{"id":10368,"date":"2025-01-09T20:28:26","date_gmt":"2025-01-09T20:28:26","guid":{"rendered":"https:\/\/www.solar.com\/learn\/?p=10368"},"modified":"2025-12-04T20:32:15","modified_gmt":"2025-12-04T20:32:15","slug":"what-is-the-carbon-footprint-of-solar-panels","status":"publish","type":"post","link":"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/","title":{"rendered":"What is the Carbon Footprint of Solar Panels?"},"content":{"rendered":"<p>With solar becoming a dominant player in a clean energy future, it\u2019s fair to wonder what the carbon footprint of solar panels is. Is solar energy <em>that <\/em>much cleaner than fossil fuels like natural gas and coal? How much carbon dioxide does solar power really save?<\/p>\n<p>In this article, we\u2019ll explore the life-cycle carbon emissions of photovoltaic solar panels and how they compare to other sources of electricity. Then, we&#8217;ll look at the opportunities to decrease the carbon footprint of solar panels even more.<\/p>\n<p><a id=\"video\"><\/a>Let\u2019s dive in with the big question: What is the carbon footprint of solar panels?<\/p>\n<gs-injectable background = 'true' border='true' primary_color = '#8b72d3' secondary_color='#f98d7e' utm_campaign = 'get_started_injectable' utm_medium='carbon_footprint_of_solar' content_texts = 'true' upper_text='Compare quotes from multiple' upper_text_span = 'trusted installers' lower_text='Lower your bills and' lower_text_span = 'your carbon footprint with solar' get_started_text='Get started' only_community_solar='false'><\/gs-injectable>\n<p>&nbsp;<\/p>\n<p><iframe loading=\"lazy\" title=\"How Much Does Rooftop Solar Reduce Your Carbon Footprint?\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/j2WnaIN9yg0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.solar.com\/dashboard\" target=\"_blank\" rel=\"noopener\">Design a custom solar system to power your home with clean energy!<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2>What is the carbon footprint of solar panels?<\/h2>\n<p><strong>Residential solar panels emit around 41 grams of CO2 equivalent emissions per kilowatt-hour of electricity generated.<\/strong> Most of these lifecycle emissions are tied to the process of manufacturing panels and are offset by clean energy production within the first three years of operation. The lifetime emissions of rooftop solar are 12 times less than electricity generated by gas plants and 20 times less than electricity generated by coal.<\/p>\n<p>That\u2019s quite a mouthful \u2013 so let&#8217;s break it down a bit further.<\/p>\n<p>First off, <strong>life-cycle emissions<\/strong> refer to the total emissions&#8211;from mining to manufacturing to installation to maintenance to disposal&#8211;associated with creating energy. This measurement is standardized into <strong>grams of CO2 equivalents <\/strong>to account for the various types of emissions and their warming impacts.<\/p>\n<p>According to the International Panel on Climate Change (IPCC), the total emissions associated with generating 1 kWh of electricity from rooftop solar adds up to 41 grams of CO2 equivalents \u2013 roughly the mass of a medium chicken egg.<\/p>\n<p>So, solar is not entirely carbon-free, but the environmental impact of solar energy is <em>much\u00a0<\/em>lower than electricity generated by fossil fuels.<\/p>\n<h3>CO2 Emissions per kWh by energy source<\/h3>\n<p>According to the IPCC, the carbon footprint of rooftop solar panels is roughly 12 times less than natural gas and 20 times less than coal, in terms of CO2 emissions per kWh of electricity generated. However, rooftop solar has a larger carbon footprint than hydro, nuclear, and onshore wind turbines.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-medium\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/2023\/01\/Carbon-footprint-of-solar-panels.png\" alt=\"carbon footprint of solar panels\" width=\"1024\" height=\"636\" \/><\/p>\n<p>Let&#8217;s put these emissions into perspective.<\/p>\n<h3>How much carbon dioxide do solar panels save?<\/h3>\n<p>Carbon emissions can be tough to visualize, so let&#8217;s picture them as medium-sized chicken eggs.<\/p>\n<p>As another reference, one kWh is roughly what it takes to power a fridge for one day. So, the chart below shows you how many eggs&#8217; worth of carbon emissions it requires to power your fridge for a day.<\/p>\n<h4>CO2 Emissions Per kWh of solar versus fossil fuels<\/h4>\n<table width=\"624\">\n<tbody>\n<tr>\n<td width=\"208\"><strong>Energy source<\/strong><\/td>\n<td width=\"208\"><strong>Life-cycle CO2e emissions per kWh produced<\/strong><\/td>\n<td width=\"208\"><strong>Equivalent mass per kWh<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\" width=\"208\">Solar (Rooftop)<\/td>\n<td width=\"208\">41 grams<\/td>\n<td width=\"208\">~1 egg<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\" width=\"208\">Natural gas<\/td>\n<td width=\"208\">490 grams<\/td>\n<td width=\"208\">~12 eggs<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\" width=\"208\">Coal<\/td>\n<td width=\"208\">820 grams<\/td>\n<td width=\"208\">~20 eggs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>Source: <\/em><a href=\"https:\/\/www.ipcc.ch\/site\/assets\/uploads\/2018\/02\/ipcc_wg3_ar5_annex-iii.pdf\" target=\"_blank\" rel=\"noopener\"><em>IPCC<\/em><\/a><\/p>\n<p>Now, let\u2019s say you use 15 kWh of electricity per day. And for every kWh of electricity you use, an egg appears in your refrigerator. After four days, you\u2019d have:<\/p>\n<ul>\n<li>5 dozen eggs if you\u2019re running on rooftop solar<\/li>\n<li>60 dozen eggs if you\u2019re running on natural gas<\/li>\n<li>100 dozen eggs if you\u2019re running on coal<\/li>\n<\/ul>\n<p>Can you imagine trying to deal with 1,200 eggs every four days?<\/p>\n<p>Of course, carbon emissions aren\u2019t eggs, and they have detrimental effects on human health and climate change. And, unlike fossil fuel energy, which is always going to produce carbon emissions, there are many opportunities to lower the footprint of solar panels even further.<\/p>\n<p>&nbsp;<\/p>\n<gs-injectable background = 'true' border='true' primary_color = '#8b72d3' secondary_color='#f98d7e' utm_campaign = 'get_started_injectable' utm_medium='carbon_footprint_of_solar' content_texts = 'true' upper_text='Compare quotes from multiple' upper_text_span = 'trusted installers' lower_text='See how much solar could lower your' lower_text_span = 'energy costs &amp; carbon emissions' get_started_text='Get started' only_community_solar='false'><\/gs-injectable>\n<p>&nbsp;<\/p>\n<h2>How to lower the carbon footprint of solar panels<\/h2>\n<p>The IPCC puts the carbon footprint of rooftop solar at 41 grams of CO2 equivalents per kWh of electricity produced. But that number is not etched in stone.<\/p>\n<p>In fact, there are many ways to reduce the carbon footprint of solar panels (and it\u2019s likely already come down since the IPCC reported the 41 grams figure back in 2014).<\/p>\n<p>According to the <a href=\"https:\/\/www.nrel.gov\/docs\/fy13osti\/56487.pdf\" target=\"_blank\" rel=\"noopener\">National Renewable Energy Lab<\/a>, life-cycle emissions can be divided into three buckets:<\/p>\n<ul>\n<li>Upstream processes<\/li>\n<li>Operational processes<\/li>\n<li>Downstream processes<\/li>\n<\/ul>\n<p>There are opportunities at each stage to lower the carbon footprint of solar panels.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-medium\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/2023\/01\/life-cycle-emissions-of-solar-vs-coal.png\" alt=\"carbon footprint of solar panels vs coal life cycle emissions\" width=\"827\" height=\"495\" \/><\/p>\n<p><a href=\"https:\/\/www.nrel.gov\/docs\/fy13osti\/56487.pdf\">Image source.<\/a><\/p>\n<h3>Reduce upstream carbon emissions<\/h3>\n<p>The carbon footprint of manufacturing solar panels accounts for roughly two-thirds of the life-cycle emissions of solar energy.<\/p>\n<p>This includes processes like extracting raw materials, manufacturing equipment, and constructing the manufacturing plants themselves. These processes have historically been powered by fossil fuels. However, as we transition to renewable energy, we can reduce these emissions and the carbon footprint of manufacturing solar panels.<\/p>\n<p>In other words, we can use clean energy to create\u00a0<em>cleaner\u00a0<\/em>energy.<\/p>\n<p>There are also ways of converting existing infrastructure into solar manufacturing, like turning a <a href=\"https:\/\/www.solarpowerworldonline.com\/2022\/10\/a-look-inside-the-solar-industrys-newest-us-factory\/\" target=\"_blank\" rel=\"noopener\">118-year-old steel processing plant into a solar torque tube factory.<\/a><\/p>\n<p>Finally, we can make manufacturing processes more efficient. For example, researchers are exploring ways to <a href=\"https:\/\/techxplore.com\/news\/2022-11-solar-panels-panel.html?utm_campaign=%5BSolar.com%5D%20Newsletter&amp;utm_medium=email&amp;_hsmi=236890592&amp;_hsenc=p2ANqtz-_bSBWwGGljmK5RoiwFoHfEurbp9cTzwJoDYuNc1qsAbA6YqGmqAEuYTlseXUsKE7UB94A3rit2V4WdJ0xVyp1qm6CpVA&amp;utm_content=236890592&amp;utm_source=hs_email\" target=\"_blank\" rel=\"noopener\">upcycle \u201csilicon powder\u201d<\/a> waste created during solar panel manufacturing to reduce the need for extracting raw materials and the associated emissions.<\/p>\n<h3>Operational processes<\/h3>\n<p>Operational emissions refer to the carbon footprint of solar panels once they are installed and operating. These emissions are minimal, especially with rooftop solar systems that require virtually no maintenance and transmission.<\/p>\n<p>Even so, the operational emissions per kWh of solar panels can be lowered by increasing their solar output. And there are a few ways to do this:<\/p>\n<ul>\n<li>Install solar panels in areas with maximum sun exposure<\/li>\n<li>Increase the efficiency of solar panels<\/li>\n<li>Keep panels in operation longer than 25-30 years<\/li>\n<li><a href=\"https:\/\/pv-magazine-usa.com\/2022\/02\/07\/grazing-sheep-increase-carbon-sequestration-up-to-80-while-also-benefiting-fixation-of-soil-nutrients-under-solar-panels\/\" target=\"_blank\" rel=\"noopener\">Combine solar panels with agriculture<\/a> (agrivoltatics) to increase carbon sequestration and food production<\/li>\n<li><a href=\"https:\/\/www.canarymedia.com\/articles\/solar\/floating-solar-panels-could-unlock-clean-power-without-wasting-land\" target=\"_blank\" rel=\"noopener\">Float solar panels on reservoirs<\/a> (floatovoltaics) to reduce water loss, increase panel efficiency, and utilize existing transmission infrastructure<\/li>\n<\/ul>\n<p>The good news is that solar panels are becoming more efficient and lasting longer than expected, thus reducing their carbon footprint. In fact, a 40-year-old rooftop solar panel in Vermont is still <a href=\"https:\/\/www.greenbuildingadvisor.com\/article\/testing-a-forty-year-old-photovoltaic-module\" target=\"_blank\" rel=\"noopener\">operating at around 92% of its original output<\/a>.<\/p>\n<h3>Downstream processes<\/h3>\n<p>The smallest chunk of the carbon footprint of solar panels is due to the downstream emissions of deconstructing and disposing of solar systems.<\/p>\n<p>You guessed it \u2013 there are ways to reduce these emissions, too.<\/p>\n<p>The biggest opportunity is in solar panel recycling, an industry that is <a href=\"https:\/\/www.benzinga.com\/pressreleases\/23\/01\/g30335009\/solar-panel-recycling-market-to-expand-at-a-cagr-of-37-during-forecast-period-2022-tmr-study\" target=\"_blank\" rel=\"noopener\">poised for rapid growth<\/a> in this decade. Over <a href=\"https:\/\/www.saurenergy.com\/solar-energy-blog\/solar-recycling-picking-up-pace\" target=\"_blank\" rel=\"noopener\">90% of the materials<\/a> used to make solar panels can be recycled, including the aluminum frame, glass cover, copper wire, silicon wafer, and plastic junction box.<\/p>\n<p>Recycling these materials would not only decrease downstream emissions, it reduces the need for raw materials, thus decreasing upstream emissions, too.<\/p>\n<h2>Does going solar reduce your carbon footprint?<\/h2>\n<p>Installing solar panels on your home is a very effective path to reduced carbon emissions. Although there are carbon emissions associated with manufacturing solar panels, these are quickly offset once they are installed and operational.<\/p>\n<p>Depending on your local electricity mix, it typically takes 2-3 years for solar panels to offset their life-cycle emissions, leaving decades of clean power generation, water conservation, and energy cost savings.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-medium\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/2023\/01\/carbon-footprint-of-solar-vs-coal.png\" alt=\"carbon footprint of solar panels vs coal\" width=\"1915\" height=\"1545\" \/><\/p>\n<p>Although there is a carbon footprint associated with solar panels,<strong> the life-cycle emissions of solar electricity are around 12 times less than natural gas and 20 times lower than coal. <\/strong>And unlike burning fossil fuels, there is tremendous potential to further reduce the carbon footprint of solar panels. These include powering manufacturing on renewable energy, recycling materials, and increasing the efficiency and longevity of solar panels.<\/p>\n<p>Ready to save money and reduce your carbon footprint? <a href=\"https:\/\/www.solar.com\/dashboard\">Start your solar journey with multiple quotes from vetted installers.<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>With solar becoming a dominant player in a clean energy future, it\u2019s fair to wonder what the carbon footprint of solar panels is. Is solar energy that much cleaner than&#8230;<\/p>\n","protected":false},"author":51,"featured_media":10372,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":""},"categories":[2,67],"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>What is the Carbon Footprint of Solar Panels? | Solar.com<\/title>\n<meta name=\"description\" content=\"The carbon footprint of solar panels is largely due to manufacturing, but is quickly offset once panels are installed and operational.\" \/>\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\/what-is-the-carbon-footprint-of-solar-panels\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the Carbon Footprint of Solar Panels?\" \/>\n<meta property=\"og:description\" content=\"The carbon footprint of solar panels is largely due to manufacturing, but is quickly offset once panels are installed and operational.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/\" \/>\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=\"2025-01-09T20:28:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-04T20:32:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/assets.solar.com\/wp-content\/uploads\/2023\/01\/carbon-footprint-of-solar-panels.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"850\" \/>\n\t<meta property=\"og:image:height\" content=\"420\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sam Wigness\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SamuelWigness\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Wigness\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/\"},\"author\":{\"name\":\"Sam Wigness\",\"@id\":\"https:\/\/www.solar.com\/learn\/#\/schema\/person\/b594f06d4c2b5e6a0e85af02b90fb883\"},\"headline\":\"What is the Carbon Footprint of Solar Panels?\",\"datePublished\":\"2025-01-09T20:28:26+00:00\",\"dateModified\":\"2025-12-04T20:32:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/\"},\"wordCount\":1355,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.solar.com\/learn\/#organization\"},\"articleSection\":[\"The Pros and Cons of Rooftop Solar in 2026\",\"5 Ways That Solar Energy Benefits the Environment\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/\",\"url\":\"https:\/\/www.solar.com\/learn\/what-is-the-carbon-footprint-of-solar-panels\/\",\"name\":\"What is the Carbon Footprint of Solar Panels? 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