{"id":2552,"date":"2026-03-21T10:35:00","date_gmt":"2026-03-21T15:35:00","guid":{"rendered":"https:\/\/techy44.okdiario.com\/en\/?p=2552"},"modified":"2026-03-20T11:26:34","modified_gmt":"2026-03-20T16:26:34","slug":"a-swarm-of-124-energy-fish-in-the-rhine-promises-electricity-for-500-homes","status":"publish","type":"post","link":"https:\/\/okdiario.com\/techy\/en\/a-swarm-of-124-energy-fish-in-the-rhine-promises-electricity-for-500-homes\/2552\/","title":{"rendered":"A swarm of 124 \u201cenergy fish\u201d in the Rhine promises electricity for 500 homes"},"content":{"rendered":"\n<p>What happens when the wind drops and the sun slips away? Officials in Germany think part of the answer may be moving right under the water. <\/p>\n\n\n\n<p>On March 9, 2026, Rhineland-Palatinate approved what it calls the world\u2019s first swarm power plant near Sankt Goar, built around 124 floating &#8220;Energyfish&#8221; micro-hydropower units in a side channel of the Rhine. Three are already operating, and 21 more are planned in the next phase.<\/p>\n\n\n\n<p>If the full fleet is built, the <a href=\"https:\/\/mkuem.rlp.de\/themen\/energie-und-klimaschutz\" target=\"_blank\" rel=\"noopener\">state ministry<\/a> says it could supply electricity to more than 460 households, with generation costs comparable to wind and solar. This will not remake <a href=\"https:\/\/okdiario.com\/techy\/en\/germany-is-looking-to-the-sahara-to-power-its-electricity-grid-with-a-4800-km-submarine-cable-that-will-bring-light-from-the-desert-and-the-plan-is-so-ambitious-that-it-is-already-causing-concern-ac\/1934\/\">Europe\u2019s grid<\/a> on its own, but it goes after a real weak spot in the energy transition.<\/p>\n\n\n\n<div class=\"gb-element-a00da4e5\">\n<div><div class=\"gb-looper-46613eed\">\n<div class=\"gb-loop-item gb-loop-item-a8390598 post-3595 post type-post status-publish format-standard has-post-thumbnail hentry category-business resize-featured-image\">\n<h4 class=\"gb-text gb-text-24a51617\">Also Read: <a href=\"https:\/\/okdiario.com\/techy\/en\/texas-is-full-of-oil-wells-that-barely-produce-but-never-seem-to-die-and-landowners-say-the-real-cost-is-leaking-onto-their-property\/3595\/\">Texas is full of oil wells that barely produce but never seem to die, and landowners say the real cost is leaking onto their property<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<p><a href=\"https:\/\/okdiario.com\/techy\/en\/cubas-solar-push-is-now-a-survival-plan-for-homes-clinics-and-local-business\/2075\/\">Solar panels<\/a> stop at sunset and wind turbines can slow down, but river currents keep moving, which means a steadier stream of clean electricity when homes, businesses, and the electric bill all keep demanding power.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why this stretch of river<\/h2>\n\n\n\n<p>Sankt Goar was not chosen by accident. The Middle Rhine narrows here, accelerating the water to about 1.5 to 2 meters per second (5 to 6.5 ft.\/sec), which officials say is ideal for the system.<\/p>\n\n\n\n<p><a href=\"https:\/\/energyminer.eu\/en\/\" target=\"_blank\" rel=\"noopener\">Energyminer\u2019s own technical page<\/a> lists each Energyfish at about 2.8 by 2.4 by 1.4 meters (9.2 x 7.9 x 4.6 ft.) and roughly 80 kilograms (176 lbs.) with a maximum output of 6 kilowatts. The company also says a school of 100 units can produce about 1.5 gigawatt-hours a year. Quiet, mostly hidden, and small\u2013that is the pitch.<\/p>\n\n\n\n<div class=\"gb-element-6fcb8c94\">\n<div><div class=\"gb-looper-c6463845\">\n<div class=\"gb-loop-item gb-loop-item-afaf1fc8 post-2037 post type-post status-publish format-standard has-post-thumbnail hentry category-military-defense resize-featured-image\">\n<h4 class=\"gb-text gb-text-7c813f8d\">Also Read: <a href=\"https:\/\/okdiario.com\/techy\/en\/cubas-energy-crunch-is-turning-solar-power-into-an-economic-lifeline\/2037\/\">Cuba\u2019s energy crunch is turning solar power into an economic lifeline<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<p>The hard part is not the engineering. It is ecology. <a href=\"https:\/\/okdiario.com\/techy\/en\/the-colossal-dam-built-in-1970-that-remains-spains-most-important-hydroelectric-power-station-a-wall-worthy-of-game-of-thrones\/1873\/\">Conventional hydropower<\/a> often comes with dams, blocked migration routes, and reshaped habitats. <\/p>\n\n\n\n<p>This project is trying a different route. The units are suspended in the river, anchored to the bed, and do not require a weir. The state ministry says a <a href=\"https:\/\/www.lss.ls.tum.de\/en\/aquasys\/research-projects\/translate-to-english-energyfish\/\" target=\"_blank\" rel=\"noopener\">Technical University of Munich<\/a> study found the turbines did not injure migratory fish in the Rhine or alter their behavior. <\/p>\n\n\n\n<p>TUM\u2019s own project page also makes clear that ecological testing is central to judging whether this technology can scale responsibly.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"1013\" src=\"https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/03\/rhine-river-energy-fish-swarm-power-plant-1.jpg\" alt=\"A floating Energyfish micro-hydropower unit anchored in the Rhine River, designed to generate electricity from water currents.\" class=\"wp-image-2554\" title=\"\" srcset=\"https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/03\/rhine-river-energy-fish-swarm-power-plant-1.jpg 1800w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/03\/rhine-river-energy-fish-swarm-power-plant-1-300x169.jpg 300w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/03\/rhine-river-energy-fish-swarm-power-plant-1-768x432.jpg 768w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/03\/rhine-river-energy-fish-swarm-power-plant-1-1536x864.jpg 1536w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/03\/rhine-river-energy-fish-swarm-power-plant-1-150x84.jpg 150w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\" \/><figcaption class=\"wp-element-caption\">The world\u2019s first swarm power plant in Sankt Goar uses 124 floating &#8220;Energyfish&#8221; units to provide a steady stream of carbon-free electricity without the need for dams.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">A small project with bigger stakes<\/h2>\n\n\n\n<p>There are limits, of course. Not every river is deep enough or fast enough to host a system like this, and officials say more projects should follow only in suitable locations. So no, this is not a magic fix. <\/p>\n\n\n\n<div class=\"gb-element-30748dbb\">\n<div><div class=\"gb-looper-7f4d253d\">\n<div class=\"gb-loop-item gb-loop-item-a6f67fa8 post-2503 post type-post status-publish format-standard has-post-thumbnail hentry category-economy resize-featured-image\">\n<h4 class=\"gb-text gb-text-3a06dc1d\">Also Read: <a href=\"https:\/\/okdiario.com\/techy\/en\/a-massive-gold-deposit-valued-at-over-160-billion-has-been-discovered-in-china\/2503\/\">A massive gold deposit valued at over $160 billion has been discovered in China<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<p>But Energyminer co-CEO Richard Eckl called St. Goar the company\u2019s &#8220;proof of scale,&#8221; and that is really what this project is: a test of whether a river can deliver more clean power without another large dam, more noise, or a bigger construction footprint on the landscape. <\/p>\n\n\n\n<p>And that is why this quiet stretch of the Rhine matters beyond one town.<\/p>\n\n\n\n<p>The official statement was published on <a href=\"https:\/\/mkuem.rlp.de\/service\/pressemitteilungen\/detail\/katrin-eder-weltweit-erstes-energyfish-schwarmkraftwerk-liefert-klima-und-umweltfreundlichen-strom-aus-dem-rhein\" target=\"_blank\" rel=\"noopener\"><em>Ministry for Climate Protection, Environment, Energy and Mobility of Rhineland-Palatinate<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What happens when the wind drops and the sun slips away? Officials in Germany think part of the answer may &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"A swarm of 124 \u201cenergy fish\u201d in the Rhine promises electricity for 500 homes\" class=\"read-more button\" href=\"https:\/\/okdiario.com\/techy\/en\/a-swarm-of-124-energy-fish-in-the-rhine-promises-electricity-for-500-homes\/2552\/#more-2552\" aria-label=\"Read more about A swarm of 124 \u201cenergy fish\u201d in the Rhine promises electricity for 500 homes\">Read more<\/a><\/p>\n","protected":false},"author":6,"featured_media":2553,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-2552","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","resize-featured-image"],"_links":{"self":[{"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/posts\/2552","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/comments?post=2552"}],"version-history":[{"count":1,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/posts\/2552\/revisions"}],"predecessor-version":[{"id":2555,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/posts\/2552\/revisions\/2555"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/media\/2553"}],"wp:attachment":[{"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/media?parent=2552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/categories?post=2552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/tags?post=2552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}