{"id":10064,"date":"2022-07-11T00:00:00","date_gmt":"2022-07-10T22:00:00","guid":{"rendered":"https:\/\/engie-copro.my\/explore\/explainer\/4-things-to-know-about-hydroelectricity\/"},"modified":"2026-05-18T17:34:17","modified_gmt":"2026-05-18T15:34:17","slug":"4-things-to-know-about-hydroelectricity","status":"publish","type":"page","link":"https:\/\/www.engie.com\/en\/explore\/explainer\/4-things-to-know-about-hydroelectricity\/","title":{"rendered":"4 things to know about hydroelectricity"},"content":{"rendered":"\n\n<div id=\"block_786c307ddc212465f9a7d4dd0699ddbb\" 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\">4 things to know about hydroelectricity<\/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>4 things to know about hydroelectricity<\/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--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> 11 Jul. 2022<\/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_hydroelec.jpg\" \/>\n                                <source media=\"(min-width: 768px)\"\n                                    srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header_hydroelec.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_hydroelec.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_d96e97c485dc2bbc0b8fb407c1310c2f\" 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>Want to become an expert on renewables? Here are five key things to know about hydroelectricity. Here we go!<\/p>\n<\/div>\n            <\/div>\n            \n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_cfefa2048c139aa80d6dd259e45aa460\" 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>1. Hydroelectricity is not new<\/h2>\n<p>The first dams and hydro power plants first appeared in France in the 19<sup>th<\/sup> century. The fact that they have been around for so long means that the sector is technologically mature. Little is said about it precisely because it is not a novelty. When the French countryside was still being lit with oil lamps, the village of Long (Somme department) took a gamble by harnessing the energy of its river (the Somme) to supply electricity to its inhabitants. In 1901, the municipality started building a power plant, which was inaugurated on June 7, 1903. As a result, Long homes were supplied with electricity, an amazing revolution for people. The village was dubbed \u201cthe city of lights,\u201d and its fame spread all the way to Paris! More than a century later, it would conquer the <a href=\"https:\/\/www.iea.org\/fuels-and-technologies\/hydropower\" target=\"_blank\" rel=\"noopener\">world<\/a>!<\/p>\n<h2>2. Hydroelectricity gets the lion\u2019s share in renewables<\/h2>\n<p>Although it is less discussed than solar or wind power, hydroelectricity is the <a href=\"https:\/\/www.irena.org\/-\/media\/Files\/IRENA\/Agency\/Publication\/2022\/Apr\/IRENA_-RE_Capacity_Highlights_2022.pdf?la=en&amp;hash=6122BF5666A36BECD5AAA2050B011ECE255B3BC7\" target=\"_blank\" rel=\"noopener\">first source of renewable electricity (40%) in the world<\/a> providing electricity to one out of five homes in France. If fossil fuel energies are included in the calculation, it climbs to the 3<sup>rd<\/sup> place, producing 16% of electricity in the world, behind gas (21%) and coal (41%). In fact, the expression <em>\u201cblue gold\u201d<\/em> is even used to describe an energy that currently produces nearly as much energy as all the other renewables put together. The International Energy Agency (IEA) speaks of the <em>\u201cforgotten giant of clean electricity,\u201d which is nonetheless the \u201cbackbone of low-carbon electric production in the world.\u201d <\/em>No less.<\/p>\n<h2>3. It is an energy that works in the mountains, but that\u2019s not all!<\/h2>\n<p>Although historically, hydroelectricity depended largely on topology\u2014since mountainous regions are adapted to building control dams in which to store water and supported by high falls for on-demand production\u2014mountains are not the only solution.<\/p>\n<p>Consequently, run-of-the-river or low head plants can use a river\u2019s continuous flow without retaining any water for continuous electric production.<\/p>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_bc1935f1383c9a806f4c37cd1bcdacc3\" class=\" cp-slider-images teq-container nj-slider-images lg:pr-0 relative nj-aura nj-aura--white\">\n    <div class=\"teq-grid \">\n        <div class=\"col-span-6 lg:col-span-8 lg:col-start-3 top\">\n\n            \n            \n        <\/div>\n        <div class=\" col-span-6 col-start-1 lg:col-span-12 mt-10 \">\n            <div class=\"swiper swiper-image\"\n                 data-nb-slides-big-screen=\"3.44\"\n                 data-nb-slides-desktop=\"3.44\"\n                 data-nb-slides-tablet=\"2.5\"\n                 data-nb-slides-mobile=\"1.2\"\n                 data-space-desktop=\"32\"\n                 data-space-tablet=\"32\"\n                 data-space-mobile=\"32\"\n                 >\n                \n                    <div class=\"swiper-wrapper\">\n\n                        \n                            <div class=\"swiper-slide relative \">\n                                <figure class=\"aspect-[16\/12] relative\">\n                                                                        <picture class=\"width-100\">\n                                        <source media=\"(max-width: 767px)\"\n                                                srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/imgi_3_Image1_2.jpg\"\/>\n                                        <source media=\"(min-width: 768px)\"\n                                                srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/imgi_3_Image1_2.jpg\"\/>\n                                        \n                                                <!--TODO AMBRE if zoom ajotuer classe : open-modal-zoom cursor-pointer  -->\n                                        <img decoding=\"async\"\n                                                class=\"w-full h-full object-cover aspect-[16\/12] open-modal-zoom cursor-pointer\"\n                                                src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/imgi_3_Image1_2.jpg\"\n                                                alt=\"Diagram of a hydroelectric power plant showing water flow and turbine mechanism.\"\/>\n                                    <\/picture>\n\n                                                                            <figcaption class=\"text-right italic nj-color--grey-900 leading-[12px] lg:leading-[28px] text-[12px] lg:text-[14px] opacity-70\" data-trad>\n                                            High head hydroelectric plant                                        <\/figcaption>\n                                    \n                                <\/figure>\n\n                            <\/div>\n\n                        \n                            <div class=\"swiper-slide relative \">\n                                <figure class=\"aspect-[16\/12] relative\">\n                                                                        <picture class=\"width-100\">\n                                        <source media=\"(max-width: 767px)\"\n                                                srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/imgi_4_Image2_0.jpg\"\/>\n                                        <source media=\"(min-width: 768px)\"\n                                                srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/imgi_4_Image2_0.jpg\"\/>\n                                        \n                                                <!--TODO AMBRE if zoom ajotuer classe : open-modal-zoom cursor-pointer  -->\n                                        <img decoding=\"async\"\n                                                class=\"w-full h-full object-cover aspect-[16\/12] open-modal-zoom cursor-pointer\"\n                                                src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/imgi_4_Image2_0.jpg\"\n                                                alt=\"Diagram of a hydroelectric power plant showing water flow and turbine operation.\"\/>\n                                    <\/picture>\n\n                                                                            <figcaption class=\"text-right italic nj-color--grey-900 leading-[12px] lg:leading-[28px] text-[12px] lg:text-[14px] opacity-70\" data-trad>\n                                            Run-of-the-river hydroelectric plant                                        <\/figcaption>\n                                    \n                                <\/figure>\n\n                            <\/div>\n\n                        \n                    <\/div>\n\n                                <div class=\"swiper-navigation-container flex items-center justify-between mt-10 w-full lg:w-[calc(100%-32px)] lg:w-[calc(83.33333334%-64px)] lg:ml-[8.33333333%]\">\n    <div class=\"swiper-pagination flex gap-12  \"><\/div>\n    <div class=\"flex gap-[8px]\">\n        <button type=\"button\" class=\"nj-icon-btn nj-icon-btn--lg absolute -bottom-5 lg:bottom-0 left-0 lg:relative button-prev nj-icon-btn--inverse nj-bg--primary\">\n            <span aria-hidden=\"true\" class=\"material-icons nj-icon-material nj-btn__icon nj-btn__icon--before\">arrow_back<\/span>\n        <\/button>\n        <button type=\"button\" class=\"nj-icon-btn nj-icon-btn--lg absolute -bottom-5 lg:bottom-0 right-0 lg:relative button-next nj-icon-btn--inverse nj-bg--primary nj-bg--primary\">\n            <span aria-hidden=\"true\" class=\"material-icons nj-icon-material nj-btn__icon nj-btn__icon--before\">arrow_forward<\/span>\n        <\/button>\n    <\/div>\n<\/div>\n            <\/div>\n\n        <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_4605780c1e50657bfff46751c2c1c986\" 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><a href=\"https:\/\/www.engie.com\/en\/our-activities\/renewables-and-flex-power\/hydroelectricity\/\">More information on hydroelectricity and its technologies<\/a><\/p>\n<h2>4. Hydroelectricity lights up a whole country<\/h2>\n<p>It\u2019s true, <a href=\"https:\/\/www.irena.org\/hydropower\" target=\"_blank\" rel=\"noopener\">99% of Norway\u2019s electricity comes from hydroelectricity<\/a>!<\/p>\n<p>China has the largest hydropower capacity: for example, the Three Gorges Dam powers between 70 and 80 million Chinese homes with 22,500 MW of installed power. Coming behind China in terms of its hydropower capacity, Brazil produces one of the cleanest energy mixes in the world, with almost 83% from renewable energies, two thirds of which is generated by hydropower.<\/p>\n<p>One last figure? <a href=\"https:\/\/www.irena.org\/-\/media\/Files\/IRENA\/Agency\/Publication\/2021\/Oct\/IRENA_RE_Jobs_2021.pdf\" target=\"_blank\" rel=\"noopener\">The industry employs more than 2.1 million people<\/a> in the world (3<sup>rd<\/sup> employer of renewables behind photovoltaic plants and liquid biofuels).<\/p>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_81cb606f4ab1506bd59b4b25297564a1\" class=\"cp-ai-questions teq-container nj-aura nj-aura--white relative\">\n        <div class=\"teq-grid top\">\n            <div class=\"col-span-12\">\n                <div class=\"flex justify-center mb-16 eva\">\n                    <svg width=\"55\" height=\"24\" viewBox=\"0 0 55 24\" fill=\"none\" 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