{"id":2646,"date":"2021-07-12T10:00:27","date_gmt":"2021-07-12T10:00:27","guid":{"rendered":"https:\/\/helios-om.com\/?p=2646"},"modified":"2021-07-12T13:27:54","modified_gmt":"2021-07-12T13:27:54","slug":"whats-the-point-of-cleaning-solar-panels","status":"publish","type":"post","link":"https:\/\/helios-om.com\/index.php\/2021\/07\/12\/whats-the-point-of-cleaning-solar-panels\/","title":{"rendered":"What\u2019s the point of cleaning solar panels?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2646\" class=\"elementor elementor-2646\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8eed96d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8eed96d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d41efdc\" data-id=\"d41efdc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e957f96 elementor-widget elementor-widget-text-editor\" data-id=\"e957f96\" 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>Helios Solar Operations &amp; Maintenance are here to provide you with some simple advice on whether or not to clean your solar panels.\u00a0Robert Harley, director of Helios with 11 years\u2019 experience in designing, supplying, installing, cleaning and maintaining solar panels for the likes of NHS Trusts, Councils, Universities and a couple of small businesses called Tesco &amp; Amazon.<\/p><p>Here, he gives his views on cleaning solar panels.<\/p><p><strong>So, Robert. What\u2019s the point in cleaning solar panels?<\/strong><\/p><p>Ah! Thanks for the easy opening question! It\u2019s quite a common question as there\u2019s been quite a bit of misinformation thrown around about solar panel cleaning over the years. There\u2019s three main reasons and they\u2019re all to do with increasing output and protecting the investment made into having the panels installed in the first place. They are performance, safety and longevity, let me explain more:<\/p><ul><li><ol><li>Performance. Clean solar panels generate more electricity. Fact. Which in turn generates more money from the feed-in-tariffs (if received) and reduces the owner\u2019s electricity bills. Quite a straight-forward answer this one!<\/li><li>Safety. If a solar cell is covered by heavy soiling for any length of time (usually caused by birds or lichen), all the energy produced by the cells leading into it get dissipated into the covered cell, causing it to heat up, sometimes with pretty disastrous consequences. This is called a hotspot. Cleaning reduces this risk.<\/li><li>Longevity. Obviously if you look after an electrical system, it\u2019s going to last longer. Our cleaning operatives are trained to look for more than just dirty panels when they\u2019re cleaning panels and identify other smaller issues before they become bigger ones, such as missing or loose panel clamps.<\/li><\/ol><\/li><\/ul><p><strong>How often do they need cleaning?<\/strong><\/p><p>That\u2019s a bit more of a difficult question! The easy answer is, when they need cleaning. This might be every 6 months, or every 3 years, depending on the local environmental factors. That\u2019s why at Helios we don\u2019t recommend a clean every year for every system, or try and tie customers into fixed term cleaning contracts right away, because the customer\u2019s panels may not need to be cleaned every year.<\/p><p>What we would suggest however, is when you have your annual system inspection, have the panels inspected at the same time and see if they need cleaning. If in doubt, get a drone up there!<\/p>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3d5d0b1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3d5d0b1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e681df9\" data-id=\"e681df9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0d4bfda elementor-widget elementor-widget-image\" data-id=\"0d4bfda\" 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\" src=\"https:\/\/helios-om.com\/wp-content\/uploads\/elementor\/thumbs\/Inner-roof-during-3-min-696x522-1-pa04g4k9jmkpk8rpd0zgqe37u1mdfuewd7bebaiy7a.jpeg\" title=\"Inner-roof-during-3-min-696&#215;522\" alt=\"Inner-roof-during-3-min-696x522\" loading=\"lazy\" \/>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ea892c4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ea892c4\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3d75747\" data-id=\"3d75747\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8520d4a elementor-widget elementor-widget-text-editor\" data-id=\"8520d4a\" 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>Don\u2019t they get cleaned by the rain?<\/strong><\/p><p>Rain can clean off quite a lot of dirt but panels that are installed in landscape orientation and have a pitch less than 30 degrees will usually need a little help with the cleaning.<\/p><p><strong>How do you clean them?<\/strong><\/p><p>There are a few ways in how we clean them, but our favourite way, which is the safest and provides the best results, is with our specially designed solar panel cleaning robot. With brushes front and back that rotate at 180rpm, it never gets tired or needs a tea break and can clean up to 4000 panels in a day.\u00a0<\/p><p><strong>Do you need special water?<\/strong><\/p><p>Every panel likes a little whisky now and then\u2026seriously though, there\u2019s some companies out there that say you need completely pure water to clean panels. Rubbish. Check your solar panel manufacturer\u2019s installation &amp; maintenance guidelines and you\u2019ll see what they suggest, usually they say that \u201cclean water\u201d should be used.<\/p><p>The only thing that is common across the spectrum of panel manufacturers is that they say that panels should be cleaned either early in the morning, or late in the afternoon to prevent \u201cthermal shock\u201d from happening. This happens when you pour cold water on to hot panels.<\/p><p>I\u2019m still amazed that Helios are the only specialised solar panel cleaning contractor in the UK that actually has the ability to heat the water we use to match that of the panel temperature. We\u2019ve seen panel temperatures exceed 70\u00b0C here in the UK and we can heat our water up to 78\u00b0C if required.<\/p><p><strong>When is the best time to clean them?<\/strong><\/p><p>Depending on how dirty they get, usually before the peak generating months that start in March\/April but the main thing is that you get them cleaned when necessary.<\/p><p>As I said previously, Helios can clean panels throughout the day but if the temperatures start edging above 25\u00b0C, get your cleaning company to stick to early mornings, late afternoons \u2013 or give us a call if they can only work throughout the day.<\/p><p>Also, some panels should only be cleaned at night! These are known as \u201cthin-film\u201d modules which should never be cleaned under electrical load. Fortunately for us, there aren\u2019t too many of these panels installed across the UK.<\/p><p><strong>What does it cost?<\/strong><\/p><p>Ouch! Toughest question yet! It really depends on the size of the system. We\u2019ve got certain fixed costs we first need to take into consideration such as salaries, equipment, travel and usually a cherry picker. So before we\u2019ve even started our costs are quite considerable. Usually, you\u2019d be in the region of \u00a32,000 \u2013 \u00a32,500 for a 250 kWp rooftop system, or up to around \u00a35,000 for a 1MW rooftop system.<\/p><p>The best thing to do though is give us a call on 01525 632238 and we can provide a bespoke price for customers within 48 hrs.<\/p><p><strong>How do you access the roofs?<\/strong><\/p><p>Usually via a cherry picker but we also carry a portable access tower for some lower roofs, commonly found on poultry sheds.<\/p><p><strong>Do you need training to do it?<\/strong><\/p><p>Oh yes! A lot of training is required to be able to carry out this job safely and efficiently. All of our staff are first aid trained, have cherry picker training, working at height training and we have a local farmer with 400 kWp on his site who allows us to train new staff members on a variety of his different roofs before they work on any \u201cpaying\u201d customer\u2019s roof.<\/p><p><strong>What\u2019s the hardest job you\u2019ve done?<\/strong><\/p><p>Now then\u2026they\u2019re all hard in some way but I guess the most soiled panels I\u2019ve come across were on a chicken farm\u2026they\u2019d never been cleaned and were covered in lichen. We had to pre-treat the panels first and then had a couple of days with the robot to get all the lichen off. The results were well worth it though!<\/p><p>\u00a0<\/p>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-46cec9f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"46cec9f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e47e984\" data-id=\"e47e984\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8b7c935 elementor-widget elementor-widget-image\" data-id=\"8b7c935\" 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<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/helios-om.com\/wp-content\/uploads\/2021\/07\/Inner-roof-before-2-560x420-1-300x225.jpeg\" class=\"attachment-medium size-medium wp-image-2650\" alt=\"\" srcset=\"https:\/\/helios-om.com\/wp-content\/uploads\/2021\/07\/Inner-roof-before-2-560x420-1-300x225.jpeg 300w, https:\/\/helios-om.com\/wp-content\/uploads\/2021\/07\/Inner-roof-before-2-560x420-1.jpeg 560w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Before<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-43c3c54 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"43c3c54\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f3f7b2c\" data-id=\"f3f7b2c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-96638a4 elementor-widget elementor-widget-image\" data-id=\"96638a4\" 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<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/helios-om.com\/wp-content\/uploads\/2021\/07\/Inner-roof-after-560x420-1-300x225.jpeg\" class=\"attachment-medium size-medium wp-image-2651\" alt=\"\" srcset=\"https:\/\/helios-om.com\/wp-content\/uploads\/2021\/07\/Inner-roof-after-560x420-1-300x225.jpeg 300w, https:\/\/helios-om.com\/wp-content\/uploads\/2021\/07\/Inner-roof-after-560x420-1.jpeg 560w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">After<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c456f6c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c456f6c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-903d9b6\" data-id=\"903d9b6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d4ffb3 elementor-widget elementor-widget-text-editor\" data-id=\"7d4ffb3\" 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>\u00a0<\/p><p>If you would like to speak to Robert about having your solar panels cleaned, or maintained, you call Helios today on 01525 632238.<\/p>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>It\u2019s quite a common question as there\u2019s been quite a bit of misinformation thrown around about solar panel cleaning over the years. There\u2019s three main reasons and they\u2019re all to do with increasing output and protecting the investment made into having the panels installed in the first place. They are performance, safety and longevity,<\/p>\n","protected":false},"author":1,"featured_media":2648,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[69],"class_list":["post-2646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-panels","tag-cleaning"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What\u2019s the point of cleaning solar panels? - Helios Solar O&amp;M<\/title>\n<meta name=\"description\" content=\"It\u2019s quite a common question as there\u2019s been quite a bit of misinformation thrown around about solar panel cleaning over the years. 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