{"id":26179,"date":"2025-05-16T09:18:03","date_gmt":"2025-05-16T07:18:03","guid":{"rendered":"https:\/\/fvcomponentes.com\/?p=26179"},"modified":"2025-05-16T11:34:31","modified_gmt":"2025-05-16T09:34:31","slug":"how-to-charge-your-electric-vehicle-only-with-solar-surplus-and-the-fronius-wattpilot-charger","status":"publish","type":"post","link":"https:\/\/fvcomponentes.com\/en\/como-cargar-tu-vehiculo-electrico-solo-con-el-excedente-solar-y-el-cargador-fronius-wattpilot\/","title":{"rendered":"How to charge your electric vehicle only with solar surplus and the Fronius Wattpilot charger"},"content":{"rendered":"

How to charge only with solar surplus with your Fronius Wattpilot charger.<\/h2>\n\n\n\n

If you have batteries in your Fronius GEN24 inverter and you want to know how to set up your Fronius Wattpilot charger so that DO NOT use the battery<\/strong> to charge your electric vehicle and that ONLY use the surplus<\/strong> solar photovoltaic, you're in the right place... In this post we answer the query of one of our followers and explain how to configure your Fronius Wattpilot so that it does not use the battery when you have to charge your electric car.<\/p>\n\n\n\n

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Configure your Wattpilot charger to avoid using the battery<\/h2>\n\n\n\n

To charge your electric vehicle only with the solar surplus, you just have to connect to the Fronius Solar.wattpilot APP to enter the configuration of your Fronius Wattpilot charger and follow the steps below;<\/p>\n\n\n\n

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Step-by-step guide to configure the Wattpilot charger for solar charging:<\/h3>\n\n\n\n
<\/div>\n\n\n\n
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Step 1: Settings > Cost optimisation<\/h4>\n\n\n\n

The first step after connecting with our smartphone to the Wattpilot charger is to enter the Solar.Wattpilot application and click on \"Cost optimisation\".<\/p>\n<\/div><\/div>\n\n\n\n

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Step 2: Cost optimisation > Available options<\/h4>\n\n\n\n

Once inside \"Cost optimisation\" we see at the bottom 4 options that we are interested in;<\/p>\n\n\n\n

Use surplus PV<\/strong>This option must be activated<\/strong>This way we will be able to charge our car using the solar surplus. It is the first step but not the only one...<\/p>\n\n\n\n

Afterwards, we go to Inverter\/Smart Meter IP<\/p>\n<\/div><\/div>\n\n\n\n

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Step 3: Inverter\/Smart Meter IP<\/h4>\n\n\n\n

It will not be the norm, but if you have several Fronius inverters in your installation, you will need to select the one you will use to charge your electric vehicle with the solar surplus. If you only have one inverter, you will not have to touch anything.<\/p>\n\n\n\n

Then we enter the PV battery limit values.<\/p>\n<\/div><\/div>\n\n\n\n

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Step 4: Limit values of the PV battery<\/h4>\n\n\n\n

The next step will be to disable the option that enables downloading<\/strong> of the solar battery of our photovoltaic installation. If we leave it activated, we can set a maximum permitted discharge percentage and limit this discharge in the central hours of the day, for example if we know for sure that our battery will be fully charged or with the possibility of charging later with the surplus.<\/p>\n\n\n\n

Then we go to the last step; Surplus PV<\/p>\n<\/div><\/div>\n\n\n\n

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Step 5: Surplus VP<\/h4>\n\n\n\n

This step is one of the most important, as at certain times, we will not have enough photovoltaic surplus to start charging our electric car. It is not enough to have 10W-300W, as a minimum we have to reach an intensity of 6A (1.38 Kw) which is generally the minimum required by electric cars. Although the recommended value is the default value, we can modify it as we wish if necessary.<\/p>\n\n\n\n

Now... If I don't reach that initial power level, what happens to the charge of our car?<\/p>\n\n\n\n

Prefer network consumption<\/strong>Select this option ONLY IF YOU CANNOT DUMP SURPLUSES<\/strong>. This option allows you to charge your electric car with the electricity grid + solar surplus without feeding into the grid<\/strong>If you still have surpluses while charging, it does not inject them into the grid. This is the option you have to tick if you have a 0 discharge.<\/p>\n\n\n\n

Standard:<\/strong> This option allows the electric car to be charged with the electricity grid + solar surplus WITH feed-in tariffs<\/strong>. This will be the most common option and allows grid-supported charging as soon as you have some solar surplus. When the solar surplus exceeds what the car is capable of charging, it dumps the surplus to the grid. It would be like the \"Prefer grid consumption\" option but allowing you to dump the surplus.<\/p>\n\n\n\n

No no... I always have a lot of surplus solar energy... In that case;<\/p>\n\n\n\n

Prefer grid injection<\/strong>If you are sure that you will always have sufficient surplus (\"Initial power level\") to charge the car, this is the option to tick. ONLY uses the surplus to charge the electric vehicle.<\/strong> (once the \"Initial power level\" has been reached) and if there are surpluses, it feeds them back into the grid. However, as long as the \"Initial power level\" is not reached, the surplus is fed back into the grid.<\/p>\n<\/div><\/div>\n\n\n\n

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EXTRA Step: Priority Electric Vehicle<\/strong> o Battery <\/strong>Fronius Reserve \/ B&R<\/h4>\n\n\n\n

If we also want to give preference for electric vehicle charging<\/strong>In the \"Vehicle unloading\" section, we must set the \"Vehicle unloading\" to a 20%. So that once the 20% State-of-charge on Fronius Battery Backup<\/strong> or B&D, charging priority is given to the electric vehicle. Let's say that is the minimum charge value of our solar installation necessary for us to start charging the car.<\/strong>. For a better understanding we will give an example;<\/p>\n\n\n\n

Example; <\/strong><\/p>\n\n\n\n

We set the parameter \"Vehicle unloading <\/strong>to the 20% and connect our vehicle to the charger.:<\/strong><\/p>\n\n\n\n

If the Fronius Reserve \/ B&D battery is at 10%:<\/strong> The Fronius Reserve \/ B&D battery is given charging priority over the car battery.<\/p>\n\n\n\n

If the Fronius Reserve \/ B&D battery is at 30%:<\/strong> Charging priority is given to the car battery over the Fronius Reserve \/ B&D battery.<\/p>\n\n\n\n

<\/p>\n<\/div><\/div>\n\n\n\n

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So that's it, I hope this guide will answer all your questions and that you will get the most out of your Fronius GEN24 inverter, your Fronius Wattpilot charger and very soon... your new Fronius Reserva battery.<\/p>","protected":false},"excerpt":{"rendered":"

C\u00f3mo cargar solo con excedentes solares con tu cargador Fronius Wattpilot. Si en tu inversor Fronius GEN24 tienes bater\u00edas y quieres saber como configurar tu cargador Fronius Wattpilot para que NO utilice la bater\u00eda para cargar tu veh\u00edculo el\u00e9ctrico y que SOLO utilice el excedente solar fotovoltaico, est\u00e1s en el lugar indicado… En este post […]<\/p>\n","protected":false},"author":1,"featured_media":26181,"comment_status":"closed","ping_status":"closed","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":"set","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":[1004,1],"tags":[],"class_list":["post-26179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manuales-tutoriales-solares","category-general"],"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/posts\/26179","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=26179"}],"version-history":[{"count":23,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/posts\/26179\/revisions"}],"predecessor-version":[{"id":26235,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/posts\/26179\/revisions\/26235"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/media\/26181"}],"wp:attachment":[{"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/media?parent=26179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/categories?post=26179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fvcomponentes.com\/en\/wp-json\/wp\/v2\/tags?post=26179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}