{"id":429,"date":"2026-10-23T19:13:31","date_gmt":"2026-10-24T02:13:31","guid":{"rendered":"https:\/\/starlightenergy.io\/powerwall-3-power-outage\/"},"modified":"2026-10-24T15:16:38","modified_gmt":"2026-10-24T22:16:38","slug":"home-battery-power-outage","status":"publish","type":"page","link":"https:\/\/starlightenergy.io\/es\/home-battery-power-outage\/","title":{"rendered":"Home Batteries in a Power Outage"},"content":{"rendered":"\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin=\"\">\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&amp;family=IBM+Plex+Sans:wght@400;500;600;700&amp;display=swap\" rel=\"stylesheet\">\n<style>\n  :root { --se-navy:#0e2c4d; --se-navy-2:#0a2038; --se-blue:#1c6fb3; --se-blue-lite:#4f97d6; --se-sun-red:#d83a2c; --se-sun-orange:#f07d1a; --se-sun-gold:#f6b62e; --se-paper:#f6f8fb; --se-card:#ffffff; 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Battery Installation<\/a>\n          <a role=\"menuitem\" href=\"\/new-construction-solar\/\">New Construction Solar<\/a>\n          <a role=\"menuitem\" href=\"\/solar-ppa\/\">Solar PPA ($0 Upfront)<\/a>\n          <a role=\"menuitem\" href=\"\/solar-maintenance\/\">Solar Preventative Maintenance<\/a>\n          <a role=\"menuitem\" href=\"\/panel-upgrades\/\">Main Panel Upgrades<\/a>\n          <a role=\"menuitem\" href=\"\/ev-charger-installation\/\">EV Charger Installation<\/a>\n          <a role=\"menuitem\" href=\"\/electrical-troubleshooting\/\">Electrical Troubleshooting &amp; Repair<\/a>\n        <\/div>\n      <\/div>\n      <a class=\"se-navlink\" href=\"\/savings-calculator\/\">Savings Calculator<\/a>\n      <div class=\"se-has-dropdown\" data-se-dropdown=\"\">\n        <button type=\"button\" class=\"se-dd-toggle\" aria-expanded=\"false\" aria-haspopup=\"true\" aria-controls=\"se-areas-menu\">Blog <span class=\"se-caret\" aria-hidden=\"true\"><\/span><\/button>\n        <div class=\"se-dd-menu\" id=\"se-areas-menu\" role=\"menu\">\n          <a role=\"menuitem\" href=\"\/solar-san-jose\/\">Solar in San Jose<\/a>\n          <a role=\"menuitem\" href=\"\/solar-san-francisco\/\">Solar in San Francisco<\/a>\n          <a role=\"menuitem\" href=\"\/pge-and-cca-explained\/\">PG&amp;E and CCAs, explained<\/a>\n          <a role=\"menuitem\" href=\"\/pge-peak-hours-explained\/\">PG&amp;E peak hours, explained<\/a>\n          <a role=\"menuitem\" href=\"\/home-battery-power-outage\/\">Home batteries in a power outage<\/a>\n          <a role=\"menuitem\" href=\"\/solar-panel-upgrade-120-rule\/\">Do I need a panel upgrade for solar?<\/a>\n        <\/div>\n      <\/div>\n      <a class=\"se-navlink\" href=\"\/about\/\">About<\/a>\n      <a class=\"se-nav-phone\" href=\"tel:+14087020480\">(408) 702-0480<\/a>\n      <a class=\"se-btn se-btn-sun\" href=\"\/contact\/\">Free assessment<\/a>\n    <\/nav>\n  <\/div>\n<\/header>\n\n<div class=\"se-crumb\"><div class=\"se-wrap\"><a href=\"\/\">Home<\/a> &nbsp;\/&nbsp; Blog &nbsp;\/&nbsp; Home batteries in a power outage<\/div><\/div>\n\n<section class=\"se-hero se-art-hero\">\n  <div class=\"se-wrap se-narrow\">\n    <p class=\"se-eyebrow\">Blog<\/p>\n    <h1>What a home battery does during a <span class=\"se-underline\">power outage<\/span><\/h1>\n    <p class=\"se-lede\">PG&amp;E outages happen, from storms to Public Safety Power Shutoffs. Here is how a home battery keeps your home running, what it can power and how to make its energy last.<\/p>\n  <\/div>\n<\/section>\n\n<section class=\"se-section se-art\">\n  <div class=\"se-wrap se-narrow se-prose\">\n    <h2>Why outages are a Bay Area issue<\/h2>\n    <p>During high winds and dry weather, PG&amp;E may turn off power to prevent wildfires. This is called a Public Safety Power Shutoff (PSPS). When possible, PG&amp;E sends alerts two days before, one day before and just before the power goes off. The City of San Jos\u00e9 notes that power could stay off for as long as seven days.<\/p>\n    <h2>Solar alone shuts off in an outage<\/h2>\n    <p>A standard solar system without a battery does not work when the grid is down. A home battery lets your home keep using solar during an outage.<\/p>\n    <h2>How a home battery takes over<\/h2>\n    <ul class=\"se-art-list\">\n      <li><strong>Automatic switch.<\/strong> When the grid goes down, a battery set up for backup disconnects from the grid and powers your home on its own.<\/li>\n      <li><strong>Stored energy and power.<\/strong> Storage and power vary by battery. Compare the batteries we install on our <a href=\"\/battery-storage\/#batteries\">battery storage page<\/a>.<\/li>\n      <li><strong>Power for big loads.<\/strong> Several batteries can start heavy loads like central air conditioners. This is rated in locked-rotor amps (LRA).<\/li>\n      <li><strong>Recharges from solar.<\/strong> With solar, the battery can recharge during the day, even while the grid is down.<\/li>\n      <li><strong>Room to grow.<\/strong> Most systems let you add batteries later for more power and storage.<\/li>\n    <\/ul>\n    <h2>Whole home or selected circuits<\/h2>\n    <p>Your system can back up your whole home or only the circuits you choose, like the refrigerator, lights, internet and medical equipment. We design the backup around what matters most to you.<\/p>\n    <h2>Make your backup last<\/h2>\n    <ul class=\"se-art-list\">\n      <li>Use less of the energy-heavy appliances during an outage: air conditioners, EV charging, electric heaters and dishwashers.<\/li>\n      <li>Turn on your battery app&#8217;s storm mode if it has one. Many batteries can charge to full when severe weather, like a red flag warning, is issued for your area.<\/li>\n      <li>Set a higher backup reserve if outages are common where you live.<\/li>\n    <\/ul>\n    <p>Want to know what a home battery would back up in your home? Our free assessment uses your real bills and your home&#8217;s electrical setup. Learn more about <a href=\"\/battery-storage\/\">battery storage<\/a>.<\/p>\n  <\/div>\n<\/section>\n\n<section class=\"se-section\">\n  <div class=\"se-wrap se-narrow\">\n    <div class=\"se-section-head\"><h2>Common questions<\/h2><\/div>\n    <div class=\"se-faq-item\"><h3>How long will a home battery last in an outage?<\/h3><p>It depends on the battery and what you run. A home using less power lasts longer, and solar can recharge the battery during the day.<\/p><\/div>\n    <div class=\"se-faq-item\"><h3>Which battery is best for backup?<\/h3><p>It depends on your home&#8217;s loads, your solar and your budget. Compare the batteries we install on our battery storage page, and we&#8217;ll recommend one during your free assessment.<\/p><\/div>\n    <p class=\"se-art-sources\">Sources: <a href=\"https:\/\/www.tesla.com\/support\/energy\/powerwall\/learn\/how-powerwall-works\" target=\"_blank\" rel=\"noopener\">Tesla, How Powerwall Works<\/a>, <a href=\"https:\/\/enphase.com\/learn\/home-energy\/why-enphase\/about-our-products\" target=\"_blank\" rel=\"noopener\">Enphase, About our products<\/a>, <a href=\"https:\/\/www.tesla.com\/support\/energy\/powerwall\/own\/best-practices-during-power-outages\" target=\"_blank\" rel=\"noopener\">Tesla, outage best practices<\/a>, <a href=\"https:\/\/enphase.com\/learn\/home-energy\/explore-your-system\/know-your-enphase-storage-system\" target=\"_blank\" rel=\"noopener\">Enphase, Know your storage system<\/a>, <a href=\"https:\/\/support.enphase.com\/s\/article\/what-is-storm-guard\" target=\"_blank\" rel=\"noopener\">Enphase Storm Guard<\/a>, <a href=\"https:\/\/www.franklinwh.com\/support\/overview\/storm-hedge\" target=\"_blank\" rel=\"noopener\">FranklinWH Storm Hedge<\/a>, <a href=\"https:\/\/www.tesla.com\/support\/energy\/powerwall\/mobile-app\/storm-watch\" target=\"_blank\" rel=\"noopener\">Tesla Storm Watch<\/a>, <a href=\"https:\/\/www.pge.com\/en\/outages-and-safety\/safety\/community-wildfire-safety-program\/public-safety-power-shutoffs.html\" target=\"_blank\" rel=\"noopener\">PG&amp;E Public Safety Power Shutoffs<\/a>, <a href=\"https:\/\/www.pge.com\/assets\/pge\/docs\/outages-and-safety\/outage-preparedness-and-support\/01-22-2025-psps-event-notifications.pdf\" target=\"_blank\" rel=\"noopener\">PG&amp;E PSPS notifications<\/a>, <a href=\"https:\/\/www.sanjoseca.gov\/your-government\/departments-offices\/office-of-the-city-manager\/emergency-management\/be-prepared\/pg-e-public-safety-power-shutoffs\" target=\"_blank\" rel=\"noopener\">City of San Jos\u00e9<\/a>.<\/p>\n  <\/div>\n<\/section>\n\n<section class=\"se-section se-final\" id=\"quote\">\n  <div class=\"se-wrap\">\n    <h2>See what solar plus storage would save you.<\/h2>\n    <p>A free assessment with a written estimate and honest payback math &mdash; no pressure to sign.<\/p>\n    <div style=\"display:flex;gap:14px;justify-content:center;flex-wrap:wrap;\">\n      <a class=\"se-btn se-btn-sun\" href=\"tel:+14087020480\">Call (408) 702-0480<\/a>\n      <a class=\"se-btn se-btn-ghost\" style=\"color:#fff;border-color:rgba(255,255,255,0.5)\" href=\"\/contact\/\">Request assessment online<\/a>\n    <\/div>\n  <\/div>\n<\/section>\n\n<style>\n.se-art-hero .se-wrap{padding-top:8px;padding-bottom:8px}\n.se-art-hero h1{margin-top:10px;overflow-wrap:break-word}\n@media (max-width:600px){.se-art-hero h1{font-size:34px;line-height:1.12}.se-hero.se-art-hero h1 .se-underline{white-space:normal!important}.se-hero.se-art-hero h1 .se-underline::after{display:none}}\n.se-art .se-prose h2{margin:38px 0 14px}\n.se-art .se-prose h2:first-child{margin-top:0}\n.se-art-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 8px;border:1px solid #e2e8f0;border-radius:12px}\n.se-art-table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.5;min-width:0}\n.se-art-table th{background:#0e2c4d;color:#fff;text-align:left;padding:10px 14px;font-weight:600}\n.se-art-table td{padding:10px 14px;border-top:1px solid #e2e8f0;vertical-align:top}\n.se-art-table td:first-child{font-weight:600;color:#0e2c4d;width:42%}\n.se-art-table tbody tr:nth-child(even) td{background:#f6f8fb}\n.se-art-list{padding-left:1.2em;margin:0 0 18px}\n.se-art-list li{margin-bottom:12px;line-height:1.6}\n.se-art-sources{font-size:13px;color:#566573;margin-top:28px}\n@media (max-width:600px){.se-art-table{font-size:14px}.se-art-table th,.se-art-table td{padding:9px 10px}}\n<\/style>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Article\",\n  \"headline\": \"What a home battery does during a power outage\",\n  \"description\": \"How a home battery keeps your home running during PG&E outages and safety shutoffs, what it can power, and how solar recharges it.\",\n  \"datePublished\": \"2026-10-23\",\n  \"dateModified\": \"2026-10-24\",\n  \"inLanguage\": \"en-US\",\n  \"mainEntityOfPage\": \"https:\/\/starlightenergy.io\/home-battery-power-outage\/\",\n  \"author\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Starlight Energy\",\n    \"url\": \"https:\/\/starlightenergy.io\/\"\n  },\n  \"publisher\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Starlight Energy\",\n    \"logo\": {\n      \"@type\": \"ImageObject\",\n      \"url\": \"https:\/\/starlightenergy.io\/wp-content\/uploads\/2026\/10\/starlight-logo-96.webp\"\n    }\n  }\n}\n<\/script>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How long will a home battery last in an outage?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It depends on the battery and what you run. 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Solar Preventative Maintenance Main Panel Upgrades EV Charger Installation Electrical Troubleshooting &amp; Repair Savings Calculator Blog Solar in San Jose Solar in San Francisco PG&amp;E and CCAs, explained PG&amp;E peak hours, explained Home batteries in a power outage Do [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"no-title","meta":{"footnotes":""},"class_list":["post-429","page","type-page","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"C\u00f3mo una bater\u00eda para el hogar mantiene su casa funcionando durante apagones y cortes de seguridad de PG&amp;E, qu\u00e9 puede alimentar y c\u00f3mo la energ\u00eda solar lo recarga.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" 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