{"id":27748,"date":"2026-06-15T10:20:00","date_gmt":"2026-06-15T08:20:00","guid":{"rendered":"https:\/\/hycleaner.de\/nicht-kategorisiert\/maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability\/"},"modified":"2026-06-15T16:01:29","modified_gmt":"2026-06-15T14:01:29","slug":"maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability","status":"publish","type":"post","link":"https:\/\/hycleaner.de\/en\/expert-knowledge\/maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability\/","title":{"rendered":"Maintenance of PV Systems: Why Cleaning Is Also Crucial for Yield and Profitability"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"27748\" class=\"elementor elementor-27748 elementor-27200\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f24a317 e-con-full e-flex e-con e-parent\" data-id=\"f24a317\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7bf68b21 elementor-widget__width-initial elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"7bf68b21\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Maintenance of PV Systems: Why Cleaning Is Also Crucial for Yield and Profitability<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5039fa7b elementor-widget elementor-widget-heading\" data-id=\"5039fa7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Interview with Photovoltaic Expert Pascal Kierstein<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f953432 elementor-widget elementor-widget-post-info\" data-id=\"7f953432\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-d4e9e0c elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<span class=\"elementor-post-info__terms-list-item\">Expert Knowledge<\/span>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-ac88f4a elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>June 15, 2026<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-bfb9e87 elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\thyCLEANER Redaktion\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7196493 e-con-full e-flex e-con e-parent\" data-id=\"7196493\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e551648 elementor-widget elementor-widget-image\" data-id=\"5e551648\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"867\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-27765\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein3-en-3840x1300-1-2048x693.webp 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\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<div class=\"elementor-element elementor-element-3ba4185c e-flex e-con-boxed e-con e-parent\" data-id=\"3ba4185c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38a722dd elementor-widget elementor-widget-text-editor\" data-id=\"38a722dd\" 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><strong>Photovoltaic systems are considered durable and low-maintenance. Nevertheless, even modern PV systems require regular maintenance and upkeep to operate economically, safely, and reliably over the long term. One factor that has a direct impact on energy yield is particularly underestimated: module contamination.  <\/strong><\/p><p><strong><br>For our hyCLEANER expert blog, we spoke with Pascal Kierstein, certified photovoltaic expert of the German Solar Association, about typical practical errors, the economic significance of cleaning, and current developments in PV system maintenance.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f3e0d30 e-con-full e-flex e-con e-child\" data-id=\"f3e0d30\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a689536 elementor-widget elementor-widget-heading\" data-id=\"a689536\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Points<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-128e521 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"128e521\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_rotateZ_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_tablet&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_mobile&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" 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<ul><li><strong>Regular maintenance<\/strong> is crucial for the <strong>profitability and operational safety<\/strong> of PV systems.<\/li><li>Module contamination directly leads to <strong>measurable performance losses<\/strong>.<\/li><li>From an expert perspective, professional cleaning is an integral part of <strong>PV system maintenance<\/strong>.<\/li><li>Operators of commercial PV systems bear responsibility for the <strong>proper condition and operational safety<\/strong> of their system.<\/li><li>Modern maintenance concepts increasingly rely on <strong>data-based monitoring and predictive maintenance<\/strong>.<\/li><li>Many <strong>yield losses<\/strong> and technical problems can be <strong>prevented early through<\/strong> <strong>regular maintenance<\/strong>.<\/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<div class=\"elementor-element elementor-element-4f3a215 elementor-widget elementor-widget-heading\" data-id=\"4f3a215\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Significance and Fundamentals of PV Maintenance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8141583 elementor-widget elementor-widget-heading\" data-id=\"8141583\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How important is regular maintenance of PV systems?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-880ef4c elementor-widget elementor-widget-text-editor\" data-id=\"880ef4c\" 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><strong>Pascal Kierstein:<\/strong> Maintenance is a central factor for the profitability of a system. <b>Without regular care, wear and performance losses inevitably occur.<\/b> This also applies in electrical engineering: a system is only as good as its maintenance condition.<\/p><p><br>A photovoltaic system can only operate efficiently over the long term if it is professionally inspected and maintained.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc3fd66 elementor-widget elementor-widget-heading\" data-id=\"dc3fd66\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Which maintenance measures are most frequently neglected in practice?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e558db2 elementor-widget elementor-widget-text-editor\" data-id=\"e558db2\" 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><strong>Pascal Kierstein:<\/strong> In practice, <b>visual inspections, measurement-based checks<\/b>, and <b>regular cleaning of generator surfaces<\/b> are frequently neglected. <span data-teams=\"true\">In solar systems, &#8220;generator surface&#8221; refers to the entire active area of the installed solar modules\u2014that is, the area that actually converts sunlight into electrical energy.<\/span> <\/p><p><br>The impact of contamination on system performance is significantly underestimated by many operators: even partially contaminated generator surfaces can lead to considerable performance losses and thus significantly impair the profitability of the system.<\/p><p><br>Particularly with commercial systems, it is noticeable that maintenance only becomes an issue once visible yield losses or technical problems have already occurred.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d119422 elementor-widget elementor-widget-image\" data-id=\"d119422\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"2560\" height=\"867\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-25271\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/04\/teaser-breit-solarindustrie-inspektion-3840x1300-1-2048x693.webp 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\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 class=\"elementor-element elementor-element-cce3ee7 elementor-widget elementor-widget-heading\" data-id=\"cce3ee7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contamination and Its Economic Consequences<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e915b99 elementor-widget elementor-widget-heading\" data-id=\"e915b99\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Why does contamination have a direct impact on energy yield?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b728dc elementor-widget elementor-widget-text-editor\" data-id=\"3b728dc\" 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><strong>Pascal Kierstein:<\/strong> Contamination of PV modules has a direct impact on energy yield because the module represents the primary energy source of the system.<\/p><p><br>Any form of deposit on the module surface reduces irradiation and consequently leads to reduced yields. From a technical perspective, the relationship is clear: <b>The higher the degree of contamination, the lower the achievable performance.<\/b> <\/p><p><br>To illustrate this, it can be compared to dirty glasses\u2014even minor impurities significantly impair vision. Applied to PV modules, this means that even light contamination can measurably reduce energy conversion. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5f7e633 e-con-full e-flex e-con e-child\" data-id=\"5f7e633\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e41d635 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"e41d635\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_rotateZ_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_tablet&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_mobile&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" 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><strong>Further Technical Article<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f894d09 elementor-widget elementor-widget-heading\" data-id=\"f894d09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Solar Panel Cleaning: How Often Is It Really Necessary?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c3ee1bc e-transform elementor-widget elementor-widget-text-editor\" data-id=\"c3ee1bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_rotateZ_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_tablet&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_mobile&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" 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>How often cleaning is actually worthwhile depends heavily on location, environmental conditions, and system type. In this article, you will learn which cleaning intervals have proven effective in practice. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d4cb75 elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"3d4cb75\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/how-often-should-solar-panels-be-cleaned\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn more<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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<div class=\"elementor-element elementor-element-f8e31a6 e-flex e-con-boxed e-con e-parent\" data-id=\"f8e31a6\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-416925d elementor-widget elementor-widget-heading\" data-id=\"416925d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">At what point does contamination become economically relevant?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bea412 elementor-widget elementor-widget-text-editor\" data-id=\"7bea412\" 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><strong>Pascal Kierstein:<\/strong> The economic relevance of contamination is highly location-dependent and cannot be defined across the board using fixed threshold values.<\/p><p><br>In practice, however, it is evident that systems in exposed locations\u2014for example, on agricultural operations, in industrial environments, or near forests\u2014become contaminated significantly faster and more heavily and consequently require more frequent cleaning.<\/p><p><br>Additionally, location-specific global irradiation must be considered: in regions with high irradiation, contamination has a more immediate and stronger impact on energy yield and thus on profitability.<\/p><p>Therefore, <b>a site-specific assessment considering environmental conditions<\/b> and yield data is always essential.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cf13c96 elementor-widget elementor-widget-heading\" data-id=\"4cf13c96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How economically viable are cleaning measures really?\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebe8003 elementor-widget elementor-widget-text-editor\" data-id=\"ebe8003\" 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><strong>Pascal Kierstein:<\/strong> The return on investment of cleaning measures is often more quantifiable in practice than for other maintenance components, as the impact on energy yield is directly measurable.<\/p><p><br>Regardless, both cleaning measures and other maintenance work are essential for the long-term operational safety and longevity of the system.<\/p><p><br>While <b>cleaning primarily optimizes current yield,<\/b> <b>other maintenance measures serve particularly to prevent damage<\/b> and sustainably preserve the value of the system.<\/p><p><br>Especially with larger commercial systems, even small percentage performance losses can have significant economic impacts.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-679b922 e-con-full e-flex e-con e-child\" data-id=\"679b922\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5c414ac e-transform elementor-widget elementor-widget-text-editor\" data-id=\"5c414ac\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_rotateZ_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_tablet&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_mobile&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" 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><strong>Further Technical Article<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32dfae8 elementor-widget elementor-widget-heading\" data-id=\"32dfae8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How much does PV cleaning cost \u2013 and when does it truly pay off?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1feda69 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"1feda69\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_rotateZ_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_tablet&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_mobile&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" 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>Which factors influence costs and when professional cleaning is economically worthwhile is explained in detail in our article on PV cleaning costs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8af59f5 elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"8af59f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/increased-safety-through-the-use-of-a-solar-cleaning-robot\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn more<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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<div class=\"elementor-element elementor-element-4a2fc6b e-flex e-con-boxed e-con e-parent\" data-id=\"4a2fc6b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b56db0c elementor-widget elementor-widget-heading\" data-id=\"b56db0c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Cleaning as an Integral Part of Maintenance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c73b6a2 elementor-widget elementor-widget-text-editor\" data-id=\"3c73b6a2\" 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><strong>Pascal Kierstein:<\/strong> Yes, maintenance without regular cleaning must be considered incomplete from a technical perspective.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7f49ba elementor-widget elementor-widget-image\" data-id=\"b7f49ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"2560\" height=\"867\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1.jpg\" class=\"attachment-full size-full wp-image-26439\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1.jpg 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1-300x102.jpg 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1-1024x347.jpg 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1-768x260.jpg 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1-1536x520.jpg 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2025\/09\/header-bp-solaranlage-reinigen-wie-oft-3840x1300-1-2048x694.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\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 class=\"elementor-element elementor-element-e6b77c6 elementor-widget elementor-widget-text-editor\" data-id=\"e6b77c6\" 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><b>Cleaning is an integral part of maintenance<\/b>, as both operationally relevant components\u2014for example, inverter fans\u2014and generator surfaces are directly affected.<\/p><p><br>Contamination can impair cooling and lead to thermal stress, while contaminated modules directly reduce energy yield.<\/p><p><br>Thus, cleaning affects both operational safety and system performance and is therefore a mandatory component of proper maintenance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fce0969 elementor-widget elementor-widget-heading\" data-id=\"fce0969\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Modern Maintenance Concepts and Recommendations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8800bdd elementor-widget elementor-widget-heading\" data-id=\"8800bdd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Which developments are currently changing PV maintenance?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2266b36 elementor-widget elementor-widget-text-editor\" data-id=\"2266b36\" 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><strong>Pascal Kierstein:<\/strong> Currently, in the field of PV system maintenance and upkeep, there is a <b>clear trend toward digitalization, automation, and data-based maintenance<\/b>.<\/p><p> <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a5343d elementor-widget elementor-widget-image\" data-id=\"9a5343d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"867\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-27759\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-inspizierung-3840x1300-1-2048x693.webp 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\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 class=\"elementor-element elementor-element-18a3343 elementor-widget elementor-widget-text-editor\" data-id=\"18a3343\" 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>A key development focus is on so-called <b>predictive maintenance<\/b>: through the use of AI and data analysis, operational data is continuously evaluated to detect faults early and prevent unplanned outages.<\/p><p><br>In parallel, <b>drone-based and image-based inspection methods<\/b> are gaining increasing importance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b557824 elementor-widget elementor-widget-heading\" data-id=\"b557824\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">From reactive to proactive and data-driven strategy?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b600c2 elementor-widget elementor-widget-text-editor\" data-id=\"1b600c2\" 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>Using thermography and AI-supported analysis, defects, contamination, or hotspots can be identified quickly and across large areas\u2014significantly more efficiently than traditional manual inspections. Furthermore, the market is developing toward automated and integrated O&#038;M concepts: remote monitoring, real-time data analysis, and semi-autonomous cleaning systems enable condition-based maintenance instead of rigid maintenance intervals. <\/p><p><br>In summary, <strong>maintenance is increasingly shifting from a reactive to a proactive and data-driven strategy<\/strong> with the goal of maximizing yields and sustainably reducing operating costs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37587c8 elementor-widget elementor-widget-heading\" data-id=\"37587c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What recommendations does an expert give to operators?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13b3c7b elementor-widget elementor-widget-text-editor\" data-id=\"13b3c7b\" 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><strong>Pascal Kierstein:<\/strong> Operators should rely on a <b>structured maintenance and monitoring concept<\/b>, consisting of regular visual inspections, measurements, and needs-based cleaning.<br\/>It is crucial to detect and remedy deviations early.<\/p><p><br>Only through condition-based maintenance and continuous evaluation of yield data can the profitability of the system be secured over the long term.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b0ba1b elementor-widget elementor-widget-heading\" data-id=\"4b0ba1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Which other aspects are important in maintenance?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9661ed elementor-widget elementor-widget-text-editor\" data-id=\"c9661ed\" 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><strong>Pascal Kierstein:<\/strong> In addition to traditional visual inspections, measurements, and cleaning measures, <b>electrical safety and documentation<\/b> are of central importance.<\/p><p><br>This includes regular testing of protective measures, grounding, insulation resistance, and inspection of all DC and AC connections.<br\/>Equally important is seamless monitoring with plausible yield control to detect deviations early.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21cc401 elementor-widget elementor-widget-heading\" data-id=\"21cc401\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Which other aspects are important in maintenance?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47620a7 elementor-widget elementor-widget-text-editor\" data-id=\"47620a7\" 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\tAdditionally, environmental influences, mechanical loads, and the condition of inverters and their cooling should be continuously assessed.\n\nStructured documentation of all inspection and maintenance measures forms the basis for a traceable assessment of system condition and is indispensable from an expert perspective.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab81a84 elementor-widget elementor-widget-image\" data-id=\"ab81a84\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"867\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-27760\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/header-interview-messung-3840x1300-1-2048x693.webp 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\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 class=\"elementor-element elementor-element-661db35 elementor-widget elementor-widget-heading\" data-id=\"661db35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion: Maintenance Without Cleaning Is Not Complete Upkeep<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be486e4 elementor-widget elementor-widget-text-editor\" data-id=\"be486e4\" 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>The interview with Pascal Kierstein clearly shows: maintenance of a PV system is not only relevant for profitability but also belongs to the central operator obligations of a commercial system. Maintenance means far more than an occasional visual inspection. <br><br><\/p><p>Regular cleaning in particular plays a crucial role for:<\/p><ul><li>the profitability of the system<\/li><li>long-term performance<\/li><li>operational safety<\/li><li>prevention of consequential damage<\/li><\/ul><p><br>Especially with commercial photovoltaic systems, even minor performance losses can have significant economic impacts.<br\/>Modern maintenance concepts therefore increasingly rely on data-based monitoring, automated processes, and professional cleaning solutions.<\/p><p><br>hyCLEANER supports operators of commercial PV systems with professional cleaning solutions that sustainably improve yield, operational safety, and long-term profitability. With our <a href=\"https:\/\/hycleaner.de\/en\/loss-calculator\/\">Solar Loss Calculator<\/a>, operators can quickly and easily assess the potential yield deficit of their system. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3fc73b2 elementor-widget elementor-widget-heading\" data-id=\"3fc73b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">About the Interview Partner\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4473117 elementor-widget elementor-widget-text-editor\" data-id=\"4473117\" 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><a href=\"https:\/\/www.linkedin.com\/in\/pascal-kierstein-7461b8236\/\" target=\"_blank\" rel=\"noopener\"><strong>Pascal Kierstein<\/strong><\/a> assists companies and system operators with technical assessment, analysis, and evaluation of photovoltaic systems. His areas of activity include damage reports, cause analyses, assessment of yield losses, and technical evaluation of maintenance and upkeep measures. <br><br><\/p><p>He is a <a href=\"https:\/\/www.solarwirtschaft.de\/\" target=\"_blank\" rel=\"noopener\"><strong>certified photovoltaic expert of the German Solar Association<\/strong><\/a> (BSW) and a <a href=\"https:\/\/vds.de\/zertifikate\/zertifikat\/7FC477BC\" target=\"_blank\" rel=\"noopener\"><strong>VdS-recognized expert for photovoltaic systems<\/strong><\/a>. In his daily practice, he supports companies in assessing system conditions, damage, and technical anomalies. <\/p><p><br>Further information: <a href=\"https:\/\/kierstein.info\/\" target=\"_blank\" rel=\"noopener\"><strong>kierstein.info<\/strong><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5cfbcb8 elementor-widget elementor-widget-image\" data-id=\"5cfbcb8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/hycleaner.de\/en\/contact\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"667\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-scaled.webp\" class=\"attachment-full size-full wp-image-27756\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-300x78.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-1024x267.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-768x200.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-1536x400.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2024\/06\/banner-interview-3840x1000-1-2048x533.webp 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-74b3339c e-flex e-con-boxed e-con e-parent\" data-id=\"74b3339c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6852b94b faq elementor-widget elementor-widget-heading\" data-id=\"6852b94b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ: Maintenance and Cleaning of PV Systems<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-39e04f8b elementor-widget elementor-widget-n-accordion\" data-id=\"39e04f8b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9710\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9710\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How often should a PV system be maintained? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9710\" class=\"elementor-element elementor-element-5c96aa2e e-con-full e-flex e-con e-child\" data-id=\"5c96aa2e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-216045dc elementor-widget elementor-widget-text-editor\" data-id=\"216045dc\" 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>A PV system should be inspected regularly to detect performance losses, technical defects, and safety risks early. From an expert perspective, at least one annual visual and functional inspection is recommended. Additionally, yield data should be continuously monitored and the system cleaned as needed. For commercial systems, an individual maintenance concept may be advisable.   <\/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\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9711\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9711\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How strongly does contamination affect the yield of a PV system? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9711\" class=\"elementor-element elementor-element-38314bea e-con-full e-flex e-con e-child\" data-id=\"38314bea\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f209906 elementor-widget elementor-widget-text-editor\" data-id=\"2f209906\" 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>Contamination can significantly reduce the energy yield of a PV system. How much performance decreases depends on factors including location, environmental influences, and degree of contamination. Systems on agricultural operations, in industrial areas, or near forests are particularly affected. Even light deposits can reduce solar irradiation on the modules and thus lead to reduced yields.   <\/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\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9712\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9712\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What does maintenance of a PV system cost? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9712\" class=\"elementor-element elementor-element-2144d6e e-con-full e-flex e-con e-child\" data-id=\"2144d6e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-51080b2 elementor-widget elementor-widget-text-editor\" data-id=\"51080b2\" 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>The costs for maintenance of a PV system depend on factors such as system size, accessibility, location, and scope of inspections. Typical maintenance measures include visual inspections, electrical measurements, monitoring, and, if necessary, module cleaning. For commercial systems, individual consideration is recommended, as even minor performance losses can have significant economic impacts.  <\/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\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9713\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9713\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is maintenance of a PV system mandatory? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9713\" class=\"elementor-element elementor-element-773de32 e-con-full e-flex e-con e-child\" data-id=\"773de32\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3a3d370 elementor-widget elementor-widget-text-editor\" data-id=\"3a3d370\" 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>Commercial operators of PV systems bear responsibility for the operational safety and proper condition of their system. Regular maintenance helps detect risks, technical damage, and performance losses early. For private operators as well, regular inspection is advisable to avoid yield losses and preserve the system&#8217;s lifespan over the long term.  <\/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\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13a68ea4 elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"13a68ea4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/hycleaner.de\/en\/faq\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">All FAQs<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8a9092 elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"a8a9092\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/hycleaner.de\/en\/blog\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Back to the blog overview<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\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>Why is the maintenance of a PV system so important? Expert Pascal Kierstein explains how cleaning, monitoring, and maintenance secure yield and profitability. <\/p>\n","protected":false},"author":10,"featured_media":27757,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[116],"tags":[305,304,303],"class_list":["post-27748","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-expert-knowledge","tag-interview","tag-maintenance","tag-pv-system-cleaning"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PV System Maintenance: Why Cleaning Is Also Crucial<\/title>\n<meta name=\"description\" content=\"Why is the maintenance of a PV system important? 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