{"id":142,"date":"2026-06-06T16:20:00","date_gmt":"2026-06-06T16:20:00","guid":{"rendered":"https:\/\/autark.es\/?page_id=142"},"modified":"2026-09-01T18:23:56","modified_gmt":"2026-09-01T18:23:56","slug":"batteriespeicher-rechner","status":"publish","type":"page","link":"https:\/\/autark.es\/en\/downloads\/batteriespeicher-rechner\/","title":{"rendered":"Battery storage calculator"},"content":{"rendered":"<div class=\"wp-block-group autark-calculator-page is-layout-constrained wp-container-core-group-is-layout-b82fae73 wp-block-group-is-layout-constrained\">\n\n<style>\n.autark-calculator-page{--navy:#13263a;--green:#2f7d62;--mint:#eef7f2;color:var(--navy)}\n.autark-calculator-page .calc-intro{background:var(--mint);padding:clamp(2rem,5vw,4rem);border-radius:28px;margin-bottom:36px}\n.autark-calculator-page .calc-intro h2{font-size:clamp(2rem,4vw,3.2rem);line-height:1.08;color:var(--navy)}\n.autark-calc{padding:clamp(1.5rem,4vw,3rem);border:1px solid #dfe8e3;border-radius:24px;background:#fff;box-shadow:0 16px 45px rgba(19,38,58,.09)}\n.autark-calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}\n.autark-calc label{display:block;font-weight:700;margin-bottom:7px}\n.autark-calc input,.autark-calc select{width:100%;padding:12px 14px;border:1px solid #cbd7d1;border-radius:10px;background:#fff}\n.autark-calc button{margin-top:24px;background:var(--green);color:#fff;border:0;border-radius:999px;padding:14px 24px;font-weight:800;cursor:pointer}\n.autark-result{display:none;margin-top:28px;padding:24px;border-radius:16px;background:var(--navy);color:#fff}\n.autark-result strong{font-size:1.5rem}\n.autark-note{margin-top:24px;padding:18px;border-left:4px solid var(--green);background:#f7faf8;color:#506071}\n@media(max-width:680px){.autark-calc-grid{grid-template-columns:1fr}}\n<\/style>\n\n<div class=\"wp-block-group calc-intro is-layout-flow wp-block-group-is-layout-flow\"><p class=\"has-text-color has-small-font-size wp-block-paragraph\" style=\"color:#2f7d62;font-weight:800;letter-spacing:0.12em;text-transform:uppercase\">Free planning tool<\/p><h2 class=\"wp-block-heading\">Estimate battery storage capacity<\/h2><p class=\"has-large-font-size wp-block-paragraph\">Calculate a manufacturer-neutral first estimate based on daily consumption, desired autonomy and usable depth of discharge.<\/p><\/div>\n\n<div class=\"autark-calc\">\n  <div class=\"autark-calc-grid\">\n    <div><label for=\"autarkDaily\">Daily consumption (kWh)<\/label><input id=\"autarkDaily\" type=\"number\" min=\"0.1\" step=\"0.1\" value=\"20\"><\/div>\n    <div><label for=\"autarkDays\">Desired autonomy (days)<\/label><input id=\"autarkDays\" type=\"number\" min=\"0.5\" step=\"0.5\" value=\"1.5\"><\/div>\n    <div><label for=\"autarkDod\">Usable depth of discharge<\/label><select id=\"autarkDod\"><option value=\"80\">80 % \u2013 conservative<\/option><option value=\"90\" selected>90 % \u2013 typical lithium<\/option><option value=\"95\">95 % \u2013 high utilisation<\/option><\/select><\/div>\n    <div><label for=\"autarkEff\">System efficiency<\/label><select id=\"autarkEff\"><option value=\"85\">85 % \u2013 conservative<\/option><option value=\"90\" selected>90 % \u2013 typical<\/option><option value=\"93\">93 % \u2013 optimistic<\/option><\/select><\/div>\n    <div><label for=\"autarkPeak\">Simultaneous peak load (kW)<\/label><input id=\"autarkPeak\" type=\"number\" min=\"0.1\" step=\"0.1\" value=\"8\"><\/div>\n  <\/div>\n  <button type=\"button\" onclick=\"autarkCalculateStorage()\">Calculate result<\/button>\n  <div id=\"autarkResult\" class=\"autark-result\" aria-live=\"polite\"><\/div>\n  <div class=\"autark-note\"><strong>Important:<\/strong> This result is an initial guide. Starting currents, winter yield, generator strategy, ageing, reserves and permitted charge\/discharge power must be checked separately during detailed planning.<\/div>\n<\/div>\n<script>\nfunction autarkCalculateStorage(){\n var daily=parseFloat(document.getElementById('autarkDaily').value)||0;\n var days=parseFloat(document.getElementById('autarkDays').value)||0;\n var dod=parseFloat(document.getElementById('autarkDod').value)\/100;\n var eff=parseFloat(document.getElementById('autarkEff').value)\/100;\n var peak=parseFloat(document.getElementById('autarkPeak').value)||0;\n var box=document.getElementById('autarkResult');\n if(daily<=0||days<=0||dod<=0||eff<=0){box.style.display='block';box.innerHTML='Please enter valid values.';return;}\n var usable=daily*days;\n var nominal=usable\/(dod*eff);\n var inverter=peak*1.25;\n box.style.display='block';\n box.innerHTML='<strong>Recommended initial capacity: '+nominal.toFixed(1)+' kWh nominal<\/strong><br><br>Usable energy demand: '+usable.toFixed(1)+' kWh<br>Inverter guideline including 25% reserve: '+inverter.toFixed(1)+' kW';\n}\n<\/script>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\" style=\"margin-top:32px\"><div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"\/en\/kontakt\/\" style=\"border-radius:999px;background-color:#2f7d62\">Have the calculation reviewed<\/a><\/div><\/div>\n<div style=\"height:64px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Free planning tool Estimate battery storage capacity Calculate a manufacturer-neutral first estimate based on daily consumption, desired autonomy and usable 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