{"id":70853,"date":"2026-04-04T18:16:08","date_gmt":"2026-04-04T12:46:08","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=70853"},"modified":"2026-04-04T18:16:34","modified_gmt":"2026-04-04T12:46:34","slug":"nuclear-fusion-costs-too-optimistic","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/04-04-2026\/nuclear-fusion-costs-too-optimistic","title":{"rendered":"Nuclear Fusion Cost Models Too Optimistic to be Viable: Experts Warn"},"content":{"rendered":"\n<p><strong>Syllabus: GS3\/Science and Technology<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Scientists have found that investors are overestimating the <strong>experience rate of nuclear fusion.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>About<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The<strong> experience rate of nuclear fusion<\/strong> refers to how the cost or efficiency of fusion technology improves with accumulated experience.<\/li>\n\n\n\n<li>Current nuclear fusion models often assume experience rates between 8% and 20%.\n<ul class=\"wp-block-list\">\n<li>After examining the unit size, design complexity, and need for customisation, Scientists found that fusion power plants will likely see experience rates of 2% to 8%.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is Nuclear Fusion?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nuclear fusion is the process by which <strong>two light atomic nuclei<\/strong> combine to form <strong>a single heavier one<\/strong> while releasing <strong>massive amounts of energy.<\/strong><\/li>\n\n\n\n<li>Fusion reactions take place in a <strong>state of matter called plasma <\/strong>\u2014 a hot, charged gas made of positive ions and free-moving electrons with <strong>unique properties distinct from solids, liquids or gases.<\/strong><\/li>\n\n\n\n<li>The sun, along with all other stars, is powered by this reaction.\u00a0<\/li>\n\n\n\n<li><strong>Process: <\/strong>The <strong>Deuterium (H-2) and Tritium (H-3)<\/strong> atoms are combined to form <strong>Helium (He-4)<\/strong>. A free and fast neutron is also released as a result.\n<ul class=\"wp-block-list\">\n<li>The neutron is powered by the kinetic energy converted from the \u2018extra\u2019 mass left over after the combination of lighter nuclei of deuterium and tritium occurs.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img data-dominant-color=\"295e91\" data-has-transparency=\"false\" loading=\"lazy\" decoding=\"async\" width=\"655\" height=\"367\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/04\/image-1.webp\" alt=\"\" class=\"not-transparent wp-image-70854\" style=\"--dominant-color: #295e91; width:379px;height:auto\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/04\/image-1.webp 655w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/04\/image-1-300x168.webp 300w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Challenges of Fusion Energy<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Extreme temperature requirement:<\/strong> It needs ~100 million \u00b0C to initiate and sustain fusion.<\/li>\n\n\n\n<li><strong>Plasma instability:<\/strong> Hot plasma is highly unstable and difficult to confine.<\/li>\n\n\n\n<li><strong>Magnetic confinement complexity:<\/strong> Advanced systems like Tokamak are technically challenging and costly.<\/li>\n\n\n\n<li><strong>Net energy gain issue:<\/strong> Achieving sustained energy output greater than input is still difficult.<\/li>\n\n\n\n<li><strong>Material degradation:<\/strong> Reactor walls face intense neutron bombardment and heat damage.<\/li>\n\n\n\n<li><strong>High cost &amp; long gestation:<\/strong> Projects like ITER require massive funding and decades of development.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Significance of Fusion Energy<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Clean Energy: <\/strong>Nuclear fusion just like fission does not emit carbon dioxide or other greenhouse gases into the atmosphere, so it could be a long-term source of low-carbon electricity from the second half of this century onwards.<\/li>\n\n\n\n<li><strong>More Efficient: <\/strong>Fusion could generate four times more energy per kilogram of fuel than fission (used in nuclear power plants) and nearly four million times more energy than burning oil or coal.<\/li>\n\n\n\n<li><strong>Fusion fuel is plentiful and easily accessible: <\/strong>Deuterium can be extracted inexpensively from seawater, and tritium can potentially be produced from the reaction of fusion-generated neutrons with naturally abundant lithium.\n<ul class=\"wp-block-list\">\n<li>These fuel supplies would last for millions of years.\u00a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Safer to Use:<\/strong> Future fusion reactors are also intrinsically safe and are not expected to produce high activity or long-lived nuclear waste.\n<ul class=\"wp-block-list\">\n<li>Furthermore, as the fusion process is difficult to start and maintain, there is no risk of a runaway reaction and meltdown.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Difference between Nuclear Fusion and Fission<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-dominant-color=\"d9d9d9\" data-has-transparency=\"false\" style=\"--dominant-color: #d9d9d9;\" loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"255\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/04\/image-26.png\" alt=\"\" class=\"not-transparent wp-image-70855\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/04\/image-26.png 400w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/04\/image-26-300x191.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div>\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/nuclear-fusion-cost-models-too-optimistic-to-be-viable-experts-warn\/article70816543.ece#:~:text=Current%20nuclear%20fusion%20models%20often,figures%20are%20likely%20too%20high.\" target=\"_blank\" rel=\"noopener\"><strong>TH<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong> Context <\/strong><\/p>\n<li class=\"ms-5\"> Scientists have found that investors are overestimating the experience rate of nuclear fusion. <\/li>\n<p><\/p>\n<p><strong> About <\/strong><\/p>\n<li class=\"ms-5\"> The experience rate of nuclear fusion refers to how the cost or efficiency of fusion technology improves with accumulated experience. <\/li>\n<li class=\"ms-5\"> Current nuclear fusion models often assume experience rates between 8% and 20%. <\/li>\n<li class=\"ms-5\"> After examining the unit size, design complexity, and need for customisation, Scientists found that fusion power plants will likely see experience rates of 2% to 8%. <\/li>\n<p><a href=\" https:\/\/www.nextias.com\/ca\/current-affairs\/04-04-2026\/nuclear-fusion-costs-too-optimistic \" class=\"btn btn-primary btn-sm float-end\">Read More<\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-70853","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/70853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=70853"}],"version-history":[{"count":2,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/70853\/revisions"}],"predecessor-version":[{"id":70857,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/70853\/revisions\/70857"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=70853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=70853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=70853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}