{"id":4478,"date":"2026-05-23T07:45:00","date_gmt":"2026-05-23T12:45:00","guid":{"rendered":"https:\/\/okdiario.com\/techy\/en\/?p=4478"},"modified":"2026-05-22T06:54:40","modified_gmt":"2026-05-22T11:54:40","slug":"a-country-is-sinking-23-concrete-giants-into-the-sea-to-build-the-worlds-first-artificial-energy-island-for-offshore-wind","status":"publish","type":"post","link":"https:\/\/okdiario.com\/techy\/en\/a-country-is-sinking-23-concrete-giants-into-the-sea-to-build-the-worlds-first-artificial-energy-island-for-offshore-wind\/4478\/","title":{"rendered":"A country is sinking 23 concrete giants into the sea to build the world\u2019s first artificial energy island for offshore wind"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Belgium is literally building an island to move more offshore wind power to shore. In late January 2026, marine contractor DEME said it had completed and floated the last of 23 massive concrete \u201ccaissons\u201d for Princess Elisabeth Island, with offshore installation set to continue afterward.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At the end of the day, this is not just an engineering flex. European Investment Bank material says the island is meant to help integrate 3.5 gigawatts of additional offshore wind capacity into Belgium\u2019s grid, while early build phases are tied to at least 2.1 gigawatts from new farms in the Princess Elisabeth Zone. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That could show up as cleaner power on the electric bill, but it also concentrates hardware that has to be protected at sea.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A power island takes shape<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The site sits about 45 kilometers (around 28 miles) off the Belgian coast, and the outer wall is being assembled from hollow concrete caissons that weigh roughly 24,000 tons each. Reports on the build put some caissons at about 58 meters long and 28 meters wide, with heights that vary depending on the storm wall. <\/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-4399 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\/gas-reserves-are-collapsing-in-a-country-built-on-cheap-electricity-and-the-next-energy-battle-is-who-pays-when-imports-begin\/4399\/\">Gas reserves are collapsing in a country built on cheap electricity, and the next energy battle is who pays when imports begin<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">After the final caisson was floated in Vlissingen, DEME said the units were moved to the Scaldia terminal for finishing work before more offshore installation resumes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These pieces do not simply get \u201cdropped\u201d onto the seabed. They have to be aligned into a continuous ring that can absorb waves and protect the equipment inside, and then the interior gets filled with sand and protective layers. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EIB documents describe the caissons as foundations that will be sunk at sea and filled with sand before the high-voltage infrastructure is installed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The grid tech behind the \u201csuperisland\u201d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Princess Elisabeth Island is designed to host both high-voltage alternating current (HVAC) and high-voltage direct current (HVDC) infrastructure. HVAC is the workhorse for connecting offshore wind farms, while HVDC can make more sense as projects move farther offshore and countries want \u201chybrid\u201d links that also trade electricity across borders. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the EIB\u2019s Phase 2 description, that offshore hub includes a 220 kV substation, transformers, and six three-phase 220 kV cables to shore.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But the tech stack is only as fast as the supply chain behind it. Industry reporting in 2025 said decisions on final HVDC contracts were delayed after price increases, even as other parts of the project continued. That is a good reality check for anyone who assumes the energy transition is mostly software and policy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Big money is chasing offshore wind<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The European Investment Bank signed a \u20ac650-million ($753-million) green credit facility to support the first phase of the project, calling the island a key piece of Belgium\u2019s and Europe\u2019s shift away from <a href=\"https:\/\/okdiario.com\/techy\/en\/a-51-year-old-north-sea-oil-field-is-being-dismantled-while-its-crude-nears-150-a-barrel-and-britains-energy-dilemma-gets-harder\/3927\/\">fossil fuels<\/a>. On the EIB\u2019s public project sheet for Princess Elisabeth Island, that first phase is listed with an estimated total cost of about \u20ac1.105 billion ($1.281 billion).<\/p>\n\n\n\n<div class=\"gb-element-879ee667\">\n<div><div class=\"gb-looper-2a9c7016\">\n<div class=\"gb-loop-item gb-loop-item-b02afe83 post-4296 post type-post status-publish format-standard has-post-thumbnail hentry category-tech resize-featured-image\">\n<h4 class=\"gb-text gb-text-8e2b6447\">Also Read: <a href=\"https:\/\/okdiario.com\/techy\/en\/goodbye-to-oil-a-five-kilometer-well-has-brought-geothermal-power-closer-to-the-surface-and-the-old-energy-dream-is-suddenly-real\/4296\/\">Goodbye to oil? A five-kilometer well has brought geothermal power closer to the surface, and the old energy dream is suddenly real<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A second step is already being scoped for the electrical buildout. An EIB summary sheet released in April 2026 lists \u201cPrincess Elisabeth Island Phase 2\u201d as under appraisal at about \u20ac2.296 billion, with potential EIB financing of \u20ac1 billion. It is not a signed deal yet, but it signals how capital-intensive the next chapter could be.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Clean energy is now a defense topic<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When your grid starts living offshore, new questions follow. <a href=\"https:\/\/www.nato.int\/en\/news-and-events\/articles\/news\/2024\/05\/23\/nato-holds-first-meeting-of-critical-undersea-infrastructure-network\" target=\"_blank\" rel=\"noopener\">NATO <\/a>defense ministers decided in early 2024 to set up a \u201cCritical Undersea Infrastructure\u201d network, bringing governments and industry together around the security of cables and other subsea assets. Who watches those assets on a foggy night, or after a suspicious ship lingers in the wrong place?<\/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\/05\/princess-elisabeth-island-offshore-wind-energy-hub-1.jpg\" alt=\"Massive concrete caissons being transported and installed offshore in the Belgian North Sea to form the perimeter of Princess Elisabeth Island.\" class=\"wp-image-4480\" title=\"\" srcset=\"https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/05\/princess-elisabeth-island-offshore-wind-energy-hub-1.jpg 1800w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/05\/princess-elisabeth-island-offshore-wind-energy-hub-1-300x169.jpg 300w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/05\/princess-elisabeth-island-offshore-wind-energy-hub-1-768x432.jpg 768w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/05\/princess-elisabeth-island-offshore-wind-energy-hub-1-1536x864.jpg 1536w, https:\/\/okdiario.com\/techy\/en\/wp-content\/uploads\/2026\/05\/princess-elisabeth-island-offshore-wind-energy-hub-1-150x84.jpg 150w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\" \/><figcaption class=\"wp-element-caption\">As of May 2026, the final phase of caisson installation is underway for Princess Elisabeth Island, the world&#8217;s first artificial energy island designed to link offshore wind farms to the European mainland grid.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Governments are also building regional coordination. In April 2024, six North Sea countries signed a <a href=\"https:\/\/www.regjeringen.no\/contentassets\/03b6ba0be17e4ea0a57517a771ab5d8b\/20240409_press-release_six-north-sea-countries-join-forces-to-secure-critical-infrastructure.pdf\" target=\"_blank\" rel=\"noopener\">joint declaration<\/a> on cooperation and information sharing to protect energy and telecommunications infrastructure. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The European Commission followed in March 2026 with a Joint Communication aimed at strengthening the security and resilience of <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\/\">submarine cables<\/a>, a reminder that the clean-energy buildout depends on what happens under the waterline.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The environmental tradeoffs are real<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A project that pumps around 2.3 million cubic meters of sand and installs massive concrete walls will always have a footprint, even if the goal is cleaner electricity. <\/p>\n\n\n\n<div class=\"gb-element-d8b17365\">\n<div><div class=\"gb-looper-097b63ff\">\n<div class=\"gb-loop-item gb-loop-item-8b79154d post-4482 post type-post status-publish format-standard has-post-thumbnail hentry category-military-defense resize-featured-image\">\n<h4 class=\"gb-text gb-text-e6ad0163\">Also Read: <a href=\"https:\/\/okdiario.com\/techy\/en\/an-sr-71-pilot-recounts-the-mission-when-a-soviet-mig-25-launched-a-missile-at-the-blackbird-and-the-story-reads-like-a-real-time-reminder-of-how-close-cold-war-intercepts-could-get\/4482\/\">An SR-71 pilot recounts the mission when a Soviet MiG-25 launched a missile at the Blackbird, and the story reads like a real-time reminder of how close Cold War \u201cintercepts\u201d could get to becoming an incident<\/a><\/h4>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The EIB says the island includes a \u201cnature-inclusive design\u201d element intended to foster biodiversity and support marine life, and its Phase 2 documentation notes that the project was subject to environmental assessment and permitting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For readers, the main thing to watch is whether this model proves both efficient and resilient. Princess Elisabeth Island is trying to be a climate tool, a business project, and <a href=\"https:\/\/okdiario.com\/techy\/en\/according-to-rheinmetall-europe-would-only-have-enough-fuel-for-three-months-of-war-so-it-is-promoting-a-plan-for-energy-islands-that-use-green-hydrogen-and-synthetic-fuels-while\/1992\/\">strategic infrastructure<\/a> all at once, and there is very little margin for error out at sea.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The official project sheet for Phase 2 was published on <a href=\"https:\/\/www.eib.org\/en\/projects\/all\/20250041\" target=\"_blank\" rel=\"noopener\"><em>European Investment Bank<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Belgium is literally building an island to move more offshore wind power to shore. In late January 2026, marine contractor &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"A country is sinking 23 concrete giants into the sea to build the world\u2019s first artificial energy island for offshore wind\" class=\"read-more button\" href=\"https:\/\/okdiario.com\/techy\/en\/a-country-is-sinking-23-concrete-giants-into-the-sea-to-build-the-worlds-first-artificial-energy-island-for-offshore-wind\/4478\/#more-4478\" aria-label=\"Read more about A country is sinking 23 concrete giants into the sea to build the world\u2019s first artificial energy island for offshore wind\">Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":4479,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-4478","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\/4478","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/comments?post=4478"}],"version-history":[{"count":2,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/posts\/4478\/revisions"}],"predecessor-version":[{"id":4501,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/posts\/4478\/revisions\/4501"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/media\/4479"}],"wp:attachment":[{"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/media?parent=4478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/categories?post=4478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/okdiario.com\/techy\/en\/wp-json\/wp\/v2\/tags?post=4478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}