{"id":8685,"date":"2023-07-21T12:35:01","date_gmt":"2023-07-21T10:35:01","guid":{"rendered":"https:\/\/cubeconcepts.de\/?p=8685"},"modified":"2026-06-12T09:59:19","modified_gmt":"2026-06-12T07:59:19","slug":"photovoltaic-cleaning-efficiency-and-value-retention","status":"publish","type":"post","link":"https:\/\/cubeconcepts.de\/en\/photovoltaik-reinigung-effizienz-und-werterhaltung\/","title":{"rendered":"When should solar panels be cleaned?"},"content":{"rendered":"<figure class=\"wp-block-image alignright size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Schnee-1024x682.jpg\" alt=\"\" class=\"wp-image-9136\" style=\"width:385px;height:256px\" srcset=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Schnee-1024x682.jpg 1024w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Schnee-300x200.jpg 300w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Schnee-768x512.jpg 768w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Schnee.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A photovoltaic system should be cleaned when <strong>Contaminants measurably reduce yield<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical guidelines:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cleaning approximately <strong>every 1\u20132 years<\/strong><\/li>\n\n\n\n<li>More common in:\n<ul class=\"wp-block-list\">\n<li>heavy dust exposure (e.g., industry, agriculture)<\/li>\n\n\n\n<li>Pollen<\/li>\n\n\n\n<li>Bird droppings<\/li>\n\n\n\n<li>Sahara dust events<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What's crucial isn't the fixed schedule, but the <strong>actual power loss<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How much does soiling affect PV yield?<\/h2>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-7387b849 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">Contaminants can the <a href=\"https:\/\/cubeconcepts.de\/en\/the-pv-yield\/\" type=\"post\" id=\"8668\">PV yield<\/a> and significantly reduce the economic viability of a plant:<\/p>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>lower light transmission of the modules<\/li>\n\n\n\n<li>reduced electricity production<\/li>\n\n\n\n<li>inefficient plant operation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In practice, <strong>Losses in yield ranging from several percent to double-digit figures<\/strong> possible \u2013 depending on location and pollution.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Wenn eine PV-Anlage nicht gereinigt wird, kann dies zu einer Verringerung der Stromerzeugung f\u00fchren. Staub, Schmutz, Vogelkot und andere Ablagerungen auf den Solarmodulen k\u00f6nnen das Sonnenlicht blockieren und verhindern, dass die Module ihre volle Leistung erbringen. Dies kann zu einer geringeren Effizienz und damit zu einem geringeren Ertrag f\u00fchren.\n\nDar\u00fcber hinaus kann eine \u00fcberm\u00e4\u00dfige Schmutzansammlung das Material der Module \u00fcberhitzen, was langfristig zu Sch\u00e4den f\u00fchren kann. Auch Korrosion kann beg\u00fcnstigt werden, insbesondere wenn Schmutz Feuchtigkeit speichert.\n\nJe nach Standort und Umwelteinfl\u00fcssen kann die Reinigung alle paar Monate bis hin zu einmal im Jahr oder sogar seltener notwendig sein.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Decreasing efficiency<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>less sunlight reaches the solar cells <\/li>\n\n\n\n<li>lower power production<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Lower profitability<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>lower self-consumption <\/li>\n\n\n\n<li>longer payback period<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Possible Damage &amp; Reduced Lifespan<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Persistent soiling can strain modules <\/li>\n\n\n\n<li>in extreme cases, risk of hotspots or material wear<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Warranty Risks<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Warranty claims may be limited due to a lack of maintenance.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Don't PV systems clean themselves?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Partly yes \u2013 but not entirely.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rain removed <strong>light dirt<\/strong><\/li>\n\n\n\n<li>Inclination angle supports self-cleaning<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-7387b849 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">The problem: Stubborn dirt like:<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-7387b849 wp-block-group-is-layout-flex\">\n<ul class=\"wp-block-list\">\n<li>Bird droppings<\/li>\n\n\n\n<li>Dust deposits<\/li>\n\n\n\n<li>Industrial particles<\/li>\n<\/ul>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">become <strong>not reliably removed<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What cleaning methods are there?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Water-based cleaning (standard)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>low-mineral water<\/li>\n\n\n\n<li>Possibly special cleaning agents<\/li>\n\n\n\n<li>gentle and effective<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In practice, this is the <strong>most common method for commercial installations<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Mechanical Cleaning<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Brushes or wipers<\/li>\n\n\n\n<li>for heavy soiling<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Risk: Improper application may damage modules<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Automated Cleaning<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cleaning robot (e.g. for <a href=\"https:\/\/cubeconcepts.de\/en\/products\/solar-parks\/\" type=\"page\" id=\"543\">Solar parks<\/a>) <\/li>\n\n\n\n<li>efficiently with large facilities<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What does photovoltaic cleaning cost?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The costs depend heavily on the framework conditions:<\/p>\n\n\n\n<div class=\"wp-block-group is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-f36ac205 wp-block-group-is-layout-flex\">\n<ul class=\"wp-block-list\">\n<li>System size<\/li>\n\n\n\n<li>Accessibility (Flat Roof vs. Pitched Roof)<\/li>\n\n\n\n<li>Degree of pollution<\/li>\n\n\n\n<li>Technology used<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><img decoding=\"async\" width=\"825\" height=\"715\" src=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Verschmutzung.jpg\" alt=\"\" class=\"wp-image-9149\" style=\"aspect-ratio:1.1573033707865168;width:310px;height:auto\" srcset=\"https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Verschmutzung.jpg 825w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Verschmutzung-300x260.jpg 300w, https:\/\/cubeconcepts.de\/wp-content\/uploads\/2023\/08\/Photovoltaik-Reinigung-Verschmutzung-768x666.jpg 768w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><\/figure>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For large commercial facilities, prices are usually <strong>Individual and negotiable<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Is a PV cleaning economically worthwhile?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Yes \u2013 if the yield loss due to pollution is higher than the cleaning costs. As a rule of thumb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High pollution + large facility = cleaning is usually economical<\/strong><\/li>\n\n\n\n<li><strong>Slight pollution = cleaning may not be necessary<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Can you clean solar panel systems yourself?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Partially - but with limitations:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Possible with:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>easily accessible flat roofs<\/li>\n\n\n\n<li>small to medium-sized facilities<\/li>\n\n\n\n<li>existing security measures<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Not recommended for:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sloped roofs<\/li>\n\n\n\n<li>inaccessible facilities<\/li>\n\n\n\n<li>large commercial systems<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here should <strong>Professional service providers<\/strong> be used.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How do you know if cleaning is necessary?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The best foundation is <strong>Monitoring<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Comparison of planned and actual yield<\/li>\n\n\n\n<li>Sudden performance drops<\/li>\n\n\n\n<li>visual pollution<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Without monitoring, pollution often <strong>recognized too late<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion: Cleaning is not a standard - but an economic decision<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Photovoltaic cleaning is not a fixed maintenance cycle, but rather a <strong>state-dependent measure<\/strong>. For companies, this means:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Monitor yield regularly<\/li>\n\n\n\n<li>Targeted cleaning<\/li>\n\n\n\n<li>Keep economic efficiency in mind<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When used correctly, cleaning provides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>stable yields<\/li>\n\n\n\n<li>shorter payback periods<\/li>\n\n\n\n<li>Long-term asset preservation<\/li>\n<\/ul>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/cubeconcepts.de\/en\/maintenance-of-pv-systems-maximizing-performance-and-durability\/\">How should PV systems be maintained<\/a><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Although rain and tilt angles contribute to self-cleaning, they often reach their limits with stubborn deposits, risking long-term module damage. Learn when professional cleaning is economically worthwhile and how to extend the lifespan of your commercial solar system through the correct use of technology.<\/p>","protected":false},"author":3,"featured_media":8688,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61,25],"tags":[],"class_list":["post-8685","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grundlagen-technik","category-photovoltaik"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Was bringt eine Photovoltaik-Reinigung? | CUBE CONCEPTS<\/title>\n<meta name=\"description\" content=\"Eine regelm\u00e4\u00dfige Photovoltaik-Reinigung ist unerl\u00e4sslich, um die Effizienz und Lebensdauer einer PV-Anlage zu garantieren.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cubeconcepts.de\/en\/photovoltaic-cleaning-efficiency-and-value-retention\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Was bringt eine Photovoltaik-Reinigung? 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