{"id":43368,"date":"2026-09-12T15:47:47","date_gmt":"2026-09-12T13:47:47","guid":{"rendered":"https:\/\/fvcomponentes.com\/fronius-gen24-pv-point-full-backup-apagon\/"},"modified":"2026-09-12T15:47:47","modified_gmt":"2026-09-12T13:47:47","slug":"fronius-gen24-pv-point-full-backup-power-cut","status":"publish","type":"post","link":"https:\/\/fvcomponentes.com\/en\/fronius-gen24-pv-point-full-backup-apagon\/","title":{"rendered":"Fronius GEN24 Plus during a power cut: PV Point and Full Backup explained"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A conventional grid-connected inverter disconnects as soon as the grid fails: this is mandatory for safety reasons. The <a href=\"https:\/\/fvcomponentes.com\/en\/product-category\/solar-inverters\/hybrid-self-consumption-inverters\/\">Fronius GEN24 Plus<\/a> They feature two backup functions that ensure you still have electricity during a power cut: <strong>PV Point<\/strong> y <strong>Full Backup<\/strong>. They differ in terms of scope, cost and installation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PV Point: basic emergency mode without a battery<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PV Point is a <strong>dedicated power socket<\/strong> which comes directly from the inverter. When the mains supply fails, the GEN24 switches that output within a few seconds and supplies it with solar power (and from the battery, if one is fitted).<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Maximum power: <strong>3 kW<\/strong> single-phase (230 V).<\/li><li>It only works without a battery <strong>whilst the sun is shining<\/strong> and production exceeds consumption at the tap.<\/li><li>When running on battery power, it operates day and night until the reserve SOC is depleted.<\/li><li>It doesn\u2019t power the whole house: just whatever you plug into that socket (fridge, router, light, mobile chargers).<\/li><li>It requires a socket to be fitted by the installer on the PV Point terminals of the inverter. No work is required on the distribution board.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It is the most cost-effective option: it is included in all GEN24 Plus units and all you need to do is wire up the socket and enable it in the settings (Device settings \u2192 Functions and I\/O \u2192 PV Point).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Full Backup: a comprehensive backup for your home<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Full Backup turns the GEN24 Plus into a fully-fledged backup system: when the mains power fails, the inverter <strong>isolate the installation from the mains supply<\/strong> and supplies power to the whole house (or selected circuits), forming its own network.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Requirements:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Compatible high-voltage battery:<\/strong> BYD Battery-Box HVS\/HVM, Fronius Reserva or equivalents from the Fronius list. See <a href=\"https:\/\/fvcomponentes.com\/en\/fronius-gen24-plus-reserve-pro-byd-hvs-hvm-batteries\/\">batteries for the GEN24 Plus<\/a> y <a href=\"https:\/\/fvcomponentes.com\/en\/install-configure-fronius-booking\/\">Fronius Reserve<\/a>.<\/li><li><strong>Switch box<\/strong> (Fronius Backup Box, Enwitec or similar) which physically disconnects the grid and switches the power supply to the home to the inverter.<\/li><li><strong>Fronius Smart Meter<\/strong> installed at the connection point.<\/li><li>Back-up power is limited to the inverter\u2019s rated power (Primo, GEN24: 3\u20136 kW single-phase; Symo, GEN24: 6\u201310 kW three-phase) and to the battery\u2019s maximum current.<\/li><li>In three-phase operation (Symo GEN24), the switchgear must switch all three phases and the inverter generates a balanced three-phase network.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Advantages: automatic switching (between 60 seconds and a few seconds, depending on the settings), solar battery charging during a power cut, automatic return to the mains when power is restored. Disadvantages: the cost of the unit and installation, and the battery must be sized to last through the night.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Which one to choose<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Situation<\/th><th>Recommendation<\/th><\/tr><\/thead><tbody><tr><td>Occasional power cuts \u2013 do you want to keep your fridge and communications running?<\/td><td>PV Point<\/td><\/tr><tr><td>A home without a battery and on a tight budget<\/td><td>PV Point (operates during the day)<\/td><\/tr><tr><td>An area with frequent power cuts or where people work from home<\/td><td>Full Backup with battery<\/td><\/tr><tr><td>Water pumps, heating systems or critical three-phase loads<\/td><td>Three-phase full backup (Symo GEN24 Plus)<\/td><\/tr><tr><td>Actual off-grid installation (not connected to the mains)<\/td><td>It is not the product: use a Victron inverter-charger<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Configuring Full Backup on the inverter<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li>1. GEN24 web interface (Technical mode) \u2192 Device settings \u2192 <strong>Functions and I\/O<\/strong> \u2192 Backup mode: Full Backup.<\/li><li>2. Define the <strong>battery life<\/strong> (Minimum SOC reserved for power cuts, e.g. 20\u201330 %).<\/li><li>3. Configure the digital output that controls the switch box in accordance with the manual.<\/li><li>4. Test: switch off the main circuit breaker and check that the property is still powered and that \u201cBackup mode active\u201d appears on Solar.web.<\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Things you should know<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>During a power cut, the inverter can continue to generate electricity and charge the battery, but it does not feed electricity into the grid (obviously).<\/li><li>If the battery runs out overnight, the system switches off until the sun comes out or the mains supply is restored.<\/li><li>In Full Backup mode, the starting power of motors (pumps, compressors) may exceed that of the inverter: avoid starting several at the same time.<\/li><li>The GEN24 models without \u201cPlus\u201d do not have backup or battery management functions; the Plus feature can be purchased at a later date via a licence.<\/li><\/ul>\n\n\n\n<p><em>FV Componentes is <strong>Fronius authorised technical service centre<\/strong> (Fronius System Partner). If the problem persists after carrying out these checks, please open a ticket at <a href=\"https:\/\/fvcomponentes.com\/en\/technical-support\/\">Technical support<\/a> with the serial number and a screenshot of Solar.web, and we\u2019ll diagnose it.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Differences between PV Point (emergency output without a battery, up to 3 kW) and Full Backup (full backup with a battery and switch box) in the Fronius Primo, Symo and GEN24 Plus inverters, and what you need for each.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1004],"tags":[],"class_list":["post-43368","post","type-post","status-publish","format-standard","hentry","category-manuales-tutoriales-solares"],"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/posts\/43368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/comments?post=43368"}],"version-history":[{"count":0,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/posts\/43368\/revisions"}],"wp:attachment":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/media?parent=43368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/categories?post=43368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/tags?post=43368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}