{"id":27777,"date":"2026-07-06T16:33:31","date_gmt":"2026-07-06T14:33:31","guid":{"rendered":"https:\/\/hycleaner.de\/?p=27777"},"modified":"2026-07-06T17:14:47","modified_gmt":"2026-07-06T15:14:47","slug":"maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability-2","status":"publish","type":"post","link":"https:\/\/hycleaner.de\/en\/expert-knowledge\/maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability-2\/","title":{"rendered":"Typical Defects in Commercial PV Systems and How Operators Can Avoid Them"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"27777\" class=\"elementor elementor-27777 elementor-27775\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4a77aa85 e-con-full e-flex e-con e-parent\" data-id=\"4a77aa85\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4584d1a3 e-con-full e-flex e-con e-child\" data-id=\"4584d1a3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-665d0b51 elementor-widget elementor-widget-image\" data-id=\"665d0b51\" 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-kierstein2-teil2-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-29703\" alt=\"Photovoltaic Expert Pascal Kierstein\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein2-teil2-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein2-teil2-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein2-teil2-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein2-teil2-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein2-teil2-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/header-interview-kierstein2-teil2-3840x1300-1-2048x693.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-6cfe5250 e-flex e-con-boxed e-con e-child\" data-id=\"6cfe5250\" 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<div class=\"elementor-element elementor-element-35d1b9b7 e-flex e-con-boxed e-con e-child\" data-id=\"35d1b9b7\" 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-4bde6848 category-tag elementor-widget elementor-widget-post-info\" data-id=\"4bde6848\" 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<a href=\"https:\/\/hycleaner.de\/en\/tag\/defects\/\" class=\"elementor-post-info__terms-list-item\">Defects<\/a>, <a href=\"https:\/\/hycleaner.de\/en\/tag\/interview\/\" class=\"elementor-post-info__terms-list-item\">Interview<\/a>, <a href=\"https:\/\/hycleaner.de\/en\/tag\/pv-systems\/\" class=\"elementor-post-info__terms-list-item\">PV Systems<\/a>\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<\/ul>\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-2221486a category-tag ausblenden elementor-widget elementor-widget-post-info\" data-id=\"2221486a\" 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<\/ul>\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-25548c73 elementor-widget elementor-widget-post-info\" data-id=\"25548c73\" 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-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>Mon 06.07.2026<\/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-9b65b57 elementor-inline-item\">\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-custom\">\n\t\t\t\t\t\t\t\t\t\t5 Minuten\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-621d5d03 e-flex e-con-boxed e-con e-child\" data-id=\"621d5d03\" 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-5bbfea9d elementor-author-box--avatar-yes elementor-author-box--name-yes elementor-widget elementor-widget-author-box\" 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Redaktion\t\t\t\t\t\t<\/h4>\n\t\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-67b70c6e e-flex e-con-boxed e-con e-child\" data-id=\"67b70c6e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1f4577fa elementor-widget elementor-widget-breadcrumbs\" data-id=\"1f4577fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/hycleaner.de\/en\/home\/\">Startseite<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ef26ce6 elementor-widget__width-initial elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"4ef26ce6\" 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\">Typical Defects in Commercial PV Systems and How Operators Can Avoid Them<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3169b063 elementor-widget elementor-widget-text-editor\" data-id=\"3169b063\" 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>In a time when renewable energies are becoming increasingly important, the efficiency of photovoltaic systems is crucial. Contamination such as dust, pollen, or bird droppings can significantly reduce the performance of the modules. <\/strong><strong>Therefore, regular cleaning ensures that the system operates reliably and delivers high yields. At the same time, the service life of the modules is extended. <\/strong><strong>Choosing the right PV cleaning device is therefore a decisive factor for profitable operation.<\/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>Defects in DC cabling, plug connections, and fastenings<\/strong> are among the most common problems with commercial PV systems.<\/li><li>Contamination is among the most frequent <strong>causes of creeping yield losses<\/strong>.<\/li><li><strong>Hotspots, material damage, and accelerated aging<\/strong> can be promoted by localized contamination.<\/li><li>Many technical and economic damages can be avoided through <strong>regular maintenance and cleaning<\/strong>.<\/li><li>Operators frequently significantly underestimate the <strong>financial impact<\/strong> of small performance losses.<\/li><li><strong>Structured monitoring<\/strong> helps to identify anomalies early and avoid consequential damage.<\/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\">Typical Defects from Expert Practice<\/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\">Which problems or defects do you encounter most frequently in commercial PV systems?\n<\/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>In practice, defects in the area of DC cabling, plug connections, as well as professional routing and fastening frequently occur in commercial PV systems. Likewise, contamination, insufficient maintenance, and thermal anomalies in inverters are not uncommon. <\/p><p>In older systems, age-related signs of wear such as module degradation, material fatigue, or problems with outdated components are increasingly evident. Newer systems benefit from technical progress but more frequently show execution and installation defects. <\/p><p>Regardless of the system&#8217;s age, the quality of planning, execution, and maintenance remains decisive.<\/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\">Are there typical \"classics\" that you find again and again?\n<\/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> Yes, certain defects occur repeatedly. These include, in particular, improperly routed or insufficiently fastened DC cables, faulty plug connections, and deficient grounding and equipotential bonding systems. <\/p><p>Also frequently encountered are dirty modules, reduced yields due to shading, and insufficiently maintained inverters. Another classic is a lack of or insufficient monitoring, which often means performance deviations remain undetected for long periods. <\/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\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-29738\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-verkabelung-teil2-3840x1300-1-2048x693.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 or Technical Defect \u2013 Which Weighs Heavier?<\/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\">What role does contamination play compared to technical defects?\n<\/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 is one of the most common causes of reduced yields, while technical defects occur comparatively less frequently but usually have more serious consequences.<\/p><p>Contamination acts continuously and leads to creeping performance reductions. Technical defects, on the other hand, can cause sudden failures. From an expert perspective, both aspects should be considered equally: while defects affect operational safety, contamination significantly influences the ongoing profitability of the system.  <\/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\">How Water Quality Affects Osmosis Cleaning<\/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>Contamination and deposits can only be reliably removed if the water quality is right. Learn why ppm values and water hardness play an important role. <\/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-water-quality-affects-osmosis-cleaning\/\">\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\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\">Can contamination promote further damage?<\/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>Yes. In particular, localized contamination \u2013 for example from bird droppings, leaves, or dust deposits \u2013 can lead to partial shading. <\/p><p><br>This can promote the development of hotspots, where individual cell areas become thermally overloaded. In the long term, this can result in material damage such as cell cracks, delamination, or accelerated degradation. <\/p><p><br>Contamination therefore not only affects the yield but can also shorten the technical service life of the modules.<\/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-802c14b elementor-widget elementor-widget-image\" data-id=\"802c14b\" 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\/06\/teaser-interview-waermebild-teil2-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-29739\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-waermebild-teil2-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-waermebild-teil2-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-waermebild-teil2-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-waermebild-teil2-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-waermebild-teil2-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-waermebild-teil2-3840x1300-1-2048x693.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-6e0b4b1 elementor-widget elementor-widget-heading\" data-id=\"6e0b4b1\" 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\">Which damages would be avoidable?<\/h2>\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\">Which defects can be prevented through regular maintenance and cleaning?\n\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>A significant portion of the defects found in practice would be avoidable.<\/p><p><br>These include contamination-related yield losses, hotspot formation due to partial shading, and thermal problems resulting from dirty or blocked inverter cooling systems.<\/p><p><br>Loose connections, damaged cables, or faulty plug contacts can also be identified early during regular visual inspections before major damage or failures occur.<\/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\">Maintenance of PV Systems: Why Cleaning Is Crucial for Yield and Profitability<\/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>Learn why regular cleaning is an important part of maintaining photovoltaic systems.<\/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\/maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability\/\">\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\">The Underestimated Costs of Small Defects<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c5ebfce elementor-widget elementor-widget-heading\" data-id=\"c5ebfce\" 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 do operators underestimate the financial impact?\n<\/h3>\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>The economic impact is often significantly underestimated. In particular, creeping yield losses due to contamination or minor technical anomalies often go unnoticed for a long time. <\/p><p><br>The need for action is only recognized when major malfunctions occur. By that time, however, significant yield losses have often 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-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 loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"867\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-29740\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-ertrag-teil2-3840x1300-1-2048x693.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-ca61bbe elementor-widget elementor-widget-heading\" data-id=\"ca61bbe\" 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 well do operators recognize performance losses at all?\n<\/h3>\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><strong>Pascal Kierstein:<\/strong> Many operators find it difficult to recognize performance losses without a sound evaluation of monitoring data.<\/p><p><br>Creeping yield losses often remain hidden, especially if comparative values or regular performance analysis are missing. Anomalies are usually only noticed when there are significant drops in yield. <\/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\">The Expert's Most Important Recommendation<\/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\">What is the most important step in avoiding typical damage?\n<\/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> The most important step is the consistent implementation of a structured maintenance and monitoring concept.<\/p><p>Only the combination of regular visual inspections, measurement-based checks, ongoing yield monitoring, and needs-based cleaning makes it possible to identify and rectify deviations early.<\/p><p><br>The continuity of maintenance is more decisive than any single measure.<\/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\/06\/teaser-interview-wartung-teil2-3840x1300-1-scaled.webp\" class=\"attachment-full size-full wp-image-28881\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-wartung-teil2-3840x1300-1-scaled.webp 2560w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-wartung-teil2-3840x1300-1-300x102.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-wartung-teil2-3840x1300-1-1024x347.webp 1024w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-wartung-teil2-3840x1300-1-768x260.webp 768w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-wartung-teil2-3840x1300-1-1536x520.webp 1536w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/06\/teaser-interview-wartung-teil2-3840x1300-1-2048x693.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: Many Damages Would Be Avoidable<\/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: most economically relevant problems with commercial PV systems do not arise suddenly but develop over a longer period. In particular, contamination, undetected performance losses, and minor technical anomalies can significantly impair the profitability of a system. <\/p>\n<p><br>Regular maintenance, professional monitoring, and needs-based cleaning help to<\/p>\n<ul>\n<li>identify yield losses early<\/li>\n<li>avoid technical damage<\/li>\n<li>increase operational safety<\/li>\n<li>extend the service life of the system<\/li>\n<\/ul>\n<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-7b816b0 e-flex e-con-boxed e-con e-parent\" data-id=\"7b816b0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5872087 e-con-full e-flex e-con e-child\" data-id=\"5872087\" 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-dd278a6 faq elementor-widget elementor-widget-heading\" data-id=\"dd278a6\" 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 hyCLEANER EDITORIAL TEAM<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d1c0a4 elementor-author-box--avatar-yes elementor-author-box--name-yes elementor-widget elementor-widget-author-box\" data-id=\"1d1c0a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"author-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-author-box\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/hycleaner.de\/kontakt\/\" target=\"_blank\" class=\"elementor-author-box__avatar\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/secure.gravatar.com\/avatar\/2c108e61da0301071dd01568c29fa1d5e19965c4ed015a1f19a84e74a9e3be25?s=300&#038;d=mm&#038;r=g\" alt=\"Picture of hyCLEANER Redaktion\" loading=\"lazy\">\n\t\t\t\t<\/a>\n\t\t\t\n\t\t\t<div class=\"elementor-author-box__text\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/hycleaner.de\/kontakt\/\" target=\"_blank\">\n\t\t\t\t\t\t<h4 class=\"elementor-author-box__name\">\n\t\t\t\t\t\t\thyCLEANER Redaktion\t\t\t\t\t\t<\/h4>\n\t\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\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-384c0c0 elementor-widget elementor-widget-text-editor\" data-id=\"384c0c0\" 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>The hyCLEANER editorial team<\/strong> brings together internal subject matter experts from various company departments \u2013 from practical application and technical development to sales and customer consulting. Together, they pursue the goal of presenting complex topics related to the cleaning of photovoltaic systems, glass surfaces, and facades in an understandable, practical, and compact way. The content is based on many years of industry experience, technical expertise, and insights from daily use in the field.  <\/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-357f1cb faq elementor-widget elementor-widget-heading\" data-id=\"357f1cb\" 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\">Areas of expertise:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d65aed elementor-widget elementor-widget-text-editor\" data-id=\"6d65aed\" 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:\/\/hycleaner.de\/en\/solar-cleaning\/\">PV cleaning<\/a> | <a href=\"https:\/\/hycleaner.de\/en\/glass-roof-cleaning\/\">Glass and facade cleaning<\/a> | <a href=\"https:\/\/hycleaner.de\/en\/cleaning-robots\/\">Cleaning robotics<\/a> | Industrial cleaning<\/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-27fd71e elementor-widget elementor-widget-text-editor\" data-id=\"27fd71e\" 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>Last technically reviewed: 2026-06-17<\/strong><\/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<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-90ddcdf e-flex e-con-boxed e-con e-parent\" data-id=\"90ddcdf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-0416d8b e-con-full e-flex e-con e-child\" data-id=\"0416d8b\" 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-0ad92e0 faq elementor-widget elementor-widget-heading\" data-id=\"0ad92e0\" 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\">Sources &amp; Further Information<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e795b24 elementor-widget elementor-widget-text-editor\" data-id=\"e795b24\" 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 content of this article is based on an expert interview with photovoltaic expert Pascal Kierstein as well as on publicly available information from leading specialist institutions in the solar industry.<\/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-dcd2440 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"dcd2440\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.solarwirtschaft.de\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">German Solar Association (BSW): Information on photovoltaics, operation, and quality assurance<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/shop.vds.de\/publikation\/vds-3145\/14c34e90-a1ec-4ac7-a246-0999f82911da\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">VdS Schadenverh\u00fctung: Requirements and standards for photovoltaic systems<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.ise.fraunhofer.de\/de\/veroeffentlichungen\/studien\/aktuelle-fakten-zur-photovoltaik-in-deutschland.html\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Fraunhofer Institute for Solar Energy Systems ISE: Current facts on photovoltaics in Germany (as of May 5, 2026)<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\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\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: Defects and Damage 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\"> Which defects occur most frequently in PV systems? <\/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>Common defects include faulty DC cabling, damaged plug connections, insufficient grounding systems, contamination of the modules, and problems with inverters.<\/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\"> Can contamination cause hotspots? <\/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\tYes. Localized contamination can lead to partial shading and promote the development of hotspots. \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\"> How can performance losses be identified early? <\/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>Through professional monitoring, regular yield checks, and comparison with site-specific irradiation values.<\/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\"> Possible consequences include reduced yields, hotspots, material damage, inverter failures, and safety risks. <\/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-53095b3 e-con-full e-flex e-con e-child\" data-id=\"53095b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7d3cf0d elementor-widget elementor-widget-text-editor\" data-id=\"7d3cf0d\" 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>Through professional monitoring, regular yield checks, and comparison with site-specific irradiation values.<\/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-9714\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9714\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How important is cleaning for operational safety? <\/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-9714\" class=\"elementor-element elementor-element-4a13f01 e-con-full e-flex e-con e-child\" data-id=\"4a13f01\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-692a57f elementor-widget elementor-widget-text-editor\" data-id=\"692a57f\" 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 not only affects the yield but can also impair the cooling of technical components and thereby promote consequential damage.<\/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-9715\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9715\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Why is monitoring so important for PV systems? <\/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-9715\" class=\"elementor-element elementor-element-6428ace e-con-full e-flex e-con e-child\" data-id=\"6428ace\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a137619 elementor-widget elementor-widget-text-editor\" data-id=\"a137619\" 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>Monitoring helps to identify performance deviations and technical anomalies early and avoid economic damage.<\/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 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Kierstein explains the most common defects in commercial PV systems and shows how operators can prevent damage.<\/p>\n","protected":false},"author":10,"featured_media":29736,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[116],"tags":[333,305,332],"class_list":["post-27777","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-expert-knowledge","tag-defects","tag-interview","tag-pv-systems"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Typical Defects in Commercial PV Systems | hyCLEANER Blog<\/title>\n<meta name=\"description\" content=\"Typical defects in commercial PV systems: Learn which types of damage occur frequently and how yield losses can be avoided.\" \/>\n<meta name=\"robots\" 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