{"id":10038,"date":"2025-07-09T00:00:00","date_gmt":"2025-07-08T22:00:00","guid":{"rendered":"https:\/\/engie-copro.my\/explore\/explainer\/engie-invests-e1-2-bn-for-pumped-hydro-storage-in-the-uk\/"},"modified":"2026-03-12T10:16:18","modified_gmt":"2026-03-12T09:16:18","slug":"engie-invests-e1-2-bn-for-pumped-hydro-storage-in-the-uk","status":"publish","type":"page","link":"https:\/\/www.engie.com\/en\/explore\/explainer\/engie-invests-e1-2-bn-for-pumped-hydro-storage-in-the-uk\/","title":{"rendered":"ENGIE Invests \u20ac1.2 bn for pumped-hydro storage in the UK"},"content":{"rendered":"\n\n<div id=\"block_71b63bcf5d142998dd7d5c87a31bf382\" class=\"cp-edito-herobanner relative teq-container  noBg z-0 !pt-[115px] lg:!pt-[150px]\">\n    <!--<div class=\"auras-bg  w-screen left-1\/2 -translate-x-1\/2\" data-color=\"soft\"><\/div>-->\n    <div class=\"teq-grid relative z-0\">\n        <div class=\"col-span-12  px-0 lg:col-start-2 lg:col-span-10 hero-top\">\n\n            <div class=\"teq-grid\">\n                <div class=\"col-span-12 desktop-only  \">\n                    <nav role=\"navigation\" aria-label=\"breadcrumb\" class=\"mb-24 cp-breadcrumb desktop-only\">\n            <ol id=\"custom-breadcrumb\" class=\"nj-breadcrumb\"><li class=\"nj-breadcrumb__item\"><span><a href=\"https:\/\/www.engie.com\/en\/\" class=\"nj-link nj-link--sm nj-link--grayed nj-link-icon\">\n        <span aria-hidden=\"true\" class=\"material-icons\">\n            home\n        <\/span>\n        <span class=\"nj-sr-only\">\n            Home\n        <\/span>\n     <\/a><\/li>  <li class=\"nj-breadcrumb__item\" aria-current=\"page\">ENGIE Invests \u20ac1.2 bn for pumped-hydro storage in the UK<\/li><\/span><\/ol>    <\/nav>                <\/div>\n            <\/div>\n\n                            <div class=\"title mt-4\">\n                    <h1 data-trad class=\"nj-heading--2xl nj-weight--bold flex flex-col \">\n                        <p>ENGIE Invests \u20ac1.2 bn for pumped-hydro storage in the UK<\/p>\n                    <\/h1>\n                <\/div>\n            \n            <div class=\"infos flex flex-wrap items-center gap-16 mt-32\">\n\n                                    <div class=\"tags flex flex-wrap gap-8 items-center\">\n                        <div class=\"nj-tag nj-tag--sm bordered nj-tag--purple\">\n    <p class=\"nj-tag__text force-dark\" data-trad>\n        Flexibility    <\/p>\n<\/div>\n    <!--\n    <div class=\"nj-tag\">\n        <p class=\"nj-tag__text\">tag<\/p> <span aria-hidden=\"true\" class=\"nj-tag__icon nj-icon-material material-icons\">check<\/span>\n\n    <\/div>\n    -->\n\n<div class=\"nj-tag nj-tag--sm bordered nj-tag--green\">\n    <p class=\"nj-tag__text force-dark\" data-trad>\n        Hydroelectricity    <\/p>\n<\/div>\n    <!--\n    <div class=\"nj-tag\">\n        <p class=\"nj-tag__text\">tag<\/p> <span aria-hidden=\"true\" class=\"nj-tag__icon nj-icon-material material-icons\">check<\/span>\n\n    <\/div>\n    -->\n\n                    <\/div>\n                \n                                    <div class=\"time flex gap-4 items-center whitespace-nowrap nj-color--signature\">\n                        <span aria-hidden=\"true\" class=\"material-icons nj-icon-material nj-icon-material--blue\">schedule<\/span>\n                        <span data-trad>Published on<\/span> <span class=\"lowercase\" data-trad> 09 Jul. 2025<\/span>\n                    <\/div>\n                \n                            <\/div>\n        <\/div>\n    <\/div>\n    <div class=\"teq-grid  lg:mt-80 relative w-[100vw] left-1\/2 !pb-0 -translate-x-1\/2 toPin px-0 z-10\">\n        <div class=\"img col-span-12 nj-bg--dark mt-8 lg:mt-0 relative\">\n            <div class=\"nj-fluid-progress-bar absolute -top-[6px] left-0 w-[90%] lg:w-[75%]\"><\/div>\n                        <div class=\"flex justify-center items-center w-full nj-bg--ultramarine py-0 lg:py-[164px] lg:h-screen media-c\">\n                <div class=\"w-full h-full lg:h-screen overflow-hidden\">\n                    <div class=\"w-full h-full lg:h-screen overflow-hidden relative\">\n\n                                                    \n                            <picture class=\"block w-full h-full scale-[1.3] media scale-125 \" style=\"margin:  0 auto\">\n                                <source media=\"(max-width: 767px)\"\n                                    srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-hydro.jpg\" \/>\n                                <source media=\"(min-width: 768px)\"\n                                    srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-hydro.jpg\" \/>\n                                <!--TODO AMBRE if zoom ajotuer classe : open-modal-zoom cursor-pointer  -->\n                                <img decoding=\"async\" class=\"w-full h-full object-cover\"\n                                    loading=\"eager\"\n                                    fetchpriority=\"high\"\n                                    src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-hydro.jpg\"\n                                    alt=\"\" \/>\n                            <\/picture>\n\n                        \n                        \n                        \n                        <div class=\"transcription hidden\" data-video=\"\" data-video-webm=\"\">\n                                                    <\/div>\n\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_2a54bcd315cc6813ee2a776af06b0e9d\" class=\"cp-introdution teq-container relative nj-aura nj-aura--white\">\n    <div class=\"teq-grid\">\n        <div class=\"col-span-6 lg:col-start-3 lg:col-span-8 2xl:col-span-6 2xl:col-start-4 relative top text-center\">\n                        <div class=\"nj-heading--sm relative z-10 nj-color--grey-1000\" data-trad data-trad-html>\n                <div class=\"el-wysiwyg data-trad\">\n    <p>ENGIE is continuing a vast renovation program for its two pumped-storage hydropower plants, in north Wales. The renovation of the older plant, Ffestiniog (360 MW, inaugurated in 1963), began in 2017 and will conclude during the winter of 2025\/2026. Preparatory work for Dinorwig (1.8 GW, 1984) has begun, awaiting an investment decision expected in early 2026 for the plant&#8217;s renovation, a project anticipated to last 10 years.<\/p>\n<\/div>\n            <\/div>\n            \n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_2a8009d3e9cf8ce3169271f8e40f5641\" class=\"cp-wysiwyg teq-container nj-aura nj-aura--white\">\n    <div class=\"teq-grid !pt-0\">\n        <div class=\"col-span-6 xl:col-start-2 xl:col-span-10 lg:col-start-1 lg:col-span-12 \">\n                        <div class=\"teq-wysiwyg\">\n                <div data-trad data-trad-html><h2>Pumped-storage hydropower: an essential piece in the energy mix<\/h2>\n<p>This is one of the Group&#8217;s major convictions: to provide decarbonized and affordable energy for all, we need all available technologies (solar, wind, hydro, storage\u2026)<\/p>\n<p>Pumped-storage hydropower (PSH) plants were invented in the 1890s. They are among the oldest flexibility solutions. Capable of storing the equivalent of several hours\u2014or even days\u2014of energy production (more than batteries, which only produce for a few hours), they use electricity surpluses to pump water to an upper reservoir. When needed, the water is turbined to the lower reservoir to restore this energy.<\/p>\n<h2>ENGIE develop flexibility and capitalize on existing assets<\/h2>\n<p>The operability of PSH plants over very long periods (over 100 years) makes them valuable assets. ENGIE\u2019s plants represent three-quarters of the UK&#8217;s pumped-storage capacity (a combined power of 2.1 GW). Their civil engineering structures are in excellent condition, and this is the renovation of their mechanical and electrical equipment that will extend their lifespan by 25 years.<\/p>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_8b6945d8960f545a1bb2aac16cab6446\"\n     class=\"cp-media-full-screen teq-container relative nj-aura nj-aura--white \">\n    <div class=\"teq-grid  \">\n        <div class=\"col-span-12  lg:px-0 relative\">\n                        <div class=\"teq-grid\">\n                <div class=\"col-span-12\">\n                    <div class=\"media-wrapper relative\">\n\n                                                                                                    \n                                                    <picture class=\"flex\">\n                                <source media=\"(max-width: 767px)\"\n                                        srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/Barrage-de-Dinorwig.jpg\"\/>\n                                <source media=\"(min-width: 768px)\"\n                                        srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/Barrage-de-Dinorwig.jpg\"\/>\n\n                                <!--TODO AMBRE if zoom ajotuer classe : open-modal-zoom cursor-pointer  -->\n                                <img decoding=\"async\"\n                                        class=\"w-full object-fit-cover\"\n                                        src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/Barrage-de-Dinorwig.jpg\"\n                                        alt=\"\"\n                                \/>\n                            <\/picture>\n                                            <\/div>\n\n                                        <div class=\"transcription hidden\" data-video=\"\"\n                         data-video-webm=\"\">\n                                            <\/div>\n                    <p class=\"relative nj-text--xs italic mt-8 nj-color--tertiary text-end\"\n                       data-trad>\n                        Dinorwig dam, underground tunnels                    <\/p>\n\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_44afd400bd80a3c739a5c626b75a654e\" class=\"cp-wysiwyg teq-container nj-aura nj-aura--white\">\n    <div class=\"teq-grid !pt-0\">\n        <div class=\"col-span-6 xl:col-start-2 xl:col-span-10 lg:col-start-1 lg:col-span-12 \">\n                        <div class=\"teq-wysiwyg\">\n                <div data-trad data-trad-html><p>To achieve this, ENGIE is investing a total of approximately 1.2 billion euros (the investment plan began in 2017 and will continue over the next 10 years). This significant amount demonstrates the Group&#8217;s commitment to continuing the development of all flexibility technologies and making the best use of the assets it already possesses.<\/p>\n<p>This project is in line with another ambitious project, begun in 2019: a 7.5% increase in the capacity of the Coo pumped-storage power plant (1.1 GW) in Belgium. This work required over 50 million euros of investment and is now successfully nearing completion.<\/p>\n<p>Together, these projects contribute to the Group&#8217;s target of reaching 95 GW of renewable energy production capacity and flexible solutions by 2030<\/p>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_3f3d1efc8d45536d7b42c6cb74688748\"\n     class=\"cp-media-full-screen teq-container relative nj-aura nj-aura--white \">\n    <div class=\"teq-grid  \">\n        <div class=\"col-span-12  lg:px-0 relative\">\n                            <div class=\"teq-grid no-pb grid-12\">\n                    <div class=\"col-span-12 lg:col-span-8 xl:col-span-7 lg:col-start-3 xl:col-start-3  mb-[32px] lg:mb-[64px]\">\n\n                                                    <h2 class=\"nj-heading--lg font-bold\" data-trad>\n                                Get a better feel of how the Ffestiniog dam looks like in video:\n                            <\/h2>\n                        \n                        \n                    <\/div>\n                <\/div>\n                        <div class=\"teq-grid\">\n                <div class=\"col-span-12\">\n                    <div class=\"media-wrapper relative\">\n\n                        <!-- class=\"open-modal cursor-pointer play-btn border-0 w-[64px] h-[64px] lg:w-[75px] lg:h-[75px] flex items-center justify-center rounded-full nj-bg--white absolute top-[50%] left-[50%] -translate-y-[50%] -translate-x-[50%]\" -->\n<button\n  aria-label=\"Launch video\"\n  type=\"button\" \n  class=\"cursor-pointer eva-video play-btn border-0 w-[64px] h-[64px] lg:w-[75px] lg:h-[75px] flex items-center justify-center rounded-full nj-bg--white absolute top-[50%] left-[50%] -translate-y-[50%] -translate-x-[50%]\"\n  data-eva=\"true\"\n  data-eva-video=\"true\"\n  data-video-function\n  modal-type=\"video\"\n  data-video-webm=\"\"\n  data-video=\"AChS8TkO3KQ\"\n  data-transcription=\"\"\n  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srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-hydro.jpg\"\/>\n\n                                <!--TODO AMBRE if zoom ajotuer classe : open-modal-zoom cursor-pointer  -->\n                                <img decoding=\"async\"\n                                        class=\"w-full object-fit-cover\"\n                                        src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-hydro.jpg\"\n                                        alt=\"\"\n                                \/>\n                            <\/picture>\n                                            <\/div>\n\n                    <div class=\"eva-functions\">\n  <div class=\"mt-8 flex gap-8 lg:gap-[25px] lg:w-full lg:items-center justify-between flex-col lg:flex-row w-max\">\n              <\/div>\n<\/div>                    <div class=\"transcription hidden\" data-video=\"AChS8TkO3KQ\"\n                         data-video-webm=\"\">\n                                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   <\/div>\n            <div class=\"col-span-12 mt-24 lg:mt-32\">\n                <div class=\"flex flex-wrap justify-center gap-8\">\n                    <a href=\"#\" \n    data-eva data-preprompted=\"What is the purpose of ENGIE?\" \n    class=\"flex w-full lg:w-fit border border-solid border-moderate px-[16px] py-[12px] nj-text--sm nj-color--primary no-underline eva-link justify-center text-center hover:bg-[rgba(0,40,70,0.1)] transition-colors duration-200\" data-trad>\n    What is the purpose of ENGIE?<\/a>                <\/div>\n            <\/div>\n            <div class=\"col-span-12 flex justify-center place-items-center gap-4 mt-24 lg:mt-48\">\n                    <button data-eva=\"true\" type=\"button\" data-ask=\"true\" aria-haspopup=\"dialog\" class=\"nj-btn eva-btn nj-btn--lg w-full lg:w-auto\">\n    <span aria-hidden=\"true\" class=\"material-icons nj-icon-material nj-icon-material--inverse nj-btn--lg nj-icon-material--eva icon-white\">eva<\/span>\n    <span data-trad>Discover EVA<\/span>\n<\/button>            <\/div>\n        <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>ENGIE is continuing a vast renovation program for its two pumped-storage hydropower plants, in north Wales. The renovation of the older plant, Ffestiniog (360 MW, inaugurated in 1963), began in 2017 and will conclude during the winter of 2025\/2026. Preparatory work for Dinorwig (1.8 GW, 1984) has begun, awaiting an investment decision expected in early 2026 for the plant&#8217;s renovation, a project anticipated to last 10 years.<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":9924,"menu_order":28,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[107,114],"formats":[91],"class_list":["post-10038","page","type-page","status-publish","hentry","tag-flexibility","tag-hydroelectricity"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ENGIE Invests \u20ac1.2 bn in UK Pumped-Hydro Storage - ENGIE<\/title>\n<meta name=\"description\" content=\"ENGIE invests \u20ac1.2 bn in the UK for pumped-storage hydropower, enhancing energy flexibility and capacity while promoting decarbonization.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engie.com\/en\/explore\/explainer\/engie-invests-e1-2-bn-for-pumped-hydro-storage-in-the-uk\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ENGIE Invests \u20ac1.2 bn in UK Pumped-Hydro Storage - 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