{"id":106055,"date":"2026-10-15T15:35:36","date_gmt":"2026-10-15T13:35:36","guid":{"rendered":"https:\/\/firstcolo.net\/glossar\/cue-carbon-usage-effectiveness\/"},"modified":"2026-10-23T08:52:12","modified_gmt":"2026-10-23T06:52:12","slug":"cue-carbon-usage-effectiveness","status":"publish","type":"glossary","link":"https:\/\/firstcolo.net\/en\/glossary\/cue-carbon-usage-effectiveness\/","title":{"rendered":"CUE (Carbon Usage Effectiveness)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"106055\" class=\"elementor elementor-106055 elementor-106031\" data-elementor-post-type=\"glossary\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b13e312 e-flex e-con-boxed e-con e-parent\" data-id=\"b13e312\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-12efb35 e-con-full e-flex e-con e-child\" data-id=\"12efb35\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-0c8addc e-con-full e-flex e-con e-child\" data-id=\"0c8addc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-4b4b447 e-con-full e-flex e-con e-child\" data-id=\"4b4b447\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e946aed elementor-widget elementor-widget-heading\" data-id=\"e946aed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What is Carbon Usage Effectiveness (CUE)?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-654a141 elementor-widget elementor-widget-text-editor\" data-id=\"654a141\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>Carbon Usage Effectiveness (CUE)<\/strong> is a metric that indicates the amount of CO2 emissions a data center generates in relation to the energy consumption of its IT systems. <span data-teams=\"true\">It quantifies the CO\u2082 emissions resulting from the data center&#8217;s energy consumption relative to its IT energy consumption<\/span>.<\/p><p>Alongside the <strong>PUE (Power Usage Effectiveness)<\/strong> and <strong>WUE (Water Usage Effectiveness)<\/strong> values, it is one of the three key metrics for assessing the efficiency and sustainability of <strong>data centers<\/strong>. It was developed by The Green Grid and is now internationally standardized in <strong>ISO\/IEC 30134-8<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8f5f78d e-flex e-con-boxed e-con e-parent\" data-id=\"8f5f78d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-54656e1 elementor-widget elementor-widget-heading\" data-id=\"54656e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How is CUE calculated?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c34f891 elementor-widget elementor-widget-text-editor\" data-id=\"c34f891\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>To calculate it, the CO2 emissions resulting from the data center\u2019s total energy consumption are set in relation to the energy consumption of the IT systems:<\/p><p><strong>CUE = data center CO2 emissions (kg CO2e) \/ IT energy consumption (kWh)<\/strong><\/p><p>The value is stated in <strong>kilograms of CO2 equivalent per kilowatt-hour (kg CO2e\/kWh)<\/strong>. The emissions include the data center\u2019s entire energy consumption, i.e., in addition to IT, also cooling, power supply, lighting and, where applicable, backup generators.<\/p><p>If the data center is supplied exclusively with electricity, the metric can also be calculated in simplified form: multiply the <strong>electricity emissions factor<\/strong> by the PUE value.<\/p><p>Example: A data center with a PUE of 1.3 sources electricity with an emissions factor of 0.4 kg CO2e\/kWh. This results in a value of 0.52 kg CO2e\/kWh. For every kilowatt-hour consumed by the IT, 0.52 kilograms of CO2 equivalent are produced.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b017d8 elementor-widget elementor-widget-heading\" data-id=\"6b017d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How CUE, PUE and WUE work together<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-127de6b elementor-widget elementor-widget-text-editor\" data-id=\"127de6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Each of the three metrics highlights a different aspect of data center operations:<\/p>\n<ul>\n<li>The <a href=\"https:\/\/firstcolo.net\/en\/glossary\/power-usage-effectiveness-pue\/\"><strong>PUE value<\/strong><\/a> shows how efficiently energy is used in the data center.<\/li>\n<li>The <a href=\"https:\/\/firstcolo.net\/en\/glossary\/wue-water-usage-effectiveness\/\"><strong>WUE<\/strong><\/a> shows how much water is consumed in relation to the IT\u2019s energy consumption.<\/li>\n<li>The <strong>CUE<\/strong> makes it clear how many CO2 emissions are associated with energy consumption.<\/li>\n<\/ul>\n<p>There are relationships between the metrics, but they can also influence each other. A low PUE value automatically improves the carbon footprint as well, because less energy is required for cooling and infrastructure. Conversely, a data center with a good PUE value can still cause high emissions if it sources electricity from fossil fuels. Measures such as <a href=\"https:\/\/firstcolo.net\/en\/glossary\/adiabatic-cooling\/\">adiabatic cooling<\/a> can reduce energy demand and emissions, but at the same time worsen the WUE.<\/p>\n<p>For a holistic assessment of a data center, <strong>all three metrics should therefore be considered together<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ed2305d elementor-widget elementor-widget-heading\" data-id=\"ed2305d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is a good CUE value?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78bc393 elementor-widget elementor-widget-text-editor\" data-id=\"78bc393\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The ideal value is 0. This means that no CO2 emissions are generated during data center operation. There is no fixed upper limit.<\/p><p>How high the value is depends primarily on the <strong>source of the electricity<\/strong>. A data center that sources electricity from renewable energy achieves significantly lower values than one operated with electricity from coal or gas. The energy efficiency of the infrastructure, i.e., the PUE value, acts as a multiplier.<\/p><p>A direct comparison of CUE values from different data centers is only meaningful if they were calculated using the same method.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9bb78e1 elementor-widget elementor-widget-heading\" data-id=\"9bb78e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Location-based or market-based: how the CUE value is determined<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e84c1f elementor-widget elementor-widget-text-editor\" data-id=\"8e84c1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>There are two common approaches for calculating CO2 emissions:<\/p><p><strong>Location-based calculation:<\/strong><br\/>This uses the average emissions factor of the regional or national electricity mix. <span data-teams=\"true\">The value reflects the emissions computationally attributed to electricity consumption, based on the average regional or national electricity mix<\/span>.<\/p><p><strong>Market-based calculation:<\/strong><br\/>This incorporates the emissions factor of the electricity actually purchased. If a data center sources certified green electricity, for example via guarantees of origin or direct power purchase agreements, the CUE can be significantly reduced.<\/p><p>Both approaches are valid. However, for a transparent assessment, it should always be specified which method a CUE value is based on.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e566035 elementor-widget elementor-widget-heading\" data-id=\"e566035\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Limitations of CUE<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cbb420 elementor-widget elementor-widget-text-editor\" data-id=\"4cbb420\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>CUE is a helpful metric, but it does not reflect a data center\u2019s entire carbon footprint. It captures only the emissions from <strong>ongoing operations<\/strong>.<\/p>\n<p>It does not take into account, among other things:<\/p>\n<ul>\n<li>emissions from constructing the data center,<\/li>\n<li>emissions from manufacturing servers, cooling and power supply technology,<\/li>\n<li>the efficiency of the IT itself, i.e., how much computing power is delivered per kilowatt-hour, and<\/li>\n<li>the use of waste heat.<\/li>\n<\/ul>\n<p>For a comprehensive sustainability assessment, CUE should therefore be supplemented by additional metrics and analyses.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd5b23f elementor-widget elementor-widget-heading\" data-id=\"fd5b23f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How can CUE be reduced?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a58a36b elementor-widget elementor-widget-text-editor\" data-id=\"a58a36b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Data center operators have two key levers for improving CUE: the source of the electricity and the efficiency of the infrastructure.<\/p>\n<p>These include, among other things:<\/p>\n<ul>\n<li>sourcing electricity from renewable energy,<\/li>\n<li>generating renewable energy in-house, for example via photovoltaics,<\/li>\n<li>efficient cooling, for example through free cooling or liquid cooling,<\/li>\n<li>high utilization of the infrastructure, and<\/li>\n<li>low-emission backup power solutions.<\/li>\n<\/ul>\n<p>In Germany, sourcing electricity from renewable energy is now also required by law for data centers: Under the <strong>Energy Efficiency Act (EnEfG)<\/strong>, operators must cover 50% of their electricity consumption from renewable energy on a balance-sheet basis since January 2024, and 100% from January 2027.<\/p>\n<p>You can find out how firstcolo approaches sustainability in data center operations on our <a href=\"https:\/\/firstcolo.net\/en\/about-us\/sustainability\/\"><strong>Sustainability<\/strong><\/a> page.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1c21a5 elementor-widget elementor-widget-heading\" data-id=\"a1c21a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently asked questions about CUE<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-90d206c e-con-full e-flex e-con e-child\" data-id=\"90d206c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f967fdc elementor-widget elementor-widget-n-accordion\" data-id=\"f967fdc\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2610\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2610\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> What does CUE mean in simple terms? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"40\" zoomAndPan=\"magnify\" viewBox=\"0 0 30 30.000001\" height=\"40\" preserveAspectRatio=\"xMidYMid meet\"><defs><clipPath id=\"1885aee520\"><path d=\"M 0.484375 0 L 29.515625 0 L 29.515625 29.03125 L 0.484375 29.03125 Z M 0.484375 0 \" clip-rule=\"nonzero\"><\/path><\/clipPath><clipPath id=\"64ed1f4570\"><path d=\"M 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2.976562 6.933594 2.445312 C 7.726562 1.917969 8.5625 1.46875 9.445312 1.105469 C 10.324219 0.738281 11.234375 0.464844 12.167969 0.277344 C 13.101562 0.09375 14.046875 0 15 0 Z M 15 0 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><path fill=\"#ffffff\" d=\"M 14.265625 20.859375 C 14.671875 21.273438 15.328125 21.273438 15.730469 20.859375 L 24.371094 12.078125 C 24.777344 11.667969 24.777344 11 24.371094 10.589844 C 23.964844 10.183594 23.308594 10.179688 22.90625 10.589844 L 15 18.625 L 7.089844 10.589844 C 6.683594 10.179688 6.027344 10.179688 5.625 10.589844 C 5.222656 11.003906 5.21875 11.671875 5.625 12.078125 L 14.269531 20.859375 Z M 14.265625 20.859375 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2610\" class=\"elementor-element elementor-element-4a4c1fb e-con-full e-flex e-con e-child\" data-id=\"4a4c1fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2610\" class=\"elementor-element elementor-element-f2f5662 e-flex e-con-boxed e-con e-child\" data-id=\"f2f5662\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2e8866 elementor-widget elementor-widget-text-editor\" data-id=\"d2e8866\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>CUE indicates how much CO2 a data center causes per kilowatt-hour consumed by its IT systems. The lower the value, the more climate-friendly the operation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2611\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2611\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> What is the difference between CUE and PUE? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"40\" zoomAndPan=\"magnify\" viewBox=\"0 0 30 30.000001\" height=\"40\" preserveAspectRatio=\"xMidYMid meet\"><defs><clipPath id=\"1885aee520\"><path d=\"M 0.484375 0 L 29.515625 0 L 29.515625 29.03125 L 0.484375 29.03125 Z M 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28.046875 20.953125 27.597656 21.789062 27.070312 22.582031 C 26.539062 23.375 25.9375 24.105469 25.265625 24.78125 C 24.589844 25.453125 23.855469 26.054688 23.066406 26.585938 C 22.273438 27.117188 21.4375 27.5625 20.554688 27.925781 C 19.675781 28.292969 18.765625 28.566406 17.832031 28.753906 C 16.898438 28.9375 15.953125 29.03125 15 29.03125 Z M 15 29.03125 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><path fill=\"#ffffff\" d=\"M 15.734375 8.171875 C 15.328125 7.757812 14.671875 7.757812 14.269531 8.171875 L 5.628906 16.953125 C 5.222656 17.363281 5.222656 18.03125 5.628906 18.441406 C 6.035156 18.847656 6.691406 18.851562 7.09375 18.441406 L 15 10.40625 L 22.910156 18.441406 C 23.316406 18.851562 23.972656 18.851562 24.375 18.441406 C 24.777344 18.027344 24.78125 17.359375 24.375 16.953125 L 15.730469 8.171875 Z M 15.734375 8.171875 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><\/g><\/g><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg 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6.453125 C 3.460938 5.660156 4.0625 4.925781 4.734375 4.25 C 5.410156 3.578125 6.144531 2.976562 6.933594 2.445312 C 7.726562 1.917969 8.5625 1.46875 9.445312 1.105469 C 10.324219 0.738281 11.234375 0.464844 12.167969 0.277344 C 13.101562 0.09375 14.046875 0 15 0 Z M 15 0 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><path fill=\"#ffffff\" d=\"M 14.265625 20.859375 C 14.671875 21.273438 15.328125 21.273438 15.730469 20.859375 L 24.371094 12.078125 C 24.777344 11.667969 24.777344 11 24.371094 10.589844 C 23.964844 10.183594 23.308594 10.179688 22.90625 10.589844 L 15 18.625 L 7.089844 10.589844 C 6.683594 10.179688 6.027344 10.179688 5.625 10.589844 C 5.222656 11.003906 5.21875 11.671875 5.625 12.078125 L 14.269531 20.859375 Z M 14.265625 20.859375 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2611\" class=\"elementor-element elementor-element-efa93bf e-con-full e-flex e-con e-child\" data-id=\"efa93bf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2611\" class=\"elementor-element elementor-element-c7d8f5c e-flex e-con-boxed e-con e-child\" data-id=\"c7d8f5c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-daf5424 elementor-widget elementor-widget-text-editor\" data-id=\"daf5424\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The PUE value measures how efficiently a data center uses energy. CUE measures how many CO2 emissions are associated with this energy consumption. A data center can therefore be energy-efficient and still have a high CUE if the electricity comes from fossil sources.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does CUE mean in simple terms?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"CUE indicates how much CO2 a data center causes per kilowatt-hour consumed by its IT systems. The lower the value, the more climate-friendly the operation.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between CUE and PUE?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The PUE value measures how efficiently a data center uses energy. CUE measures how many CO2 emissions are associated with this energy consumption. A data center can therefore be energy-efficient and still have a high CUE if the electricity comes from fossil sources.\"}}]}<\/script>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d84cb2f elementor-widget elementor-widget-n-accordion\" data-id=\"d84cb2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. 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24.105469 25.265625 24.78125 C 24.589844 25.453125 23.855469 26.054688 23.066406 26.585938 C 22.273438 27.117188 21.4375 27.5625 20.554688 27.925781 C 19.675781 28.292969 18.765625 28.566406 17.832031 28.753906 C 16.898438 28.9375 15.953125 29.03125 15 29.03125 C 14.046875 29.03125 13.101562 28.9375 12.167969 28.753906 C 11.234375 28.566406 10.324219 28.292969 9.445312 27.925781 C 8.5625 27.5625 7.726562 27.117188 6.933594 26.585938 C 6.144531 26.054688 5.410156 25.453125 4.734375 24.78125 C 4.0625 24.105469 3.460938 23.375 2.929688 22.582031 C 2.402344 21.789062 1.953125 20.953125 1.589844 20.070312 C 1.222656 19.191406 0.949219 18.28125 0.761719 17.347656 C 0.578125 16.414062 0.484375 15.46875 0.484375 14.515625 C 0.484375 13.5625 0.578125 12.617188 0.761719 11.683594 C 0.949219 10.75 1.222656 9.839844 1.589844 8.960938 C 1.953125 8.082031 2.402344 7.242188 2.929688 6.453125 C 3.460938 5.660156 4.0625 4.925781 4.734375 4.25 C 5.410156 3.578125 6.144531 2.976562 6.933594 2.445312 C 7.726562 1.917969 8.5625 1.46875 9.445312 1.105469 C 10.324219 0.738281 11.234375 0.464844 12.167969 0.277344 C 13.101562 0.09375 14.046875 0 15 0 Z M 15 0 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><path fill=\"#ffffff\" d=\"M 14.265625 20.859375 C 14.671875 21.273438 15.328125 21.273438 15.730469 20.859375 L 24.371094 12.078125 C 24.777344 11.667969 24.777344 11 24.371094 10.589844 C 23.964844 10.183594 23.308594 10.179688 22.90625 10.589844 L 15 18.625 L 7.089844 10.589844 C 6.683594 10.179688 6.027344 10.179688 5.625 10.589844 C 5.222656 11.003906 5.21875 11.671875 5.625 12.078125 L 14.269531 20.859375 Z M 14.265625 20.859375 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2260\" class=\"elementor-element elementor-element-1d7cd04 e-con-full e-flex e-con e-child\" data-id=\"1d7cd04\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2260\" class=\"elementor-element elementor-element-c8ec7d9 e-flex e-con-boxed e-con e-child\" data-id=\"c8ec7d9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f2d8f51 elementor-widget elementor-widget-text-editor\" data-id=\"f2d8f51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>CUE is stated in kilograms of CO2 equivalent per kilowatt-hour of IT energy (kg CO2e\/kWh).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2261\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-2261\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> Can CUE reach a value of 0? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"40\" zoomAndPan=\"magnify\" viewBox=\"0 0 30 30.000001\" height=\"40\" preserveAspectRatio=\"xMidYMid meet\"><defs><clipPath id=\"1885aee520\"><path d=\"M 0.484375 0 L 29.515625 0 L 29.515625 29.03125 L 0.484375 29.03125 Z M 0.484375 0 \" clip-rule=\"nonzero\"><\/path><\/clipPath><clipPath id=\"64ed1f4570\"><path d=\"M 0.484375 0 L 29.515625 0 L 29.515625 29.03125 L 0.484375 29.03125 Z M 0.484375 0 \" clip-rule=\"nonzero\"><\/path><\/clipPath><clipPath id=\"315cf8fe66\"><rect x=\"0\" width=\"30\" y=\"0\" height=\"30\"><\/rect><\/clipPath><\/defs><g clip-path=\"url(#1885aee520)\"><g transform=\"matrix(1, 0, 0, 1, 0, 0.000000000000005692)\"><g clip-path=\"url(#315cf8fe66)\"><g clip-path=\"url(#64ed1f4570)\"><path fill=\"#cd7925\" d=\"M 15 29.03125 C 14.046875 29.03125 13.101562 28.9375 12.167969 28.753906 C 11.234375 28.566406 10.324219 28.292969 9.445312 27.925781 C 8.5625 27.5625 7.726562 27.117188 6.933594 26.585938 C 6.144531 26.054688 5.410156 25.453125 4.734375 24.78125 C 4.0625 24.105469 3.460938 23.375 2.929688 22.582031 C 2.402344 21.789062 1.953125 20.953125 1.589844 20.070312 C 1.222656 19.191406 0.949219 18.28125 0.761719 17.347656 C 0.578125 16.414062 0.484375 15.46875 0.484375 14.515625 C 0.484375 13.5625 0.578125 12.617188 0.761719 11.683594 C 0.949219 10.75 1.222656 9.839844 1.589844 8.960938 C 1.953125 8.082031 2.402344 7.242188 2.929688 6.453125 C 3.460938 5.660156 4.0625 4.925781 4.734375 4.25 C 5.410156 3.578125 6.144531 2.976562 6.933594 2.445312 C 7.726562 1.917969 8.5625 1.46875 9.445312 1.105469 C 10.324219 0.738281 11.234375 0.464844 12.167969 0.277344 C 13.101562 0.09375 14.046875 0 15 0 C 15.953125 0 16.898438 0.09375 17.832031 0.277344 C 18.765625 0.464844 19.675781 0.738281 20.554688 1.105469 C 21.4375 1.46875 22.273438 1.917969 23.066406 2.445312 C 23.855469 2.976562 24.589844 3.578125 25.265625 4.25 C 25.9375 4.925781 26.539062 5.660156 27.070312 6.453125 C 27.597656 7.242188 28.046875 8.082031 28.410156 8.960938 C 28.777344 9.839844 29.050781 10.75 29.238281 11.683594 C 29.421875 12.617188 29.515625 13.5625 29.515625 14.515625 C 29.515625 15.46875 29.421875 16.414062 29.238281 17.347656 C 29.050781 18.28125 28.777344 19.191406 28.410156 20.070312 C 28.046875 20.953125 27.597656 21.789062 27.070312 22.582031 C 26.539062 23.375 25.9375 24.105469 25.265625 24.78125 C 24.589844 25.453125 23.855469 26.054688 23.066406 26.585938 C 22.273438 27.117188 21.4375 27.5625 20.554688 27.925781 C 19.675781 28.292969 18.765625 28.566406 17.832031 28.753906 C 16.898438 28.9375 15.953125 29.03125 15 29.03125 Z M 15 29.03125 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><path fill=\"#ffffff\" d=\"M 15.734375 8.171875 C 15.328125 7.757812 14.671875 7.757812 14.269531 8.171875 L 5.628906 16.953125 C 5.222656 17.363281 5.222656 18.03125 5.628906 18.441406 C 6.035156 18.847656 6.691406 18.851562 7.09375 18.441406 L 15 10.40625 L 22.910156 18.441406 C 23.316406 18.851562 23.972656 18.851562 24.375 18.441406 C 24.777344 18.027344 24.78125 17.359375 24.375 16.953125 L 15.730469 8.171875 Z M 15.734375 8.171875 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><\/g><\/g><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" width=\"40\" zoomAndPan=\"magnify\" viewBox=\"0 0 30 30.000001\" height=\"40\" preserveAspectRatio=\"xMidYMid meet\"><defs><clipPath id=\"2e2ca1de46\"><path d=\"M 0.484375 0 L 29.515625 0 L 29.515625 29.03125 L 0.484375 29.03125 Z M 0.484375 0 \" clip-rule=\"nonzero\"><\/path><\/clipPath><\/defs><g clip-path=\"url(#2e2ca1de46)\"><path fill=\"#cd7925\" d=\"M 15 0 C 15.953125 0 16.898438 0.09375 17.832031 0.277344 C 18.765625 0.464844 19.675781 0.738281 20.554688 1.105469 C 21.4375 1.46875 22.273438 1.917969 23.066406 2.445312 C 23.855469 2.976562 24.589844 3.578125 25.265625 4.25 C 25.9375 4.925781 26.539062 5.660156 27.070312 6.453125 C 27.597656 7.242188 28.046875 8.082031 28.410156 8.960938 C 28.777344 9.839844 29.050781 10.75 29.238281 11.683594 C 29.421875 12.617188 29.515625 13.5625 29.515625 14.515625 C 29.515625 15.46875 29.421875 16.414062 29.238281 17.347656 C 29.050781 18.28125 28.777344 19.191406 28.410156 20.070312 C 28.046875 20.953125 27.597656 21.789062 27.070312 22.582031 C 26.539062 23.375 25.9375 24.105469 25.265625 24.78125 C 24.589844 25.453125 23.855469 26.054688 23.066406 26.585938 C 22.273438 27.117188 21.4375 27.5625 20.554688 27.925781 C 19.675781 28.292969 18.765625 28.566406 17.832031 28.753906 C 16.898438 28.9375 15.953125 29.03125 15 29.03125 C 14.046875 29.03125 13.101562 28.9375 12.167969 28.753906 C 11.234375 28.566406 10.324219 28.292969 9.445312 27.925781 C 8.5625 27.5625 7.726562 27.117188 6.933594 26.585938 C 6.144531 26.054688 5.410156 25.453125 4.734375 24.78125 C 4.0625 24.105469 3.460938 23.375 2.929688 22.582031 C 2.402344 21.789062 1.953125 20.953125 1.589844 20.070312 C 1.222656 19.191406 0.949219 18.28125 0.761719 17.347656 C 0.578125 16.414062 0.484375 15.46875 0.484375 14.515625 C 0.484375 13.5625 0.578125 12.617188 0.761719 11.683594 C 0.949219 10.75 1.222656 9.839844 1.589844 8.960938 C 1.953125 8.082031 2.402344 7.242188 2.929688 6.453125 C 3.460938 5.660156 4.0625 4.925781 4.734375 4.25 C 5.410156 3.578125 6.144531 2.976562 6.933594 2.445312 C 7.726562 1.917969 8.5625 1.46875 9.445312 1.105469 C 10.324219 0.738281 11.234375 0.464844 12.167969 0.277344 C 13.101562 0.09375 14.046875 0 15 0 Z M 15 0 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/g><path fill=\"#ffffff\" d=\"M 14.265625 20.859375 C 14.671875 21.273438 15.328125 21.273438 15.730469 20.859375 L 24.371094 12.078125 C 24.777344 11.667969 24.777344 11 24.371094 10.589844 C 23.964844 10.183594 23.308594 10.179688 22.90625 10.589844 L 15 18.625 L 7.089844 10.589844 C 6.683594 10.179688 6.027344 10.179688 5.625 10.589844 C 5.222656 11.003906 5.21875 11.671875 5.625 12.078125 L 14.269531 20.859375 Z M 14.265625 20.859375 \" fill-opacity=\"1\" fill-rule=\"nonzero\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2261\" class=\"elementor-element elementor-element-84c31fb e-con-full e-flex e-con e-child\" data-id=\"84c31fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2261\" class=\"elementor-element elementor-element-0a08d06 e-flex e-con-boxed e-con e-child\" data-id=\"0a08d06\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a34d192 elementor-widget elementor-widget-text-editor\" data-id=\"a34d192\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In calculation terms, yes\u2014if the data center\u2019s entire energy consumption is covered without emissions. In practice, this depends on whether CUE is calculated on a location-based or market-based basis and whether, for example, backup generators are operated with fossil fuels.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-68f45ab e-con-full e-flex e-con e-child\" data-id=\"68f45ab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-54e8178 elementor-widget elementor-widget-button\" data-id=\"54e8178\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Homepage<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f25784 elementor-widget elementor-widget-button\" data-id=\"4f25784\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/firstcolo.net\/en\/knowledge\/glossary\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Glossary<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What is Carbon Usage Effectiveness (CUE)? The Carbon Usage Effectiveness (CUE) is a metric that indicates the amount of CO2 emissions a data center generates in relation to the energy consumption of its IT systems. It quantifies the CO\u2082 emissions resulting from the data center&#8217;s energy consumption relative to its IT energy consumption. Alongside the [&hellip;]<\/p>\n","protected":false},"author":43,"featured_media":97249,"menu_order":0,"template":"","meta":{"content-type":"","footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-106055","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.5 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>CUE (Carbon Usage Effectiveness) in the data center | firstcolo<\/title>\n<meta name=\"description\" content=\"What is Carbon Usage Effectiveness (CUE)? 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