{"id":7565,"date":"2024-03-26T10:44:34","date_gmt":"2024-03-26T09:44:34","guid":{"rendered":"https:\/\/www.aurora-h2020.eu\/?post_type=eu-news&#038;p=7565"},"modified":"2024-03-26T12:47:28","modified_gmt":"2024-03-26T11:47:28","slug":"how-to-manage-surpluses-photovoltaics","status":"publish","type":"eu-news","link":"https:\/\/www.aurora-h2020.eu\/de\/eu-news\/how-to-manage-surpluses-photovoltaics\/","title":{"rendered":"How to manage photovoltaic surpluses?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7565\" class=\"elementor elementor-7565\" data-elementor-post-type=\"eu-news\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5240463 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5240463\" data-element_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-dcb5a0d\" data-id=\"dcb5a0d\" data-element_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-8d7ec60 elementor-widget elementor-widget-text-editor\" data-id=\"8d7ec60\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 17-06-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"font-weight: 400\">When it comes to designing a photovoltaic installation, the focus is on module efficiency, orientation, optimal tilt, and kWh\/kWp generation potential&#8230; But do we really know how to make the most of the kWh we generate?<\/span><\/p><p><span style=\"font-weight: 400\">In most residential photovoltaic installations, we encounter a problem: the photovoltaic production curve is completely opposite to our consumption curve. Typically, we produce more when we are not at home.<\/span><\/p><p><span style=\"font-weight: 400\">In the example above, we observe how consumption peaks during the early and late hours of the day.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73fb8f3 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"73fb8f3\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 17-06-2024 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\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=\"800\" height=\"453\" src=\"https:\/\/www.aurora-h2020.eu\/wp-content\/uploads\/2024\/03\/Captura-de-ecra-2024-03-26-093314.png\" class=\"attachment-large size-large wp-image-7569\" alt=\"Fotovoltaico_Evora\" srcset=\"https:\/\/www.aurora-h2020.eu\/wp-content\/uploads\/2024\/03\/Captura-de-ecra-2024-03-26-093314.png 846w, https:\/\/www.aurora-h2020.eu\/wp-content\/uploads\/2024\/03\/Captura-de-ecra-2024-03-26-093314-300x170.png 300w, https:\/\/www.aurora-h2020.eu\/wp-content\/uploads\/2024\/03\/Captura-de-ecra-2024-03-26-093314-768x435.png 768w, https:\/\/www.aurora-h2020.eu\/wp-content\/uploads\/2024\/03\/Captura-de-ecra-2024-03-26-093314-18x10.png 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Fig. I - Consumption-production curve.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\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-b18be04 elementor-widget elementor-widget-text-editor\" data-id=\"b18be04\" data-element_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<p><span style=\"font-weight: 400\">Specifically, on November 19th, this installation required a total of 29.13 kWh, of which 21 kWh were supplied by the grid, and only 8 kWh were provided by our photovoltaic installation. If we analyze in terms of energy produced, we can see that we generated a total of 27.72 kWh.<\/span><\/p><p><span style=\"font-weight: 400\">That is, we generated 95% of the energy our home needed, but only utilized 29%, with the rest\u2014 the famous energy surplus\u2014 being fed back into the distribution grid.<\/span><\/p><p><strong>How do we compensate for our photovoltaic surpluses?<\/strong><\/p><p>Currently, thanks to Royal Decree 244\/2019, surplus compensation is facilitated. This mechanism allows the electricity provider to offset the energy we inject into the grid with the energy we consume, but it&#8217;s not a 1:1 relationship.<\/p><p>Moreover, this system has some drawbacks. Firstly, compensation is based on the billing period, so surplus generated in one period cannot be used to offset consumption in another. Additionally, compensation is limited to consumed energy, meaning it will never discount more than what we consume. Finally, this compensation only applies to the variable portion, so we still have to pay the fixed part (contracted power, meter rental, taxes&#8230;).<\/p><p>Currently, some suppliers offer so-called virtual batteries, which are essentially a form of virtual wallet. In these cases, the company gradually adds the agreed balance for each kWh we inject into the grid to this wallet. With this balance, we can pay our entire bill, and some suppliers even offer the option to use it to pay bills for other supply points we may have, such as a second residence.<\/p><p>But what alternatives do we have to utilize this production without the need to feed back into the grid? Let&#8217;s explore different options.<\/p><p><strong>How can we utilize our surplus without feeding it back into the grid?<\/strong><\/p><p><span style=\"text-decoration: underline\">Lithium Batteries<\/span><\/p><p>The first option that certainly comes to mind is to install a lithium battery to charge during times of surplus and discharge when photovoltaic production is not sufficient to cover all our consumption.<\/p><p>Thanks to Fronius&#8217; monitoring software, if we already have a photovoltaic installation installed and monitored, we can know exactly how our installation will perform if we install a battery, specifically a BYD battery.<\/p><p>In the previous installation, which started last September, we had a self-consumption percentage of 29%. That is, in these months, 29% of our consumption was provided by the photovoltaic installation, while the remaining 71% was supplied by the grid.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac02e38 elementor-widget elementor-widget-text-editor\" data-id=\"ac02e38\" data-element_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<p>Source: <a href=\"https:\/\/cld.pt\/dl\/download\/f36cd216-b927-4e57-ad72-93dd570bc4fd\/RM56_web_070.pdf\">Renov\u00e1veis Magazine<\/a><\/p>\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>","protected":false},"excerpt":{"rendered":"<p>When it comes to designing a photovoltaic installation, the focus is on module efficiency, orientation, optimal tilt, and kWh\/kWp generation potential&#8230; But do we really know how to make the most of the kWh we generate? In most residential photovoltaic installations, we encounter a problem: the photovoltaic production curve is completely opposite to our consumption [&hellip;]<\/p>","protected":false},"author":5,"featured_media":7566,"template":"","categories":[72,64],"tags":[],"class_list":["post-7565","eu-news","type-eu-news","status-publish","has-post-thumbnail","hentry","category-article","category-portugal"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to manage photovoltaic surpluses? - AURORA H2020<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.aurora-h2020.eu\/de\/eu-news\/how-to-manage-surpluses-photovoltaics\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to manage photovoltaic surpluses? - AURORA H2020\" \/>\n<meta property=\"og:description\" content=\"When it comes to designing a photovoltaic installation, the focus is on module efficiency, orientation, optimal tilt, and kWh\/kWp generation potential&#8230; But do we really know how to make the most of the kWh we generate? 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