{"id":551,"date":"2026-08-05T10:56:33","date_gmt":"2026-08-05T10:56:33","guid":{"rendered":"https:\/\/baarda.ch\/?p=551"},"modified":"2026-08-05T10:56:33","modified_gmt":"2026-08-05T10:56:33","slug":"so-compared-to-nuclear-you-need-a-lot-of-windmills-also-maybe-in-land-surface-area-but-what-are-the-perhaps-dangers-of-nuclear-reactors","status":"publish","type":"post","link":"https:\/\/baarda.ch\/?p=551","title":{"rendered":"So compared to nuclear you need a lot of windmills, also maybe in land surface area, but what are the perhaps dangers of nuclear reactors?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Gemini: While nuclear power produces massive amounts of continuous energy on a small land footprint, it carries a unique set of technical, environmental, and financial risks.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"820\" src=\"https:\/\/baarda.ch\/wp-content\/uploads\/2026\/08\/afbeelding-1024x820.png\" alt=\"\" class=\"wp-image-552\" srcset=\"https:\/\/baarda.ch\/wp-content\/uploads\/2026\/08\/afbeelding-1024x820.png 1024w, https:\/\/baarda.ch\/wp-content\/uploads\/2026\/08\/afbeelding-300x240.png 300w, https:\/\/baarda.ch\/wp-content\/uploads\/2026\/08\/afbeelding-768x615.png 768w, https:\/\/baarda.ch\/wp-content\/uploads\/2026\/08\/afbeelding-1536x1229.png 1536w, https:\/\/baarda.ch\/wp-content\/uploads\/2026\/08\/afbeelding.png 2048w\" sizes=\"auto, (max-width: 706px) 89vw, (max-width: 767px) 82vw, 740px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Containment structures seal the reactor core from the external environment.. Bron: VectorMine \/ Getty Images<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Key Dangers and Challenges<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Severe Core Accidents and Radioactive Release<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The most severe technical hazard is a loss-of-coolant accident leading to a core meltdown (as occurred at Chernobyl and Fukushima).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Decay Heat:<\/strong> Even after a reactor shuts down, radioactive fission products continue generating heat. If active cooling fails, temperatures escalate, melting fuel rods and potentially breaching the containment vessel.<\/li>\n\n\n\n<li><strong>Environmental Fallout:<\/strong> Radiation leaks can contaminate water supplies, land, and ecosystems, requiring multi-decade exclusion zones and costly cleanup operations.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. High-Level Radioactive Waste Storage<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nuclear fission generates spent fuel assemblies containing isotopes like Plutonium-239 and Technetium-99, which remain dangerous for tens to hundreds of thousands of years.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Long-Term Geological Storage:<\/strong> Permanent solutions\u2014deep geological repositories like Finland\u2019s Onkalo\u2014are technically feasible but politically difficult to implement.<\/li>\n\n\n\n<li><strong>Interim Cooling:<\/strong> Most spent fuel is stored on-site in cooling pools or dry casks, leaving it vulnerable to long-term storage risks if permanent disposal is delayed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Geopolitical, War, and Security Vulnerabilities<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nuclear facilities are high-value targets during armed conflicts or geopolitical crises.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Direct Targeting &amp; Power Disruption:<\/strong> War near active reactors (such as the Zaporizhzhia plant in Ukraine) risks power grid disconnection, disrupting active cooling systems.<\/li>\n\n\n\n<li><strong>Proliferation Risk:<\/strong> The enrichment technologies used to produce reactor fuel (specifically uranium enrichment and spent fuel reprocessing) can potentially be diverted toward weapons-grade materials.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Financial and Construction Overrun Risks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">While not a physical hazard, economic risk is often the primary reason nuclear projects stall.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Capital Intensity:<\/strong> Reactors cost billions of euros upfront and take 10 to 15 years to build.<\/li>\n\n\n\n<li><strong>Cost Overruns:<\/strong> Modern European reactors (such as Olkiluoto 3 in Finland or Flamanville 3 in France) experienced years of delays and budget overruns, making private financing difficult without state guarantees.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Statistical Context &amp; Modern Mitigations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Despite these hazards, modern <strong>Generation III+ reactors<\/strong> incorporate passive safety systems that rely on gravity and natural convection to cool the core without external electricity or human intervention. Statistically, on a <strong>deaths-per-terawatt-hour (TWh)<\/strong> basis\u2014including historical disasters\u2014nuclear energy remains among the safest power sources, comparable to wind and solar and orders of magnitude safer than coal or oil air pollution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want to compare the mortality rate per TWh of nuclear against fossil fuels and renewables?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Yes please<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to global energy research compiled by <em>Our World in Data<\/em> (drawing on peer-reviewed studies by Markandya &amp; Wilkinson, Sovacool et al., and UNSCEAR), the differences in mortality rates per unit of electricity generated are dramatic.<sup><\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mortality estimates account for both <strong>air pollution<\/strong> (which causes chronic respiratory and cardiovascular illnesses) and <strong>accidents across the supply chain<\/strong> (mining, transport, construction, maintenance, and plant operation).<sup><\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mortality Rates per Terawatt-Hour (TWh)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><em>1 TWh is roughly the annual electricity consumed by 150,000 European citizens.<\/em><sup><\/sup><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Energy Source<\/th><th>Estimated Deaths per TWh<\/th><th>Main Cause of Mortality<\/th><\/tr><\/thead><tbody><tr><td><strong>Brown Coal (Lignite)<\/strong><\/td><td><strong>32.72<\/strong><\/td><td>Severe localized air pollution &amp; dangerous mining<\/td><\/tr><tr><td><strong>Coal<\/strong><\/td><td><strong>24.62<\/strong><\/td><td>Particulate air pollution &amp; coal mining accidents<\/td><\/tr><tr><td><strong>Oil<\/strong><\/td><td><strong>18.43<\/strong><\/td><td>Air pollution &amp; extraction\/refining hazards<\/td><\/tr><tr><td><strong>Biomass<\/strong><\/td><td><strong>4.63<\/strong><\/td><td>Indoor and outdoor particulate pollution<\/td><\/tr><tr><td><strong>Natural Gas<\/strong><\/td><td><strong>2.82<\/strong><\/td><td>Air pollution &amp; pipeline\/extraction accidents<\/td><\/tr><tr><td><strong>Hydropower<\/strong><\/td><td><strong>1.30<\/strong> <em>(~0.04 baseline)<\/em><\/td><td>Dam failures (dominated by the 1975 Banqiao Dam collapse)<\/td><\/tr><tr><td><strong>Wind<\/strong><\/td><td><strong>0.04<\/strong><\/td><td>Maintenance accidents (e.g., falls, offshore drowning)<\/td><\/tr><tr><td><strong>Nuclear<\/strong><\/td><td><strong>0.03<\/strong><\/td><td>Major historical accidents (includes Chernobyl &amp; Fukushima)<\/td><\/tr><tr><td><strong>Solar<\/strong><\/td><td><strong>0.02<\/strong><\/td><td>Roof falls during installation &amp; supply chain accidents<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Key Takeaways<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Fossil Fuels Kill via Air Pollution:<\/strong> The overwhelming majority of energy-related deaths do not come from sudden industrial disasters, but from silent, chronic particulate pollution generated by burning coal, oil, and gas.<\/li>\n\n\n\n<li><strong>Nuclear, Wind, and Solar are Orders of Magnitude Safer:<\/strong> Nuclear power causes over <strong>99.8% fewer deaths than coal<\/strong> and <strong>98.9% fewer deaths than natural gas<\/strong> per unit of energy produced.<\/li>\n\n\n\n<li><strong>Statistical Perception Gap:<\/strong> Public fear of nuclear energy is driven by rare, high-visibility disasters (Chernobyl, Fukushima). In contrast, fossil fuel mortality occurs continuously and invisibly every day.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Can we look at the cost to build and maintain one nuclear reactor?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Evaluating the cost of a single nuclear reactor involves separating the upfront construction cost (<strong>CAPEX<\/strong>) from the ongoing operational cost (<strong>OPEX<\/strong>) and long-term decommissioning.<sup><\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nuclear energy is defined by an extreme cost structure: <strong>70%\u201380% of the total lifetime cost is locked in before the reactor generates its first kilowatt-hour<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Upfront Capital Cost (CAPEX) to Build<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The total cost to construct a single large commercial reactor (~1,000 to 1,600 MW) varies drastically depending on the country, regulatory environment, and construction delays.<sup><\/sup><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>&#171;Overnight&#187; Construction Cost:<\/strong> This is the base cost of materials, engineering, and labor assuming zero interest during construction.\n<ul class=\"wp-block-list\">\n<li><strong>Western Nations (FOAK &#8211; First-of-a-Kind):<\/strong> $6,000 to $10,000+ per kW of capacity. A single 1,000 MW reactor costs <strong>$6 billion to $10+ billion<\/strong> in base physical build costs alone.<\/li>\n\n\n\n<li><strong>Standardized \/ Serial Builds (e.g., South Korea, China):<\/strong> $2,200 to $3,500 per kW. A single 1,000 MW reactor costs <strong>$2.2 billion to $3.5 billion<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Financing &amp; Interest During Construction (The &#171;Capital&#187; Trap):<\/strong> Because nuclear plants take 7 to 15 years to build, compound interest on multi-billion-dollar loans during construction often adds <strong>30% to 50%<\/strong> to the final price tag before opening.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Real-World Western Benchmarks (Recent Projects)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Plant Vogtle Units 3 &amp; 4 (USA):<\/strong> ~<strong>$35 billion<\/strong> combined (~$17.5 billion per 1,100 MW AP1000 reactor) due to massive delay-related financing costs.<\/li>\n\n\n\n<li><strong>Olkiluoto 3 (Finland):<\/strong> ~<strong>\u20ac11 billion<\/strong> (~$12 billion) for a single 1,600 MW EPR reactor, up from an initial estimate of \u20ac3.3 billion.<\/li>\n\n\n\n<li><strong>Hinkley Point C (UK):<\/strong> Estimated <strong>\u00a331 billion\u2013\u00a335 billion<\/strong> for two 1,600 MW EPR reactors (~$20 billion+ per reactor).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. Maintenance &amp; Operating Costs (OPEX)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Once a reactor is operational, it is relatively cheap to run and benefits from a high <strong>capacity factor<\/strong> (~90%+ uptime).<sup><\/sup><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Average Generating Cost:<\/strong> ~$31 to $37 per MWh produced (US fleet average). For a single 1,000 MW reactor running 24\/7, this translates to roughly <strong>$250 million to $320 million per year<\/strong> in total operational expenditures.<\/li>\n\n\n\n<li><strong>Cost Breakdown of OPEX:<\/strong>\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Operations &amp; Maintenance (O&amp;M):<\/strong> ~60%\u201370% of OPEX. High labor expenses for specialized engineers, security teams, continuous safety inspections, and periodic refuel outages.<\/li>\n\n\n\n<li><strong>Fuel Costs:<\/strong> ~15%\u201320% of OPEX. Uranium supply, enrichment, and fabrication are relatively cheap relative to total output, making nuclear far less sensitive to fuel price spikes than gas or coal.<\/li>\n\n\n\n<li><strong>Capital Additions \/ Maintenance Upgrades:<\/strong> ~15%\u201320% of OPEX. Regular replacement of pumps, steam generators, and digital control systems over a 40- to 60-year lifespan.<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. End-of-Life: Decommissioning &amp; Waste Storage<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Decommissioning:<\/strong> Dismantling a contaminated reactor core and site restoration costs <strong>$500 million to $1.5 billion<\/strong> per reactor. Utilities are required by law in most countries to accumulate this money during the reactor&#8217;s operating life into a dedicated decommissioning fund (typically charging ~$0.001 to $0.002 per kWh).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Cost Summary (Single 1,000 MW Reactor)<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Expense Phase<\/th><th>Estimated Cost Range<\/th><th>Primary Cost Drivers<\/th><\/tr><\/thead><tbody><tr><td><strong>Upfront Construction (CAPEX)<\/strong><\/td><td><strong>$3B \u2013 $15B+<\/strong><\/td><td>Labor, concrete\/steel, regulatory delays, loan interest<\/td><\/tr><tr><td><strong>Annual Operations (OPEX)<\/strong><\/td><td><strong>$250M \u2013 $320M \/ year<\/strong><\/td><td>Specialized staff, security, routine maintenance, fuel<\/td><\/tr><tr><td><strong>Decommissioning Fund<\/strong><\/td><td><strong>$500M \u2013 $1.5B<\/strong> <em>(accumulated over lifetime)<\/em><\/td><td>Safe core dismantling, site de-radiation, long-term storage<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Gemini: While nuclear power produces massive amounts of continuous energy on a small land footprint, it carries a unique set of technical, environmental, and financial risks. Containment structures seal the reactor core from the external environment.. Bron: VectorMine \/ Getty Images Key Dangers and Challenges 1. Severe Core Accidents and Radioactive Release The most severe &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/baarda.ch\/?p=551\" class=\"more-link\"><span class=\"screen-reader-text\">&#171;So compared to nuclear you need a lot of windmills, also maybe in land surface area, but what are the perhaps dangers of nuclear reactors?&#187;<\/span> weiterlesen<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-551","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts\/551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=551"}],"version-history":[{"count":1,"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts\/551\/revisions"}],"predecessor-version":[{"id":553,"href":"https:\/\/baarda.ch\/index.php?rest_route=\/wp\/v2\/posts\/551\/revisions\/553"}],"wp:attachment":[{"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/baarda.ch\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}