{"id":6285,"date":"2018-07-13T17:49:49","date_gmt":"2018-07-13T17:49:49","guid":{"rendered":"https:\/\/www.portal.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/"},"modified":"2019-08-09T01:16:56","modified_gmt":"2019-08-09T01:16:56","slug":"how-solar-panels-absorb-and-store-energy","status":"publish","type":"post","link":"https:\/\/www.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/","title":{"rendered":"How Solar Panels Absorb and Store Energy"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>The sun\u2019s energy is expressed in different ways, depending on what materials it interacts with.<\/p>\n<p>Solar panels are built with materials that physically interact with certain wavelengths of solar energy. This enables them to transform solar energy into electricity. Here\u2019s how solar panels absorb and store energy.<\/p>\n<h2>What\u2019s in a solar panel?<\/h2>\n<p>Traditional solar panels are <a href=\"https:\/\/www.solar.com\/learn\/how-are-solar-panels-manufactured\/\"><u>made with silicon<\/u><\/a> crystals. Silicon is a very special material. It creates an electrical current with sunlight. This is because of the electrons making up a silicon atom.<\/p>\n<p>When sunlight hits your skin, the electrons in the atoms of your body vibrate quickly to generate heat. But electrons do something different in silicon. The electrons start moving around. This means that the <a href=\"https:\/\/www.scientificamerican.com\/article\/how-does-solar-power-work\/\" target=\"_blank\" rel=\"noopener noreferrer\"><u>sun\u2019s energy is conducted into an electrical current<\/u><\/a>, rather than static heat.<\/p>\n<p>Newer, thin film solar panels function in a similar way. Rather than silicon, they\u2019re made with<\/p>\n<ul>\n<li>Cadmium Telluride (CdTe)<\/li>\n<li>Amorphous Silicon (a-Si)<\/li>\n<li>Copper Indium Gallium Selenide (CIGS)<\/li>\n<li>Gallium Arsenide (GaAs)<\/li>\n<\/ul>\n<p>Crystals made from these are smaller and less expensive to produce. Though, they\u2019re not quite as good at producing electricity as silicon. Thin film solar panels are used more for commercial projects, on satellites and spacecraft.<\/p>\n<p><img style=\"width: 660px;\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/Thin-Film-Solar-Cells.jpg\" alt=\"Thin-Film-Solar-Cells\" width=\"660\" \/><\/p>\n<p>With either the silicon or thin film solar cells absorbing the sun\u2019s light, the electrons do their thing. They\u2019re bumped up to a higher level of energy and get active. Once that higher energy level is reached, it\u2019s up to us to capture and direct the electricity where we can use it.<\/p>\n<p>A series of tiny wires creates a network of electrical current-conducting &#8220;mini highways&#8221; within a solar panel. These all tie back to a <a href=\"https:\/\/www.solar.com\/learn\/solar-inverter\/\"><u>power inverter<\/u><\/a>. Inverters change the raw electric current from DC power to AC power. Your home is wired to conduct AC power, so inverters essentially make the electricity usable.<\/p>\n<h2>Do Solar Panels Store Energy?<\/h2>\n<p>In short, no they don\u2019t. This has been one of the biggest challenges for solar developers. While it\u2019s great to generate clean electricity, days with less sun and lower production might mean you have to tap into the power grid anyway. But there are options.<\/p>\n<p>Many states offer <a href=\"https:\/\/www.solar.com\/learn\/what-is-net-energy-metering-for-solar-2018\/\"><u>net metering<\/u><\/a>, which allows you to sell any excess energy you produce on sunny days to the utility company for credit. Then when those rainy days come along (or at night), you can pull power from the grid with those points you racked up.<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/216579562?title=0&amp;byline=0&amp;portrait=0\" width=\"640\" height=\"360\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2>Solar Batteries to Store Extra Energy<\/h2>\n<p>Battery storage is another option for storing solar energy. Companies such as <a href=\"https:\/\/www.solar.com\/learn\/tesla-powerwall\/\"><u>Tesla<\/u><\/a>, <a href=\"https:\/\/www.solar.com\/learn\/home-battery-backup-comparison-lg-sonnen\/\"><u>LG, and sonnenBatterie<\/u><\/a> are producing batteries that make solar plus storage for homeowners more available. Batteries give the option of more independence from the grid. You can pull energy from your battery at night, rather than switching to utility power when the sun stops shining.<\/p>\n<p>Battery backup also comes in handy in cases of power blackouts. You could run your appliances and electronics using a solar battery for a day or two. That\u2019s generally enough time for your utility to get things up and running again. Of course, your solar panels will kick back in when it\u2019s sunny as well, giving your battery a break.<\/p>\n<p>Learn more about using a <a href=\"https:\/\/www.solar.com\/learn\/how-long-can-a-battery-provide-power-during-an-outage\/\"><u>solar battery backup during a power outage here<\/u><\/a>. Explore more about how solar might fit your home by <a href=\"https:\/\/www.solar.com\/\"><u>punching in your address here<\/u><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; The sun\u2019s energy is expressed in different ways, depending on what materials it interacts with. Solar panels are built with materials that physically interact with certain wavelengths of solar&#8230;<\/p>\n","protected":false},"author":42,"featured_media":6476,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":""},"categories":[69],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.5 (Yoast SEO v19.10) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How Solar Panels Absorb and Store Energy | Solar.com<\/title>\n<meta name=\"description\" content=\"Solar panels are built with materials that interact with the light of solar energy. This enables them to transform the solar energy into electricity. Here\u2019s how solar panels absorb and store energy.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Solar Panels Absorb and Store Energy\" \/>\n<meta property=\"og:description\" content=\"Solar panels are built with materials that interact with the light of solar energy. This enables them to transform the solar energy into electricity. Here\u2019s how solar panels absorb and store energy.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/\" \/>\n<meta property=\"og:site_name\" content=\"Solar.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Solar.comOfficial\/\" \/>\n<meta property=\"article:published_time\" content=\"2018-07-13T17:49:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-08-09T01:16:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/s3.amazonaws.com\/solarassets\/wp-content\/uploads\/2019\/06\/Solar_absorption2.png\" \/>\n\t<meta property=\"og:image:width\" content=\"870\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Hannah Glenn\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/HSnacktress\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Hannah Glenn\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/\"},\"author\":{\"name\":\"Hannah Glenn\",\"@id\":\"https:\/\/www.solar.com\/learn\/#\/schema\/person\/c93f47b0d1dadcddac82f0f72141f0a0\"},\"headline\":\"How Solar Panels Absorb and Store Energy\",\"datePublished\":\"2018-07-13T17:49:49+00:00\",\"dateModified\":\"2019-08-09T01:16:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.solar.com\/learn\/how-solar-panels-absorb-and-store-energy\/\"},\"wordCount\":570,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.solar.com\/learn\/#organization\"},\"articleSection\":[\"How Does Solar Power Work on a House? 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