{"id":10199,"date":"2025-09-10T12:49:19","date_gmt":"2025-09-10T12:49:19","guid":{"rendered":"https:\/\/nb.ieb.kit.edu\/?p=10199"},"modified":"2025-09-11T09:32:53","modified_gmt":"2025-09-11T09:32:53","slug":"lookit-interview-we-must-eventually-start-measuring-co2-emissions-instead-of-insulation-thickness-only","status":"publish","type":"post","link":"https:\/\/nb.ieb.kit.edu\/index.php\/lookit-interview-we-must-eventually-start-measuring-co2-emissions-instead-of-insulation-thickness-only\/","title":{"rendered":"LooKIT-Interview: \u201eWe must eventually start measuring CO2\u00a0emissions instead of insulation thickness only\u201c"},"content":{"rendered":"\n<div class=\"wp-block-jetpack-slideshow aligncenter\" data-effect=\"slide\"><div class=\"wp-block-jetpack-slideshow_container swiper-container\"><ul class=\"wp-block-jetpack-slideshow_swiper-wrapper swiper-wrapper\"><li class=\"wp-block-jetpack-slideshow_slide swiper-slide\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"537\" height=\"335\" alt=\"\" class=\"wp-block-jetpack-slideshow_image wp-image-10200\" data-id=\"10200\" src=\"https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-537x335.jpg\" srcset=\"https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-537x335.jpg 537w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-1024x640.jpg 1024w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-212x132.jpg 212w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-768x480.jpg 768w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-1536x959.jpg 1536w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_1-2048x1279.jpg 2048w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><\/figure><\/li><li class=\"wp-block-jetpack-slideshow_slide swiper-slide\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"537\" height=\"335\" alt=\"\" class=\"wp-block-jetpack-slideshow_image wp-image-10201\" data-id=\"10201\" src=\"https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-537x335.jpg\" srcset=\"https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-537x335.jpg 537w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-1024x638.jpg 1024w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-212x132.jpg 212w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-768x479.jpg 768w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-1536x958.jpg 1536w, https:\/\/nb.ieb.kit.edu\/wp-content\/uploads\/2025\/09\/LooKIT_2-2048x1277.jpg 2048w\" sizes=\"(max-width: 537px) 100vw, 537px\" \/><\/figure><\/li><\/ul><a class=\"wp-block-jetpack-slideshow_button-prev swiper-button-prev swiper-button-white\" role=\"button\"><\/a><a class=\"wp-block-jetpack-slideshow_button-next swiper-button-next swiper-button-white\" role=\"button\"><\/a><a aria-label=\"Pause Slideshow\" class=\"wp-block-jetpack-slideshow_button-pause\" role=\"button\"><\/a><div class=\"wp-block-jetpack-slideshow_pagination swiper-pagination swiper-pagination-white\"><\/div><\/div><\/div>\n\n\n\n<p>Despite high energy-efficiency standards, buildings account for around 40% of the CO2 emissions in Germany. This is why a number of scientists have published a manifesto with the aim of initiating a change of policy in the building and refurbishment sectors. \u201cWe have been relying on the same policy for decades \u2013 without achieving significant CO2 savings,\u201d says Dirk E. Hebel, Professor of Sustainable Construction at KIT\u2019s Department of Architecture and co-author of the manifesto. Since the oil crisis in the 1970s, the focus lies on the efficient use of energy. \u201cTo meet the housing subsidy standards, buildings must be insulated effectively. While the HVAC technology is becoming increasingly com-plex, energy consumption stagnates and emissions remain on a high level. We need to give up focusing on efficiency and tackle the emissions side directly,\u201d says Hebel.&nbsp;<\/p>\n\n\n\n<p>The initiative proposes that the amount of CO2 emissions over a building\u2019s entire life cycle be considered. This includes the production of the materials, the construction of the building, and its operation. \u201cOnly if a clear CO2 target value \u2013 which must be at net zero by 2045 \u2013 is met, a building permit should be granted,\u201d says Hebel. Take Denmark as a model: The Danish authorities specify target values in kilograms of CO2 equivalent per square meter of floor space and lower those targets regularly. The current value is 7.1 kilograms. Those who undershoot the target value are entitled to construct, reconstruct, refurbish, or extend a building. No matter whether this is achieved through preservation of building stock, use of recycled materials or by operating with renewable energy \u2013 it is the result that counts. &#8211;&nbsp;Extract of Interview by Christoph Karcher. LooKIT 0225, 2025.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Despite high energy-efficiency standards, buildings account for around 40% of the CO2 emissions in Germany. This is why a number of scientists have published a manifesto with the aim of initiating a change of policy in the building and refurbishment sectors. \u201cWe have been relying on the same policy for decades \u2013 without achieving significant [&hellip;]<\/p>\n","protected":false},"author":22,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[20,19],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8IIze-2Ev","_links":{"self":[{"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/posts\/10199"}],"collection":[{"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/comments?post=10199"}],"version-history":[{"count":5,"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/posts\/10199\/revisions"}],"predecessor-version":[{"id":10210,"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/posts\/10199\/revisions\/10210"}],"wp:attachment":[{"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/media?parent=10199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/categories?post=10199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nb.ieb.kit.edu\/index.php\/wp-json\/wp\/v2\/tags?post=10199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}