{"id":19466,"date":"2026-08-05T07:03:11","date_gmt":"2026-08-05T07:03:11","guid":{"rendered":"https:\/\/8657085.xyz\/?p=19466"},"modified":"2026-08-05T07:03:11","modified_gmt":"2026-08-05T07:03:11","slug":"tiny-light-big-dream-harvesting-power-from-soil-in-japan","status":"publish","type":"post","link":"https:\/\/8657085.xyz\/?p=19466","title":{"rendered":"Tiny light, big dream: Harvesting power from soil in Japan"},"content":{"rendered":"<p> <div style=\"display: grid; grid-template-columns: 300px 160px; gap: 2px; width: 460px; background: #eee; padding: 2px;\">\r\n\r\n  <!-- \u6574\u884c\u5bbd\u5e7f\u544a -->\r\n  <div style=\"grid-column: 1\/-1; width: 460px; height: 250px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876674\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  <div style=\"grid-column: 1\/-1; width: 460px; height: 90px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876676\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n\r\n  <!-- \u5de6\u4fa7\u7ad6\u6392 -->\r\n  <div style=\"height: 250px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876672\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  <div style=\"height: 500px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876680\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n\r\n  <!-- \u53f3\u4fa7\u6469\u5929\u697c\uff08\u548c\u5de6\u4fa7\u5b8c\u5168\u5bf9\u9f50\uff09 -->\r\n  <div style=\"grid-row: 3\/5; height: 750px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876678\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  \r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e6\" data-zoneid=\"5876682\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n<\/div><br \/>\n<\/p>\n<div style=\"padding-right:0;padding-left:0\">\n<p>Glinting in the night, halfway up a hill in Japan, the greenhouse-like \u201cKu-An\u201d test lab is lit by electricity harnessed from 1,500 wooden boxes of soil and compost.<\/p>\n<p>Designer Satoshi Nakagawa has long battled sceptics, but believes that the technology powering the 800 LEDs has a role to play in solving humanity\u2019s energy conundrum.<\/p>\n<p>And, failing that, it at least looks nice \u2014 and gets people thinking.<\/p>\n<p>\u201cAs the population moves toward 10 billion, energy issues will become just as critical as food issues,\u201d said Nakagawa, chief executive of design firm Tripod Design.<\/p>\n<p>\u201cEven if it\u2019s just a small contribution, I want people to be able to produce their own electricity using the soil around them,\u201d the Japanese product designer and engineer told AFP.<\/p>\n<p>The 72-year-old said he has pioneered \u201cmicropower collection (MPC)\u201d \u2014 a way to source tiny dribbles of electrical current from everything from wine to French bread.<\/p>\n<p>His system uses the same mechanism as the voltaic pile, the world\u2019s first electrical battery giving a continuous current invented in 1799 by Alessandro Volta.<\/p>\n<p>It involves inserting electrodes made of materials such as zinc and copper into substances that contain moisture or ions, and then collecting the small but steady electrical currents.<\/p>\n<p>Within eyeshot of the glass-covered \u201cKu-An\u201d, which he has rigged up in the remote town of Hitachi-ota, is \u201cLu-An\u201d, which opened last year.<\/p>\n<p>\u201cLu-An\u201d has some 2,000 plastic cylinders of soil and compost to give 100 watts of output, enough to power a rice cooker and other appliances.<\/p>\n<p>Nakagawa said the technology could be applied, for example, in places without power, including after natural disasters.<\/p>\n<p>It could also provide enough electricity for off-grid devices requiring little power, such as sensors to detect pest damage to farmland, overflowing rivers, landslides or even burglar alarms.<\/p>\n<p>Once installed, the technology produces no carbon dioxide, and unlike other renewables such as solar or wind power is not weather-dependent, Nakagawa said.<\/p>\n<p>\u2013 \u2018Move our emotions\u2019 \u2013<\/p>\n<p>Prototype products include a \u201cstand-alone node\u201d \u2014 a bollard-like object powered by soil which enables data communication with a satellite.<\/p>\n<p>He has also used the technology for art installations with flexible rods that, when speared into the ground, have tips that glow in the dark like fireflies on tall grass.<\/p>\n<p>Professional engineers have said Nakagawa\u2019s products can be aesthetically pleasing and thought-provoking, but that his system is not practical.<\/p>\n<p>\u201cIts output is significantly inferior compared with regular batteries or car batteries,\u201d said Masayuki Nakao, engineering professor emeritus at the University of Tokyo, who has known Nakagawa for years.<\/p>\n<p>\u201cBut what is notable about Mr Nakagawa\u2019s works is that the light that he creates has the power to move our emotions. People are moved by it when they see the light. They are beautiful,\u201d said Nakao.<\/p>\n<p>Nakagawa has shrugged off his sceptics and said engineers must build new products that benefit from MPC. \u00a0<\/p>\n<p>\u201cI say it\u2019s micro power, so we have to think about what micro power can do,\u201d he said.<\/p>\n<p>\u201cWe should look at the combination of various energy-harvesting technologies as crucial to our overall energy strategy,\u201d he said.<\/p>\n<p>\u201cPossibility is without limit.\u201d<\/p>\n<\/div>\n<p><!-- \u603b\u5bb9\u5668\uff1a\u6700\u5927\u5bbd908px Grid\u7d27\u51d1\u5e03\u5c40 -->\r\n<div style=\"display: grid; grid-template-columns: 728px 160px; gap:2px; width:908px; background:#eee; padding:2px;\">\r\n\r\n  <!-- \u901a\u680f\u9876\u90e8\uff1a\u6700\u5927\u6a2a\u5e45 908x258 \u8de8\u6574\u884c -->\r\n  <div style=\"grid-column:1\/-1; height:258px; background:#ff6b6b; display:grid; place-items:center;\">\r\n    <!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114307\" data-width=\"908\" data-height=\"258\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114307});<\/script>\r\n<!--JuicyAds END-->\r\n  <\/div>\r\n\r\n  <!-- \u7b2c\u4e8c\u901a\u680f\uff1a728\u00d790 \u901a\u680f -->\r\n  <div style=\"grid-column:1\/-1; 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display:grid; place-items:center;\">\r\n\t<!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114302\" data-width=\"133\" data-height=\"139\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114302});<\/script>\r\n<!--JuicyAds END-->\r\n\t<\/div>\r\n    <div style=\"height:125px; background:#91e7ac; display:grid; place-items:center;\">\r\n\t\r\n<!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114303\" data-width=\"125\" data-height=\"125\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114303});<\/script>\r\n<!--JuicyAds END-->\r\n\t<\/div>\r\n  <\/div>\r\n\r\n  <!-- \u53f3\u4fa7\u7ad6\u680f\uff1a160\u00d7600 \u6574\u5217\u9ad8\u5e7f\u544a -->\r\n  <div style=\"grid-row:3\/8; height:600px;  display:grid; place-items:center;\">\r\n    <!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114301\" data-width=\"160\" data-height=\"600\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114301});<\/script>\r\n<!--JuicyAds END-->\r\n  <\/div>\r\n\r\n<\/div><br \/>\n<br \/> Tiny light, big dream: Harvesting power from soil in Japan<br \/>\n<br \/>#Tiny #light #big #dream #Harvesting #power #soil #Japan<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Glinting in the night, halfway up a hill in Japan, the greenhouse-like \u201cKu-An\u201d test lab&#8230;<\/p>\n","protected":false},"author":1,"featured_media":19467,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[152,2685,15008,3751,104,168,4236,4466],"class_list":["post-19466","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stories","tag-big","tag-dream","tag-harvesting","tag-japan","tag-light","tag-power","tag-soil","tag-tiny"],"featured_image_urls":{"full":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",768,512,false],"thumbnail":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9-150x150.jpg",150,150,true],"medium":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9-300x200.jpg",300,200,true],"medium_large":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",640,427,false],"large":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",640,427,false],"1536x1536":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",768,512,false],"2048x2048":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",768,512,false],"covernews-slider-full":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",768,512,false],"covernews-slider-center":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9-768x500.jpg",768,500,true],"covernews-featured":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9.jpg",768,512,false],"covernews-medium":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9-540x340.jpg",540,340,true],"covernews-medium-square":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/08\/0aa8e5a97b0165fc96935f797ac757c69b5bfed9-400x250.jpg",400,250,true]},"author_info":{"display_name":"admin","author_link":"https:\/\/8657085.xyz\/?author=1"},"category_info":"<a href=\"https:\/\/8657085.xyz\/?cat=7\" rel=\"category\">Stories<\/a>","tag_info":"Stories","comment_count":"0","_links":{"self":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/posts\/19466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19466"}],"version-history":[{"count":0,"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/posts\/19466\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/media\/19467"}],"wp:attachment":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}