{"id":140234,"date":"2024-03-11T07:15:00","date_gmt":"2024-03-11T06:15:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=140234"},"modified":"2024-03-07T10:55:26","modified_gmt":"2024-03-07T09:55:26","slug":"cost-of-direct-air-carbon-capture-to-remain-higher-than-hoped","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/cost-of-direct-air-carbon-capture-to-remain-higher-than-hoped\/","title":{"rendered":"Cost of direct air carbon capture to remain higher than hoped"},"content":{"rendered":"\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The researchers compared the potential costs of three technologies that are already in use: the method used by ETH spin-\u200boff Climeworks, carbon capture using aqueous solutions, and carbon capture using calcium oxide. <\/strong><\/li>\n\n\n\n<li><strong>From today\u2019s perspective, none of these technologies has clear advantages over the others in terms of potential costs. All three technologies should therefore be further developed, say the researchers.<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>The cost of removing large quantities of CO<sub>2<\/sub> from the air will fall in the medium term, but not as much as previously hoped. This is the conclusion reached by ETH researchers on the basis of new calculations. Efforts to reduce carbon emissions should therefore continue at pace, says the research team.<\/strong><\/p>\n\n\n<div class=\"wp-block-image is-style-default\">\n<figure class=\"alignright is-resized\"><img decoding=\"async\" src=\"https:\/\/ethz.ch\/en\/news-and-events\/eth-news\/news\/2024\/03\/cost-of-direct-air-carbon-capture-to-remain-higher-than-hoped\/_jcr_content\/articleLeadImage\/image.imageformat.carousel.945464866.jpg\" alt=\"An installation from the ETH spin-off Climeworks\" style=\"width:350px\"\/><figcaption class=\"wp-element-caption\">The ETH spin-\u200boff Climeworks operates a plant in Iceland that currently extracts around 4000 tonnes of CO<sub>2<\/sub> per year. \u00a9 Climeworks<\/figcaption><\/figure><\/div>\n\n\n<p>Switzerland plans to reduce its net carbon emissions to zero by no later than 2050. To achieve this, it will need to drastically reduce its greenhouse gas emissions. In its climate strategy, the Swiss government acknowledges that some of these emissions, particularly in agriculture and industry, are difficult or impossible to avoid. Swiss climate policy therefore envisages actively removing 5 million tonnes of CO<sub>2<\/sub> from the air and permanently storing it underground. By way of comparison, the Intergovernmental Panel on Climate Change (IPCC) estimates that up to 13 billion tonnes of CO<sub>2<\/sub> will need to be removed from the atmosphere every year from 2050.<\/p>\n\n\n\n<p>These targets will be hard to achieve unless ways can be found to reduce the cost of direct air capture (DAC) technologies. ETH spin-\u200boff Climeworks operates a plant in Iceland that currently captures 4,000 tonnes of CO<sub>2<\/sub> a year, at a cost per tonne of between 1,000 and 1,300 dollars. But how quickly can these costs come down as deployment increases?<\/p>\n\n\n\n<p>ETH researchers have developed a new method that provides a more accurate estimate of the future cost of various DAC technologies. As the technologies are scaled up, direct air capture will become significantly cheaper \u2013 though not as cheap as some stakeholders currently anticipate. Rather than the oft-\u200bcited figure of 100 to 300 US dollars, the researchers suggest the costs are more likely to be between 230 and 540 dollars.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cJust because DAC technologies are available, it certainly doesn\u2019t mean we can relax our efforts to cut carbon emissions. That said, it\u2019s still important to press ahead with the expansion of DAC plants, because we will need these technologies for emissions that are difficult or impossible to avoid,\u201d says <strong>Bjarne Steffen<\/strong>, ETH Professor of Climate Finance and Policy. He developed the new method together with Katrin Sievert, a doctoral student in his research group, and ETH Professor Tobias Schmidt.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Three technologies and their costs<\/h3>\n\n\n\n<p>The ETH researchers applied their method to three direct air capture technologies. The goal was to compare how the cost of each technology is likely to evolve over time. Their findings suggest that the process developed by Swiss company Climeworks, in which a solid filter with a large surface area traps CO<sub>2<\/sub> particles, could cost between 280 and 580 US dollars per tonne by 2050.<\/p>\n\n\n\n<p>The estimated costs of the other two DAC technologies fall within a similar range. The researchers calculated a price of between 230 and 540 dollars a tonne for the capture of CO<sub>2<\/sub> from the atmosphere using an aqueous solution of potassium hydroxide, a process that has been commercialised, for example, by Canadian company Carbon Engineering. The cost of carbon capture using calcium oxide derived from limestone was estimated at between 230 and 835 dollars. This latter method is offered by US company Heirloom Carbon Technologies, among others.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Focus on components<\/h3>\n\n\n\n<p>Estimating how the cost of new technologies will change over time is particularly difficult in situations where very little empirical information is available. This lack of real-\u200bworld data represents a challenge for DAC technologies: they haven\u2019t been in use long enough to allow projections to be made as to how their cost might evolve in the future. To address this dilemma, the ETH researchers focused on the individual components of the different DAC systems and estimated their cost one by one. They then asked 30 industry experts to assess the design complexity of each technological component and determine how easy it would be to standardise.<\/p>\n\n\n\n<p>The researchers based their work on certain assumptions: namely, that the cost of less complex components that can be mass-\u200bproduced will fall more sharply, while the cost of complex parts that must be tailored to each individual system will fall only slowly. DAC systems also include mature components such as compressors, which cannot feasibly be made much cheaper. Once the researchers had estimated the cost of each individual part, they then added the cost of integrating all the components and the costs of energy and operation.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Despite significant uncertainties in their calculations, the researchers\u2019 message was clear: \u201cAt present, it is not possible to predict which of the available technologies will prevail. It is therefore crucial that we continue to pursue all the options,\u201d says Katrin Sievert, lead author of the study, which recently appeared in the journal <em>Joule<\/em>.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Reference<\/h3>\n\n\n\n<p>Sievert K, Schmidt T, Steffen B: Considering technology characteristics to project future costs of direct air capture, Joule, 01.03.2024, doi: <a href=\"https:\/\/doi.org\/10.1016\/j.joule.2024.02.005\" target=\"_blank\" rel=\"noreferrer noopener\">external page10.1016\/j.joule.2024.02.005call_made<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The cost of removing large quantities of CO2 from the air will fall in the medium term, but not as much as previously hoped. This is the conclusion reached by ETH researchers on the basis of new calculations. Efforts to reduce carbon emissions should therefore continue at pace, says the research team. Switzerland plans to [&#8230;]<\/p>\n","protected":false},"author":105,"featured_media":140238,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","nova_meta_subtitle":"ETH researchers estimate the cost of removing 1 tonne of CO2 from the air in the year 2050 to be between 230 and 540 US dollars. This is twice as high as previous estimates","footnotes":""},"categories":[5571],"tags":[23569,10744,15386,19644,18368,15310],"supplier":[10148,5419,277,3345,20831],"class_list":["post-140234","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-co2-based","tag-aircapture","tag-carboncapture","tag-carbonemission","tag-carbonremoval","tag-co2capture","tag-greenhousegas","supplier-carbon-engineering","supplier-climeworks","supplier-eidgenoessische-technische-hochschule-zuerich-eth-zuerich","supplier-intergovernmental-panel-on-climate-change-ipcc","supplier-joule-journal"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/140234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/users\/105"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=140234"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/140234\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media\/140238"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=140234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=140234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=140234"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=140234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}