{"id":13847,"date":"2025-09-06T23:37:25","date_gmt":"2025-09-06T21:37:25","guid":{"rendered":"https:\/\/pvprosolar.de\/?p=13847"},"modified":"2026-10-13T12:21:27","modified_gmt":"2026-10-13T10:21:27","slug":"5-kwh-battery-storage","status":"publish","type":"post","link":"https:\/\/pvprosolar.de\/en\/5-kwh-battery-storage\/","title":{"rendered":"5 kWh Battery Storage: Cost, Technology and Payback"},"content":{"rendered":"<p>A <strong>5 kWh battery storage<\/strong> system is the smallest sensible size for a single-family home with a PV system. It mainly suits households using about 3,000 to 4,000 kWh a year and smaller systems. At PVPro Solar, a BYD HVS 5.1 costs about \u20ac3,800 to \u20ac4,600 extra together with a new PV system. Here you&#8217;ll find who 5 kWh is enough for, how long the battery lasts in the evening, when it pays off and what to look out for.<\/p>\n<p>Want to know whether 5 kWh is enough for your home? <a href=\"https:\/\/pvprosolar.de\/en\/free-photovoltaic-quote\/\">Request your free, no-obligation quote now<\/a>.<\/p>\n<h2>5 kWh Battery Storage: Key Facts at a Glance<\/h2>\n<table>\n<thead>\n<tr>\n<th>Question<\/th>\n<th>Answer<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Suits<\/td>\n<td>households using about 3,000\u20134,000 kWh a year and PV systems up to about 6 kWp<\/td>\n<\/tr>\n<tr>\n<td>Price at PVPro Solar<\/td>\n<td>BYD HVS 5.1: approx. \u20ac3,800\u20134,600 extra on a new PV system, 0% VAT<\/td>\n<\/tr>\n<tr>\n<td>Additional solar power used yourself<\/td>\n<td>approx. 1,000\u20131,200 kWh a year<\/td>\n<\/tr>\n<tr>\n<td>Benefit per year<\/td>\n<td>approx. \u20ac290\u2013350 (at an assumed 37 ct\/kWh)<\/td>\n<\/tr>\n<tr>\n<td>Payback of the battery alone<\/td>\n<td>approx. 11\u201316 years, without electricity price increases<\/td>\n<\/tr>\n<tr>\n<td>Expandable<\/td>\n<td>yes, the BYD HVS can be extended with modules up to 12.8 kWh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Who Is a 5 kWh Battery Enough For?<\/h2>\n<p>HTW Berlin recommends an upper limit of about 1.5 kWh of usable storage capacity per 1,000 kWh of annual consumption. A household using 3,300 kWh therefore ends up at about 5 kWh. A 5 kWh battery suits:<\/p>\n<ul>\n<li>households of one to three people using about 3,000 to 4,000 kWh a year<\/li>\n<li>smaller PV systems or limited roof space<\/li>\n<li>households that mainly want to cover their evening and night base load with solar power<\/li>\n<\/ul>\n<p>With a heat pump, an EV or consumption above 4,500 kWh, a larger battery usually makes more sense. What a 10 kWh battery costs and brings is explained under <a href=\"https:\/\/pvprosolar.de\/en\/10-kwh-battery-storage-price\/\">10 kWh battery storage price<\/a>.<\/p>\n<h2>How Long Does a 5 kWh Battery Last in the Evening?<\/h2>\n<p>5 kWh doesn&#8217;t mean 5 hours. The kilowatt-hour describes the amount of energy stored. How long it lasts depends on what&#8217;s running:<\/p>\n<ul>\n<li><strong>Base load<\/strong> from the fridge, router and standby devices, about 300 to 500 watts: in theory 10 hours or more<\/li>\n<li><strong>A typical evening<\/strong> with cooking, lights, TV and washing machine: a household using 3,000 to 4,000 kWh a year often needs about 4 to 6 kWh from sunset to morning, which a full 5 kWh battery largely covers<\/li>\n<li><strong>Large loads<\/strong> such as an EV or heat pump: empty a 5 kWh battery quickly<\/li>\n<\/ul>\n<p>In summer the battery fills up on almost every sunny day, in winter less often. Over the year, a 5 kWh battery shifts about 1,000 to 1,200 kWh of solar power into the evening.<\/p>\n<h2>5 kWh Battery Storage: Costs<\/h2>\n<p>At PVPro Solar, a BYD HVS 5.1 costs about \u20ac3,800 to \u20ac4,600 extra together with a new PV system and the Fronius GEN24 Plus, including installation and commissioning. Supply and installation on or at residential buildings are subject to 0% VAT.<\/p>\n<p>Online, you&#8217;ll find much lower prices, about \u20ac1,500 to \u20ac3,500 for a 5 kWh battery. However, these usually cover only the device, without installation, connection and commissioning. Small batteries also cost more per kWh than large ones, because the control unit and installation cost about the same. So always compare total prices per usable kWh. Prices for other sizes are under <a href=\"https:\/\/pvprosolar.de\/en\/byd-battery-storage\/\">BYD battery storage<\/a>.<\/p>\n<h2>Is a 5 kWh Battery Worth It?<\/h2>\n<p>A simplified worked example:<\/p>\n<ul>\n<li>Additional solar power used yourself: about 1,000 to 1,200 kWh a year<\/li>\n<li>Benefit per kWh: 37 ct electricity price (assumed) minus 7.70 ct forgone feed-in tariff, i.e. about 29 ct<\/li>\n<li>Benefit per year: about \u20ac290 to \u20ac350<\/li>\n<li>Battery price: about \u20ac3,800 to \u20ac4,600<\/li>\n<\/ul>\n<p>The battery alone therefore pays for itself after about 11 to 16 years, assuming no electricity price increases. If prices rise, it&#8217;s faster. A small battery thus pays off more slowly than the PV system itself. It&#8217;s worth it mainly if you use a lot of power in the evening, are rarely home during the day or value independence. With the planned <a href=\"https:\/\/pvprosolar.de\/en\/eeg-amendment\/\">EEG amendment 2027<\/a>, self-consumption becomes even more important for new systems. A detailed worked example is under <a href=\"https:\/\/pvprosolar.de\/en\/power-storage-for-home\/\">home battery storage<\/a>.<\/p>\n<h2>Your 5 kWh Battery from PVPro Solar<\/h2>\n<h3>BYD HVS 5.1 with Fronius GEN24 Plus<\/h3>\n<p>We install the BYD Battery-Box HVS together with the Fronius GEN24 Plus hybrid inverter. The HVS 5.1 consists of two modules of 2.56 kWh each and can later be extended with up to three more modules to 12.8 kWh if your consumption rises.<\/p>\n<h3>Warranty and Lifespan<\/h3>\n<p>BYD gives a 10-year warranty and guarantees that the battery retains 60% of its usable energy during this period or reaches a minimum energy throughput. For the HVS 5.1, that&#8217;s about 12.5 MWh according to the manufacturer, i.e. about 2,400 full charge cycles. In practice, LFP cells usually last considerably longer.<\/p>\n<h3>Fixed Price and Installation<\/h3>\n<p>Our own certified technicians install the battery, for example in the basement, utility room or garage. You receive a written fixed price and pay according to the 30\/70 model: 30% on order, 70% only after installation.<\/p>\n<h2>AC- or DC-Coupled?<\/h2>\n<ul>\n<li><strong>DC-coupled:<\/strong> the battery connects directly to the hybrid inverter. For new systems, this is the most efficient solution because the power is converted less often. That&#8217;s how we build with Fronius and BYD.<\/li>\n<li><strong>AC-coupled:<\/strong> the battery gets its own battery inverter and is connected to the home grid. It&#8217;s flexible and suits retrofits, but has slightly higher conversion losses.<\/li>\n<\/ul>\n<p>If you already have a PV system, everything about retrofitting is under <a href=\"https:\/\/pvprosolar.de\/en\/retrofitting-a-solar-battery\/\">retrofitting a solar battery<\/a>.<\/p>\n<h2>Backup Power with a 5 kWh Battery<\/h2>\n<p>The battery alone supplies no power during a power cut. With the Fronius GEN24 Plus, there&#8217;s the built-in PV Point backup socket for about \u20ac300 to \u20ac800 extra. Full Backup for the whole house with a transfer switch costs about \u20ac1,200 to \u20ac1,800 and isn&#8217;t available on the smallest inverter power classes. With 5 kWh, the reserve is mainly enough for the fridge, lights and router. More under <a href=\"https:\/\/pvprosolar.de\/en\/solar-backup-power-systems\/\">solar backup power systems<\/a>.<\/p>\n<h2>What to Look for When Buying<\/h2>\n<ul>\n<li><strong>Usable capacity:<\/strong> what matters is how much you can actually use, not the gross figure.<\/li>\n<li><strong>Cell chemistry:<\/strong> lithium iron phosphate (LFP) is considered particularly safe and durable and is now standard.<\/li>\n<li><strong>Warranty:<\/strong> check the guaranteed remaining capacity and minimum energy throughput. According to HTW Berlin, guaranteed remaining capacity ranges from 60 to 85% depending on the manufacturer.<\/li>\n<li><strong>Expandability:<\/strong> a modular battery grows with you if an EV or heat pump is added later.<\/li>\n<li><strong>Location:<\/strong> dry, ideally frost-free and with a load-bearing floor.<\/li>\n<\/ul>\n<h2>Funding for a 5 kWh Battery<\/h2>\n<p>There is no nationwide grant for private batteries, and batteries are not eligible under the Hanover Region&#8217;s Dach-Solar programme. However, 0% VAT applies, and you can finance the battery with the KfW 270 loan, which is a loan and not a grant.<\/p>\n<h2>Advice and Installation from a Specialist<\/h2>\n<p>Whether 5 kWh or a larger solution suits you better, we calculate during the free on-site visit with your real consumption. We install with our own technicians, handle registration with the grid operator and in the Market Master Data Register, and tell you honestly if a battery doesn&#8217;t pay off for you.<\/p>\n<p><a href=\"https:\/\/pvprosolar.de\/en\/free-photovoltaic-quote\/\">Request your free, no-obligation quote now<\/a>, or call us on +49 511 3360603 or message us on WhatsApp at +49 176 2399 8536.<\/p>\n<p><em>As of October 2026. Prices are guide values; you receive the binding fixed price in the written quote.<\/em><\/p>\n        <section class=\"sc_fs_faq sc_card \">\n            <div>\n\t\t\t\t<h3>Is a 5 kWh battery enough for a single-family home?<\/h3>                <div>\n\t\t\t\t\t                    <p>\n\t\t\t\t\t\tFor households using about 3,000 to 4,000 kWh a year, usually yes. HTW Berlin recommends at most about 1.5 kWh of usable capacity per 1,000 kWh of consumption. With an EV, heat pump or higher consumption, a larger battery makes more sense.                    <\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\t\t        <section class=\"sc_fs_faq sc_card \">\n            <div>\n\t\t\t\t<h3>How much does a 5 kWh battery cost?<\/h3>                <div>\n\t\t\t\t\t                    <p>\n\t\t\t\t\t\tAt PVPro Solar, a BYD HVS 5.1 costs about \u20ac3,800 to \u20ac4,600 extra together with a new PV system, including installation. Online prices of \u20ac1,500 to \u20ac3,500 usually cover only the device without installation.                    <\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\t\t        <section class=\"sc_fs_faq sc_card \">\n            <div>\n\t\t\t\t<h3>Is a 5 kWh battery worth it?<\/h3>                <div>\n\t\t\t\t\t                    <p>\n\t\t\t\t\t\tIt shifts about 1,000 to 1,200 kWh of solar power a year into the evening and brings about \u20ac290 to \u20ac350 a year at an assumed 37 ct\/kWh. The battery alone pays for itself after about 11 to 16 years, faster if electricity prices rise.                    <\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\t\t        <section class=\"sc_fs_faq sc_card \">\n            <div>\n\t\t\t\t<h3>How long does a 5 kWh battery last?<\/h3>                <div>\n\t\t\t\t\t                    <p>\n\t\t\t\t\t\tFor the base load of the fridge, router and standby devices, in theory 10 hours or more. A full battery largely covers the typical evening and night consumption of a smaller household of about 4 to 6 kWh.                    <\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\t\t        <section class=\"sc_fs_faq sc_card \">\n            <div>\n\t\t\t\t<h3>How many years does a 5 kWh battery last?<\/h3>                <div>\n\t\t\t\t\t                    <p>\n\t\t\t\t\t\tFor the HVS 5.1, BYD guarantees 10 years with 60% of usable energy or about 12.5 MWh throughput, whichever comes first. That's about 2,400 full charge cycles. In practice, LFP cells usually last longer.                    <\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\t\t        <section class=\"sc_fs_faq sc_card \">\n            <div>\n\t\t\t\t<h3>Can I expand a 5 kWh battery later?<\/h3>                <div>\n\t\t\t\t\t                    <p>\n\t\t\t\t\t\tYes. The BYD HVS 5.1 can be extended with up to three modules to 12.8 kWh. For modules bought later, the warranty runs from their invoice date.                    <\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\t\t\n<script type=\"application\/ld+json\">\n    {\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Is a 5 kWh battery enough for a single-family home?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"For households using about 3,000 to 4,000 kWh a year, usually yes. HTW Berlin recommends at most about 1.5 kWh of usable capacity per 1,000 kWh of consumption. With an EV, heat pump or higher consumption, a larger battery makes more sense.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How much does a 5 kWh battery cost?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"At PVPro Solar, a BYD HVS 5.1 costs about \u20ac3,800 to \u20ac4,600 extra together with a new PV system, including installation. Online prices of \u20ac1,500 to \u20ac3,500 usually cover only the device without installation.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Is a 5 kWh battery worth it?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"It shifts about 1,000 to 1,200 kWh of solar power a year into the evening and brings about \u20ac290 to \u20ac350 a year at an assumed 37 ct\/kWh. The battery alone pays for itself after about 11 to 16 years, faster if electricity prices rise.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How long does a 5 kWh battery last?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"For the base load of the fridge, router and standby devices, in theory 10 hours or more. A full battery largely covers the typical evening and night consumption of a smaller household of about 4 to 6 kWh.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How many years does a 5 kWh battery last?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"For the HVS 5.1, BYD guarantees 10 years with 60% of usable energy or about 12.5 MWh throughput, whichever comes first. That's about 2,400 full charge cycles. In practice, LFP cells usually last longer.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Can I expand a 5 kWh battery later?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Yes. The BYD HVS 5.1 can be extended with up to three modules to 12.8 kWh. For modules bought later, the warranty runs from their invoice date.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t    ]\n}\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>A 5 kWh battery storage system is the smallest sensible size for&#8230;<\/p>\n","protected":false},"author":18,"featured_media":11824,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[489],"tags":[],"class_list":["post-13847","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-costs-funding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>5 kWh Battery Storage: Cost &amp; Payback | PVPro Solar<\/title>\n<meta name=\"description\" content=\"5 kWh battery storage: who is it right for, what drives the cost and how fast does it pay off? 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