05\">\n                <span class=\"wsx-unit\">kPa<\/span>\n              <\/div>\n              <small>Site ground snow load<\/small>\n            <\/div>\n\n            <div class=\"wsx-field\">\n              <label for=\"wsl-tilt\">Panel tilt angle \u03b8<\/label>\n              <div class=\"wsx-input-wrap\">\n                <input type=\"number\" id=\"wsl-tilt\" value=\"25\" min=\"0\" max=\"60\" step=\"1\">\n                <span class=\"wsx-unit\">deg<\/span>\n              <\/div>\n              <small>Degrees from horizontal<\/small>\n            <\/div>\n\n            <div class=\"wsx-field\">\n              <label for=\"wsl-area\">Module area<\/label>\n              <div class=\"wsx-input-wrap\">\n                <input type=\"number\" id=\"wsl-area\" value=\"2.58\" min=\"1\" max=\"4\" step=\"0.01\">\n                <span class=\"wsx-unit\">m\u00b2<\/span>\n              <\/div>\n              <small>Example: 2.58 m\u00b2 for a 620 W module<\/small>\n            <\/div>\n\n            <div class=\"wsx-field\">\n              <label for=\"wsl-cf\">Net force coefficient C<sub>f<\/sub><\/label>\n              <div class=\"wsx-input-wrap\">\n                <input type=\"number\" id=\"wsl-cf\" value=\"1.3\" min=\"0.8\" max=\"2.5\" step=\"0.05\">\n              <\/div>\n              <small>Open-frame ground mount: typically 1.2\u20131.5<\/small>\n            <\/div>\n\n            <div class=\"wsx-field\">\n              <label for=\"wsl-psi\">Combination factor \u03c8<\/label>\n              <div class=\"wsx-input-wrap\">\n                <input type=\"number\" id=\"wsl-psi\" value=\"0.70\" min=\"0.4\" max=\"1\" step=\"0.05\">\n              <\/div>\n              <small>Study range 0.55\u20130.85; median \u2248 0.70<\/small>\n            <\/div>\n          <\/div>\n          <button class=\"wsx-reset\" id=\"wsx-reset\" type=\"button\">Reset default values<\/button>\n        <\/form>\n\n        <section class=\"wsx-results-panel\" aria-live=\"polite\">\n          <div class=\"wsx-panel-title\">\n            <h3>Design loads<\/h3>\n            <span class=\"wsx-step\">Step 02<\/span>\n          <\/div>\n\n          <div class=\"wsx-governing\">\n            <div>\n              <span class=\"wsx-result-label\">Governing combined load<\/span>\n              <div class=\"wsx-governing-value\"><span id=\"wsl-out-gov\">\u2013<\/span><small>kPa<\/small><\/div>\n            <\/div>\n            <div class=\"wsx-governing-meta\">\n              <div class=\"wsx-governing-name\" id=\"wsl-out-gov-name\">\u2013<\/div>\n              <div class=\"wsx-force-row\">\n                <div><span>Downward \/ module<\/span><strong><span id=\"wsl-out-force\">\u2013<\/span> kN<\/strong><\/div>\n                <div><span>Uplift \/ module<\/span><strong><span id=\"wsl-out-uplift\">\u2013<\/span> kN<\/strong><\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n\n          <div class=\"wsx-result-cards\">\n            <div class=\"wsx-result-card\"><span>Wind pressure on panel<\/span><strong id=\"wsl-out-w\">\u2013<\/strong><small>kPa<\/small><\/div>\n            <div class=\"wsx-result-card\"><span>Snow load on panel<\/span><strong id=\"wsl-out-s\">\u2013<\/strong><small>kPa<\/small><\/div>\n            <div class=\"wsx-result-card\"><span>Combo A \u00b7 W + \u03c8S<\/span><strong id=\"wsl-out-a\">\u2013<\/strong><small>kPa<\/small><\/div>\n            <div class=\"wsx-result-card\"><span>Combo B \u00b7 \u03c8W + S<\/span><strong id=\"wsl-out-b\">\u2013<\/strong><small>kPa<\/small><\/div>\n          <\/div>\n\n          <div class=\"wsx-bars\" aria-label=\"Load comparison\">\n            <div class=\"wsx-bar-row\">\n              <div class=\"wsx-bar-label\"><span>Wind alone<\/span><strong id=\"wsl-bl-w\">\u2013<\/strong><\/div>\n              <div class=\"wsx-bar-track\"><div class=\"wsx-bar-fill wsx-bar-fill--soft\" id=\"wsl-bar-w\"><\/div><\/div>\n            <\/div>\n            <div class=\"wsx-bar-row\">\n              <div class=\"wsx-bar-label\"><span>Snow alone<\/span><strong id=\"wsl-bl-s\">\u2013<\/strong><\/div>\n              <div class=\"wsx-bar-track\"><div class=\"wsx-bar-fill wsx-bar-fill--soft\" id=\"wsl-bar-s\"><\/div><\/div>\n            <\/div>\n            <div class=\"wsx-bar-row\">\n              <div class=\"wsx-bar-label\"><span>Governing combination<\/span><strong id=\"wsl-bl-g\">\u2013<\/strong><\/div>\n              <div class=\"wsx-bar-track\"><div class=\"wsx-bar-fill\" id=\"wsl-bar-g\"><\/div><\/div>\n            <\/div>\n          <\/div>\n\n          <p class=\"wsx-disclaimer\">Preliminary service-level loads only. Apply the governing code&#8217;s load factors, exposure, height, topography and importance coefficients for final structural design.<\/p>\n        <\/section>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"wsx-content-section\">\n    <div class=\"wsx-wrap\">\n      <div class=\"wsx-section-heading\">\n        <div>\n          <span class=\"wsx-eyebrow\">Calculation method<\/span>\n          <h2>How the calculator works.<\/h2>\n        <\/div>\n        <p>The calculator estimates combined load on a tilted PV panel in three transparent steps.<\/p>\n      <\/div>\n      <div class=\"wsx-steps\">\n        <article class=\"wsx-step-card\">\n          <span class=\"wsx-step-number\">01 \/ WIND<\/span>\n          <h3>Calculate wind pressure<\/h3>\n          <p>Velocity pressure is calculated from basic wind speed using q = 0.613\u00b7V\u00b2 and multiplied by the net force coefficient C<sub>f<\/sub> for an open-frame ground-mounted array.<\/p>\n        <\/article>\n        <article class=\"wsx-step-card\">\n          <span class=\"wsx-step-number\">02 \/ SNOW<\/span>\n          <h3>Reduce snow for slope<\/h3>\n          <p>Ground snow load S<sub>g<\/sub> is reduced by panel slope: full retention up to 30\u00b0, decreasing linearly toward zero at 70\u00b0, then projected onto the panel surface.<\/p>\n        <\/article>\n        <article class=\"wsx-step-card\">\n          <span class=\"wsx-step-number\">03 \/ COMBINE<\/span>\n          <h3>Select the governing case<\/h3>\n          <p>Full wind plus reduced snow is compared with reduced wind plus full snow. The larger result becomes the governing preliminary design case.<\/p>\n        <\/article>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"wsx-content-section wsx-content-section--tint\">\n    <div class=\"wsx-wrap wsx-method\">\n      <div class=\"wsx-method-stat\">\n        <strong aria-label=\"0.55 to 0.85\"><span class=\"wsx-method-value\" aria-hidden=\"true\">0.55<\/span><span class=\"wsx-method-range-dash\" aria-hidden=\"true\"><\/span><span class=\"wsx-method-value\" aria-hidden=\"true\">0.85<\/span><\/strong>\n        <span class=\"wsx-method-caption\">Observed \u03c8 factor range<\/span>\n      <\/div>\n      <div class=\"wsx-method-copy\">\n        <span class=\"wsx-eyebrow\">Research basis<\/span>\n        <h2>Where the \u03c8 factor comes from.<\/h2>\n        <p>The default combination factor \u03c8 = 0.70 is based on a joint wind\u2013snow hazard study using multi-decade meteorological records from stations across China. The study paired daily maximum wind speeds with snowpack events and evaluated structural response in a 100 m PV support array.<\/p>\n        <p>Across four data-pairing methods, combination factors for column axial force and main-beam bending moment ranged from roughly 0.55 to 0.85, with medians near 0.65\u20130.70. Read the full methodology in our article on <a href=\"https:\/\/luminvolt.com\/determining-wind-snow-load-combination-factors-for-pv-panels\/\">determining wind and snow load combination factors for PV panels<\/a>.<\/p>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"wsx-content-section\" id=\"faq\">\n    <div class=\"wsx-wrap wsx-faq-layout\">\n      <div class=\"wsx-faq-intro\">\n        <span class=\"wsx-eyebrow\">Important guidance<\/span>\n        <h2>Frequently asked questions.<\/h2>\n        <p>Use this calculator for early-stage comparison and racking selection, not as a substitute for stamped structural design.<\/p>\n      <\/div>\n      <div class=\"wsx-faq-list\">\n        <details>\n          <summary><span class=\"wsx-faq-question\">Is this calculator a substitute for structural design?<\/span><span class=\"wsx-faq-icon\" aria-hidden=\"true\">+<\/span><\/summary>\n          <p>No. Final design must apply the load factors, exposure and height coefficients, topographic effects and importance factors of the governing code\u2014such as ASCE 7, EN 1991, GB 50009 or AS\/NZS 1170\u2014and be verified by a licensed structural engineer.<\/p>\n        <\/details>\n        <details>\n          <summary><span class=\"wsx-faq-question\">Why not simply add full wind and full snow loads?<\/span><span class=\"wsx-faq-icon\" aria-hidden=\"true\">+<\/span><\/summary>\n          <p>Peak wind and peak snow are statistically unlikely to occur at the same moment. Adding both full values can overestimate the combined load by 30% or more. Structural codes address this through combination factors such as \u03c8.<\/p>\n        <\/details>\n        <details>\n          <summary><span class=\"wsx-faq-question\">What racking should I use in high-wind or heavy-snow regions?<\/span><span class=\"wsx-faq-icon\" aria-hidden=\"true\">+<\/span><\/summary>\n          <p>Luminvolt&#8217;s <a href=\"https:\/\/luminvolt.com\/professional-ground-mounting-system\/\">utility-grade ground mount systems<\/a> support reinforced pile foundations and heavier rail sections. Our <a href=\"https:\/\/luminvolt.com\/professional-roof-pv-mounting-system\/\">roof mounting systems<\/a> also include ballast and wind-deflector options for exposed flat roofs.<\/p>\n        <\/details>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"wsx-content-section wsx-content-section--tint\">\n    <div class=\"wsx-wrap\">\n      <div class=\"wsx-cta\">\n        <div>\n          <h2>Need a load-verified mounting design?<\/h2>\n          <p>Send our engineering team your wind speed, snow load, module dimensions and site information for a project-specific racking recommendation.<\/p>\n        <\/div>\n        <a class=\"wsx-button\" href=\"https:\/\/luminvolt.com\/contact\/\">Contact Engineering<\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n<\/div>\n\n<script>\n(function(){\n  var I18N = {\n    zh: {\n      \"Combo A \u00b7 wind-dominant\": \"\u7d44\u5408 A \u00b7 \u98a8\u8f09\u8377\u4e3b\u5c0e\",\n      \"Combo B \u00b7 snow-dominant\": \"\u7d44\u5408 B \u00b7 \u96ea\u8f09\u8377\u4e3b\u5c0e\"\n    },\n    es: {\n      \"Combo A \u00b7 wind-dominant\": \"Combinaci\u00f3n A \u00b7 Dominante por viento\",\n      \"Combo B \u00b7 snow-dominant\": \"Combinaci\u00f3n B \u00b7 Dominante por nieve\"\n    },\n    fr: {\n      \"Combo A \u00b7 wind-dominant\": \"Combinaison A \u00b7 Dominante vent\",\n      \"Combo B \u00b7 snow-dominant\": \"Combinaison B \u00b7 Dominante neige\"\n    },\n    de: {\n      \"Combo A \u00b7 wind-dominant\": \"Kombination A \u00b7 Wind-dominant\",\n      \"Combo B \u00b7 snow-dominant\": \"Kombination B \u00b7 Schnee-dominant\"\n    },\n    nl: {\n      \"Combo A \u00b7 wind-dominant\": \"Combinatie A \u00b7 Wind-dominant\",\n      \"Combo B \u00b7 snow-dominant\": \"Combinatie B \u00b7 Sneeuw-dominant\"\n    },\n    en: {\n      \"Combo A \u00b7 wind-dominant\": \"Combo A \u00b7 wind-dominant\",\n      \"Combo B \u00b7 snow-dominant\": \"Combo B \u00b7 snow-dominant\"\n    }\n  };\n\n  var langAttr = (document.documentElement.lang || '').toLowerCase();\n  var pathLang = ['zh', 'es', 'fr', 'de', 'nl'].find(function(l) { return location.pathname.indexOf('\/' + l + '\/') === 0 || location.pathname === '\/' + l; });\n  var lang = pathLang || (langAttr.startsWith('zh') ? 'zh' : langAttr.startsWith('es') ? 'es' : langAttr.startsWith('fr') ? 'fr' : langAttr.startsWith('de') ? 'de' : langAttr.startsWith('nl') ? 'nl' : 'en');\n  var locale = { zh: 'zh-TW', es: 'es-ES', fr: 'fr-FR', de: 'de-DE', nl: 'nl-NL', en: 'en-US' }[lang] || 'en-US';\n  var t = function(k) { return (I18N[lang] && I18N[lang][k]) || k; };\n\n  var fields = [\"wsl-v\", \"wsl-sg\", \"wsl-tilt\", \"wsl-area\", \"wsl-cf\", \"wsl-psi\"];\n  var defaults = {\"wsl-v\":\"30\",\"wsl-sg\":\"1.0\",\"wsl-tilt\":\"25\",\"wsl-area\":\"2.58\",\"wsl-cf\":\"1.3\",\"wsl-psi\":\"0.70\"};\n\n  function num(id) {\n    var field = document.getElementById(id);\n    return field ? (parseFloat(field.value) || 0) : 0;\n  }\n\n  function fmt(value, digits) {\n    var d = digits === undefined ? 2 : digits;\n    return Number.isFinite(value)\n      ? new Intl.NumberFormat(locale, { minimumFractionDigits: d, maximumFractionDigits: d }).format(value)\n      : \"\u2014\";\n  }\n\n  function setText(id, value) {\n    var target = document.getElementById(id);\n    if (target) target.textContent = value;\n  }\n\n  function setWidth(id, value) {\n    var target = document.getElementById(id);\n    if (target) target.style.width = Math.max(0, Math.min(100, value)) + \"%\";\n  }\n\n  function calculate() {\n    var V = num(\"wsl-v\");\n    var Sg = num(\"wsl-sg\");\n    var tilt = num(\"wsl-tilt\");\n    var area = num(\"wsl-area\");\n    var Cf = num(\"wsl-cf\");\n    var psi = num(\"wsl-psi\");\n\n    var velocityPressure = 0.613 * V * V \/ 1000;\n    var wind = velocityPressure * Cf;\n    var slopeFactor = tilt <= 30 ? 1 : (tilt >= 70 ? 0 : (70 - tilt) \/ 40);\n    var snow = Sg * slopeFactor * Math.cos(tilt * Math.PI \/ 180);\n    var comboA = wind + psi * snow;\n    var comboB = psi * wind + snow;\n    var governing = Math.max(comboA, comboB);\n    var governingKey = comboA >= comboB ? \"Combo A \u00b7 wind-dominant\" : \"Combo B \u00b7 snow-dominant\";\n    var governingName = t(governingKey);\n    var maximum = Math.max(governing, wind, snow, 0.001);\n\n    setText(\"wsl-out-w\", fmt(wind));\n    setText(\"wsl-out-s\", fmt(snow));\n    setText(\"wsl-out-a\", fmt(comboA));\n    setText(\"wsl-out-b\", fmt(comboB));\n    setText(\"wsl-out-gov\", fmt(governing));\n    setText(\"wsl-out-gov-name\", governingName);\n    setText(\"wsl-out-force\", fmt(governing * area));\n    setText(\"wsl-out-uplift\", fmt(wind * area));\n    setText(\"wsl-bl-w\", fmt(wind) + \" kPa\");\n    setText(\"wsl-bl-s\", fmt(snow) + \" kPa\");\n    setText(\"wsl-bl-g\", fmt(governing) + \" kPa\");\n\n    setWidth(\"wsl-bar-w\", wind \/ maximum * 100);\n    setWidth(\"wsl-bar-s\", snow \/ maximum * 100);\n    setWidth(\"wsl-bar-g\", governing \/ maximum * 100);\n  }\n\n  fields.forEach(function(id) {\n    var field = document.getElementById(id);\n    if (field) field.addEventListener(\"input\", calculate);\n  });\n\n  var reset = document.getElementById(\"wsx-reset\");\n  if (reset) {\n    reset.addEventListener(\"click\", function() {\n      fields.forEach(function(id) {\n        var field = document.getElementById(id);\n        if (field) field.value = defaults[id];\n      });\n      calculate();\n    });\n  }\n\n  calculate();\n})();\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>Outil de conception pr\u00e9liminaire gratuit, calculateur de charge pour panneaux solaires, vent et neige. Estimez la pression combin\u00e9e de vent et de neige, identifiez le cas de charge dominant et calculez les forces par module pour les installations solaires au sol en quelques secondes. Sortie : kPa et kN\/module. Cas de charge : Vent + neige. M\u00e9thode : Bas\u00e9e sur la recherche. Calculateur interactif \u03c8. Entrez les param\u00e8tres de votre site. Les r\u00e9sultats sont mis \u00e0 jour instantan\u00e9ment au fur et \u00e0 mesure que vous tapez. Utilisez\u2026 <a title=\"Calculateur de charge de vent et de neige pour panneaux solaires\" class=\"read-more\" href=\"https:\/\/luminvolt.com\/fr\/calculateur-de-charge-de-neige-pour-panneaux-solaires-et-eoliennes\/\" aria-label=\"En savoir plus sur le calculateur de charge solaire, \u00e9olienne et de neige\">Lire la suite<\/a><\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"solar panel wind snow load calculator","_yoast_wpseo_title":"Solar Panel Wind & Snow Load Calculator | Luminvolt","_yoast_wpseo_metadesc":"Free wind and snow load calculator for solar panels: combined design pressure, governing load case, and per-module forces with research-based \u03c8 factors.","footnotes":""},"class_list":["post-678","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.3 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Solar Panel Wind &amp; 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