{"id":27777,"date":"2026-07-06T16:33:31","date_gmt":"2026-07-06T14:33:31","guid":{"rendered":"https:\/\/hycleaner.de\/?p=27777"},"modified":"2026-09-09T11:25:03","modified_gmt":"2026-09-09T09:25:03","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-4f333be7 ausblenden e-flex e-con-boxed e-con e-parent\" data-id=\"4f333be7\" 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-3ee16750 elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"3ee16750\" 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<div class=\"elementor-element elementor-element-1679470d e-con-full e-flex e-con e-parent\" data-id=\"1679470d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4ba12812 e-flex e-con-boxed e-con e-child\" data-id=\"4ba12812\" 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-53998dbb elementor-align-left elementor-widget elementor-widget-breadcrumbs\" data-id=\"53998dbb\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"breadcrumb-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\/\">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-5ccc57de category-tag elementor-widget elementor-widget-post-info\" data-id=\"5ccc57de\" 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\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-62df1283 e-flex e-con-boxed e-con e-child\" data-id=\"62df1283\" 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-297e4484 elementor-widget elementor-widget-text-editor\" data-id=\"297e4484\" 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<strong>Detect defects early, prevent damage<\/strong>\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-24662336 elementor-widget__width-initial elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"24662336\" 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-31c67356 elementor-widget elementor-widget-text-editor\" data-id=\"31c67356\" 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\tFor operators of commercial photovoltaic systems\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-328cb04a elementor-widget elementor-widget-text-editor\" data-id=\"328cb04a\" 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<strong>At a time when renewable energy is becoming increasingly important, the efficiency of photovoltaic systems is crucial. Contamination such as dust, pollen, or bird droppings can significantly reduce module performance.  That is why regular cleaning ensures the system operates reliably and delivers high yields. At the same time, it extends the service life of the modules.  Choosing the right PV cleaning device is therefore a key factor for cost-effective operation.<\/strong>\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-53ae1749 elementor-widget elementor-widget-image\" data-id=\"53ae1749\" 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\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3b74502c e-flex e-con-boxed e-con e-parent\" data-id=\"3b74502c\" 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-476e3456 e-con-full zweispalter e-flex e-con e-child\" data-id=\"476e3456\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-478ea1b7 e-con-full e-flex e-con e-child\" data-id=\"478ea1b7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-7bee8d77 e-con-full e-flex e-con e-child\" data-id=\"7bee8d77\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-02db576 e-con-full infobox e-flex e-con e-child\" data-id=\"02db576\" 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-976b502 elementor-widget elementor-widget-heading\" data-id=\"976b502\" 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-e302397 elementor-widget elementor-widget-text-editor\" data-id=\"e302397\" 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<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-5e604b8a elementor-blockquote--skin-quotation elementor-widget elementor-widget-blockquote\" data-id=\"5e604b8a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"blockquote.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<blockquote class=\"elementor-blockquote\">\n\t\t\t<p class=\"elementor-blockquote__content\">\n\t\t\t\t\"The continuity of maintenance is more decisive than any single measure.\"\t\t\t<\/p>\n\t\t\t\t\t\t\t<div class=\"e-q-footer\">\n\t\t\t\t\t\t\t\t\t\t\t<cite class=\"elementor-blockquote__author\">Pascal Kierstein, zertifizierter Photovoltaik-Sachverst\u00e4ndiger des Bundesverbandes Solarwirtschaft e. V.<\/cite>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/blockquote>\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-82a94b1 elementor-widget elementor-widget-heading\" data-id=\"82a94b1\" 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>\n\t\t<div class=\"elementor-element elementor-element-43b62a41 e-con-full infobox e-flex e-con e-child\" data-id=\"43b62a41\" 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-1a8cfd21 elementor-widget elementor-widget-heading\" data-id=\"1a8cfd21\" 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?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e31fae8 elementor-widget elementor-widget-text-editor\" data-id=\"7e31fae8\" 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-4d4987e3 elementor-widget elementor-widget-heading\" data-id=\"4d4987e3\" 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?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a4b7e79 elementor-widget elementor-widget-text-editor\" data-id=\"3a4b7e79\" 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-53510b0 elementor-widget elementor-widget-image\" data-id=\"53510b0\" 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>\n\t\t\t\t<div class=\"elementor-element elementor-element-28bea22 elementor-widget elementor-widget-heading\" data-id=\"28bea22\" 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-9385b41 elementor-widget elementor-widget-heading\" data-id=\"9385b41\" 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?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f00b1ff elementor-widget elementor-widget-text-editor\" data-id=\"2f00b1ff\" 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-44e3fcbd e-con-full e-flex e-con e-child\" data-id=\"44e3fcbd\" 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-2fdfda8 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"2fdfda8\" 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-261b8fdc elementor-widget elementor-widget-heading\" data-id=\"261b8fdc\" 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-b620b83 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"b620b83\" 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-a6ba8fb elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"a6ba8fb\" 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<div class=\"elementor-element elementor-element-8233cbd elementor-widget elementor-widget-heading\" data-id=\"8233cbd\" 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-0d923a2 elementor-widget elementor-widget-text-editor\" data-id=\"0d923a2\" 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-1e0451d elementor-widget elementor-widget-image\" data-id=\"1e0451d\" 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<div class=\"elementor-element elementor-element-6df3f1a6 e-con-full e-flex e-con e-child\" data-id=\"6df3f1a6\" 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-385acdd2 elementor-widget elementor-widget-heading\" data-id=\"385acdd2\" 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-9dd3346 elementor-widget elementor-widget-heading\" data-id=\"9dd3346\" 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?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-274e0399 elementor-widget elementor-widget-text-editor\" data-id=\"274e0399\" 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>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>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-f8bfbae e-con-full e-flex e-con e-child\" data-id=\"f8bfbae\" 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-b30f833 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"b30f833\" 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-473aa9f elementor-widget elementor-widget-heading\" data-id=\"473aa9f\" 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-7eb0b89 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"7eb0b89\" 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-35e732b elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"35e732b\" 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<div class=\"elementor-element elementor-element-2c6e499 elementor-widget elementor-widget-heading\" data-id=\"2c6e499\" 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-75f501a elementor-widget elementor-widget-heading\" data-id=\"75f501a\" 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?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac7d425 elementor-widget elementor-widget-text-editor\" data-id=\"ac7d425\" 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-3e929ea elementor-widget elementor-widget-image\" data-id=\"3e929ea\" 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>\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>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>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><p>Regular maintenance, professional monitoring, and needs-based cleaning help to<\/p><ul><li>identify yield losses early<\/li><li>avoid technical damage<\/li><li>increase operational safety<\/li><li>extend the service life of the system<\/li><\/ul><p>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. <\/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>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<div class=\"elementor-element elementor-element-df52bec e-con-full e-flex e-con e-child\" data-id=\"df52bec\" 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-1b9e49de faq elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"1b9e49de\" 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-be0bd97 elementor-widget elementor-widget-n-accordion\" data-id=\"be0bd97\" 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-1990\" 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-1990\" >\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-1990\" class=\"elementor-element elementor-element-bf8151a e-con-full e-flex e-con e-child\" data-id=\"bf8151a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-be285cf elementor-widget elementor-widget-text-editor\" data-id=\"be285cf\" 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-1991\" 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-1991\" >\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-1991\" class=\"elementor-element elementor-element-94e6409 e-con-full e-flex e-con e-child\" data-id=\"94e6409\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-65d4845 elementor-widget elementor-widget-text-editor\" data-id=\"65d4845\" 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-1992\" 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-1992\" >\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-1992\" class=\"elementor-element elementor-element-8e7a0fe e-con-full e-flex e-con e-child\" data-id=\"8e7a0fe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f34080a elementor-widget elementor-widget-text-editor\" data-id=\"f34080a\" 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-1993\" 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-1993\" >\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-1993\" class=\"elementor-element elementor-element-9a823a0 e-con-full e-flex e-con e-child\" data-id=\"9a823a0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de5397e elementor-widget elementor-widget-text-editor\" data-id=\"de5397e\" 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-1994\" 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-1994\" >\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-1994\" class=\"elementor-element elementor-element-456b17d e-con-full e-flex e-con e-child\" data-id=\"456b17d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-703fbc6 elementor-widget elementor-widget-text-editor\" data-id=\"703fbc6\" 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-1995\" 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-1995\" >\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-1995\" class=\"elementor-element elementor-element-203f4d1 e-con-full e-flex e-con e-child\" data-id=\"203f4d1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7ffa23a elementor-widget elementor-widget-text-editor\" data-id=\"7ffa23a\" 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<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Which defects occur most frequently in PV systems?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Common defects include faulty DC cabling, damaged plug connections, insufficient grounding systems, contamination of the modules, and problems with inverters.\"}},{\"@type\":\"Question\",\"name\":\"Can contamination cause hotspots?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Localized contamination can lead to partial shading and promote the development of hotspots.\"}},{\"@type\":\"Question\",\"name\":\"How can performance losses be identified early?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Through professional monitoring, regular yield checks, and comparison with site-specific irradiation values.\"}},{\"@type\":\"Question\",\"name\":\"Possible consequences include reduced yields, hotspots, material damage, inverter failures, and safety risks.\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Through professional monitoring, regular yield checks, and comparison with site-specific irradiation values.\"}},{\"@type\":\"Question\",\"name\":\"How important is cleaning for operational safety?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Contamination not only affects the yield but can also impair the cooling of technical components and thereby promote consequential damage.\"}},{\"@type\":\"Question\",\"name\":\"Why is monitoring so important for PV systems?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Monitoring helps to identify performance deviations and technical anomalies early and avoid economic damage.\"}}]}<\/script>\n\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-63da3dc e-con-full e-flex e-con e-child\" data-id=\"63da3dc\" 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-3f60b86 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"3f60b86\" 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<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-check-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm0 48c110.532 0 200 89.451 200 200 0 110.532-89.451 200-200 200-110.532 0-200-89.451-200-200 0-110.532 89.451-200 200-200m140.204 130.267l-22.536-22.718c-4.667-4.705-12.265-4.736-16.97-.068L215.346 303.697l-59.792-60.277c-4.667-4.705-12.265-4.736-16.97-.069l-22.719 22.536c-4.705 4.667-4.736 12.265-.068 16.971l90.781 91.516c4.667 4.705 12.265 4.736 16.97.068l172.589-171.204c4.704-4.668 4.734-12.266.067-16.971z\"><\/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\">Last technically reviewed on 09.09.2026 by Josha Kneiber, Managing Director hyCLEANER<\/span>\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<div class=\"elementor-element elementor-element-3c553759 e-con-full e-flex e-con e-child\" data-id=\"3c553759\" 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-5035d06f elementor-widget elementor-widget-heading\" data-id=\"5035d06f\" 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-363b6bb8 elementor-widget elementor-widget-text-editor\" data-id=\"363b6bb8\" 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-b9c43c2 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"b9c43c2\" 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<\/div>\n\t\t<div class=\"elementor-element elementor-element-126b00fd e-con-full e-flex e-con e-child\" data-id=\"126b00fd\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:30,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t<div class=\"elementor-element elementor-element-4adf599a e-con-full e-flex e-con e-child\" data-id=\"4adf599a\" 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-1fea2204 elementor-author-box--avatar-yes elementor-author-box--name-yes elementor-widget elementor-widget-author-box\" data-id=\"1fea2204\" 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\/en\/author\/hycleaner-redaktion\/\" class=\"elementor-author-box__avatar\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/secure.gravatar.com\/avatar\/2c108e61da0301071dd01568c29fa1d5e19965c4ed015a1f19a84e74a9e3be25?s=200&#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\/en\/author\/hycleaner-redaktion\/\">\n\t\t\t\t\t\t<span class=\"elementor-author-box__name\">\n\t\t\t\t\t\t\thyCLEANER Redaktion\t\t\t\t\t\t<\/span>\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-53bfaa24 elementor-widget elementor-widget-text-editor\" data-id=\"53bfaa24\" 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\tPublished: 06.07.2026<br\/>Last reviewed: 09.09.2026<br\/>Reading time:  6 Minuten<br>\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-22c54ea3 elementor-widget elementor-widget-html\" data-id=\"22c54ea3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script>document.addEventListener(\"DOMContentLoaded\", function () {\n  const button = document.querySelector(\"#chatgpt-summary a\");\n\n  if (!button) return;\n\n  const url = encodeURIComponent(window.location.href);\n  const prompt = encodeURIComponent(\n    \"Fasse diese Webseite in Stichpunkten zusammen: \"\n  );\n\n  button.href = \"https:\/\/chatgpt.com\/?q=\" + prompt + url;\n  button.target = \"_blank\";\n  button.rel = \"noopener\";\n});\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-524d87fe elementor-align-justify elementor-widget__width-inherit chatgpt-summary elementor-widget elementor-widget-button\" data-id=\"524d87fe\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"chatgpt-summary\" 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-size-sm\" role=\"button\">\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\">AI summary<\/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<div class=\"elementor-element elementor-element-41e6b1a9 e-con-full e-flex e-con e-child\" data-id=\"41e6b1a9\" 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-7800ff30 elementor-toc--content-ellipsis elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"7800ff30\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;],&quot;exclude_headings_by_selector&quot;:&quot;.weiter-artikel&quot;,&quot;no_headings_message&quot;:&quot;Es wurden keine \\u00dcberschriften auf dieser Seite gefunden.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__7800ff30\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><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><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__7800ff30\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><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><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__7800ff30\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\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>\n\t\t<div class=\"elementor-element elementor-element-70efd7a3 e-con-full e-flex e-con e-child\" data-id=\"70efd7a3\" 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-7532466a elementor-widget elementor-widget-heading\" data-id=\"7532466a\" 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 badly is your system affected?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40420b54 elementor-widget elementor-widget-text-editor\" data-id=\"40420b54\" 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>Calculate your individual yield loss with the hyCLEANER solar loss calculator.<\/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-158a0271 elementor-align-left elementor-widget__width-inherit button elementor-widget elementor-widget-button\" data-id=\"158a0271\" 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\/loss-calculator\/\">\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\">Calculate Now<\/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<div class=\"elementor-element elementor-element-d34fc6 e-con-full e-flex e-con e-child\" data-id=\"d34fc6\" 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-548e9848 elementor-widget elementor-widget-heading\" data-id=\"548e9848\" 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\">Individual Offer<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19df9992 elementor-widget elementor-widget-text-editor\" data-id=\"19df9992\" 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>We recommend the economically right cleaning concept for your 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-5573007b elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"5573007b\" 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\/cleaning-robots\/individual-offer\/\" target=\"_blank\">\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\">Request a quote<\/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<\/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-2c720b06 weiter-artikel e-flex e-con-boxed e-con e-parent\" data-id=\"2c720b06\" data-element_type=\"container\" data-e-type=\"container\" id=\"weiter-artikel\" 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-5d0c974d weiter-artikel elementor-widget elementor-widget-heading\" data-id=\"5d0c974d\" 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\">Further technical articles<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-318568c3 e-con-full e-flex e-con e-child\" data-id=\"318568c3\" 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-632bcb7a premium-blog-align-left elementor-widget elementor-widget-premium-addon-blog\" data-id=\"632bcb7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;premium_blog_columns_number&quot;:&quot;33.33%&quot;,&quot;premium_blog_grid&quot;:&quot;yes&quot;,&quot;premium_blog_layout&quot;:&quot;even&quot;,&quot;premium_blog_columns_number_tablet&quot;:&quot;50%&quot;,&quot;premium_blog_columns_number_mobile&quot;:&quot;100%&quot;}\" data-widget_type=\"premium-addon-blog.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t\n\n\t\t\t\t<div class=\"premium-blog-wrap  premium-blog-even\" data-page=\"27777\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"5\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"530\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-artikel-solarkosten-schmutz-860x530-1.webp\" class=\"attachment-full size-full wp-image-30190\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-artikel-solarkosten-schmutz-860x530-1.webp 860w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-artikel-solarkosten-schmutz-860x530-1-300x185.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-artikel-solarkosten-schmutz-860x530-1-768x473.webp 768w\" sizes=\"(max-width: 860px) 100vw, 860px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/how-water-quality-affects-osmosis-cleaning-2\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">What does an uncleaned solar system really cost you?<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/how-water-quality-affects-osmosis-cleaning-2\/\" target=\"_blank\">\n\t\t\t\tWhat does an uncleaned solar system really cost you?\t\t\t<\/a>\n\t\t<\/h2>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\n\t\t\t\t\t<span>22. July 2026<\/span>\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">How much does a dirty solar system cost? Example calculations for agriculture, commercial roofs and ground-mounted systems \u2013 incl. yield losses and cleaning intervals.<\/p>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"5\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"530\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/teaser-neu-prod26-ultimate5-860x530-2.webp\" class=\"attachment-full size-full wp-image-28821\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/teaser-neu-prod26-ultimate5-860x530-2.webp 860w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/teaser-neu-prod26-ultimate5-860x530-2-300x185.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/05\/teaser-neu-prod26-ultimate5-860x530-2-768x473.webp 768w\" sizes=\"(max-width: 860px) 100vw, 860px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/photovoltaic-cleaning-brushes-materials-technology-and-areas-of-application\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Photovoltaic cleaning brushes: materials, technology and areas of application<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/photovoltaic-cleaning-brushes-materials-technology-and-areas-of-application\/\" target=\"_blank\">\n\t\t\t\tPhotovoltaic cleaning brushes: materials, technology and areas of application\t\t\t<\/a>\n\t\t<\/h2>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\n\t\t\t\t\t<span>23. June 2026<\/span>\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">Find out which photovoltaic cleaning brushes are suitable for different systems and what matters when it comes to material, bristles and gentle cleaning.<\/p>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"5\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"530\" src=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-interview-kierstein3-860x530-1.webp\" class=\"attachment-full size-full wp-image-27757\" alt=\"\" srcset=\"https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-interview-kierstein3-860x530-1.webp 860w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-interview-kierstein3-860x530-1-300x185.webp 300w, https:\/\/hycleaner.de\/wp-content\/uploads\/2026\/07\/teaser-interview-kierstein3-860x530-1-768x473.webp 768w\" sizes=\"(max-width: 860px) 100vw, 860px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Maintenance of PV Systems: Why Cleaning Is Also Crucial for Yield and Profitability<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/hycleaner.de\/en\/expert-knowledge\/maintenance-of-pv-systems-why-cleaning-is-also-crucial-for-yield-and-profitability\/\" target=\"_blank\">\n\t\t\t\tMaintenance of PV Systems: Why Cleaning Is Also Crucial for Yield and Profitability\t\t\t<\/a>\n\t\t<\/h2>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\n\t\t\t\t\t<span>15. June 2026<\/span>\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">Why is the maintenance of a PV system so important? Expert Pascal Kierstein explains how cleaning, monitoring, and maintenance secure yield and profitability.<\/p>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\n\t\t\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-7e88e9ce ausblenden e-flex e-con-boxed e-con e-parent\" data-id=\"7e88e9ce\" 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-30459784 elementor-align-left elementor-widget__width-inherit elementor-widget elementor-widget-button\" data-id=\"30459784\" 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>Photovoltaic expert Pascal 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 v28.5 (Yoast SEO v28.5) - 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\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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